First commit - moving from LuaForge to SourceForge

author: scuri <scuri> 2008-10-17 06:10:15 +0000
committer: scuri <scuri> 2008-10-17 06:10:15 +0000
commit: 5a422aba704c375a307a902bafe658342e209906 (patch)
tree: 5005011e086bb863d8fb587ad3319bbec59b2447 /src/libtiff
45 files changed, 28925 insertions, 0 deletions
diff --git a/src/libtiff/t4.h b/src/libtiff/t4.h
new file mode 100644
index 0000000..b8f08fd
--- /dev/null
+++ b/src/libtiff/t4.h
@@ -0,0 +1,285 @@
+/* $Id: t4.h,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _T4_
+#define	_T4_
+/*
+ * CCITT T.4 1D Huffman runlength codes and
+ * related definitions.  Given the small sizes
+ * of these tables it does not seem
+ * worthwhile to make code & length 8 bits.
+ */
+typedef struct tableentry {
+    unsigned short length;	/* bit length of g3 code */
+    unsigned short code;	/* g3 code */
+    short	runlen;		/* run length in bits */
+} tableentry;
+
+#define	EOL	0x001	/* EOL code value - 0000 0000 0000 1 */
+
+/* status values returned instead of a run length */
+#define	G3CODE_EOL	-1	/* NB: ACT_EOL - ACT_WRUNT */
+#define	G3CODE_INVALID	-2	/* NB: ACT_INVALID - ACT_WRUNT */
+#define	G3CODE_EOF	-3	/* end of input data */
+#define	G3CODE_INCOMP	-4	/* incomplete run code */
+
+/*
+ * Note that these tables are ordered such that the
+ * index into the table is known to be either the
+ * run length, or (run length / 64) + a fixed offset.
+ *
+ * NB: The G3CODE_INVALID entries are only used
+ *     during state generation (see mkg3states.c).
+ */
+#ifdef G3CODES
+const tableentry TIFFFaxWhiteCodes[] = {
+    { 8, 0x35, 0 },	/* 0011 0101 */
+    { 6, 0x7, 1 },	/* 0001 11 */
+    { 4, 0x7, 2 },	/* 0111 */
+    { 4, 0x8, 3 },	/* 1000 */
+    { 4, 0xB, 4 },	/* 1011 */
+    { 4, 0xC, 5 },	/* 1100 */
+    { 4, 0xE, 6 },	/* 1110 */
+    { 4, 0xF, 7 },	/* 1111 */
+    { 5, 0x13, 8 },	/* 1001 1 */
+    { 5, 0x14, 9 },	/* 1010 0 */
+    { 5, 0x7, 10 },	/* 0011 1 */
+    { 5, 0x8, 11 },	/* 0100 0 */
+    { 6, 0x8, 12 },	/* 0010 00 */
+    { 6, 0x3, 13 },	/* 0000 11 */
+    { 6, 0x34, 14 },	/* 1101 00 */
+    { 6, 0x35, 15 },	/* 1101 01 */
+    { 6, 0x2A, 16 },	/* 1010 10 */
+    { 6, 0x2B, 17 },	/* 1010 11 */
+    { 7, 0x27, 18 },	/* 0100 111 */
+    { 7, 0xC, 19 },	/* 0001 100 */
+    { 7, 0x8, 20 },	/* 0001 000 */
+    { 7, 0x17, 21 },	/* 0010 111 */
+    { 7, 0x3, 22 },	/* 0000 011 */
+    { 7, 0x4, 23 },	/* 0000 100 */
+    { 7, 0x28, 24 },	/* 0101 000 */
+    { 7, 0x2B, 25 },	/* 0101 011 */
+    { 7, 0x13, 26 },	/* 0010 011 */
+    { 7, 0x24, 27 },	/* 0100 100 */
+    { 7, 0x18, 28 },	/* 0011 000 */
+    { 8, 0x2, 29 },	/* 0000 0010 */
+    { 8, 0x3, 30 },	/* 0000 0011 */
+    { 8, 0x1A, 31 },	/* 0001 1010 */
+    { 8, 0x1B, 32 },	/* 0001 1011 */
+    { 8, 0x12, 33 },	/* 0001 0010 */
+    { 8, 0x13, 34 },	/* 0001 0011 */
+    { 8, 0x14, 35 },	/* 0001 0100 */
+    { 8, 0x15, 36 },	/* 0001 0101 */
+    { 8, 0x16, 37 },	/* 0001 0110 */
+    { 8, 0x17, 38 },	/* 0001 0111 */
+    { 8, 0x28, 39 },	/* 0010 1000 */
+    { 8, 0x29, 40 },	/* 0010 1001 */
+    { 8, 0x2A, 41 },	/* 0010 1010 */
+    { 8, 0x2B, 42 },	/* 0010 1011 */
+    { 8, 0x2C, 43 },	/* 0010 1100 */
+    { 8, 0x2D, 44 },	/* 0010 1101 */
+    { 8, 0x4, 45 },	/* 0000 0100 */
+    { 8, 0x5, 46 },	/* 0000 0101 */
+    { 8, 0xA, 47 },	/* 0000 1010 */
+    { 8, 0xB, 48 },	/* 0000 1011 */
+    { 8, 0x52, 49 },	/* 0101 0010 */
+    { 8, 0x53, 50 },	/* 0101 0011 */
+    { 8, 0x54, 51 },	/* 0101 0100 */
+    { 8, 0x55, 52 },	/* 0101 0101 */
+    { 8, 0x24, 53 },	/* 0010 0100 */
+    { 8, 0x25, 54 },	/* 0010 0101 */
+    { 8, 0x58, 55 },	/* 0101 1000 */
+    { 8, 0x59, 56 },	/* 0101 1001 */
+    { 8, 0x5A, 57 },	/* 0101 1010 */
+    { 8, 0x5B, 58 },	/* 0101 1011 */
+    { 8, 0x4A, 59 },	/* 0100 1010 */
+    { 8, 0x4B, 60 },	/* 0100 1011 */
+    { 8, 0x32, 61 },	/* 0011 0010 */
+    { 8, 0x33, 62 },	/* 0011 0011 */
+    { 8, 0x34, 63 },	/* 0011 0100 */
+    { 5, 0x1B, 64 },	/* 1101 1 */
+    { 5, 0x12, 128 },	/* 1001 0 */
+    { 6, 0x17, 192 },	/* 0101 11 */
+    { 7, 0x37, 256 },	/* 0110 111 */
+    { 8, 0x36, 320 },	/* 0011 0110 */
+    { 8, 0x37, 384 },	/* 0011 0111 */
+    { 8, 0x64, 448 },	/* 0110 0100 */
+    { 8, 0x65, 512 },	/* 0110 0101 */
+    { 8, 0x68, 576 },	/* 0110 1000 */
+    { 8, 0x67, 640 },	/* 0110 0111 */
+    { 9, 0xCC, 704 },	/* 0110 0110 0 */
+    { 9, 0xCD, 768 },	/* 0110 0110 1 */
+    { 9, 0xD2, 832 },	/* 0110 1001 0 */
+    { 9, 0xD3, 896 },	/* 0110 1001 1 */
+    { 9, 0xD4, 960 },	/* 0110 1010 0 */
+    { 9, 0xD5, 1024 },	/* 0110 1010 1 */
+    { 9, 0xD6, 1088 },	/* 0110 1011 0 */
+    { 9, 0xD7, 1152 },	/* 0110 1011 1 */
+    { 9, 0xD8, 1216 },	/* 0110 1100 0 */
+    { 9, 0xD9, 1280 },	/* 0110 1100 1 */
+    { 9, 0xDA, 1344 },	/* 0110 1101 0 */
+    { 9, 0xDB, 1408 },	/* 0110 1101 1 */
+    { 9, 0x98, 1472 },	/* 0100 1100 0 */
+    { 9, 0x99, 1536 },	/* 0100 1100 1 */
+    { 9, 0x9A, 1600 },	/* 0100 1101 0 */
+    { 6, 0x18, 1664 },	/* 0110 00 */
+    { 9, 0x9B, 1728 },	/* 0100 1101 1 */
+    { 11, 0x8, 1792 },	/* 0000 0001 000 */
+    { 11, 0xC, 1856 },	/* 0000 0001 100 */
+    { 11, 0xD, 1920 },	/* 0000 0001 101 */
+    { 12, 0x12, 1984 },	/* 0000 0001 0010 */
+    { 12, 0x13, 2048 },	/* 0000 0001 0011 */
+    { 12, 0x14, 2112 },	/* 0000 0001 0100 */
+    { 12, 0x15, 2176 },	/* 0000 0001 0101 */
+    { 12, 0x16, 2240 },	/* 0000 0001 0110 */
+    { 12, 0x17, 2304 },	/* 0000 0001 0111 */
+    { 12, 0x1C, 2368 },	/* 0000 0001 1100 */
+    { 12, 0x1D, 2432 },	/* 0000 0001 1101 */
+    { 12, 0x1E, 2496 },	/* 0000 0001 1110 */
+    { 12, 0x1F, 2560 },	/* 0000 0001 1111 */
+    { 12, 0x1, G3CODE_EOL },	/* 0000 0000 0001 */
+    { 9, 0x1, G3CODE_INVALID },	/* 0000 0000 1 */
+    { 10, 0x1, G3CODE_INVALID },	/* 0000 0000 01 */
+    { 11, 0x1, G3CODE_INVALID },	/* 0000 0000 001 */
+    { 12, 0x0, G3CODE_INVALID },	/* 0000 0000 0000 */
+};
+
+const tableentry TIFFFaxBlackCodes[] = {
+    { 10, 0x37, 0 },	/* 0000 1101 11 */
+    { 3, 0x2, 1 },	/* 010 */
+    { 2, 0x3, 2 },	/* 11 */
+    { 2, 0x2, 3 },	/* 10 */
+    { 3, 0x3, 4 },	/* 011 */
+    { 4, 0x3, 5 },	/* 0011 */
+    { 4, 0x2, 6 },	/* 0010 */
+    { 5, 0x3, 7 },	/* 0001 1 */
+    { 6, 0x5, 8 },	/* 0001 01 */
+    { 6, 0x4, 9 },	/* 0001 00 */
+    { 7, 0x4, 10 },	/* 0000 100 */
+    { 7, 0x5, 11 },	/* 0000 101 */
+    { 7, 0x7, 12 },	/* 0000 111 */
+    { 8, 0x4, 13 },	/* 0000 0100 */
+    { 8, 0x7, 14 },	/* 0000 0111 */
+    { 9, 0x18, 15 },	/* 0000 1100 0 */
+    { 10, 0x17, 16 },	/* 0000 0101 11 */
+    { 10, 0x18, 17 },	/* 0000 0110 00 */
+    { 10, 0x8, 18 },	/* 0000 0010 00 */
+    { 11, 0x67, 19 },	/* 0000 1100 111 */
+    { 11, 0x68, 20 },	/* 0000 1101 000 */
+    { 11, 0x6C, 21 },	/* 0000 1101 100 */
+    { 11, 0x37, 22 },	/* 0000 0110 111 */
+    { 11, 0x28, 23 },	/* 0000 0101 000 */
+    { 11, 0x17, 24 },	/* 0000 0010 111 */
+    { 11, 0x18, 25 },	/* 0000 0011 000 */
+    { 12, 0xCA, 26 },	/* 0000 1100 1010 */
+    { 12, 0xCB, 27 },	/* 0000 1100 1011 */
+    { 12, 0xCC, 28 },	/* 0000 1100 1100 */
+    { 12, 0xCD, 29 },	/* 0000 1100 1101 */
+    { 12, 0x68, 30 },	/* 0000 0110 1000 */
+    { 12, 0x69, 31 },	/* 0000 0110 1001 */
+    { 12, 0x6A, 32 },	/* 0000 0110 1010 */
+    { 12, 0x6B, 33 },	/* 0000 0110 1011 */
+    { 12, 0xD2, 34 },	/* 0000 1101 0010 */
+    { 12, 0xD3, 35 },	/* 0000 1101 0011 */
+    { 12, 0xD4, 36 },	/* 0000 1101 0100 */
+    { 12, 0xD5, 37 },	/* 0000 1101 0101 */
+    { 12, 0xD6, 38 },	/* 0000 1101 0110 */
+    { 12, 0xD7, 39 },	/* 0000 1101 0111 */
+    { 12, 0x6C, 40 },	/* 0000 0110 1100 */
+    { 12, 0x6D, 41 },	/* 0000 0110 1101 */
+    { 12, 0xDA, 42 },	/* 0000 1101 1010 */
+    { 12, 0xDB, 43 },	/* 0000 1101 1011 */
+    { 12, 0x54, 44 },	/* 0000 0101 0100 */
+    { 12, 0x55, 45 },	/* 0000 0101 0101 */
+    { 12, 0x56, 46 },	/* 0000 0101 0110 */
+    { 12, 0x57, 47 },	/* 0000 0101 0111 */
+    { 12, 0x64, 48 },	/* 0000 0110 0100 */
+    { 12, 0x65, 49 },	/* 0000 0110 0101 */
+    { 12, 0x52, 50 },	/* 0000 0101 0010 */
+    { 12, 0x53, 51 },	/* 0000 0101 0011 */
+    { 12, 0x24, 52 },	/* 0000 0010 0100 */
+    { 12, 0x37, 53 },	/* 0000 0011 0111 */
+    { 12, 0x38, 54 },	/* 0000 0011 1000 */
+    { 12, 0x27, 55 },	/* 0000 0010 0111 */
+    { 12, 0x28, 56 },	/* 0000 0010 1000 */
+    { 12, 0x58, 57 },	/* 0000 0101 1000 */
+    { 12, 0x59, 58 },	/* 0000 0101 1001 */
+    { 12, 0x2B, 59 },	/* 0000 0010 1011 */
+    { 12, 0x2C, 60 },	/* 0000 0010 1100 */
+    { 12, 0x5A, 61 },	/* 0000 0101 1010 */
+    { 12, 0x66, 62 },	/* 0000 0110 0110 */
+    { 12, 0x67, 63 },	/* 0000 0110 0111 */
+    { 10, 0xF, 64 },	/* 0000 0011 11 */
+    { 12, 0xC8, 128 },	/* 0000 1100 1000 */
+    { 12, 0xC9, 192 },	/* 0000 1100 1001 */
+    { 12, 0x5B, 256 },	/* 0000 0101 1011 */
+    { 12, 0x33, 320 },	/* 0000 0011 0011 */
+    { 12, 0x34, 384 },	/* 0000 0011 0100 */
+    { 12, 0x35, 448 },	/* 0000 0011 0101 */
+    { 13, 0x6C, 512 },	/* 0000 0011 0110 0 */
+    { 13, 0x6D, 576 },	/* 0000 0011 0110 1 */
+    { 13, 0x4A, 640 },	/* 0000 0010 0101 0 */
+    { 13, 0x4B, 704 },	/* 0000 0010 0101 1 */
+    { 13, 0x4C, 768 },	/* 0000 0010 0110 0 */
+    { 13, 0x4D, 832 },	/* 0000 0010 0110 1 */
+    { 13, 0x72, 896 },	/* 0000 0011 1001 0 */
+    { 13, 0x73, 960 },	/* 0000 0011 1001 1 */
+    { 13, 0x74, 1024 },	/* 0000 0011 1010 0 */
+    { 13, 0x75, 1088 },	/* 0000 0011 1010 1 */
+    { 13, 0x76, 1152 },	/* 0000 0011 1011 0 */
+    { 13, 0x77, 1216 },	/* 0000 0011 1011 1 */
+    { 13, 0x52, 1280 },	/* 0000 0010 1001 0 */
+    { 13, 0x53, 1344 },	/* 0000 0010 1001 1 */
+    { 13, 0x54, 1408 },	/* 0000 0010 1010 0 */
+    { 13, 0x55, 1472 },	/* 0000 0010 1010 1 */
+    { 13, 0x5A, 1536 },	/* 0000 0010 1101 0 */
+    { 13, 0x5B, 1600 },	/* 0000 0010 1101 1 */
+    { 13, 0x64, 1664 },	/* 0000 0011 0010 0 */
+    { 13, 0x65, 1728 },	/* 0000 0011 0010 1 */
+    { 11, 0x8, 1792 },	/* 0000 0001 000 */
+    { 11, 0xC, 1856 },	/* 0000 0001 100 */
+    { 11, 0xD, 1920 },	/* 0000 0001 101 */
+    { 12, 0x12, 1984 },	/* 0000 0001 0010 */
+    { 12, 0x13, 2048 },	/* 0000 0001 0011 */
+    { 12, 0x14, 2112 },	/* 0000 0001 0100 */
+    { 12, 0x15, 2176 },	/* 0000 0001 0101 */
+    { 12, 0x16, 2240 },	/* 0000 0001 0110 */
+    { 12, 0x17, 2304 },	/* 0000 0001 0111 */
+    { 12, 0x1C, 2368 },	/* 0000 0001 1100 */
+    { 12, 0x1D, 2432 },	/* 0000 0001 1101 */
+    { 12, 0x1E, 2496 },	/* 0000 0001 1110 */
+    { 12, 0x1F, 2560 },	/* 0000 0001 1111 */
+    { 12, 0x1, G3CODE_EOL },	/* 0000 0000 0001 */
+    { 9, 0x1, G3CODE_INVALID },	/* 0000 0000 1 */
+    { 10, 0x1, G3CODE_INVALID },	/* 0000 0000 01 */
+    { 11, 0x1, G3CODE_INVALID },	/* 0000 0000 001 */
+    { 12, 0x0, G3CODE_INVALID },	/* 0000 0000 0000 */
+};
+#else
+extern	const tableentry TIFFFaxWhiteCodes[];
+extern	const tableentry TIFFFaxBlackCodes[];
+#endif
+#endif /* _T4_ */
diff --git a/src/libtiff/tif_aux.c b/src/libtiff/tif_aux.c
new file mode 100644
index 0000000..d33a144
--- /dev/null
+++ b/src/libtiff/tif_aux.c
@@ -0,0 +1,267 @@
+/* $Id: tif_aux.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Auxiliary Support Routines.
+ */
+#include "tiffiop.h"
+#include "tif_predict.h"
+#include <math.h>
+
+tdata_t
+_TIFFCheckMalloc(TIFF* tif, size_t nmemb, size_t elem_size, const char* what)
+{
+	tdata_t cp = NULL;
+	tsize_t	bytes = nmemb * elem_size;
+
+	/*
+	 * XXX: Check for integer overflow.
+	 */
+	if (nmemb && elem_size && bytes / elem_size == nmemb)
+		cp = _TIFFmalloc(bytes);
+
+	if (cp == NULL)
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space %s", what);
+
+	return (cp);
+}
+
+static int
+TIFFDefaultTransferFunction(TIFFDirectory* td)
+{
+	uint16 **tf = td->td_transferfunction;
+	tsize_t i, n, nbytes;
+
+	tf[0] = tf[1] = tf[2] = 0;
+	if (td->td_bitspersample >= sizeof(tsize_t) * 8 - 2)
+		return 0;
+
+	n = 1<<td->td_bitspersample;
+	nbytes = n * sizeof (uint16);
+	if (!(tf[0] = (uint16 *)_TIFFmalloc(nbytes)))
+		return 0;
+	tf[0][0] = 0;
+	for (i = 1; i < n; i++) {
+		double t = (double)i/((double) n-1.);
+		tf[0][i] = (uint16)floor(65535.*pow(t, 2.2) + .5);
+	}
+
+	if (td->td_samplesperpixel - td->td_extrasamples > 1) {
+		if (!(tf[1] = (uint16 *)_TIFFmalloc(nbytes)))
+			goto bad;
+		_TIFFmemcpy(tf[1], tf[0], nbytes);
+		if (!(tf[2] = (uint16 *)_TIFFmalloc(nbytes)))
+			goto bad;
+		_TIFFmemcpy(tf[2], tf[0], nbytes);
+	}
+	return 1;
+
+bad:
+	if (tf[0])
+		_TIFFfree(tf[0]);
+	if (tf[1])
+		_TIFFfree(tf[1]);
+	if (tf[2])
+		_TIFFfree(tf[2]);
+	tf[0] = tf[1] = tf[2] = 0;
+	return 0;
+}
+
+/*
+ * Like TIFFGetField, but return any default
+ * value if the tag is not present in the directory.
+ *
+ * NB:	We use the value in the directory, rather than
+ *	explcit values so that defaults exist only one
+ *	place in the library -- in TIFFDefaultDirectory.
+ */
+int
+TIFFVGetFieldDefaulted(TIFF* tif, ttag_t tag, va_list ap)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if (TIFFVGetField(tif, tag, ap))
+		return (1);
+	switch (tag) {
+	case TIFFTAG_SUBFILETYPE:
+		*va_arg(ap, uint32 *) = td->td_subfiletype;
+		return (1);
+	case TIFFTAG_BITSPERSAMPLE:
+		*va_arg(ap, uint16 *) = td->td_bitspersample;
+		return (1);
+	case TIFFTAG_THRESHHOLDING:
+		*va_arg(ap, uint16 *) = td->td_threshholding;
+		return (1);
+	case TIFFTAG_FILLORDER:
+		*va_arg(ap, uint16 *) = td->td_fillorder;
+		return (1);
+	case TIFFTAG_ORIENTATION:
+		*va_arg(ap, uint16 *) = td->td_orientation;
+		return (1);
+	case TIFFTAG_SAMPLESPERPIXEL:
+		*va_arg(ap, uint16 *) = td->td_samplesperpixel;
+		return (1);
+	case TIFFTAG_ROWSPERSTRIP:
+		*va_arg(ap, uint32 *) = td->td_rowsperstrip;
+		return (1);
+	case TIFFTAG_MINSAMPLEVALUE:
+		*va_arg(ap, uint16 *) = td->td_minsamplevalue;
+		return (1);
+	case TIFFTAG_MAXSAMPLEVALUE:
+		*va_arg(ap, uint16 *) = td->td_maxsamplevalue;
+		return (1);
+	case TIFFTAG_PLANARCONFIG:
+		*va_arg(ap, uint16 *) = td->td_planarconfig;
+		return (1);
+	case TIFFTAG_RESOLUTIONUNIT:
+		*va_arg(ap, uint16 *) = td->td_resolutionunit;
+		return (1);
+	case TIFFTAG_PREDICTOR:
+                {
+			TIFFPredictorState* sp = (TIFFPredictorState*) tif->tif_data;
+			*va_arg(ap, uint16*) = (uint16) sp->predictor;
+			return 1;
+                }
+	case TIFFTAG_DOTRANGE:
+		*va_arg(ap, uint16 *) = 0;
+		*va_arg(ap, uint16 *) = (1<<td->td_bitspersample)-1;
+		return (1);
+	case TIFFTAG_INKSET:
+		*va_arg(ap, uint16 *) = INKSET_CMYK;
+		return 1;
+	case TIFFTAG_NUMBEROFINKS:
+		*va_arg(ap, uint16 *) = 4;
+		return (1);
+	case TIFFTAG_EXTRASAMPLES:
+		*va_arg(ap, uint16 *) = td->td_extrasamples;
+		*va_arg(ap, uint16 **) = td->td_sampleinfo;
+		return (1);
+	case TIFFTAG_MATTEING:
+		*va_arg(ap, uint16 *) =
+		    (td->td_extrasamples == 1 &&
+		     td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
+		return (1);
+	case TIFFTAG_TILEDEPTH:
+		*va_arg(ap, uint32 *) = td->td_tiledepth;
+		return (1);
+	case TIFFTAG_DATATYPE:
+		*va_arg(ap, uint16 *) = td->td_sampleformat-1;
+		return (1);
+	case TIFFTAG_SAMPLEFORMAT:
+		*va_arg(ap, uint16 *) = td->td_sampleformat;
+                return(1);
+	case TIFFTAG_IMAGEDEPTH:
+		*va_arg(ap, uint32 *) = td->td_imagedepth;
+		return (1);
+	case TIFFTAG_YCBCRCOEFFICIENTS:
+		{
+			/* defaults are from CCIR Recommendation 601-1 */
+			static float ycbcrcoeffs[] = { 0.299f, 0.587f, 0.114f };
+			*va_arg(ap, float **) = ycbcrcoeffs;
+			return 1;
+		}
+	case TIFFTAG_YCBCRSUBSAMPLING:
+		*va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[0];
+		*va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[1];
+		return (1);
+	case TIFFTAG_YCBCRPOSITIONING:
+		*va_arg(ap, uint16 *) = td->td_ycbcrpositioning;
+		return (1);
+	case TIFFTAG_WHITEPOINT:
+		{
+			static float whitepoint[2];
+
+			/* TIFF 6.0 specification tells that it is no default
+			   value for the WhitePoint, but AdobePhotoshop TIFF
+			   Technical Note tells that it should be CIE D50. */
+			whitepoint[0] =	D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
+			whitepoint[1] =	D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
+			*va_arg(ap, float **) = whitepoint;
+			return 1;
+		}
+	case TIFFTAG_TRANSFERFUNCTION:
+		if (!td->td_transferfunction[0] &&
+		    !TIFFDefaultTransferFunction(td)) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space for \"TransferFunction\" tag");
+			return (0);
+		}
+		*va_arg(ap, uint16 **) = td->td_transferfunction[0];
+		if (td->td_samplesperpixel - td->td_extrasamples > 1) {
+			*va_arg(ap, uint16 **) = td->td_transferfunction[1];
+			*va_arg(ap, uint16 **) = td->td_transferfunction[2];
+		}
+		return (1);
+	case TIFFTAG_REFERENCEBLACKWHITE:
+		{
+			int i;
+			static float ycbcr_refblackwhite[] = 
+			{ 0.0F, 255.0F, 128.0F, 255.0F, 128.0F, 255.0F };
+			static float rgb_refblackwhite[6];
+
+			for (i = 0; i < 3; i++) {
+				rgb_refblackwhite[2 * i + 0] = 0.0F;
+				rgb_refblackwhite[2 * i + 1] =
+					(float)((1L<<td->td_bitspersample)-1L);
+			}
+			
+			if (td->td_photometric == PHOTOMETRIC_YCBCR) {
+				/*
+				 * YCbCr (Class Y) images must have the
+				 * ReferenceBlackWhite tag set. Fix the
+				 * broken images, which lacks that tag.
+				 */
+				*va_arg(ap, float **) = ycbcr_refblackwhite;
+			} else {
+				/*
+				 * Assume RGB (Class R)
+				 */
+				*va_arg(ap, float **) = rgb_refblackwhite;
+			}
+			return 1;
+		}
+	}
+	return 0;
+}
+
+/*
+ * Like TIFFGetField, but return any default
+ * value if the tag is not present in the directory.
+ */
+int
+TIFFGetFieldDefaulted(TIFF* tif, ttag_t tag, ...)
+{
+	int ok;
+	va_list ap;
+
+	va_start(ap, tag);
+	ok =  TIFFVGetFieldDefaulted(tif, tag, ap);
+	va_end(ap);
+	return (ok);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_close.c b/src/libtiff/tif_close.c
new file mode 100644
index 0000000..5047d37
--- /dev/null
+++ b/src/libtiff/tif_close.c
@@ -0,0 +1,119 @@
+/* $Id: tif_close.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#include "tiffiop.h"
+
+/************************************************************************/
+/*                            TIFFCleanup()                             */
+/************************************************************************/
+
+/**
+ * Auxiliary function to free the TIFF structure. Given structure will be
+ * completetly freed, so you should save opened file handle and pointer
+ * to the close procedure in external variables before calling
+ * _TIFFCleanup(), if you will need these ones to close the file.
+ * 
+ * @param tif A TIFF pointer.
+ */
+
+void
+TIFFCleanup(TIFF* tif)
+{
+	if (tif->tif_mode != O_RDONLY)
+	    /*
+	     * Flush buffered data and directory (if dirty).
+	     */
+	    TIFFFlush(tif);
+	(*tif->tif_cleanup)(tif);
+	TIFFFreeDirectory(tif);
+
+	if (tif->tif_dirlist)
+	    _TIFFfree(tif->tif_dirlist);
+	    
+	/* Clean up client info links */
+	while( tif->tif_clientinfo )
+	{
+	    TIFFClientInfoLink *link = tif->tif_clientinfo;
+
+	    tif->tif_clientinfo = link->next;
+	    _TIFFfree( link->name );
+	    _TIFFfree( link );
+	}
+
+	if (tif->tif_rawdata && (tif->tif_flags&TIFF_MYBUFFER))
+	    _TIFFfree(tif->tif_rawdata);
+	if (isMapped(tif))
+	    TIFFUnmapFileContents(tif, tif->tif_base, tif->tif_size);
+
+	/* Clean up custom fields */
+	if (tif->tif_nfields > 0) 
+	{
+	    size_t  i;
+
+	    for (i = 0; i < tif->tif_nfields; i++) 
+	    {
+		TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
+		if (fld->field_bit == FIELD_CUSTOM && 
+		    strncmp("Tag ", fld->field_name, 4) == 0) 
+		{
+		    _TIFFfree(fld->field_name);
+		    _TIFFfree(fld);
+		}
+	    }   
+	  
+	    _TIFFfree(tif->tif_fieldinfo);
+	}
+
+	_TIFFfree(tif);
+}
+
+/************************************************************************/
+/*                            TIFFClose()                               */
+/************************************************************************/
+
+/**
+ * Close a previously opened TIFF file.
+ *
+ * TIFFClose closes a file that was previously opened with TIFFOpen().
+ * Any buffered data are flushed to the file, including the contents of
+ * the current directory (if modified); and all resources are reclaimed.
+ * 
+ * @param tif A TIFF pointer.
+ */
+
+void
+TIFFClose(TIFF* tif)
+{
+	TIFFCloseProc closeproc = tif->tif_closeproc;
+	thandle_t fd = tif->tif_clientdata;
+
+	TIFFCleanup(tif);
+	(void) (*closeproc)(fd);
+}
+
diff --git a/src/libtiff/tif_codec.c b/src/libtiff/tif_codec.c
new file mode 100644
index 0000000..377e083
--- /dev/null
+++ b/src/libtiff/tif_codec.c
@@ -0,0 +1,150 @@
+/* $Id: tif_codec.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library
+ *
+ * Builtin Compression Scheme Configuration Support.
+ */
+#include "tiffiop.h"
+
+static	int NotConfigured(TIFF*, int);
+
+#ifndef	LZW_SUPPORT
+#define	TIFFInitLZW		NotConfigured
+#endif
+#ifndef	PACKBITS_SUPPORT
+#define	TIFFInitPackBits	NotConfigured
+#endif
+#ifndef	THUNDER_SUPPORT
+#define	TIFFInitThunderScan	NotConfigured
+#endif
+#ifndef	NEXT_SUPPORT
+#define	TIFFInitNeXT		NotConfigured
+#endif
+#ifndef	JPEG_SUPPORT
+#define	TIFFInitJPEG		NotConfigured
+#endif
+#ifndef	OJPEG_SUPPORT
+#define	TIFFInitOJPEG		NotConfigured
+#endif
+#ifndef	CCITT_SUPPORT
+#define	TIFFInitCCITTRLE	NotConfigured
+#define	TIFFInitCCITTRLEW	NotConfigured
+#define	TIFFInitCCITTFax3	NotConfigured
+#define	TIFFInitCCITTFax4	NotConfigured
+#endif
+#ifndef JBIG_SUPPORT
+#define	TIFFInitJBIG		NotConfigured
+#endif
+#ifndef	ZIP_SUPPORT
+#define	TIFFInitZIP		NotConfigured
+#endif
+#ifndef	PIXARLOG_SUPPORT
+#define	TIFFInitPixarLog	NotConfigured
+#endif
+#ifndef LOGLUV_SUPPORT
+#define TIFFInitSGILog		NotConfigured
+#endif
+
+/*
+ * Compression schemes statically built into the library.
+ */
+#ifdef VMS
+const TIFFCodec _TIFFBuiltinCODECS[] = {
+#else
+TIFFCodec _TIFFBuiltinCODECS[] = {
+#endif
+    { "None",		COMPRESSION_NONE,	TIFFInitDumpMode },
+    { "LZW",		COMPRESSION_LZW,	TIFFInitLZW },
+    { "PackBits",	COMPRESSION_PACKBITS,	TIFFInitPackBits },
+    { "ThunderScan",	COMPRESSION_THUNDERSCAN,TIFFInitThunderScan },
+    { "NeXT",		COMPRESSION_NEXT,	TIFFInitNeXT },
+    { "JPEG",		COMPRESSION_JPEG,	TIFFInitJPEG },
+    { "Old-style JPEG",	COMPRESSION_OJPEG,	TIFFInitOJPEG },
+    { "CCITT RLE",	COMPRESSION_CCITTRLE,	TIFFInitCCITTRLE },
+    { "CCITT RLE/W",	COMPRESSION_CCITTRLEW,	TIFFInitCCITTRLEW },
+    { "CCITT Group 3",	COMPRESSION_CCITTFAX3,	TIFFInitCCITTFax3 },
+    { "CCITT Group 4",	COMPRESSION_CCITTFAX4,	TIFFInitCCITTFax4 },
+    { "ISO JBIG",	COMPRESSION_JBIG,	TIFFInitJBIG },
+    { "Deflate",	COMPRESSION_DEFLATE,	TIFFInitZIP },
+    { "AdobeDeflate",   COMPRESSION_ADOBE_DEFLATE , TIFFInitZIP }, 
+    { "PixarLog",	COMPRESSION_PIXARLOG,	TIFFInitPixarLog },
+    { "SGILog",		COMPRESSION_SGILOG,	TIFFInitSGILog },
+    { "SGILog24",	COMPRESSION_SGILOG24,	TIFFInitSGILog },
+    { NULL,             0,                      NULL }
+};
+
+static int
+_notConfigured(TIFF* tif)
+{
+	const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
+
+	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    "%s compression support is not configured", c->name);
+	return (0);
+}
+
+static int
+NotConfigured(TIFF* tif, int scheme)
+{
+    (void) scheme;
+    
+    tif->tif_decodestatus = FALSE;
+    tif->tif_setupdecode = _notConfigured;
+    tif->tif_encodestatus = FALSE;
+    tif->tif_setupencode = _notConfigured;
+    return (1);
+}
+
+/************************************************************************/
+/*                       TIFFIsCODECConfigured()                        */
+/************************************************************************/
+
+/**
+ * Check whether we have working codec for the specific coding scheme.
+ * 
+ * @return returns 1 if the codec is configured and working. Otherwise
+ * 0 will be returned.
+ */
+
+int
+TIFFIsCODECConfigured(uint16 scheme)
+{
+	const TIFFCodec* codec = TIFFFindCODEC(scheme);
+
+	if(codec == NULL) {
+            return 0;
+        }
+        if(codec->init == NULL) {
+            return 0;
+        }
+	if(codec->init != NotConfigured){
+            return 1;
+        }
+	return 0;
+}
+
diff --git a/src/libtiff/tif_color.c b/src/libtiff/tif_color.c
new file mode 100644
index 0000000..9e9481e
--- /dev/null
+++ b/src/libtiff/tif_color.c
@@ -0,0 +1,275 @@
+/* $Id: tif_color.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * CIE L*a*b* to CIE XYZ and CIE XYZ to RGB conversion routines are taken
+ * from the VIPS library (http://www.vips.ecs.soton.ac.uk) with
+ * the permission of John Cupitt, the VIPS author.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Color space conversion routines.
+ */
+
+#include "tiffiop.h"
+#include <math.h>
+
+/*
+ * Convert color value from the CIE L*a*b* 1976 space to CIE XYZ.
+ */
+void
+TIFFCIELabToXYZ(TIFFCIELabToRGB *cielab, uint32 l, int32 a, int32 b,
+		float *X, float *Y, float *Z)
+{
+	float L = (float)l * 100.0F / 255.0F;
+	float cby, tmp;
+
+	if( L < 8.856F ) {
+		*Y = (L * cielab->Y0) / 903.292F;
+		cby = 7.787F * (*Y / cielab->Y0) + 16.0F / 116.0F;
+	} else {
+		cby = (L + 16.0F) / 116.0F;
+		*Y = cielab->Y0 * cby * cby * cby;
+	}
+
+	tmp = (float)a / 500.0F + cby;
+	if( tmp < 0.2069F )
+		*X = cielab->X0 * (tmp - 0.13793F) / 7.787F;
+	else    
+		*X = cielab->X0 * tmp * tmp * tmp;
+
+	tmp = cby - (float)b / 200.0F;
+	if( tmp < 0.2069F )
+		*Z = cielab->Z0 * (tmp - 0.13793F) / 7.787F;
+	else    
+		*Z = cielab->Z0 * tmp * tmp * tmp;
+}
+
+#define RINT(R) ((uint32)((R)>0?((R)+0.5):((R)-0.5)))
+/*
+ * Convert color value from the XYZ space to RGB.
+ */
+void
+TIFFXYZToRGB(TIFFCIELabToRGB *cielab, float X, float Y, float Z,
+	     uint32 *r, uint32 *g, uint32 *b)
+{
+	int i;
+	float Yr, Yg, Yb;
+	float *matrix = &cielab->display.d_mat[0][0];
+
+	/* Multiply through the matrix to get luminosity values. */
+	Yr =  matrix[0] * X + matrix[1] * Y + matrix[2] * Z;
+	Yg =  matrix[3] * X + matrix[4] * Y + matrix[5] * Z;
+	Yb =  matrix[6] * X + matrix[7] * Y + matrix[8] * Z;
+
+	/* Clip input */
+	Yr = TIFFmax(Yr, cielab->display.d_Y0R);
+	Yg = TIFFmax(Yg, cielab->display.d_Y0G);
+	Yb = TIFFmax(Yb, cielab->display.d_Y0B);
+
+	/* Avoid overflow in case of wrong input values */
+	Yr = TIFFmin(Yr, cielab->display.d_YCR);
+	Yg = TIFFmin(Yg, cielab->display.d_YCG);
+	Yb = TIFFmin(Yb, cielab->display.d_YCB);
+
+	/* Turn luminosity to colour value. */
+	i = (int)((Yr - cielab->display.d_Y0R) / cielab->rstep);
+	i = TIFFmin(cielab->range, i);
+	*r = RINT(cielab->Yr2r[i]);
+
+	i = (int)((Yg - cielab->display.d_Y0G) / cielab->gstep);
+	i = TIFFmin(cielab->range, i);
+	*g = RINT(cielab->Yg2g[i]);
+
+	i = (int)((Yb - cielab->display.d_Y0B) / cielab->bstep);
+	i = TIFFmin(cielab->range, i);
+	*b = RINT(cielab->Yb2b[i]);
+
+	/* Clip output. */
+	*r = TIFFmin(*r, cielab->display.d_Vrwr);
+	*g = TIFFmin(*g, cielab->display.d_Vrwg);
+	*b = TIFFmin(*b, cielab->display.d_Vrwb);
+}
+#undef RINT
+
+/* 
+ * Allocate conversion state structures and make look_up tables for
+ * the Yr,Yb,Yg <=> r,g,b conversions.
+ */
+int
+TIFFCIELabToRGBInit(TIFFCIELabToRGB* cielab,
+		    TIFFDisplay *display, float *refWhite)
+{
+	int i;
+	double gamma;
+
+	cielab->range = CIELABTORGB_TABLE_RANGE;
+
+	_TIFFmemcpy(&cielab->display, display, sizeof(TIFFDisplay));
+
+	/* Red */
+	gamma = 1.0 / cielab->display.d_gammaR ;
+	cielab->rstep =
+		(cielab->display.d_YCR - cielab->display.d_Y0R)	/ cielab->range;
+	for(i = 0; i <= cielab->range; i++) {
+		cielab->Yr2r[i] = cielab->display.d_Vrwr
+		    * ((float)pow((double)i / cielab->range, gamma));
+	}
+
+	/* Green */
+	gamma = 1.0 / cielab->display.d_gammaG ;
+	cielab->gstep =
+	    (cielab->display.d_YCR - cielab->display.d_Y0R) / cielab->range;
+	for(i = 0; i <= cielab->range; i++) {
+		cielab->Yg2g[i] = cielab->display.d_Vrwg
+		    * ((float)pow((double)i / cielab->range, gamma));
+	}
+
+	/* Blue */
+	gamma = 1.0 / cielab->display.d_gammaB ;
+	cielab->bstep =
+	    (cielab->display.d_YCR - cielab->display.d_Y0R) / cielab->range;
+	for(i = 0; i <= cielab->range; i++) {
+		cielab->Yb2b[i] = cielab->display.d_Vrwb
+		    * ((float)pow((double)i / cielab->range, gamma));
+	}
+
+	/* Init reference white point */
+	cielab->X0 = refWhite[0];
+	cielab->Y0 = refWhite[1];
+	cielab->Z0 = refWhite[2];
+
+	return 0;
+}
+
+/* 
+ * Convert color value from the YCbCr space to CIE XYZ.
+ * The colorspace conversion algorithm comes from the IJG v5a code;
+ * see below for more information on how it works.
+ */
+#define	SHIFT			16
+#define	FIX(x)			((int32)((x) * (1L<<SHIFT) + 0.5))
+#define	ONE_HALF		((int32)(1<<(SHIFT-1)))
+#define	Code2V(c, RB, RW, CR)	((((c)-(int32)(RB))*(float)(CR))/(float)(((RW)-(RB)) ? ((RW)-(RB)) : 1))
+#define	CLAMP(f,min,max)	((f)<(min)?(min):(f)>(max)?(max):(f))
+#define HICLAMP(f,max)		((f)>(max)?(max):(f))
+
+void
+TIFFYCbCrtoRGB(TIFFYCbCrToRGB *ycbcr, uint32 Y, int32 Cb, int32 Cr,
+	       uint32 *r, uint32 *g, uint32 *b)
+{
+	/* XXX: Only 8-bit YCbCr input supported for now */
+	Y = HICLAMP(Y, 255), Cb = CLAMP(Cb, 0, 255), Cr = CLAMP(Cr, 0, 255);
+
+	*r = ycbcr->clamptab[ycbcr->Y_tab[Y] + ycbcr->Cr_r_tab[Cr]];
+	*g = ycbcr->clamptab[ycbcr->Y_tab[Y]
+	    + (int)((ycbcr->Cb_g_tab[Cb] + ycbcr->Cr_g_tab[Cr]) >> SHIFT)];
+	*b = ycbcr->clamptab[ycbcr->Y_tab[Y] + ycbcr->Cb_b_tab[Cb]];
+}
+
+/*
+ * Initialize the YCbCr->RGB conversion tables.  The conversion
+ * is done according to the 6.0 spec:
+ *
+ *    R = Y + Cr*(2 - 2*LumaRed)
+ *    B = Y + Cb*(2 - 2*LumaBlue)
+ *    G =   Y
+ *        - LumaBlue*Cb*(2-2*LumaBlue)/LumaGreen
+ *        - LumaRed*Cr*(2-2*LumaRed)/LumaGreen
+ *
+ * To avoid floating point arithmetic the fractional constants that
+ * come out of the equations are represented as fixed point values
+ * in the range 0...2^16.  We also eliminate multiplications by
+ * pre-calculating possible values indexed by Cb and Cr (this code
+ * assumes conversion is being done for 8-bit samples).
+ */
+int
+TIFFYCbCrToRGBInit(TIFFYCbCrToRGB* ycbcr, float *luma, float *refBlackWhite)
+{
+    TIFFRGBValue* clamptab;
+    int i;
+    
+#define LumaRed	    luma[0]
+#define LumaGreen   luma[1]
+#define LumaBlue    luma[2]
+
+    clamptab = (TIFFRGBValue*)(
+	(tidata_t) ycbcr+TIFFroundup(sizeof (TIFFYCbCrToRGB), sizeof (long)));
+    _TIFFmemset(clamptab, 0, 256);		/* v < 0 => 0 */
+    ycbcr->clamptab = (clamptab += 256);
+    for (i = 0; i < 256; i++)
+	clamptab[i] = (TIFFRGBValue) i;
+    _TIFFmemset(clamptab+256, 255, 2*256);	/* v > 255 => 255 */
+    ycbcr->Cr_r_tab = (int*) (clamptab + 3*256);
+    ycbcr->Cb_b_tab = ycbcr->Cr_r_tab + 256;
+    ycbcr->Cr_g_tab = (int32*) (ycbcr->Cb_b_tab + 256);
+    ycbcr->Cb_g_tab = ycbcr->Cr_g_tab + 256;
+    ycbcr->Y_tab = ycbcr->Cb_g_tab + 256;
+
+    { float f1 = 2-2*LumaRed;		int32 D1 = FIX(f1);
+      float f2 = LumaRed*f1/LumaGreen;	int32 D2 = -FIX(f2);
+      float f3 = 2-2*LumaBlue;		int32 D3 = FIX(f3);
+      float f4 = LumaBlue*f3/LumaGreen;	int32 D4 = -FIX(f4);
+      int x;
+
+#undef LumaBlue
+#undef LumaGreen
+#undef LumaRed
+      
+      /*
+       * i is the actual input pixel value in the range 0..255
+       * Cb and Cr values are in the range -128..127 (actually
+       * they are in a range defined by the ReferenceBlackWhite
+       * tag) so there is some range shifting to do here when
+       * constructing tables indexed by the raw pixel data.
+       */
+      for (i = 0, x = -128; i < 256; i++, x++) {
+	    int32 Cr = (int32)Code2V(x, refBlackWhite[4] - 128.0F,
+			    refBlackWhite[5] - 128.0F, 127);
+	    int32 Cb = (int32)Code2V(x, refBlackWhite[2] - 128.0F,
+			    refBlackWhite[3] - 128.0F, 127);
+
+	    ycbcr->Cr_r_tab[i] = (int32)((D1*Cr + ONE_HALF)>>SHIFT);
+	    ycbcr->Cb_b_tab[i] = (int32)((D3*Cb + ONE_HALF)>>SHIFT);
+	    ycbcr->Cr_g_tab[i] = D2*Cr;
+	    ycbcr->Cb_g_tab[i] = D4*Cb + ONE_HALF;
+	    ycbcr->Y_tab[i] =
+		    (int32)Code2V(x + 128, refBlackWhite[0], refBlackWhite[1], 255);
+      }
+    }
+
+    return 0;
+}
+#undef	HICLAMP
+#undef	CLAMP
+#undef	Code2V
+#undef	SHIFT
+#undef	ONE_HALF
+#undef	FIX
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_compress.c b/src/libtiff/tif_compress.c
new file mode 100644
index 0000000..cbbb295
--- /dev/null
+++ b/src/libtiff/tif_compress.c
@@ -0,0 +1,286 @@
+/* $Id: tif_compress.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library
+ *
+ * Compression Scheme Configuration Support.
+ */
+#include "tiffiop.h"
+
+static int
+TIFFNoEncode(TIFF* tif, const char* method)
+{
+	const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
+
+	if (c) { 
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%s %s encoding is not implemented",
+                          c->name, method);
+	} else { 
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			  "Compression scheme %u %s encoding is not implemented",
+		    tif->tif_dir.td_compression, method);
+	}
+	return (-1);
+}
+
+int
+_TIFFNoRowEncode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+	(void) pp; (void) cc; (void) s;
+	return (TIFFNoEncode(tif, "scanline"));
+}
+
+int
+_TIFFNoStripEncode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+	(void) pp; (void) cc; (void) s;
+	return (TIFFNoEncode(tif, "strip"));
+}
+
+int
+_TIFFNoTileEncode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+	(void) pp; (void) cc; (void) s;
+	return (TIFFNoEncode(tif, "tile"));
+}
+
+static int
+TIFFNoDecode(TIFF* tif, const char* method)
+{
+	const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
+
+	if (c)
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%s %s decoding is not implemented",
+		    c->name, method);
+	else
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "Compression scheme %u %s decoding is not implemented",
+		    tif->tif_dir.td_compression, method);
+	return (-1);
+}
+
+int
+_TIFFNoRowDecode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+	(void) pp; (void) cc; (void) s;
+	return (TIFFNoDecode(tif, "scanline"));
+}
+
+int
+_TIFFNoStripDecode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+	(void) pp; (void) cc; (void) s;
+	return (TIFFNoDecode(tif, "strip"));
+}
+
+int
+_TIFFNoTileDecode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+	(void) pp; (void) cc; (void) s;
+	return (TIFFNoDecode(tif, "tile"));
+}
+
+int
+_TIFFNoSeek(TIFF* tif, uint32 off)
+{
+	(void) off;
+	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    "Compression algorithm does not support random access");
+	return (0);
+}
+
+int
+_TIFFNoPreCode(TIFF* tif, tsample_t s)
+{
+	(void) tif; (void) s;
+	return (1);
+}
+
+static int _TIFFtrue(TIFF* tif) { (void) tif; return (1); }
+static void _TIFFvoid(TIFF* tif) { (void) tif; }
+
+void
+_TIFFSetDefaultCompressionState(TIFF* tif)
+{
+	tif->tif_decodestatus = TRUE;
+	tif->tif_setupdecode = _TIFFtrue;
+	tif->tif_predecode = _TIFFNoPreCode;
+	tif->tif_decoderow = _TIFFNoRowDecode;
+	tif->tif_decodestrip = _TIFFNoStripDecode;
+	tif->tif_decodetile = _TIFFNoTileDecode;
+	tif->tif_encodestatus = TRUE;
+	tif->tif_setupencode = _TIFFtrue;
+	tif->tif_preencode = _TIFFNoPreCode;
+	tif->tif_postencode = _TIFFtrue;
+	tif->tif_encoderow = _TIFFNoRowEncode;
+	tif->tif_encodestrip = _TIFFNoStripEncode;
+	tif->tif_encodetile = _TIFFNoTileEncode;
+	tif->tif_close = _TIFFvoid;
+	tif->tif_seek = _TIFFNoSeek;
+	tif->tif_cleanup = _TIFFvoid;
+	tif->tif_defstripsize = _TIFFDefaultStripSize;
+	tif->tif_deftilesize = _TIFFDefaultTileSize;
+	tif->tif_flags &= ~TIFF_NOBITREV;
+}
+
+int
+TIFFSetCompressionScheme(TIFF* tif, int scheme)
+{
+	const TIFFCodec *c = TIFFFindCODEC((uint16) scheme);
+
+	_TIFFSetDefaultCompressionState(tif);
+	/*
+	 * Don't treat an unknown compression scheme as an error.
+	 * This permits applications to open files with data that
+	 * the library does not have builtin support for, but which
+	 * may still be meaningful.
+	 */
+	return (c ? (*c->init)(tif, scheme) : 1);
+}
+
+/*
+ * Other compression schemes may be registered.  Registered
+ * schemes can also override the builtin versions provided
+ * by this library.
+ */
+typedef struct _codec {
+	struct _codec*	next;
+	TIFFCodec*	info;
+} codec_t;
+static	codec_t* registeredCODECS = NULL;
+
+const TIFFCodec*
+TIFFFindCODEC(uint16 scheme)
+{
+	const TIFFCodec* c;
+	codec_t* cd;
+
+	for (cd = registeredCODECS; cd; cd = cd->next)
+		if (cd->info->scheme == scheme)
+			return ((const TIFFCodec*) cd->info);
+	for (c = _TIFFBuiltinCODECS; c->name; c++)
+		if (c->scheme == scheme)
+			return (c);
+	return ((const TIFFCodec*) 0);
+}
+
+TIFFCodec*
+TIFFRegisterCODEC(uint16 scheme, const char* name, TIFFInitMethod init)
+{
+	codec_t* cd = (codec_t*)
+	    _TIFFmalloc(sizeof (codec_t) + sizeof (TIFFCodec) + strlen(name)+1);
+
+	if (cd != NULL) {
+		cd->info = (TIFFCodec*) ((tidata_t) cd + sizeof (codec_t));
+		cd->info->name = (char*)
+		    ((tidata_t) cd->info + sizeof (TIFFCodec));
+		strcpy(cd->info->name, name);
+		cd->info->scheme = scheme;
+		cd->info->init = init;
+		cd->next = registeredCODECS;
+		registeredCODECS = cd;
+	} else {
+		TIFFErrorExt(0, "TIFFRegisterCODEC",
+		    "No space to register compression scheme %s", name);
+		return NULL;
+	}
+	return (cd->info);
+}
+
+void
+TIFFUnRegisterCODEC(TIFFCodec* c)
+{
+	codec_t* cd;
+	codec_t** pcd;
+
+	for (pcd = &registeredCODECS; (cd = *pcd); pcd = &cd->next)
+		if (cd->info == c) {
+			*pcd = cd->next;
+			_TIFFfree(cd);
+			return;
+		}
+	TIFFErrorExt(0, "TIFFUnRegisterCODEC",
+	    "Cannot remove compression scheme %s; not registered", c->name);
+}
+
+/************************************************************************/
+/*                       TIFFGetConfisuredCODECs()                      */
+/************************************************************************/
+
+/**
+ * Get list of configured codecs, both built-in and registered by user.
+ * Caller is responsible to free this structure.
+ * 
+ * @return returns array of TIFFCodec records (the last record should be NULL)
+ * or NULL if function failed.
+ */
+
+TIFFCodec*
+TIFFGetConfiguredCODECs()
+{
+	int		i = 1;
+        codec_t		*cd;
+        const TIFFCodec	*c;
+	TIFFCodec	*codecs = NULL, *new_codecs;
+
+        for (cd = registeredCODECS; cd; cd = cd->next) {
+                new_codecs = (TIFFCodec *)
+			_TIFFrealloc(codecs, i * sizeof(TIFFCodec));
+		if (!new_codecs) {
+			_TIFFfree (codecs);
+			return NULL;
+		}
+		codecs = new_codecs;
+		_TIFFmemcpy(codecs + i - 1, cd, sizeof(TIFFCodec));
+		i++;
+	}
+        for (c = _TIFFBuiltinCODECS; c->name; c++) {
+                if (TIFFIsCODECConfigured(c->scheme)) {
+                        new_codecs = (TIFFCodec *)
+				_TIFFrealloc(codecs, i * sizeof(TIFFCodec));
+			if (!new_codecs) {
+				_TIFFfree (codecs);
+				return NULL;
+			}
+			codecs = new_codecs;
+			_TIFFmemcpy(codecs + i - 1, (const tdata_t)c, sizeof(TIFFCodec));
+			i++;
+		}
+	}
+
+	new_codecs = (TIFFCodec *) _TIFFrealloc(codecs, i * sizeof(TIFFCodec));
+	if (!new_codecs) {
+		_TIFFfree (codecs);
+		return NULL;
+	}
+	codecs = new_codecs;
+	_TIFFmemset(codecs + i - 1, 0, sizeof(TIFFCodec));
+
+        return codecs;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_config.h b/src/libtiff/tif_config.h
new file mode 100644
index 0000000..f9db461
--- /dev/null
+++ b/src/libtiff/tif_config.h
@@ -0,0 +1,263 @@
+/* libtiff/tif_config.h.in.  IMLIB - Modified for IM  */
+
+/* Support CCITT Group 3 & 4 algorithms */
+#define CCITT_SUPPORT
+
+/* Pick up YCbCr subsampling info from the JPEG data stream to support files
+   lacking the tag (default enabled). */
+#define CHECK_JPEG_YCBCR_SUBSAMPLING
+
+/* Support C++ stream API (requires C++ compiler) */
+#undef CXX_SUPPORT
+
+/* Treat extra sample as alpha (default enabled). The RGBA interface will
+   treat a fourth sample with no EXTRASAMPLE_ value as being ASSOCALPHA. Many
+   packages produce RGBA files but don't mark the alpha properly. */
+#define DEFAULT_EXTRASAMPLE_AS_ALPHA
+
+/* Use the Apple OpenGL framework. */
+#undef HAVE_APPLE_OPENGL_FRAMEWORK
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H
+
+/* Define to 1 if you have the `floor' function. */
+#define HAVE_FLOOR
+
+/* Define to 1 if you have the `getopt' function. */
+#undef HAVE_GETOPT
+
+/* Define as 0 or 1 according to the floating point format suported by the
+   machine */
+#define HAVE_IEEEFP
+
+/* Define to 1 if the system has the type `int16'. */
+/* #undef HAVE_INT16 */
+
+/* Define to 1 if the system has the type `int32'. */
+/* #undef HAVE_INT32 */
+
+/* Define to 1 if the system has the type `int8'. */
+/* #undef HAVE_INT8 */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `isascii' function. */
+#undef HAVE_ISASCII
+
+/* Define to 1 if you have the `lfind' function. */
+#undef HAVE_LFIND
+
+/* Define to 1 if you have the `c' library (-lc). */
+#undef HAVE_LIBC
+
+/* Define to 1 if you have the `m' library (-lm). */
+#undef HAVE_LIBM
+
+/* Define to 1 if you have the <limits.h> header file. */
+#undef HAVE_LIMITS_H
+
+/* Define to 1 if you have the <malloc.h> header file. */
+#undef HAVE_MALLOC_H
+
+/* Define to 1 if you have the `memmove' function. */
+#undef HAVE_MEMMOVE
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `memset' function. */
+#undef HAVE_MEMSET
+
+/* Define to 1 if you have the `mmap' function. */
+#undef HAVE_MMAP
+
+/* Define to 1 if you have the `pow' function. */
+#undef HAVE_POW
+
+/* Define if you have POSIX threads libraries and header files. */
+#undef HAVE_PTHREAD
+
+/* Define to 1 if you have the <search.h> header file. */
+/* #undef HAVE_SEARCH_H */
+
+/* Define to 1 if you have the `sqrt' function. */
+#undef HAVE_SQRT
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#undef HAVE_STRCASECMP
+
+/* Define to 1 if you have the `strchr' function. */
+#undef HAVE_STRCHR
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H
+
+/* Define to 1 if you have the `strrchr' function. */
+#undef HAVE_STRRCHR
+
+/* Define to 1 if you have the `strstr' function. */
+#undef HAVE_STRSTR
+
+/* Define to 1 if you have the `strtol' function. */
+#undef HAVE_STRTOL
+
+/* Define to 1 if you have the `strtoul' function. */
+#undef HAVE_STRTOUL
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#undef HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the <windows.h> header file. */
+#undef HAVE_WINDOWS_H
+
+/* Native cpu byte order: 1 if big-endian (Motorola) or 0 if little-endian
+   (Intel) */
+#undef HOST_BIGENDIAN
+
+/* Set the native cpu bit order (FILLORDER_LSB2MSB or FILLORDER_MSB2LSB) */
+#define HOST_FILLORDER FILLORDER_LSB2MSB  /* Not used by IM */
+
+/* Support JPEG compression (requires IJG JPEG library) */
+#define JPEG_SUPPORT
+
+/* Support LogLuv high dynamic range encoding */
+#define LOGLUV_SUPPORT
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
+/* Support LZW algorithm */
+#define LZW_SUPPORT
+
+/* Support Microsoft Document Imaging format */
+#define MDI_SUPPORT 1
+
+/* Support NeXT 2-bit RLE algorithm */
+#define NEXT_SUPPORT
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+#undef NO_MINUS_C_MINUS_O
+
+/* Support Old JPEG compresson (read contrib/ojpeg/README first! Compilation
+   fails with unpatched IJG JPEG library) */
+#define OJPEG_SUPPORT
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Support Macintosh PackBits algorithm */
+#define PACKBITS_SUPPORT
+
+/* Support Pixar log-format algorithm (requires Zlib) */
+#define PIXARLOG_SUPPORT
+
+/* Define to necessary symbol if this constant uses a non-standard name on
+   your system. */
+#undef PTHREAD_CREATE_JOINABLE
+
+/* The size of a `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of a `long', as computed by sizeof. */
+/* #define SIZEOF_LONG 8  -  Used by "tif_fax3.c" for 64 bits. */
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Support strip chopping (whether or not to convert single-strip uncompressed
+   images to mutiple strips of specified size to reduce memory usage) */
+#undef STRIPCHOP_DEFAULT
+
+/* Default size of the strip in bytes (when strip chopping enabled) */
+#undef STRIP_SIZE_DEFAULT
+
+/* Enable SubIFD tag (330) support */
+#define SUBIFD_SUPPORT
+
+/* Support ThunderScan 4-bit RLE algorithm */
+#define THUNDER_SUPPORT
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#undef TIME_WITH_SYS_TIME
+
+/* Define to 1 if your <sys/time.h> declares `struct tm'. */
+#undef TM_IN_SYS_TIME
+
+/* Version number of package */
+#undef VERSION
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+/* #undef WORDS_BIGENDIAN  -  Defined in the config.mak fo IM */
+
+/* Define to 1 if the X Window System is missing or not being used. */
+#undef X_DISPLAY_MISSING
+
+/* Support Deflate compression */
+#define ZIP_SUPPORT
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#define inline
+#endif
+
+/* Define to `long' if <sys/types.h> does not define. */
+/* #undef off_t */
+
+/* Define to `unsigned' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* To avoid the inclusion of <windows.h> */
+#define AVOID_WIN32_FILEIO 1
diff --git a/src/libtiff/tif_dir.c b/src/libtiff/tif_dir.c
new file mode 100644
index 0000000..f2d1ee7
--- /dev/null
+++ b/src/libtiff/tif_dir.c
@@ -0,0 +1,1350 @@
+/* $Id: tif_dir.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Tag Get & Set Routines.
+ * (and also some miscellaneous stuff)
+ */
+#include "tiffiop.h"
+
+/*
+ * These are used in the backwards compatibility code...
+ */
+#define DATATYPE_VOID		0       /* !untyped data */
+#define DATATYPE_INT		1       /* !signed integer data */
+#define DATATYPE_UINT		2       /* !unsigned integer data */
+#define DATATYPE_IEEEFP		3       /* !IEEE floating point data */
+
+static void
+setByteArray(void** vpp, void* vp, size_t nmemb, size_t elem_size)
+{
+	if (*vpp)
+		_TIFFfree(*vpp), *vpp = 0;
+	if (vp) {
+		tsize_t	bytes = nmemb * elem_size;
+		if (elem_size && bytes / elem_size == nmemb)
+			*vpp = (void*) _TIFFmalloc(bytes);
+		if (*vpp)
+			_TIFFmemcpy(*vpp, vp, bytes);
+	}
+}
+void _TIFFsetByteArray(void** vpp, void* vp, uint32 n)
+    { setByteArray(vpp, vp, n, 1); }
+void _TIFFsetString(char** cpp, char* cp)
+    { setByteArray((void**) cpp, (void*) cp, strlen(cp)+1, 1); }
+void _TIFFsetNString(char** cpp, char* cp, uint32 n)
+    { setByteArray((void**) cpp, (void*) cp, n, 1); }
+void _TIFFsetShortArray(uint16** wpp, uint16* wp, uint32 n)
+    { setByteArray((void**) wpp, (void*) wp, n, sizeof (uint16)); }
+void _TIFFsetLongArray(uint32** lpp, uint32* lp, uint32 n)
+    { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint32)); }
+void _TIFFsetFloatArray(float** fpp, float* fp, uint32 n)
+    { setByteArray((void**) fpp, (void*) fp, n, sizeof (float)); }
+void _TIFFsetDoubleArray(double** dpp, double* dp, uint32 n)
+    { setByteArray((void**) dpp, (void*) dp, n, sizeof (double)); }
+
+/*
+ * Install extra samples information.
+ */
+static int
+setExtraSamples(TIFFDirectory* td, va_list ap, uint32* v)
+{
+	uint16* va;
+	uint32 i;
+
+	*v = va_arg(ap, uint32);
+	if ((uint16) *v > td->td_samplesperpixel)
+		return (0);
+	va = va_arg(ap, uint16*);
+	if (*v > 0 && va == NULL)		/* typically missing param */
+		return (0);
+	for (i = 0; i < *v; i++)
+		if (va[i] > EXTRASAMPLE_UNASSALPHA)
+			return (0);
+	td->td_extrasamples = (uint16) *v;
+	_TIFFsetShortArray(&td->td_sampleinfo, va, td->td_extrasamples);
+	return (1);
+}
+
+static uint32
+checkInkNamesString(TIFF* tif, uint32 slen, const char* s)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+	uint16 i = td->td_samplesperpixel;
+
+	if (slen > 0) {
+		const char* ep = s+slen;
+		const char* cp = s;
+		for (; i > 0; i--) {
+			for (; *cp != '\0'; cp++)
+				if (cp >= ep)
+					goto bad;
+			cp++;				/* skip \0 */
+		}
+		return (cp-s);
+	}
+bad:
+	TIFFErrorExt(tif->tif_clientdata, "TIFFSetField",
+	    "%s: Invalid InkNames value; expecting %d names, found %d",
+	    tif->tif_name,
+	    td->td_samplesperpixel,
+	    td->td_samplesperpixel-i);
+	return (0);
+}
+
+static int
+_TIFFVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	static const char module[] = "_TIFFVSetField";
+	
+	TIFFDirectory* td = &tif->tif_dir;
+	int status = 1;
+	uint32 v32, i, v;
+	char* s;
+
+	switch (tag) {
+	case TIFFTAG_SUBFILETYPE:
+		td->td_subfiletype = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_IMAGEWIDTH:
+		td->td_imagewidth = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_IMAGELENGTH:
+		td->td_imagelength = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_BITSPERSAMPLE:
+		td->td_bitspersample = (uint16) va_arg(ap, int);
+		/*
+		 * If the data require post-decoding processing to byte-swap
+		 * samples, set it up here.  Note that since tags are required
+		 * to be ordered, compression code can override this behaviour
+		 * in the setup method if it wants to roll the post decoding
+		 * work in with its normal work.
+		 */
+		if (tif->tif_flags & TIFF_SWAB) {
+			if (td->td_bitspersample == 16)
+				tif->tif_postdecode = _TIFFSwab16BitData;
+			else if (td->td_bitspersample == 24)
+				tif->tif_postdecode = _TIFFSwab24BitData;
+			else if (td->td_bitspersample == 32)
+				tif->tif_postdecode = _TIFFSwab32BitData;
+			else if (td->td_bitspersample == 64)
+				tif->tif_postdecode = _TIFFSwab64BitData;
+			else if (td->td_bitspersample == 128) /* two 64's */
+				tif->tif_postdecode = _TIFFSwab64BitData;
+		}
+		break;
+	case TIFFTAG_COMPRESSION:
+		v = va_arg(ap, uint32) & 0xffff;
+		/*
+		 * If we're changing the compression scheme, the notify the
+		 * previous module so that it can cleanup any state it's
+		 * setup.
+		 */
+		if (TIFFFieldSet(tif, FIELD_COMPRESSION)) {
+			if (td->td_compression == v)
+				break;
+			(*tif->tif_cleanup)(tif);
+			tif->tif_flags &= ~TIFF_CODERSETUP;
+		}
+		/*
+		 * Setup new compression routine state.
+		 */
+		if( (status = TIFFSetCompressionScheme(tif, v)) != 0 )
+                    td->td_compression = (uint16) v;
+                else
+                    status = 0;
+		break;
+	case TIFFTAG_PHOTOMETRIC:
+		td->td_photometric = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_THRESHHOLDING:
+		td->td_threshholding = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_FILLORDER:
+		v = va_arg(ap, uint32);
+		if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB)
+			goto badvalue;
+		td->td_fillorder = (uint16) v;
+		break;
+		break;
+	case TIFFTAG_ORIENTATION:
+		v = va_arg(ap, uint32);
+		if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v) {
+			TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+			    "Bad value %lu for \"%s\" tag ignored",
+			    v, _TIFFFieldWithTag(tif, tag)->field_name);
+		} else
+			td->td_orientation = (uint16) v;
+		break;
+	case TIFFTAG_SAMPLESPERPIXEL:
+		/* XXX should cross check -- e.g. if pallette, then 1 */
+		v = va_arg(ap, uint32);
+		if (v == 0)
+			goto badvalue;
+		td->td_samplesperpixel = (uint16) v;
+		break;
+	case TIFFTAG_ROWSPERSTRIP:
+		v32 = va_arg(ap, uint32);
+		if (v32 == 0)
+			goto badvalue32;
+		td->td_rowsperstrip = v32;
+		if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
+			td->td_tilelength = v32;
+			td->td_tilewidth = td->td_imagewidth;
+		}
+		break;
+	case TIFFTAG_MINSAMPLEVALUE:
+		td->td_minsamplevalue = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_MAXSAMPLEVALUE:
+		td->td_maxsamplevalue = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_SMINSAMPLEVALUE:
+		td->td_sminsamplevalue = va_arg(ap, double);
+		break;
+	case TIFFTAG_SMAXSAMPLEVALUE:
+		td->td_smaxsamplevalue = va_arg(ap, double);
+		break;
+	case TIFFTAG_XRESOLUTION:
+		td->td_xresolution = (float) va_arg(ap, double);
+		break;
+	case TIFFTAG_YRESOLUTION:
+		td->td_yresolution = (float) va_arg(ap, double);
+		break;
+	case TIFFTAG_PLANARCONFIG:
+		v = va_arg(ap, uint32);
+		if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE)
+			goto badvalue;
+		td->td_planarconfig = (uint16) v;
+		break;
+	case TIFFTAG_XPOSITION:
+		td->td_xposition = (float) va_arg(ap, double);
+		break;
+	case TIFFTAG_YPOSITION:
+		td->td_yposition = (float) va_arg(ap, double);
+		break;
+	case TIFFTAG_RESOLUTIONUNIT:
+		v = va_arg(ap, uint32);
+		if (v < RESUNIT_NONE || RESUNIT_CENTIMETER < v)
+			goto badvalue;
+		td->td_resolutionunit = (uint16) v;
+		break;
+	case TIFFTAG_PAGENUMBER:
+		td->td_pagenumber[0] = (uint16) va_arg(ap, int);
+		td->td_pagenumber[1] = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_HALFTONEHINTS:
+		td->td_halftonehints[0] = (uint16) va_arg(ap, int);
+		td->td_halftonehints[1] = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_COLORMAP:
+		v32 = (uint32)(1L<<td->td_bitspersample);
+		_TIFFsetShortArray(&td->td_colormap[0], va_arg(ap, uint16*), v32);
+		_TIFFsetShortArray(&td->td_colormap[1], va_arg(ap, uint16*), v32);
+		_TIFFsetShortArray(&td->td_colormap[2], va_arg(ap, uint16*), v32);
+		break;
+	case TIFFTAG_EXTRASAMPLES:
+		if (!setExtraSamples(td, ap, &v))
+			goto badvalue;
+		break;
+	case TIFFTAG_MATTEING:
+		td->td_extrasamples = (uint16) (va_arg(ap, int) != 0);
+		if (td->td_extrasamples) {
+			uint16 sv = EXTRASAMPLE_ASSOCALPHA;
+			_TIFFsetShortArray(&td->td_sampleinfo, &sv, 1);
+		}
+		break;
+	case TIFFTAG_TILEWIDTH:
+		v32 = va_arg(ap, uint32);
+		if (v32 % 16) {
+			if (tif->tif_mode != O_RDONLY)
+				goto badvalue32;
+			TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+				"Nonstandard tile width %d, convert file", v32);
+		}
+		td->td_tilewidth = v32;
+		tif->tif_flags |= TIFF_ISTILED;
+		break;
+	case TIFFTAG_TILELENGTH:
+		v32 = va_arg(ap, uint32);
+		if (v32 % 16) {
+			if (tif->tif_mode != O_RDONLY)
+				goto badvalue32;
+			TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+			    "Nonstandard tile length %d, convert file", v32);
+		}
+		td->td_tilelength = v32;
+		tif->tif_flags |= TIFF_ISTILED;
+		break;
+	case TIFFTAG_TILEDEPTH:
+		v32 = va_arg(ap, uint32);
+		if (v32 == 0)
+			goto badvalue32;
+		td->td_tiledepth = v32;
+		break;
+	case TIFFTAG_DATATYPE:
+		v = va_arg(ap, uint32);
+		switch (v) {
+		case DATATYPE_VOID:	v = SAMPLEFORMAT_VOID;	break;
+		case DATATYPE_INT:	v = SAMPLEFORMAT_INT;	break;
+		case DATATYPE_UINT:	v = SAMPLEFORMAT_UINT;	break;
+		case DATATYPE_IEEEFP:	v = SAMPLEFORMAT_IEEEFP;break;
+		default:		goto badvalue;
+		}
+		td->td_sampleformat = (uint16) v;
+		break;
+	case TIFFTAG_SAMPLEFORMAT:
+		v = va_arg(ap, uint32);
+		if (v < SAMPLEFORMAT_UINT || SAMPLEFORMAT_COMPLEXIEEEFP < v)
+			goto badvalue;
+		td->td_sampleformat = (uint16) v;
+
+                /*  Try to fix up the SWAB function for complex data. */
+                if( td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT 
+                    && td->td_bitspersample == 32
+                    && tif->tif_postdecode == _TIFFSwab32BitData )
+                    tif->tif_postdecode = _TIFFSwab16BitData;
+                else if( (td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT 
+                          || td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP)
+                         && td->td_bitspersample == 64
+                         && tif->tif_postdecode == _TIFFSwab64BitData )
+                    tif->tif_postdecode = _TIFFSwab32BitData;
+		break;
+	case TIFFTAG_IMAGEDEPTH:
+		td->td_imagedepth = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_SUBIFD:
+		if ((tif->tif_flags & TIFF_INSUBIFD) == 0) {
+			td->td_nsubifd = (uint16) va_arg(ap, int);
+			_TIFFsetLongArray(&td->td_subifd, va_arg(ap, uint32*),
+			    (long) td->td_nsubifd);
+		} else {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: Sorry, cannot nest SubIFDs",
+				  tif->tif_name);
+			status = 0;
+		}
+		break;
+	case TIFFTAG_YCBCRPOSITIONING:
+		td->td_ycbcrpositioning = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_YCBCRSUBSAMPLING:
+		td->td_ycbcrsubsampling[0] = (uint16) va_arg(ap, int);
+		td->td_ycbcrsubsampling[1] = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_TRANSFERFUNCTION:
+		v = (td->td_samplesperpixel - td->td_extrasamples) > 1 ? 3 : 1;
+		for (i = 0; i < v; i++)
+			_TIFFsetShortArray(&td->td_transferfunction[i],
+			    va_arg(ap, uint16*), 1L<<td->td_bitspersample);
+		break;
+	case TIFFTAG_INKNAMES:
+		v = va_arg(ap, uint32);
+		s = va_arg(ap, char*);
+		v = checkInkNamesString(tif, v, s);
+                status = v > 0;
+		if( v > 0 ) {
+			_TIFFsetNString(&td->td_inknames, s, v);
+			td->td_inknameslen = v;
+		}
+		break;
+        default: {
+            const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
+            TIFFTagValue *tv;
+            int tv_size, iCustom;
+
+            /*
+	     * This can happen if multiple images are open with different
+	     * codecs which have private tags.  The global tag information
+	     * table may then have tags that are valid for one file but not
+	     * the other. If the client tries to set a tag that is not valid
+	     * for the image's codec then we'll arrive here.  This
+	     * happens, for example, when tiffcp is used to convert between
+	     * compression schemes and codec-specific tags are blindly copied.
+             */
+            if(fip == NULL || fip->field_bit != FIELD_CUSTOM) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+		    "%s: Invalid %stag \"%s\" (not supported by codec)",
+		    tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "",
+		    _TIFFFieldWithTag(tif, tag)->field_name);
+		status = 0;
+		break;
+            }
+
+            /*
+             * Find the existing entry for this custom value.
+             */
+            tv = NULL;
+            for(iCustom = 0; iCustom < td->td_customValueCount; iCustom++) {
+                if(td->td_customValues[iCustom].info == fip) {
+                    tv = td->td_customValues + iCustom;
+                    if(tv->value != NULL)
+                    {
+                        _TIFFfree(tv->value);
+                        tv->value = NULL;
+                    }
+                    break;
+                }
+            }
+
+            /*
+             * Grow the custom list if the entry was not found.
+             */
+            if(tv == NULL) {
+		TIFFTagValue	*new_customValues;
+		
+		td->td_customValueCount++;
+		new_customValues = (TIFFTagValue *)
+			_TIFFrealloc(td->td_customValues,
+				     sizeof(TIFFTagValue) * td->td_customValueCount);
+		if (!new_customValues) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+		"%s: Failed to allocate space for list of custom values",
+				  tif->tif_name);
+			status = 0;
+			goto end;
+		}
+
+		td->td_customValues = new_customValues;
+
+                tv = td->td_customValues + (td->td_customValueCount-1);
+                tv->info = fip;
+                tv->value = NULL;
+                tv->count = 0;
+            }
+
+            /*
+             * Set custom value ... save a copy of the custom tag value.
+             */
+	    tv_size = _TIFFDataSize(fip->field_type);
+	    if (tv_size == 0) {
+		    status = 0;
+		    TIFFErrorExt(tif->tif_clientdata, module,
+				 "%s: Bad field type %d for \"%s\"",
+				 tif->tif_name, fip->field_type,
+				 fip->field_name);
+		    goto end;
+	    }
+           
+            if(fip->field_passcount) {
+		    if (fip->field_writecount == TIFF_VARIABLE2)
+			tv->count = (uint32) va_arg(ap, uint32);
+		    else
+			tv->count = (int) va_arg(ap, int);
+	    } else if (fip->field_writecount == TIFF_VARIABLE
+		       || fip->field_writecount == TIFF_VARIABLE2)
+		tv->count = 1;
+	    else if (fip->field_writecount == TIFF_SPP)
+		tv->count = td->td_samplesperpixel;
+	    else
+                tv->count = fip->field_writecount;
+            
+    
+	    if (fip->field_type == TIFF_ASCII)
+		    _TIFFsetString((char **)&tv->value, va_arg(ap, char *));
+	    else {
+                tv->value = _TIFFmalloc(tv_size * tv->count);
+		if (!tv->value) {
+		    status = 0;
+		    goto end;
+		}
+
+		if ((fip->field_passcount
+		    || fip->field_writecount == TIFF_VARIABLE
+		    || fip->field_writecount == TIFF_VARIABLE2
+		    || fip->field_writecount == TIFF_SPP
+		    || tv->count > 1)
+		    && fip->field_tag != TIFFTAG_PAGENUMBER
+		    && fip->field_tag != TIFFTAG_HALFTONEHINTS
+		    && fip->field_tag != TIFFTAG_YCBCRSUBSAMPLING
+		    && fip->field_tag != TIFFTAG_DOTRANGE) {
+                    _TIFFmemcpy(tv->value, va_arg(ap, void *),
+				tv->count * tv_size);
+		} else {
+		    /*
+		     * XXX: The following loop required to handle
+		     * TIFFTAG_PAGENUMBER, TIFFTAG_HALFTONEHINTS,
+		     * TIFFTAG_YCBCRSUBSAMPLING and TIFFTAG_DOTRANGE tags.
+		     * These tags are actually arrays and should be passed as
+		     * array pointers to TIFFSetField() function, but actually
+		     * passed as a list of separate values. This behaviour
+		     * must be changed in the future!
+		     */
+		    int i;
+		    char *val = (char *)tv->value;
+
+		    for (i = 0; i < tv->count; i++, val += tv_size) {
+			    switch (fip->field_type) {
+				case TIFF_BYTE:
+				case TIFF_UNDEFINED:
+				    {
+					uint8 v = (uint8)va_arg(ap, int);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				case TIFF_SBYTE:
+				    {
+					int8 v = (int8)va_arg(ap, int);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				case TIFF_SHORT:
+				    {
+					uint16 v = (uint16)va_arg(ap, int);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				case TIFF_SSHORT:
+				    {
+					int16 v = (int16)va_arg(ap, int);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				case TIFF_LONG:
+				case TIFF_IFD:
+				    {
+					uint32 v = va_arg(ap, uint32);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				case TIFF_SLONG:
+				    {
+					int32 v = va_arg(ap, int32);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				case TIFF_RATIONAL:
+				case TIFF_SRATIONAL:
+				case TIFF_FLOAT:
+				    {
+					float v = (float)va_arg(ap, double);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				case TIFF_DOUBLE:
+				    {
+					double v = va_arg(ap, double);
+					_TIFFmemcpy(val, &v, tv_size);
+				    }
+				    break;
+				default:
+				    _TIFFmemset(val, 0, tv_size);
+				    status = 0;
+				    break;
+			    }
+		    }
+		}
+	    }
+          }
+	}
+	if (status) {
+		TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit);
+		tif->tif_flags |= TIFF_DIRTYDIRECT;
+	}
+
+end:
+	va_end(ap);
+	return (status);
+badvalue:
+	TIFFErrorExt(tif->tif_clientdata, module, "%s: Bad value %d for \"%s\"",
+		  tif->tif_name, v, _TIFFFieldWithTag(tif, tag)->field_name);
+	va_end(ap);
+	return (0);
+badvalue32:
+	TIFFErrorExt(tif->tif_clientdata, module, "%s: Bad value %ld for \"%s\"",
+		   tif->tif_name, v32, _TIFFFieldWithTag(tif, tag)->field_name);
+	va_end(ap);
+	return (0);
+}
+
+/*
+ * Return 1/0 according to whether or not
+ * it is permissible to set the tag's value.
+ * Note that we allow ImageLength to be changed
+ * so that we can append and extend to images.
+ * Any other tag may not be altered once writing
+ * has commenced, unless its value has no effect
+ * on the format of the data that is written.
+ */
+static int
+OkToChangeTag(TIFF* tif, ttag_t tag)
+{
+	const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
+	if (!fip) {			/* unknown tag */
+		TIFFErrorExt(tif->tif_clientdata, "TIFFSetField", "%s: Unknown %stag %u",
+		    tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", tag);
+		return (0);
+	}
+	if (tag != TIFFTAG_IMAGELENGTH && (tif->tif_flags & TIFF_BEENWRITING) &&
+	    !fip->field_oktochange) {
+		/*
+		 * Consult info table to see if tag can be changed
+		 * after we've started writing.  We only allow changes
+		 * to those tags that don't/shouldn't affect the
+		 * compression and/or format of the data.
+		 */
+		TIFFErrorExt(tif->tif_clientdata, "TIFFSetField",
+		    "%s: Cannot modify tag \"%s\" while writing",
+		    tif->tif_name, fip->field_name);
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * Record the value of a field in the
+ * internal directory structure.  The
+ * field will be written to the file
+ * when/if the directory structure is
+ * updated.
+ */
+int
+TIFFSetField(TIFF* tif, ttag_t tag, ...)
+{
+	va_list ap;
+	int status;
+
+	va_start(ap, tag);
+	status = TIFFVSetField(tif, tag, ap);
+	va_end(ap);
+	return (status);
+}
+
+/*
+ * Like TIFFSetField, but taking a varargs
+ * parameter list.  This routine is useful
+ * for building higher-level interfaces on
+ * top of the library.
+ */
+int
+TIFFVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	return OkToChangeTag(tif, tag) ?
+	    (*tif->tif_tagmethods.vsetfield)(tif, tag, ap) : 0;
+}
+
+static int
+_TIFFVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+    TIFFDirectory* td = &tif->tif_dir;
+    int            ret_val = 1;
+
+    switch (tag) {
+	case TIFFTAG_SUBFILETYPE:
+            *va_arg(ap, uint32*) = td->td_subfiletype;
+            break;
+	case TIFFTAG_IMAGEWIDTH:
+            *va_arg(ap, uint32*) = td->td_imagewidth;
+            break;
+	case TIFFTAG_IMAGELENGTH:
+            *va_arg(ap, uint32*) = td->td_imagelength;
+            break;
+	case TIFFTAG_BITSPERSAMPLE:
+            *va_arg(ap, uint16*) = td->td_bitspersample;
+            break;
+	case TIFFTAG_COMPRESSION:
+            *va_arg(ap, uint16*) = td->td_compression;
+            break;
+	case TIFFTAG_PHOTOMETRIC:
+            *va_arg(ap, uint16*) = td->td_photometric;
+            break;
+	case TIFFTAG_THRESHHOLDING:
+            *va_arg(ap, uint16*) = td->td_threshholding;
+            break;
+	case TIFFTAG_FILLORDER:
+            *va_arg(ap, uint16*) = td->td_fillorder;
+            break;
+	case TIFFTAG_ORIENTATION:
+            *va_arg(ap, uint16*) = td->td_orientation;
+            break;
+	case TIFFTAG_SAMPLESPERPIXEL:
+            *va_arg(ap, uint16*) = td->td_samplesperpixel;
+            break;
+	case TIFFTAG_ROWSPERSTRIP:
+            *va_arg(ap, uint32*) = td->td_rowsperstrip;
+            break;
+	case TIFFTAG_MINSAMPLEVALUE:
+            *va_arg(ap, uint16*) = td->td_minsamplevalue;
+            break;
+	case TIFFTAG_MAXSAMPLEVALUE:
+            *va_arg(ap, uint16*) = td->td_maxsamplevalue;
+            break;
+	case TIFFTAG_SMINSAMPLEVALUE:
+            *va_arg(ap, double*) = td->td_sminsamplevalue;
+            break;
+	case TIFFTAG_SMAXSAMPLEVALUE:
+            *va_arg(ap, double*) = td->td_smaxsamplevalue;
+            break;
+	case TIFFTAG_XRESOLUTION:
+            *va_arg(ap, float*) = td->td_xresolution;
+            break;
+	case TIFFTAG_YRESOLUTION:
+            *va_arg(ap, float*) = td->td_yresolution;
+            break;
+	case TIFFTAG_PLANARCONFIG:
+            *va_arg(ap, uint16*) = td->td_planarconfig;
+            break;
+	case TIFFTAG_XPOSITION:
+            *va_arg(ap, float*) = td->td_xposition;
+            break;
+	case TIFFTAG_YPOSITION:
+            *va_arg(ap, float*) = td->td_yposition;
+            break;
+	case TIFFTAG_RESOLUTIONUNIT:
+            *va_arg(ap, uint16*) = td->td_resolutionunit;
+            break;
+	case TIFFTAG_PAGENUMBER:
+            *va_arg(ap, uint16*) = td->td_pagenumber[0];
+            *va_arg(ap, uint16*) = td->td_pagenumber[1];
+            break;
+	case TIFFTAG_HALFTONEHINTS:
+            *va_arg(ap, uint16*) = td->td_halftonehints[0];
+            *va_arg(ap, uint16*) = td->td_halftonehints[1];
+            break;
+	case TIFFTAG_COLORMAP:
+            *va_arg(ap, uint16**) = td->td_colormap[0];
+            *va_arg(ap, uint16**) = td->td_colormap[1];
+            *va_arg(ap, uint16**) = td->td_colormap[2];
+            break;
+	case TIFFTAG_STRIPOFFSETS:
+	case TIFFTAG_TILEOFFSETS:
+            *va_arg(ap, uint32**) = td->td_stripoffset;
+            break;
+	case TIFFTAG_STRIPBYTECOUNTS:
+	case TIFFTAG_TILEBYTECOUNTS:
+            *va_arg(ap, uint32**) = td->td_stripbytecount;
+            break;
+	case TIFFTAG_MATTEING:
+            *va_arg(ap, uint16*) =
+                (td->td_extrasamples == 1 &&
+                 td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
+            break;
+	case TIFFTAG_EXTRASAMPLES:
+            *va_arg(ap, uint16*) = td->td_extrasamples;
+            *va_arg(ap, uint16**) = td->td_sampleinfo;
+            break;
+	case TIFFTAG_TILEWIDTH:
+            *va_arg(ap, uint32*) = td->td_tilewidth;
+            break;
+	case TIFFTAG_TILELENGTH:
+            *va_arg(ap, uint32*) = td->td_tilelength;
+            break;
+	case TIFFTAG_TILEDEPTH:
+            *va_arg(ap, uint32*) = td->td_tiledepth;
+            break;
+	case TIFFTAG_DATATYPE:
+            switch (td->td_sampleformat) {
+		case SAMPLEFORMAT_UINT:
+                    *va_arg(ap, uint16*) = DATATYPE_UINT;
+                    break;
+		case SAMPLEFORMAT_INT:
+                    *va_arg(ap, uint16*) = DATATYPE_INT;
+                    break;
+		case SAMPLEFORMAT_IEEEFP:
+                    *va_arg(ap, uint16*) = DATATYPE_IEEEFP;
+                    break;
+		case SAMPLEFORMAT_VOID:
+                    *va_arg(ap, uint16*) = DATATYPE_VOID;
+                    break;
+            }
+            break;
+	case TIFFTAG_SAMPLEFORMAT:
+            *va_arg(ap, uint16*) = td->td_sampleformat;
+            break;
+	case TIFFTAG_IMAGEDEPTH:
+            *va_arg(ap, uint32*) = td->td_imagedepth;
+            break;
+	case TIFFTAG_SUBIFD:
+            *va_arg(ap, uint16*) = td->td_nsubifd;
+            *va_arg(ap, uint32**) = td->td_subifd;
+            break;
+	case TIFFTAG_YCBCRPOSITIONING:
+            *va_arg(ap, uint16*) = td->td_ycbcrpositioning;
+            break;
+	case TIFFTAG_YCBCRSUBSAMPLING:
+            *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[0];
+            *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[1];
+            break;
+	case TIFFTAG_TRANSFERFUNCTION:
+            *va_arg(ap, uint16**) = td->td_transferfunction[0];
+            if (td->td_samplesperpixel - td->td_extrasamples > 1) {
+                *va_arg(ap, uint16**) = td->td_transferfunction[1];
+                *va_arg(ap, uint16**) = td->td_transferfunction[2];
+            }
+            break;
+	case TIFFTAG_INKNAMES:
+            *va_arg(ap, char**) = td->td_inknames;
+            break;
+        default:
+        {
+            const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
+            int           i;
+            
+            /*
+             * This can happen if multiple images are open with
+             * different codecs which have private tags.  The
+             * global tag information table may then have tags
+             * that are valid for one file but not the other. 
+             * If the client tries to get a tag that is not valid
+             * for the image's codec then we'll arrive here.
+             */
+            if( fip == NULL || fip->field_bit != FIELD_CUSTOM )
+            {
+				TIFFErrorExt(tif->tif_clientdata, "_TIFFVGetField",
+                          "%s: Invalid %stag \"%s\" (not supported by codec)",
+                          tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "",
+                          _TIFFFieldWithTag(tif, tag)->field_name);
+                ret_val = 0;
+                break;
+            }
+
+            /*
+	     * Do we have a custom value?
+	     */
+            ret_val = 0;
+            for (i = 0; i < td->td_customValueCount; i++) {
+		TIFFTagValue *tv = td->td_customValues + i;
+
+		if (tv->info->field_tag != tag)
+			continue;
+                
+		if (fip->field_passcount) {
+			if (fip->field_readcount == TIFF_VARIABLE2) 
+				*va_arg(ap, uint32*) = (uint32)tv->count;
+			else	/* Assume TIFF_VARIABLE */
+				*va_arg(ap, uint16*) = (uint16)tv->count;
+			*va_arg(ap, void **) = tv->value;
+			ret_val = 1;
+                } else {
+			if ((fip->field_type == TIFF_ASCII
+			    || fip->field_readcount == TIFF_VARIABLE
+			    || fip->field_readcount == TIFF_VARIABLE2
+			    || fip->field_readcount == TIFF_SPP
+			    || tv->count > 1)
+			    && fip->field_tag != TIFFTAG_PAGENUMBER
+			    && fip->field_tag != TIFFTAG_HALFTONEHINTS
+			    && fip->field_tag != TIFFTAG_YCBCRSUBSAMPLING
+			    && fip->field_tag != TIFFTAG_DOTRANGE) {
+				*va_arg(ap, void **) = tv->value;
+				ret_val = 1;
+			} else {
+			    int j;
+			    char *val = (char *)tv->value;
+
+			    for (j = 0; j < tv->count;
+				 j++, val += _TIFFDataSize(tv->info->field_type)) {
+				switch (fip->field_type) {
+					case TIFF_BYTE:
+					case TIFF_UNDEFINED:
+						*va_arg(ap, uint8*) =
+							*(uint8 *)val;
+						ret_val = 1;
+						break;
+					case TIFF_SBYTE:
+						*va_arg(ap, int8*) =
+							*(int8 *)val;
+						ret_val = 1;
+						break;
+					case TIFF_SHORT:
+						*va_arg(ap, uint16*) =
+							*(uint16 *)val;
+						ret_val = 1;
+						break;
+					case TIFF_SSHORT:
+						*va_arg(ap, int16*) =
+							*(int16 *)val;
+						ret_val = 1;
+						break;
+					case TIFF_LONG:
+					case TIFF_IFD:
+						*va_arg(ap, uint32*) =
+							*(uint32 *)val;
+						ret_val = 1;
+						break;
+					case TIFF_SLONG:
+						*va_arg(ap, int32*) =
+							*(int32 *)val;
+						ret_val = 1;
+						break;
+					case TIFF_RATIONAL:
+					case TIFF_SRATIONAL:
+					case TIFF_FLOAT:
+						*va_arg(ap, float*) =
+							*(float *)val;
+						ret_val = 1;
+						break;
+					case TIFF_DOUBLE:
+						*va_arg(ap, double*) =
+							*(double *)val;
+						ret_val = 1;
+						break;
+					default:
+						ret_val = 0;
+						break;
+				}
+			    }
+			}
+                }
+		break;
+            }
+        }
+    }
+    return(ret_val);
+}
+
+/*
+ * Return the value of a field in the
+ * internal directory structure.
+ */
+int
+TIFFGetField(TIFF* tif, ttag_t tag, ...)
+{
+	int status;
+	va_list ap;
+
+	va_start(ap, tag);
+	status = TIFFVGetField(tif, tag, ap);
+	va_end(ap);
+	return (status);
+}
+
+/*
+ * Like TIFFGetField, but taking a varargs
+ * parameter list.  This routine is useful
+ * for building higher-level interfaces on
+ * top of the library.
+ */
+int
+TIFFVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
+	return (fip && (isPseudoTag(tag) || TIFFFieldSet(tif, fip->field_bit)) ?
+	    (*tif->tif_tagmethods.vgetfield)(tif, tag, ap) : 0);
+}
+
+#define	CleanupField(member) {		\
+    if (td->member) {			\
+	_TIFFfree(td->member);		\
+	td->member = 0;			\
+    }					\
+}
+
+/*
+ * Release storage associated with a directory.
+ */
+void
+TIFFFreeDirectory(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	int            i;
+
+	_TIFFmemset(td->td_fieldsset, 0, FIELD_SETLONGS);
+	CleanupField(td_colormap[0]);
+	CleanupField(td_colormap[1]);
+	CleanupField(td_colormap[2]);
+	CleanupField(td_sampleinfo);
+	CleanupField(td_subifd);
+	CleanupField(td_inknames);
+	CleanupField(td_transferfunction[0]);
+	CleanupField(td_transferfunction[1]);
+	CleanupField(td_transferfunction[2]);
+	CleanupField(td_stripoffset);
+	CleanupField(td_stripbytecount);
+	TIFFClrFieldBit(tif, FIELD_YCBCRSUBSAMPLING);
+	TIFFClrFieldBit(tif, FIELD_YCBCRPOSITIONING);
+
+	/* Cleanup custom tag values */
+	for( i = 0; i < td->td_customValueCount; i++ ) {
+		if (td->td_customValues[i].value)
+			_TIFFfree(td->td_customValues[i].value);
+	}
+
+	td->td_customValueCount = 0;
+	CleanupField(td_customValues);
+}
+#undef CleanupField
+
+/*
+ * Client Tag extension support (from Niles Ritter).
+ */
+static TIFFExtendProc _TIFFextender = (TIFFExtendProc) NULL;
+
+TIFFExtendProc
+TIFFSetTagExtender(TIFFExtendProc extender)
+{
+	TIFFExtendProc prev = _TIFFextender;
+	_TIFFextender = extender;
+	return (prev);
+}
+
+/*
+ * Setup for a new directory.  Should we automatically call
+ * TIFFWriteDirectory() if the current one is dirty?
+ *
+ * The newly created directory will not exist on the file till
+ * TIFFWriteDirectory(), TIFFFlush() or TIFFClose() is called.
+ */
+int
+TIFFCreateDirectory(TIFF* tif)
+{
+    TIFFDefaultDirectory(tif);
+    tif->tif_diroff = 0;
+    tif->tif_nextdiroff = 0;
+    tif->tif_curoff = 0;
+    tif->tif_row = (uint32) -1;
+    tif->tif_curstrip = (tstrip_t) -1;
+
+    return 0;
+}
+
+/*
+ * Setup a default directory structure.
+ */
+int
+TIFFDefaultDirectory(TIFF* tif)
+{
+	register TIFFDirectory* td = &tif->tif_dir;
+
+	size_t tiffFieldInfoCount;
+	const TIFFFieldInfo *tiffFieldInfo =
+		_TIFFGetFieldInfo(&tiffFieldInfoCount);
+	_TIFFSetupFieldInfo(tif, tiffFieldInfo, tiffFieldInfoCount);
+
+	_TIFFmemset(td, 0, sizeof (*td));
+	td->td_fillorder = FILLORDER_MSB2LSB;
+	td->td_bitspersample = 1;
+	td->td_threshholding = THRESHHOLD_BILEVEL;
+	td->td_orientation = ORIENTATION_TOPLEFT;
+	td->td_samplesperpixel = 1;
+	td->td_rowsperstrip = (uint32) -1;
+	td->td_tilewidth = 0;
+	td->td_tilelength = 0;
+	td->td_tiledepth = 1;
+	td->td_stripbytecountsorted = 1; /* Our own arrays always sorted. */
+	td->td_resolutionunit = RESUNIT_INCH;
+	td->td_sampleformat = SAMPLEFORMAT_UINT;
+	td->td_imagedepth = 1;
+	td->td_ycbcrsubsampling[0] = 2;
+	td->td_ycbcrsubsampling[1] = 2;
+	td->td_ycbcrpositioning = YCBCRPOSITION_CENTERED;
+	tif->tif_postdecode = _TIFFNoPostDecode;
+        tif->tif_foundfield = NULL;
+	tif->tif_tagmethods.vsetfield = _TIFFVSetField;
+	tif->tif_tagmethods.vgetfield = _TIFFVGetField;
+	tif->tif_tagmethods.printdir = NULL;
+	/*
+	 *  Give client code a chance to install their own
+	 *  tag extensions & methods, prior to compression overloads.
+	 */
+	if (_TIFFextender)
+		(*_TIFFextender)(tif);
+	(void) TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
+	/*
+	 * NB: The directory is marked dirty as a result of setting
+	 * up the default compression scheme.  However, this really
+	 * isn't correct -- we want TIFF_DIRTYDIRECT to be set only
+	 * if the user does something.  We could just do the setup
+	 * by hand, but it seems better to use the normal mechanism
+	 * (i.e. TIFFSetField).
+	 */
+	tif->tif_flags &= ~TIFF_DIRTYDIRECT;
+
+        /*
+         * As per http://bugzilla.remotesensing.org/show_bug.cgi?id=19
+         * we clear the ISTILED flag when setting up a new directory.
+         * Should we also be clearing stuff like INSUBIFD?
+         */
+        tif->tif_flags &= ~TIFF_ISTILED;
+
+	return (1);
+}
+
+static int
+TIFFAdvanceDirectory(TIFF* tif, uint32* nextdir, toff_t* off)
+{
+    static const char module[] = "TIFFAdvanceDirectory";
+    uint16 dircount;
+    if (isMapped(tif))
+    {
+        toff_t poff=*nextdir;
+        if (poff+sizeof(uint16) > tif->tif_size)
+        {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count",
+                      tif->tif_name);
+            return (0);
+        }
+        _TIFFmemcpy(&dircount, tif->tif_base+poff, sizeof (uint16));
+        if (tif->tif_flags & TIFF_SWAB)
+            TIFFSwabShort(&dircount);
+        poff+=sizeof (uint16)+dircount*sizeof (TIFFDirEntry);
+        if (off != NULL)
+            *off = poff;
+        if (((toff_t) (poff+sizeof (uint32))) > tif->tif_size)
+        {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link",
+                      tif->tif_name);
+            return (0);
+        }
+        _TIFFmemcpy(nextdir, tif->tif_base+poff, sizeof (uint32));
+        if (tif->tif_flags & TIFF_SWAB)
+            TIFFSwabLong(nextdir);
+        return (1);
+    }
+    else
+    {
+        if (!SeekOK(tif, *nextdir) ||
+            !ReadOK(tif, &dircount, sizeof (uint16))) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count",
+                      tif->tif_name);
+            return (0);
+        }
+        if (tif->tif_flags & TIFF_SWAB)
+            TIFFSwabShort(&dircount);
+        if (off != NULL)
+            *off = TIFFSeekFile(tif,
+                                dircount*sizeof (TIFFDirEntry), SEEK_CUR);
+        else
+            (void) TIFFSeekFile(tif,
+                                dircount*sizeof (TIFFDirEntry), SEEK_CUR);
+        if (!ReadOK(tif, nextdir, sizeof (uint32))) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link",
+                      tif->tif_name);
+            return (0);
+        }
+        if (tif->tif_flags & TIFF_SWAB)
+            TIFFSwabLong(nextdir);
+        return (1);
+    }
+}
+
+/*
+ * Count the number of directories in a file.
+ */
+tdir_t
+TIFFNumberOfDirectories(TIFF* tif)
+{
+    toff_t nextdir = tif->tif_header.tiff_diroff;
+    tdir_t n = 0;
+    
+    while (nextdir != 0 && TIFFAdvanceDirectory(tif, &nextdir, NULL))
+        n++;
+    return (n);
+}
+
+/*
+ * Set the n-th directory as the current directory.
+ * NB: Directories are numbered starting at 0.
+ */
+int
+TIFFSetDirectory(TIFF* tif, tdir_t dirn)
+{
+	toff_t nextdir;
+	tdir_t n;
+
+	nextdir = tif->tif_header.tiff_diroff;
+	for (n = dirn; n > 0 && nextdir != 0; n--)
+		if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
+			return (0);
+	tif->tif_nextdiroff = nextdir;
+	/*
+	 * Set curdir to the actual directory index.  The
+	 * -1 is because TIFFReadDirectory will increment
+	 * tif_curdir after successfully reading the directory.
+	 */
+	tif->tif_curdir = (dirn - n) - 1;
+	/*
+	 * Reset tif_dirnumber counter and start new list of seen directories.
+	 * We need this to prevent IFD loops.
+	 */
+	tif->tif_dirnumber = 0;
+	return (TIFFReadDirectory(tif));
+}
+
+/*
+ * Set the current directory to be the directory
+ * located at the specified file offset.  This interface
+ * is used mainly to access directories linked with
+ * the SubIFD tag (e.g. thumbnail images).
+ */
+int
+TIFFSetSubDirectory(TIFF* tif, uint32 diroff)
+{
+	tif->tif_nextdiroff = diroff;
+	/*
+	 * Reset tif_dirnumber counter and start new list of seen directories.
+	 * We need this to prevent IFD loops.
+	 */
+	tif->tif_dirnumber = 0;
+	return (TIFFReadDirectory(tif));
+}
+
+/*
+ * Return file offset of the current directory.
+ */
+uint32
+TIFFCurrentDirOffset(TIFF* tif)
+{
+	return (tif->tif_diroff);
+}
+
+/*
+ * Return an indication of whether or not we are
+ * at the last directory in the file.
+ */
+int
+TIFFLastDirectory(TIFF* tif)
+{
+	return (tif->tif_nextdiroff == 0);
+}
+
+/*
+ * Unlink the specified directory from the directory chain.
+ */
+int
+TIFFUnlinkDirectory(TIFF* tif, tdir_t dirn)
+{
+	static const char module[] = "TIFFUnlinkDirectory";
+	toff_t nextdir;
+	toff_t off;
+	tdir_t n;
+
+	if (tif->tif_mode == O_RDONLY) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+                             "Can not unlink directory in read-only file");
+		return (0);
+	}
+	/*
+	 * Go to the directory before the one we want
+	 * to unlink and nab the offset of the link
+	 * field we'll need to patch.
+	 */
+	nextdir = tif->tif_header.tiff_diroff;
+	off = sizeof (uint16) + sizeof (uint16);
+	for (n = dirn-1; n > 0; n--) {
+		if (nextdir == 0) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Directory %d does not exist", dirn);
+			return (0);
+		}
+		if (!TIFFAdvanceDirectory(tif, &nextdir, &off))
+			return (0);
+	}
+	/*
+	 * Advance to the directory to be unlinked and fetch
+	 * the offset of the directory that follows.
+	 */
+	if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
+		return (0);
+	/*
+	 * Go back and patch the link field of the preceding
+	 * directory to point to the offset of the directory
+	 * that follows.
+	 */
+	(void) TIFFSeekFile(tif, off, SEEK_SET);
+	if (tif->tif_flags & TIFF_SWAB)
+		TIFFSwabLong(&nextdir);
+	if (!WriteOK(tif, &nextdir, sizeof (uint32))) {
+		TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
+		return (0);
+	}
+	/*
+	 * Leave directory state setup safely.  We don't have
+	 * facilities for doing inserting and removing directories,
+	 * so it's safest to just invalidate everything.  This
+	 * means that the caller can only append to the directory
+	 * chain.
+	 */
+	(*tif->tif_cleanup)(tif);
+	if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
+		_TIFFfree(tif->tif_rawdata);
+		tif->tif_rawdata = NULL;
+		tif->tif_rawcc = 0;
+	}
+	tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP|TIFF_POSTENCODE);
+	TIFFFreeDirectory(tif);
+	TIFFDefaultDirectory(tif);
+	tif->tif_diroff = 0;			/* force link on next write */
+	tif->tif_nextdiroff = 0;		/* next write must be at end */
+	tif->tif_curoff = 0;
+	tif->tif_row = (uint32) -1;
+	tif->tif_curstrip = (tstrip_t) -1;
+	return (1);
+}
+
+/*			[BFC]
+ *
+ * Author: Bruce Cameron <cameron@petris.com>
+ *
+ * Set a table of tags that are to be replaced during directory process by the
+ * 'IGNORE' state - or return TRUE/FALSE for the requested tag such that
+ * 'ReadDirectory' can use the stored information.
+ *
+ * FIXME: this is never used properly. Should be removed in the future.
+ */
+int
+TIFFReassignTagToIgnore (enum TIFFIgnoreSense task, int TIFFtagID)
+{
+    static int TIFFignoretags [FIELD_LAST];
+    static int tagcount = 0 ;
+    int		i;					/* Loop index */
+    int		j;					/* Loop index */
+
+    switch (task)
+    {
+      case TIS_STORE:
+        if ( tagcount < (FIELD_LAST - 1) )
+        {
+            for ( j = 0 ; j < tagcount ; ++j )
+            {					/* Do not add duplicate tag */
+                if ( TIFFignoretags [j] == TIFFtagID )
+                    return (TRUE) ;
+            }
+            TIFFignoretags [tagcount++] = TIFFtagID ;
+            return (TRUE) ;
+        }
+        break ;
+        
+      case TIS_EXTRACT:
+        for ( i = 0 ; i < tagcount ; ++i )
+        {
+            if ( TIFFignoretags [i] == TIFFtagID )
+                return (TRUE) ;
+        }
+        break;
+        
+      case TIS_EMPTY:
+        tagcount = 0 ;			/* Clear the list */
+        return (TRUE) ;
+        
+      default:
+        break;
+    }
+    
+    return (FALSE);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_dir.h b/src/libtiff/tif_dir.h
new file mode 100644
index 0000000..039a9cc
--- /dev/null
+++ b/src/libtiff/tif_dir.h
@@ -0,0 +1,199 @@
+/* $Id: tif_dir.h,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFDIR_
+#define	_TIFFDIR_
+/*
+ * ``Library-private'' Directory-related Definitions.
+ */
+
+/*
+ * Internal format of a TIFF directory entry.
+ */
+typedef	struct {
+#define	FIELD_SETLONGS	4
+	/* bit vector of fields that are set */
+	unsigned long	td_fieldsset[FIELD_SETLONGS];
+
+	uint32	td_imagewidth, td_imagelength, td_imagedepth;
+	uint32	td_tilewidth, td_tilelength, td_tiledepth;
+	uint32	td_subfiletype;
+	uint16	td_bitspersample;
+	uint16	td_sampleformat;
+	uint16	td_compression;
+	uint16	td_photometric;
+	uint16	td_threshholding;
+	uint16	td_fillorder;
+	uint16	td_orientation;
+	uint16	td_samplesperpixel;
+	uint32	td_rowsperstrip;
+	uint16	td_minsamplevalue, td_maxsamplevalue;
+	double	td_sminsamplevalue, td_smaxsamplevalue;
+	float	td_xresolution, td_yresolution;
+	uint16	td_resolutionunit;
+	uint16	td_planarconfig;
+	float	td_xposition, td_yposition;
+	uint16	td_pagenumber[2];
+	uint16*	td_colormap[3];
+	uint16	td_halftonehints[2];
+	uint16	td_extrasamples;
+	uint16*	td_sampleinfo;
+	tstrip_t td_stripsperimage;
+	tstrip_t td_nstrips;		/* size of offset & bytecount arrays */
+	uint32*	td_stripoffset;
+	uint32*	td_stripbytecount;
+	int	td_stripbytecountsorted; /* is the bytecount array sorted ascending? */
+	uint16	td_nsubifd;
+	uint32*	td_subifd;
+	/* YCbCr parameters */
+	uint16	td_ycbcrsubsampling[2];
+	uint16	td_ycbcrpositioning;
+	/* Colorimetry parameters */
+	uint16*	td_transferfunction[3];
+	/* CMYK parameters */
+	int	td_inknameslen;
+	char*	td_inknames;
+
+	int     td_customValueCount;
+        TIFFTagValue *td_customValues;
+} TIFFDirectory;
+
+/*
+ * Field flags used to indicate fields that have
+ * been set in a directory, and to reference fields
+ * when manipulating a directory.
+ */
+
+/*
+ * FIELD_IGNORE is used to signify tags that are to
+ * be processed but otherwise ignored.  This permits
+ * antiquated tags to be quietly read and discarded.
+ * Note that a bit *is* allocated for ignored tags;
+ * this is understood by the directory reading logic
+ * which uses this fact to avoid special-case handling
+ */ 
+#define	FIELD_IGNORE			0
+
+/* multi-item fields */
+#define	FIELD_IMAGEDIMENSIONS		1
+#define FIELD_TILEDIMENSIONS		2
+#define	FIELD_RESOLUTION		3
+#define	FIELD_POSITION			4
+
+/* single-item fields */
+#define	FIELD_SUBFILETYPE		5
+#define	FIELD_BITSPERSAMPLE		6
+#define	FIELD_COMPRESSION		7
+#define	FIELD_PHOTOMETRIC		8
+#define	FIELD_THRESHHOLDING		9
+#define	FIELD_FILLORDER			10
+#define	FIELD_ORIENTATION		15
+#define	FIELD_SAMPLESPERPIXEL		16
+#define	FIELD_ROWSPERSTRIP		17
+#define	FIELD_MINSAMPLEVALUE		18
+#define	FIELD_MAXSAMPLEVALUE		19
+#define	FIELD_PLANARCONFIG		20
+#define	FIELD_RESOLUTIONUNIT		22
+#define	FIELD_PAGENUMBER		23
+#define	FIELD_STRIPBYTECOUNTS		24
+#define	FIELD_STRIPOFFSETS		25
+#define	FIELD_COLORMAP			26
+#define	FIELD_EXTRASAMPLES		31
+#define FIELD_SAMPLEFORMAT		32
+#define	FIELD_SMINSAMPLEVALUE		33
+#define	FIELD_SMAXSAMPLEVALUE		34
+#define FIELD_IMAGEDEPTH		35
+#define FIELD_TILEDEPTH			36
+#define	FIELD_HALFTONEHINTS		37
+#define FIELD_YCBCRSUBSAMPLING		39
+#define FIELD_YCBCRPOSITIONING		40
+#define	FIELD_TRANSFERFUNCTION		44
+#define	FIELD_INKNAMES			46
+#define	FIELD_SUBIFD			49
+/*      FIELD_CUSTOM (see tiffio.h)     65 */
+/* end of support for well-known tags; codec-private tags follow */
+#define	FIELD_CODEC			66	/* base of codec-private tags */
+
+
+/*
+ * Pseudo-tags don't normally need field bits since they
+ * are not written to an output file (by definition).
+ * The library also has express logic to always query a
+ * codec for a pseudo-tag so allocating a field bit for
+ * one is a waste.   If codec wants to promote the notion
+ * of a pseudo-tag being ``set'' or ``unset'' then it can
+ * do using internal state flags without polluting the
+ * field bit space defined for real tags.
+ */
+#define	FIELD_PSEUDO			0
+
+#define	FIELD_LAST			(32*FIELD_SETLONGS-1)
+
+#define	TIFFExtractData(tif, type, v) \
+    ((uint32) ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
+        ((v) >> (tif)->tif_typeshift[type]) & (tif)->tif_typemask[type] : \
+	(v) & (tif)->tif_typemask[type]))
+#define	TIFFInsertData(tif, type, v) \
+    ((uint32) ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
+        ((v) & (tif)->tif_typemask[type]) << (tif)->tif_typeshift[type] : \
+	(v) & (tif)->tif_typemask[type]))
+
+
+#define BITn(n)				(((unsigned long)1L)<<((n)&0x1f)) 
+#define BITFIELDn(tif, n)		((tif)->tif_dir.td_fieldsset[(n)/32]) 
+#define TIFFFieldSet(tif, field)	(BITFIELDn(tif, field) & BITn(field)) 
+#define TIFFSetFieldBit(tif, field)	(BITFIELDn(tif, field) |= BITn(field))
+#define TIFFClrFieldBit(tif, field)	(BITFIELDn(tif, field) &= ~BITn(field))
+
+#define	FieldSet(fields, f)		(fields[(f)/32] & BITn(f))
+#define	ResetFieldBit(fields, f)	(fields[(f)/32] &= ~BITn(f))
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern	const TIFFFieldInfo *_TIFFGetFieldInfo(size_t *);
+extern	const TIFFFieldInfo *_TIFFGetExifFieldInfo(size_t *);
+extern	void _TIFFSetupFieldInfo(TIFF*, const TIFFFieldInfo[], size_t);
+extern	void _TIFFPrintFieldInfo(TIFF*, FILE*);
+extern	TIFFDataType _TIFFSampleToTagType(TIFF*);
+extern  const TIFFFieldInfo* _TIFFFindOrRegisterFieldInfo( TIFF *tif,
+							   ttag_t tag,
+							   TIFFDataType dt );
+extern  TIFFFieldInfo* _TIFFCreateAnonFieldInfo( TIFF *tif, ttag_t tag,
+                                                 TIFFDataType dt );
+
+#define _TIFFMergeFieldInfo	    TIFFMergeFieldInfo
+#define _TIFFFindFieldInfo	    TIFFFindFieldInfo
+#define _TIFFFindFieldInfoByName    TIFFFindFieldInfoByName
+#define _TIFFFieldWithTag	    TIFFFieldWithTag
+#define _TIFFFieldWithName	    TIFFFieldWithName
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFDIR_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_dirinfo.c b/src/libtiff/tif_dirinfo.c
new file mode 100644
index 0000000..0f9020b
--- /dev/null
+++ b/src/libtiff/tif_dirinfo.c
@@ -0,0 +1,846 @@
+/* $Id: tif_dirinfo.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Core Directory Tag Support.
+ */
+#include "tiffiop.h"
+#include <stdlib.h>
+
+/*
+ * NB: NB: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG.
+ *       If a tag can have both LONG and SHORT types then the LONG must be
+ *       placed before the SHORT for writing to work properly.
+ *
+ * NOTE: The second field (field_readcount) and third field (field_writecount)
+ *       sometimes use the values TIFF_VARIABLE (-1), TIFF_VARIABLE2 (-3)
+ *       and TIFFTAG_SPP (-2). The macros should be used but would throw off 
+ *       the formatting of the code, so please interprete the -1, -2 and -3 
+ *       values accordingly.
+ */
+static const TIFFFieldInfo
+tiffFieldInfo[] = {
+    { TIFFTAG_SUBFILETYPE,	 1, 1,	TIFF_LONG,	FIELD_SUBFILETYPE,
+      1,	0,	"SubfileType" },
+/* XXX SHORT for compatibility w/ old versions of the library */
+    { TIFFTAG_SUBFILETYPE,	 1, 1,	TIFF_SHORT,	FIELD_SUBFILETYPE,
+      1,	0,	"SubfileType" },
+    { TIFFTAG_OSUBFILETYPE,	 1, 1,	TIFF_SHORT,	FIELD_SUBFILETYPE,
+      1,	0,	"OldSubfileType" },
+    { TIFFTAG_IMAGEWIDTH,	 1, 1,	TIFF_LONG,	FIELD_IMAGEDIMENSIONS,
+      0,	0,	"ImageWidth" },
+    { TIFFTAG_IMAGEWIDTH,	 1, 1,	TIFF_SHORT,	FIELD_IMAGEDIMENSIONS,
+      0,	0,	"ImageWidth" },
+    { TIFFTAG_IMAGELENGTH,	 1, 1,	TIFF_LONG,	FIELD_IMAGEDIMENSIONS,
+      1,	0,	"ImageLength" },
+    { TIFFTAG_IMAGELENGTH,	 1, 1,	TIFF_SHORT,	FIELD_IMAGEDIMENSIONS,
+      1,	0,	"ImageLength" },
+    { TIFFTAG_BITSPERSAMPLE,	-1,-1,	TIFF_SHORT,	FIELD_BITSPERSAMPLE,
+      0,	0,	"BitsPerSample" },
+/* XXX LONG for compatibility with some broken TIFF writers */
+    { TIFFTAG_BITSPERSAMPLE,	-1,-1,	TIFF_LONG,	FIELD_BITSPERSAMPLE,
+      0,	0,	"BitsPerSample" },
+    { TIFFTAG_COMPRESSION,	-1, 1,	TIFF_SHORT,	FIELD_COMPRESSION,
+      0,	0,	"Compression" },
+/* XXX LONG for compatibility with some broken TIFF writers */
+    { TIFFTAG_COMPRESSION,	-1, 1,	TIFF_LONG,	FIELD_COMPRESSION,
+      0,	0,	"Compression" },
+    { TIFFTAG_PHOTOMETRIC,	 1, 1,	TIFF_SHORT,	FIELD_PHOTOMETRIC,
+      0,	0,	"PhotometricInterpretation" },
+/* XXX LONG for compatibility with some broken TIFF writers */
+    { TIFFTAG_PHOTOMETRIC,	 1, 1,	TIFF_LONG,	FIELD_PHOTOMETRIC,
+      0,	0,	"PhotometricInterpretation" },
+    { TIFFTAG_THRESHHOLDING,	 1, 1,	TIFF_SHORT,	FIELD_THRESHHOLDING,
+      1,	0,	"Threshholding" },
+    { TIFFTAG_CELLWIDTH,	 1, 1,	TIFF_SHORT,	FIELD_IGNORE,
+      1,	0,	"CellWidth" },
+    { TIFFTAG_CELLLENGTH,	 1, 1,	TIFF_SHORT,	FIELD_IGNORE,
+      1,	0,	"CellLength" },
+    { TIFFTAG_FILLORDER,	 1, 1,	TIFF_SHORT,	FIELD_FILLORDER,
+      0,	0,	"FillOrder" },
+    { TIFFTAG_DOCUMENTNAME,	-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"DocumentName" },
+    { TIFFTAG_IMAGEDESCRIPTION,	-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"ImageDescription" },
+    { TIFFTAG_MAKE,		-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"Make" },
+    { TIFFTAG_MODEL,		-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"Model" },
+    { TIFFTAG_STRIPOFFSETS,	-1,-1,	TIFF_LONG,	FIELD_STRIPOFFSETS,
+      0,	0,	"StripOffsets" },
+    { TIFFTAG_STRIPOFFSETS,	-1,-1,	TIFF_SHORT,	FIELD_STRIPOFFSETS,
+      0,	0,	"StripOffsets" },
+    { TIFFTAG_ORIENTATION,	 1, 1,	TIFF_SHORT,	FIELD_ORIENTATION,
+      0,	0,	"Orientation" },
+    { TIFFTAG_SAMPLESPERPIXEL,	 1, 1,	TIFF_SHORT,	FIELD_SAMPLESPERPIXEL,
+      0,	0,	"SamplesPerPixel" },
+    { TIFFTAG_ROWSPERSTRIP,	 1, 1,	TIFF_LONG,	FIELD_ROWSPERSTRIP,
+      0,	0,	"RowsPerStrip" },
+    { TIFFTAG_ROWSPERSTRIP,	 1, 1,	TIFF_SHORT,	FIELD_ROWSPERSTRIP,
+      0,	0,	"RowsPerStrip" },
+    { TIFFTAG_STRIPBYTECOUNTS,	-1,-1,	TIFF_LONG,	FIELD_STRIPBYTECOUNTS,
+      0,	0,	"StripByteCounts" },
+    { TIFFTAG_STRIPBYTECOUNTS,	-1,-1,	TIFF_SHORT,	FIELD_STRIPBYTECOUNTS,
+      0,	0,	"StripByteCounts" },
+    { TIFFTAG_MINSAMPLEVALUE,	-2,-1,	TIFF_SHORT,	FIELD_MINSAMPLEVALUE,
+      1,	0,	"MinSampleValue" },
+    { TIFFTAG_MAXSAMPLEVALUE,	-2,-1,	TIFF_SHORT,	FIELD_MAXSAMPLEVALUE,
+      1,	0,	"MaxSampleValue" },
+    { TIFFTAG_XRESOLUTION,	 1, 1,	TIFF_RATIONAL,	FIELD_RESOLUTION,
+      1,	0,	"XResolution" },
+    { TIFFTAG_YRESOLUTION,	 1, 1,	TIFF_RATIONAL,	FIELD_RESOLUTION,
+      1,	0,	"YResolution" },
+    { TIFFTAG_PLANARCONFIG,	 1, 1,	TIFF_SHORT,	FIELD_PLANARCONFIG,
+      0,	0,	"PlanarConfiguration" },
+    { TIFFTAG_PAGENAME,		-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"PageName" },
+    { TIFFTAG_XPOSITION,	 1, 1,	TIFF_RATIONAL,	FIELD_POSITION,
+      1,	0,	"XPosition" },
+    { TIFFTAG_YPOSITION,	 1, 1,	TIFF_RATIONAL,	FIELD_POSITION,
+      1,	0,	"YPosition" },
+    { TIFFTAG_FREEOFFSETS,	-1,-1,	TIFF_LONG,	FIELD_IGNORE,
+      0,	0,	"FreeOffsets" },
+    { TIFFTAG_FREEBYTECOUNTS,	-1,-1,	TIFF_LONG,	FIELD_IGNORE,
+      0,	0,	"FreeByteCounts" },
+    { TIFFTAG_GRAYRESPONSEUNIT,	 1, 1,	TIFF_SHORT,	FIELD_IGNORE,
+      1,	0,	"GrayResponseUnit" },
+    { TIFFTAG_GRAYRESPONSECURVE,-1,-1,	TIFF_SHORT,	FIELD_IGNORE,
+      1,	0,	"GrayResponseCurve" },
+    { TIFFTAG_RESOLUTIONUNIT,	 1, 1,	TIFF_SHORT,	FIELD_RESOLUTIONUNIT,
+      1,	0,	"ResolutionUnit" },
+    { TIFFTAG_PAGENUMBER,	 2, 2,	TIFF_SHORT,	FIELD_PAGENUMBER,
+      1,	0,	"PageNumber" },
+    { TIFFTAG_COLORRESPONSEUNIT, 1, 1,	TIFF_SHORT,	FIELD_IGNORE,
+      1,	0,	"ColorResponseUnit" },
+    { TIFFTAG_TRANSFERFUNCTION,	-1,-1,	TIFF_SHORT,	FIELD_TRANSFERFUNCTION,
+      1,	0,	"TransferFunction" },
+    { TIFFTAG_SOFTWARE,		-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"Software" },
+    { TIFFTAG_DATETIME,		20,20,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"DateTime" },
+    { TIFFTAG_ARTIST,		-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"Artist" },
+    { TIFFTAG_HOSTCOMPUTER,	-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"HostComputer" },
+    { TIFFTAG_WHITEPOINT,	 2, 2,	TIFF_RATIONAL,	FIELD_CUSTOM,
+      1,	0,	"WhitePoint" },
+    { TIFFTAG_PRIMARYCHROMATICITIES,6,6,TIFF_RATIONAL,	FIELD_CUSTOM,
+      1,	0,	"PrimaryChromaticities" },
+    { TIFFTAG_COLORMAP,		-1,-1,	TIFF_SHORT,	FIELD_COLORMAP,
+      1,	0,	"ColorMap" },
+    { TIFFTAG_HALFTONEHINTS,	 2, 2,	TIFF_SHORT,	FIELD_HALFTONEHINTS,
+      1,	0,	"HalftoneHints" },
+    { TIFFTAG_TILEWIDTH,	 1, 1,	TIFF_LONG,	FIELD_TILEDIMENSIONS,
+      0,	0,	"TileWidth" },
+    { TIFFTAG_TILEWIDTH,	 1, 1,	TIFF_SHORT,	FIELD_TILEDIMENSIONS,
+      0,	0,	"TileWidth" },
+    { TIFFTAG_TILELENGTH,	 1, 1,	TIFF_LONG,	FIELD_TILEDIMENSIONS,
+      0,	0,	"TileLength" },
+    { TIFFTAG_TILELENGTH,	 1, 1,	TIFF_SHORT,	FIELD_TILEDIMENSIONS,
+      0,	0,	"TileLength" },
+    { TIFFTAG_TILEOFFSETS,	-1, 1,	TIFF_LONG,	FIELD_STRIPOFFSETS,
+      0,	0,	"TileOffsets" },
+    { TIFFTAG_TILEBYTECOUNTS,	-1, 1,	TIFF_LONG,	FIELD_STRIPBYTECOUNTS,
+      0,	0,	"TileByteCounts" },
+    { TIFFTAG_TILEBYTECOUNTS,	-1, 1,	TIFF_SHORT,	FIELD_STRIPBYTECOUNTS,
+      0,	0,	"TileByteCounts" },
+    { TIFFTAG_SUBIFD,		-1,-1,	TIFF_IFD,	FIELD_SUBIFD,
+      1,	1,	"SubIFD" },
+    { TIFFTAG_SUBIFD,		-1,-1,	TIFF_LONG,	FIELD_SUBIFD,
+      1,	1,	"SubIFD" },
+    { TIFFTAG_INKSET,		 1, 1,	TIFF_SHORT,	FIELD_CUSTOM,
+      0,	0,	"InkSet" },
+    { TIFFTAG_INKNAMES,		-1,-1,	TIFF_ASCII,	FIELD_INKNAMES,
+      1,	1,	"InkNames" },
+    { TIFFTAG_NUMBEROFINKS,	 1, 1,	TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"NumberOfInks" },
+    { TIFFTAG_DOTRANGE,		 2, 2,	TIFF_SHORT,	FIELD_CUSTOM,
+      0,	0,	"DotRange" },
+    { TIFFTAG_DOTRANGE,		 2, 2,	TIFF_BYTE,	FIELD_CUSTOM,
+      0,	0,	"DotRange" },
+    { TIFFTAG_TARGETPRINTER,	-1,-1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"TargetPrinter" },
+    { TIFFTAG_EXTRASAMPLES,	-1,-1,	TIFF_SHORT,	FIELD_EXTRASAMPLES,
+      0,	1,	"ExtraSamples" },
+/* XXX for bogus Adobe Photoshop v2.5 files */
+    { TIFFTAG_EXTRASAMPLES,	-1,-1,	TIFF_BYTE,	FIELD_EXTRASAMPLES,
+      0,	1,	"ExtraSamples" },
+    { TIFFTAG_SAMPLEFORMAT,	-1,-1,	TIFF_SHORT,	FIELD_SAMPLEFORMAT,
+      0,	0,	"SampleFormat" },
+    { TIFFTAG_SMINSAMPLEVALUE,	-2,-1,	TIFF_ANY,	FIELD_SMINSAMPLEVALUE,
+      1,	0,	"SMinSampleValue" },
+    { TIFFTAG_SMAXSAMPLEVALUE,	-2,-1,	TIFF_ANY,	FIELD_SMAXSAMPLEVALUE,
+      1,	0,	"SMaxSampleValue" },
+    { TIFFTAG_CLIPPATH,		-1, -3, TIFF_BYTE,	FIELD_CUSTOM,
+      0,	1,	"ClipPath" },
+    { TIFFTAG_XCLIPPATHUNITS,	 1, 1,	TIFF_SLONG,	FIELD_CUSTOM,
+      0,	0,	"XClipPathUnits" },
+    { TIFFTAG_XCLIPPATHUNITS,	 1, 1,	TIFF_SSHORT,	FIELD_CUSTOM,
+      0,	0,	"XClipPathUnits" },
+    { TIFFTAG_XCLIPPATHUNITS,	 1, 1,	TIFF_SBYTE,	FIELD_CUSTOM,
+      0,	0,	"XClipPathUnits" },
+    { TIFFTAG_YCLIPPATHUNITS,	 1, 1,	TIFF_SLONG,	FIELD_CUSTOM,
+      0,	0,	"YClipPathUnits" },
+    { TIFFTAG_YCLIPPATHUNITS,	 1, 1,	TIFF_SSHORT,	FIELD_CUSTOM,
+      0,	0,	"YClipPathUnits" },
+    { TIFFTAG_YCLIPPATHUNITS,	 1, 1,	TIFF_SBYTE,	FIELD_CUSTOM,
+      0,	0,	"YClipPathUnits" },
+    { TIFFTAG_YCBCRCOEFFICIENTS, 3, 3,	TIFF_RATIONAL,	FIELD_CUSTOM,
+      0,	0,	"YCbCrCoefficients" },
+    { TIFFTAG_YCBCRSUBSAMPLING,	 2, 2,	TIFF_SHORT,	FIELD_YCBCRSUBSAMPLING,
+      0,	0,	"YCbCrSubsampling" },
+    { TIFFTAG_YCBCRPOSITIONING,	 1, 1,	TIFF_SHORT,	FIELD_YCBCRPOSITIONING,
+      0,	0,	"YCbCrPositioning" },
+    { TIFFTAG_REFERENCEBLACKWHITE, 6, 6, TIFF_RATIONAL,	FIELD_CUSTOM,
+      1,	0,	"ReferenceBlackWhite" },
+/* XXX temporarily accept LONG for backwards compatibility */
+    { TIFFTAG_REFERENCEBLACKWHITE, 6, 6, TIFF_LONG,	FIELD_CUSTOM,
+      1,	0,	"ReferenceBlackWhite" },
+    { TIFFTAG_XMLPACKET,	-3,-3,	TIFF_BYTE,	FIELD_CUSTOM,
+      0,	1,	"XMLPacket" },
+/* begin SGI tags */
+    { TIFFTAG_MATTEING,		 1, 1,	TIFF_SHORT,	FIELD_EXTRASAMPLES,
+      0,	0,	"Matteing" },
+    { TIFFTAG_DATATYPE,		-2,-1,	TIFF_SHORT,	FIELD_SAMPLEFORMAT,
+      0,	0,	"DataType" },
+    { TIFFTAG_IMAGEDEPTH,	 1, 1,	TIFF_LONG,	FIELD_IMAGEDEPTH,
+      0,	0,	"ImageDepth" },
+    { TIFFTAG_IMAGEDEPTH,	 1, 1,	TIFF_SHORT,	FIELD_IMAGEDEPTH,
+      0,	0,	"ImageDepth" },
+    { TIFFTAG_TILEDEPTH,	 1, 1,	TIFF_LONG,	FIELD_TILEDEPTH,
+      0,	0,	"TileDepth" },
+    { TIFFTAG_TILEDEPTH,	 1, 1,	TIFF_SHORT,	FIELD_TILEDEPTH,
+      0,	0,	"TileDepth" },
+/* end SGI tags */
+/* begin Pixar tags */
+    { TIFFTAG_PIXAR_IMAGEFULLWIDTH,  1, 1, TIFF_LONG,	FIELD_CUSTOM,
+      1,	0,	"ImageFullWidth" },
+    { TIFFTAG_PIXAR_IMAGEFULLLENGTH, 1, 1, TIFF_LONG,	FIELD_CUSTOM,
+      1,	0,	"ImageFullLength" },
+    { TIFFTAG_PIXAR_TEXTUREFORMAT,  -1, -1, TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"TextureFormat" },
+    { TIFFTAG_PIXAR_WRAPMODES,	    -1, -1, TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"TextureWrapModes" },
+    { TIFFTAG_PIXAR_FOVCOT,	     1, 1, TIFF_FLOAT,	FIELD_CUSTOM,
+      1,	0,	"FieldOfViewCotangent" },
+    { TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN,	16,16,	TIFF_FLOAT,
+      FIELD_CUSTOM,	1,	0,	"MatrixWorldToScreen" },
+    { TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA,	16,16,	TIFF_FLOAT,
+       FIELD_CUSTOM,	1,	0,	"MatrixWorldToCamera" },
+    { TIFFTAG_COPYRIGHT,	-1, -1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"Copyright" },
+/* end Pixar tags */
+    { TIFFTAG_RICHTIFFIPTC, -3, -3,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,    1,   "RichTIFFIPTC" },
+    { TIFFTAG_PHOTOSHOP,    -3, -3,	TIFF_BYTE,	FIELD_CUSTOM, 
+      0,    1,   "Photoshop" },
+    { TIFFTAG_EXIFIFD,		1, 1,	TIFF_LONG,	FIELD_CUSTOM,
+      0,	0,	"EXIFIFDOffset" },
+    { TIFFTAG_ICCPROFILE,	-3, -3,	TIFF_UNDEFINED,	FIELD_CUSTOM,
+      0,	1,	"ICC Profile" },
+    { TIFFTAG_GPSIFD,		1, 1,	TIFF_LONG,	FIELD_CUSTOM,
+      0,	0,	"GPSIFDOffset" },
+    { TIFFTAG_STONITS,		 1, 1,	TIFF_DOUBLE,	FIELD_CUSTOM,
+      0,	0,	"StoNits" },
+    { TIFFTAG_INTEROPERABILITYIFD, 1, 1, TIFF_LONG,	FIELD_CUSTOM,
+      0,	0,	"InteroperabilityIFDOffset" },
+/* begin DNG tags */
+    { TIFFTAG_DNGVERSION,	4, 4,	TIFF_BYTE,	FIELD_CUSTOM, 
+      0,	0,	"DNGVersion" },
+    { TIFFTAG_DNGBACKWARDVERSION, 4, 4,	TIFF_BYTE,	FIELD_CUSTOM, 
+      0,	0,	"DNGBackwardVersion" },
+    { TIFFTAG_UNIQUECAMERAMODEL,    -1, -1, TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"UniqueCameraModel" },
+    { TIFFTAG_LOCALIZEDCAMERAMODEL, -1, -1, TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"LocalizedCameraModel" },
+    { TIFFTAG_LOCALIZEDCAMERAMODEL, -1, -1, TIFF_BYTE,	FIELD_CUSTOM,
+      1,	1,	"LocalizedCameraModel" },
+    { TIFFTAG_CFAPLANECOLOR,	-1, -1,	TIFF_BYTE,	FIELD_CUSTOM, 
+      0,	1,	"CFAPlaneColor" },
+    { TIFFTAG_CFALAYOUT,	1, 1,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"CFALayout" },
+    { TIFFTAG_LINEARIZATIONTABLE, -1, -1, TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	1,	"LinearizationTable" },
+    { TIFFTAG_BLACKLEVELREPEATDIM, 2, 2, TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"BlackLevelRepeatDim" },
+    { TIFFTAG_BLACKLEVEL,	-1, -1,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,	1,	"BlackLevel" },
+    { TIFFTAG_BLACKLEVEL,	-1, -1,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	1,	"BlackLevel" },
+    { TIFFTAG_BLACKLEVEL,	-1, -1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"BlackLevel" },
+    { TIFFTAG_BLACKLEVELDELTAH,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"BlackLevelDeltaH" },
+    { TIFFTAG_BLACKLEVELDELTAV,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"BlackLevelDeltaV" },
+    { TIFFTAG_WHITELEVEL,	-2, -2,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,	0,	"WhiteLevel" },
+    { TIFFTAG_WHITELEVEL,	-2, -2,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"WhiteLevel" },
+    { TIFFTAG_DEFAULTSCALE,	2, 2,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"DefaultScale" },
+    { TIFFTAG_BESTQUALITYSCALE,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"BestQualityScale" },
+    { TIFFTAG_DEFAULTCROPORIGIN,	2, 2,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,	0,	"DefaultCropOrigin" },
+    { TIFFTAG_DEFAULTCROPORIGIN,	2, 2,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"DefaultCropOrigin" },
+    { TIFFTAG_DEFAULTCROPORIGIN,	2, 2,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"DefaultCropOrigin" },
+    { TIFFTAG_DEFAULTCROPSIZE,	2, 2,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,	0,	"DefaultCropSize" },
+    { TIFFTAG_DEFAULTCROPSIZE,	2, 2,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"DefaultCropSize" },
+    { TIFFTAG_DEFAULTCROPSIZE,	2, 2,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"DefaultCropSize" },
+    { TIFFTAG_COLORMATRIX1,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"ColorMatrix1" },
+    { TIFFTAG_COLORMATRIX2,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"ColorMatrix2" },
+    { TIFFTAG_CAMERACALIBRATION1,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"CameraCalibration1" },
+    { TIFFTAG_CAMERACALIBRATION2,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"CameraCalibration2" },
+    { TIFFTAG_REDUCTIONMATRIX1,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"ReductionMatrix1" },
+    { TIFFTAG_REDUCTIONMATRIX2,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"ReductionMatrix2" },
+    { TIFFTAG_ANALOGBALANCE,	-1, -1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"AnalogBalance" },
+    { TIFFTAG_ASSHOTNEUTRAL,	-1, -1,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	1,	"AsShotNeutral" },
+    { TIFFTAG_ASSHOTNEUTRAL,	-1, -1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"AsShotNeutral" },
+    { TIFFTAG_ASSHOTWHITEXY,	2, 2,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"AsShotWhiteXY" },
+    { TIFFTAG_BASELINEEXPOSURE,	1, 1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"BaselineExposure" },
+    { TIFFTAG_BASELINENOISE,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"BaselineNoise" },
+    { TIFFTAG_BASELINESHARPNESS,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"BaselineSharpness" },
+    { TIFFTAG_BAYERGREENSPLIT,	1, 1,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,	0,	"BayerGreenSplit" },
+    { TIFFTAG_LINEARRESPONSELIMIT,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"LinearResponseLimit" },
+    { TIFFTAG_CAMERASERIALNUMBER,    -1, -1, TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"CameraSerialNumber" },
+    { TIFFTAG_LENSINFO,	4, 4,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"LensInfo" },
+    { TIFFTAG_CHROMABLURRADIUS,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"ChromaBlurRadius" },
+    { TIFFTAG_ANTIALIASSTRENGTH,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"AntiAliasStrength" },
+    { TIFFTAG_SHADOWSCALE,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      0,	0,	"ShadowScale" },
+    { TIFFTAG_DNGPRIVATEDATA,    -1, -1, TIFF_BYTE,	FIELD_CUSTOM,
+      0,	1,	"DNGPrivateData" },
+    { TIFFTAG_MAKERNOTESAFETY,	1, 1,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"MakerNoteSafety" },
+    { TIFFTAG_CALIBRATIONILLUMINANT1,	1, 1,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"CalibrationIlluminant1" },
+    { TIFFTAG_CALIBRATIONILLUMINANT2,	1, 1,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"CalibrationIlluminant2" },
+    { TIFFTAG_RAWDATAUNIQUEID,	16, 16,	TIFF_BYTE,	FIELD_CUSTOM, 
+      0,	0,	"RawDataUniqueID" },
+    { TIFFTAG_ORIGINALRAWFILENAME,    -1, -1, TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"OriginalRawFileName" },
+    { TIFFTAG_ORIGINALRAWFILENAME,    -1, -1, TIFF_BYTE,	FIELD_CUSTOM,
+      1,	1,	"OriginalRawFileName" },
+    { TIFFTAG_ORIGINALRAWFILEDATA,    -1, -1, TIFF_UNDEFINED,	FIELD_CUSTOM,
+      0,	1,	"OriginalRawFileData" },
+    { TIFFTAG_ACTIVEAREA,	4, 4,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,	0,	"ActiveArea" },
+    { TIFFTAG_ACTIVEAREA,	4, 4,	TIFF_SHORT,	FIELD_CUSTOM, 
+      0,	0,	"ActiveArea" },
+    { TIFFTAG_MASKEDAREAS,	-1, -1,	TIFF_LONG,	FIELD_CUSTOM, 
+      0,	1,	"MaskedAreas" },
+    { TIFFTAG_ASSHOTICCPROFILE,    -1, -1, TIFF_UNDEFINED,	FIELD_CUSTOM,
+      0,	1,	"AsShotICCProfile" },
+    { TIFFTAG_ASSHOTPREPROFILEMATRIX,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"AsShotPreProfileMatrix" },
+    { TIFFTAG_CURRENTICCPROFILE,    -1, -1, TIFF_UNDEFINED,	FIELD_CUSTOM,
+      0,	1,	"CurrentICCProfile" },
+    { TIFFTAG_CURRENTPREPROFILEMATRIX,	-1, -1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      0,	1,	"CurrentPreProfileMatrix" },
+/* end DNG tags */
+};
+
+static const TIFFFieldInfo
+exifFieldInfo[] = {
+    { EXIFTAG_EXPOSURETIME,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"ExposureTime" },
+    { EXIFTAG_FNUMBER,		1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"FNumber" },
+    { EXIFTAG_EXPOSUREPROGRAM,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"ExposureProgram" },
+    { EXIFTAG_SPECTRALSENSITIVITY,    -1, -1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"SpectralSensitivity" },
+    { EXIFTAG_ISOSPEEDRATINGS,  -1, -1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	1,	"ISOSpeedRatings" },
+    { EXIFTAG_OECF,	-1, -1,			TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	1,	"OptoelectricConversionFactor" },
+    { EXIFTAG_EXIFVERSION,	4, 4,		TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	0,	"ExifVersion" },
+    { EXIFTAG_DATETIMEORIGINAL,	20, 20,		TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"DateTimeOriginal" },
+    { EXIFTAG_DATETIMEDIGITIZED, 20, 20,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"DateTimeDigitized" },
+    { EXIFTAG_COMPONENTSCONFIGURATION,	 4, 4,	TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	0,	"ComponentsConfiguration" },
+    { EXIFTAG_COMPRESSEDBITSPERPIXEL,	 1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM,
+      1,	0,	"CompressedBitsPerPixel" },
+    { EXIFTAG_SHUTTERSPEEDVALUE,	1, 1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"ShutterSpeedValue" },
+    { EXIFTAG_APERTUREVALUE,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"ApertureValue" },
+    { EXIFTAG_BRIGHTNESSVALUE,	1, 1,		TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"BrightnessValue" },
+    { EXIFTAG_EXPOSUREBIASVALUE,	1, 1,	TIFF_SRATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"ExposureBiasValue" },
+    { EXIFTAG_MAXAPERTUREVALUE,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"MaxApertureValue" },
+    { EXIFTAG_SUBJECTDISTANCE,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"SubjectDistance" },
+    { EXIFTAG_METERINGMODE,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"MeteringMode" },
+    { EXIFTAG_LIGHTSOURCE,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"LightSource" },
+    { EXIFTAG_FLASH,	1, 1,			TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"Flash" },
+    { EXIFTAG_FOCALLENGTH,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"FocalLength" },
+    { EXIFTAG_SUBJECTAREA,	-1, -1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	1,	"SubjectArea" },
+    { EXIFTAG_MAKERNOTE,	-1, -1,		TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	1,	"MakerNote" },
+    { EXIFTAG_USERCOMMENT,	-1, -1,		TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	1,	"UserComment" },
+    { EXIFTAG_SUBSECTIME,    -1, -1,		TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"SubSecTime" },
+    { EXIFTAG_SUBSECTIMEORIGINAL, -1, -1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"SubSecTimeOriginal" },
+    { EXIFTAG_SUBSECTIMEDIGITIZED,-1, -1,	TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"SubSecTimeDigitized" },
+    { EXIFTAG_FLASHPIXVERSION,	4, 4,		TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	0,	"FlashpixVersion" },
+    { EXIFTAG_PIXELXDIMENSION,	1, 1,		TIFF_LONG,	FIELD_CUSTOM,
+      1,	0,	"PixelXDimension" },
+    { EXIFTAG_PIXELXDIMENSION,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"PixelXDimension" },
+    { EXIFTAG_PIXELYDIMENSION,	1, 1,		TIFF_LONG,	FIELD_CUSTOM,
+      1,	0,	"PixelYDimension" },
+    { EXIFTAG_PIXELYDIMENSION,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"PixelYDimension" },
+    { EXIFTAG_RELATEDSOUNDFILE,	13, 13,		TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"RelatedSoundFile" },
+    { EXIFTAG_FLASHENERGY,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"FlashEnergy" },
+    { EXIFTAG_SPATIALFREQUENCYRESPONSE,	-1, -1,	TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	1,	"SpatialFrequencyResponse" },
+    { EXIFTAG_FOCALPLANEXRESOLUTION,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"FocalPlaneXResolution" },
+    { EXIFTAG_FOCALPLANEYRESOLUTION,	1, 1,	TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"FocalPlaneYResolution" },
+    { EXIFTAG_FOCALPLANERESOLUTIONUNIT,	1, 1,	TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"FocalPlaneResolutionUnit" },
+    { EXIFTAG_SUBJECTLOCATION,	2, 2,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"SubjectLocation" },
+    { EXIFTAG_EXPOSUREINDEX,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"ExposureIndex" },
+    { EXIFTAG_SENSINGMETHOD,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"SensingMethod" },
+    { EXIFTAG_FILESOURCE,	1, 1,		TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	0,	"FileSource" },
+    { EXIFTAG_SCENETYPE,	1, 1,		TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	0,	"SceneType" },
+    { EXIFTAG_CFAPATTERN,	-1, -1,		TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	1,	"CFAPattern" },
+    { EXIFTAG_CUSTOMRENDERED,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"CustomRendered" },
+    { EXIFTAG_EXPOSUREMODE,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"ExposureMode" },
+    { EXIFTAG_WHITEBALANCE,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"WhiteBalance" },
+    { EXIFTAG_DIGITALZOOMRATIO,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"DigitalZoomRatio" },
+    { EXIFTAG_FOCALLENGTHIN35MMFILM, 1, 1,	TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"FocalLengthIn35mmFilm" },
+    { EXIFTAG_SCENECAPTURETYPE,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"SceneCaptureType" },
+    { EXIFTAG_GAINCONTROL,	1, 1,		TIFF_RATIONAL,	FIELD_CUSTOM, 
+      1,	0,	"GainControl" },
+    { EXIFTAG_CONTRAST,		1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"Contrast" },
+    { EXIFTAG_SATURATION,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"Saturation" },
+    { EXIFTAG_SHARPNESS,	1, 1,		TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"Sharpness" },
+    { EXIFTAG_DEVICESETTINGDESCRIPTION,	-1, -1,	TIFF_UNDEFINED,	FIELD_CUSTOM,
+      1,	1,	"DeviceSettingDescription" },
+    { EXIFTAG_SUBJECTDISTANCERANGE, 1, 1,	TIFF_SHORT,	FIELD_CUSTOM,
+      1,	0,	"SubjectDistanceRange" },
+    { EXIFTAG_IMAGEUNIQUEID,	33, 33,		TIFF_ASCII,	FIELD_CUSTOM,
+      1,	0,	"ImageUniqueID" }
+};
+
+const TIFFFieldInfo *
+_TIFFGetFieldInfo(size_t *size)
+{
+	*size = TIFFArrayCount(tiffFieldInfo);
+	return tiffFieldInfo;
+}
+
+const TIFFFieldInfo *
+_TIFFGetExifFieldInfo(size_t *size)
+{
+	*size = TIFFArrayCount(exifFieldInfo);
+	return exifFieldInfo;
+}
+
+void
+_TIFFSetupFieldInfo(TIFF* tif, const TIFFFieldInfo info[], size_t n)
+{
+	if (tif->tif_fieldinfo) {
+		size_t  i;
+
+		for (i = 0; i < tif->tif_nfields; i++) 
+		{
+			TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
+			if (fld->field_bit == FIELD_CUSTOM && 
+				strncmp("Tag ", fld->field_name, 4) == 0) {
+					_TIFFfree(fld->field_name);
+					_TIFFfree(fld);
+				}
+		}   
+      
+		_TIFFfree(tif->tif_fieldinfo);
+		tif->tif_nfields = 0;
+	}
+	_TIFFMergeFieldInfo(tif, info, n);
+}
+
+static int
+tagCompare(const void* a, const void* b)
+{
+	const TIFFFieldInfo* ta = *(const TIFFFieldInfo**) a;
+	const TIFFFieldInfo* tb = *(const TIFFFieldInfo**) b;
+	/* NB: be careful of return values for 16-bit platforms */
+	if (ta->field_tag != tb->field_tag)
+		return (ta->field_tag < tb->field_tag ? -1 : 1);
+	else
+		return ((int)tb->field_type - (int)ta->field_type);
+}
+
+static int
+tagNameCompare(const void* a, const void* b)
+{
+	const TIFFFieldInfo* ta = *(const TIFFFieldInfo**) a;
+	const TIFFFieldInfo* tb = *(const TIFFFieldInfo**) b;
+
+        return strcmp(ta->field_name, tb->field_name);
+}
+
+void
+_TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], int n)
+{
+	TIFFFieldInfo** tp;
+	int i;
+
+        tif->tif_foundfield = NULL;
+
+	if (tif->tif_nfields > 0) {
+		tif->tif_fieldinfo = (TIFFFieldInfo**)
+		    _TIFFrealloc(tif->tif_fieldinfo,
+			(tif->tif_nfields+n) * sizeof (TIFFFieldInfo*));
+	} else {
+		tif->tif_fieldinfo = (TIFFFieldInfo**)
+		    _TIFFmalloc(n * sizeof (TIFFFieldInfo*));
+	}
+	assert(tif->tif_fieldinfo != NULL);
+	tp = tif->tif_fieldinfo + tif->tif_nfields;
+	for (i = 0; i < n; i++)
+		*tp++ = (TIFFFieldInfo*) (info + i);	/* XXX */
+
+        /* Sort the field info by tag number */
+        qsort(tif->tif_fieldinfo, tif->tif_nfields += n,
+	      sizeof (TIFFFieldInfo*), tagCompare);
+}
+
+void
+_TIFFPrintFieldInfo(TIFF* tif, FILE* fd)
+{
+	size_t i;
+
+	fprintf(fd, "%s: \n", tif->tif_name);
+	for (i = 0; i < tif->tif_nfields; i++) {
+		const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
+		fprintf(fd, "field[%2d] %5lu, %2d, %2d, %d, %2d, %5s, %5s, %s\n"
+			, (int)i
+			, (unsigned long) fip->field_tag
+			, fip->field_readcount, fip->field_writecount
+			, fip->field_type
+			, fip->field_bit
+			, fip->field_oktochange ? "TRUE" : "FALSE"
+			, fip->field_passcount ? "TRUE" : "FALSE"
+			, fip->field_name
+		);
+	}
+}
+
+/*
+ * Return size of TIFFDataType in bytes
+ */
+int
+TIFFDataWidth(TIFFDataType type)
+{
+	switch(type)
+	{
+	case 0:  /* nothing */
+	case 1:  /* TIFF_BYTE */
+	case 2:  /* TIFF_ASCII */
+	case 6:  /* TIFF_SBYTE */
+	case 7:  /* TIFF_UNDEFINED */
+		return 1;
+	case 3:  /* TIFF_SHORT */
+	case 8:  /* TIFF_SSHORT */
+		return 2;
+	case 4:  /* TIFF_LONG */
+	case 9:  /* TIFF_SLONG */
+	case 11: /* TIFF_FLOAT */
+        case 13: /* TIFF_IFD */
+		return 4;
+	case 5:  /* TIFF_RATIONAL */
+	case 10: /* TIFF_SRATIONAL */
+	case 12: /* TIFF_DOUBLE */
+		return 8;
+	default:
+		return 0; /* will return 0 for unknown types */
+	}
+}
+
+/*
+ * Return size of TIFFDataType in bytes.
+ *
+ * XXX: We need a separate function to determine the space needed
+ * to store the value. For TIFF_RATIONAL values TIFFDataWidth() returns 8,
+ * but we use 4-byte float to represent rationals.
+ */
+int
+_TIFFDataSize(TIFFDataType type)
+{
+	switch (type) {
+		case TIFF_BYTE:
+		case TIFF_SBYTE:
+		case TIFF_ASCII:
+		case TIFF_UNDEFINED:
+		    return 1;
+		case TIFF_SHORT:
+		case TIFF_SSHORT:
+		    return 2;
+		case TIFF_LONG:
+		case TIFF_SLONG:
+		case TIFF_FLOAT:
+		case TIFF_IFD:
+		case TIFF_RATIONAL:
+		case TIFF_SRATIONAL:
+		    return 4;
+		case TIFF_DOUBLE:
+		    return 8;
+		default:
+		    return 0;
+	}
+}
+
+/*
+ * Return nearest TIFFDataType to the sample type of an image.
+ */
+TIFFDataType
+_TIFFSampleToTagType(TIFF* tif)
+{
+	uint32 bps = TIFFhowmany8(tif->tif_dir.td_bitspersample);
+
+	switch (tif->tif_dir.td_sampleformat) {
+	case SAMPLEFORMAT_IEEEFP:
+		return (bps == 4 ? TIFF_FLOAT : TIFF_DOUBLE);
+	case SAMPLEFORMAT_INT:
+		return (bps <= 1 ? TIFF_SBYTE :
+		    bps <= 2 ? TIFF_SSHORT : TIFF_SLONG);
+	case SAMPLEFORMAT_UINT:
+		return (bps <= 1 ? TIFF_BYTE :
+		    bps <= 2 ? TIFF_SHORT : TIFF_LONG);
+	case SAMPLEFORMAT_VOID:
+		return (TIFF_UNDEFINED);
+	}
+	/*NOTREACHED*/
+	return (TIFF_UNDEFINED);
+}
+
+const TIFFFieldInfo*
+_TIFFFindFieldInfo(TIFF* tif, ttag_t tag, TIFFDataType dt)
+{
+	int i, n;
+
+	if (tif->tif_foundfield && tif->tif_foundfield->field_tag == tag &&
+	    (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))
+		return (tif->tif_foundfield);
+	/* NB: use sorted search (e.g. binary search) */
+	if(dt != TIFF_ANY) {
+            TIFFFieldInfo key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0};
+	    TIFFFieldInfo* pkey = &key;
+	    const TIFFFieldInfo **ret;
+
+	    key.field_tag = tag;
+            key.field_type = dt;
+
+	    ret = (const TIFFFieldInfo **) bsearch(&pkey,
+						   tif->tif_fieldinfo, 
+						   tif->tif_nfields,
+						   sizeof(TIFFFieldInfo *), 
+						   tagCompare);
+	    return (ret) ? (*ret) : NULL;
+        } else for (i = 0, n = tif->tif_nfields; i < n; i++) {
+		const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
+		if (fip->field_tag == tag &&
+		    (dt == TIFF_ANY || fip->field_type == dt))
+			return (tif->tif_foundfield = fip);
+	}
+	return ((const TIFFFieldInfo *)0);
+}
+
+const TIFFFieldInfo*
+_TIFFFindFieldInfoByName(TIFF* tif, const char *field_name, TIFFDataType dt)
+{
+	int i, n;
+
+	if (tif->tif_foundfield
+	    && streq(tif->tif_foundfield->field_name, field_name)
+	    && (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))
+		return (tif->tif_foundfield);
+	/* NB: use sorted search (e.g. binary search) */
+	if(dt != TIFF_ANY) {
+            TIFFFieldInfo key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0};
+	    TIFFFieldInfo* pkey = &key;
+	    const TIFFFieldInfo **ret;
+
+            key.field_name = (char *)field_name;
+            key.field_type = dt;
+
+            ret = (const TIFFFieldInfo **) lfind(&pkey,
+						 tif->tif_fieldinfo, 
+						 &tif->tif_nfields,
+						 sizeof(TIFFFieldInfo *),
+						 tagNameCompare);
+	    return (ret) ? (*ret) : NULL;
+        } else
+		for (i = 0, n = tif->tif_nfields; i < n; i++) {
+			const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
+			if (streq(fip->field_name, field_name) &&
+			    (dt == TIFF_ANY || fip->field_type == dt))
+				return (tif->tif_foundfield = fip);
+		}
+	return ((const TIFFFieldInfo *)0);
+}
+
+const TIFFFieldInfo*
+_TIFFFieldWithTag(TIFF* tif, ttag_t tag)
+{
+	const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
+	if (!fip) {
+		TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithTag",
+			  "Internal error, unknown tag 0x%x",
+                          (unsigned int) tag);
+		assert(fip != NULL);
+		/*NOTREACHED*/
+	}
+	return (fip);
+}
+
+const TIFFFieldInfo*
+_TIFFFieldWithName(TIFF* tif, const char *field_name)
+{
+	const TIFFFieldInfo* fip =
+		_TIFFFindFieldInfoByName(tif, field_name, TIFF_ANY);
+	if (!fip) {
+		TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithName",
+			  "Internal error, unknown tag %s", field_name);
+		assert(fip != NULL);
+		/*NOTREACHED*/
+	}
+	return (fip);
+}
+
+const TIFFFieldInfo*
+_TIFFFindOrRegisterFieldInfo( TIFF *tif, ttag_t tag, TIFFDataType dt )
+
+{
+    const TIFFFieldInfo *fld;
+
+    fld = _TIFFFindFieldInfo( tif, tag, dt );
+    if( fld == NULL )
+    {
+        fld = _TIFFCreateAnonFieldInfo( tif, tag, dt );
+        _TIFFMergeFieldInfo( tif, fld, 1 );
+    }
+
+    return fld;
+}
+
+TIFFFieldInfo*
+_TIFFCreateAnonFieldInfo(TIFF *tif, ttag_t tag, TIFFDataType field_type)
+{
+	TIFFFieldInfo *fld;
+	(void) tif;
+
+	fld = (TIFFFieldInfo *) _TIFFmalloc(sizeof (TIFFFieldInfo));
+	if (fld == NULL)
+	    return NULL;
+	_TIFFmemset( fld, 0, sizeof(TIFFFieldInfo) );
+
+	fld->field_tag = tag;
+	fld->field_readcount = TIFF_VARIABLE;
+	fld->field_writecount = TIFF_VARIABLE;
+	fld->field_type = field_type;
+	fld->field_bit = FIELD_CUSTOM;
+	fld->field_oktochange = TRUE;
+	fld->field_passcount = TRUE;
+	fld->field_name = (char *) _TIFFmalloc(32);
+	if (fld->field_name == NULL) {
+	    _TIFFfree(fld);
+	    return NULL;
+	}
+
+	/* note that this name is a special sign to TIFFClose() and
+	 * _TIFFSetupFieldInfo() to free the field
+	 */
+	sprintf(fld->field_name, "Tag %d", (int) tag);
+
+	return fld;    
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_dirread.c b/src/libtiff/tif_dirread.c
new file mode 100644
index 0000000..5c8c708
--- /dev/null
+++ b/src/libtiff/tif_dirread.c
@@ -0,0 +1,1789 @@
+/* $Id: tif_dirread.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Read Support Routines.
+ */
+#include "tiffiop.h"
+
+#define	IGNORE	0		/* tag placeholder used below */
+
+#ifdef HAVE_IEEEFP
+# define	TIFFCvtIEEEFloatToNative(tif, n, fp)
+# define	TIFFCvtIEEEDoubleToNative(tif, n, dp)
+#else
+extern	void TIFFCvtIEEEFloatToNative(TIFF*, uint32, float*);
+extern	void TIFFCvtIEEEDoubleToNative(TIFF*, uint32, double*);
+#endif
+
+static	int EstimateStripByteCounts(TIFF*, TIFFDirEntry*, uint16);
+static	void MissingRequired(TIFF*, const char*);
+static	int CheckDirCount(TIFF*, TIFFDirEntry*, uint32);
+static	tsize_t TIFFFetchData(TIFF*, TIFFDirEntry*, char*);
+static	tsize_t TIFFFetchString(TIFF*, TIFFDirEntry*, char*);
+static	float TIFFFetchRational(TIFF*, TIFFDirEntry*);
+static	int TIFFFetchNormalTag(TIFF*, TIFFDirEntry*);
+static	int TIFFFetchPerSampleShorts(TIFF*, TIFFDirEntry*, uint16*);
+static	int TIFFFetchPerSampleLongs(TIFF*, TIFFDirEntry*, uint32*);
+static	int TIFFFetchPerSampleAnys(TIFF*, TIFFDirEntry*, double*);
+static	int TIFFFetchShortArray(TIFF*, TIFFDirEntry*, uint16*);
+static	int TIFFFetchStripThing(TIFF*, TIFFDirEntry*, long, uint32**);
+static	int TIFFFetchRefBlackWhite(TIFF*, TIFFDirEntry*);
+static	float TIFFFetchFloat(TIFF*, TIFFDirEntry*);
+static	int TIFFFetchFloatArray(TIFF*, TIFFDirEntry*, float*);
+static	int TIFFFetchDoubleArray(TIFF*, TIFFDirEntry*, double*);
+static	int TIFFFetchAnyArray(TIFF*, TIFFDirEntry*, double*);
+static	int TIFFFetchShortPair(TIFF*, TIFFDirEntry*);
+static	void ChopUpSingleUncompressedStrip(TIFF*);
+
+/*
+ * Read the next TIFF directory from a file
+ * and convert it to the internal format.
+ * We read directories sequentially.
+ */
+int
+TIFFReadDirectory(TIFF* tif)
+{
+	static const char module[] = "TIFFReadDirectory";
+
+	int n;
+	TIFFDirectory* td;
+	TIFFDirEntry *dp, *dir = NULL;
+	uint16 iv;
+	uint32 v;
+	const TIFFFieldInfo* fip;
+	size_t fix;
+	uint16 dircount;
+	toff_t nextdiroff;
+	int diroutoforderwarning = 0;
+	toff_t* new_dirlist;
+
+	tif->tif_diroff = tif->tif_nextdiroff;
+	if (tif->tif_diroff == 0)		/* no more directories */
+		return (0);
+
+	/*
+	 * XXX: Trick to prevent IFD looping. The one can create TIFF file
+	 * with looped directory pointers. We will maintain a list of already
+	 * seen directories and check every IFD offset against this list.
+	 */
+	for (n = 0; n < tif->tif_dirnumber; n++) {
+		if (tif->tif_dirlist[n] == tif->tif_diroff)
+			return (0);
+	}
+	tif->tif_dirnumber++;
+	new_dirlist = (toff_t *)_TIFFrealloc(tif->tif_dirlist,
+					tif->tif_dirnumber * sizeof(toff_t));
+	if (!new_dirlist) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+			  "%s: Failed to allocate space for IFD list",
+			  tif->tif_name);
+		return (0);
+	}
+	tif->tif_dirlist = new_dirlist;
+	tif->tif_dirlist[tif->tif_dirnumber - 1] = tif->tif_diroff;
+
+	/*
+	 * Cleanup any previous compression state.
+	 */
+	(*tif->tif_cleanup)(tif);
+	tif->tif_curdir++;
+	nextdiroff = 0;
+	if (!isMapped(tif)) {
+		if (!SeekOK(tif, tif->tif_diroff)) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Seek error accessing TIFF directory",
+                            tif->tif_name);
+			return (0);
+		}
+		if (!ReadOK(tif, &dircount, sizeof (uint16))) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Can not read TIFF directory count",
+                            tif->tif_name);
+			return (0);
+		}
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabShort(&dircount);
+		dir = (TIFFDirEntry *)_TIFFCheckMalloc(tif, dircount,
+						       sizeof (TIFFDirEntry),
+						"to read TIFF directory");
+		if (dir == NULL)
+			return (0);
+		if (!ReadOK(tif, dir, dircount*sizeof (TIFFDirEntry))) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+                                  "%.100s: Can not read TIFF directory",
+                                  tif->tif_name);
+			goto bad;
+		}
+		/*
+		 * Read offset to next directory for sequential scans.
+		 */
+		(void) ReadOK(tif, &nextdiroff, sizeof (uint32));
+	} else {
+		toff_t off = tif->tif_diroff;
+
+		if (off + sizeof (uint16) > tif->tif_size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Can not read TIFF directory count",
+                            tif->tif_name);
+			return (0);
+		} else
+			_TIFFmemcpy(&dircount, tif->tif_base + off, sizeof (uint16));
+		off += sizeof (uint16);
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabShort(&dircount);
+		dir = (TIFFDirEntry *)_TIFFCheckMalloc(tif, dircount,
+						       sizeof (TIFFDirEntry),
+						"to read TIFF directory");
+		if (dir == NULL)
+			return (0);
+		if (off + dircount*sizeof (TIFFDirEntry) > tif->tif_size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+                                  "%s: Can not read TIFF directory",
+                                  tif->tif_name);
+			goto bad;
+		} else {
+			_TIFFmemcpy(dir, tif->tif_base + off,
+				    dircount*sizeof (TIFFDirEntry));
+		}
+		off += dircount* sizeof (TIFFDirEntry);
+		if (off + sizeof (uint32) <= tif->tif_size)
+			_TIFFmemcpy(&nextdiroff, tif->tif_base+off, sizeof (uint32));
+	}
+	if (tif->tif_flags & TIFF_SWAB)
+		TIFFSwabLong(&nextdiroff);
+	tif->tif_nextdiroff = nextdiroff;
+
+	tif->tif_flags &= ~TIFF_BEENWRITING;	/* reset before new dir */
+	/*
+	 * Setup default value and then make a pass over
+	 * the fields to check type and tag information,
+	 * and to extract info required to size data
+	 * structures.  A second pass is made afterwards
+	 * to read in everthing not taken in the first pass.
+	 */
+	td = &tif->tif_dir;
+	/* free any old stuff and reinit */
+	TIFFFreeDirectory(tif);
+	TIFFDefaultDirectory(tif);
+	/*
+	 * Electronic Arts writes gray-scale TIFF files
+	 * without a PlanarConfiguration directory entry.
+	 * Thus we setup a default value here, even though
+	 * the TIFF spec says there is no default value.
+	 */
+	TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+
+	/*
+	 * Sigh, we must make a separate pass through the
+	 * directory for the following reason:
+	 *
+	 * We must process the Compression tag in the first pass
+	 * in order to merge in codec-private tag definitions (otherwise
+	 * we may get complaints about unknown tags).  However, the
+	 * Compression tag may be dependent on the SamplesPerPixel
+	 * tag value because older TIFF specs permited Compression
+	 * to be written as a SamplesPerPixel-count tag entry.
+	 * Thus if we don't first figure out the correct SamplesPerPixel
+	 * tag value then we may end up ignoring the Compression tag
+	 * value because it has an incorrect count value (if the
+	 * true value of SamplesPerPixel is not 1).
+	 *
+	 * It sure would have been nice if Aldus had really thought
+	 * this stuff through carefully.
+	 */ 
+	for (dp = dir, n = dircount; n > 0; n--, dp++) {
+		if (tif->tif_flags & TIFF_SWAB) {
+			TIFFSwabArrayOfShort(&dp->tdir_tag, 2);
+			TIFFSwabArrayOfLong(&dp->tdir_count, 2);
+		}
+		if (dp->tdir_tag == TIFFTAG_SAMPLESPERPIXEL) {
+			if (!TIFFFetchNormalTag(tif, dp))
+				goto bad;
+			dp->tdir_tag = IGNORE;
+		}
+	}
+	/*
+	 * First real pass over the directory.
+	 */
+	fix = 0;
+	for (dp = dir, n = dircount; n > 0; n--, dp++) {
+
+		if (fix >= tif->tif_nfields || dp->tdir_tag == IGNORE)
+			continue;
+               
+		/*
+		 * Silicon Beach (at least) writes unordered
+		 * directory tags (violating the spec).  Handle
+		 * it here, but be obnoxious (maybe they'll fix it?).
+		 */
+		if (dp->tdir_tag < tif->tif_fieldinfo[fix]->field_tag) {
+			if (!diroutoforderwarning) {
+				TIFFWarningExt(tif->tif_clientdata, module,
+	"%s: invalid TIFF directory; tags are not sorted in ascending order",
+					       tif->tif_name);
+				diroutoforderwarning = 1;
+			}
+			fix = 0;			/* O(n^2) */
+		}
+		while (fix < tif->tif_nfields &&
+		       tif->tif_fieldinfo[fix]->field_tag < dp->tdir_tag)
+			fix++;
+		if (fix >= tif->tif_nfields ||
+		    tif->tif_fieldinfo[fix]->field_tag != dp->tdir_tag) {
+
+					TIFFWarningExt(tif->tif_clientdata,
+						       module,
+                        "%s: unknown field with tag %d (0x%x) encountered",
+						       tif->tif_name,
+						       dp->tdir_tag,
+						       dp->tdir_tag,
+						       dp->tdir_type);
+
+                    TIFFMergeFieldInfo(tif,
+                                       _TIFFCreateAnonFieldInfo(tif,
+						dp->tdir_tag,
+						(TIFFDataType) dp->tdir_type),
+				       1 );
+                    fix = 0;
+                    while (fix < tif->tif_nfields &&
+                           tif->tif_fieldinfo[fix]->field_tag < dp->tdir_tag)
+			fix++;
+		}
+		/*
+		 * Null out old tags that we ignore.
+		 */
+		if (tif->tif_fieldinfo[fix]->field_bit == FIELD_IGNORE) {
+	ignore:
+			dp->tdir_tag = IGNORE;
+			continue;
+		}
+		/*
+		 * Check data type.
+		 */
+		fip = tif->tif_fieldinfo[fix];
+		while (dp->tdir_type != (unsigned short) fip->field_type
+                       && fix < tif->tif_nfields) {
+			if (fip->field_type == TIFF_ANY)	/* wildcard */
+				break;
+                        fip = tif->tif_fieldinfo[++fix];
+			if (fix >= tif->tif_nfields ||
+			    fip->field_tag != dp->tdir_tag) {
+				TIFFWarningExt(tif->tif_clientdata, module,
+			"%s: wrong data type %d for \"%s\"; tag ignored",
+					    tif->tif_name, dp->tdir_type,
+					    tif->tif_fieldinfo[fix-1]->field_name);
+				goto ignore;
+			}
+		}
+		/*
+		 * Check count if known in advance.
+		 */
+		if (fip->field_readcount != TIFF_VARIABLE
+		    && fip->field_readcount != TIFF_VARIABLE2) {
+			uint32 expected = (fip->field_readcount == TIFF_SPP) ?
+			    (uint32) td->td_samplesperpixel :
+			    (uint32) fip->field_readcount;
+			if (!CheckDirCount(tif, dp, expected))
+				goto ignore;
+		}
+
+		switch (dp->tdir_tag) {
+		case TIFFTAG_COMPRESSION:
+			/*
+			 * The 5.0 spec says the Compression tag has
+			 * one value, while earlier specs say it has
+			 * one value per sample.  Because of this, we
+			 * accept the tag if one value is supplied.
+			 */
+			if (dp->tdir_count == 1) {
+				v = TIFFExtractData(tif,
+				    dp->tdir_type, dp->tdir_offset);
+				if (!TIFFSetField(tif, dp->tdir_tag, (uint16)v))
+					goto bad;
+				break;
+			/* XXX: workaround for broken TIFFs */
+			} else if (dp->tdir_type == TIFF_LONG) {
+				if (!TIFFFetchPerSampleLongs(tif, dp, &v) ||
+				    !TIFFSetField(tif, dp->tdir_tag, (uint16)v))
+					goto bad;
+			} else {
+				if (!TIFFFetchPerSampleShorts(tif, dp, &iv)
+				    || !TIFFSetField(tif, dp->tdir_tag, iv))
+					goto bad;
+			}
+			dp->tdir_tag = IGNORE;
+			break;
+		case TIFFTAG_STRIPOFFSETS:
+		case TIFFTAG_STRIPBYTECOUNTS:
+		case TIFFTAG_TILEOFFSETS:
+		case TIFFTAG_TILEBYTECOUNTS:
+			TIFFSetFieldBit(tif, fip->field_bit);
+			break;
+		case TIFFTAG_IMAGEWIDTH:
+		case TIFFTAG_IMAGELENGTH:
+		case TIFFTAG_IMAGEDEPTH:
+		case TIFFTAG_TILELENGTH:
+		case TIFFTAG_TILEWIDTH:
+		case TIFFTAG_TILEDEPTH:
+		case TIFFTAG_PLANARCONFIG:
+		case TIFFTAG_ROWSPERSTRIP:
+		case TIFFTAG_EXTRASAMPLES:
+			if (!TIFFFetchNormalTag(tif, dp))
+				goto bad;
+			dp->tdir_tag = IGNORE;
+			break;
+		}
+	}
+
+	/*
+	 * Allocate directory structure and setup defaults.
+	 */
+	if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
+		MissingRequired(tif, "ImageLength");
+		goto bad;
+	}
+	/* 
+ 	 * Setup appropriate structures (by strip or by tile)
+	 */
+	if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
+		td->td_nstrips = TIFFNumberOfStrips(tif);
+		td->td_tilewidth = td->td_imagewidth;
+		td->td_tilelength = td->td_rowsperstrip;
+		td->td_tiledepth = td->td_imagedepth;
+		tif->tif_flags &= ~TIFF_ISTILED;
+	} else {
+		td->td_nstrips = TIFFNumberOfTiles(tif);
+		tif->tif_flags |= TIFF_ISTILED;
+	}
+	if (!td->td_nstrips) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+			     "%s: cannot handle zero number of %s",
+			     tif->tif_name, isTiled(tif) ? "tiles" : "strips");
+		goto bad;
+	}
+	td->td_stripsperimage = td->td_nstrips;
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+		td->td_stripsperimage /= td->td_samplesperpixel;
+	if (!TIFFFieldSet(tif, FIELD_STRIPOFFSETS)) {
+		MissingRequired(tif,
+				isTiled(tif) ? "TileOffsets" : "StripOffsets");
+		goto bad;
+	}
+
+	/*
+	 * Second pass: extract other information.
+	 */
+	for (dp = dir, n = dircount; n > 0; n--, dp++) {
+		if (dp->tdir_tag == IGNORE)
+			continue;
+		switch (dp->tdir_tag) {
+		case TIFFTAG_MINSAMPLEVALUE:
+		case TIFFTAG_MAXSAMPLEVALUE:
+		case TIFFTAG_BITSPERSAMPLE:
+		case TIFFTAG_DATATYPE:
+		case TIFFTAG_SAMPLEFORMAT:
+			/*
+			 * The 5.0 spec says the Compression tag has
+			 * one value, while earlier specs say it has
+			 * one value per sample.  Because of this, we
+			 * accept the tag if one value is supplied.
+			 *
+                         * The MinSampleValue, MaxSampleValue, BitsPerSample
+                         * DataType and SampleFormat tags are supposed to be
+                         * written as one value/sample, but some vendors
+                         * incorrectly write one value only -- so we accept
+                         * that as well (yech). Other vendors write correct
+			 * value for NumberOfSamples, but incorrect one for
+			 * BitsPerSample and friends, and we will read this
+			 * too.
+			 */
+			if (dp->tdir_count == 1) {
+				v = TIFFExtractData(tif,
+				    dp->tdir_type, dp->tdir_offset);
+				if (!TIFFSetField(tif, dp->tdir_tag, (uint16)v))
+					goto bad;
+			/* XXX: workaround for broken TIFFs */
+			} else if (dp->tdir_tag == TIFFTAG_BITSPERSAMPLE
+				   && dp->tdir_type == TIFF_LONG) {
+				if (!TIFFFetchPerSampleLongs(tif, dp, &v) ||
+				    !TIFFSetField(tif, dp->tdir_tag, (uint16)v))
+					goto bad;
+			} else {
+				if (!TIFFFetchPerSampleShorts(tif, dp, &iv) ||
+				    !TIFFSetField(tif, dp->tdir_tag, iv))
+					goto bad;
+			}
+			break;
+		case TIFFTAG_SMINSAMPLEVALUE:
+		case TIFFTAG_SMAXSAMPLEVALUE:
+			{
+				double dv = 0.0;
+				if (!TIFFFetchPerSampleAnys(tif, dp, &dv) ||
+				    !TIFFSetField(tif, dp->tdir_tag, dv))
+					goto bad;
+			}
+			break;
+		case TIFFTAG_STRIPOFFSETS:
+		case TIFFTAG_TILEOFFSETS:
+			if (!TIFFFetchStripThing(tif, dp,
+			    td->td_nstrips, &td->td_stripoffset))
+				goto bad;
+			break;
+		case TIFFTAG_STRIPBYTECOUNTS:
+		case TIFFTAG_TILEBYTECOUNTS:
+			if (!TIFFFetchStripThing(tif, dp,
+			    td->td_nstrips, &td->td_stripbytecount))
+				goto bad;
+			break;
+		case TIFFTAG_COLORMAP:
+		case TIFFTAG_TRANSFERFUNCTION:
+			{
+				char* cp;
+				/*
+				 * TransferFunction can have either 1x or 3x
+				 * data values; Colormap can have only 3x
+				 * items.
+				 */
+				v = 1L<<td->td_bitspersample;
+				if (dp->tdir_tag == TIFFTAG_COLORMAP ||
+				    dp->tdir_count != v) {
+					if (!CheckDirCount(tif, dp, 3 * v))
+						break;
+				}
+				v *= sizeof(uint16);
+				cp = (char *)_TIFFCheckMalloc(tif,
+							      dp->tdir_count,
+							      sizeof (uint16),
+					"to read \"TransferFunction\" tag");
+				if (cp != NULL) {
+					if (TIFFFetchData(tif, dp, cp)) {
+						/*
+						 * This deals with there being
+						 * only one array to apply to
+						 * all samples.
+						 */
+						uint32 c = 1L << td->td_bitspersample;
+						if (dp->tdir_count == c)
+							v = 0L;
+						TIFFSetField(tif, dp->tdir_tag,
+						    cp, cp+v, cp+2*v);
+					}
+					_TIFFfree(cp);
+				}
+				break;
+			}
+		case TIFFTAG_PAGENUMBER:
+		case TIFFTAG_HALFTONEHINTS:
+		case TIFFTAG_YCBCRSUBSAMPLING:
+		case TIFFTAG_DOTRANGE:
+			(void) TIFFFetchShortPair(tif, dp);
+			break;
+		case TIFFTAG_REFERENCEBLACKWHITE:
+			(void) TIFFFetchRefBlackWhite(tif, dp);
+			break;
+/* BEGIN REV 4.0 COMPATIBILITY */
+		case TIFFTAG_OSUBFILETYPE:
+			v = 0L;
+			switch (TIFFExtractData(tif, dp->tdir_type,
+			    dp->tdir_offset)) {
+			case OFILETYPE_REDUCEDIMAGE:
+				v = FILETYPE_REDUCEDIMAGE;
+				break;
+			case OFILETYPE_PAGE:
+				v = FILETYPE_PAGE;
+				break;
+			}
+			if (v)
+				TIFFSetField(tif, TIFFTAG_SUBFILETYPE, v);
+			break;
+/* END REV 4.0 COMPATIBILITY */
+		default:
+			(void) TIFFFetchNormalTag(tif, dp);
+			break;
+		}
+	}
+	/*
+	 * Verify Palette image has a Colormap.
+	 */
+	if (td->td_photometric == PHOTOMETRIC_PALETTE &&
+	    !TIFFFieldSet(tif, FIELD_COLORMAP)) {
+		MissingRequired(tif, "Colormap");
+		goto bad;
+	}
+	/*
+	 * Attempt to deal with a missing StripByteCounts tag.
+	 */
+	if (!TIFFFieldSet(tif, FIELD_STRIPBYTECOUNTS)) {
+		/*
+		 * Some manufacturers violate the spec by not giving
+		 * the size of the strips.  In this case, assume there
+		 * is one uncompressed strip of data.
+		 */
+		if ((td->td_planarconfig == PLANARCONFIG_CONTIG &&
+		    td->td_nstrips > 1) ||
+		    (td->td_planarconfig == PLANARCONFIG_SEPARATE &&
+		     td->td_nstrips != td->td_samplesperpixel)) {
+		    MissingRequired(tif, "StripByteCounts");
+		    goto bad;
+		}
+		TIFFWarningExt(tif->tif_clientdata, module,
+			"%s: TIFF directory is missing required "
+			"\"%s\" field, calculating from imagelength",
+			tif->tif_name,
+		        _TIFFFieldWithTag(tif,TIFFTAG_STRIPBYTECOUNTS)->field_name);
+		if (EstimateStripByteCounts(tif, dir, dircount) < 0)
+		    goto bad;
+/* 
+ * Assume we have wrong StripByteCount value (in case of single strip) in
+ * following cases:
+ *   - it is equal to zero along with StripOffset;
+ *   - it is larger than file itself (in case of uncompressed image);
+ *   - it is smaller than the size of the bytes per row multiplied on the
+ *     number of rows.  The last case should not be checked in the case of
+ *     writing new image, because we may do not know the exact strip size
+ *     until the whole image will be written and directory dumped out.
+ */
+#define	BYTECOUNTLOOKSBAD \
+    ( (td->td_stripbytecount[0] == 0 && td->td_stripoffset[0] != 0) || \
+      (td->td_compression == COMPRESSION_NONE && \
+       td->td_stripbytecount[0] > TIFFGetFileSize(tif) - td->td_stripoffset[0]) || \
+      (tif->tif_mode == O_RDONLY && \
+       td->td_compression == COMPRESSION_NONE && \
+       td->td_stripbytecount[0] < TIFFScanlineSize(tif) * td->td_imagelength) )
+
+	} else if (td->td_nstrips == 1 
+                   && td->td_stripoffset[0] != 0 
+                   && BYTECOUNTLOOKSBAD) {
+		/*
+		 * XXX: Plexus (and others) sometimes give a value of zero for
+		 * a tag when they don't know what the correct value is!  Try
+		 * and handle the simple case of estimating the size of a one
+		 * strip image.
+		 */
+		TIFFWarningExt(tif->tif_clientdata, module,
+	"%s: Bogus \"%s\" field, ignoring and calculating from imagelength",
+                            tif->tif_name,
+		            _TIFFFieldWithTag(tif,TIFFTAG_STRIPBYTECOUNTS)->field_name);
+		if(EstimateStripByteCounts(tif, dir, dircount) < 0)
+		    goto bad;
+	} else if (td->td_planarconfig == PLANARCONFIG_CONTIG
+		   && td->td_nstrips > 2
+		   && td->td_compression == COMPRESSION_NONE
+		   && td->td_stripbytecount[0] != td->td_stripbytecount[1]) {
+		/*
+		 * XXX: Some vendors fill StripByteCount array with absolutely
+		 * wrong values (it can be equal to StripOffset array, for
+		 * example). Catch this case here.
+		 */
+		TIFFWarningExt(tif->tif_clientdata, module,
+	"%s: Wrong \"%s\" field, ignoring and calculating from imagelength",
+                            tif->tif_name,
+		            _TIFFFieldWithTag(tif,TIFFTAG_STRIPBYTECOUNTS)->field_name);
+		if (EstimateStripByteCounts(tif, dir, dircount) < 0)
+		    goto bad;
+	}
+	if (dir) {
+		_TIFFfree((char *)dir);
+		dir = NULL;
+	}
+	if (!TIFFFieldSet(tif, FIELD_MAXSAMPLEVALUE))
+		td->td_maxsamplevalue = (uint16)((1L<<td->td_bitspersample)-1);
+	/*
+	 * Setup default compression scheme.
+	 */
+
+	/*
+	 * XXX: We can optimize checking for the strip bounds using the sorted
+	 * bytecounts array. See also comments for TIFFAppendToStrip()
+	 * function in tif_write.c.
+	 */
+	if (td->td_nstrips > 1) {
+		tstrip_t strip;
+
+		td->td_stripbytecountsorted = 1;
+		for (strip = 1; strip < td->td_nstrips; strip++) {
+			if (td->td_stripoffset[strip - 1] >
+			    td->td_stripoffset[strip]) {
+				td->td_stripbytecountsorted = 0;
+				break;
+			}
+		}
+	}
+
+	if (!TIFFFieldSet(tif, FIELD_COMPRESSION))
+		TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
+        /*
+         * Some manufacturers make life difficult by writing
+	 * large amounts of uncompressed data as a single strip.
+	 * This is contrary to the recommendations of the spec.
+         * The following makes an attempt at breaking such images
+	 * into strips closer to the recommended 8k bytes.  A
+	 * side effect, however, is that the RowsPerStrip tag
+	 * value may be changed.
+         */
+	if (td->td_nstrips == 1 && td->td_compression == COMPRESSION_NONE &&
+	    (tif->tif_flags & (TIFF_STRIPCHOP|TIFF_ISTILED)) == TIFF_STRIPCHOP)
+		ChopUpSingleUncompressedStrip(tif);
+
+	/*
+	 * Reinitialize i/o since we are starting on a new directory.
+	 */
+	tif->tif_row = (uint32) -1;
+	tif->tif_curstrip = (tstrip_t) -1;
+	tif->tif_col = (uint32) -1;
+	tif->tif_curtile = (ttile_t) -1;
+	tif->tif_tilesize = (tsize_t) -1;
+
+	tif->tif_scanlinesize = TIFFScanlineSize(tif);
+	if (!tif->tif_scanlinesize) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: cannot handle zero scanline size",
+			  tif->tif_name);
+		return (0);
+	}
+
+	if (isTiled(tif)) {
+		tif->tif_tilesize = TIFFTileSize(tif);
+		if (!tif->tif_tilesize) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: cannot handle zero tile size",
+				  tif->tif_name);
+			return (0);
+		}
+	} else {
+		if (!TIFFStripSize(tif)) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: cannot handle zero strip size",
+				  tif->tif_name);
+			return (0);
+		}
+	}
+	return (1);
+bad:
+	if (dir)
+		_TIFFfree(dir);
+	return (0);
+}
+
+/* 
+ * Read custom directory from the arbitarry offset.
+ * The code is very similar to TIFFReadDirectory().
+ */
+int
+TIFFReadCustomDirectory(TIFF* tif, toff_t diroff,
+			const TIFFFieldInfo info[], size_t n)
+{
+	static const char module[] = "TIFFReadCustomDirectory";
+
+	TIFFDirectory* td = &tif->tif_dir;
+	TIFFDirEntry *dp, *dir = NULL;
+	const TIFFFieldInfo* fip;
+	size_t fix;
+	uint16 i, dircount;
+
+	_TIFFSetupFieldInfo(tif, info, n);
+
+	tif->tif_diroff = diroff;
+
+	if (!isMapped(tif)) {
+		if (!SeekOK(tif, diroff)) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Seek error accessing TIFF directory",
+                            tif->tif_name);
+			return (0);
+		}
+		if (!ReadOK(tif, &dircount, sizeof (uint16))) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Can not read TIFF directory count",
+                            tif->tif_name);
+			return (0);
+		}
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabShort(&dircount);
+		dir = (TIFFDirEntry *)_TIFFCheckMalloc(tif, dircount,
+						       sizeof (TIFFDirEntry),
+					"to read TIFF custom directory");
+		if (dir == NULL)
+			return (0);
+		if (!ReadOK(tif, dir, dircount * sizeof (TIFFDirEntry))) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+                                  "%.100s: Can not read TIFF directory",
+                                  tif->tif_name);
+			goto bad;
+		}
+	} else {
+		toff_t off = diroff;
+
+		if (off + sizeof (uint16) > tif->tif_size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Can not read TIFF directory count",
+                            tif->tif_name);
+			return (0);
+		} else
+			_TIFFmemcpy(&dircount, tif->tif_base + off, sizeof (uint16));
+		off += sizeof (uint16);
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabShort(&dircount);
+		dir = (TIFFDirEntry *)_TIFFCheckMalloc(tif, dircount,
+						       sizeof (TIFFDirEntry),
+					"to read TIFF custom directory");
+		if (dir == NULL)
+			return (0);
+		if (off + dircount * sizeof (TIFFDirEntry) > tif->tif_size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+                                  "%s: Can not read TIFF directory",
+                                  tif->tif_name);
+			goto bad;
+		} else {
+			_TIFFmemcpy(dir, tif->tif_base + off,
+				    dircount * sizeof (TIFFDirEntry));
+		}
+	}
+
+	TIFFFreeDirectory(tif);
+
+	fix = 0;
+	for (dp = dir, i = dircount; i > 0; i--, dp++) {
+		if (tif->tif_flags & TIFF_SWAB) {
+			TIFFSwabArrayOfShort(&dp->tdir_tag, 2);
+			TIFFSwabArrayOfLong(&dp->tdir_count, 2);
+		}
+
+		if (fix >= tif->tif_nfields || dp->tdir_tag == IGNORE)
+			continue;
+
+		while (fix < tif->tif_nfields &&
+		       tif->tif_fieldinfo[fix]->field_tag < dp->tdir_tag)
+			fix++;
+
+		if (fix >= tif->tif_nfields ||
+		    tif->tif_fieldinfo[fix]->field_tag != dp->tdir_tag) {
+
+			TIFFWarningExt(tif->tif_clientdata, module,
+                        "%s: unknown field with tag %d (0x%x) encountered",
+				    tif->tif_name, dp->tdir_tag, dp->tdir_tag,
+				    dp->tdir_type);
+
+			TIFFMergeFieldInfo(tif,
+					   _TIFFCreateAnonFieldInfo(tif,
+						dp->tdir_tag,
+						(TIFFDataType)dp->tdir_type),
+					   1);
+
+			fix = 0;
+			while (fix < tif->tif_nfields &&
+			       tif->tif_fieldinfo[fix]->field_tag < dp->tdir_tag)
+				fix++;
+		}
+		/*
+		 * Null out old tags that we ignore.
+		 */
+		if (tif->tif_fieldinfo[fix]->field_bit == FIELD_IGNORE) {
+	ignore:
+			dp->tdir_tag = IGNORE;
+			continue;
+		}
+		/*
+		 * Check data type.
+		 */
+		fip = tif->tif_fieldinfo[fix];
+		while (dp->tdir_type != (unsigned short) fip->field_type
+                       && fix < tif->tif_nfields) {
+			if (fip->field_type == TIFF_ANY)	/* wildcard */
+				break;
+                        fip = tif->tif_fieldinfo[++fix];
+			if (fix >= tif->tif_nfields ||
+			    fip->field_tag != dp->tdir_tag) {
+				TIFFWarningExt(tif->tif_clientdata, module,
+			"%s: wrong data type %d for \"%s\"; tag ignored",
+					    tif->tif_name, dp->tdir_type,
+					    tif->tif_fieldinfo[fix-1]->field_name);
+				goto ignore;
+			}
+		}
+		/*
+		 * Check count if known in advance.
+		 */
+		if (fip->field_readcount != TIFF_VARIABLE
+		    && fip->field_readcount != TIFF_VARIABLE2) {
+			uint32 expected = (fip->field_readcount == TIFF_SPP) ?
+			    (uint32) td->td_samplesperpixel :
+			    (uint32) fip->field_readcount;
+			if (!CheckDirCount(tif, dp, expected))
+				goto ignore;
+		}
+
+		(void) TIFFFetchNormalTag(tif, dp);
+	}
+	
+	if (dir)
+		_TIFFfree(dir);
+	return 1;
+
+bad:
+	if (dir)
+		_TIFFfree(dir);
+	return 0;
+}
+
+/*
+ * EXIF is important special case of custom IFD, so we have a special
+ * function to read it.
+ */
+int
+TIFFReadEXIFDirectory(TIFF* tif, toff_t diroff)
+{
+	size_t exifFieldInfoCount;
+	const TIFFFieldInfo *exifFieldInfo =
+		_TIFFGetExifFieldInfo(&exifFieldInfoCount);
+	return TIFFReadCustomDirectory(tif, diroff, exifFieldInfo,
+				       exifFieldInfoCount);
+}
+
+static int
+EstimateStripByteCounts(TIFF* tif, TIFFDirEntry* dir, uint16 dircount)
+{
+	static const char module[] = "EstimateStripByteCounts";
+
+	register TIFFDirEntry *dp;
+	register TIFFDirectory *td = &tif->tif_dir;
+	uint16 i;
+
+	if (td->td_stripbytecount)
+		_TIFFfree(td->td_stripbytecount);
+	td->td_stripbytecount = (uint32*)
+	    _TIFFCheckMalloc(tif, td->td_nstrips, sizeof (uint32),
+		"for \"StripByteCounts\" array");
+	if (td->td_compression != COMPRESSION_NONE) {
+		uint32 space = (uint32)(sizeof (TIFFHeader)
+		    + sizeof (uint16)
+		    + (dircount * sizeof (TIFFDirEntry))
+		    + sizeof (uint32));
+		toff_t filesize = TIFFGetFileSize(tif);
+		uint16 n;
+
+		/* calculate amount of space used by indirect values */
+		for (dp = dir, n = dircount; n > 0; n--, dp++)
+		{
+			uint32 cc = TIFFDataWidth((TIFFDataType) dp->tdir_type);
+			if (cc == 0) {
+				TIFFErrorExt(tif->tif_clientdata, module,
+			"%s: Cannot determine size of unknown tag type %d",
+					  tif->tif_name, dp->tdir_type);
+				return -1;
+			}
+			cc = cc * dp->tdir_count;
+			if (cc > sizeof (uint32))
+				space += cc;
+		}
+		space = filesize - space;
+		if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+			space /= td->td_samplesperpixel;
+		for (i = 0; i < td->td_nstrips; i++)
+			td->td_stripbytecount[i] = space;
+		/*
+		 * This gross hack handles the case were the offset to
+		 * the last strip is past the place where we think the strip
+		 * should begin.  Since a strip of data must be contiguous,
+		 * it's safe to assume that we've overestimated the amount
+		 * of data in the strip and trim this number back accordingly.
+		 */ 
+		i--;
+		if (((toff_t)(td->td_stripoffset[i]+td->td_stripbytecount[i]))
+                                                               > filesize)
+			td->td_stripbytecount[i] =
+			    filesize - td->td_stripoffset[i];
+	} else {
+		uint32 rowbytes = TIFFScanlineSize(tif);
+		uint32 rowsperstrip = td->td_imagelength/td->td_stripsperimage;
+		for (i = 0; i < td->td_nstrips; i++)
+			td->td_stripbytecount[i] = rowbytes*rowsperstrip;
+	}
+	TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
+	if (!TIFFFieldSet(tif, FIELD_ROWSPERSTRIP))
+		td->td_rowsperstrip = td->td_imagelength;
+	return 1;
+}
+
+static void
+MissingRequired(TIFF* tif, const char* tagname)
+{
+	static const char module[] = "MissingRequired";
+
+	TIFFErrorExt(tif->tif_clientdata, module,
+		  "%s: TIFF directory is missing required \"%s\" field",
+		  tif->tif_name, tagname);
+}
+
+/*
+ * Check the count field of a directory
+ * entry against a known value.  The caller
+ * is expected to skip/ignore the tag if
+ * there is a mismatch.
+ */
+static int
+CheckDirCount(TIFF* tif, TIFFDirEntry* dir, uint32 count)
+{
+	if (count > dir->tdir_count) {
+		TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+	"incorrect count for field \"%s\" (%lu, expecting %lu); tag ignored",
+		    _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name,
+		    dir->tdir_count, count);
+		return (0);
+	} else if (count < dir->tdir_count) {
+		TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+	"incorrect count for field \"%s\" (%lu, expecting %lu); tag trimmed",
+		    _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name,
+		    dir->tdir_count, count);
+		return (1);
+	}
+	return (1);
+}
+
+/*
+ * Fetch a contiguous directory item.
+ */
+static tsize_t
+TIFFFetchData(TIFF* tif, TIFFDirEntry* dir, char* cp)
+{
+	int w = TIFFDataWidth((TIFFDataType) dir->tdir_type);
+	tsize_t cc = dir->tdir_count * w;
+
+	/* Check for overflow. */
+	if (!dir->tdir_count || !w || cc / w != (tsize_t)dir->tdir_count)
+		goto bad;
+
+	if (!isMapped(tif)) {
+		if (!SeekOK(tif, dir->tdir_offset))
+			goto bad;
+		if (!ReadOK(tif, cp, cc))
+			goto bad;
+	} else {
+		/* Check for overflow. */
+		if ((tsize_t)dir->tdir_offset + cc < (tsize_t)dir->tdir_offset
+		    || (tsize_t)dir->tdir_offset + cc < cc
+		    || (tsize_t)dir->tdir_offset + cc > (tsize_t)tif->tif_size)
+			goto bad;
+		_TIFFmemcpy(cp, tif->tif_base + dir->tdir_offset, cc);
+	}
+	if (tif->tif_flags & TIFF_SWAB) {
+		switch (dir->tdir_type) {
+		case TIFF_SHORT:
+		case TIFF_SSHORT:
+			TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
+			break;
+		case TIFF_LONG:
+		case TIFF_SLONG:
+		case TIFF_FLOAT:
+			TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
+			break;
+		case TIFF_RATIONAL:
+		case TIFF_SRATIONAL:
+			TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
+			break;
+		case TIFF_DOUBLE:
+			TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
+			break;
+		}
+	}
+	return (cc);
+bad:
+	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		     "Error fetching data for field \"%s\"",
+		     _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
+	return (tsize_t) 0;
+}
+
+/*
+ * Fetch an ASCII item from the file.
+ */
+static tsize_t
+TIFFFetchString(TIFF* tif, TIFFDirEntry* dir, char* cp)
+{
+	if (dir->tdir_count <= 4) {
+		uint32 l = dir->tdir_offset;
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabLong(&l);
+		_TIFFmemcpy(cp, &l, dir->tdir_count);
+		return (1);
+	}
+	return (TIFFFetchData(tif, dir, cp));
+}
+
+/*
+ * Convert numerator+denominator to float.
+ */
+static int
+cvtRational(TIFF* tif, TIFFDirEntry* dir, uint32 num, uint32 denom, float* rv)
+{
+	if (denom == 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "%s: Rational with zero denominator (num = %lu)",
+		    _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name, num);
+		return (0);
+	} else {
+		if (dir->tdir_type == TIFF_RATIONAL)
+			*rv = ((float)num / (float)denom);
+		else
+			*rv = ((float)(int32)num / (float)(int32)denom);
+		return (1);
+	}
+}
+
+/*
+ * Fetch a rational item from the file
+ * at offset off and return the value
+ * as a floating point number.
+ */
+static float
+TIFFFetchRational(TIFF* tif, TIFFDirEntry* dir)
+{
+	uint32 l[2];
+	float v;
+
+	return (!TIFFFetchData(tif, dir, (char *)l) ||
+	    !cvtRational(tif, dir, l[0], l[1], &v) ? 1.0f : v);
+}
+
+/*
+ * Fetch a single floating point value
+ * from the offset field and return it
+ * as a native float.
+ */
+static float
+TIFFFetchFloat(TIFF* tif, TIFFDirEntry* dir)
+{
+	float v;
+	int32 l = TIFFExtractData(tif, dir->tdir_type, dir->tdir_offset);
+        _TIFFmemcpy(&v, &l, sizeof(float));
+	TIFFCvtIEEEFloatToNative(tif, 1, &v);
+	return (v);
+}
+
+/*
+ * Fetch an array of BYTE or SBYTE values.
+ */
+static int
+TIFFFetchByteArray(TIFF* tif, TIFFDirEntry* dir, uint8* v)
+{
+    if (dir->tdir_count <= 4) {
+        /*
+         * Extract data from offset field.
+         */
+        if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
+	    if (dir->tdir_type == TIFF_SBYTE)
+                switch (dir->tdir_count) {
+                    case 4: v[3] = dir->tdir_offset & 0xff;
+                    case 3: v[2] = (dir->tdir_offset >> 8) & 0xff;
+                    case 2: v[1] = (dir->tdir_offset >> 16) & 0xff;
+		    case 1: v[0] = dir->tdir_offset >> 24;
+                }
+	    else
+                switch (dir->tdir_count) {
+                    case 4: v[3] = dir->tdir_offset & 0xff;
+                    case 3: v[2] = (dir->tdir_offset >> 8) & 0xff;
+                    case 2: v[1] = (dir->tdir_offset >> 16) & 0xff;
+		    case 1: v[0] = dir->tdir_offset >> 24;
+                }
+	} else {
+	    if (dir->tdir_type == TIFF_SBYTE)
+                switch (dir->tdir_count) {
+                    case 4: v[3] = dir->tdir_offset >> 24;
+                    case 3: v[2] = (dir->tdir_offset >> 16) & 0xff;
+                    case 2: v[1] = (dir->tdir_offset >> 8) & 0xff;
+                    case 1: v[0] = dir->tdir_offset & 0xff;
+		}
+	    else
+                switch (dir->tdir_count) {
+                    case 4: v[3] = dir->tdir_offset >> 24;
+                    case 3: v[2] = (dir->tdir_offset >> 16) & 0xff;
+                    case 2: v[1] = (dir->tdir_offset >> 8) & 0xff;
+                    case 1: v[0] = dir->tdir_offset & 0xff;
+		}
+	}
+        return (1);
+    } else
+        return (TIFFFetchData(tif, dir, (char*) v) != 0);	/* XXX */
+}
+
+/*
+ * Fetch an array of SHORT or SSHORT values.
+ */
+static int
+TIFFFetchShortArray(TIFF* tif, TIFFDirEntry* dir, uint16* v)
+{
+	if (dir->tdir_count <= 2) {
+		if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
+			switch (dir->tdir_count) {
+			case 2: v[1] = (uint16) (dir->tdir_offset & 0xffff);
+			case 1: v[0] = (uint16) (dir->tdir_offset >> 16);
+			}
+		} else {
+			switch (dir->tdir_count) {
+			case 2: v[1] = (uint16) (dir->tdir_offset >> 16);
+			case 1: v[0] = (uint16) (dir->tdir_offset & 0xffff);
+			}
+		}
+		return (1);
+	} else
+		return (TIFFFetchData(tif, dir, (char *)v) != 0);
+}
+
+/*
+ * Fetch a pair of SHORT or BYTE values. Some tags may have either BYTE
+ * or SHORT type and this function works with both ones.
+ */
+static int
+TIFFFetchShortPair(TIFF* tif, TIFFDirEntry* dir)
+{
+	switch (dir->tdir_type) {
+		case TIFF_BYTE:
+		case TIFF_SBYTE:
+			{
+			uint8 v[4];
+			return TIFFFetchByteArray(tif, dir, v)
+				&& TIFFSetField(tif, dir->tdir_tag, v[0], v[1]);
+			}
+		case TIFF_SHORT:
+		case TIFF_SSHORT:
+			{
+			uint16 v[2];
+			return TIFFFetchShortArray(tif, dir, v)
+				&& TIFFSetField(tif, dir->tdir_tag, v[0], v[1]);
+			}
+		default:
+			return 0;
+	}
+}
+
+/*
+ * Fetch an array of LONG or SLONG values.
+ */
+static int
+TIFFFetchLongArray(TIFF* tif, TIFFDirEntry* dir, uint32* v)
+{
+	if (dir->tdir_count == 1) {
+		v[0] = dir->tdir_offset;
+		return (1);
+	} else
+		return (TIFFFetchData(tif, dir, (char*) v) != 0);
+}
+
+/*
+ * Fetch an array of RATIONAL or SRATIONAL values.
+ */
+static int
+TIFFFetchRationalArray(TIFF* tif, TIFFDirEntry* dir, float* v)
+{
+	int ok = 0;
+	uint32* l;
+
+	l = (uint32*)_TIFFCheckMalloc(tif,
+	    dir->tdir_count, TIFFDataWidth((TIFFDataType) dir->tdir_type),
+	    "to fetch array of rationals");
+	if (l) {
+		if (TIFFFetchData(tif, dir, (char *)l)) {
+			uint32 i;
+			for (i = 0; i < dir->tdir_count; i++) {
+				ok = cvtRational(tif, dir,
+				    l[2*i+0], l[2*i+1], &v[i]);
+				if (!ok)
+					break;
+			}
+		}
+		_TIFFfree((char *)l);
+	}
+	return (ok);
+}
+
+/*
+ * Fetch an array of FLOAT values.
+ */
+static int
+TIFFFetchFloatArray(TIFF* tif, TIFFDirEntry* dir, float* v)
+{
+
+	if (dir->tdir_count == 1) {
+		v[0] = *(float*) &dir->tdir_offset;
+		TIFFCvtIEEEFloatToNative(tif, dir->tdir_count, v);
+		return (1);
+	} else	if (TIFFFetchData(tif, dir, (char*) v)) {
+		TIFFCvtIEEEFloatToNative(tif, dir->tdir_count, v);
+		return (1);
+	} else
+		return (0);
+}
+
+/*
+ * Fetch an array of DOUBLE values.
+ */
+static int
+TIFFFetchDoubleArray(TIFF* tif, TIFFDirEntry* dir, double* v)
+{
+	if (TIFFFetchData(tif, dir, (char*) v)) {
+		TIFFCvtIEEEDoubleToNative(tif, dir->tdir_count, v);
+		return (1);
+	} else
+		return (0);
+}
+
+/*
+ * Fetch an array of ANY values.  The actual values are
+ * returned as doubles which should be able hold all the
+ * types.  Yes, there really should be an tany_t to avoid
+ * this potential non-portability ...  Note in particular
+ * that we assume that the double return value vector is
+ * large enough to read in any fundamental type.  We use
+ * that vector as a buffer to read in the base type vector
+ * and then convert it in place to double (from end
+ * to front of course).
+ */
+static int
+TIFFFetchAnyArray(TIFF* tif, TIFFDirEntry* dir, double* v)
+{
+	int i;
+
+	switch (dir->tdir_type) {
+	case TIFF_BYTE:
+	case TIFF_SBYTE:
+		if (!TIFFFetchByteArray(tif, dir, (uint8*) v))
+			return (0);
+		if (dir->tdir_type == TIFF_BYTE) {
+			uint8* vp = (uint8*) v;
+			for (i = dir->tdir_count-1; i >= 0; i--)
+				v[i] = vp[i];
+		} else {
+			int8* vp = (int8*) v;
+			for (i = dir->tdir_count-1; i >= 0; i--)
+				v[i] = vp[i];
+		}
+		break;
+	case TIFF_SHORT:
+	case TIFF_SSHORT:
+		if (!TIFFFetchShortArray(tif, dir, (uint16*) v))
+			return (0);
+		if (dir->tdir_type == TIFF_SHORT) {
+			uint16* vp = (uint16*) v;
+			for (i = dir->tdir_count-1; i >= 0; i--)
+				v[i] = vp[i];
+		} else {
+			int16* vp = (int16*) v;
+			for (i = dir->tdir_count-1; i >= 0; i--)
+				v[i] = vp[i];
+		}
+		break;
+	case TIFF_LONG:
+	case TIFF_SLONG:
+		if (!TIFFFetchLongArray(tif, dir, (uint32*) v))
+			return (0);
+		if (dir->tdir_type == TIFF_LONG) {
+			uint32* vp = (uint32*) v;
+			for (i = dir->tdir_count-1; i >= 0; i--)
+				v[i] = vp[i];
+		} else {
+			int32* vp = (int32*) v;
+			for (i = dir->tdir_count-1; i >= 0; i--)
+				v[i] = vp[i];
+		}
+		break;
+	case TIFF_RATIONAL:
+	case TIFF_SRATIONAL:
+		if (!TIFFFetchRationalArray(tif, dir, (float*) v))
+			return (0);
+		{ float* vp = (float*) v;
+		  for (i = dir->tdir_count-1; i >= 0; i--)
+			v[i] = vp[i];
+		}
+		break;
+	case TIFF_FLOAT:
+		if (!TIFFFetchFloatArray(tif, dir, (float*) v))
+			return (0);
+		{ float* vp = (float*) v;
+		  for (i = dir->tdir_count-1; i >= 0; i--)
+			v[i] = vp[i];
+		}
+		break;
+	case TIFF_DOUBLE:
+		return (TIFFFetchDoubleArray(tif, dir, (double*) v));
+	default:
+		/* TIFF_NOTYPE */
+		/* TIFF_ASCII */
+		/* TIFF_UNDEFINED */
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			     "cannot read TIFF_ANY type %d for field \"%s\"",
+			     dir->tdir_type,
+			     _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * Fetch a tag that is not handled by special case code.
+ */
+static int
+TIFFFetchNormalTag(TIFF* tif, TIFFDirEntry* dp)
+{
+	static const char mesg[] = "to fetch tag value";
+	int ok = 0;
+	const TIFFFieldInfo* fip = _TIFFFieldWithTag(tif, dp->tdir_tag);
+
+	if (dp->tdir_count > 1) {		/* array of values */
+		char* cp = NULL;
+
+		switch (dp->tdir_type) {
+		case TIFF_BYTE:
+		case TIFF_SBYTE:
+			cp = (char *)_TIFFCheckMalloc(tif,
+			    dp->tdir_count, sizeof (uint8), mesg);
+			ok = cp && TIFFFetchByteArray(tif, dp, (uint8*) cp);
+			break;
+		case TIFF_SHORT:
+		case TIFF_SSHORT:
+			cp = (char *)_TIFFCheckMalloc(tif,
+			    dp->tdir_count, sizeof (uint16), mesg);
+			ok = cp && TIFFFetchShortArray(tif, dp, (uint16*) cp);
+			break;
+		case TIFF_LONG:
+		case TIFF_SLONG:
+			cp = (char *)_TIFFCheckMalloc(tif,
+			    dp->tdir_count, sizeof (uint32), mesg);
+			ok = cp && TIFFFetchLongArray(tif, dp, (uint32*) cp);
+			break;
+		case TIFF_RATIONAL:
+		case TIFF_SRATIONAL:
+			cp = (char *)_TIFFCheckMalloc(tif,
+			    dp->tdir_count, sizeof (float), mesg);
+			ok = cp && TIFFFetchRationalArray(tif, dp, (float*) cp);
+			break;
+		case TIFF_FLOAT:
+			cp = (char *)_TIFFCheckMalloc(tif,
+			    dp->tdir_count, sizeof (float), mesg);
+			ok = cp && TIFFFetchFloatArray(tif, dp, (float*) cp);
+			break;
+		case TIFF_DOUBLE:
+			cp = (char *)_TIFFCheckMalloc(tif,
+			    dp->tdir_count, sizeof (double), mesg);
+			ok = cp && TIFFFetchDoubleArray(tif, dp, (double*) cp);
+			break;
+		case TIFF_ASCII:
+		case TIFF_UNDEFINED:		/* bit of a cheat... */
+			/*
+			 * Some vendors write strings w/o the trailing
+			 * NULL byte, so always append one just in case.
+			 */
+			cp = (char *)_TIFFCheckMalloc(tif, dp->tdir_count + 1,
+						      1, mesg);
+			if( (ok = (cp && TIFFFetchString(tif, dp, cp))) != 0 )
+				cp[dp->tdir_count] = '\0';	/* XXX */
+			break;
+		}
+		if (ok) {
+			ok = (fip->field_passcount ?
+			    TIFFSetField(tif, dp->tdir_tag, dp->tdir_count, cp)
+			  : TIFFSetField(tif, dp->tdir_tag, cp));
+		}
+		if (cp != NULL)
+			_TIFFfree(cp);
+	} else if (CheckDirCount(tif, dp, 1)) {	/* singleton value */
+		switch (dp->tdir_type) {
+		case TIFF_BYTE:
+		case TIFF_SBYTE:
+		case TIFF_SHORT:
+		case TIFF_SSHORT:
+			/*
+			 * If the tag is also acceptable as a LONG or SLONG
+			 * then TIFFSetField will expect an uint32 parameter
+			 * passed to it (through varargs).  Thus, for machines
+			 * where sizeof (int) != sizeof (uint32) we must do
+			 * a careful check here.  It's hard to say if this
+			 * is worth optimizing.
+			 *
+			 * NB: We use TIFFFieldWithTag here knowing that
+			 *     it returns us the first entry in the table
+			 *     for the tag and that that entry is for the
+			 *     widest potential data type the tag may have.
+			 */
+			{ TIFFDataType type = fip->field_type;
+			  if (type != TIFF_LONG && type != TIFF_SLONG) {
+				uint16 v = (uint16)
+			   TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset);
+				ok = (fip->field_passcount ?
+				    TIFFSetField(tif, dp->tdir_tag, 1, &v)
+				  : TIFFSetField(tif, dp->tdir_tag, v));
+				break;
+			  }
+			}
+			/* fall thru... */
+		case TIFF_LONG:
+		case TIFF_SLONG:
+			{ uint32 v32 =
+		    TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset);
+			  ok = (fip->field_passcount ? 
+			      TIFFSetField(tif, dp->tdir_tag, 1, &v32)
+			    : TIFFSetField(tif, dp->tdir_tag, v32));
+			}
+			break;
+		case TIFF_RATIONAL:
+		case TIFF_SRATIONAL:
+		case TIFF_FLOAT:
+			{ float v = (dp->tdir_type == TIFF_FLOAT ? 
+			      TIFFFetchFloat(tif, dp)
+			    : TIFFFetchRational(tif, dp));
+			  ok = (fip->field_passcount ?
+			      TIFFSetField(tif, dp->tdir_tag, 1, &v)
+			    : TIFFSetField(tif, dp->tdir_tag, v));
+			}
+			break;
+		case TIFF_DOUBLE:
+			{ double v;
+			  ok = (TIFFFetchDoubleArray(tif, dp, &v) &&
+			    (fip->field_passcount ?
+			      TIFFSetField(tif, dp->tdir_tag, 1, &v)
+			    : TIFFSetField(tif, dp->tdir_tag, v))
+			  );
+			}
+			break;
+		case TIFF_ASCII:
+		case TIFF_UNDEFINED:		/* bit of a cheat... */
+			{ char c[2];
+			  if( (ok = (TIFFFetchString(tif, dp, c) != 0)) != 0 ) {
+				c[1] = '\0';		/* XXX paranoid */
+				ok = (fip->field_passcount ?
+					TIFFSetField(tif, dp->tdir_tag, 1, c)
+				      : TIFFSetField(tif, dp->tdir_tag, c));
+			  }
+			}
+			break;
+		}
+	}
+	return (ok);
+}
+
+#define	NITEMS(x)	(sizeof (x) / sizeof (x[0]))
+/*
+ * Fetch samples/pixel short values for 
+ * the specified tag and verify that
+ * all values are the same.
+ */
+static int
+TIFFFetchPerSampleShorts(TIFF* tif, TIFFDirEntry* dir, uint16* pl)
+{
+    uint16 samples = tif->tif_dir.td_samplesperpixel;
+    int status = 0;
+
+    if (CheckDirCount(tif, dir, (uint32) samples)) {
+        uint16 buf[10];
+        uint16* v = buf;
+
+        if (dir->tdir_count > NITEMS(buf))
+            v = (uint16*) _TIFFCheckMalloc(tif, dir->tdir_count, sizeof(uint16),
+                                      "to fetch per-sample values");
+        if (v && TIFFFetchShortArray(tif, dir, v)) {
+            uint16 i;
+            int check_count = dir->tdir_count;
+            if( samples < check_count )
+                check_count = samples;
+
+            for (i = 1; i < check_count; i++)
+                if (v[i] != v[0]) {
+					TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+                              "Cannot handle different per-sample values for field \"%s\"",
+                              _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
+                    goto bad;
+                }
+            *pl = v[0];
+            status = 1;
+        }
+      bad:
+        if (v && v != buf)
+            _TIFFfree(v);
+    }
+    return (status);
+}
+
+/*
+ * Fetch samples/pixel long values for 
+ * the specified tag and verify that
+ * all values are the same.
+ */
+static int
+TIFFFetchPerSampleLongs(TIFF* tif, TIFFDirEntry* dir, uint32* pl)
+{
+    uint16 samples = tif->tif_dir.td_samplesperpixel;
+    int status = 0;
+
+    if (CheckDirCount(tif, dir, (uint32) samples)) {
+        uint32 buf[10];
+        uint32* v = buf;
+
+        if (dir->tdir_count > NITEMS(buf))
+            v = (uint32*) _TIFFCheckMalloc(tif, dir->tdir_count, sizeof(uint32),
+                                      "to fetch per-sample values");
+        if (v && TIFFFetchLongArray(tif, dir, v)) {
+            uint16 i;
+            int check_count = dir->tdir_count;
+
+            if( samples < check_count )
+                check_count = samples;
+            for (i = 1; i < check_count; i++)
+                if (v[i] != v[0]) {
+					TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+                              "Cannot handle different per-sample values for field \"%s\"",
+                              _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
+                    goto bad;
+                }
+            *pl = v[0];
+            status = 1;
+        }
+      bad:
+        if (v && v != buf)
+            _TIFFfree(v);
+    }
+    return (status);
+}
+
+/*
+ * Fetch samples/pixel ANY values for the specified tag and verify that all
+ * values are the same.
+ */
+static int
+TIFFFetchPerSampleAnys(TIFF* tif, TIFFDirEntry* dir, double* pl)
+{
+    uint16 samples = tif->tif_dir.td_samplesperpixel;
+    int status = 0;
+
+    if (CheckDirCount(tif, dir, (uint32) samples)) {
+        double buf[10];
+        double* v = buf;
+
+        if (dir->tdir_count > NITEMS(buf))
+            v = (double*) _TIFFCheckMalloc(tif, dir->tdir_count, sizeof (double),
+                                      "to fetch per-sample values");
+        if (v && TIFFFetchAnyArray(tif, dir, v)) {
+            uint16 i;
+            int check_count = dir->tdir_count;
+            if( samples < check_count )
+                check_count = samples;
+
+            for (i = 1; i < check_count; i++)
+                if (v[i] != v[0]) {
+                    TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+                              "Cannot handle different per-sample values for field \"%s\"",
+                              _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
+                    goto bad;
+                }
+            *pl = v[0];
+            status = 1;
+        }
+      bad:
+        if (v && v != buf)
+            _TIFFfree(v);
+    }
+    return (status);
+}
+#undef NITEMS
+
+/*
+ * Fetch a set of offsets or lengths.
+ * While this routine says "strips", in fact it's also used for tiles.
+ */
+static int
+TIFFFetchStripThing(TIFF* tif, TIFFDirEntry* dir, long nstrips, uint32** lpp)
+{
+	register uint32* lp;
+	int status;
+
+        CheckDirCount(tif, dir, (uint32) nstrips);
+
+	/*
+	 * Allocate space for strip information.
+	 */
+	if (*lpp == NULL &&
+	    (*lpp = (uint32 *)_TIFFCheckMalloc(tif,
+	      nstrips, sizeof (uint32), "for strip array")) == NULL)
+		return (0);
+	lp = *lpp;
+        _TIFFmemset( lp, 0, sizeof(uint32) * nstrips );
+
+	if (dir->tdir_type == (int)TIFF_SHORT) {
+		/*
+		 * Handle uint16->uint32 expansion.
+		 */
+		uint16* dp = (uint16*) _TIFFCheckMalloc(tif,
+		    dir->tdir_count, sizeof (uint16), "to fetch strip tag");
+		if (dp == NULL)
+			return (0);
+		if( (status = TIFFFetchShortArray(tif, dir, dp)) != 0 ) {
+                    int i;
+                    
+                    for( i = 0; i < nstrips && i < (int) dir->tdir_count; i++ )
+                    {
+                        lp[i] = dp[i];
+                    }
+		}
+		_TIFFfree((char*) dp);
+
+        } else if( nstrips != (int) dir->tdir_count ) {
+            /* Special case to correct length */
+
+            uint32* dp = (uint32*) _TIFFCheckMalloc(tif,
+		    dir->tdir_count, sizeof (uint32), "to fetch strip tag");
+            if (dp == NULL)
+                return (0);
+
+            status = TIFFFetchLongArray(tif, dir, dp);
+            if( status != 0 ) {
+                int i;
+
+                for( i = 0; i < nstrips && i < (int) dir->tdir_count; i++ )
+                {
+                    lp[i] = dp[i];
+                }
+            }
+
+            _TIFFfree( (char *) dp );
+	} else
+            status = TIFFFetchLongArray(tif, dir, lp);
+        
+	return (status);
+}
+
+/*
+ * Fetch and set the RefBlackWhite tag.
+ */
+static int
+TIFFFetchRefBlackWhite(TIFF* tif, TIFFDirEntry* dir)
+{
+	static const char mesg[] = "for \"ReferenceBlackWhite\" array";
+	char* cp;
+	int ok;
+
+	if (dir->tdir_type == TIFF_RATIONAL)
+		return (TIFFFetchNormalTag(tif, dir));
+	/*
+	 * Handle LONG's for backward compatibility.
+	 */
+	cp = (char *)_TIFFCheckMalloc(tif, dir->tdir_count,
+				      sizeof (uint32), mesg);
+	if( (ok = (cp && TIFFFetchLongArray(tif, dir, (uint32*) cp))) != 0) {
+		float* fp = (float*)
+		    _TIFFCheckMalloc(tif, dir->tdir_count, sizeof (float), mesg);
+		if( (ok = (fp != NULL)) != 0 ) {
+			uint32 i;
+			for (i = 0; i < dir->tdir_count; i++)
+				fp[i] = (float)((uint32*) cp)[i];
+			ok = TIFFSetField(tif, dir->tdir_tag, fp);
+			_TIFFfree((char*) fp);
+		}
+	}
+	if (cp)
+		_TIFFfree(cp);
+	return (ok);
+}
+
+/*
+ * Replace a single strip (tile) of uncompressed data by
+ * multiple strips (tiles), each approximately 8Kbytes.
+ * This is useful for dealing with large images or
+ * for dealing with machines with a limited amount
+ * memory.
+ */
+static void
+ChopUpSingleUncompressedStrip(TIFF* tif)
+{
+	register TIFFDirectory *td = &tif->tif_dir;
+	uint32 bytecount = td->td_stripbytecount[0];
+	uint32 offset = td->td_stripoffset[0];
+	tsize_t rowbytes = TIFFVTileSize(tif, 1), stripbytes;
+	tstrip_t strip, nstrips, rowsperstrip;
+	uint32* newcounts;
+	uint32* newoffsets;
+
+	/*
+	 * Make the rows hold at least one scanline, but fill specified amount
+	 * of data if possible.
+	 */
+	if (rowbytes > STRIP_SIZE_DEFAULT) {
+		stripbytes = rowbytes;
+		rowsperstrip = 1;
+	} else if (rowbytes > 0 ) {
+		rowsperstrip = STRIP_SIZE_DEFAULT / rowbytes;
+		stripbytes = rowbytes * rowsperstrip;
+	}
+        else
+            return;
+
+	/* 
+	 * never increase the number of strips in an image
+	 */
+	if (rowsperstrip >= td->td_rowsperstrip)
+		return;
+	nstrips = (tstrip_t) TIFFhowmany(bytecount, stripbytes);
+        if( nstrips == 0 ) /* something is wonky, do nothing. */
+            return;
+
+	newcounts = (uint32*) _TIFFCheckMalloc(tif, nstrips, sizeof (uint32),
+				"for chopped \"StripByteCounts\" array");
+	newoffsets = (uint32*) _TIFFCheckMalloc(tif, nstrips, sizeof (uint32),
+				"for chopped \"StripOffsets\" array");
+	if (newcounts == NULL || newoffsets == NULL) {
+	        /*
+		 * Unable to allocate new strip information, give
+		 * up and use the original one strip information.
+		 */
+		if (newcounts != NULL)
+			_TIFFfree(newcounts);
+		if (newoffsets != NULL)
+			_TIFFfree(newoffsets);
+		return;
+	}
+	/*
+	 * Fill the strip information arrays with new bytecounts and offsets
+	 * that reflect the broken-up format.
+	 */
+	for (strip = 0; strip < nstrips; strip++) {
+		if (stripbytes > (tsize_t) bytecount)
+			stripbytes = bytecount;
+		newcounts[strip] = stripbytes;
+		newoffsets[strip] = offset;
+		offset += stripbytes;
+		bytecount -= stripbytes;
+	}
+	/*
+	 * Replace old single strip info with multi-strip info.
+	 */
+	td->td_stripsperimage = td->td_nstrips = nstrips;
+	TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
+
+	_TIFFfree(td->td_stripbytecount);
+	_TIFFfree(td->td_stripoffset);
+	td->td_stripbytecount = newcounts;
+	td->td_stripoffset = newoffsets;
+	td->td_stripbytecountsorted = 1;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_dirwrite.c b/src/libtiff/tif_dirwrite.c
new file mode 100644
index 0000000..d775354
--- /dev/null
+++ b/src/libtiff/tif_dirwrite.c
@@ -0,0 +1,1243 @@
+/* $Id: tif_dirwrite.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Write Support Routines.
+ */
+#include "tiffiop.h"
+
+#ifdef HAVE_IEEEFP
+# define	TIFFCvtNativeToIEEEFloat(tif, n, fp)
+# define	TIFFCvtNativeToIEEEDouble(tif, n, dp)
+#else
+extern	void TIFFCvtNativeToIEEEFloat(TIFF*, uint32, float*);
+extern	void TIFFCvtNativeToIEEEDouble(TIFF*, uint32, double*);
+#endif
+
+static	int TIFFWriteNormalTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*);
+static	void TIFFSetupShortLong(TIFF*, ttag_t, TIFFDirEntry*, uint32);
+static	void TIFFSetupShort(TIFF*, ttag_t, TIFFDirEntry*, uint16);
+static	int TIFFSetupShortPair(TIFF*, ttag_t, TIFFDirEntry*);
+static	int TIFFWritePerSampleShorts(TIFF*, ttag_t, TIFFDirEntry*);
+static	int TIFFWritePerSampleAnys(TIFF*, TIFFDataType, ttag_t, TIFFDirEntry*);
+static	int TIFFWriteShortTable(TIFF*, ttag_t, TIFFDirEntry*, uint32, uint16**);
+static	int TIFFWriteShortArray(TIFF*, TIFFDirEntry*, uint16*);
+static	int TIFFWriteLongArray(TIFF *, TIFFDirEntry*, uint32*);
+static	int TIFFWriteRationalArray(TIFF *, TIFFDirEntry*, float*);
+static	int TIFFWriteFloatArray(TIFF *, TIFFDirEntry*, float*);
+static	int TIFFWriteDoubleArray(TIFF *, TIFFDirEntry*, double*);
+static	int TIFFWriteByteArray(TIFF*, TIFFDirEntry*, char*);
+static	int TIFFWriteAnyArray(TIFF*,
+	    TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*);
+static	int TIFFWriteTransferFunction(TIFF*, TIFFDirEntry*);
+static	int TIFFWriteInkNames(TIFF*, TIFFDirEntry*);
+static	int TIFFWriteData(TIFF*, TIFFDirEntry*, char*);
+static	int TIFFLinkDirectory(TIFF*);
+
+#define	WriteRationalPair(type, tag1, v1, tag2, v2) {		\
+	TIFFWriteRational((tif), (type), (tag1), (dir), (v1))	\
+	TIFFWriteRational((tif), (type), (tag2), (dir)+1, (v2))	\
+	(dir)++;						\
+}
+#define	TIFFWriteRational(tif, type, tag, dir, v)		\
+	(dir)->tdir_tag = (tag);				\
+	(dir)->tdir_type = (type);				\
+	(dir)->tdir_count = 1;					\
+	if (!TIFFWriteRationalArray((tif), (dir), &(v)))	\
+		goto bad;
+
+/*
+ * Write the contents of the current directory
+ * to the specified file.  This routine doesn't
+ * handle overwriting a directory with auxiliary
+ * storage that's been changed.
+ */
+static int
+_TIFFWriteDirectory(TIFF* tif, int done)
+{
+	uint16 dircount;
+	toff_t diroff;
+	ttag_t tag;
+	uint32 nfields;
+	tsize_t dirsize;
+	char* data;
+	TIFFDirEntry* dir;
+	TIFFDirectory* td;
+	unsigned long b, fields[FIELD_SETLONGS];
+	int fi, nfi;
+
+	if (tif->tif_mode == O_RDONLY)
+		return (1);
+	/*
+	 * Clear write state so that subsequent images with
+	 * different characteristics get the right buffers
+	 * setup for them.
+	 */
+	if (done)
+	{
+	    if (tif->tif_flags & TIFF_POSTENCODE) {
+		    tif->tif_flags &= ~TIFF_POSTENCODE;
+		    if (!(*tif->tif_postencode)(tif)) {
+				TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+				"Error post-encoding before directory write");
+			    return (0);
+		    }
+	    }
+	    (*tif->tif_close)(tif);		/* shutdown encoder */
+	    /*
+	     * Flush any data that might have been written
+	     * by the compression close+cleanup routines.
+	     */
+	    if (tif->tif_rawcc > 0 && !TIFFFlushData1(tif)) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			"Error flushing data before directory write");
+		    return (0);
+	    }
+	    if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
+		    _TIFFfree(tif->tif_rawdata);
+		    tif->tif_rawdata = NULL;
+		    tif->tif_rawcc = 0;
+		    tif->tif_rawdatasize = 0;
+	    }
+	    tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP);
+	}
+
+	td = &tif->tif_dir;
+	/*
+	 * Size the directory so that we can calculate
+	 * offsets for the data items that aren't kept
+	 * in-place in each field.
+	 */
+	nfields = 0;
+	for (b = 0; b <= FIELD_LAST; b++)
+		if (TIFFFieldSet(tif, b) && b != FIELD_CUSTOM)
+			nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
+        nfields += td->td_customValueCount;
+	dirsize = nfields * sizeof (TIFFDirEntry);
+	data = (char*) _TIFFmalloc(dirsize);
+	if (data == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "Cannot write directory, out of space");
+		return (0);
+	}
+	/*
+	 * Directory hasn't been placed yet, put
+	 * it at the end of the file and link it
+	 * into the existing directory structure.
+	 */
+	if (tif->tif_diroff == 0 && !TIFFLinkDirectory(tif))
+		goto bad;
+	tif->tif_dataoff = (toff_t)(
+	    tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
+	if (tif->tif_dataoff & 1)
+		tif->tif_dataoff++;
+	(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
+	tif->tif_curdir++;
+	dir = (TIFFDirEntry*) data;
+	/*
+	 * Setup external form of directory
+	 * entries and write data items.
+	 */
+	_TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
+	/*
+	 * Write out ExtraSamples tag only if
+	 * extra samples are present in the data.
+	 */
+	if (FieldSet(fields, FIELD_EXTRASAMPLES) && !td->td_extrasamples) {
+		ResetFieldBit(fields, FIELD_EXTRASAMPLES);
+		nfields--;
+		dirsize -= sizeof (TIFFDirEntry);
+	}								/*XXX*/
+	for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
+		const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
+
+                /*
+                ** For custom fields, we test to see if the custom field
+                ** is set or not.  For normal fields, we just use the
+                ** FieldSet test. 
+                */
+                if( fip->field_bit == FIELD_CUSTOM )
+                {
+                    int ci, is_set = FALSE;
+
+                    for( ci = 0; ci < td->td_customValueCount; ci++ )
+                        is_set |= (td->td_customValues[ci].info == fip);
+
+                    if( !is_set )
+                        continue;
+                }
+		else if (!FieldSet(fields, fip->field_bit))
+                    continue;
+
+
+                /*
+                ** Handle other fields.
+                */
+		switch (fip->field_bit)
+                {
+		case FIELD_STRIPOFFSETS:
+			/*
+			 * We use one field bit for both strip and tile
+
+			 * offsets, and so must be careful in selecting
+			 * the appropriate field descriptor (so that tags
+			 * are written in sorted order).
+			 */
+			tag = isTiled(tif) ?
+			    TIFFTAG_TILEOFFSETS : TIFFTAG_STRIPOFFSETS;
+			if (tag != fip->field_tag)
+				continue;
+			
+			dir->tdir_tag = (uint16) tag;
+			dir->tdir_type = (uint16) TIFF_LONG;
+			dir->tdir_count = (uint32) td->td_nstrips;
+			if (!TIFFWriteLongArray(tif, dir, td->td_stripoffset))
+				goto bad;
+			break;
+		case FIELD_STRIPBYTECOUNTS:
+			/*
+			 * We use one field bit for both strip and tile
+			 * byte counts, and so must be careful in selecting
+			 * the appropriate field descriptor (so that tags
+			 * are written in sorted order).
+			 */
+			tag = isTiled(tif) ?
+			    TIFFTAG_TILEBYTECOUNTS : TIFFTAG_STRIPBYTECOUNTS;
+			if (tag != fip->field_tag)
+				continue;
+			
+			dir->tdir_tag = (uint16) tag;
+			dir->tdir_type = (uint16) TIFF_LONG;
+			dir->tdir_count = (uint32) td->td_nstrips;
+			if (!TIFFWriteLongArray(tif, dir,
+						td->td_stripbytecount))
+				goto bad;
+			break;
+		case FIELD_ROWSPERSTRIP:
+			TIFFSetupShortLong(tif, TIFFTAG_ROWSPERSTRIP,
+			    dir, td->td_rowsperstrip);
+			break;
+		case FIELD_COLORMAP:
+			if (!TIFFWriteShortTable(tif, TIFFTAG_COLORMAP, dir,
+			    3, td->td_colormap))
+				goto bad;
+			break;
+		case FIELD_IMAGEDIMENSIONS:
+			TIFFSetupShortLong(tif, TIFFTAG_IMAGEWIDTH,
+			    dir++, td->td_imagewidth);
+			TIFFSetupShortLong(tif, TIFFTAG_IMAGELENGTH,
+			    dir, td->td_imagelength);
+			break;
+		case FIELD_TILEDIMENSIONS:
+			TIFFSetupShortLong(tif, TIFFTAG_TILEWIDTH,
+			    dir++, td->td_tilewidth);
+			TIFFSetupShortLong(tif, TIFFTAG_TILELENGTH,
+			    dir, td->td_tilelength);
+			break;
+		case FIELD_COMPRESSION:
+			TIFFSetupShort(tif, TIFFTAG_COMPRESSION,
+			    dir, td->td_compression);
+			break;
+		case FIELD_PHOTOMETRIC:
+			TIFFSetupShort(tif, TIFFTAG_PHOTOMETRIC,
+			    dir, td->td_photometric);
+			break;
+		case FIELD_POSITION:
+			WriteRationalPair(TIFF_RATIONAL,
+			    TIFFTAG_XPOSITION, td->td_xposition,
+			    TIFFTAG_YPOSITION, td->td_yposition);
+			break;
+		case FIELD_RESOLUTION:
+			WriteRationalPair(TIFF_RATIONAL,
+			    TIFFTAG_XRESOLUTION, td->td_xresolution,
+			    TIFFTAG_YRESOLUTION, td->td_yresolution);
+			break;
+		case FIELD_BITSPERSAMPLE:
+		case FIELD_MINSAMPLEVALUE:
+		case FIELD_MAXSAMPLEVALUE:
+		case FIELD_SAMPLEFORMAT:
+			if (!TIFFWritePerSampleShorts(tif, fip->field_tag, dir))
+				goto bad;
+			break;
+		case FIELD_SMINSAMPLEVALUE:
+		case FIELD_SMAXSAMPLEVALUE:
+			if (!TIFFWritePerSampleAnys(tif,
+			    _TIFFSampleToTagType(tif), fip->field_tag, dir))
+				goto bad;
+			break;
+		case FIELD_PAGENUMBER:
+		case FIELD_HALFTONEHINTS:
+		case FIELD_YCBCRSUBSAMPLING:
+			if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
+				goto bad;
+			break;
+		case FIELD_INKNAMES:
+			if (!TIFFWriteInkNames(tif, dir))
+				goto bad;
+			break;
+		case FIELD_TRANSFERFUNCTION:
+			if (!TIFFWriteTransferFunction(tif, dir))
+				goto bad;
+			break;
+		case FIELD_SUBIFD:
+			/*
+			 * XXX: Always write this field using LONG type
+			 * for backward compatibility.
+			 */
+			dir->tdir_tag = (uint16) fip->field_tag;
+			dir->tdir_type = (uint16) TIFF_LONG;
+			dir->tdir_count = (uint32) td->td_nsubifd;
+			if (!TIFFWriteLongArray(tif, dir, td->td_subifd))
+				goto bad;
+			/*
+			 * Total hack: if this directory includes a SubIFD
+			 * tag then force the next <n> directories to be
+			 * written as ``sub directories'' of this one.  This
+			 * is used to write things like thumbnails and
+			 * image masks that one wants to keep out of the
+			 * normal directory linkage access mechanism.
+			 */
+			if (dir->tdir_count > 0) {
+				tif->tif_flags |= TIFF_INSUBIFD;
+				tif->tif_nsubifd = (uint16) dir->tdir_count;
+				if (dir->tdir_count > 1)
+					tif->tif_subifdoff = dir->tdir_offset;
+				else
+					tif->tif_subifdoff = (uint32)(
+					      tif->tif_diroff
+					    + sizeof (uint16)
+					    + ((char*)&dir->tdir_offset-data));
+			}
+			break;
+		default:
+			/* XXX: Should be fixed and removed. */
+			if (fip->field_tag == TIFFTAG_DOTRANGE) {
+				if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
+					goto bad;
+			}
+			else if (!TIFFWriteNormalTag(tif, dir, fip))
+				goto bad;
+			break;
+		}
+		dir++;
+                
+                if( fip->field_bit != FIELD_CUSTOM )
+                    ResetFieldBit(fields, fip->field_bit);
+	}
+
+	/*
+	 * Write directory.
+	 */
+	dircount = (uint16) nfields;
+	diroff = (uint32) tif->tif_nextdiroff;
+	if (tif->tif_flags & TIFF_SWAB) {
+		/*
+		 * The file's byte order is opposite to the
+		 * native machine architecture.  We overwrite
+		 * the directory information with impunity
+		 * because it'll be released below after we
+		 * write it to the file.  Note that all the
+		 * other tag construction routines assume that
+		 * we do this byte-swapping; i.e. they only
+		 * byte-swap indirect data.
+		 */
+		for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
+			TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
+			TIFFSwabArrayOfLong(&dir->tdir_count, 2);
+		}
+		dircount = (uint16) nfields;
+		TIFFSwabShort(&dircount);
+		TIFFSwabLong(&diroff);
+	}
+	(void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
+	if (!WriteOK(tif, &dircount, sizeof (dircount))) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing directory count");
+		goto bad;
+	}
+	if (!WriteOK(tif, data, dirsize)) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing directory contents");
+		goto bad;
+	}
+	if (!WriteOK(tif, &diroff, sizeof (diroff))) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing directory link");
+		goto bad;
+	}
+	if (done) {
+		TIFFFreeDirectory(tif);
+		tif->tif_flags &= ~TIFF_DIRTYDIRECT;
+		(*tif->tif_cleanup)(tif);
+
+		/*
+		* Reset directory-related state for subsequent
+		* directories.
+		*/
+		TIFFCreateDirectory(tif);
+	}
+	_TIFFfree(data);
+	return (1);
+bad:
+	_TIFFfree(data);
+	return (0);
+}
+#undef WriteRationalPair
+
+int
+TIFFWriteDirectory(TIFF* tif)
+{
+	return _TIFFWriteDirectory(tif, TRUE);
+}
+
+/*
+ * Similar to TIFFWriteDirectory(), writes the directory out
+ * but leaves all data structures in memory so that it can be
+ * written again.  This will make a partially written TIFF file
+ * readable before it is successfully completed/closed.
+ */ 
+int
+TIFFCheckpointDirectory(TIFF* tif)
+{
+	int rc;
+	/* Setup the strips arrays, if they haven't already been. */
+	if (tif->tif_dir.td_stripoffset == NULL)
+	    (void) TIFFSetupStrips(tif);
+	rc = _TIFFWriteDirectory(tif, FALSE);
+	(void) TIFFSetWriteOffset(tif, TIFFSeekFile(tif, 0, SEEK_END));
+	return rc;
+}
+
+/*
+ * Process tags that are not special cased.
+ */
+static int
+TIFFWriteNormalTag(TIFF* tif, TIFFDirEntry* dir, const TIFFFieldInfo* fip)
+{
+	uint16 wc = (uint16) fip->field_writecount;
+	uint32 wc2;
+
+	dir->tdir_tag = (uint16) fip->field_tag;
+	dir->tdir_type = (uint16) fip->field_type;
+	dir->tdir_count = wc;
+	
+	switch (fip->field_type) {
+	case TIFF_SHORT:
+	case TIFF_SSHORT:
+		if (fip->field_passcount) {
+			uint16* wp;
+			if (wc == (uint16) TIFF_VARIABLE2) {
+				TIFFGetField(tif, fip->field_tag, &wc2, &wp);
+				dir->tdir_count = wc2;
+			} else {	/* Assume TIFF_VARIABLE */
+				TIFFGetField(tif, fip->field_tag, &wc, &wp);
+				dir->tdir_count = wc;
+			}
+			if (!TIFFWriteShortArray(tif, dir, wp))
+				return 0;
+		} else {
+			if (wc == 1) {
+				uint16 sv;
+				TIFFGetField(tif, fip->field_tag, &sv);
+				dir->tdir_offset =
+					TIFFInsertData(tif, dir->tdir_type, sv);
+			} else {
+				uint16* wp;
+				TIFFGetField(tif, fip->field_tag, &wp);
+				if (!TIFFWriteShortArray(tif, dir, wp))
+					return 0;
+			}
+		}
+		break;
+	case TIFF_LONG:
+	case TIFF_SLONG:
+	case TIFF_IFD:
+		if (fip->field_passcount) {
+			uint32* lp;
+			if (wc == (uint16) TIFF_VARIABLE2) {
+				TIFFGetField(tif, fip->field_tag, &wc2, &lp);
+				dir->tdir_count = wc2;
+			} else {	/* Assume TIFF_VARIABLE */
+				TIFFGetField(tif, fip->field_tag, &wc, &lp);
+				dir->tdir_count = wc;
+			}
+			if (!TIFFWriteLongArray(tif, dir, lp))
+				return 0;
+		} else {
+			if (wc == 1) {
+				/* XXX handle LONG->SHORT conversion */
+				TIFFGetField(tif, fip->field_tag,
+					     &dir->tdir_offset);
+			} else {
+				uint32* lp;
+				TIFFGetField(tif, fip->field_tag, &lp);
+				if (!TIFFWriteLongArray(tif, dir, lp))
+					return 0;
+			}
+		}
+		break;
+	case TIFF_RATIONAL:
+	case TIFF_SRATIONAL:
+		if (fip->field_passcount) {
+			float* fp;
+			if (wc == (uint16) TIFF_VARIABLE2) {
+				TIFFGetField(tif, fip->field_tag, &wc2, &fp);
+				dir->tdir_count = wc2;
+			} else {	/* Assume TIFF_VARIABLE */
+				TIFFGetField(tif, fip->field_tag, &wc, &fp);
+				dir->tdir_count = wc;
+			}
+			if (!TIFFWriteRationalArray(tif, dir, fp))
+				return 0;
+		} else {
+			if (wc == 1) {
+				float fv;
+				TIFFGetField(tif, fip->field_tag, &fv);
+				if (!TIFFWriteRationalArray(tif, dir, &fv))
+					return 0;
+			} else {
+				float* fp;
+				TIFFGetField(tif, fip->field_tag, &fp);
+				if (!TIFFWriteRationalArray(tif, dir, fp))
+					return 0;
+			}
+		}
+		break;
+	case TIFF_FLOAT:
+		if (fip->field_passcount) {
+			float* fp;
+			if (wc == (uint16) TIFF_VARIABLE2) {
+				TIFFGetField(tif, fip->field_tag, &wc2, &fp);
+				dir->tdir_count = wc2;
+			} else {	/* Assume TIFF_VARIABLE */
+				TIFFGetField(tif, fip->field_tag, &wc, &fp);
+				dir->tdir_count = wc;
+			}
+			if (!TIFFWriteFloatArray(tif, dir, fp))
+				return 0;
+		} else {
+			if (wc == 1) {
+				float fv;
+				TIFFGetField(tif, fip->field_tag, &fv);
+				if (!TIFFWriteFloatArray(tif, dir, &fv))
+					return 0;
+			} else {
+				float* fp;
+				TIFFGetField(tif, fip->field_tag, &fp);
+				if (!TIFFWriteFloatArray(tif, dir, fp))
+					return 0;
+			}
+		}
+		break;
+	case TIFF_DOUBLE:
+		if (fip->field_passcount) {
+			double* dp;
+			if (wc == (uint16) TIFF_VARIABLE2) {
+				TIFFGetField(tif, fip->field_tag, &wc2, &dp);
+				dir->tdir_count = wc2;
+			} else {	/* Assume TIFF_VARIABLE */
+				TIFFGetField(tif, fip->field_tag, &wc, &dp);
+				dir->tdir_count = wc;
+			}
+			if (!TIFFWriteDoubleArray(tif, dir, dp))
+				return 0;
+		} else {
+			if (wc == 1) {
+				double dv;
+				TIFFGetField(tif, fip->field_tag, &dv);
+				if (!TIFFWriteDoubleArray(tif, dir, &dv))
+					return 0;
+			} else {
+				double* dp;
+				TIFFGetField(tif, fip->field_tag, &dp);
+				if (!TIFFWriteDoubleArray(tif, dir, dp))
+					return 0;
+			}
+		}
+		break;
+	case TIFF_ASCII:
+		{ 
+                    char* cp;
+                    if (fip->field_passcount)
+                        TIFFGetField(tif, fip->field_tag, &wc, &cp);
+                    else
+                        TIFFGetField(tif, fip->field_tag, &cp);
+
+                    dir->tdir_count = (uint32) (strlen(cp) + 1);
+                    if (!TIFFWriteByteArray(tif, dir, cp))
+                        return (0);
+		}
+		break;
+
+        case TIFF_BYTE:
+        case TIFF_SBYTE:          
+		if (fip->field_passcount) {
+			char* cp;
+			if (wc == (uint16) TIFF_VARIABLE2) {
+				TIFFGetField(tif, fip->field_tag, &wc2, &cp);
+				dir->tdir_count = wc2;
+			} else {	/* Assume TIFF_VARIABLE */
+				TIFFGetField(tif, fip->field_tag, &wc, &cp);
+				dir->tdir_count = wc;
+			}
+			if (!TIFFWriteByteArray(tif, dir, cp))
+				return 0;
+		} else {
+			if (wc == 1) {
+				char cv;
+				TIFFGetField(tif, fip->field_tag, &cv);
+				if (!TIFFWriteByteArray(tif, dir, &cv))
+					return 0;
+			} else {
+				char* cp;
+				TIFFGetField(tif, fip->field_tag, &cp);
+				if (!TIFFWriteByteArray(tif, dir, cp))
+					return 0;
+			}
+		}
+                break;
+
+	case TIFF_UNDEFINED:
+		{ char* cp;
+		  if (wc == (unsigned short) TIFF_VARIABLE) {
+			TIFFGetField(tif, fip->field_tag, &wc, &cp);
+			dir->tdir_count = wc;
+		  } else if (wc == (unsigned short) TIFF_VARIABLE2) {
+			TIFFGetField(tif, fip->field_tag, &wc2, &cp);
+			dir->tdir_count = wc2;
+		  } else 
+			TIFFGetField(tif, fip->field_tag, &cp);
+		  if (!TIFFWriteByteArray(tif, dir, cp))
+			return (0);
+		}
+		break;
+
+        case TIFF_NOTYPE:
+                break;
+	}
+	return (1);
+}
+
+/*
+ * Setup a directory entry with either a SHORT
+ * or LONG type according to the value.
+ */
+static void
+TIFFSetupShortLong(TIFF* tif, ttag_t tag, TIFFDirEntry* dir, uint32 v)
+{
+	dir->tdir_tag = (uint16) tag;
+	dir->tdir_count = 1;
+	if (v > 0xffffL) {
+		dir->tdir_type = (short) TIFF_LONG;
+		dir->tdir_offset = v;
+	} else {
+		dir->tdir_type = (short) TIFF_SHORT;
+		dir->tdir_offset = TIFFInsertData(tif, (int) TIFF_SHORT, v);
+	}
+}
+
+/*
+ * Setup a SHORT directory entry
+ */
+static void
+TIFFSetupShort(TIFF* tif, ttag_t tag, TIFFDirEntry* dir, uint16 v)
+{
+	dir->tdir_tag = (uint16) tag;
+	dir->tdir_count = 1;
+	dir->tdir_type = (short) TIFF_SHORT;
+	dir->tdir_offset = TIFFInsertData(tif, (int) TIFF_SHORT, v);
+}
+#undef MakeShortDirent
+
+#define	NITEMS(x)	(sizeof (x) / sizeof (x[0]))
+/*
+ * Setup a directory entry that references a
+ * samples/pixel array of SHORT values and
+ * (potentially) write the associated indirect
+ * values.
+ */
+static int
+TIFFWritePerSampleShorts(TIFF* tif, ttag_t tag, TIFFDirEntry* dir)
+{
+	uint16 buf[10], v;
+	uint16* w = buf;
+	uint16 i, samples = tif->tif_dir.td_samplesperpixel;
+	int status;
+
+	if (samples > NITEMS(buf)) {
+		w = (uint16*) _TIFFmalloc(samples * sizeof (uint16));
+		if (w == NULL) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "No space to write per-sample shorts");
+			return (0);
+		}
+	}
+	TIFFGetField(tif, tag, &v);
+	for (i = 0; i < samples; i++)
+		w[i] = v;
+	
+	dir->tdir_tag = (uint16) tag;
+	dir->tdir_type = (uint16) TIFF_SHORT;
+	dir->tdir_count = samples;
+	status = TIFFWriteShortArray(tif, dir, w);
+	if (w != buf)
+		_TIFFfree((char*) w);
+	return (status);
+}
+
+/*
+ * Setup a directory entry that references a samples/pixel array of ``type''
+ * values and (potentially) write the associated indirect values.  The source
+ * data from TIFFGetField() for the specified tag must be returned as double.
+ */
+static int
+TIFFWritePerSampleAnys(TIFF* tif,
+    TIFFDataType type, ttag_t tag, TIFFDirEntry* dir)
+{
+	double buf[10], v;
+	double* w = buf;
+	uint16 i, samples = tif->tif_dir.td_samplesperpixel;
+	int status;
+
+	if (samples > NITEMS(buf)) {
+		w = (double*) _TIFFmalloc(samples * sizeof (double));
+		if (w == NULL) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "No space to write per-sample values");
+			return (0);
+		}
+	}
+	TIFFGetField(tif, tag, &v);
+	for (i = 0; i < samples; i++)
+		w[i] = v;
+	status = TIFFWriteAnyArray(tif, type, tag, dir, samples, w);
+	if (w != buf)
+		_TIFFfree(w);
+	return (status);
+}
+#undef NITEMS
+
+/*
+ * Setup a pair of shorts that are returned by
+ * value, rather than as a reference to an array.
+ */
+static int
+TIFFSetupShortPair(TIFF* tif, ttag_t tag, TIFFDirEntry* dir)
+{
+	uint16 v[2];
+
+	TIFFGetField(tif, tag, &v[0], &v[1]);
+
+	dir->tdir_tag = (uint16) tag;
+	dir->tdir_type = (uint16) TIFF_SHORT;
+	dir->tdir_count = 2;
+	return (TIFFWriteShortArray(tif, dir, v));
+}
+
+/*
+ * Setup a directory entry for an NxM table of shorts,
+ * where M is known to be 2**bitspersample, and write
+ * the associated indirect data.
+ */
+static int
+TIFFWriteShortTable(TIFF* tif,
+    ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16** table)
+{
+	uint32 i, off;
+
+	dir->tdir_tag = (uint16) tag;
+	dir->tdir_type = (short) TIFF_SHORT;
+	/* XXX -- yech, fool TIFFWriteData */
+	dir->tdir_count = (uint32) (1L<<tif->tif_dir.td_bitspersample);
+	off = tif->tif_dataoff;
+	for (i = 0; i < n; i++)
+		if (!TIFFWriteData(tif, dir, (char *)table[i]))
+			return (0);
+	dir->tdir_count *= n;
+	dir->tdir_offset = off;
+	return (1);
+}
+
+/*
+ * Write/copy data associated with an ASCII or opaque tag value.
+ */
+static int
+TIFFWriteByteArray(TIFF* tif, TIFFDirEntry* dir, char* cp)
+{
+	if (dir->tdir_count > 4) {
+		if (!TIFFWriteData(tif, dir, cp))
+			return (0);
+	} else
+		_TIFFmemcpy(&dir->tdir_offset, cp, dir->tdir_count);
+	return (1);
+}
+
+/*
+ * Setup a directory entry of an array of SHORT
+ * or SSHORT and write the associated indirect values.
+ */
+static int
+TIFFWriteShortArray(TIFF* tif, TIFFDirEntry* dir, uint16* v)
+{
+	if (dir->tdir_count <= 2) {
+		if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
+			dir->tdir_offset = (uint32) ((long) v[0] << 16);
+			if (dir->tdir_count == 2)
+				dir->tdir_offset |= v[1] & 0xffff;
+		} else {
+			dir->tdir_offset = v[0] & 0xffff;
+			if (dir->tdir_count == 2)
+				dir->tdir_offset |= (long) v[1] << 16;
+		}
+		return (1);
+	} else
+		return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+/*
+ * Setup a directory entry of an array of LONG
+ * or SLONG and write the associated indirect values.
+ */
+static int
+TIFFWriteLongArray(TIFF* tif, TIFFDirEntry* dir, uint32* v)
+{
+	if (dir->tdir_count == 1) {
+		dir->tdir_offset = v[0];
+		return (1);
+	} else
+		return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+/*
+ * Setup a directory entry of an array of RATIONAL
+ * or SRATIONAL and write the associated indirect values.
+ */
+static int
+TIFFWriteRationalArray(TIFF* tif, TIFFDirEntry* dir, float* v)
+{
+	uint32 i;
+	uint32* t;
+	int status;
+
+	t = (uint32*) _TIFFmalloc(2 * dir->tdir_count * sizeof (uint32));
+	if (t == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "No space to write RATIONAL array");
+		return (0);
+	}
+	for (i = 0; i < dir->tdir_count; i++) {
+		float fv = v[i];
+		int sign = 1;
+		uint32 den;
+
+		if (fv < 0) {
+			if (dir->tdir_type == TIFF_RATIONAL) {
+				TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+	"\"%s\": Information lost writing value (%g) as (unsigned) RATIONAL",
+				_TIFFFieldWithTag(tif,dir->tdir_tag)->field_name,
+				fv);
+				fv = 0;
+			} else
+				fv = -fv, sign = -1;
+		}
+		den = 1L;
+		if (fv > 0) {
+			while (fv < 1L<<(31-3) && den < 1L<<(31-3))
+				fv *= 1<<3, den *= 1L<<3;
+		}
+		t[2*i+0] = (uint32) (sign * (fv + 0.5));
+		t[2*i+1] = den;
+	}
+	status = TIFFWriteData(tif, dir, (char *)t);
+	_TIFFfree((char*) t);
+	return (status);
+}
+
+static int
+TIFFWriteFloatArray(TIFF* tif, TIFFDirEntry* dir, float* v)
+{
+	TIFFCvtNativeToIEEEFloat(tif, dir->tdir_count, v);
+	if (dir->tdir_count == 1) {
+		dir->tdir_offset = *(uint32*) &v[0];
+		return (1);
+	} else
+		return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+static int
+TIFFWriteDoubleArray(TIFF* tif, TIFFDirEntry* dir, double* v)
+{
+	TIFFCvtNativeToIEEEDouble(tif, dir->tdir_count, v);
+	return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+/*
+ * Write an array of ``type'' values for a specified tag (i.e. this is a tag
+ * which is allowed to have different types, e.g. SMaxSampleType).
+ * Internally the data values are represented as double since a double can
+ * hold any of the TIFF tag types (yes, this should really be an abstract
+ * type tany_t for portability).  The data is converted into the specified
+ * type in a temporary buffer and then handed off to the appropriate array
+ * writer.
+ */
+static int
+TIFFWriteAnyArray(TIFF* tif,
+    TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v)
+{
+	char buf[10 * sizeof(double)];
+	char* w = buf;
+	int i, status = 0;
+
+	if (n * TIFFDataWidth(type) > sizeof buf) {
+		w = (char*) _TIFFmalloc(n * TIFFDataWidth(type));
+		if (w == NULL) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "No space to write array");
+			return (0);
+		}
+	}
+
+	dir->tdir_tag = (uint16) tag;
+	dir->tdir_type = (uint16) type;
+	dir->tdir_count = n;
+
+	switch (type) {
+	case TIFF_BYTE:
+		{ 
+			uint8* bp = (uint8*) w;
+			for (i = 0; i < (int) n; i++)
+				bp[i] = (uint8) v[i];
+			if (!TIFFWriteByteArray(tif, dir, (char*) bp))
+				goto out;
+		}
+		break;
+	case TIFF_SBYTE:
+		{ 
+			int8* bp = (int8*) w;
+			for (i = 0; i < (int) n; i++)
+				bp[i] = (int8) v[i];
+			if (!TIFFWriteByteArray(tif, dir, (char*) bp))
+				goto out;
+		}
+		break;
+	case TIFF_SHORT:
+		{
+			uint16* bp = (uint16*) w;
+			for (i = 0; i < (int) n; i++)
+				bp[i] = (uint16) v[i];
+			if (!TIFFWriteShortArray(tif, dir, (uint16*)bp))
+				goto out;
+		}
+		break;
+	case TIFF_SSHORT:
+		{ 
+			int16* bp = (int16*) w;
+			for (i = 0; i < (int) n; i++)
+				bp[i] = (int16) v[i];
+			if (!TIFFWriteShortArray(tif, dir, (uint16*)bp))
+				goto out;
+		}
+		break;
+	case TIFF_LONG:
+		{
+			uint32* bp = (uint32*) w;
+			for (i = 0; i < (int) n; i++)
+				bp[i] = (uint32) v[i];
+			if (!TIFFWriteLongArray(tif, dir, bp))
+				goto out;
+		}
+		break;
+	case TIFF_SLONG:
+		{
+			int32* bp = (int32*) w;
+			for (i = 0; i < (int) n; i++)
+				bp[i] = (int32) v[i];
+			if (!TIFFWriteLongArray(tif, dir, (uint32*) bp))
+				goto out;
+		}
+		break;
+	case TIFF_FLOAT:
+		{ 
+			float* bp = (float*) w;
+			for (i = 0; i < (int) n; i++)
+				bp[i] = (float) v[i];
+			if (!TIFFWriteFloatArray(tif, dir, bp))
+				goto out;
+		}
+		break;
+	case TIFF_DOUBLE:
+		return (TIFFWriteDoubleArray(tif, dir, v));
+	default:
+		/* TIFF_NOTYPE */
+		/* TIFF_ASCII */
+		/* TIFF_UNDEFINED */
+		/* TIFF_RATIONAL */
+		/* TIFF_SRATIONAL */
+		goto out;
+	}
+	status = 1;
+ out:
+	if (w != buf)
+		_TIFFfree(w);
+	return (status);
+}
+
+static int
+TIFFWriteTransferFunction(TIFF* tif, TIFFDirEntry* dir)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+	tsize_t n = (1L<<td->td_bitspersample) * sizeof (uint16);
+	uint16** tf = td->td_transferfunction;
+	int ncols;
+
+	/*
+	 * Check if the table can be written as a single column,
+	 * or if it must be written as 3 columns.  Note that we
+	 * write a 3-column tag if there are 2 samples/pixel and
+	 * a single column of data won't suffice--hmm.
+	 */
+	switch (td->td_samplesperpixel - td->td_extrasamples) {
+	default:	if (_TIFFmemcmp(tf[0], tf[2], n)) { ncols = 3; break; }
+	case 2:		if (_TIFFmemcmp(tf[0], tf[1], n)) { ncols = 3; break; }
+	case 1: case 0:	ncols = 1;
+	}
+	return (TIFFWriteShortTable(tif,
+	    TIFFTAG_TRANSFERFUNCTION, dir, ncols, tf));
+}
+
+static int
+TIFFWriteInkNames(TIFF* tif, TIFFDirEntry* dir)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+
+	dir->tdir_tag = TIFFTAG_INKNAMES;
+	dir->tdir_type = (short) TIFF_ASCII;
+	dir->tdir_count = td->td_inknameslen;
+	return (TIFFWriteByteArray(tif, dir, td->td_inknames));
+}
+
+/*
+ * Write a contiguous directory item.
+ */
+static int
+TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp)
+{
+	tsize_t cc;
+
+	if (tif->tif_flags & TIFF_SWAB) {
+		switch (dir->tdir_type) {
+		case TIFF_SHORT:
+		case TIFF_SSHORT:
+			TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
+			break;
+		case TIFF_LONG:
+		case TIFF_SLONG:
+		case TIFF_FLOAT:
+			TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
+			break;
+		case TIFF_RATIONAL:
+		case TIFF_SRATIONAL:
+			TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
+			break;
+		case TIFF_DOUBLE:
+			TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
+			break;
+		}
+	}
+	dir->tdir_offset = tif->tif_dataoff;
+	cc = dir->tdir_count * TIFFDataWidth((TIFFDataType) dir->tdir_type);
+	if (SeekOK(tif, dir->tdir_offset) &&
+	    WriteOK(tif, cp, cc)) {
+		tif->tif_dataoff += (cc + 1) & ~1;
+		return (1);
+	}
+	TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing data for field \"%s\"",
+	    _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
+	return (0);
+}
+
+/*
+ * Similar to TIFFWriteDirectory(), but if the directory has already
+ * been written once, it is relocated to the end of the file, in case it
+ * has changed in size.  Note that this will result in the loss of the 
+ * previously used directory space. 
+ */ 
+
+int 
+TIFFRewriteDirectory( TIFF *tif )
+{
+    static const char module[] = "TIFFRewriteDirectory";
+
+    /* We don't need to do anything special if it hasn't been written. */
+    if( tif->tif_diroff == 0 )
+        return TIFFWriteDirectory( tif );
+
+    /*
+    ** Find and zero the pointer to this directory, so that TIFFLinkDirectory
+    ** will cause it to be added after this directories current pre-link.
+    */
+    
+    /* Is it the first directory in the file? */
+    if (tif->tif_header.tiff_diroff == tif->tif_diroff) 
+    {
+        tif->tif_header.tiff_diroff = 0;
+        tif->tif_diroff = 0;
+
+        TIFFSeekFile(tif, (toff_t)(TIFF_MAGIC_SIZE+TIFF_VERSION_SIZE),
+		     SEEK_SET);
+        if (!WriteOK(tif, &(tif->tif_header.tiff_diroff), 
+                     sizeof (tif->tif_diroff))) 
+        {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error updating TIFF header");
+            return (0);
+        }
+    }
+    else
+    {
+        toff_t  nextdir, off;
+
+	nextdir = tif->tif_header.tiff_diroff;
+	do {
+		uint16 dircount;
+
+		if (!SeekOK(tif, nextdir) ||
+		    !ReadOK(tif, &dircount, sizeof (dircount))) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count");
+			return (0);
+		}
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabShort(&dircount);
+		(void) TIFFSeekFile(tif,
+		    dircount * sizeof (TIFFDirEntry), SEEK_CUR);
+		if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory link");
+			return (0);
+		}
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabLong(&nextdir);
+	} while (nextdir != tif->tif_diroff && nextdir != 0);
+        off = TIFFSeekFile(tif, 0, SEEK_CUR); /* get current offset */
+        (void) TIFFSeekFile(tif, off - (toff_t)sizeof(nextdir), SEEK_SET);
+        tif->tif_diroff = 0;
+	if (!WriteOK(tif, &(tif->tif_diroff), sizeof (nextdir))) {
+		TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
+		return (0);
+	}
+    }
+
+    /*
+    ** Now use TIFFWriteDirectory() normally.
+    */
+
+    return TIFFWriteDirectory( tif );
+}
+
+
+/*
+ * Link the current directory into the
+ * directory chain for the file.
+ */
+static int
+TIFFLinkDirectory(TIFF* tif)
+{
+	static const char module[] = "TIFFLinkDirectory";
+	toff_t nextdir;
+	toff_t diroff, off;
+
+	tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
+	diroff = tif->tif_diroff;
+	if (tif->tif_flags & TIFF_SWAB)
+		TIFFSwabLong(&diroff);
+
+	/*
+	 * Handle SubIFDs
+	 */
+        if (tif->tif_flags & TIFF_INSUBIFD) {
+		(void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
+		if (!WriteOK(tif, &diroff, sizeof (diroff))) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Error writing SubIFD directory link",
+			    tif->tif_name);
+			return (0);
+		}
+		/*
+		 * Advance to the next SubIFD or, if this is
+		 * the last one configured, revert back to the
+		 * normal directory linkage.
+		 */
+		if (--tif->tif_nsubifd)
+			tif->tif_subifdoff += sizeof (diroff);
+		else
+			tif->tif_flags &= ~TIFF_INSUBIFD;
+		return (1);
+	}
+
+	if (tif->tif_header.tiff_diroff == 0) {
+		/*
+		 * First directory, overwrite offset in header.
+		 */
+		tif->tif_header.tiff_diroff = tif->tif_diroff;
+		(void) TIFFSeekFile(tif,
+				    (toff_t)(TIFF_MAGIC_SIZE+TIFF_VERSION_SIZE),
+                                    SEEK_SET);
+		if (!WriteOK(tif, &diroff, sizeof (diroff))) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing TIFF header");
+			return (0);
+		}
+		return (1);
+	}
+	/*
+	 * Not the first directory, search to the last and append.
+	 */
+	nextdir = tif->tif_header.tiff_diroff;
+	do {
+		uint16 dircount;
+
+		if (!SeekOK(tif, nextdir) ||
+		    !ReadOK(tif, &dircount, sizeof (dircount))) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count");
+			return (0);
+		}
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabShort(&dircount);
+		(void) TIFFSeekFile(tif,
+		    dircount * sizeof (TIFFDirEntry), SEEK_CUR);
+		if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory link");
+			return (0);
+		}
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabLong(&nextdir);
+	} while (nextdir != 0);
+        off = TIFFSeekFile(tif, 0, SEEK_CUR); /* get current offset */
+        (void) TIFFSeekFile(tif, off - (toff_t)sizeof(nextdir), SEEK_SET);
+	if (!WriteOK(tif, &diroff, sizeof (diroff))) {
+		TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
+		return (0);
+	}
+	return (1);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_dumpmode.c b/src/libtiff/tif_dumpmode.c
new file mode 100644
index 0000000..d58a98b
--- /dev/null
+++ b/src/libtiff/tif_dumpmode.c
@@ -0,0 +1,117 @@
+/* $Header: /cvsroot/imtoolkit/im/src/libtiff/tif_dumpmode.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * "Null" Compression Algorithm Support.
+ */
+#include "tiffiop.h"
+
+/*
+ * Encode a hunk of pixels.
+ */
+static int
+DumpModeEncode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+	(void) s;
+	while (cc > 0) {
+		tsize_t n;
+
+		n = cc;
+		if (tif->tif_rawcc + n > tif->tif_rawdatasize)
+			n = tif->tif_rawdatasize - tif->tif_rawcc;
+
+                assert( n > 0 );
+                
+		/*
+		 * Avoid copy if client has setup raw
+		 * data buffer to avoid extra copy.
+		 */
+		if (tif->tif_rawcp != pp)
+			_TIFFmemcpy(tif->tif_rawcp, pp, n);
+		tif->tif_rawcp += n;
+		tif->tif_rawcc += n;
+		pp += n;
+		cc -= n;
+		if (tif->tif_rawcc >= tif->tif_rawdatasize &&
+		    !TIFFFlushData1(tif))
+			return (-1);
+	}
+	return (1);
+}
+
+/*
+ * Decode a hunk of pixels.
+ */
+static int
+DumpModeDecode(TIFF* tif, tidata_t buf, tsize_t cc, tsample_t s)
+{
+	(void) s;
+	if (tif->tif_rawcc < cc) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "DumpModeDecode: Not enough data for scanline %d",
+		    tif->tif_row);
+		return (0);
+	}
+	/*
+	 * Avoid copy if client has setup raw
+	 * data buffer to avoid extra copy.
+	 */
+	if (tif->tif_rawcp != buf)
+		_TIFFmemcpy(buf, tif->tif_rawcp, cc);
+	tif->tif_rawcp += cc;
+	tif->tif_rawcc -= cc;
+	return (1);
+}
+
+/*
+ * Seek forwards nrows in the current strip.
+ */
+static int
+DumpModeSeek(TIFF* tif, uint32 nrows)
+{
+	tif->tif_rawcp += nrows * tif->tif_scanlinesize;
+	tif->tif_rawcc -= nrows * tif->tif_scanlinesize;
+	return (1);
+}
+
+/*
+ * Initialize dump mode.
+ */
+int
+TIFFInitDumpMode(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	tif->tif_decoderow = DumpModeDecode;
+	tif->tif_decodestrip = DumpModeDecode;
+	tif->tif_decodetile = DumpModeDecode;
+	tif->tif_encoderow = DumpModeEncode;
+	tif->tif_encodestrip = DumpModeEncode;
+	tif->tif_encodetile = DumpModeEncode;
+	tif->tif_seek = DumpModeSeek;
+	return (1);
+}
diff --git a/src/libtiff/tif_error.c b/src/libtiff/tif_error.c
new file mode 100644
index 0000000..456e6f9
--- /dev/null
+++ b/src/libtiff/tif_error.c
@@ -0,0 +1,73 @@
+/* $Header: /cvsroot/imtoolkit/im/src/libtiff/tif_error.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#include "tiffiop.h"
+
+TIFFErrorHandlerExt _TIFFerrorHandlerExt = NULL;
+
+TIFFErrorHandler
+TIFFSetErrorHandler(TIFFErrorHandler handler)
+{
+	TIFFErrorHandler prev = _TIFFerrorHandler;
+	_TIFFerrorHandler = handler;
+	return (prev);
+}
+
+TIFFErrorHandlerExt
+TIFFSetErrorHandlerExt(TIFFErrorHandlerExt handler)
+{
+	TIFFErrorHandlerExt prev = _TIFFerrorHandlerExt;
+	_TIFFerrorHandlerExt = handler;
+	return (prev);
+}
+
+void
+TIFFError(const char* module, const char* fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	if (_TIFFerrorHandler)
+		(*_TIFFerrorHandler)(module, fmt, ap);
+	if (_TIFFerrorHandlerExt)
+		(*_TIFFerrorHandlerExt)(0, module, fmt, ap);
+	va_end(ap);
+}
+
+void
+TIFFErrorExt(thandle_t fd, const char* module, const char* fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	if (_TIFFerrorHandler)
+		(*_TIFFerrorHandler)(module, fmt, ap);
+	if (_TIFFerrorHandlerExt)
+		(*_TIFFerrorHandlerExt)(fd, module, fmt, ap);
+	va_end(ap);
+}
+
diff --git a/src/libtiff/tif_extension.c b/src/libtiff/tif_extension.c
new file mode 100644
index 0000000..0d32a07
--- /dev/null
+++ b/src/libtiff/tif_extension.c
@@ -0,0 +1,111 @@
+/* $Header: /cvsroot/imtoolkit/im/src/libtiff/tif_extension.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Various routines support external extension of the tag set, and other
+ * application extension capabilities. 
+ */
+
+#include "tiffiop.h"
+
+int TIFFGetTagListCount( TIFF *tif )
+
+{
+    TIFFDirectory* td = &tif->tif_dir;
+    
+    return td->td_customValueCount;
+}
+
+ttag_t TIFFGetTagListEntry( TIFF *tif, int tag_index )
+
+{
+    TIFFDirectory* td = &tif->tif_dir;
+
+    if( tag_index < 0 || tag_index >= td->td_customValueCount )
+        return (ttag_t) -1;
+    else
+        return td->td_customValues[tag_index].info->field_tag;
+}
+
+/*
+** This provides read/write access to the TIFFTagMethods within the TIFF
+** structure to application code without giving access to the private
+** TIFF structure.
+*/
+TIFFTagMethods *TIFFAccessTagMethods( TIFF *tif )
+
+{
+    return &(tif->tif_tagmethods);
+}
+
+void *TIFFGetClientInfo( TIFF *tif, const char *name )
+
+{
+    TIFFClientInfoLink *link = tif->tif_clientinfo;
+
+    while( link != NULL && strcmp(link->name,name) != 0 )
+        link = link->next;
+
+    if( link != NULL )
+        return link->data;
+    else
+        return NULL;
+}
+
+void TIFFSetClientInfo( TIFF *tif, void *data, const char *name )
+
+{
+    TIFFClientInfoLink *link = tif->tif_clientinfo;
+
+    /*
+    ** Do we have an existing link with this name?  If so, just
+    ** set it.
+    */
+    while( link != NULL && strcmp(link->name,name) != 0 )
+        link = link->next;
+
+    if( link != NULL )
+    {
+        link->data = data;
+        return;
+    }
+
+    /*
+    ** Create a new link.
+    */
+
+    link = (TIFFClientInfoLink *) _TIFFmalloc(sizeof(TIFFClientInfoLink));
+    assert (link != NULL);
+    link->next = tif->tif_clientinfo;
+    link->name = (char *) _TIFFmalloc(strlen(name)+1);
+    assert (link->name != NULL);
+    strcpy(link->name, name);
+    link->data = data;
+
+    tif->tif_clientinfo = link;
+}
diff --git a/src/libtiff/tif_fax3.c b/src/libtiff/tif_fax3.c
new file mode 100644
index 0000000..96f5d13
--- /dev/null
+++ b/src/libtiff/tif_fax3.c
@@ -0,0 +1,1566 @@
+/* $Id: tif_fax3.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1990-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef CCITT_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * CCITT Group 3 (T.4) and Group 4 (T.6) Compression Support.
+ *
+ * This file contains support for decoding and encoding TIFF
+ * compression algorithms 2, 3, 4, and 32771.
+ *
+ * Decoder support is derived, with permission, from the code
+ * in Frank Cringle's viewfax program;
+ *      Copyright (C) 1990, 1995  Frank D. Cringle.
+ */
+#include "tif_fax3.h"
+#define	G3CODES
+#include "t4.h"
+#include <stdio.h>
+
+/*
+ * Compression+decompression state blocks are
+ * derived from this ``base state'' block.
+ */
+typedef struct {
+        int     rw_mode;                /* O_RDONLY for decode, else encode */
+	int	mode;			/* operating mode */
+	uint32	rowbytes;		/* bytes in a decoded scanline */
+	uint32	rowpixels;		/* pixels in a scanline */
+
+	uint16	cleanfaxdata;		/* CleanFaxData tag */
+	uint32	badfaxrun;		/* BadFaxRun tag */
+	uint32	badfaxlines;		/* BadFaxLines tag */
+	uint32	groupoptions;		/* Group 3/4 options tag */
+	uint32	recvparams;		/* encoded Class 2 session params */
+	char*	subaddress;		/* subaddress string */
+	uint32	recvtime;		/* time spent receiving (secs) */
+	char*	faxdcs;			/* Table 2/T.30 encoded session params */
+	TIFFVGetMethod vgetparent;	/* super-class method */
+	TIFFVSetMethod vsetparent;	/* super-class method */
+} Fax3BaseState;
+#define	Fax3State(tif)		((Fax3BaseState*) (tif)->tif_data)
+
+typedef enum { G3_1D, G3_2D } Ttag;
+typedef struct {
+	Fax3BaseState b;
+
+	/* Decoder state info */
+	const unsigned char* bitmap;	/* bit reversal table */
+	uint32	data;			/* current i/o byte/word */
+	int	bit;			/* current i/o bit in byte */
+	int	EOLcnt;			/* count of EOL codes recognized */
+	TIFFFaxFillFunc fill;		/* fill routine */
+	uint32*	runs;			/* b&w runs for current/previous row */
+	uint32*	refruns;		/* runs for reference line */
+	uint32*	curruns;		/* runs for current line */
+
+	/* Encoder state info */
+	Ttag    tag;			/* encoding state */
+	unsigned char*	refline;	/* reference line for 2d decoding */
+	int	k;			/* #rows left that can be 2d encoded */
+	int	maxk;			/* max #rows that can be 2d encoded */
+} Fax3CodecState;
+#define	DecoderState(tif)	((Fax3CodecState*) Fax3State(tif))
+#define	EncoderState(tif)	((Fax3CodecState*) Fax3State(tif))
+
+#define	is2DEncoding(sp) \
+	(sp->b.groupoptions & GROUP3OPT_2DENCODING)
+#define	isAligned(p,t)	((((unsigned long)(p)) & (sizeof (t)-1)) == 0)
+
+/*
+ * Group 3 and Group 4 Decoding.
+ */
+
+/*
+ * These macros glue the TIFF library state to
+ * the state expected by Frank's decoder.
+ */
+#define	DECLARE_STATE(tif, sp, mod)					\
+    static const char module[] = mod;					\
+    Fax3CodecState* sp = DecoderState(tif);				\
+    int a0;				/* reference element */		\
+    int lastx = sp->b.rowpixels;	/* last element in row */	\
+    uint32 BitAcc;			/* bit accumulator */		\
+    int BitsAvail;			/* # valid bits in BitAcc */	\
+    int RunLength;			/* length of current run */	\
+    unsigned char* cp;			/* next byte of input data */	\
+    unsigned char* ep;			/* end of input data */		\
+    uint32* pa;				/* place to stuff next run */	\
+    uint32* thisrun;			/* current row's run array */	\
+    int EOLcnt;				/* # EOL codes recognized */	\
+    const unsigned char* bitmap = sp->bitmap;	/* input data bit reverser */	\
+    const TIFFFaxTabEnt* TabEnt
+#define	DECLARE_STATE_2D(tif, sp, mod)					\
+    DECLARE_STATE(tif, sp, mod);					\
+    int b1;				/* next change on prev line */	\
+    uint32* pb				/* next run in reference line */\
+/*
+ * Load any state that may be changed during decoding.
+ */
+#define	CACHE_STATE(tif, sp) do {					\
+    BitAcc = sp->data;							\
+    BitsAvail = sp->bit;						\
+    EOLcnt = sp->EOLcnt;						\
+    cp = (unsigned char*) tif->tif_rawcp;				\
+    ep = cp + tif->tif_rawcc;						\
+} while (0)
+/*
+ * Save state possibly changed during decoding.
+ */
+#define	UNCACHE_STATE(tif, sp) do {					\
+    sp->bit = BitsAvail;						\
+    sp->data = BitAcc;							\
+    sp->EOLcnt = EOLcnt;						\
+    tif->tif_rawcc -= (tidata_t) cp - tif->tif_rawcp;			\
+    tif->tif_rawcp = (tidata_t) cp;					\
+} while (0)
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+Fax3PreDecode(TIFF* tif, tsample_t s)
+{
+	Fax3CodecState* sp = DecoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	sp->bit = 0;			/* force initial read */
+	sp->data = 0;
+	sp->EOLcnt = 0;			/* force initial scan for EOL */
+	/*
+	 * Decoder assumes lsb-to-msb bit order.  Note that we select
+	 * this here rather than in Fax3SetupState so that viewers can
+	 * hold the image open, fiddle with the FillOrder tag value,
+	 * and then re-decode the image.  Otherwise they'd need to close
+	 * and open the image to get the state reset.
+	 */
+	sp->bitmap =
+	    TIFFGetBitRevTable(tif->tif_dir.td_fillorder != FILLORDER_LSB2MSB);
+	if (sp->refruns) {		/* init reference line to white */
+		sp->refruns[0] = (uint32) sp->b.rowpixels;
+		sp->refruns[1] = 0;
+	}
+	return (1);
+}
+
+/*
+ * Routine for handling various errors/conditions.
+ * Note how they are "glued into the decoder" by
+ * overriding the definitions used by the decoder.
+ */
+
+static void
+Fax3Unexpected(const char* module, TIFF* tif, uint32 line, uint32 a0)
+{
+	TIFFErrorExt(tif->tif_clientdata, module, "%s: Bad code word at line %lu of %s %lu (x %lu)",
+		tif->tif_name, (unsigned long) line, isTiled(tif) ? "tile" : "strip",
+	   (unsigned long) (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+	   (unsigned long) a0);
+}
+#define	unexpected(table, a0)	Fax3Unexpected(module, tif, line, a0)
+
+static void
+Fax3Extension(const char* module, TIFF* tif, uint32 line, uint32 a0)
+{
+	TIFFErrorExt(tif->tif_clientdata, module,
+	    "%s: Uncompressed data (not supported) at line %lu of %s %lu (x %lu)",
+	    tif->tif_name, (unsigned long) line, isTiled(tif) ? "tile" : "strip",
+       (unsigned long) (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+       (unsigned long) a0);
+}
+#define	extension(a0)	Fax3Extension(module, tif, line, a0)
+
+static void
+Fax3BadLength(const char* module, TIFF* tif, uint32 line, uint32 a0, uint32 lastx)
+{
+	TIFFWarningExt(tif->tif_clientdata, module, "%s: %s at line %lu of %s %lu (got %lu, expected %lu)",
+	    tif->tif_name,
+	    a0 < lastx ? "Premature EOL" : "Line length mismatch",
+	    (unsigned long) line, isTiled(tif) ? "tile" : "strip",
+        (unsigned long) (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+        (unsigned long) a0, lastx);
+}
+#define	badlength(a0,lastx)	Fax3BadLength(module, tif, line, a0, lastx)
+
+static void
+Fax3PrematureEOF(const char* module, TIFF* tif, uint32 line, uint32 a0)
+{
+	TIFFWarningExt(tif->tif_clientdata, module, "%s: Premature EOF at line %lu of %s %lu (x %lu)",
+	    tif->tif_name,
+	    (unsigned long) line, isTiled(tif) ? "tile" : "strip",
+        (unsigned long) (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip),
+        (unsigned long) a0);
+}
+#define	prematureEOF(a0)	Fax3PrematureEOF(module, tif, line, a0)
+
+#define	Nop
+
+/*
+ * Decode the requested amount of G3 1D-encoded data.
+ */
+static int
+Fax3Decode1D(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s)
+{
+	DECLARE_STATE(tif, sp, "Fax3Decode1D");
+        int line = 0;
+
+	(void) s;
+	CACHE_STATE(tif, sp);
+	thisrun = sp->curruns;
+	while ((long)occ > 0) {
+		a0 = 0;
+		RunLength = 0;
+		pa = thisrun;
+#ifdef FAX3_DEBUG
+		printf("\nBitAcc=%08X, BitsAvail = %d\n", BitAcc, BitsAvail);
+		printf("-------------------- %d\n", tif->tif_row);
+		fflush(stdout);
+#endif
+		SYNC_EOL(EOF1D);
+		EXPAND1D(EOF1Da);
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		buf += sp->b.rowbytes;
+		occ -= sp->b.rowbytes;
+                line++;
+		continue;
+	EOF1D:				/* premature EOF */
+		CLEANUP_RUNS();
+	EOF1Da:				/* premature EOF */
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		UNCACHE_STATE(tif, sp);
+		return (-1);
+	}
+	UNCACHE_STATE(tif, sp);
+	return (1);
+}
+
+#define	SWAP(t,a,b)	{ t x; x = (a); (a) = (b); (b) = x; }
+/*
+ * Decode the requested amount of G3 2D-encoded data.
+ */
+static int
+Fax3Decode2D(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s)
+{
+	DECLARE_STATE_2D(tif, sp, "Fax3Decode2D");
+        int line = 0;
+	int is1D;			/* current line is 1d/2d-encoded */
+
+	(void) s;
+	CACHE_STATE(tif, sp);
+	while ((long)occ > 0) {
+		a0 = 0;
+		RunLength = 0;
+		pa = thisrun = sp->curruns;
+#ifdef FAX3_DEBUG
+		printf("\nBitAcc=%08X, BitsAvail = %d EOLcnt = %d",
+		    BitAcc, BitsAvail, EOLcnt);
+#endif
+		SYNC_EOL(EOF2D);
+		NeedBits8(1, EOF2D);
+		is1D = GetBits(1);	/* 1D/2D-encoding tag bit */
+		ClrBits(1);
+#ifdef FAX3_DEBUG
+		printf(" %s\n-------------------- %d\n",
+		    is1D ? "1D" : "2D", tif->tif_row);
+		fflush(stdout);
+#endif
+		pb = sp->refruns;
+		b1 = *pb++;
+		if (is1D)
+			EXPAND1D(EOF2Da);
+		else
+			EXPAND2D(EOF2Da);
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		SETVALUE(0);		/* imaginary change for reference */
+		SWAP(uint32*, sp->curruns, sp->refruns);
+		buf += sp->b.rowbytes;
+		occ -= sp->b.rowbytes;
+                line++;
+		continue;
+	EOF2D:				/* premature EOF */
+		CLEANUP_RUNS();
+	EOF2Da:				/* premature EOF */
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		UNCACHE_STATE(tif, sp);
+		return (-1);
+	}
+	UNCACHE_STATE(tif, sp);
+	return (1);
+}
+#undef SWAP
+
+/*
+ * The ZERO & FILL macros must handle spans < 2*sizeof(long) bytes.
+ * For machines with 64-bit longs this is <16 bytes; otherwise
+ * this is <8 bytes.  We optimize the code here to reflect the
+ * machine characteristics.
+ */
+#if SIZEOF_LONG == 8
+# define FILL(n, cp)							    \
+    switch (n) {							    \
+    case 15:(cp)[14] = 0xff; case 14:(cp)[13] = 0xff; case 13: (cp)[12] = 0xff;\
+    case 12:(cp)[11] = 0xff; case 11:(cp)[10] = 0xff; case 10: (cp)[9] = 0xff;\
+    case  9: (cp)[8] = 0xff; case  8: (cp)[7] = 0xff; case  7: (cp)[6] = 0xff;\
+    case  6: (cp)[5] = 0xff; case  5: (cp)[4] = 0xff; case  4: (cp)[3] = 0xff;\
+    case  3: (cp)[2] = 0xff; case  2: (cp)[1] = 0xff;			      \
+    case  1: (cp)[0] = 0xff; (cp) += (n); case 0:  ;			      \
+    }
+# define ZERO(n, cp)							\
+    switch (n) {							\
+    case 15:(cp)[14] = 0; case 14:(cp)[13] = 0; case 13: (cp)[12] = 0;	\
+    case 12:(cp)[11] = 0; case 11:(cp)[10] = 0; case 10: (cp)[9] = 0;	\
+    case  9: (cp)[8] = 0; case  8: (cp)[7] = 0; case  7: (cp)[6] = 0;	\
+    case  6: (cp)[5] = 0; case  5: (cp)[4] = 0; case  4: (cp)[3] = 0;	\
+    case  3: (cp)[2] = 0; case  2: (cp)[1] = 0;				\
+    case  1: (cp)[0] = 0; (cp) += (n); case 0:  ;			\
+    }
+#else
+# define FILL(n, cp)							    \
+    switch (n) {							    \
+    case 7: (cp)[6] = 0xff; case 6: (cp)[5] = 0xff; case 5: (cp)[4] = 0xff; \
+    case 4: (cp)[3] = 0xff; case 3: (cp)[2] = 0xff; case 2: (cp)[1] = 0xff; \
+    case 1: (cp)[0] = 0xff; (cp) += (n); case 0:  ;			    \
+    }
+# define ZERO(n, cp)							\
+    switch (n) {							\
+    case 7: (cp)[6] = 0; case 6: (cp)[5] = 0; case 5: (cp)[4] = 0;	\
+    case 4: (cp)[3] = 0; case 3: (cp)[2] = 0; case 2: (cp)[1] = 0;	\
+    case 1: (cp)[0] = 0; (cp) += (n); case 0:  ;			\
+    }
+#endif
+
+/*
+ * Bit-fill a row according to the white/black
+ * runs generated during G3/G4 decoding.
+ */
+void
+_TIFFFax3fillruns(unsigned char* buf, uint32* runs, uint32* erun, uint32 lastx)
+{
+	static const unsigned char _fillmasks[] =
+	    { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff };
+	unsigned char* cp;
+	uint32 x, bx, run;
+	int32 n, nw;
+	long* lp;
+
+	if ((erun-runs)&1)
+	    *erun++ = 0;
+	x = 0;
+	for (; runs < erun; runs += 2) {
+	    run = runs[0];
+	    if (x+run > lastx || run > lastx )
+		run = runs[0] = (uint32) (lastx - x);
+	    if (run) {
+		cp = buf + (x>>3);
+		bx = x&7;
+		if (run > 8-bx) {
+		    if (bx) {			/* align to byte boundary */
+			*cp++ &= 0xff << (8-bx);
+			run -= 8-bx;
+		    }
+		    if( (n = run >> 3) != 0 ) {	/* multiple bytes to fill */
+			if ((n/sizeof (long)) > 1) {
+			    /*
+			     * Align to longword boundary and fill.
+			     */
+			    for (; n && !isAligned(cp, long); n--)
+				    *cp++ = 0x00;
+			    lp = (long*) cp;
+			    nw = (int32)(n / sizeof (long));
+			    n -= nw * sizeof (long);
+			    do {
+				    *lp++ = 0L;
+			    } while (--nw);
+			    cp = (unsigned char*) lp;
+			}
+			ZERO(n, cp);
+			run &= 7;
+		    }
+		    if (run)
+			cp[0] &= 0xff >> run;
+		} else
+		    cp[0] &= ~(_fillmasks[run]>>bx);
+		x += runs[0];
+	    }
+	    run = runs[1];
+	    if (x+run > lastx || run > lastx )
+		run = runs[1] = lastx - x;
+	    if (run) {
+		cp = buf + (x>>3);
+		bx = x&7;
+		if (run > 8-bx) {
+		    if (bx) {			/* align to byte boundary */
+			*cp++ |= 0xff >> bx;
+			run -= 8-bx;
+		    }
+		    if( (n = run>>3) != 0 ) {	/* multiple bytes to fill */
+			if ((n/sizeof (long)) > 1) {
+			    /*
+			     * Align to longword boundary and fill.
+			     */
+			    for (; n && !isAligned(cp, long); n--)
+				*cp++ = 0xff;
+			    lp = (long*) cp;
+			    nw = (int32)(n / sizeof (long));
+			    n -= nw * sizeof (long);
+			    do {
+				*lp++ = -1L;
+			    } while (--nw);
+			    cp = (unsigned char*) lp;
+			}
+			FILL(n, cp);
+			run &= 7;
+		    }
+		    if (run)
+			cp[0] |= 0xff00 >> run;
+		} else
+		    cp[0] |= _fillmasks[run]>>bx;
+		x += runs[1];
+	    }
+	}
+	assert(x == lastx);
+}
+#undef	ZERO
+#undef	FILL
+
+/*
+ * Setup G3/G4-related compression/decompression state
+ * before data is processed.  This routine is called once
+ * per image -- it sets up different state based on whether
+ * or not decoding or encoding is being done and whether
+ * 1D- or 2D-encoded data is involved.
+ */
+static int
+Fax3SetupState(TIFF* tif)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+	Fax3BaseState* sp = Fax3State(tif);
+	int needsRefLine;
+	Fax3CodecState* dsp = (Fax3CodecState*) Fax3State(tif);
+	uint32 rowbytes, rowpixels, nruns;
+
+	if (td->td_bitspersample != 1) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "Bits/sample must be 1 for Group 3/4 encoding/decoding");
+		return (0);
+	}
+	/*
+	 * Calculate the scanline/tile widths.
+	 */
+	if (isTiled(tif)) {
+		rowbytes = TIFFTileRowSize(tif);
+		rowpixels = td->td_tilewidth;
+	} else {
+		rowbytes = TIFFScanlineSize(tif);
+		rowpixels = td->td_imagewidth;
+	}
+	sp->rowbytes = (uint32) rowbytes;
+	sp->rowpixels = (uint32) rowpixels;
+	/*
+	 * Allocate any additional space required for decoding/encoding.
+	 */
+	needsRefLine = (
+	    (sp->groupoptions & GROUP3OPT_2DENCODING) ||
+	    td->td_compression == COMPRESSION_CCITTFAX4
+	);
+
+	nruns = needsRefLine ? 2*TIFFroundup(rowpixels,32) : rowpixels;
+
+	dsp->runs = (uint32*) _TIFFCheckMalloc(tif, 2*nruns+3, sizeof (uint32),
+					  "for Group 3/4 run arrays");
+	if (dsp->runs == NULL)
+		return (0);
+	dsp->curruns = dsp->runs;
+	if (needsRefLine)
+		dsp->refruns = dsp->runs + (nruns>>1);
+	else
+		dsp->refruns = NULL;
+	if (td->td_compression == COMPRESSION_CCITTFAX3
+	    && is2DEncoding(dsp)) {	/* NB: default is 1D routine */
+		tif->tif_decoderow = Fax3Decode2D;
+		tif->tif_decodestrip = Fax3Decode2D;
+		tif->tif_decodetile = Fax3Decode2D;
+	}
+
+	if (needsRefLine) {		/* 2d encoding */
+		Fax3CodecState* esp = EncoderState(tif);
+		/*
+		 * 2d encoding requires a scanline
+		 * buffer for the ``reference line''; the
+		 * scanline against which delta encoding
+		 * is referenced.  The reference line must
+		 * be initialized to be ``white'' (done elsewhere).
+		 */
+		esp->refline = (unsigned char*) _TIFFmalloc(rowbytes);
+		if (esp->refline == NULL) {
+			TIFFErrorExt(tif->tif_clientdata, "Fax3SetupState",
+			    "%s: No space for Group 3/4 reference line",
+			    tif->tif_name);
+			return (0);
+		}
+	} else					/* 1d encoding */
+		EncoderState(tif)->refline = NULL;
+
+	return (1);
+}
+
+/*
+ * CCITT Group 3 FAX Encoding.
+ */
+
+#define	Fax3FlushBits(tif, sp) {				\
+	if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize)		\
+		(void) TIFFFlushData1(tif);			\
+	*(tif)->tif_rawcp++ = (tidataval_t) (sp)->data;		\
+	(tif)->tif_rawcc++;					\
+	(sp)->data = 0, (sp)->bit = 8;				\
+}
+#define	_FlushBits(tif) {					\
+	if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize)		\
+		(void) TIFFFlushData1(tif);			\
+	*(tif)->tif_rawcp++ = (tidataval_t) data;		\
+	(tif)->tif_rawcc++;					\
+	data = 0, bit = 8;					\
+}
+static const int _msbmask[9] =
+    { 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
+#define	_PutBits(tif, bits, length) {				\
+	while (length > bit) {					\
+		data |= bits >> (length - bit);			\
+		length -= bit;					\
+		_FlushBits(tif);				\
+	}							\
+	data |= (bits & _msbmask[length]) << (bit - length);	\
+	bit -= length;						\
+	if (bit == 0)						\
+		_FlushBits(tif);				\
+}
+	
+/*
+ * Write a variable-length bit-value to
+ * the output stream.  Values are
+ * assumed to be at most 16 bits.
+ */
+static void
+Fax3PutBits(TIFF* tif, unsigned int bits, unsigned int length)
+{
+	Fax3CodecState* sp = EncoderState(tif);
+	unsigned int bit = sp->bit;
+	int data = sp->data;
+
+	_PutBits(tif, bits, length);
+
+	sp->data = data;
+	sp->bit = bit;
+}
+
+/*
+ * Write a code to the output stream.
+ */
+#define putcode(tif, te)	Fax3PutBits(tif, (te)->code, (te)->length)
+
+#ifdef FAX3_DEBUG
+#define	DEBUG_COLOR(w) (tab == TIFFFaxWhiteCodes ? w "W" : w "B")
+#define	DEBUG_PRINT(what,len) {						\
+    int t;								\
+    printf("%08X/%-2d: %s%5d\t", data, bit, DEBUG_COLOR(what), len);	\
+    for (t = length-1; t >= 0; t--)					\
+	putchar(code & (1<<t) ? '1' : '0');				\
+    putchar('\n');							\
+}
+#endif
+
+/*
+ * Write the sequence of codes that describes
+ * the specified span of zero's or one's.  The
+ * appropriate table that holds the make-up and
+ * terminating codes is supplied.
+ */
+static void
+putspan(TIFF* tif, int32 span, const tableentry* tab)
+{
+	Fax3CodecState* sp = EncoderState(tif);
+	unsigned int bit = sp->bit;
+	int data = sp->data;
+	unsigned int code, length;
+
+	while (span >= 2624) {
+		const tableentry* te = &tab[63 + (2560>>6)];
+		code = te->code, length = te->length;
+#ifdef FAX3_DEBUG
+		DEBUG_PRINT("MakeUp", te->runlen);
+#endif
+		_PutBits(tif, code, length);
+		span -= te->runlen;
+	}
+	if (span >= 64) {
+		const tableentry* te = &tab[63 + (span>>6)];
+		assert(te->runlen == 64*(span>>6));
+		code = te->code, length = te->length;
+#ifdef FAX3_DEBUG
+		DEBUG_PRINT("MakeUp", te->runlen);
+#endif
+		_PutBits(tif, code, length);
+		span -= te->runlen;
+	}
+	code = tab[span].code, length = tab[span].length;
+#ifdef FAX3_DEBUG
+	DEBUG_PRINT("  Term", tab[span].runlen);
+#endif
+	_PutBits(tif, code, length);
+
+	sp->data = data;
+	sp->bit = bit;
+}
+
+/*
+ * Write an EOL code to the output stream.  The zero-fill
+ * logic for byte-aligning encoded scanlines is handled
+ * here.  We also handle writing the tag bit for the next
+ * scanline when doing 2d encoding.
+ */
+static void
+Fax3PutEOL(TIFF* tif)
+{
+	Fax3CodecState* sp = EncoderState(tif);
+	unsigned int bit = sp->bit;
+	int data = sp->data;
+	unsigned int code, length, tparm;
+
+	if (sp->b.groupoptions & GROUP3OPT_FILLBITS) {
+		/*
+		 * Force bit alignment so EOL will terminate on
+		 * a byte boundary.  That is, force the bit alignment
+		 * to 16-12 = 4 before putting out the EOL code.
+		 */
+		int align = 8 - 4;
+		if (align != sp->bit) {
+			if (align > sp->bit)
+				align = sp->bit + (8 - align);
+			else
+				align = sp->bit - align;
+			code = 0;
+			tparm=align; 
+			_PutBits(tif, 0, tparm);
+		}
+	}
+	code = EOL, length = 12;
+	if (is2DEncoding(sp))
+		code = (code<<1) | (sp->tag == G3_1D), length++;
+	_PutBits(tif, code, length);
+
+	sp->data = data;
+	sp->bit = bit;
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+Fax3PreEncode(TIFF* tif, tsample_t s)
+{
+	Fax3CodecState* sp = EncoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	sp->bit = 8;
+	sp->data = 0;
+	sp->tag = G3_1D;
+	/*
+	 * This is necessary for Group 4; otherwise it isn't
+	 * needed because the first scanline of each strip ends
+	 * up being copied into the refline.
+	 */
+	if (sp->refline)
+		_TIFFmemset(sp->refline, 0x00, sp->b.rowbytes);
+	if (is2DEncoding(sp)) {
+		float res = tif->tif_dir.td_yresolution;
+		/*
+		 * The CCITT spec says that when doing 2d encoding, you
+		 * should only do it on K consecutive scanlines, where K
+		 * depends on the resolution of the image being encoded
+		 * (2 for <= 200 lpi, 4 for > 200 lpi).  Since the directory
+		 * code initializes td_yresolution to 0, this code will
+		 * select a K of 2 unless the YResolution tag is set
+		 * appropriately.  (Note also that we fudge a little here
+		 * and use 150 lpi to avoid problems with units conversion.)
+		 */
+		if (tif->tif_dir.td_resolutionunit == RESUNIT_CENTIMETER)
+			res *= 2.54f;		/* convert to inches */
+		sp->maxk = (res > 150 ? 4 : 2);
+		sp->k = sp->maxk-1;
+	} else
+		sp->k = sp->maxk = 0;
+	return (1);
+}
+
+static const unsigned char zeroruns[256] = {
+    8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,	/* 0x00 - 0x0f */
+    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	/* 0x10 - 0x1f */
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0x20 - 0x2f */
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0x30 - 0x3f */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x40 - 0x4f */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x50 - 0x5f */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x60 - 0x6f */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x70 - 0x7f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x80 - 0x8f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x90 - 0x9f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xa0 - 0xaf */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xb0 - 0xbf */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xc0 - 0xcf */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xd0 - 0xdf */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xe0 - 0xef */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0xf0 - 0xff */
+};
+static const unsigned char oneruns[256] = {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x00 - 0x0f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x10 - 0x1f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x20 - 0x2f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x30 - 0x3f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x40 - 0x4f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x50 - 0x5f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x60 - 0x6f */
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	/* 0x70 - 0x7f */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x80 - 0x8f */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0x90 - 0x9f */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0xa0 - 0xaf */
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	/* 0xb0 - 0xbf */
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0xc0 - 0xcf */
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	/* 0xd0 - 0xdf */
+    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	/* 0xe0 - 0xef */
+    4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8,	/* 0xf0 - 0xff */
+};
+
+/*
+ * On certain systems it pays to inline
+ * the routines that find pixel spans.
+ */
+#ifdef VAXC
+static	int32 find0span(unsigned char*, int32, int32);
+static	int32 find1span(unsigned char*, int32, int32);
+#pragma inline(find0span,find1span)
+#endif
+
+/*
+ * Find a span of ones or zeros using the supplied
+ * table.  The ``base'' of the bit string is supplied
+ * along with the start+end bit indices.
+ */
+inline static int32
+find0span(unsigned char* bp, int32 bs, int32 be)
+{
+	int32 bits = be - bs;
+	int32 n, span;
+
+	bp += bs>>3;
+	/*
+	 * Check partial byte on lhs.
+	 */
+	if (bits > 0 && (n = (bs & 7))) {
+		span = zeroruns[(*bp << n) & 0xff];
+		if (span > 8-n)		/* table value too generous */
+			span = 8-n;
+		if (span > bits)	/* constrain span to bit range */
+			span = bits;
+		if (n+span < 8)		/* doesn't extend to edge of byte */
+			return (span);
+		bits -= span;
+		bp++;
+	} else
+		span = 0;
+	if (bits >= (int32)(2 * 8 * sizeof(long))) {
+		long* lp;
+		/*
+		 * Align to longword boundary and check longwords.
+		 */
+		while (!isAligned(bp, long)) {
+			if (*bp != 0x00)
+				return (span + zeroruns[*bp]);
+			span += 8, bits -= 8;
+			bp++;
+		}
+		lp = (long*) bp;
+		while ((bits >= (int32)(8 * sizeof(long))) && (0 == *lp)) {
+			span += 8*sizeof (long), bits -= 8*sizeof (long);
+			lp++;
+		}
+		bp = (unsigned char*) lp;
+	}
+	/*
+	 * Scan full bytes for all 0's.
+	 */
+	while (bits >= 8) {
+		if (*bp != 0x00)	/* end of run */
+			return (span + zeroruns[*bp]);
+		span += 8, bits -= 8;
+		bp++;
+	}
+	/*
+	 * Check partial byte on rhs.
+	 */
+	if (bits > 0) {
+		n = zeroruns[*bp];
+		span += (n > bits ? bits : n);
+	}
+	return (span);
+}
+
+inline static int32
+find1span(unsigned char* bp, int32 bs, int32 be)
+{
+	int32 bits = be - bs;
+	int32 n, span;
+
+	bp += bs>>3;
+	/*
+	 * Check partial byte on lhs.
+	 */
+	if (bits > 0 && (n = (bs & 7))) {
+		span = oneruns[(*bp << n) & 0xff];
+		if (span > 8-n)		/* table value too generous */
+			span = 8-n;
+		if (span > bits)	/* constrain span to bit range */
+			span = bits;
+		if (n+span < 8)		/* doesn't extend to edge of byte */
+			return (span);
+		bits -= span;
+		bp++;
+	} else
+		span = 0;
+	if (bits >= (int32)(2 * 8 * sizeof(long))) {
+		long* lp;
+		/*
+		 * Align to longword boundary and check longwords.
+		 */
+		while (!isAligned(bp, long)) {
+			if (*bp != 0xff)
+				return (span + oneruns[*bp]);
+			span += 8, bits -= 8;
+			bp++;
+		}
+		lp = (long*) bp;
+		while ((bits >= (int32)(8 * sizeof(long))) && (~0 == *lp)) {
+			span += 8*sizeof (long), bits -= 8*sizeof (long);
+			lp++;
+		}
+		bp = (unsigned char*) lp;
+	}
+	/*
+	 * Scan full bytes for all 1's.
+	 */
+	while (bits >= 8) {
+		if (*bp != 0xff)	/* end of run */
+			return (span + oneruns[*bp]);
+		span += 8, bits -= 8;
+		bp++;
+	}
+	/*
+	 * Check partial byte on rhs.
+	 */
+	if (bits > 0) {
+		n = oneruns[*bp];
+		span += (n > bits ? bits : n);
+	}
+	return (span);
+}
+
+/*
+ * Return the offset of the next bit in the range
+ * [bs..be] that is different from the specified
+ * color.  The end, be, is returned if no such bit
+ * exists.
+ */
+#define	finddiff(_cp, _bs, _be, _color)	\
+	(_bs + (_color ? find1span(_cp,_bs,_be) : find0span(_cp,_bs,_be)))
+/*
+ * Like finddiff, but also check the starting bit
+ * against the end in case start > end.
+ */
+#define	finddiff2(_cp, _bs, _be, _color) \
+	(_bs < _be ? finddiff(_cp,_bs,_be,_color) : _be)
+
+/*
+ * 1d-encode a row of pixels.  The encoding is
+ * a sequence of all-white or all-black spans
+ * of pixels encoded with Huffman codes.
+ */
+static int
+Fax3Encode1DRow(TIFF* tif, unsigned char* bp, uint32 bits)
+{
+	Fax3CodecState* sp = EncoderState(tif);
+	int32 span;
+        uint32 bs = 0;
+
+	for (;;) {
+		span = find0span(bp, bs, bits);		/* white span */
+		putspan(tif, span, TIFFFaxWhiteCodes);
+		bs += span;
+		if (bs >= bits)
+			break;
+		span = find1span(bp, bs, bits);		/* black span */
+		putspan(tif, span, TIFFFaxBlackCodes);
+		bs += span;
+		if (bs >= bits)
+			break;
+	}
+	if (sp->b.mode & (FAXMODE_BYTEALIGN|FAXMODE_WORDALIGN)) {
+		if (sp->bit != 8)			/* byte-align */
+			Fax3FlushBits(tif, sp);
+		if ((sp->b.mode&FAXMODE_WORDALIGN) &&
+		    !isAligned(tif->tif_rawcp, uint16))
+			Fax3FlushBits(tif, sp);
+	}
+	return (1);
+}
+
+static const tableentry horizcode =
+    { 3, 0x1, 0 };	/* 001 */
+static const tableentry passcode =
+    { 4, 0x1, 0 };	/* 0001 */
+static const tableentry vcodes[7] = {
+    { 7, 0x03, 0 },	/* 0000 011 */
+    { 6, 0x03, 0 },	/* 0000 11 */
+    { 3, 0x03, 0 },	/* 011 */
+    { 1, 0x1, 0 },	/* 1 */
+    { 3, 0x2, 0 },	/* 010 */
+    { 6, 0x02, 0 },	/* 0000 10 */
+    { 7, 0x02, 0 }	/* 0000 010 */
+};
+
+/*
+ * 2d-encode a row of pixels.  Consult the CCITT
+ * documentation for the algorithm.
+ */
+static int
+Fax3Encode2DRow(TIFF* tif, unsigned char* bp, unsigned char* rp, uint32 bits)
+{
+#define	PIXEL(buf,ix)	((((buf)[(ix)>>3]) >> (7-((ix)&7))) & 1)
+        uint32 a0 = 0;
+	uint32 a1 = (PIXEL(bp, 0) != 0 ? 0 : finddiff(bp, 0, bits, 0));
+	uint32 b1 = (PIXEL(rp, 0) != 0 ? 0 : finddiff(rp, 0, bits, 0));
+	uint32 a2, b2;
+
+	for (;;) {
+		b2 = finddiff2(rp, b1, bits, PIXEL(rp,b1));
+		if (b2 >= a1) {
+			int32 d = b1 - a1;
+			if (!(-3 <= d && d <= 3)) {	/* horizontal mode */
+				a2 = finddiff2(bp, a1, bits, PIXEL(bp,a1));
+				putcode(tif, &horizcode);
+				if (a0+a1 == 0 || PIXEL(bp, a0) == 0) {
+					putspan(tif, a1-a0, TIFFFaxWhiteCodes);
+					putspan(tif, a2-a1, TIFFFaxBlackCodes);
+				} else {
+					putspan(tif, a1-a0, TIFFFaxBlackCodes);
+					putspan(tif, a2-a1, TIFFFaxWhiteCodes);
+				}
+				a0 = a2;
+			} else {			/* vertical mode */
+				putcode(tif, &vcodes[d+3]);
+				a0 = a1;
+			}
+		} else {				/* pass mode */
+			putcode(tif, &passcode);
+			a0 = b2;
+		}
+		if (a0 >= bits)
+			break;
+		a1 = finddiff(bp, a0, bits, PIXEL(bp,a0));
+		b1 = finddiff(rp, a0, bits, !PIXEL(bp,a0));
+		b1 = finddiff(rp, b1, bits, PIXEL(bp,a0));
+	}
+	return (1);
+#undef PIXEL
+}
+
+/*
+ * Encode a buffer of pixels.
+ */
+static int
+Fax3Encode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	Fax3CodecState* sp = EncoderState(tif);
+
+	(void) s;
+	while ((long)cc > 0) {
+		if ((sp->b.mode & FAXMODE_NOEOL) == 0)
+			Fax3PutEOL(tif);
+		if (is2DEncoding(sp)) {
+			if (sp->tag == G3_1D) {
+				if (!Fax3Encode1DRow(tif, bp, sp->b.rowpixels))
+					return (0);
+				sp->tag = G3_2D;
+			} else {
+				if (!Fax3Encode2DRow(tif, bp, sp->refline,
+                                                     sp->b.rowpixels))
+					return (0);
+				sp->k--;
+			}
+			if (sp->k == 0) {
+				sp->tag = G3_1D;
+				sp->k = sp->maxk-1;
+			} else
+				_TIFFmemcpy(sp->refline, bp, sp->b.rowbytes);
+		} else {
+			if (!Fax3Encode1DRow(tif, bp, sp->b.rowpixels))
+				return (0);
+		}
+		bp += sp->b.rowbytes;
+		cc -= sp->b.rowbytes;
+	}
+	return (1);
+}
+
+static int
+Fax3PostEncode(TIFF* tif)
+{
+	Fax3CodecState* sp = EncoderState(tif);
+
+	if (sp->bit != 8)
+		Fax3FlushBits(tif, sp);
+	return (1);
+}
+
+static void
+Fax3Close(TIFF* tif)
+{
+	if ((Fax3State(tif)->mode & FAXMODE_NORTC) == 0) {
+		Fax3CodecState* sp = EncoderState(tif);
+		unsigned int code = EOL;
+		unsigned int length = 12;
+		int i;
+
+		if (is2DEncoding(sp))
+			code = (code<<1) | (sp->tag == G3_1D), length++;
+		for (i = 0; i < 6; i++)
+			Fax3PutBits(tif, code, length);
+		Fax3FlushBits(tif, sp);
+	}
+}
+
+static void
+Fax3Cleanup(TIFF* tif)
+{
+	Fax3CodecState* sp = DecoderState(tif);
+	
+	assert(sp != 0);
+
+	tif->tif_tagmethods.vgetfield = sp->b.vgetparent;
+	tif->tif_tagmethods.vsetfield = sp->b.vsetparent;
+
+	if (sp->runs)
+		_TIFFfree(sp->runs);
+	if (sp->refline)
+		_TIFFfree(sp->refline);
+
+	if (Fax3State(tif)->subaddress)
+		_TIFFfree(Fax3State(tif)->subaddress);
+	_TIFFfree(tif->tif_data);
+	tif->tif_data = NULL;
+
+	_TIFFSetDefaultCompressionState(tif);
+}
+
+#define	FIELD_BADFAXLINES	(FIELD_CODEC+0)
+#define	FIELD_CLEANFAXDATA	(FIELD_CODEC+1)
+#define	FIELD_BADFAXRUN		(FIELD_CODEC+2)
+#define	FIELD_RECVPARAMS	(FIELD_CODEC+3)
+#define	FIELD_SUBADDRESS	(FIELD_CODEC+4)
+#define	FIELD_RECVTIME		(FIELD_CODEC+5)
+#define	FIELD_FAXDCS		(FIELD_CODEC+6)
+
+#define	FIELD_OPTIONS		(FIELD_CODEC+7)
+
+static const TIFFFieldInfo faxFieldInfo[] = {
+    { TIFFTAG_FAXMODE,		 0, 0,	TIFF_ANY,	FIELD_PSEUDO,
+      FALSE,	FALSE,	"FaxMode" },
+    { TIFFTAG_FAXFILLFUNC,	 0, 0,	TIFF_ANY,	FIELD_PSEUDO,
+      FALSE,	FALSE,	"FaxFillFunc" },
+    { TIFFTAG_BADFAXLINES,	 1, 1,	TIFF_LONG,	FIELD_BADFAXLINES,
+      TRUE,	FALSE,	"BadFaxLines" },
+    { TIFFTAG_BADFAXLINES,	 1, 1,	TIFF_SHORT,	FIELD_BADFAXLINES,
+      TRUE,	FALSE,	"BadFaxLines" },
+    { TIFFTAG_CLEANFAXDATA,	 1, 1,	TIFF_SHORT,	FIELD_CLEANFAXDATA,
+      TRUE,	FALSE,	"CleanFaxData" },
+    { TIFFTAG_CONSECUTIVEBADFAXLINES,1,1, TIFF_LONG,	FIELD_BADFAXRUN,
+      TRUE,	FALSE,	"ConsecutiveBadFaxLines" },
+    { TIFFTAG_CONSECUTIVEBADFAXLINES,1,1, TIFF_SHORT,	FIELD_BADFAXRUN,
+      TRUE,	FALSE,	"ConsecutiveBadFaxLines" },
+    { TIFFTAG_FAXRECVPARAMS,	 1, 1, TIFF_LONG,	FIELD_RECVPARAMS,
+      TRUE,	FALSE,	"FaxRecvParams" },
+    { TIFFTAG_FAXSUBADDRESS,	-1,-1, TIFF_ASCII,	FIELD_SUBADDRESS,
+      TRUE,	FALSE,	"FaxSubAddress" },
+    { TIFFTAG_FAXRECVTIME,	 1, 1, TIFF_LONG,	FIELD_RECVTIME,
+      TRUE,	FALSE,	"FaxRecvTime" },
+    { TIFFTAG_FAXDCS,		-1,-1, TIFF_ASCII,	FIELD_FAXDCS,
+      TRUE,	FALSE,	"FaxDcs" },
+};
+static const TIFFFieldInfo fax3FieldInfo[] = {
+    { TIFFTAG_GROUP3OPTIONS,	 1, 1,	TIFF_LONG,	FIELD_OPTIONS,
+      FALSE,	FALSE,	"Group3Options" },
+};
+static const TIFFFieldInfo fax4FieldInfo[] = {
+    { TIFFTAG_GROUP4OPTIONS,	 1, 1,	TIFF_LONG,	FIELD_OPTIONS,
+      FALSE,	FALSE,	"Group4Options" },
+};
+#define	N(a)	(sizeof (a) / sizeof (a[0]))
+
+static int
+Fax3VSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	Fax3BaseState* sp = Fax3State(tif);
+
+	assert(sp != 0);
+	assert(sp->vsetparent != 0);
+
+	switch (tag) {
+	case TIFFTAG_FAXMODE:
+		sp->mode = va_arg(ap, int);
+		return (1);			/* NB: pseudo tag */
+	case TIFFTAG_FAXFILLFUNC:
+		DecoderState(tif)->fill = va_arg(ap, TIFFFaxFillFunc);
+		return (1);			/* NB: pseudo tag */
+	case TIFFTAG_GROUP3OPTIONS:
+		/* XXX: avoid reading options if compression mismatches. */
+		if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX3)
+			sp->groupoptions = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_GROUP4OPTIONS:
+		/* XXX: avoid reading options if compression mismatches. */
+		if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX4)
+			sp->groupoptions = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_BADFAXLINES:
+		sp->badfaxlines = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_CLEANFAXDATA:
+		sp->cleanfaxdata = (uint16) va_arg(ap, int);
+		break;
+	case TIFFTAG_CONSECUTIVEBADFAXLINES:
+		sp->badfaxrun = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_FAXRECVPARAMS:
+		sp->recvparams = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_FAXSUBADDRESS:
+		_TIFFsetString(&sp->subaddress, va_arg(ap, char*));
+		break;
+	case TIFFTAG_FAXRECVTIME:
+		sp->recvtime = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_FAXDCS:
+		_TIFFsetString(&sp->faxdcs, va_arg(ap, char*));
+		break;
+	default:
+		return (*sp->vsetparent)(tif, tag, ap);
+	}
+	TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit);
+	tif->tif_flags |= TIFF_DIRTYDIRECT;
+	return (1);
+}
+
+static int
+Fax3VGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	Fax3BaseState* sp = Fax3State(tif);
+
+	switch (tag) {
+	case TIFFTAG_FAXMODE:
+		*va_arg(ap, int*) = sp->mode;
+		break;
+	case TIFFTAG_FAXFILLFUNC:
+		*va_arg(ap, TIFFFaxFillFunc*) = DecoderState(tif)->fill;
+		break;
+	case TIFFTAG_GROUP3OPTIONS:
+	case TIFFTAG_GROUP4OPTIONS:
+		*va_arg(ap, uint32*) = sp->groupoptions;
+		break;
+	case TIFFTAG_BADFAXLINES:
+		*va_arg(ap, uint32*) = sp->badfaxlines;
+		break;
+	case TIFFTAG_CLEANFAXDATA:
+		*va_arg(ap, uint16*) = sp->cleanfaxdata;
+		break;
+	case TIFFTAG_CONSECUTIVEBADFAXLINES:
+		*va_arg(ap, uint32*) = sp->badfaxrun;
+		break;
+	case TIFFTAG_FAXRECVPARAMS:
+		*va_arg(ap, uint32*) = sp->recvparams;
+		break;
+	case TIFFTAG_FAXSUBADDRESS:
+		*va_arg(ap, char**) = sp->subaddress;
+		break;
+	case TIFFTAG_FAXRECVTIME:
+		*va_arg(ap, uint32*) = sp->recvtime;
+		break;
+	case TIFFTAG_FAXDCS:
+		*va_arg(ap, char**) = sp->faxdcs;
+		break;
+	default:
+		return (*sp->vgetparent)(tif, tag, ap);
+	}
+	return (1);
+}
+
+static void
+Fax3PrintDir(TIFF* tif, FILE* fd, long flags)
+{
+	Fax3BaseState* sp = Fax3State(tif);
+
+	(void) flags;
+	if (TIFFFieldSet(tif,FIELD_OPTIONS)) {
+		const char* sep = " ";
+		if (tif->tif_dir.td_compression == COMPRESSION_CCITTFAX4) {
+			fprintf(fd, "  Group 4 Options:");
+			if (sp->groupoptions & GROUP4OPT_UNCOMPRESSED)
+				fprintf(fd, "%suncompressed data", sep);
+		} else {
+
+			fprintf(fd, "  Group 3 Options:");
+			if (sp->groupoptions & GROUP3OPT_2DENCODING)
+				fprintf(fd, "%s2-d encoding", sep), sep = "+";
+			if (sp->groupoptions & GROUP3OPT_FILLBITS)
+				fprintf(fd, "%sEOL padding", sep), sep = "+";
+			if (sp->groupoptions & GROUP3OPT_UNCOMPRESSED)
+				fprintf(fd, "%suncompressed data", sep);
+		}
+		fprintf(fd, " (%lu = 0x%lx)\n",
+                        (unsigned long) sp->groupoptions,
+                        (unsigned long) sp->groupoptions);
+	}
+	if (TIFFFieldSet(tif,FIELD_CLEANFAXDATA)) {
+		fprintf(fd, "  Fax Data:");
+		switch (sp->cleanfaxdata) {
+		case CLEANFAXDATA_CLEAN:
+			fprintf(fd, " clean");
+			break;
+		case CLEANFAXDATA_REGENERATED:
+			fprintf(fd, " receiver regenerated");
+			break;
+		case CLEANFAXDATA_UNCLEAN:
+			fprintf(fd, " uncorrected errors");
+			break;
+		}
+		fprintf(fd, " (%u = 0x%x)\n",
+		    sp->cleanfaxdata, sp->cleanfaxdata);
+	}
+	if (TIFFFieldSet(tif,FIELD_BADFAXLINES))
+		fprintf(fd, "  Bad Fax Lines: %lu\n",
+                        (unsigned long) sp->badfaxlines);
+	if (TIFFFieldSet(tif,FIELD_BADFAXRUN))
+		fprintf(fd, "  Consecutive Bad Fax Lines: %lu\n",
+		    (unsigned long) sp->badfaxrun);
+	if (TIFFFieldSet(tif,FIELD_RECVPARAMS))
+		fprintf(fd, "  Fax Receive Parameters: %08lx\n",
+		   (unsigned long) sp->recvparams);
+	if (TIFFFieldSet(tif,FIELD_SUBADDRESS))
+		fprintf(fd, "  Fax SubAddress: %s\n", sp->subaddress);
+	if (TIFFFieldSet(tif,FIELD_RECVTIME))
+		fprintf(fd, "  Fax Receive Time: %lu secs\n",
+		    (unsigned long) sp->recvtime);
+	if (TIFFFieldSet(tif,FIELD_FAXDCS))
+		fprintf(fd, "  Fax DCS: %s\n", sp->faxdcs);
+}
+
+static int
+InitCCITTFax3(TIFF* tif)
+{
+	Fax3BaseState* sp;
+
+	/*
+	 * Allocate state block so tag methods have storage to record values.
+	 */
+	tif->tif_data = (tidata_t)
+		_TIFFmalloc(sizeof (Fax3CodecState));
+
+	if (tif->tif_data == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, "TIFFInitCCITTFax3",
+		    "%s: No space for state block", tif->tif_name);
+		return (0);
+	}
+
+	sp = Fax3State(tif);
+        sp->rw_mode = tif->tif_mode;
+
+	/*
+	 * Merge codec-specific tag information and
+	 * override parent get/set field methods.
+	 */
+	_TIFFMergeFieldInfo(tif, faxFieldInfo, N(faxFieldInfo));
+	sp->vgetparent = tif->tif_tagmethods.vgetfield;
+	tif->tif_tagmethods.vgetfield = Fax3VGetField; /* hook for codec tags */
+	sp->vsetparent = tif->tif_tagmethods.vsetfield;
+	tif->tif_tagmethods.vsetfield = Fax3VSetField; /* hook for codec tags */
+	tif->tif_tagmethods.printdir = Fax3PrintDir;   /* hook for codec tags */
+	sp->groupoptions = 0;	
+	sp->recvparams = 0;
+	sp->subaddress = NULL;
+	sp->faxdcs = NULL;
+
+	if (sp->rw_mode == O_RDONLY) /* FIXME: improve for in place update */
+		tif->tif_flags |= TIFF_NOBITREV; /* decoder does bit reversal */
+	DecoderState(tif)->runs = NULL;
+	TIFFSetField(tif, TIFFTAG_FAXFILLFUNC, _TIFFFax3fillruns);
+	EncoderState(tif)->refline = NULL;
+
+	/*
+	 * Install codec methods.
+	 */
+	tif->tif_setupdecode = Fax3SetupState;
+	tif->tif_predecode = Fax3PreDecode;
+	tif->tif_decoderow = Fax3Decode1D;
+	tif->tif_decodestrip = Fax3Decode1D;
+	tif->tif_decodetile = Fax3Decode1D;
+	tif->tif_setupencode = Fax3SetupState;
+	tif->tif_preencode = Fax3PreEncode;
+	tif->tif_postencode = Fax3PostEncode;
+	tif->tif_encoderow = Fax3Encode;
+	tif->tif_encodestrip = Fax3Encode;
+	tif->tif_encodetile = Fax3Encode;
+	tif->tif_close = Fax3Close;
+	tif->tif_cleanup = Fax3Cleanup;
+
+	return (1);
+}
+
+int
+TIFFInitCCITTFax3(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	if (InitCCITTFax3(tif)) {
+		_TIFFMergeFieldInfo(tif, fax3FieldInfo, N(fax3FieldInfo));
+
+		/*
+		 * The default format is Class/F-style w/o RTC.
+		 */
+		return TIFFSetField(tif, TIFFTAG_FAXMODE, FAXMODE_CLASSF);
+	} else
+		return (0);
+}
+
+/*
+ * CCITT Group 4 (T.6) Facsimile-compatible
+ * Compression Scheme Support.
+ */
+
+#define	SWAP(t,a,b)	{ t x; x = (a); (a) = (b); (b) = x; }
+/*
+ * Decode the requested amount of G4-encoded data.
+ */
+static int
+Fax4Decode(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s)
+{
+	DECLARE_STATE_2D(tif, sp, "Fax4Decode");
+        int line = 0;
+
+	(void) s;
+	CACHE_STATE(tif, sp);
+	while ((long)occ > 0) {
+		a0 = 0;
+		RunLength = 0;
+		pa = thisrun = sp->curruns;
+		pb = sp->refruns;
+		b1 = *pb++;
+#ifdef FAX3_DEBUG
+		printf("\nBitAcc=%08X, BitsAvail = %d\n", BitAcc, BitsAvail);
+		printf("-------------------- %d\n", tif->tif_row);
+		fflush(stdout);
+#endif
+		EXPAND2D(EOFG4);
+                if (EOLcnt)
+                    goto EOFG4;
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		SETVALUE(0);		/* imaginary change for reference */
+		SWAP(uint32*, sp->curruns, sp->refruns);
+		buf += sp->b.rowbytes;
+		occ -= sp->b.rowbytes;
+                line++;
+		continue;
+	EOFG4:
+                NeedBits16( 13, BADG4 );
+        BADG4:
+#ifdef FAX3_DEBUG
+                if( GetBits(13) != 0x1001 )
+                    fputs( "Bad RTC\n", stderr );
+#endif                
+                ClrBits( 13 );
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		UNCACHE_STATE(tif, sp);
+		return (-1);
+	}
+	UNCACHE_STATE(tif, sp);
+	return (1);
+}
+#undef	SWAP
+
+/*
+ * Encode the requested amount of data.
+ */
+static int
+Fax4Encode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	Fax3CodecState *sp = EncoderState(tif);
+
+	(void) s;
+	while ((long)cc > 0) {
+		if (!Fax3Encode2DRow(tif, bp, sp->refline, sp->b.rowpixels))
+			return (0);
+		_TIFFmemcpy(sp->refline, bp, sp->b.rowbytes);
+		bp += sp->b.rowbytes;
+		cc -= sp->b.rowbytes;
+	}
+	return (1);
+}
+
+static int
+Fax4PostEncode(TIFF* tif)
+{
+	Fax3CodecState *sp = EncoderState(tif);
+
+	/* terminate strip w/ EOFB */
+	Fax3PutBits(tif, EOL, 12);
+	Fax3PutBits(tif, EOL, 12);
+	if (sp->bit != 8)
+		Fax3FlushBits(tif, sp);
+	return (1);
+}
+
+int
+TIFFInitCCITTFax4(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	if (InitCCITTFax3(tif)) {		/* reuse G3 support */
+		_TIFFMergeFieldInfo(tif, fax4FieldInfo, N(fax4FieldInfo));
+
+		tif->tif_decoderow = Fax4Decode;
+		tif->tif_decodestrip = Fax4Decode;
+		tif->tif_decodetile = Fax4Decode;
+		tif->tif_encoderow = Fax4Encode;
+		tif->tif_encodestrip = Fax4Encode;
+		tif->tif_encodetile = Fax4Encode;
+		tif->tif_postencode = Fax4PostEncode;
+		/*
+		 * Suppress RTC at the end of each strip.
+		 */
+		return TIFFSetField(tif, TIFFTAG_FAXMODE, FAXMODE_NORTC);
+	} else
+		return (0);
+}
+
+/*
+ * CCITT Group 3 1-D Modified Huffman RLE Compression Support.
+ * (Compression algorithms 2 and 32771)
+ */
+
+/*
+ * Decode the requested amount of RLE-encoded data.
+ */
+static int
+Fax3DecodeRLE(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s)
+{
+	DECLARE_STATE(tif, sp, "Fax3DecodeRLE");
+	int mode = sp->b.mode;
+        int line = 0;
+
+	(void) s;
+	CACHE_STATE(tif, sp);
+	thisrun = sp->curruns;
+	while ((long)occ > 0) {
+		a0 = 0;
+		RunLength = 0;
+		pa = thisrun;
+#ifdef FAX3_DEBUG
+		printf("\nBitAcc=%08X, BitsAvail = %d\n", BitAcc, BitsAvail);
+		printf("-------------------- %d\n", tif->tif_row);
+		fflush(stdout);
+#endif
+		EXPAND1D(EOFRLE);
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		/*
+		 * Cleanup at the end of the row.
+		 */
+		if (mode & FAXMODE_BYTEALIGN) {
+			int n = BitsAvail - (BitsAvail &~ 7);
+			ClrBits(n);
+		} else if (mode & FAXMODE_WORDALIGN) {
+			int n = BitsAvail - (BitsAvail &~ 15);
+			ClrBits(n);
+			if (BitsAvail == 0 && !isAligned(cp, uint16))
+			    cp++;
+		}
+		buf += sp->b.rowbytes;
+		occ -= sp->b.rowbytes;
+                line++;
+		continue;
+	EOFRLE:				/* premature EOF */
+		(*sp->fill)(buf, thisrun, pa, lastx);
+		UNCACHE_STATE(tif, sp);
+		return (-1);
+	}
+	UNCACHE_STATE(tif, sp);
+	return (1);
+}
+
+int
+TIFFInitCCITTRLE(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	if (InitCCITTFax3(tif)) {		/* reuse G3 support */
+		tif->tif_decoderow = Fax3DecodeRLE;
+		tif->tif_decodestrip = Fax3DecodeRLE;
+		tif->tif_decodetile = Fax3DecodeRLE;
+		/*
+		 * Suppress RTC+EOLs when encoding and byte-align data.
+		 */
+		return TIFFSetField(tif, TIFFTAG_FAXMODE,
+		    FAXMODE_NORTC|FAXMODE_NOEOL|FAXMODE_BYTEALIGN);
+	} else
+		return (0);
+}
+
+int
+TIFFInitCCITTRLEW(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	if (InitCCITTFax3(tif)) {		/* reuse G3 support */
+		tif->tif_decoderow = Fax3DecodeRLE;
+		tif->tif_decodestrip = Fax3DecodeRLE;
+		tif->tif_decodetile = Fax3DecodeRLE;
+		/*
+		 * Suppress RTC+EOLs when encoding and word-align data.
+		 */
+		return TIFFSetField(tif, TIFFTAG_FAXMODE,
+		    FAXMODE_NORTC|FAXMODE_NOEOL|FAXMODE_WORDALIGN);
+	} else
+		return (0);
+}
+#endif /* CCITT_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_fax3.h b/src/libtiff/tif_fax3.h
new file mode 100644
index 0000000..99ced5f
--- /dev/null
+++ b/src/libtiff/tif_fax3.h
@@ -0,0 +1,525 @@
+/* $Id: tif_fax3.h,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1990-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _FAX3_
+#define	_FAX3_
+/*
+ * TIFF Library.
+ *
+ * CCITT Group 3 (T.4) and Group 4 (T.6) Decompression Support.
+ *
+ * Decoder support is derived, with permission, from the code
+ * in Frank Cringle's viewfax program;
+ *      Copyright (C) 1990, 1995  Frank D. Cringle.
+ */
+#include "tiff.h"
+
+/*
+ * To override the default routine used to image decoded
+ * spans one can use the pseduo tag TIFFTAG_FAXFILLFUNC.
+ * The routine must have the type signature given below;
+ * for example:
+ *
+ * fillruns(unsigned char* buf, uint32* runs, uint32* erun, uint32 lastx)
+ *
+ * where buf is place to set the bits, runs is the array of b&w run
+ * lengths (white then black), erun is the last run in the array, and
+ * lastx is the width of the row in pixels.  Fill routines can assume
+ * the run array has room for at least lastx runs and can overwrite
+ * data in the run array as needed (e.g. to append zero runs to bring
+ * the count up to a nice multiple).
+ */
+typedef	void (*TIFFFaxFillFunc)(unsigned char*, uint32*, uint32*, uint32);
+
+/*
+ * The default run filler; made external for other decoders.
+ */
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern	void _TIFFFax3fillruns(unsigned char*, uint32*, uint32*, uint32);
+#if defined(__cplusplus)
+}
+#endif
+
+
+/* finite state machine codes */
+#define S_Null		0
+#define S_Pass		1
+#define S_Horiz		2
+#define S_V0		3
+#define S_VR		4
+#define S_VL		5
+#define S_Ext		6
+#define S_TermW		7
+#define S_TermB		8
+#define S_MakeUpW	9
+#define S_MakeUpB	10
+#define S_MakeUp	11
+#define S_EOL		12
+
+typedef struct {		/* state table entry */
+	unsigned char State;	/* see above */
+	unsigned char Width;	/* width of code in bits */
+	uint32	Param;		/* unsigned 32-bit run length in bits */
+} TIFFFaxTabEnt;
+
+extern	const TIFFFaxTabEnt TIFFFaxMainTable[];
+extern	const TIFFFaxTabEnt TIFFFaxWhiteTable[];
+extern	const TIFFFaxTabEnt TIFFFaxBlackTable[];
+
+/*
+ * The following macros define the majority of the G3/G4 decoder
+ * algorithm using the state tables defined elsewhere.  To build
+ * a decoder you need some setup code and some glue code. Note
+ * that you may also need/want to change the way the NeedBits*
+ * macros get input data if, for example, you know the data to be
+ * decoded is properly aligned and oriented (doing so before running
+ * the decoder can be a big performance win).
+ *
+ * Consult the decoder in the TIFF library for an idea of what you
+ * need to define and setup to make use of these definitions.
+ *
+ * NB: to enable a debugging version of these macros define FAX3_DEBUG
+ *     before including this file.  Trace output goes to stdout.
+ */
+
+#ifndef EndOfData
+#define EndOfData()	(cp >= ep)
+#endif
+/*
+ * Need <=8 or <=16 bits of input data.  Unlike viewfax we
+ * cannot use/assume a word-aligned, properly bit swizzled
+ * input data set because data may come from an arbitrarily
+ * aligned, read-only source such as a memory-mapped file.
+ * Note also that the viewfax decoder does not check for
+ * running off the end of the input data buffer.  This is
+ * possible for G3-encoded data because it prescans the input
+ * data to count EOL markers, but can cause problems for G4
+ * data.  In any event, we don't prescan and must watch for
+ * running out of data since we can't permit the library to
+ * scan past the end of the input data buffer.
+ *
+ * Finally, note that we must handle remaindered data at the end
+ * of a strip specially.  The coder asks for a fixed number of
+ * bits when scanning for the next code.  This may be more bits
+ * than are actually present in the data stream.  If we appear
+ * to run out of data but still have some number of valid bits
+ * remaining then we makeup the requested amount with zeros and
+ * return successfully.  If the returned data is incorrect then
+ * we should be called again and get a premature EOF error;
+ * otherwise we should get the right answer.
+ */
+#ifndef NeedBits8
+#define NeedBits8(n,eoflab) do {					\
+    if (BitsAvail < (n)) {						\
+	if (EndOfData()) {						\
+	    if (BitsAvail == 0)			/* no valid bits */	\
+		goto eoflab;						\
+	    BitsAvail = (n);			/* pad with zeros */	\
+	} else {							\
+	    BitAcc |= ((uint32) bitmap[*cp++])<<BitsAvail;		\
+	    BitsAvail += 8;						\
+	}								\
+    }									\
+} while (0)
+#endif
+#ifndef NeedBits16
+#define NeedBits16(n,eoflab) do {					\
+    if (BitsAvail < (n)) {						\
+	if (EndOfData()) {						\
+	    if (BitsAvail == 0)			/* no valid bits */	\
+		goto eoflab;						\
+	    BitsAvail = (n);			/* pad with zeros */	\
+	} else {							\
+	    BitAcc |= ((uint32) bitmap[*cp++])<<BitsAvail;		\
+	    if ((BitsAvail += 8) < (n)) {				\
+		if (EndOfData()) {					\
+		    /* NB: we know BitsAvail is non-zero here */	\
+		    BitsAvail = (n);		/* pad with zeros */	\
+		} else {						\
+		    BitAcc |= ((uint32) bitmap[*cp++])<<BitsAvail;	\
+		    BitsAvail += 8;					\
+		}							\
+	    }								\
+	}								\
+    }									\
+} while (0)
+#endif
+#define GetBits(n)	(BitAcc & ((1<<(n))-1))
+#define ClrBits(n) do {							\
+    BitsAvail -= (n);							\
+    BitAcc >>= (n);							\
+} while (0)
+
+#ifdef FAX3_DEBUG
+static const char* StateNames[] = {
+    "Null   ",
+    "Pass   ",
+    "Horiz  ",
+    "V0     ",
+    "VR     ",
+    "VL     ",
+    "Ext    ",
+    "TermW  ",
+    "TermB  ",
+    "MakeUpW",
+    "MakeUpB",
+    "MakeUp ",
+    "EOL    ",
+};
+#define DEBUG_SHOW putchar(BitAcc & (1 << t) ? '1' : '0')
+#define LOOKUP8(wid,tab,eoflab) do {					\
+    int t;								\
+    NeedBits8(wid,eoflab);						\
+    TabEnt = tab + GetBits(wid);					\
+    printf("%08lX/%d: %s%5d\t", (long) BitAcc, BitsAvail,		\
+	   StateNames[TabEnt->State], TabEnt->Param);			\
+    for (t = 0; t < TabEnt->Width; t++)					\
+	DEBUG_SHOW;							\
+    putchar('\n');							\
+    fflush(stdout);							\
+    ClrBits(TabEnt->Width);						\
+} while (0)
+#define LOOKUP16(wid,tab,eoflab) do {					\
+    int t;								\
+    NeedBits16(wid,eoflab);						\
+    TabEnt = tab + GetBits(wid);					\
+    printf("%08lX/%d: %s%5d\t", (long) BitAcc, BitsAvail,		\
+	   StateNames[TabEnt->State], TabEnt->Param);			\
+    for (t = 0; t < TabEnt->Width; t++)					\
+	DEBUG_SHOW;							\
+    putchar('\n');							\
+    fflush(stdout);							\
+    ClrBits(TabEnt->Width);						\
+} while (0)
+
+#define SETVALUE(x) do {							\
+    *pa++ = RunLength + (x);						\
+    printf("SETVALUE: %d\t%d\n", RunLength + (x), a0);			\
+    a0 += x;								\
+    RunLength = 0;							\
+} while (0)
+#else
+#define LOOKUP8(wid,tab,eoflab) do {					\
+    NeedBits8(wid,eoflab);						\
+    TabEnt = tab + GetBits(wid);					\
+    ClrBits(TabEnt->Width);						\
+} while (0)
+#define LOOKUP16(wid,tab,eoflab) do {					\
+    NeedBits16(wid,eoflab);						\
+    TabEnt = tab + GetBits(wid);					\
+    ClrBits(TabEnt->Width);						\
+} while (0)
+
+/*
+ * Append a run to the run length array for the
+ * current row and reset decoding state.
+ */
+#define SETVALUE(x) do {							\
+    *pa++ = RunLength + (x);						\
+    a0 += (x);								\
+    RunLength = 0;							\
+} while (0)
+#endif
+
+/*
+ * Synchronize input decoding at the start of each
+ * row by scanning for an EOL (if appropriate) and
+ * skipping any trash data that might be present
+ * after a decoding error.  Note that the decoding
+ * done elsewhere that recognizes an EOL only consumes
+ * 11 consecutive zero bits.  This means that if EOLcnt
+ * is non-zero then we still need to scan for the final flag
+ * bit that is part of the EOL code.
+ */
+#define	SYNC_EOL(eoflab) do {						\
+    if (EOLcnt == 0) {							\
+	for (;;) {							\
+	    NeedBits16(11,eoflab);					\
+	    if (GetBits(11) == 0)					\
+		break;							\
+	    ClrBits(1);							\
+	}								\
+    }									\
+    for (;;) {								\
+	NeedBits8(8,eoflab);						\
+	if (GetBits(8))							\
+	    break;							\
+	ClrBits(8);							\
+    }									\
+    while (GetBits(1) == 0)						\
+	ClrBits(1);							\
+    ClrBits(1);				/* EOL bit */			\
+    EOLcnt = 0;				/* reset EOL counter/flag */	\
+} while (0)
+
+/*
+ * Cleanup the array of runs after decoding a row.
+ * We adjust final runs to insure the user buffer is not
+ * overwritten and/or undecoded area is white filled.
+ */
+#define	CLEANUP_RUNS() do {						\
+    if (RunLength)							\
+	SETVALUE(0);							\
+    if (a0 != lastx) {							\
+	badlength(a0, lastx);						\
+	while (a0 > lastx && pa > thisrun)				\
+	    a0 -= *--pa;						\
+	if (a0 < lastx) {						\
+	    if (a0 < 0)							\
+		a0 = 0;							\
+	    if ((pa-thisrun)&1)						\
+		SETVALUE(0);						\
+	    SETVALUE(lastx - a0);						\
+	} else if (a0 > lastx) {					\
+	    SETVALUE(lastx);						\
+	    SETVALUE(0);							\
+	}								\
+    }									\
+} while (0)
+
+/*
+ * Decode a line of 1D-encoded data.
+ *
+ * The line expanders are written as macros so that they can be reused
+ * but still have direct access to the local variables of the "calling"
+ * function.
+ *
+ * Note that unlike the original version we have to explicitly test for
+ * a0 >= lastx after each black/white run is decoded.  This is because
+ * the original code depended on the input data being zero-padded to
+ * insure the decoder recognized an EOL before running out of data.
+ */
+#define EXPAND1D(eoflab) do {						\
+    for (;;) {								\
+	for (;;) {							\
+	    LOOKUP16(12, TIFFFaxWhiteTable, eof1d);			\
+	    switch (TabEnt->State) {					\
+	    case S_EOL:							\
+		EOLcnt = 1;						\
+		goto done1d;						\
+	    case S_TermW:						\
+		SETVALUE(TabEnt->Param);					\
+		goto doneWhite1d;					\
+	    case S_MakeUpW:						\
+	    case S_MakeUp:						\
+		a0 += TabEnt->Param;					\
+		RunLength += TabEnt->Param;				\
+		break;							\
+	    default:							\
+		unexpected("WhiteTable", a0);				\
+		goto done1d;						\
+	    }								\
+	}								\
+    doneWhite1d:							\
+	if (a0 >= lastx)						\
+	    goto done1d;						\
+	for (;;) {							\
+	    LOOKUP16(13, TIFFFaxBlackTable, eof1d);			\
+	    switch (TabEnt->State) {					\
+	    case S_EOL:							\
+		EOLcnt = 1;						\
+		goto done1d;						\
+	    case S_TermB:						\
+		SETVALUE(TabEnt->Param);					\
+		goto doneBlack1d;					\
+	    case S_MakeUpB:						\
+	    case S_MakeUp:						\
+		a0 += TabEnt->Param;					\
+		RunLength += TabEnt->Param;				\
+		break;							\
+	    default:							\
+		unexpected("BlackTable", a0);				\
+		goto done1d;						\
+	    }								\
+	}								\
+    doneBlack1d:							\
+	if (a0 >= lastx)						\
+	    goto done1d;						\
+        if( *(pa-1) == 0 && *(pa-2) == 0 )				\
+            pa -= 2;                                                    \
+    }									\
+eof1d:									\
+    prematureEOF(a0);							\
+    CLEANUP_RUNS();							\
+    goto eoflab;							\
+done1d:									\
+    CLEANUP_RUNS();							\
+} while (0)
+
+/*
+ * Update the value of b1 using the array
+ * of runs for the reference line.
+ */
+#define CHECK_b1 do {							\
+    if (pa != thisrun) while (b1 <= a0 && b1 < lastx) {			\
+	b1 += pb[0] + pb[1];						\
+	pb += 2;							\
+    }									\
+} while (0)
+
+/*
+ * Expand a row of 2D-encoded data.
+ */
+#define EXPAND2D(eoflab) do {						\
+    while (a0 < lastx) {						\
+	LOOKUP8(7, TIFFFaxMainTable, eof2d);				\
+	switch (TabEnt->State) {					\
+	case S_Pass:							\
+	    CHECK_b1;							\
+	    b1 += *pb++;						\
+	    RunLength += b1 - a0;					\
+	    a0 = b1;							\
+	    b1 += *pb++;						\
+	    break;							\
+	case S_Horiz:							\
+	    if ((pa-thisrun)&1) {					\
+		for (;;) {	/* black first */			\
+		    LOOKUP16(13, TIFFFaxBlackTable, eof2d);		\
+		    switch (TabEnt->State) {				\
+		    case S_TermB:					\
+			SETVALUE(TabEnt->Param);				\
+			goto doneWhite2da;				\
+		    case S_MakeUpB:					\
+		    case S_MakeUp:					\
+			a0 += TabEnt->Param;				\
+			RunLength += TabEnt->Param;			\
+			break;						\
+		    default:						\
+			goto badBlack2d;				\
+		    }							\
+		}							\
+	    doneWhite2da:;						\
+		for (;;) {	/* then white */			\
+		    LOOKUP16(12, TIFFFaxWhiteTable, eof2d);		\
+		    switch (TabEnt->State) {				\
+		    case S_TermW:					\
+			SETVALUE(TabEnt->Param);				\
+			goto doneBlack2da;				\
+		    case S_MakeUpW:					\
+		    case S_MakeUp:					\
+			a0 += TabEnt->Param;				\
+			RunLength += TabEnt->Param;			\
+			break;						\
+		    default:						\
+			goto badWhite2d;				\
+		    }							\
+		}							\
+	    doneBlack2da:;						\
+	    } else {							\
+		for (;;) {	/* white first */			\
+		    LOOKUP16(12, TIFFFaxWhiteTable, eof2d);		\
+		    switch (TabEnt->State) {				\
+		    case S_TermW:					\
+			SETVALUE(TabEnt->Param);				\
+			goto doneWhite2db;				\
+		    case S_MakeUpW:					\
+		    case S_MakeUp:					\
+			a0 += TabEnt->Param;				\
+			RunLength += TabEnt->Param;			\
+			break;						\
+		    default:						\
+			goto badWhite2d;				\
+		    }							\
+		}							\
+	    doneWhite2db:;						\
+		for (;;) {	/* then black */			\
+		    LOOKUP16(13, TIFFFaxBlackTable, eof2d);		\
+		    switch (TabEnt->State) {				\
+		    case S_TermB:					\
+			SETVALUE(TabEnt->Param);				\
+			goto doneBlack2db;				\
+		    case S_MakeUpB:					\
+		    case S_MakeUp:					\
+			a0 += TabEnt->Param;				\
+			RunLength += TabEnt->Param;			\
+			break;						\
+		    default:						\
+			goto badBlack2d;				\
+		    }							\
+		}							\
+	    doneBlack2db:;						\
+	    }								\
+	    CHECK_b1;							\
+	    break;							\
+	case S_V0:							\
+	    CHECK_b1;							\
+	    SETVALUE(b1 - a0);						\
+	    b1 += *pb++;						\
+	    break;							\
+	case S_VR:							\
+	    CHECK_b1;							\
+	    SETVALUE(b1 - a0 + TabEnt->Param);				\
+	    b1 += *pb++;						\
+	    break;							\
+	case S_VL:							\
+	    CHECK_b1;							\
+	    SETVALUE(b1 - a0 - TabEnt->Param);				\
+	    b1 -= *--pb;						\
+	    break;							\
+	case S_Ext:							\
+	    *pa++ = lastx - a0;						\
+	    extension(a0);						\
+	    goto eol2d;							\
+	case S_EOL:							\
+	    *pa++ = lastx - a0;						\
+	    NeedBits8(4,eof2d);						\
+	    if (GetBits(4))						\
+		unexpected("EOL", a0);					\
+            ClrBits(4);                                                 \
+	    EOLcnt = 1;							\
+	    goto eol2d;							\
+	default:							\
+	badMain2d:							\
+	    unexpected("MainTable", a0);				\
+	    goto eol2d;							\
+	badBlack2d:							\
+	    unexpected("BlackTable", a0);				\
+	    goto eol2d;							\
+	badWhite2d:							\
+	    unexpected("WhiteTable", a0);				\
+	    goto eol2d;							\
+	eof2d:								\
+	    prematureEOF(a0);						\
+	    CLEANUP_RUNS();						\
+	    goto eoflab;						\
+	}								\
+    }									\
+    if (RunLength) {							\
+	if (RunLength + a0 < lastx) {					\
+	    /* expect a final V0 */					\
+	    NeedBits8(1,eof2d);						\
+	    if (!GetBits(1))						\
+		goto badMain2d;						\
+	    ClrBits(1);							\
+	}								\
+	SETVALUE(0);							\
+    }									\
+eol2d:									\
+    CLEANUP_RUNS();							\
+} while (0)
+#endif /* _FAX3_ */
diff --git a/src/libtiff/tif_fax3sm.c b/src/libtiff/tif_fax3sm.c
new file mode 100644
index 0000000..08ce1ad
--- /dev/null
+++ b/src/libtiff/tif_fax3sm.c
@@ -0,0 +1,1253 @@
+/* WARNING, this file was automatically generated by the
+    mkg3states program */
+#include "tiff.h"
+#include "tif_fax3.h"
+ const TIFFFaxTabEnt TIFFFaxMainTable[128] = {
+{12,7,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},
+{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{5,6,2},{3,1,0},{5,3,1},{3,1,0},
+{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},
+{4,3,1},{3,1,0},{5,7,3},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},
+{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{4,6,2},{3,1,0},
+{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},
+{2,3,0},{3,1,0},{4,3,1},{3,1,0},{6,7,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},
+{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},
+{5,6,2},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},
+{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},{4,7,3},{3,1,0},{5,3,1},{3,1,0},
+{2,3,0},{3,1,0},{4,3,1},{3,1,0},{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},
+{4,3,1},{3,1,0},{4,6,2},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0},
+{1,4,0},{3,1,0},{5,3,1},{3,1,0},{2,3,0},{3,1,0},{4,3,1},{3,1,0}
+};
+ const TIFFFaxTabEnt TIFFFaxWhiteTable[4096] = {
+{12,11,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},
+{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},
+{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},
+{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},
+{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,960},{7,4,6},{7,8,31},{7,5,8},
+{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},
+{7,7,26},{7,5,9},{9,9,704},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,11,1792},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},
+{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},
+{9,9,832},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},
+{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1600},{7,4,5},
+{7,8,44},{7,6,17},{9,9,1344},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},
+{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1088},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},
+{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{0,0,0},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},
+{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},
+{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},
+{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},
+{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1536},{7,4,5},{7,8,43},{7,6,17},
+{9,9,1280},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},
+{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},
+{7,8,41},{7,6,16},{9,9,1024},{7,4,6},{7,8,31},{7,5,8},{7,8,57},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,9,768},{7,4,6},
+{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,11,1856},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},
+{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},{9,9,896},{7,4,6},{7,7,19},{7,5,8},
+{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,46},{7,4,3},{7,5,11},{7,4,5},
+{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},{7,8,52},{7,6,15},{7,8,0},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1728},{7,4,5},{7,8,44},{7,6,17},{9,9,1408},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,30},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,34},{9,5,128},{7,8,50},{7,6,14},
+{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},{7,8,60},{7,4,5},{7,8,42},{7,6,16},
+{9,9,1152},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,8,640},{7,4,6},{7,8,38},{9,5,128},
+{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},
+{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{0,0,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},
+{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},
+{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},
+{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,960},{7,4,6},
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+{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},
+{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},
+{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},
+{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,960},{7,4,6},
+{7,8,31},{7,5,8},{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},
+{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,9,704},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},
+{9,8,320},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},
+{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{11,12,2048},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},
+{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},
+{7,8,40},{7,6,16},{9,9,832},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},
+{7,8,36},{9,5,128},{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{9,9,1600},{7,4,5},{7,8,44},{7,6,17},{9,9,1344},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},
+{7,8,48},{7,4,3},{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1088},{7,4,6},{7,8,32},{7,5,8},
+{7,8,58},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},
+{7,7,26},{7,5,9},{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{0,0,0},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},
+{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,39},{7,6,16},
+{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},{7,8,35},{9,5,128},
+{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1536},{7,4,5},
+{7,8,43},{7,6,17},{9,9,1280},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},{7,8,47},{7,4,3},
+{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,1024},{7,4,6},{7,8,31},{7,5,8},{7,8,57},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},
+{9,9,768},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,11,1920},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},
+{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},{9,9,896},{7,4,6},
+{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,46},{7,4,3},
+{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},{7,8,52},{7,6,15},
+{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1728},{7,4,5},{7,8,44},{7,6,17},
+{9,9,1408},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,34},{9,5,128},
+{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},{7,8,60},{7,4,5},
+{7,8,42},{7,6,16},{9,9,1152},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,8,640},{7,4,6},
+{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{0,0,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},
+{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},
+{7,8,55},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},
+{7,8,53},{7,5,9},{9,8,448},{7,4,6},{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1472},{7,4,5},{7,8,43},{7,6,17},{9,9,1216},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},
+{7,8,61},{7,4,4},{7,4,2},{7,4,7},{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},
+{9,9,960},{7,4,6},{7,8,31},{7,5,8},{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,9,704},{7,4,6},{7,8,37},{9,5,128},
+{7,7,25},{7,6,15},{9,8,320},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},
+{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{11,12,2304},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,7,20},{9,5,128},{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},
+{7,7,27},{7,4,5},{7,8,40},{7,6,16},{9,9,832},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},
+{9,8,512},{7,4,6},{7,8,36},{9,5,128},{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{9,9,1600},{7,4,5},{7,8,44},{7,6,17},{9,9,1344},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},
+{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},
+{7,4,2},{7,4,7},{7,8,48},{7,4,3},{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1088},{7,4,6},
+{7,8,32},{7,5,8},{7,8,58},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},
+{7,5,11},{7,4,5},{7,7,26},{7,5,9},{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},
+{9,8,384},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},
+{9,7,256},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{0,0,0},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},
+{7,7,24},{7,6,14},{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},
+{7,8,39},{7,6,16},{9,8,576},{7,4,6},{7,7,19},{7,5,8},{7,8,55},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,45},{7,4,3},{7,5,11},{7,4,5},{7,8,53},{7,5,9},{9,8,448},{7,4,6},
+{7,8,35},{9,5,128},{7,8,51},{7,6,15},{7,8,63},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},
+{9,9,1536},{7,4,5},{7,8,43},{7,6,17},{9,9,1280},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,8,29},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},
+{9,6,1664},{7,4,6},{7,8,33},{9,5,128},{7,8,49},{7,6,14},{7,8,61},{7,4,4},{7,4,2},{7,4,7},
+{7,8,47},{7,4,3},{7,8,59},{7,4,5},{7,8,41},{7,6,16},{9,9,1024},{7,4,6},{7,8,31},{7,5,8},
+{7,8,57},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},
+{7,7,26},{7,5,9},{9,9,768},{7,4,6},{7,8,37},{9,5,128},{7,7,25},{7,6,15},{9,8,320},{7,4,4},
+{7,4,2},{7,4,7},{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},
+{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},{11,12,2560},{7,4,3},
+{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},{7,7,20},{9,5,128},{7,7,24},{7,6,14},
+{7,7,28},{7,4,4},{7,4,2},{7,4,7},{7,7,23},{7,4,3},{7,7,27},{7,4,5},{7,8,40},{7,6,16},
+{9,9,896},{7,4,6},{7,7,19},{7,5,8},{7,8,56},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7},
+{7,8,46},{7,4,3},{7,5,11},{7,4,5},{7,8,54},{7,5,9},{9,8,512},{7,4,6},{7,8,36},{9,5,128},
+{7,8,52},{7,6,15},{7,8,0},{7,4,4},{7,4,2},{7,4,7},{7,6,13},{7,4,3},{9,9,1728},{7,4,5},
+{7,8,44},{7,6,17},{9,9,1408},{7,4,6},{7,6,1},{7,5,8},{9,6,192},{9,5,64},{7,5,10},{7,4,4},
+{7,4,2},{7,4,7},{7,8,30},{7,4,3},{7,5,11},{7,4,5},{7,6,12},{7,5,9},{9,6,1664},{7,4,6},
+{7,8,34},{9,5,128},{7,8,50},{7,6,14},{7,8,62},{7,4,4},{7,4,2},{7,4,7},{7,8,48},{7,4,3},
+{7,8,60},{7,4,5},{7,8,42},{7,6,16},{9,9,1152},{7,4,6},{7,8,32},{7,5,8},{7,8,58},{9,5,64},
+{7,5,10},{7,4,4},{7,4,2},{7,4,7},{7,7,22},{7,4,3},{7,5,11},{7,4,5},{7,7,26},{7,5,9},
+{9,8,640},{7,4,6},{7,8,38},{9,5,128},{7,7,25},{7,6,15},{9,8,384},{7,4,4},{7,4,2},{7,4,7},
+{7,6,13},{7,4,3},{7,7,18},{7,4,5},{7,7,21},{7,6,17},{9,7,256},{7,4,6},{7,6,1},{7,5,8},
+{9,6,192},{9,5,64},{7,5,10},{7,4,4},{7,4,2},{7,4,7}
+};
+ const TIFFFaxTabEnt TIFFFaxBlackTable[8192] = {
+{12,11,0},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,8,13},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,9,15},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,18},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,17},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,11,1792},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,11,23},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,11,20},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,11,25},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
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+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,55},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,63},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,12,2304},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,12,47},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,12,39},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,12,53},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,12},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{0,0,0},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,8,13},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,11,19},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,11,24},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,11,22},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{11,12,2560},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,7,10},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,10,16},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2},{8,10,0},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},
+{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{10,10,64},{8,2,3},
+{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,9},{8,2,3},{8,3,1},{8,2,2},
+{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,11},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},
+{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},
+{8,8,14},{8,2,3},{8,3,1},{8,2,2},{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,6,8},{8,2,3},
+{8,3,1},{8,2,2},{8,4,5},{8,2,3},{8,3,4},{8,2,2},{8,7,12},{8,2,3},{8,3,1},{8,2,2},
+{8,4,6},{8,2,3},{8,3,4},{8,2,2},{8,5,7},{8,2,3},{8,3,1},{8,2,2},{8,4,5},{8,2,3},
+{8,3,4},{8,2,2}
+};
diff --git a/src/libtiff/tif_flush.c b/src/libtiff/tif_flush.c
new file mode 100644
index 0000000..140a58a
--- /dev/null
+++ b/src/libtiff/tif_flush.c
@@ -0,0 +1,67 @@
+/* $Header: /cvsroot/imtoolkit/im/src/libtiff/tif_flush.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#include "tiffiop.h"
+
+int
+TIFFFlush(TIFF* tif)
+{
+
+	if (tif->tif_mode != O_RDONLY) {
+		if (!TIFFFlushData(tif))
+			return (0);
+		if ((tif->tif_flags & TIFF_DIRTYDIRECT) &&
+		    !TIFFWriteDirectory(tif))
+			return (0);
+	}
+	return (1);
+}
+
+/*
+ * Flush buffered data to the file.
+ *
+ * Frank Warmerdam'2000: I modified this to return 1 if TIFF_BEENWRITING
+ * is not set, so that TIFFFlush() will proceed to write out the directory.
+ * The documentation says returning 1 is an error indicator, but not having
+ * been writing isn't exactly a an error.  Hopefully this doesn't cause
+ * problems for other people. 
+ */
+int
+TIFFFlushData(TIFF* tif)
+{
+	if ((tif->tif_flags & TIFF_BEENWRITING) == 0)
+		return (0);
+	if (tif->tif_flags & TIFF_POSTENCODE) {
+		tif->tif_flags &= ~TIFF_POSTENCODE;
+		if (!(*tif->tif_postencode)(tif))
+			return (0);
+	}
+	return (TIFFFlushData1(tif));
+}
+
diff --git a/src/libtiff/tif_getimage.c b/src/libtiff/tif_getimage.c
new file mode 100644
index 0000000..251733c
--- /dev/null
+++ b/src/libtiff/tif_getimage.c
@@ -0,0 +1,2598 @@
+/* $Id: tif_getimage.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library
+ *
+ * Read and return a packed RGBA image.
+ */
+#include "tiffiop.h"
+#include <stdio.h>
+
+static	int gtTileContig(TIFFRGBAImage*, uint32*, uint32, uint32);
+static	int gtTileSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
+static	int gtStripContig(TIFFRGBAImage*, uint32*, uint32, uint32);
+static	int gtStripSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
+static	int pickTileContigCase(TIFFRGBAImage*);
+static	int pickTileSeparateCase(TIFFRGBAImage*);
+
+static	const char photoTag[] = "PhotometricInterpretation";
+
+/* 
+ * Helper constants used in Orientation tag handling
+ */
+#define FLIP_VERTICALLY 0x01
+#define FLIP_HORIZONTALLY 0x02
+
+/*
+ * Color conversion constants. We will define display types here.
+ */
+
+TIFFDisplay display_sRGB = {
+	{			/* XYZ -> luminance matrix */
+		{  3.2410F, -1.5374F, -0.4986F },
+		{  -0.9692F, 1.8760F, 0.0416F },
+		{  0.0556F, -0.2040F, 1.0570F }
+	},	
+	100.0F, 100.0F, 100.0F,	/* Light o/p for reference white */
+	255, 255, 255,		/* Pixel values for ref. white */
+	1.0F, 1.0F, 1.0F,	/* Residual light o/p for black pixel */
+	2.4F, 2.4F, 2.4F,	/* Gamma values for the three guns */
+};
+
+/*
+ * Check the image to see if TIFFReadRGBAImage can deal with it.
+ * 1/0 is returned according to whether or not the image can
+ * be handled.  If 0 is returned, emsg contains the reason
+ * why it is being rejected.
+ */
+int
+TIFFRGBAImageOK(TIFF* tif, char emsg[1024])
+{
+    TIFFDirectory* td = &tif->tif_dir;
+    uint16 photometric;
+    int colorchannels;
+
+    if (!tif->tif_decodestatus) {
+	sprintf(emsg, "Sorry, requested compression method is not configured");
+	return (0);
+    }
+    switch (td->td_bitspersample) {
+    case 1: case 2: case 4:
+    case 8: case 16:
+	break;
+    default:
+	sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
+	    td->td_bitspersample);
+	return (0);
+    }
+    colorchannels = td->td_samplesperpixel - td->td_extrasamples;
+    if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) {
+	switch (colorchannels) {
+	case 1:
+	    photometric = PHOTOMETRIC_MINISBLACK;
+	    break;
+	case 3:
+	    photometric = PHOTOMETRIC_RGB;
+	    break;
+	default:
+	    sprintf(emsg, "Missing needed %s tag", photoTag);
+	    return (0);
+	}
+    }
+    switch (photometric) {
+    case PHOTOMETRIC_MINISWHITE:
+    case PHOTOMETRIC_MINISBLACK:
+    case PHOTOMETRIC_PALETTE:
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG 
+            && td->td_samplesperpixel != 1
+            && td->td_bitspersample < 8 ) {
+	    sprintf(emsg,
+                    "Sorry, can not handle contiguous data with %s=%d, "
+                    "and %s=%d and Bits/Sample=%d",
+                    photoTag, photometric,
+                    "Samples/pixel", td->td_samplesperpixel,
+                    td->td_bitspersample);
+	    return (0);
+	}
+        /*
+        ** We should likely validate that any extra samples are either
+        ** to be ignored, or are alpha, and if alpha we should try to use
+        ** them.  But for now we won't bother with this. 
+        */
+	break;
+    case PHOTOMETRIC_YCBCR:
+	if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
+	    sprintf(emsg, "Sorry, can not handle YCbCr images with %s=%d",
+		"Planarconfiguration", td->td_planarconfig);
+	    return (0);
+	}
+	break;
+    case PHOTOMETRIC_RGB: 
+	if (colorchannels < 3) {
+	    sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
+		"Color channels", colorchannels);
+	    return (0);
+	}
+	break;
+    case PHOTOMETRIC_SEPARATED:
+	{
+		uint16 inkset;
+		TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
+		if (inkset != INKSET_CMYK) {
+		    sprintf(emsg,
+			    "Sorry, can not handle separated image with %s=%d",
+			    "InkSet", inkset);
+		    return 0;
+		}
+		if (td->td_samplesperpixel < 4) {
+		    sprintf(emsg,
+			    "Sorry, can not handle separated image with %s=%d",
+			    "Samples/pixel", td->td_samplesperpixel);
+		    return 0;
+		}
+		break;
+	}
+    case PHOTOMETRIC_LOGL:
+	if (td->td_compression != COMPRESSION_SGILOG) {
+	    sprintf(emsg, "Sorry, LogL data must have %s=%d",
+		"Compression", COMPRESSION_SGILOG);
+	    return (0);
+	}
+	break;
+    case PHOTOMETRIC_LOGLUV:
+	if (td->td_compression != COMPRESSION_SGILOG &&
+		td->td_compression != COMPRESSION_SGILOG24) {
+	    sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
+		"Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
+	    return (0);
+	}
+	if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
+	    sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
+		"Planarconfiguration", td->td_planarconfig);
+	    return (0);
+	}
+	break;
+    case PHOTOMETRIC_CIELAB:
+	break;
+    default:
+	sprintf(emsg, "Sorry, can not handle image with %s=%d",
+	    photoTag, photometric);
+	return (0);
+    }
+    return (1);
+}
+
+void
+TIFFRGBAImageEnd(TIFFRGBAImage* img)
+{
+	if (img->Map)
+		_TIFFfree(img->Map), img->Map = NULL;
+	if (img->BWmap)
+		_TIFFfree(img->BWmap), img->BWmap = NULL;
+	if (img->PALmap)
+		_TIFFfree(img->PALmap), img->PALmap = NULL;
+	if (img->ycbcr)
+		_TIFFfree(img->ycbcr), img->ycbcr = NULL;
+	if (img->cielab)
+		_TIFFfree(img->cielab), img->cielab = NULL;
+
+	if( img->redcmap ) {
+		_TIFFfree( img->redcmap );
+		_TIFFfree( img->greencmap );
+		_TIFFfree( img->bluecmap );
+	}
+}
+
+static int
+isCCITTCompression(TIFF* tif)
+{
+    uint16 compress;
+    TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
+    return (compress == COMPRESSION_CCITTFAX3 ||
+	    compress == COMPRESSION_CCITTFAX4 ||
+	    compress == COMPRESSION_CCITTRLE ||
+	    compress == COMPRESSION_CCITTRLEW);
+}
+
+int
+TIFFRGBAImageBegin(TIFFRGBAImage* img, TIFF* tif, int stop, char emsg[1024])
+{
+    uint16* sampleinfo;
+    uint16 extrasamples;
+    uint16 planarconfig;
+    uint16 compress;
+    int colorchannels;
+    uint16 *red_orig, *green_orig, *blue_orig;
+    int n_color;
+
+    /* Initialize to normal values */
+    img->row_offset = 0;
+    img->col_offset = 0;
+    img->redcmap = NULL;
+    img->greencmap = NULL;
+    img->bluecmap = NULL;
+    img->req_orientation = ORIENTATION_BOTLEFT;	    /* It is the default */
+    
+    img->tif = tif;
+    img->stoponerr = stop;
+    TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample);
+    switch (img->bitspersample) {
+    case 1: case 2: case 4:
+    case 8: case 16:
+	break;
+    default:
+	sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
+	    img->bitspersample);
+	return (0);
+    }
+    img->alpha = 0;
+    TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel);
+    TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
+	&extrasamples, &sampleinfo);
+    if (extrasamples >= 1)
+    {
+	switch (sampleinfo[0]) {
+	case EXTRASAMPLE_UNSPECIFIED:	/* Workaround for some images without */
+		if (img->samplesperpixel > 3)	/* correct info about alpha channel */
+			img->alpha = EXTRASAMPLE_ASSOCALPHA;
+		break;
+	case EXTRASAMPLE_ASSOCALPHA:	/* data is pre-multiplied */
+	case EXTRASAMPLE_UNASSALPHA:	/* data is not pre-multiplied */
+		img->alpha = sampleinfo[0];
+		break;
+	}
+    }
+
+#ifdef DEFAULT_EXTRASAMPLE_AS_ALPHA
+    if( !TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric))
+        img->photometric = PHOTOMETRIC_MINISWHITE;
+
+    if( extrasamples == 0 
+        && img->samplesperpixel == 4 
+        && img->photometric == PHOTOMETRIC_RGB )
+    {
+        img->alpha = EXTRASAMPLE_ASSOCALPHA;
+        extrasamples = 1;
+    }
+#endif
+
+    colorchannels = img->samplesperpixel - extrasamples;
+    TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &compress);
+    TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig);
+    if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) {
+	switch (colorchannels) {
+	case 1:
+	    if (isCCITTCompression(tif))
+		img->photometric = PHOTOMETRIC_MINISWHITE;
+	    else
+		img->photometric = PHOTOMETRIC_MINISBLACK;
+	    break;
+	case 3:
+	    img->photometric = PHOTOMETRIC_RGB;
+	    break;
+	default:
+	    sprintf(emsg, "Missing needed %s tag", photoTag);
+	    return (0);
+	}
+    }
+    switch (img->photometric) {
+    case PHOTOMETRIC_PALETTE:
+	if (!TIFFGetField(tif, TIFFTAG_COLORMAP,
+	    &red_orig, &green_orig, &blue_orig)) {
+	    sprintf(emsg, "Missing required \"Colormap\" tag");
+	    return (0);
+	}
+
+        /* copy the colormaps so we can modify them */
+        n_color = (1L << img->bitspersample);
+        img->redcmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
+        img->greencmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
+        img->bluecmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
+        if( !img->redcmap || !img->greencmap || !img->bluecmap ) {
+	    sprintf(emsg, "Out of memory for colormap copy");
+	    return (0);
+        }
+
+        _TIFFmemcpy( img->redcmap, red_orig, n_color * 2 );
+        _TIFFmemcpy( img->greencmap, green_orig, n_color * 2 );
+        _TIFFmemcpy( img->bluecmap, blue_orig, n_color * 2 );
+        
+	/* fall thru... */
+    case PHOTOMETRIC_MINISWHITE:
+    case PHOTOMETRIC_MINISBLACK:
+	if (planarconfig == PLANARCONFIG_CONTIG 
+            && img->samplesperpixel != 1
+            && img->bitspersample < 8 ) {
+	    sprintf(emsg,
+                    "Sorry, can not handle contiguous data with %s=%d, "
+                    "and %s=%d and Bits/Sample=%d",
+                    photoTag, img->photometric,
+                    "Samples/pixel", img->samplesperpixel,
+                    img->bitspersample);
+	    return (0);
+	}
+	break;
+    case PHOTOMETRIC_YCBCR:
+	if (planarconfig != PLANARCONFIG_CONTIG) {
+	    sprintf(emsg, "Sorry, can not handle YCbCr images with %s=%d",
+		"Planarconfiguration", planarconfig);
+	    return (0);
+	}
+	/* It would probably be nice to have a reality check here. */
+	if (planarconfig == PLANARCONFIG_CONTIG)
+	    /* can rely on libjpeg to convert to RGB */
+	    /* XXX should restore current state on exit */
+	    switch (compress) {
+		case COMPRESSION_OJPEG:
+		case COMPRESSION_JPEG:
+		    TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
+		    img->photometric = PHOTOMETRIC_RGB;
+                    break;
+
+                default:
+                    /* do nothing */;
+                    break;
+	    }
+	break;
+    case PHOTOMETRIC_RGB: 
+	if (colorchannels < 3) {
+	    sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
+		"Color channels", colorchannels);
+	    return (0);
+	}
+	break;
+    case PHOTOMETRIC_SEPARATED: {
+	uint16 inkset;
+	TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
+	if (inkset != INKSET_CMYK) {
+	    sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
+		"InkSet", inkset);
+	    return (0);
+	}
+	if (img->samplesperpixel < 4) {
+	    sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
+		"Samples/pixel", img->samplesperpixel);
+	    return (0);
+	}
+	break;
+    }
+    case PHOTOMETRIC_LOGL:
+	if (compress != COMPRESSION_SGILOG) {
+	    sprintf(emsg, "Sorry, LogL data must have %s=%d",
+		"Compression", COMPRESSION_SGILOG);
+	    return (0);
+	}
+	TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
+	img->photometric = PHOTOMETRIC_MINISBLACK;	/* little white lie */
+	img->bitspersample = 8;
+	break;
+    case PHOTOMETRIC_LOGLUV:
+	if (compress != COMPRESSION_SGILOG && compress != COMPRESSION_SGILOG24) {
+	    sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
+		"Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
+	    return (0);
+	}
+	if (planarconfig != PLANARCONFIG_CONTIG) {
+	    sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
+		"Planarconfiguration", planarconfig);
+	    return (0);
+	}
+	TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
+	img->photometric = PHOTOMETRIC_RGB;		/* little white lie */
+	img->bitspersample = 8;
+	break;
+    case PHOTOMETRIC_CIELAB:
+	break;
+    default:
+	sprintf(emsg, "Sorry, can not handle image with %s=%d",
+	    photoTag, img->photometric);
+	return (0);
+    }
+    img->Map = NULL;
+    img->BWmap = NULL;
+    img->PALmap = NULL;
+    img->ycbcr = NULL;
+    img->cielab = NULL;
+    TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width);
+    TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height);
+    TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation);
+    img->isContig =
+	!(planarconfig == PLANARCONFIG_SEPARATE && colorchannels > 1);
+    if (img->isContig) {
+	img->get = TIFFIsTiled(tif) ? gtTileContig : gtStripContig;
+	if (!pickTileContigCase(img)) {
+		sprintf(emsg, "Sorry, can not handle image");
+		return 0;
+	}
+    } else {
+	img->get = TIFFIsTiled(tif) ? gtTileSeparate : gtStripSeparate;
+	if (!pickTileSeparateCase(img)) {
+		sprintf(emsg, "Sorry, can not handle image");
+		return 0;
+	}
+    }
+    return 1;
+}
+
+int
+TIFFRGBAImageGet(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+    if (img->get == NULL) {
+		TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No \"get\" routine setup");
+		return (0);
+	}
+	if (img->put.any == NULL) {
+		TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif),
+		"No \"put\" routine setupl; probably can not handle image format");
+		return (0);
+    }
+    return (*img->get)(img, raster, w, h);
+}
+
+/*
+ * Read the specified image into an ABGR-format rastertaking in account
+ * specified orientation.
+ */
+int
+TIFFReadRGBAImageOriented(TIFF* tif,
+			  uint32 rwidth, uint32 rheight, uint32* raster,
+			  int orientation, int stop)
+{
+    char emsg[1024] = "";
+    TIFFRGBAImage img;
+    int ok;
+
+	if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, stop, emsg)) {
+		img.req_orientation = orientation;
+		/* XXX verify rwidth and rheight against width and height */
+		ok = TIFFRGBAImageGet(&img, raster+(rheight-img.height)*rwidth,
+			rwidth, img.height);
+		TIFFRGBAImageEnd(&img);
+	} else {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), emsg);
+		ok = 0;
+    }
+    return (ok);
+}
+
+/*
+ * Read the specified image into an ABGR-format raster. Use bottom left
+ * origin for raster by default.
+ */
+int
+TIFFReadRGBAImage(TIFF* tif,
+		  uint32 rwidth, uint32 rheight, uint32* raster, int stop)
+{
+	return TIFFReadRGBAImageOriented(tif, rwidth, rheight, raster,
+					 ORIENTATION_BOTLEFT, stop);
+}
+
+static int 
+setorientation(TIFFRGBAImage* img)
+{
+	switch (img->orientation) {
+		case ORIENTATION_TOPLEFT:
+		case ORIENTATION_LEFTTOP:
+			if (img->req_orientation == ORIENTATION_TOPRIGHT ||
+			    img->req_orientation == ORIENTATION_RIGHTTOP)
+				return FLIP_HORIZONTALLY;
+			else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
+			    img->req_orientation == ORIENTATION_RIGHTBOT)
+				return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+			else if (img->req_orientation == ORIENTATION_BOTLEFT ||
+			    img->req_orientation == ORIENTATION_LEFTBOT)
+				return FLIP_VERTICALLY;
+			else
+				return 0;
+		case ORIENTATION_TOPRIGHT:
+		case ORIENTATION_RIGHTTOP:
+			if (img->req_orientation == ORIENTATION_TOPLEFT ||
+			    img->req_orientation == ORIENTATION_LEFTTOP)
+				return FLIP_HORIZONTALLY;
+			else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
+			    img->req_orientation == ORIENTATION_RIGHTBOT)
+				return FLIP_VERTICALLY;
+			else if (img->req_orientation == ORIENTATION_BOTLEFT ||
+			    img->req_orientation == ORIENTATION_LEFTBOT)
+				return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+			else
+				return 0;
+		case ORIENTATION_BOTRIGHT:
+		case ORIENTATION_RIGHTBOT:
+			if (img->req_orientation == ORIENTATION_TOPLEFT ||
+			    img->req_orientation == ORIENTATION_LEFTTOP)
+				return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+			else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
+			    img->req_orientation == ORIENTATION_RIGHTTOP)
+				return FLIP_VERTICALLY;
+			else if (img->req_orientation == ORIENTATION_BOTLEFT ||
+			    img->req_orientation == ORIENTATION_LEFTBOT)
+				return FLIP_HORIZONTALLY;
+			else
+				return 0;
+		case ORIENTATION_BOTLEFT:
+		case ORIENTATION_LEFTBOT:
+			if (img->req_orientation == ORIENTATION_TOPLEFT ||
+			    img->req_orientation == ORIENTATION_LEFTTOP)
+				return FLIP_VERTICALLY;
+			else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
+			    img->req_orientation == ORIENTATION_RIGHTTOP)
+				return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
+			else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
+			    img->req_orientation == ORIENTATION_RIGHTBOT)
+				return FLIP_HORIZONTALLY;
+			else
+				return 0;
+		default:	/* NOTREACHED */
+			return 0;
+	}
+}
+
+/*
+ * Get an tile-organized image that has
+ *	PlanarConfiguration contiguous if SamplesPerPixel > 1
+ * or
+ *	SamplesPerPixel == 1
+ */	
+static int
+gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+    TIFF* tif = img->tif;
+    tileContigRoutine put = img->put.contig;
+    uint32 col, row, y, rowstoread;
+    uint32 pos;
+    uint32 tw, th;
+    unsigned char* buf;
+    int32 fromskew, toskew;
+    uint32 nrow;
+    int ret = 1, flip;
+
+    buf = (unsigned char*) _TIFFmalloc(TIFFTileSize(tif));
+    if (buf == 0) {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
+		return (0);
+    }
+    _TIFFmemset(buf, 0, TIFFTileSize(tif));
+    TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
+    TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
+
+    flip = setorientation(img);
+    if (flip & FLIP_VERTICALLY) {
+	    y = h - 1;
+	    toskew = -(int32)(tw + w);
+    }
+    else {
+	    y = 0;
+	    toskew = -(int32)(tw - w);
+    }
+     
+    for (row = 0; row < h; row += nrow)
+    {
+        rowstoread = th - (row + img->row_offset) % th;
+    	nrow = (row + rowstoread > h ? h - row : rowstoread);
+	for (col = 0; col < w; col += tw) 
+        {
+            if (TIFFReadTile(tif, buf, col+img->col_offset,
+                             row+img->row_offset, 0, 0) < 0 && img->stoponerr)
+            {
+                ret = 0;
+                break;
+            }
+	    
+            pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif);
+
+    	    if (col + tw > w) 
+            {
+                /*
+                 * Tile is clipped horizontally.  Calculate
+                 * visible portion and skewing factors.
+                 */
+                uint32 npix = w - col;
+                fromskew = tw - npix;
+                (*put)(img, raster+y*w+col, col, y,
+                       npix, nrow, fromskew, toskew + fromskew, buf + pos);
+            }
+            else 
+            {
+                (*put)(img, raster+y*w+col, col, y, tw, nrow, 0, toskew, buf + pos);
+            }
+        }
+
+        y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
+    }
+    _TIFFfree(buf);
+
+    if (flip & FLIP_HORIZONTALLY) {
+	    uint32 line;
+
+	    for (line = 0; line < h; line++) {
+		    uint32 *left = raster + (line * w);
+		    uint32 *right = left + w - 1;
+		    
+		    while ( left < right ) {
+			    uint32 temp = *left;
+			    *left = *right;
+			    *right = temp;
+			    left++, right--;
+		    }
+	    }
+    }
+
+    return (ret);
+}
+
+/*
+ * Get an tile-organized image that has
+ *	 SamplesPerPixel > 1
+ *	 PlanarConfiguration separated
+ * We assume that all such images are RGB.
+ */	
+static int
+gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+    TIFF* tif = img->tif;
+    tileSeparateRoutine put = img->put.separate;
+    uint32 col, row, y, rowstoread;
+    uint32 pos;
+    uint32 tw, th;
+    unsigned char* buf;
+    unsigned char* r;
+    unsigned char* g;
+    unsigned char* b;
+    unsigned char* a;
+    tsize_t tilesize;
+    int32 fromskew, toskew;
+    int alpha = img->alpha;
+    uint32 nrow;
+    int ret = 1, flip;
+
+    tilesize = TIFFTileSize(tif);
+    buf = (unsigned char*) _TIFFmalloc(4*tilesize);
+    if (buf == 0) {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
+		return (0);
+    }
+    _TIFFmemset(buf, 0, 4*tilesize);
+    r = buf;
+    g = r + tilesize;
+    b = g + tilesize;
+    a = b + tilesize;
+    if (!alpha)
+	_TIFFmemset(a, 0xff, tilesize);
+    TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
+    TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
+
+    flip = setorientation(img);
+    if (flip & FLIP_VERTICALLY) {
+	    y = h - 1;
+	    toskew = -(int32)(tw + w);
+    }
+    else {
+	    y = 0;
+	    toskew = -(int32)(tw - w);
+    }
+
+    for (row = 0; row < h; row += nrow) 
+    {
+        rowstoread = th - (row + img->row_offset) % th;
+    	nrow = (row + rowstoread > h ? h - row : rowstoread);
+        for (col = 0; col < w; col += tw) 
+        {
+            if (TIFFReadTile(tif, r, col+img->col_offset,
+                             row+img->row_offset,0,0) < 0 && img->stoponerr)
+            {
+                ret = 0;
+                break;
+            }
+            if (TIFFReadTile(tif, g, col+img->col_offset,
+                             row+img->row_offset,0,1) < 0 && img->stoponerr)
+            {
+                ret = 0;
+                break;
+            }
+            if (TIFFReadTile(tif, b, col+img->col_offset,
+                             row+img->row_offset,0,2) < 0 && img->stoponerr)
+            {
+                ret = 0;
+                break;
+            }
+            if (alpha && TIFFReadTile(tif,a,col+img->col_offset,
+                                      row+img->row_offset,0,3) < 0 && img->stoponerr)
+            {
+                ret = 0;
+                break;
+            }
+
+            pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif);
+
+            if (col + tw > w) 
+            {
+                /*
+                 * Tile is clipped horizontally.  Calculate
+                 * visible portion and skewing factors.
+                 */
+                uint32 npix = w - col;
+                fromskew = tw - npix;
+                (*put)(img, raster+y*w+col, col, y,
+                       npix, nrow, fromskew, toskew + fromskew, 
+                       r + pos, g + pos, b + pos, a + pos);
+            } else {
+                (*put)(img, raster+y*w+col, col, y,
+                       tw, nrow, 0, toskew, r + pos, g + pos, b + pos, a + pos);
+            }
+        }
+
+        y += (flip & FLIP_VERTICALLY ?-(int32) nrow : (int32) nrow);
+    }
+
+    if (flip & FLIP_HORIZONTALLY) {
+	    uint32 line;
+
+	    for (line = 0; line < h; line++) {
+		    uint32 *left = raster + (line * w);
+		    uint32 *right = left + w - 1;
+		    
+		    while ( left < right ) {
+			    uint32 temp = *left;
+			    *left = *right;
+			    *right = temp;
+			    left++, right--;
+		    }
+	    }
+    }
+
+    _TIFFfree(buf);
+    return (ret);
+}
+
+/*
+ * Get a strip-organized image that has
+ *	PlanarConfiguration contiguous if SamplesPerPixel > 1
+ * or
+ *	SamplesPerPixel == 1
+ */	
+static int
+gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+    TIFF* tif = img->tif;
+    tileContigRoutine put = img->put.contig;
+    uint32 row, y, nrow, rowstoread;
+    uint32 pos;
+    unsigned char* buf;
+    uint32 rowsperstrip;
+    uint32 imagewidth = img->width;
+    tsize_t scanline;
+    int32 fromskew, toskew;
+    int ret = 1, flip;
+
+    buf = (unsigned char*) _TIFFmalloc(TIFFStripSize(tif));
+    if (buf == 0) {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer");
+		return (0);
+    }
+    _TIFFmemset(buf, 0, TIFFStripSize(tif));
+
+    flip = setorientation(img);
+    if (flip & FLIP_VERTICALLY) {
+	    y = h - 1;
+	    toskew = -(int32)(w + w);
+    } else {
+	    y = 0;
+	    toskew = -(int32)(w - w);
+    }
+
+    TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
+    scanline = TIFFScanlineSize(tif);
+    fromskew = (w < imagewidth ? imagewidth - w : 0);
+    for (row = 0; row < h; row += nrow) 
+    {
+        rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
+        nrow = (row + rowstoread > h ? h - row : rowstoread);
+        if (TIFFReadEncodedStrip(tif,
+                                 TIFFComputeStrip(tif,row+img->row_offset, 0),
+                                 buf, 
+                                 ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0
+            && img->stoponerr)
+        {
+            ret = 0;
+            break;
+        }
+
+        pos = ((row + img->row_offset) % rowsperstrip) * scanline;
+        (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, buf + pos);
+        y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
+    }
+
+    if (flip & FLIP_HORIZONTALLY) {
+	    uint32 line;
+
+	    for (line = 0; line < h; line++) {
+		    uint32 *left = raster + (line * w);
+		    uint32 *right = left + w - 1;
+		    
+		    while ( left < right ) {
+			    uint32 temp = *left;
+			    *left = *right;
+			    *right = temp;
+			    left++, right--;
+		    }
+	    }
+    }
+
+    _TIFFfree(buf);
+    return (ret);
+}
+
+/*
+ * Get a strip-organized image with
+ *	 SamplesPerPixel > 1
+ *	 PlanarConfiguration separated
+ * We assume that all such images are RGB.
+ */
+static int
+gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
+{
+    TIFF* tif = img->tif;
+    tileSeparateRoutine put = img->put.separate;
+    unsigned char *buf;
+    unsigned char *r, *g, *b, *a;
+    uint32 row, y, nrow, rowstoread;
+    uint32 pos;
+    tsize_t scanline;
+    uint32 rowsperstrip, offset_row;
+    uint32 imagewidth = img->width;
+    tsize_t stripsize;
+    int32 fromskew, toskew;
+    int alpha = img->alpha;
+    int	ret = 1, flip;
+
+    stripsize = TIFFStripSize(tif);
+    r = buf = (unsigned char *)_TIFFmalloc(4*stripsize);
+    if (buf == 0) {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
+		return (0);
+    }
+    _TIFFmemset(buf, 0, 4*stripsize);
+    g = r + stripsize;
+    b = g + stripsize;
+    a = b + stripsize;
+    if (!alpha)
+	_TIFFmemset(a, 0xff, stripsize);
+
+    flip = setorientation(img);
+    if (flip & FLIP_VERTICALLY) {
+	    y = h - 1;
+	    toskew = -(int32)(w + w);
+    }
+    else {
+	    y = 0;
+	    toskew = -(int32)(w - w);
+    }
+
+    TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
+    scanline = TIFFScanlineSize(tif);
+    fromskew = (w < imagewidth ? imagewidth - w : 0);
+    for (row = 0; row < h; row += nrow) 
+    {
+        rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;    	
+        nrow = (row + rowstoread > h ? h - row : rowstoread);
+        offset_row = row + img->row_offset;
+    	if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0),
+                                 r, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0 
+            && img->stoponerr)
+        {
+            ret = 0;
+            break;
+        }
+        if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 1),
+                                 g, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0 
+            && img->stoponerr)
+        {
+            ret = 0;
+            break;
+        }
+        if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 2),
+                                 b, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0 
+            && img->stoponerr)
+        {
+            ret = 0;
+            break;
+        }
+        if (alpha &&
+            (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 3),
+                                  a, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0 
+             && img->stoponerr))
+        {
+            ret = 0;
+            break;
+        }
+
+        pos = ((row + img->row_offset) % rowsperstrip) * scanline;
+        (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, r + pos, g + pos, 
+               b + pos, a + pos);
+        y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
+    }
+
+    if (flip & FLIP_HORIZONTALLY) {
+	    uint32 line;
+
+	    for (line = 0; line < h; line++) {
+		    uint32 *left = raster + (line * w);
+		    uint32 *right = left + w - 1;
+		    
+		    while ( left < right ) {
+			    uint32 temp = *left;
+			    *left = *right;
+			    *right = temp;
+			    left++, right--;
+		    }
+	    }
+    }
+
+    _TIFFfree(buf);
+    return (ret);
+}
+
+/*
+ * The following routines move decoded data returned
+ * from the TIFF library into rasters filled with packed
+ * ABGR pixels (i.e. suitable for passing to lrecwrite.)
+ *
+ * The routines have been created according to the most
+ * important cases and optimized.  pickTileContigCase and
+ * pickTileSeparateCase analyze the parameters and select
+ * the appropriate "put" routine to use.
+ */
+#define	REPEAT8(op)	REPEAT4(op); REPEAT4(op)
+#define	REPEAT4(op)	REPEAT2(op); REPEAT2(op)
+#define	REPEAT2(op)	op; op
+#define	CASE8(x,op)			\
+    switch (x) {			\
+    case 7: op; case 6: op; case 5: op;	\
+    case 4: op; case 3: op; case 2: op;	\
+    case 1: op;				\
+    }
+#define	CASE4(x,op)	switch (x) { case 3: op; case 2: op; case 1: op; }
+#define	NOP
+
+#define	UNROLL8(w, op1, op2) {		\
+    uint32 _x;				\
+    for (_x = w; _x >= 8; _x -= 8) {	\
+	op1;				\
+	REPEAT8(op2);			\
+    }					\
+    if (_x > 0) {			\
+	op1;				\
+	CASE8(_x,op2);			\
+    }					\
+}
+#define	UNROLL4(w, op1, op2) {		\
+    uint32 _x;				\
+    for (_x = w; _x >= 4; _x -= 4) {	\
+	op1;				\
+	REPEAT4(op2);			\
+    }					\
+    if (_x > 0) {			\
+	op1;				\
+	CASE4(_x,op2);			\
+    }					\
+}
+#define	UNROLL2(w, op1, op2) {		\
+    uint32 _x;				\
+    for (_x = w; _x >= 2; _x -= 2) {	\
+	op1;				\
+	REPEAT2(op2);			\
+    }					\
+    if (_x) {				\
+	op1;				\
+	op2;				\
+    }					\
+}
+    
+#define	SKEW(r,g,b,skew)	{ r += skew; g += skew; b += skew; }
+#define	SKEW4(r,g,b,a,skew)	{ r += skew; g += skew; b += skew; a+= skew; }
+
+#define A1 (((uint32)0xffL)<<24)
+#define	PACK(r,g,b)	\
+	((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|A1)
+#define	PACK4(r,g,b,a)	\
+	((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|((uint32)(a)<<24))
+#define W2B(v) (((v)>>8)&0xff)
+#define	PACKW(r,g,b)	\
+	((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|A1)
+#define	PACKW4(r,g,b,a)	\
+	((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|((uint32)W2B(a)<<24))
+
+#define	DECLAREContigPutFunc(name) \
+static void name(\
+    TIFFRGBAImage* img, \
+    uint32* cp, \
+    uint32 x, uint32 y, \
+    uint32 w, uint32 h, \
+    int32 fromskew, int32 toskew, \
+    unsigned char* pp \
+)
+
+/*
+ * 8-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put8bitcmaptile)
+{
+    uint32** PALmap = img->PALmap;
+    int samplesperpixel = img->samplesperpixel;
+
+    (void) y;
+    while (h-- > 0) {
+	for (x = w; x-- > 0;)
+        {
+	    *cp++ = PALmap[*pp][0];
+            pp += samplesperpixel;
+        }
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 4-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put4bitcmaptile)
+{
+    uint32** PALmap = img->PALmap;
+
+    (void) x; (void) y;
+    fromskew /= 2;
+    while (h-- > 0) {
+	uint32* bw;
+	UNROLL2(w, bw = PALmap[*pp++], *cp++ = *bw++);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 2-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put2bitcmaptile)
+{
+    uint32** PALmap = img->PALmap;
+
+    (void) x; (void) y;
+    fromskew /= 4;
+    while (h-- > 0) {
+	uint32* bw;
+	UNROLL4(w, bw = PALmap[*pp++], *cp++ = *bw++);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 1-bit palette => colormap/RGB
+ */
+DECLAREContigPutFunc(put1bitcmaptile)
+{
+    uint32** PALmap = img->PALmap;
+
+    (void) x; (void) y;
+    fromskew /= 8;
+    while (h-- > 0) {
+	uint32* bw;
+	UNROLL8(w, bw = PALmap[*pp++], *cp++ = *bw++);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 8-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(putgreytile)
+{
+    int samplesperpixel = img->samplesperpixel;
+    uint32** BWmap = img->BWmap;
+
+    (void) y;
+    while (h-- > 0) {
+	for (x = w; x-- > 0;)
+        {
+	    *cp++ = BWmap[*pp][0];
+            pp += samplesperpixel;
+        }
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 16-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(put16bitbwtile)
+{
+    int samplesperpixel = img->samplesperpixel;
+    uint32** BWmap = img->BWmap;
+
+    (void) y;
+    while (h-- > 0) {
+        uint16 *wp = (uint16 *) pp;
+
+	for (x = w; x-- > 0;)
+        {
+            /* use high order byte of 16bit value */
+
+	    *cp++ = BWmap[*wp >> 8][0];
+            pp += 2 * samplesperpixel;
+            wp += samplesperpixel;
+        }
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 1-bit bilevel => colormap/RGB
+ */
+DECLAREContigPutFunc(put1bitbwtile)
+{
+    uint32** BWmap = img->BWmap;
+
+    (void) x; (void) y;
+    fromskew /= 8;
+    while (h-- > 0) {
+	uint32* bw;
+	UNROLL8(w, bw = BWmap[*pp++], *cp++ = *bw++);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 2-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(put2bitbwtile)
+{
+    uint32** BWmap = img->BWmap;
+
+    (void) x; (void) y;
+    fromskew /= 4;
+    while (h-- > 0) {
+	uint32* bw;
+	UNROLL4(w, bw = BWmap[*pp++], *cp++ = *bw++);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 4-bit greyscale => colormap/RGB
+ */
+DECLAREContigPutFunc(put4bitbwtile)
+{
+    uint32** BWmap = img->BWmap;
+
+    (void) x; (void) y;
+    fromskew /= 2;
+    while (h-- > 0) {
+	uint32* bw;
+	UNROLL2(w, bw = BWmap[*pp++], *cp++ = *bw++);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 8-bit packed samples, no Map => RGB
+ */
+DECLAREContigPutFunc(putRGBcontig8bittile)
+{
+    int samplesperpixel = img->samplesperpixel;
+
+    (void) x; (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	UNROLL8(w, NOP,
+	    *cp++ = PACK(pp[0], pp[1], pp[2]);
+	    pp += samplesperpixel);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 8-bit packed samples, w/ Map => RGB
+ */
+DECLAREContigPutFunc(putRGBcontig8bitMaptile)
+{
+    TIFFRGBValue* Map = img->Map;
+    int samplesperpixel = img->samplesperpixel;
+
+    (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	for (x = w; x-- > 0;) {
+	    *cp++ = PACK(Map[pp[0]], Map[pp[1]], Map[pp[2]]);
+	    pp += samplesperpixel;
+	}
+	pp += fromskew;
+	cp += toskew;
+    }
+}
+
+/*
+ * 8-bit packed samples => RGBA w/ associated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBAAcontig8bittile)
+{
+    int samplesperpixel = img->samplesperpixel;
+
+    (void) x; (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	UNROLL8(w, NOP,
+	    *cp++ = PACK4(pp[0], pp[1], pp[2], pp[3]);
+	    pp += samplesperpixel);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 8-bit packed samples => RGBA w/ unassociated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBUAcontig8bittile)
+{
+    int samplesperpixel = img->samplesperpixel;
+
+    (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	uint32 r, g, b, a;
+	for (x = w; x-- > 0;) {
+	    a = pp[3];
+	    r = (pp[0] * a) / 255;
+	    g = (pp[1] * a) / 255;
+	    b = (pp[2] * a) / 255;
+	    *cp++ = PACK4(r,g,b,a);
+	    pp += samplesperpixel;
+	}
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 16-bit packed samples => RGB
+ */
+DECLAREContigPutFunc(putRGBcontig16bittile)
+{
+    int samplesperpixel = img->samplesperpixel;
+    uint16 *wp = (uint16 *)pp;
+
+    (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	for (x = w; x-- > 0;) {
+	    *cp++ = PACKW(wp[0], wp[1], wp[2]);
+	    wp += samplesperpixel;
+	}
+	cp += toskew;
+	wp += fromskew;
+    }
+}
+
+/*
+ * 16-bit packed samples => RGBA w/ associated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBAAcontig16bittile)
+{
+    int samplesperpixel = img->samplesperpixel;
+    uint16 *wp = (uint16 *)pp;
+
+    (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	for (x = w; x-- > 0;) {
+	    *cp++ = PACKW4(wp[0], wp[1], wp[2], wp[3]);
+	    wp += samplesperpixel;
+	}
+	cp += toskew;
+	wp += fromskew;
+    }
+}
+
+/*
+ * 16-bit packed samples => RGBA w/ unassociated alpha
+ * (known to have Map == NULL)
+ */
+DECLAREContigPutFunc(putRGBUAcontig16bittile)
+{
+    int samplesperpixel = img->samplesperpixel;
+    uint16 *wp = (uint16 *)pp;
+
+    (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	uint32 r,g,b,a;
+	/*
+	 * We shift alpha down four bits just in case unsigned
+	 * arithmetic doesn't handle the full range.
+	 * We still have plenty of accuracy, since the output is 8 bits.
+	 * So we have (r * 0xffff) * (a * 0xfff)) = r*a * (0xffff*0xfff)
+	 * Since we want r*a * 0xff for eight bit output,
+	 * we divide by (0xffff * 0xfff) / 0xff == 0x10eff.
+	 */
+	for (x = w; x-- > 0;) {
+	    a = wp[3] >> 4; 
+	    r = (wp[0] * a) / 0x10eff;
+	    g = (wp[1] * a) / 0x10eff;
+	    b = (wp[2] * a) / 0x10eff;
+	    *cp++ = PACK4(r,g,b,a);
+	    wp += samplesperpixel;
+	}
+	cp += toskew;
+	wp += fromskew;
+    }
+}
+
+/*
+ * 8-bit packed CMYK samples w/o Map => RGB
+ *
+ * NB: The conversion of CMYK->RGB is *very* crude.
+ */
+DECLAREContigPutFunc(putRGBcontig8bitCMYKtile)
+{
+    int samplesperpixel = img->samplesperpixel;
+    uint16 r, g, b, k;
+
+    (void) x; (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	UNROLL8(w, NOP,
+	    k = 255 - pp[3];
+	    r = (k*(255-pp[0]))/255;
+	    g = (k*(255-pp[1]))/255;
+	    b = (k*(255-pp[2]))/255;
+	    *cp++ = PACK(r, g, b);
+	    pp += samplesperpixel);
+	cp += toskew;
+	pp += fromskew;
+    }
+}
+
+/*
+ * 8-bit packed CMYK samples w/Map => RGB
+ *
+ * NB: The conversion of CMYK->RGB is *very* crude.
+ */
+DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile)
+{
+    int samplesperpixel = img->samplesperpixel;
+    TIFFRGBValue* Map = img->Map;
+    uint16 r, g, b, k;
+
+    (void) y;
+    fromskew *= samplesperpixel;
+    while (h-- > 0) {
+	for (x = w; x-- > 0;) {
+	    k = 255 - pp[3];
+	    r = (k*(255-pp[0]))/255;
+	    g = (k*(255-pp[1]))/255;
+	    b = (k*(255-pp[2]))/255;
+	    *cp++ = PACK(Map[r], Map[g], Map[b]);
+	    pp += samplesperpixel;
+	}
+	pp += fromskew;
+	cp += toskew;
+    }
+}
+
+#define	DECLARESepPutFunc(name) \
+static void name(\
+    TIFFRGBAImage* img,\
+    uint32* cp,\
+    uint32 x, uint32 y, \
+    uint32 w, uint32 h,\
+    int32 fromskew, int32 toskew,\
+    unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a\
+)
+
+/*
+ * 8-bit unpacked samples => RGB
+ */
+DECLARESepPutFunc(putRGBseparate8bittile)
+{
+    (void) img; (void) x; (void) y; (void) a;
+    while (h-- > 0) {
+	UNROLL8(w, NOP, *cp++ = PACK(*r++, *g++, *b++));
+	SKEW(r, g, b, fromskew);
+	cp += toskew;
+    }
+}
+
+/*
+ * 8-bit unpacked samples => RGB
+ */
+DECLARESepPutFunc(putRGBseparate8bitMaptile)
+{
+    TIFFRGBValue* Map = img->Map;
+
+    (void) y; (void) a;
+    while (h-- > 0) {
+	for (x = w; x > 0; x--)
+	    *cp++ = PACK(Map[*r++], Map[*g++], Map[*b++]);
+	SKEW(r, g, b, fromskew);
+	cp += toskew;
+    }
+}
+
+/*
+ * 8-bit unpacked samples => RGBA w/ associated alpha
+ */
+DECLARESepPutFunc(putRGBAAseparate8bittile)
+{
+    (void) img; (void) x; (void) y;
+    while (h-- > 0) {
+	UNROLL8(w, NOP, *cp++ = PACK4(*r++, *g++, *b++, *a++));
+	SKEW4(r, g, b, a, fromskew);
+	cp += toskew;
+    }
+}
+
+/*
+ * 8-bit unpacked samples => RGBA w/ unassociated alpha
+ */
+DECLARESepPutFunc(putRGBUAseparate8bittile)
+{
+    (void) img; (void) y;
+    while (h-- > 0) {
+	uint32 rv, gv, bv, av;
+	for (x = w; x-- > 0;) {
+	    av = *a++;
+	    rv = (*r++ * av) / 255;
+	    gv = (*g++ * av) / 255;
+	    bv = (*b++ * av) / 255;
+	    *cp++ = PACK4(rv,gv,bv,av);
+	}
+	SKEW4(r, g, b, a, fromskew);
+	cp += toskew;
+    }
+}
+
+/*
+ * 16-bit unpacked samples => RGB
+ */
+DECLARESepPutFunc(putRGBseparate16bittile)
+{
+    uint16 *wr = (uint16*) r;
+    uint16 *wg = (uint16*) g;
+    uint16 *wb = (uint16*) b;
+
+    (void) img; (void) y; (void) a;
+    while (h-- > 0) {
+	for (x = 0; x < w; x++)
+	    *cp++ = PACKW(*wr++, *wg++, *wb++);
+	SKEW(wr, wg, wb, fromskew);
+	cp += toskew;
+    }
+}
+
+/*
+ * 16-bit unpacked samples => RGBA w/ associated alpha
+ */
+DECLARESepPutFunc(putRGBAAseparate16bittile)
+{
+    uint16 *wr = (uint16*) r;
+    uint16 *wg = (uint16*) g;
+    uint16 *wb = (uint16*) b;
+    uint16 *wa = (uint16*) a;
+
+    (void) img; (void) y;
+    while (h-- > 0) {
+	for (x = 0; x < w; x++)
+	    *cp++ = PACKW4(*wr++, *wg++, *wb++, *wa++);
+	SKEW4(wr, wg, wb, wa, fromskew);
+	cp += toskew;
+    }
+}
+
+/*
+ * 16-bit unpacked samples => RGBA w/ unassociated alpha
+ */
+DECLARESepPutFunc(putRGBUAseparate16bittile)
+{
+    uint16 *wr = (uint16*) r;
+    uint16 *wg = (uint16*) g;
+    uint16 *wb = (uint16*) b;
+    uint16 *wa = (uint16*) a;
+
+    (void) img; (void) y;
+    while (h-- > 0) {
+	uint32 r,g,b,a;
+	/*
+	 * We shift alpha down four bits just in case unsigned
+	 * arithmetic doesn't handle the full range.
+	 * We still have plenty of accuracy, since the output is 8 bits.
+	 * So we have (r * 0xffff) * (a * 0xfff)) = r*a * (0xffff*0xfff)
+	 * Since we want r*a * 0xff for eight bit output,
+	 * we divide by (0xffff * 0xfff) / 0xff == 0x10eff.
+	 */
+	for (x = w; x-- > 0;) {
+	    a = *wa++ >> 4; 
+	    r = (*wr++ * a) / 0x10eff;
+	    g = (*wg++ * a) / 0x10eff;
+	    b = (*wb++ * a) / 0x10eff;
+	    *cp++ = PACK4(r,g,b,a);
+	}
+	SKEW4(wr, wg, wb, wa, fromskew);
+	cp += toskew;
+    }
+}
+
+/*
+ * 8-bit packed CIE L*a*b 1976 samples => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitCIELab)
+{
+	float X, Y, Z;
+	uint32 r, g, b;
+	(void) y;
+	fromskew *= 3;
+	while (h-- > 0) {
+		for (x = w; x-- > 0;) {
+			TIFFCIELabToXYZ(img->cielab,
+					(unsigned char)pp[0],
+					(signed char)pp[1],
+					(signed char)pp[2],
+					&X, &Y, &Z);
+			TIFFXYZToRGB(img->cielab, X, Y, Z, &r, &g, &b);
+			*cp++ = PACK(r, g, b);
+			pp += 3;
+		}
+		cp += toskew;
+		pp += fromskew;
+	}
+}
+
+/*
+ * YCbCr -> RGB conversion and packing routines.
+ */
+
+#define	YCbCrtoRGB(dst, Y) {						\
+	uint32 r, g, b;							\
+	TIFFYCbCrtoRGB(img->ycbcr, (Y), Cb, Cr, &r, &g, &b);		\
+	dst = PACK(r, g, b);						\
+}
+
+/*
+ * 8-bit packed YCbCr samples => RGB 
+ * This function is generic for different sampling sizes, 
+ * and can handle blocks sizes that aren't multiples of the
+ * sampling size.  However, it is substantially less optimized
+ * than the specific sampling cases.  It is used as a fallback
+ * for difficult blocks.
+ */
+#ifdef notdef
+static void putcontig8bitYCbCrGenericTile( 
+    TIFFRGBAImage* img, 
+    uint32* cp, 
+    uint32 x, uint32 y, 
+    uint32 w, uint32 h, 
+    int32 fromskew, int32 toskew, 
+    unsigned char* pp,
+    int h_group, 
+    int v_group )
+
+{
+    uint32* cp1 = cp+w+toskew;
+    uint32* cp2 = cp1+w+toskew;
+    uint32* cp3 = cp2+w+toskew;
+    int32 incr = 3*w+4*toskew;
+    int32   Cb, Cr;
+    int     group_size = v_group * h_group + 2;
+
+    (void) y;
+    fromskew = (fromskew * group_size) / h_group;
+
+    for( yy = 0; yy < h; yy++ )
+    {
+        unsigned char *pp_line;
+        int     y_line_group = yy / v_group;
+        int     y_remainder = yy - y_line_group * v_group;
+
+        pp_line = pp + v_line_group * 
+
+        
+        for( xx = 0; xx < w; xx++ )
+        {
+            Cb = pp
+        }
+    }
+    for (; h >= 4; h -= 4) {
+	x = w>>2;
+	do {
+	    Cb = pp[16];
+	    Cr = pp[17];
+
+	    YCbCrtoRGB(cp [0], pp[ 0]);
+	    YCbCrtoRGB(cp [1], pp[ 1]);
+	    YCbCrtoRGB(cp [2], pp[ 2]);
+	    YCbCrtoRGB(cp [3], pp[ 3]);
+	    YCbCrtoRGB(cp1[0], pp[ 4]);
+	    YCbCrtoRGB(cp1[1], pp[ 5]);
+	    YCbCrtoRGB(cp1[2], pp[ 6]);
+	    YCbCrtoRGB(cp1[3], pp[ 7]);
+	    YCbCrtoRGB(cp2[0], pp[ 8]);
+	    YCbCrtoRGB(cp2[1], pp[ 9]);
+	    YCbCrtoRGB(cp2[2], pp[10]);
+	    YCbCrtoRGB(cp2[3], pp[11]);
+	    YCbCrtoRGB(cp3[0], pp[12]);
+	    YCbCrtoRGB(cp3[1], pp[13]);
+	    YCbCrtoRGB(cp3[2], pp[14]);
+	    YCbCrtoRGB(cp3[3], pp[15]);
+
+	    cp += 4, cp1 += 4, cp2 += 4, cp3 += 4;
+	    pp += 18;
+	} while (--x);
+	cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
+	pp += fromskew;
+    }
+}
+#endif
+
+/*
+ * 8-bit packed YCbCr samples w/ 4,4 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr44tile)
+{
+    uint32* cp1 = cp+w+toskew;
+    uint32* cp2 = cp1+w+toskew;
+    uint32* cp3 = cp2+w+toskew;
+    int32 incr = 3*w+4*toskew;
+
+    (void) y;
+    /* adjust fromskew */
+    fromskew = (fromskew * 18) / 4;
+    if ((h & 3) == 0 && (w & 3) == 0) {				        
+        for (; h >= 4; h -= 4) {
+            x = w>>2;
+            do {
+                int32 Cb = pp[16];
+                int32 Cr = pp[17];
+
+                YCbCrtoRGB(cp [0], pp[ 0]);
+                YCbCrtoRGB(cp [1], pp[ 1]);
+                YCbCrtoRGB(cp [2], pp[ 2]);
+                YCbCrtoRGB(cp [3], pp[ 3]);
+                YCbCrtoRGB(cp1[0], pp[ 4]);
+                YCbCrtoRGB(cp1[1], pp[ 5]);
+                YCbCrtoRGB(cp1[2], pp[ 6]);
+                YCbCrtoRGB(cp1[3], pp[ 7]);
+                YCbCrtoRGB(cp2[0], pp[ 8]);
+                YCbCrtoRGB(cp2[1], pp[ 9]);
+                YCbCrtoRGB(cp2[2], pp[10]);
+                YCbCrtoRGB(cp2[3], pp[11]);
+                YCbCrtoRGB(cp3[0], pp[12]);
+                YCbCrtoRGB(cp3[1], pp[13]);
+                YCbCrtoRGB(cp3[2], pp[14]);
+                YCbCrtoRGB(cp3[3], pp[15]);
+
+                cp += 4, cp1 += 4, cp2 += 4, cp3 += 4;
+                pp += 18;
+            } while (--x);
+            cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
+            pp += fromskew;
+        }
+    } else {
+        while (h > 0) {
+            for (x = w; x > 0;) {
+                int32 Cb = pp[16];
+                int32 Cr = pp[17];
+                switch (x) {
+                default:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp3[3], pp[15]); /* FALLTHROUGH */
+                    case 3:  YCbCrtoRGB(cp2[3], pp[11]); /* FALLTHROUGH */
+                    case 2:  YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                case 3:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp3[2], pp[14]); /* FALLTHROUGH */
+                    case 3:  YCbCrtoRGB(cp2[2], pp[10]); /* FALLTHROUGH */
+                    case 2:  YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                case 2:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp3[1], pp[13]); /* FALLTHROUGH */
+                    case 3:  YCbCrtoRGB(cp2[1], pp[ 9]); /* FALLTHROUGH */
+                    case 2:  YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                case 1:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp3[0], pp[12]); /* FALLTHROUGH */
+                    case 3:  YCbCrtoRGB(cp2[0], pp[ 8]); /* FALLTHROUGH */
+                    case 2:  YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                }
+                if (x < 4) {
+                    cp += x; cp1 += x; cp2 += x; cp3 += x;
+                    x = 0;
+                }
+                else {
+                    cp += 4; cp1 += 4; cp2 += 4; cp3 += 4;
+                    x -= 4;
+                }
+                pp += 18;
+            }
+            if (h <= 4)
+                break;
+            h -= 4;
+            cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
+            pp += fromskew;
+        }
+    }
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 4,2 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr42tile)
+{
+    uint32* cp1 = cp+w+toskew;
+    int32 incr = 2*toskew+w;
+
+    (void) y;
+    fromskew = (fromskew * 10) / 4;
+    if ((h & 3) == 0 && (w & 1) == 0) {
+        for (; h >= 2; h -= 2) {
+            x = w>>2;
+            do {
+                int32 Cb = pp[8];
+                int32 Cr = pp[9];
+                
+                YCbCrtoRGB(cp [0], pp[0]);
+                YCbCrtoRGB(cp [1], pp[1]);
+                YCbCrtoRGB(cp [2], pp[2]);
+                YCbCrtoRGB(cp [3], pp[3]);
+                YCbCrtoRGB(cp1[0], pp[4]);
+                YCbCrtoRGB(cp1[1], pp[5]);
+                YCbCrtoRGB(cp1[2], pp[6]);
+                YCbCrtoRGB(cp1[3], pp[7]);
+                
+                cp += 4, cp1 += 4;
+                pp += 10;
+            } while (--x);
+            cp += incr, cp1 += incr;
+            pp += fromskew;
+        }
+    } else {
+        while (h > 0) {
+            for (x = w; x > 0;) {
+                int32 Cb = pp[8];
+                int32 Cr = pp[9];
+                switch (x) {
+                default:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                case 3:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                case 2:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                case 1:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                }
+                if (x < 4) {
+                    cp += x; cp1 += x;
+                    x = 0;
+                }
+                else {
+                    cp += 4; cp1 += 4;
+                    x -= 4;
+                }
+                pp += 10;
+            }
+            if (h <= 2)
+                break;
+            h -= 2;
+            cp += incr, cp1 += incr;
+            pp += fromskew;
+        }
+    }
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 4,1 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr41tile)
+{
+    (void) y;
+    /* XXX adjust fromskew */
+    do {
+	x = w>>2;
+	do {
+	    int32 Cb = pp[4];
+	    int32 Cr = pp[5];
+
+	    YCbCrtoRGB(cp [0], pp[0]);
+	    YCbCrtoRGB(cp [1], pp[1]);
+	    YCbCrtoRGB(cp [2], pp[2]);
+	    YCbCrtoRGB(cp [3], pp[3]);
+
+	    cp += 4;
+	    pp += 6;
+	} while (--x);
+
+        if( (w&3) != 0 )
+        {
+	    int32 Cb = pp[4];
+	    int32 Cr = pp[5];
+
+            switch( (w&3) ) {
+              case 3: YCbCrtoRGB(cp [2], pp[2]);
+              case 2: YCbCrtoRGB(cp [1], pp[1]);
+              case 1: YCbCrtoRGB(cp [0], pp[0]);
+              case 0: break;
+            }
+
+            cp += (w&3);
+            pp += 6;
+        }
+
+	cp += toskew;
+	pp += fromskew;
+    } while (--h);
+
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 2,2 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr22tile)
+{
+    uint32* cp1 = cp+w+toskew;
+    int32 incr = 2*toskew+w;
+
+    (void) y;
+    fromskew = (fromskew * 6) / 2;
+    if ((h & 1) == 0 && (w & 1) == 0) {
+        for (; h >= 2; h -= 2) {
+            x = w>>1;
+            do {
+                int32 Cb = pp[4];
+                int32 Cr = pp[5];
+
+                YCbCrtoRGB(cp [0], pp[0]);
+                YCbCrtoRGB(cp [1], pp[1]);
+                YCbCrtoRGB(cp1[0], pp[2]);
+                YCbCrtoRGB(cp1[1], pp[3]);
+
+                cp += 2, cp1 += 2;
+                pp += 6;
+            } while (--x);
+            cp += incr, cp1 += incr;
+            pp += fromskew;
+        }
+    } else {
+        while (h > 0) {
+            for (x = w; x > 0;) {
+                int32 Cb = pp[4];
+                int32 Cr = pp[5];
+                switch (x) {
+                default:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp1[1], pp[ 3]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                case 1:
+                    switch (h) {
+                    default: YCbCrtoRGB(cp1[0], pp[ 2]); /* FALLTHROUGH */
+                    case 1:  YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
+                    }                                    /* FALLTHROUGH */
+                }
+                if (x < 2) {
+                    cp += x; cp1 += x;
+                    x = 0;
+                }
+                else {
+                    cp += 2; cp1 += 2;
+                    x -= 2;
+                }
+                pp += 6;
+            }
+            if (h <= 2)
+                break;
+            h -= 2;
+            cp += incr, cp1 += incr;
+            pp += fromskew;
+        }
+    }
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ 2,1 subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr21tile)
+{
+    (void) y;
+    fromskew = (fromskew * 4) / 2;
+    do {
+	x = w>>1;
+	do {
+	    int32 Cb = pp[2];
+	    int32 Cr = pp[3];
+
+	    YCbCrtoRGB(cp[0], pp[0]); 
+	    YCbCrtoRGB(cp[1], pp[1]);
+
+	    cp += 2;
+	    pp += 4;
+	} while (--x);
+
+        if( (w&1) != 0 )
+        {
+	    int32 Cb = pp[2];
+	    int32 Cr = pp[3];
+            
+            YCbCrtoRGB(cp [0], pp[0]);
+
+	    cp += 1;
+	    pp += 4;
+        }
+
+	cp += toskew;
+	pp += fromskew;
+    } while (--h);
+}
+
+/*
+ * 8-bit packed YCbCr samples w/ no subsampling => RGB
+ */
+DECLAREContigPutFunc(putcontig8bitYCbCr11tile)
+{
+    (void) y;
+    fromskew *= 3;
+    do {
+        x = w; /* was x = w>>1; patched 2000/09/25 warmerda@home.com */ 
+	do {
+	    int32 Cb = pp[1];
+	    int32 Cr = pp[2];
+
+	    YCbCrtoRGB(*cp++, pp[0]);
+
+	    pp += 3;
+	} while (--x);
+	cp += toskew;
+	pp += fromskew;
+    } while (--h);
+}
+#undef	YCbCrtoRGB
+
+static tileContigRoutine
+initYCbCrConversion(TIFFRGBAImage* img)
+{
+	static char module[] = "initCIELabConversion";
+
+	float *luma, *refBlackWhite;
+	uint16 hs, vs;
+
+	if (img->ycbcr == NULL) {
+	    img->ycbcr = (TIFFYCbCrToRGB*) _TIFFmalloc(
+		    TIFFroundup(sizeof (TIFFYCbCrToRGB), sizeof (long))
+		    + 4*256*sizeof (TIFFRGBValue)
+		    + 2*256*sizeof (int)
+		    + 3*256*sizeof (int32)
+	    );
+	    if (img->ycbcr == NULL) {
+			TIFFErrorExt(img->tif->tif_clientdata, module,
+			      "No space for YCbCr->RGB conversion state");
+		    return (NULL);
+	    }
+	}
+
+	TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRCOEFFICIENTS, &luma);
+	TIFFGetFieldDefaulted(img->tif, TIFFTAG_REFERENCEBLACKWHITE,
+			      &refBlackWhite);
+	if (TIFFYCbCrToRGBInit(img->ycbcr, luma, refBlackWhite) < 0)
+		return NULL;
+
+	/*
+	 * The 6.0 spec says that subsampling must be
+	 * one of 1, 2, or 4, and that vertical subsampling
+	 * must always be <= horizontal subsampling; so
+	 * there are only a few possibilities and we just
+	 * enumerate the cases.
+	 */
+	TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &hs, &vs);
+	switch ((hs<<4)|vs) {
+		case 0x44: return (putcontig8bitYCbCr44tile);
+		case 0x42: return (putcontig8bitYCbCr42tile);
+		case 0x41: return (putcontig8bitYCbCr41tile);
+		case 0x22: return (putcontig8bitYCbCr22tile);
+		case 0x21: return (putcontig8bitYCbCr21tile);
+		case 0x11: return (putcontig8bitYCbCr11tile);
+	}
+
+	return (NULL);
+}
+
+static tileContigRoutine
+initCIELabConversion(TIFFRGBAImage* img)
+{
+	static char module[] = "initCIELabConversion";
+
+	float   *whitePoint;
+	float   refWhite[3];
+
+	if (!img->cielab) {
+		img->cielab = (TIFFCIELabToRGB *)
+			_TIFFmalloc(sizeof(TIFFCIELabToRGB));
+		if (!img->cielab) {
+			TIFFErrorExt(img->tif->tif_clientdata, module,
+			    "No space for CIE L*a*b*->RGB conversion state.");
+			return NULL;
+		}
+	}
+
+	TIFFGetFieldDefaulted(img->tif, TIFFTAG_WHITEPOINT, &whitePoint);
+	refWhite[1] = 100.0F;
+	refWhite[0] = whitePoint[0] / whitePoint[1] * refWhite[1];
+	refWhite[2] = (1.0F - whitePoint[0] - whitePoint[1])
+		      / whitePoint[1] * refWhite[1];
+	if (TIFFCIELabToRGBInit(img->cielab, &display_sRGB, refWhite) < 0) {
+		TIFFErrorExt(img->tif->tif_clientdata, module,
+		    "Failed to initialize CIE L*a*b*->RGB conversion state.");
+		_TIFFfree(img->cielab);
+		return NULL;
+	}
+
+	return putcontig8bitCIELab;
+}
+
+/*
+ * Greyscale images with less than 8 bits/sample are handled
+ * with a table to avoid lots of shifts and masks.  The table
+ * is setup so that put*bwtile (below) can retrieve 8/bitspersample
+ * pixel values simply by indexing into the table with one
+ * number.
+ */
+static int
+makebwmap(TIFFRGBAImage* img)
+{
+    TIFFRGBValue* Map = img->Map;
+    int bitspersample = img->bitspersample;
+    int nsamples = 8 / bitspersample;
+    int i;
+    uint32* p;
+
+    if( nsamples == 0 )
+        nsamples = 1;
+
+    img->BWmap = (uint32**) _TIFFmalloc(
+	256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
+    if (img->BWmap == NULL) {
+		TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for B&W mapping table");
+		return (0);
+    }
+    p = (uint32*)(img->BWmap + 256);
+    for (i = 0; i < 256; i++) {
+	TIFFRGBValue c;
+	img->BWmap[i] = p;
+	switch (bitspersample) {
+#define	GREY(x)	c = Map[x]; *p++ = PACK(c,c,c);
+	case 1:
+	    GREY(i>>7);
+	    GREY((i>>6)&1);
+	    GREY((i>>5)&1);
+	    GREY((i>>4)&1);
+	    GREY((i>>3)&1);
+	    GREY((i>>2)&1);
+	    GREY((i>>1)&1);
+	    GREY(i&1);
+	    break;
+	case 2:
+	    GREY(i>>6);
+	    GREY((i>>4)&3);
+	    GREY((i>>2)&3);
+	    GREY(i&3);
+	    break;
+	case 4:
+	    GREY(i>>4);
+	    GREY(i&0xf);
+	    break;
+	case 8:
+        case 16:
+	    GREY(i);
+	    break;
+	}
+#undef	GREY
+    }
+    return (1);
+}
+
+/*
+ * Construct a mapping table to convert from the range
+ * of the data samples to [0,255] --for display.  This
+ * process also handles inverting B&W images when needed.
+ */ 
+static int
+setupMap(TIFFRGBAImage* img)
+{
+    int32 x, range;
+
+    range = (int32)((1L<<img->bitspersample)-1);
+    
+    /* treat 16 bit the same as eight bit */
+    if( img->bitspersample == 16 )
+        range = (int32) 255;
+
+    img->Map = (TIFFRGBValue*) _TIFFmalloc((range+1) * sizeof (TIFFRGBValue));
+    if (img->Map == NULL) {
+		TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif),
+			"No space for photometric conversion table");
+		return (0);
+    }
+    if (img->photometric == PHOTOMETRIC_MINISWHITE) {
+	for (x = 0; x <= range; x++)
+	    img->Map[x] = (TIFFRGBValue) (((range - x) * 255) / range);
+    } else {
+	for (x = 0; x <= range; x++)
+	    img->Map[x] = (TIFFRGBValue) ((x * 255) / range);
+    }
+    if (img->bitspersample <= 16 &&
+	(img->photometric == PHOTOMETRIC_MINISBLACK ||
+	 img->photometric == PHOTOMETRIC_MINISWHITE)) {
+	/*
+	 * Use photometric mapping table to construct
+	 * unpacking tables for samples <= 8 bits.
+	 */
+	if (!makebwmap(img))
+	    return (0);
+	/* no longer need Map, free it */
+	_TIFFfree(img->Map), img->Map = NULL;
+    }
+    return (1);
+}
+
+static int
+checkcmap(TIFFRGBAImage* img)
+{
+    uint16* r = img->redcmap;
+    uint16* g = img->greencmap;
+    uint16* b = img->bluecmap;
+    long n = 1L<<img->bitspersample;
+
+    while (n-- > 0)
+	if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
+	    return (16);
+    return (8);
+}
+
+static void
+cvtcmap(TIFFRGBAImage* img)
+{
+    uint16* r = img->redcmap;
+    uint16* g = img->greencmap;
+    uint16* b = img->bluecmap;
+    long i;
+
+    for (i = (1L<<img->bitspersample)-1; i >= 0; i--) {
+#define	CVT(x)		((uint16)((x)>>8))
+	r[i] = CVT(r[i]);
+	g[i] = CVT(g[i]);
+	b[i] = CVT(b[i]);
+#undef	CVT
+    }
+}
+
+/*
+ * Palette images with <= 8 bits/sample are handled
+ * with a table to avoid lots of shifts and masks.  The table
+ * is setup so that put*cmaptile (below) can retrieve 8/bitspersample
+ * pixel values simply by indexing into the table with one
+ * number.
+ */
+static int
+makecmap(TIFFRGBAImage* img)
+{
+    int bitspersample = img->bitspersample;
+    int nsamples = 8 / bitspersample;
+    uint16* r = img->redcmap;
+    uint16* g = img->greencmap;
+    uint16* b = img->bluecmap;
+    uint32 *p;
+    int i;
+
+    img->PALmap = (uint32**) _TIFFmalloc(
+	256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
+    if (img->PALmap == NULL) {
+		TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for Palette mapping table");
+		return (0);
+	}
+    p = (uint32*)(img->PALmap + 256);
+    for (i = 0; i < 256; i++) {
+	TIFFRGBValue c;
+	img->PALmap[i] = p;
+#define	CMAP(x)	c = (TIFFRGBValue) x; *p++ = PACK(r[c]&0xff, g[c]&0xff, b[c]&0xff);
+	switch (bitspersample) {
+	case 1:
+	    CMAP(i>>7);
+	    CMAP((i>>6)&1);
+	    CMAP((i>>5)&1);
+	    CMAP((i>>4)&1);
+	    CMAP((i>>3)&1);
+	    CMAP((i>>2)&1);
+	    CMAP((i>>1)&1);
+	    CMAP(i&1);
+	    break;
+	case 2:
+	    CMAP(i>>6);
+	    CMAP((i>>4)&3);
+	    CMAP((i>>2)&3);
+	    CMAP(i&3);
+	    break;
+	case 4:
+	    CMAP(i>>4);
+	    CMAP(i&0xf);
+	    break;
+	case 8:
+	    CMAP(i);
+	    break;
+	}
+#undef CMAP
+    }
+    return (1);
+}
+
+/* 
+ * Construct any mapping table used
+ * by the associated put routine.
+ */
+static int
+buildMap(TIFFRGBAImage* img)
+{
+    switch (img->photometric) {
+    case PHOTOMETRIC_RGB:
+    case PHOTOMETRIC_YCBCR:
+    case PHOTOMETRIC_SEPARATED:
+	if (img->bitspersample == 8)
+	    break;
+	/* fall thru... */
+    case PHOTOMETRIC_MINISBLACK:
+    case PHOTOMETRIC_MINISWHITE:
+	if (!setupMap(img))
+	    return (0);
+	break;
+    case PHOTOMETRIC_PALETTE:
+	/*
+	 * Convert 16-bit colormap to 8-bit (unless it looks
+	 * like an old-style 8-bit colormap).
+	 */
+	if (checkcmap(img) == 16)
+	    cvtcmap(img);
+	else
+	    TIFFWarningExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "Assuming 8-bit colormap");
+	/*
+	 * Use mapping table and colormap to construct
+	 * unpacking tables for samples < 8 bits.
+	 */
+	if (img->bitspersample <= 8 && !makecmap(img))
+	    return (0);
+	break;
+    }
+    return (1);
+}
+
+/*
+ * Select the appropriate conversion routine for packed data.
+ */
+static int
+pickTileContigCase(TIFFRGBAImage* img)
+{
+    tileContigRoutine put = 0;
+
+    if (buildMap(img)) {
+	switch (img->photometric) {
+	case PHOTOMETRIC_RGB:
+	    switch (img->bitspersample) {
+	    case 8:
+		if (!img->Map) {
+		    if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+			put = putRGBAAcontig8bittile;
+		    else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+			put = putRGBUAcontig8bittile;
+		    else
+			put = putRGBcontig8bittile;
+		} else
+		    put = putRGBcontig8bitMaptile;
+		break;
+	    case 16:
+		put = putRGBcontig16bittile;
+		if (!img->Map) {
+		    if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+			put = putRGBAAcontig16bittile;
+		    else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+			put = putRGBUAcontig16bittile;
+		}
+		break;
+	    }
+	    break;
+	case PHOTOMETRIC_SEPARATED:
+	    if (img->bitspersample == 8) {
+		if (!img->Map)
+		    put = putRGBcontig8bitCMYKtile;
+		else
+		    put = putRGBcontig8bitCMYKMaptile;
+	    }
+	    break;
+	case PHOTOMETRIC_PALETTE:
+	    switch (img->bitspersample) {
+	    case 8:	put = put8bitcmaptile; break;
+	    case 4: put = put4bitcmaptile; break;
+	    case 2: put = put2bitcmaptile; break;
+	    case 1: put = put1bitcmaptile; break;
+	    }
+	    break;
+	case PHOTOMETRIC_MINISWHITE:
+	case PHOTOMETRIC_MINISBLACK:
+	    switch (img->bitspersample) {
+            case 16: put = put16bitbwtile; break;
+	    case 8:  put = putgreytile; break;
+	    case 4:  put = put4bitbwtile; break;
+	    case 2:  put = put2bitbwtile; break;
+	    case 1:  put = put1bitbwtile; break;
+	    }
+	    break;
+	case PHOTOMETRIC_YCBCR:
+	    if (img->bitspersample == 8)
+		put = initYCbCrConversion(img);
+	    break;
+	case PHOTOMETRIC_CIELAB:
+	    if (img->bitspersample == 8)
+		put = initCIELabConversion(img);
+	    break;
+	}
+    }
+    return ((img->put.contig = put) != 0);
+}
+
+/*
+ * Select the appropriate conversion routine for unpacked data.
+ *
+ * NB: we assume that unpacked single channel data is directed
+ *	 to the "packed routines.
+ */
+static int
+pickTileSeparateCase(TIFFRGBAImage* img)
+{
+    tileSeparateRoutine put = 0;
+
+    if (buildMap(img)) {
+	switch (img->photometric) {
+	case PHOTOMETRIC_RGB:
+	    switch (img->bitspersample) {
+	    case 8:
+		if (!img->Map) {
+		    if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+			put = putRGBAAseparate8bittile;
+		    else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+			put = putRGBUAseparate8bittile;
+		    else
+			put = putRGBseparate8bittile;
+		} else
+		    put = putRGBseparate8bitMaptile;
+		break;
+	    case 16:
+		put = putRGBseparate16bittile;
+		if (!img->Map) {
+		    if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
+			put = putRGBAAseparate16bittile;
+		    else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
+			put = putRGBUAseparate16bittile;
+		}
+		break;
+	    }
+	    break;
+	}
+    }
+    return ((img->put.separate = put) != 0);
+}
+
+/*
+ * Read a whole strip off data from the file, and convert to RGBA form.
+ * If this is the last strip, then it will only contain the portion of
+ * the strip that is actually within the image space.  The result is
+ * organized in bottom to top form.
+ */
+
+
+int
+TIFFReadRGBAStrip(TIFF* tif, uint32 row, uint32 * raster )
+
+{
+    char 	emsg[1024] = "";
+    TIFFRGBAImage img;
+    int 	ok;
+    uint32	rowsperstrip, rows_to_read;
+
+    if( TIFFIsTiled( tif ) )
+    {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+                  "Can't use TIFFReadRGBAStrip() with tiled file.");
+	return (0);
+    }
+    
+    TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
+    if( (row % rowsperstrip) != 0 )
+    {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+				"Row passed to TIFFReadRGBAStrip() must be first in a strip.");
+		return (0);
+    }
+
+    if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, 0, emsg)) {
+
+        img.row_offset = row;
+        img.col_offset = 0;
+
+        if( row + rowsperstrip > img.height )
+            rows_to_read = img.height - row;
+        else
+            rows_to_read = rowsperstrip;
+        
+	ok = TIFFRGBAImageGet(&img, raster, img.width, rows_to_read );
+        
+	TIFFRGBAImageEnd(&img);
+    } else {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), emsg);
+		ok = 0;
+    }
+    
+    return (ok);
+}
+
+/*
+ * Read a whole tile off data from the file, and convert to RGBA form.
+ * The returned RGBA data is organized from bottom to top of tile,
+ * and may include zeroed areas if the tile extends off the image.
+ */
+
+int
+TIFFReadRGBATile(TIFF* tif, uint32 col, uint32 row, uint32 * raster)
+
+{
+    char 	emsg[1024] = "";
+    TIFFRGBAImage img;
+    int 	ok;
+    uint32	tile_xsize, tile_ysize;
+    uint32	read_xsize, read_ysize;
+    uint32	i_row;
+
+    /*
+     * Verify that our request is legal - on a tile file, and on a
+     * tile boundary.
+     */
+    
+    if( !TIFFIsTiled( tif ) )
+    {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+				  "Can't use TIFFReadRGBATile() with stripped file.");
+		return (0);
+    }
+    
+    TIFFGetFieldDefaulted(tif, TIFFTAG_TILEWIDTH, &tile_xsize);
+    TIFFGetFieldDefaulted(tif, TIFFTAG_TILELENGTH, &tile_ysize);
+    if( (col % tile_xsize) != 0 || (row % tile_ysize) != 0 )
+    {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
+                  "Row/col passed to TIFFReadRGBATile() must be top"
+                  "left corner of a tile.");
+	return (0);
+    }
+
+    /*
+     * Setup the RGBA reader.
+     */
+    
+    if (!TIFFRGBAImageOK(tif, emsg) 
+	|| !TIFFRGBAImageBegin(&img, tif, 0, emsg)) {
+	    TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), emsg);
+	    return( 0 );
+    }
+
+    /*
+     * The TIFFRGBAImageGet() function doesn't allow us to get off the
+     * edge of the image, even to fill an otherwise valid tile.  So we
+     * figure out how much we can read, and fix up the tile buffer to
+     * a full tile configuration afterwards.
+     */
+
+    if( row + tile_ysize > img.height )
+        read_ysize = img.height - row;
+    else
+        read_ysize = tile_ysize;
+    
+    if( col + tile_xsize > img.width )
+        read_xsize = img.width - col;
+    else
+        read_xsize = tile_xsize;
+
+    /*
+     * Read the chunk of imagery.
+     */
+    
+    img.row_offset = row;
+    img.col_offset = col;
+
+    ok = TIFFRGBAImageGet(&img, raster, read_xsize, read_ysize );
+        
+    TIFFRGBAImageEnd(&img);
+
+    /*
+     * If our read was incomplete we will need to fix up the tile by
+     * shifting the data around as if a full tile of data is being returned.
+     *
+     * This is all the more complicated because the image is organized in
+     * bottom to top format. 
+     */
+
+    if( read_xsize == tile_xsize && read_ysize == tile_ysize )
+        return( ok );
+
+    for( i_row = 0; i_row < read_ysize; i_row++ ) {
+        memmove( raster + (tile_ysize - i_row - 1) * tile_xsize,
+                 raster + (read_ysize - i_row - 1) * read_xsize,
+                 read_xsize * sizeof(uint32) );
+        _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize+read_xsize,
+                     0, sizeof(uint32) * (tile_xsize - read_xsize) );
+    }
+
+    for( i_row = read_ysize; i_row < tile_ysize; i_row++ ) {
+        _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize,
+                     0, sizeof(uint32) * tile_xsize );
+    }
+
+    return (ok);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_jpeg.c b/src/libtiff/tif_jpeg.c
new file mode 100644
index 0000000..63f943e
--- /dev/null
+++ b/src/libtiff/tif_jpeg.c
@@ -0,0 +1,1946 @@
+/* $Id: tif_jpeg.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1994-1997 Sam Leffler
+ * Copyright (c) 1994-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#define WIN32_LEAN_AND_MEAN
+#define VC_EXTRALEAN
+
+#include "tiffiop.h"
+#ifdef JPEG_SUPPORT
+
+/*
+ * TIFF Library
+ *
+ * JPEG Compression support per TIFF Technical Note #2
+ * (*not* per the original TIFF 6.0 spec).
+ *
+ * This file is simply an interface to the libjpeg library written by
+ * the Independent JPEG Group.  You need release 5 or later of the IJG
+ * code, which you can find on the Internet at ftp.uu.net:/graphics/jpeg/.
+ *
+ * Contributed by Tom Lane <tgl@sss.pgh.pa.us>.
+ */
+#include <setjmp.h>
+
+int TIFFFillStrip(TIFF*, tstrip_t);
+int TIFFFillTile(TIFF*, ttile_t);
+
+/* We undefine FAR to avoid conflict with JPEG definition */
+
+#ifdef FAR
+#undef FAR
+#endif
+
+/*
+  Libjpeg's jmorecfg.h defines INT16 and INT32, but only if XMD_H is
+  not defined.  Unfortunately, the MinGW and Borland compilers include
+  a typedef for INT32, which causes a conflict.  MSVC does not include
+  a conficting typedef given the headers which are included.
+*/
+#if defined(__BORLANDC__) || defined(__MINGW32__)
+# define XMD_H 1
+#endif
+
+/*
+   The windows RPCNDR.H file defines boolean, but defines it with the
+   unsigned char size.  You should compile JPEG library using appropriate
+   definitions in jconfig.h header, but many users compile library in wrong
+   way. That causes errors of the following type:
+
+   "JPEGLib: JPEG parameter struct mismatch: library thinks size is 432,
+   caller expects 464"
+
+   For such users we wil fix the problem here. See install.doc file from
+   the JPEG library distribution for details.
+*/
+
+/* Define "boolean" as unsigned char, not int, per Windows custom. */
+#if 0  /* IMLIB - libjpeg already configured, the following definitions are not necessary */
+#if defined(WIN32) && !defined(__MINGW32__)
+# ifndef __RPCNDR_H__            /* don't conflict if rpcndr.h already read */
+   typedef unsigned char boolean;
+# endif
+# define HAVE_BOOLEAN            /* prevent jmorecfg.h from redefining it */
+#endif
+#endif
+
+#include "jpeglib.h"
+#include "jerror.h"
+
+/*
+ * We are using width_in_blocks which is supposed to be private to
+ * libjpeg. Unfortunately, the libjpeg delivered with Cygwin has
+ * renamed this member to width_in_data_units.  Since the header has
+ * also renamed a define, use that unique define name in order to
+ * detect the problem header and adjust to suit.
+ */
+#if defined(D_MAX_DATA_UNITS_IN_MCU)
+#define width_in_blocks width_in_data_units
+#endif
+
+/*
+ * On some machines it may be worthwhile to use _setjmp or sigsetjmp
+ * in place of plain setjmp.  These macros will make it easier.
+ */
+#define SETJMP(jbuf)		setjmp(jbuf)
+#define LONGJMP(jbuf,code)	longjmp(jbuf,code)
+#define JMP_BUF			jmp_buf
+
+typedef struct jpeg_destination_mgr jpeg_destination_mgr;
+typedef struct jpeg_source_mgr jpeg_source_mgr;
+typedef	struct jpeg_error_mgr jpeg_error_mgr;
+
+/*
+ * State block for each open TIFF file using
+ * libjpeg to do JPEG compression/decompression.
+ *
+ * libjpeg's visible state is either a jpeg_compress_struct
+ * or jpeg_decompress_struct depending on which way we
+ * are going.  comm can be used to refer to the fields
+ * which are common to both.
+ *
+ * NB: cinfo is required to be the first member of JPEGState,
+ *     so we can safely cast JPEGState* -> jpeg_xxx_struct*
+ *     and vice versa!
+ */
+typedef	struct {
+	union {
+		struct jpeg_compress_struct c;
+		struct jpeg_decompress_struct d;
+		struct jpeg_common_struct comm;
+	} cinfo;			/* NB: must be first */
+        int             cinfo_initialized;
+
+	jpeg_error_mgr	err;		/* libjpeg error manager */
+	JMP_BUF		exit_jmpbuf;	/* for catching libjpeg failures */
+	/*
+	 * The following two members could be a union, but
+	 * they're small enough that it's not worth the effort.
+	 */
+	jpeg_destination_mgr dest;	/* data dest for compression */
+	jpeg_source_mgr	src;		/* data source for decompression */
+					/* private state */
+	TIFF*		tif;		/* back link needed by some code */
+	uint16		photometric;	/* copy of PhotometricInterpretation */
+	uint16		h_sampling;	/* luminance sampling factors */
+	uint16		v_sampling;
+	tsize_t		bytesperline;	/* decompressed bytes per scanline */
+	/* pointers to intermediate buffers when processing downsampled data */
+	JSAMPARRAY	ds_buffer[MAX_COMPONENTS];
+	int		scancount;	/* number of "scanlines" accumulated */
+	int		samplesperclump;
+
+	TIFFVGetMethod	vgetparent;	/* super-class method */
+	TIFFVSetMethod	vsetparent;	/* super-class method */
+	TIFFStripMethod	defsparent;	/* super-class method */
+	TIFFTileMethod	deftparent;	/* super-class method */
+					/* pseudo-tag fields */
+	void*		jpegtables;	/* JPEGTables tag value, or NULL */
+	uint32		jpegtables_length; /* number of bytes in same */
+	int		jpegquality;	/* Compression quality level */
+	int		jpegcolormode;	/* Auto RGB<=>YCbCr convert? */
+	int		jpegtablesmode;	/* What to put in JPEGTables */
+
+        int             ycbcrsampling_fetched;
+	uint32		recvparams;	/* encoded Class 2 session params */
+	char*		subaddress;	/* subaddress string */
+	uint32		recvtime;	/* time spent receiving (secs) */
+	char*		faxdcs;		/* encoded fax parameters (DCS, Table 2/T.30) */
+} JPEGState;
+
+#define	JState(tif)	((JPEGState*)(tif)->tif_data)
+
+static	int JPEGDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int JPEGDecodeRaw(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int JPEGEncode(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int JPEGEncodeRaw(TIFF*, tidata_t, tsize_t, tsample_t);
+static  int JPEGInitializeLibJPEG( TIFF * tif,
+								   int force_encode, int force_decode );
+
+#define	FIELD_JPEGTABLES	(FIELD_CODEC+0)
+#define	FIELD_RECVPARAMS	(FIELD_CODEC+1)
+#define	FIELD_SUBADDRESS	(FIELD_CODEC+2)
+#define	FIELD_RECVTIME		(FIELD_CODEC+3)
+#define	FIELD_FAXDCS		(FIELD_CODEC+4)
+
+static const TIFFFieldInfo jpegFieldInfo[] = {
+    { TIFFTAG_JPEGTABLES,	 -3,-3,	TIFF_UNDEFINED,	FIELD_JPEGTABLES,
+      FALSE,	TRUE,	"JPEGTables" },
+    { TIFFTAG_JPEGQUALITY,	 0, 0,	TIFF_ANY,	FIELD_PSEUDO,
+      TRUE,	FALSE,	"" },
+    { TIFFTAG_JPEGCOLORMODE,	 0, 0,	TIFF_ANY,	FIELD_PSEUDO,
+      FALSE,	FALSE,	"" },
+    { TIFFTAG_JPEGTABLESMODE,	 0, 0,	TIFF_ANY,	FIELD_PSEUDO,
+      FALSE,	FALSE,	"" },
+    /* Specific for JPEG in faxes */
+    { TIFFTAG_FAXRECVPARAMS,	 1, 1, TIFF_LONG,	FIELD_RECVPARAMS,
+      TRUE,	FALSE,	"FaxRecvParams" },
+    { TIFFTAG_FAXSUBADDRESS,	-1,-1, TIFF_ASCII,	FIELD_SUBADDRESS,
+      TRUE,	FALSE,	"FaxSubAddress" },
+    { TIFFTAG_FAXRECVTIME,	 1, 1, TIFF_LONG,	FIELD_RECVTIME,
+      TRUE,	FALSE,	"FaxRecvTime" },
+    { TIFFTAG_FAXDCS,		-1, -1, TIFF_ASCII,	FIELD_FAXDCS,
+	  TRUE,	FALSE,	"FaxDcs" },
+};
+#define	N(a)	(sizeof (a) / sizeof (a[0]))
+
+/*
+ * libjpeg interface layer.
+ *
+ * We use setjmp/longjmp to return control to libtiff
+ * when a fatal error is encountered within the JPEG
+ * library.  We also direct libjpeg error and warning
+ * messages through the appropriate libtiff handlers.
+ */
+
+/*
+ * Error handling routines (these replace corresponding
+ * IJG routines from jerror.c).  These are used for both
+ * compression and decompression.
+ */
+static void
+TIFFjpeg_error_exit(j_common_ptr cinfo)
+{
+	JPEGState *sp = (JPEGState *) cinfo;	/* NB: cinfo assumed first */
+	char buffer[JMSG_LENGTH_MAX];
+
+	(*cinfo->err->format_message) (cinfo, buffer);
+	TIFFErrorExt(sp->tif->tif_clientdata, "JPEGLib", buffer);		/* display the error message */
+	jpeg_abort(cinfo);			/* clean up libjpeg state */
+	LONGJMP(sp->exit_jmpbuf, 1);		/* return to libtiff caller */
+}
+
+/*
+ * This routine is invoked only for warning messages,
+ * since error_exit does its own thing and trace_level
+ * is never set > 0.
+ */
+static void
+TIFFjpeg_output_message(j_common_ptr cinfo)
+{
+	char buffer[JMSG_LENGTH_MAX];
+
+	(*cinfo->err->format_message) (cinfo, buffer);
+	TIFFWarningExt(((JPEGState *) cinfo)->tif->tif_clientdata, "JPEGLib", buffer);
+}
+
+/*
+ * Interface routines.  This layer of routines exists
+ * primarily to limit side-effects from using setjmp.
+ * Also, normal/error returns are converted into return
+ * values per libtiff practice.
+ */
+#define	CALLJPEG(sp, fail, op)	(SETJMP((sp)->exit_jmpbuf) ? (fail) : (op))
+#define	CALLVJPEG(sp, op)	CALLJPEG(sp, 0, ((op),1))
+
+static int
+TIFFjpeg_create_compress(JPEGState* sp)
+{
+	/* initialize JPEG error handling */
+	sp->cinfo.c.err = jpeg_std_error(&sp->err);
+	sp->err.error_exit = TIFFjpeg_error_exit;
+	sp->err.output_message = TIFFjpeg_output_message;
+
+	return CALLVJPEG(sp, jpeg_create_compress(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_create_decompress(JPEGState* sp)
+{
+	/* initialize JPEG error handling */
+	sp->cinfo.d.err = jpeg_std_error(&sp->err);
+	sp->err.error_exit = TIFFjpeg_error_exit;
+	sp->err.output_message = TIFFjpeg_output_message;
+
+	return CALLVJPEG(sp, jpeg_create_decompress(&sp->cinfo.d));
+}
+
+static int
+TIFFjpeg_set_defaults(JPEGState* sp)
+{
+	return CALLVJPEG(sp, jpeg_set_defaults(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_set_colorspace(JPEGState* sp, J_COLOR_SPACE colorspace)
+{
+	return CALLVJPEG(sp, jpeg_set_colorspace(&sp->cinfo.c, colorspace));
+}
+
+static int
+TIFFjpeg_set_quality(JPEGState* sp, int quality, boolean force_baseline)
+{
+	return CALLVJPEG(sp,
+	    jpeg_set_quality(&sp->cinfo.c, quality, force_baseline));
+}
+
+static int
+TIFFjpeg_suppress_tables(JPEGState* sp, boolean suppress)
+{
+	return CALLVJPEG(sp, jpeg_suppress_tables(&sp->cinfo.c, suppress));
+}
+
+static int
+TIFFjpeg_start_compress(JPEGState* sp, boolean write_all_tables)
+{
+	return CALLVJPEG(sp,
+	    jpeg_start_compress(&sp->cinfo.c, write_all_tables));
+}
+
+static int
+TIFFjpeg_write_scanlines(JPEGState* sp, JSAMPARRAY scanlines, int num_lines)
+{
+	return CALLJPEG(sp, -1, (int) jpeg_write_scanlines(&sp->cinfo.c,
+	    scanlines, (JDIMENSION) num_lines));
+}
+
+static int
+TIFFjpeg_write_raw_data(JPEGState* sp, JSAMPIMAGE data, int num_lines)
+{
+	return CALLJPEG(sp, -1, (int) jpeg_write_raw_data(&sp->cinfo.c,
+	    data, (JDIMENSION) num_lines));
+}
+
+static int
+TIFFjpeg_finish_compress(JPEGState* sp)
+{
+	return CALLVJPEG(sp, jpeg_finish_compress(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_write_tables(JPEGState* sp)
+{
+	return CALLVJPEG(sp, jpeg_write_tables(&sp->cinfo.c));
+}
+
+static int
+TIFFjpeg_read_header(JPEGState* sp, boolean require_image)
+{
+	return CALLJPEG(sp, -1, jpeg_read_header(&sp->cinfo.d, require_image));
+}
+
+static int
+TIFFjpeg_start_decompress(JPEGState* sp)
+{
+	return CALLVJPEG(sp, jpeg_start_decompress(&sp->cinfo.d));
+}
+
+static int
+TIFFjpeg_read_scanlines(JPEGState* sp, JSAMPARRAY scanlines, int max_lines)
+{
+	return CALLJPEG(sp, -1, (int) jpeg_read_scanlines(&sp->cinfo.d,
+	    scanlines, (JDIMENSION) max_lines));
+}
+
+static int
+TIFFjpeg_read_raw_data(JPEGState* sp, JSAMPIMAGE data, int max_lines)
+{
+	return CALLJPEG(sp, -1, (int) jpeg_read_raw_data(&sp->cinfo.d,
+	    data, (JDIMENSION) max_lines));
+}
+
+static int
+TIFFjpeg_finish_decompress(JPEGState* sp)
+{
+	return CALLJPEG(sp, -1, (int) jpeg_finish_decompress(&sp->cinfo.d));
+}
+
+static int
+TIFFjpeg_abort(JPEGState* sp)
+{
+	return CALLVJPEG(sp, jpeg_abort(&sp->cinfo.comm));
+}
+
+static int
+TIFFjpeg_destroy(JPEGState* sp)
+{
+	return CALLVJPEG(sp, jpeg_destroy(&sp->cinfo.comm));
+}
+
+static JSAMPARRAY
+TIFFjpeg_alloc_sarray(JPEGState* sp, int pool_id,
+		      JDIMENSION samplesperrow, JDIMENSION numrows)
+{
+	return CALLJPEG(sp, (JSAMPARRAY) NULL,
+	    (*sp->cinfo.comm.mem->alloc_sarray)
+		(&sp->cinfo.comm, pool_id, samplesperrow, numrows));
+}
+
+/*
+ * JPEG library destination data manager.
+ * These routines direct compressed data from libjpeg into the
+ * libtiff output buffer.
+ */
+
+static void
+std_init_destination(j_compress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+	TIFF* tif = sp->tif;
+
+	sp->dest.next_output_byte = (JOCTET*) tif->tif_rawdata;
+	sp->dest.free_in_buffer = (size_t) tif->tif_rawdatasize;
+}
+
+static boolean
+std_empty_output_buffer(j_compress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+	TIFF* tif = sp->tif;
+
+	/* the entire buffer has been filled */
+	tif->tif_rawcc = tif->tif_rawdatasize;
+	TIFFFlushData1(tif);
+	sp->dest.next_output_byte = (JOCTET*) tif->tif_rawdata;
+	sp->dest.free_in_buffer = (size_t) tif->tif_rawdatasize;
+
+	return (TRUE);
+}
+
+static void
+std_term_destination(j_compress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+	TIFF* tif = sp->tif;
+
+	tif->tif_rawcp = (tidata_t) sp->dest.next_output_byte;
+	tif->tif_rawcc =
+	    tif->tif_rawdatasize - (tsize_t) sp->dest.free_in_buffer;
+	/* NB: libtiff does the final buffer flush */
+}
+
+static void
+TIFFjpeg_data_dest(JPEGState* sp, TIFF* tif)
+{
+	(void) tif;
+	sp->cinfo.c.dest = &sp->dest;
+	sp->dest.init_destination = std_init_destination;
+	sp->dest.empty_output_buffer = std_empty_output_buffer;
+	sp->dest.term_destination = std_term_destination;
+}
+
+/*
+ * Alternate destination manager for outputting to JPEGTables field.
+ */
+
+static void
+tables_init_destination(j_compress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+
+	/* while building, jpegtables_length is allocated buffer size */
+	sp->dest.next_output_byte = (JOCTET*) sp->jpegtables;
+	sp->dest.free_in_buffer = (size_t) sp->jpegtables_length;
+}
+
+static boolean
+tables_empty_output_buffer(j_compress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+	void* newbuf;
+
+	/* the entire buffer has been filled; enlarge it by 1000 bytes */
+	newbuf = _TIFFrealloc((tdata_t) sp->jpegtables,
+			      (tsize_t) (sp->jpegtables_length + 1000));
+	if (newbuf == NULL)
+		ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 100);
+	sp->dest.next_output_byte = (JOCTET*) newbuf + sp->jpegtables_length;
+	sp->dest.free_in_buffer = (size_t) 1000;
+	sp->jpegtables = newbuf;
+	sp->jpegtables_length += 1000;
+	return (TRUE);
+}
+
+static void
+tables_term_destination(j_compress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+
+	/* set tables length to number of bytes actually emitted */
+	sp->jpegtables_length -= sp->dest.free_in_buffer;
+}
+
+static int
+TIFFjpeg_tables_dest(JPEGState* sp, TIFF* tif)
+{
+	(void) tif;
+	/*
+	 * Allocate a working buffer for building tables.
+	 * Initial size is 1000 bytes, which is usually adequate.
+	 */
+	if (sp->jpegtables)
+		_TIFFfree(sp->jpegtables);
+	sp->jpegtables_length = 1000;
+	sp->jpegtables = (void*) _TIFFmalloc((tsize_t) sp->jpegtables_length);
+	if (sp->jpegtables == NULL) {
+		sp->jpegtables_length = 0;
+		TIFFErrorExt(sp->tif->tif_clientdata, "TIFFjpeg_tables_dest", "No space for JPEGTables");
+		return (0);
+	}
+	sp->cinfo.c.dest = &sp->dest;
+	sp->dest.init_destination = tables_init_destination;
+	sp->dest.empty_output_buffer = tables_empty_output_buffer;
+	sp->dest.term_destination = tables_term_destination;
+	return (1);
+}
+
+/*
+ * JPEG library source data manager.
+ * These routines supply compressed data to libjpeg.
+ */
+
+static void
+std_init_source(j_decompress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+	TIFF* tif = sp->tif;
+
+	sp->src.next_input_byte = (const JOCTET*) tif->tif_rawdata;
+	sp->src.bytes_in_buffer = (size_t) tif->tif_rawcc;
+}
+
+static boolean
+std_fill_input_buffer(j_decompress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState* ) cinfo;
+	static const JOCTET dummy_EOI[2] = { 0xFF, JPEG_EOI };
+
+	/*
+	 * Should never get here since entire strip/tile is
+	 * read into memory before the decompressor is called,
+	 * and thus was supplied by init_source.
+	 */
+	WARNMS(cinfo, JWRN_JPEG_EOF);
+	/* insert a fake EOI marker */
+	sp->src.next_input_byte = dummy_EOI;
+	sp->src.bytes_in_buffer = 2;
+	return (TRUE);
+}
+
+static void
+std_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+
+	if (num_bytes > 0) {
+		if (num_bytes > (long) sp->src.bytes_in_buffer) {
+			/* oops, buffer overrun */
+			(void) std_fill_input_buffer(cinfo);
+		} else {
+			sp->src.next_input_byte += (size_t) num_bytes;
+			sp->src.bytes_in_buffer -= (size_t) num_bytes;
+		}
+	}
+}
+
+static void
+std_term_source(j_decompress_ptr cinfo)
+{
+	/* No work necessary here */
+	/* Or must we update tif->tif_rawcp, tif->tif_rawcc ??? */
+	/* (if so, need empty tables_term_source!) */
+	(void) cinfo;
+}
+
+static void
+TIFFjpeg_data_src(JPEGState* sp, TIFF* tif)
+{
+	(void) tif;
+	sp->cinfo.d.src = &sp->src;
+	sp->src.init_source = std_init_source;
+	sp->src.fill_input_buffer = std_fill_input_buffer;
+	sp->src.skip_input_data = std_skip_input_data;
+	sp->src.resync_to_restart = jpeg_resync_to_restart;
+	sp->src.term_source = std_term_source;
+	sp->src.bytes_in_buffer = 0;		/* for safety */
+	sp->src.next_input_byte = NULL;
+}
+
+/*
+ * Alternate source manager for reading from JPEGTables.
+ * We can share all the code except for the init routine.
+ */
+
+static void
+tables_init_source(j_decompress_ptr cinfo)
+{
+	JPEGState* sp = (JPEGState*) cinfo;
+
+	sp->src.next_input_byte = (const JOCTET*) sp->jpegtables;
+	sp->src.bytes_in_buffer = (size_t) sp->jpegtables_length;
+}
+
+static void
+TIFFjpeg_tables_src(JPEGState* sp, TIFF* tif)
+{
+	TIFFjpeg_data_src(sp, tif);
+	sp->src.init_source = tables_init_source;
+}
+
+/*
+ * Allocate downsampled-data buffers needed for downsampled I/O.
+ * We use values computed in jpeg_start_compress or jpeg_start_decompress.
+ * We use libjpeg's allocator so that buffers will be released automatically
+ * when done with strip/tile.
+ * This is also a handy place to compute samplesperclump, bytesperline.
+ */
+static int
+alloc_downsampled_buffers(TIFF* tif, jpeg_component_info* comp_info,
+			  int num_components)
+{
+	JPEGState* sp = JState(tif);
+	int ci;
+	jpeg_component_info* compptr;
+	JSAMPARRAY buf;
+	int samples_per_clump = 0;
+
+	for (ci = 0, compptr = comp_info; ci < num_components;
+	     ci++, compptr++) {
+		samples_per_clump += compptr->h_samp_factor *
+			compptr->v_samp_factor;
+		buf = TIFFjpeg_alloc_sarray(sp, JPOOL_IMAGE,
+				compptr->width_in_blocks * DCTSIZE,
+				(JDIMENSION) (compptr->v_samp_factor*DCTSIZE));
+		if (buf == NULL)
+			return (0);
+		sp->ds_buffer[ci] = buf;
+	}
+	sp->samplesperclump = samples_per_clump;
+	return (1);
+}
+
+
+/*
+ * JPEG Decoding.
+ */
+
+static int
+JPEGSetupDecode(TIFF* tif)
+{
+	JPEGState* sp = JState(tif);
+	TIFFDirectory *td = &tif->tif_dir;
+
+        JPEGInitializeLibJPEG( tif, 0, 1 );
+
+	assert(sp != NULL);
+	assert(sp->cinfo.comm.is_decompressor);
+
+	/* Read JPEGTables if it is present */
+	if (TIFFFieldSet(tif,FIELD_JPEGTABLES)) {
+		TIFFjpeg_tables_src(sp, tif);
+		if(TIFFjpeg_read_header(sp,FALSE) != JPEG_HEADER_TABLES_ONLY) {
+			TIFFErrorExt(tif->tif_clientdata, "JPEGSetupDecode", "Bogus JPEGTables field");
+			return (0);
+		}
+	}
+
+	/* Grab parameters that are same for all strips/tiles */
+	sp->photometric = td->td_photometric;
+	switch (sp->photometric) {
+	case PHOTOMETRIC_YCBCR:
+		sp->h_sampling = td->td_ycbcrsubsampling[0];
+		sp->v_sampling = td->td_ycbcrsubsampling[1];
+		break;
+	default:
+		/* TIFF 6.0 forbids subsampling of all other color spaces */
+		sp->h_sampling = 1;
+		sp->v_sampling = 1;
+		break;
+	}
+
+	/* Set up for reading normal data */
+	TIFFjpeg_data_src(sp, tif);
+	tif->tif_postdecode = _TIFFNoPostDecode; /* override byte swapping */
+	return (1);
+}
+
+/*
+ * Set up for decoding a strip or tile.
+ */
+static int
+JPEGPreDecode(TIFF* tif, tsample_t s)
+{
+	JPEGState *sp = JState(tif);
+	TIFFDirectory *td = &tif->tif_dir;
+	static const char module[] = "JPEGPreDecode";
+	uint32 segment_width, segment_height;
+	int downsampled_output;
+	int ci;
+
+	assert(sp != NULL);
+	assert(sp->cinfo.comm.is_decompressor);
+	/*
+	 * Reset decoder state from any previous strip/tile,
+	 * in case application didn't read the whole strip.
+	 */
+	if (!TIFFjpeg_abort(sp))
+		return (0);
+	/*
+	 * Read the header for this strip/tile.
+	 */
+	if (TIFFjpeg_read_header(sp, TRUE) != JPEG_HEADER_OK)
+		return (0);
+	/*
+	 * Check image parameters and set decompression parameters.
+	 */
+	segment_width = td->td_imagewidth;
+	segment_height = td->td_imagelength - tif->tif_row;
+	if (isTiled(tif)) {
+                segment_width = td->td_tilewidth;
+                segment_height = td->td_tilelength;
+		sp->bytesperline = TIFFTileRowSize(tif);
+	} else {
+		if (segment_height > td->td_rowsperstrip)
+			segment_height = td->td_rowsperstrip;
+		sp->bytesperline = TIFFScanlineSize(tif);
+	}
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE && s > 0) {
+		/*
+		 * For PC 2, scale down the expected strip/tile size
+		 * to match a downsampled component
+		 */
+		segment_width = TIFFhowmany(segment_width, sp->h_sampling);
+		segment_height = TIFFhowmany(segment_height, sp->v_sampling);
+	}
+	if (sp->cinfo.d.image_width != segment_width ||
+	    sp->cinfo.d.image_height != segment_height) {
+		TIFFWarningExt(tif->tif_clientdata, module,
+                 "Improper JPEG strip/tile size, expected %dx%d, got %dx%d",
+                          segment_width, 
+                          segment_height,
+                          sp->cinfo.d.image_width, 
+                          sp->cinfo.d.image_height);
+	}
+	if (sp->cinfo.d.num_components !=
+	    (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+	     td->td_samplesperpixel : 1)) {
+		TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG component count");
+		return (0);
+	}
+#ifdef JPEG_LIB_MK1
+	if (12 != td->td_bitspersample && 8 != td->td_bitspersample) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG data precision");
+            return (0);
+	}
+        sp->cinfo.d.data_precision = td->td_bitspersample;
+        sp->cinfo.d.bits_in_jsample = td->td_bitspersample;
+#else
+	if (sp->cinfo.d.data_precision != td->td_bitspersample) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG data precision");
+            return (0);
+	}
+#endif
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+		/* Component 0 should have expected sampling factors */
+		if (sp->cinfo.d.comp_info[0].h_samp_factor != sp->h_sampling ||
+		    sp->cinfo.d.comp_info[0].v_samp_factor != sp->v_sampling) {
+				TIFFWarningExt(tif->tif_clientdata, module,
+                                    "Improper JPEG sampling factors %d,%d\n"
+                                    "Apparently should be %d,%d.",
+                                    sp->cinfo.d.comp_info[0].h_samp_factor,
+                                    sp->cinfo.d.comp_info[0].v_samp_factor,
+                                    sp->h_sampling, sp->v_sampling);
+
+			    /*
+			     * XXX: Files written by the Intergraph software
+			     * has different sampling factors stored in the
+			     * TIFF tags and in the JPEG structures. We will
+			     * try to deduce Intergraph files by the presense
+			     * of the tag 33918.
+			     */
+			    if (!_TIFFFindFieldInfo(tif, 33918, TIFF_ANY)) {
+					TIFFWarningExt(tif->tif_clientdata, module,
+					"Decompressor will try reading with "
+					"sampling %d,%d.",
+					sp->cinfo.d.comp_info[0].h_samp_factor,
+					sp->cinfo.d.comp_info[0].v_samp_factor);
+
+				    sp->h_sampling = (uint16)
+					sp->cinfo.d.comp_info[0].h_samp_factor;
+				    sp->v_sampling = (uint16)
+					sp->cinfo.d.comp_info[0].v_samp_factor;
+			    }
+		}
+		/* Rest should have sampling factors 1,1 */
+		for (ci = 1; ci < sp->cinfo.d.num_components; ci++) {
+			if (sp->cinfo.d.comp_info[ci].h_samp_factor != 1 ||
+			    sp->cinfo.d.comp_info[ci].v_samp_factor != 1) {
+				TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG sampling factors");
+				return (0);
+			}
+		}
+	} else {
+		/* PC 2's single component should have sampling factors 1,1 */
+		if (sp->cinfo.d.comp_info[0].h_samp_factor != 1 ||
+		    sp->cinfo.d.comp_info[0].v_samp_factor != 1) {
+			TIFFErrorExt(tif->tif_clientdata, module, "Improper JPEG sampling factors");
+			return (0);
+		}
+	}
+	downsampled_output = FALSE;
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
+	    sp->photometric == PHOTOMETRIC_YCBCR &&
+	    sp->jpegcolormode == JPEGCOLORMODE_RGB) {
+	/* Convert YCbCr to RGB */
+		sp->cinfo.d.jpeg_color_space = JCS_YCbCr;
+		sp->cinfo.d.out_color_space = JCS_RGB;
+	} else {
+			/* Suppress colorspace handling */
+		sp->cinfo.d.jpeg_color_space = JCS_UNKNOWN;
+		sp->cinfo.d.out_color_space = JCS_UNKNOWN;
+ 		tif->tif_flags |= TIFF_UPSAMPLED;  /* IMLIB - allow upsampling when there is no  colorspace handling
+		if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
+		    (sp->h_sampling != 1 || sp->v_sampling != 1))
+			downsampled_output = TRUE;  */
+		/* XXX what about up-sampling? */
+	}
+	if (downsampled_output) {
+		/* Need to use raw-data interface to libjpeg */
+		sp->cinfo.d.raw_data_out = TRUE;
+		tif->tif_decoderow = JPEGDecodeRaw;
+		tif->tif_decodestrip = JPEGDecodeRaw;
+		tif->tif_decodetile = JPEGDecodeRaw;
+	} else {
+		/* Use normal interface to libjpeg */
+		sp->cinfo.d.raw_data_out = FALSE;
+		tif->tif_decoderow = JPEGDecode;
+		tif->tif_decodestrip = JPEGDecode;
+		tif->tif_decodetile = JPEGDecode;
+	}
+	/* Start JPEG decompressor */
+	if (!TIFFjpeg_start_decompress(sp))
+		return (0);
+	/* Allocate downsampled-data buffers if needed */
+	if (downsampled_output) {
+		if (!alloc_downsampled_buffers(tif, sp->cinfo.d.comp_info,
+					       sp->cinfo.d.num_components))
+			return (0);
+		sp->scancount = DCTSIZE;	/* mark buffer empty */
+	}
+	return (1);
+}
+
+/*
+ * Decode a chunk of pixels.
+ * "Standard" case: returned data is not downsampled.
+ */
+/*ARGSUSED*/ static int
+JPEGDecode(TIFF* tif, tidata_t buf, tsize_t cc, tsample_t s)
+{
+    JPEGState *sp = JState(tif);
+    tsize_t nrows;
+    (void) s;
+
+    nrows = cc / sp->bytesperline;
+    if (cc % sp->bytesperline)
+		TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "fractional scanline not read");
+
+    if( nrows > (int) sp->cinfo.d.image_height )
+        nrows = sp->cinfo.d.image_height;
+
+    /* data is expected to be read in multiples of a scanline */
+    if (nrows)
+    {
+        JSAMPROW line_work_buf = NULL;
+
+        /*
+        ** For 6B, only use temporary buffer for 12 bit imagery. 
+        ** For Mk1 always use it. 
+        */
+#if !defined(JPEG_LIB_MK1)        
+        if( sp->cinfo.d.data_precision == 12 )
+#endif
+        {
+            line_work_buf = (JSAMPROW) 
+                _TIFFmalloc(sizeof(short) * sp->cinfo.d.output_width 
+                            * sp->cinfo.d.num_components );
+        }
+
+        do {
+            if( line_work_buf != NULL )
+            {
+                /* 
+                ** In the MK1 case, we aways read into a 16bit buffer, and then
+                ** pack down to 12bit or 8bit.  In 6B case we only read into 16
+                ** bit buffer for 12bit data, which we need to repack. 
+                */
+                if (TIFFjpeg_read_scanlines(sp, &line_work_buf, 1) != 1)
+                    return (0);
+
+                if( sp->cinfo.d.data_precision == 12 )
+                {
+                    int value_pairs = (sp->cinfo.d.output_width 
+                                       * sp->cinfo.d.num_components) / 2;
+                    int iPair;
+
+                    for( iPair = 0; iPair < value_pairs; iPair++ )
+                    {
+                        unsigned char *out_ptr = 
+                            ((unsigned char *) buf) + iPair * 3;
+                        JSAMPLE *in_ptr = line_work_buf + iPair * 2;
+
+                        out_ptr[0] = (in_ptr[0] & 0xff0) >> 4;
+                        out_ptr[1] = ((in_ptr[0] & 0xf) << 4)
+                            | ((in_ptr[1] & 0xf00) >> 8);
+                        out_ptr[2] = ((in_ptr[1] & 0xff) >> 0);
+                    }
+                }
+                else if( sp->cinfo.d.data_precision == 8 )
+                {
+                    int value_count = (sp->cinfo.d.output_width 
+                                       * sp->cinfo.d.num_components);
+                    int iValue;
+
+                    for( iValue = 0; iValue < value_count; iValue++ )
+                    {
+                        ((unsigned char *) buf)[iValue] = 
+                            line_work_buf[iValue] & 0xff;
+                    }
+                }
+            }
+            else
+            {
+                /*
+                ** In the libjpeg6b 8bit case.  We read directly into the 
+                ** TIFF buffer.
+                */
+                JSAMPROW bufptr = (JSAMPROW)buf;
+  
+                if (TIFFjpeg_read_scanlines(sp, &bufptr, 1) != 1)
+                    return (0);
+            }
+
+            ++tif->tif_row;
+            buf += sp->bytesperline;
+            cc -= sp->bytesperline;
+        } while (--nrows > 0);
+
+        if( line_work_buf != NULL )
+            _TIFFfree( line_work_buf );
+    }
+
+    /* Close down the decompressor if we've finished the strip or tile. */
+    return sp->cinfo.d.output_scanline < sp->cinfo.d.output_height
+        || TIFFjpeg_finish_decompress(sp);
+}
+
+/*
+ * Decode a chunk of pixels.
+ * Returned data is downsampled per sampling factors.
+ */
+/*ARGSUSED*/ static int
+JPEGDecodeRaw(TIFF* tif, tidata_t buf, tsize_t cc, tsample_t s)
+{
+    JPEGState *sp = JState(tif);
+    tsize_t nrows;
+    (void) s;
+
+    /* data is expected to be read in multiples of a scanline */
+    if ( (nrows = sp->cinfo.d.image_height) ) {
+        /* Cb,Cr both have sampling factors 1, so this is correct */
+        JDIMENSION clumps_per_line = sp->cinfo.d.comp_info[1].downsampled_width;
+        int samples_per_clump = sp->samplesperclump;
+	
+#ifdef JPEG_LIB_MK1
+        unsigned short* tmpbuf = _TIFFmalloc(sizeof(unsigned short) *
+                                             sp->cinfo.d.output_width *
+                                             sp->cinfo.d.num_components);
+#endif
+ 
+        do {
+            jpeg_component_info *compptr;
+            int ci, clumpoffset;
+
+            /* Reload downsampled-data buffer if needed */
+            if (sp->scancount >= DCTSIZE) {
+                int n = sp->cinfo.d.max_v_samp_factor * DCTSIZE;
+                if (TIFFjpeg_read_raw_data(sp, sp->ds_buffer, n)
+                    != n)
+                    return (0);
+                sp->scancount = 0;
+            }
+            /*
+             * Fastest way to unseparate data is to make one pass
+             * over the scanline for each row of each component.
+             */
+            clumpoffset = 0;	/* first sample in clump */
+            for (ci = 0, compptr = sp->cinfo.d.comp_info;
+                 ci < sp->cinfo.d.num_components;
+                 ci++, compptr++) {
+                int hsamp = compptr->h_samp_factor;
+                int vsamp = compptr->v_samp_factor;
+                int ypos;
+
+                for (ypos = 0; ypos < vsamp; ypos++) {
+                    JSAMPLE *inptr = sp->ds_buffer[ci][sp->scancount*vsamp + ypos];
+#ifdef JPEG_LIB_MK1
+                    JSAMPLE *outptr = (JSAMPLE*)tmpbuf + clumpoffset;
+#else
+                    JSAMPLE *outptr = (JSAMPLE*)buf + clumpoffset;
+#endif
+                    JDIMENSION nclump;
+
+                    if (hsamp == 1) {
+                        /* fast path for at least Cb and Cr */
+                        for (nclump = clumps_per_line; nclump-- > 0; ) {
+                            outptr[0] = *inptr++;
+                            outptr += samples_per_clump;
+                        }
+                    } else {
+                        int xpos;
+
+                        /* general case */
+                        for (nclump = clumps_per_line; nclump-- > 0; ) {
+                            for (xpos = 0; xpos < hsamp; xpos++)
+                                outptr[xpos] = *inptr++;
+                            outptr += samples_per_clump;
+                        }
+                    }
+                    clumpoffset += hsamp;
+                }
+            }
+
+#ifdef JPEG_LIB_MK1
+            {
+                if (sp->cinfo.d.data_precision == 8)
+                {
+                    int i=0;
+                    int len = sp->cinfo.d.output_width * sp->cinfo.d.num_components;
+                    for (i=0; i<len; i++)
+                    {
+                        ((unsigned char*)buf)[i] = tmpbuf[i] & 0xff;
+                    }
+                }
+                else
+                {         // 12-bit
+                    int value_pairs = (sp->cinfo.d.output_width
+                                       * sp->cinfo.d.num_components) / 2;
+                    int iPair;
+                    for( iPair = 0; iPair < value_pairs; iPair++ )
+                    {
+                        unsigned char *out_ptr = ((unsigned char *) buf) + iPair * 3;
+                        JSAMPLE *in_ptr = tmpbuf + iPair * 2;
+                        out_ptr[0] = (in_ptr[0] & 0xff0) >> 4;
+                        out_ptr[1] = ((in_ptr[0] & 0xf) << 4)
+                            | ((in_ptr[1] & 0xf00) >> 8);
+                        out_ptr[2] = ((in_ptr[1] & 0xff) >> 0);
+                    }
+                }
+            }
+#endif
+
+            ++sp->scancount;
+            ++tif->tif_row;
+            buf += sp->bytesperline;
+            cc -= sp->bytesperline;
+        } while (--nrows > 0);
+  
+#ifdef JPEG_LIB_MK1
+        _TIFFfree(tmpbuf);
+#endif
+
+    }
+
+    /* Close down the decompressor if done. */
+    return sp->cinfo.d.output_scanline < sp->cinfo.d.output_height
+        || TIFFjpeg_finish_decompress(sp);
+}
+
+
+/*
+ * JPEG Encoding.
+ */
+
+static void
+unsuppress_quant_table (JPEGState* sp, int tblno)
+{
+	JQUANT_TBL* qtbl;
+
+	if ((qtbl = sp->cinfo.c.quant_tbl_ptrs[tblno]) != NULL)
+		qtbl->sent_table = FALSE;
+}
+
+static void
+unsuppress_huff_table (JPEGState* sp, int tblno)
+{
+	JHUFF_TBL* htbl;
+
+	if ((htbl = sp->cinfo.c.dc_huff_tbl_ptrs[tblno]) != NULL)
+		htbl->sent_table = FALSE;
+	if ((htbl = sp->cinfo.c.ac_huff_tbl_ptrs[tblno]) != NULL)
+		htbl->sent_table = FALSE;
+}
+
+static int
+prepare_JPEGTables(TIFF* tif)
+{
+	JPEGState* sp = JState(tif);
+
+        JPEGInitializeLibJPEG( tif, 0, 0 );
+
+	/* Initialize quant tables for current quality setting */
+	if (!TIFFjpeg_set_quality(sp, sp->jpegquality, FALSE))
+		return (0);
+	/* Mark only the tables we want for output */
+	/* NB: chrominance tables are currently used only with YCbCr */
+	if (!TIFFjpeg_suppress_tables(sp, TRUE))
+		return (0);
+	if (sp->jpegtablesmode & JPEGTABLESMODE_QUANT) {
+		unsuppress_quant_table(sp, 0);
+		if (sp->photometric == PHOTOMETRIC_YCBCR)
+			unsuppress_quant_table(sp, 1);
+	}
+	if (sp->jpegtablesmode & JPEGTABLESMODE_HUFF) {
+		unsuppress_huff_table(sp, 0);
+		if (sp->photometric == PHOTOMETRIC_YCBCR)
+			unsuppress_huff_table(sp, 1);
+	}
+	/* Direct libjpeg output into jpegtables */
+	if (!TIFFjpeg_tables_dest(sp, tif))
+		return (0);
+	/* Emit tables-only datastream */
+	if (!TIFFjpeg_write_tables(sp))
+		return (0);
+
+	return (1);
+}
+
+static int
+JPEGSetupEncode(TIFF* tif)
+{
+	JPEGState* sp = JState(tif);
+	TIFFDirectory *td = &tif->tif_dir;
+	static const char module[] = "JPEGSetupEncode";
+
+        JPEGInitializeLibJPEG( tif, 1, 0 );
+
+	assert(sp != NULL);
+	assert(!sp->cinfo.comm.is_decompressor);
+
+	/*
+	 * Initialize all JPEG parameters to default values.
+	 * Note that jpeg_set_defaults needs legal values for
+	 * in_color_space and input_components.
+	 */
+	sp->cinfo.c.in_color_space = JCS_UNKNOWN;
+	sp->cinfo.c.input_components = 1;
+	if (!TIFFjpeg_set_defaults(sp))
+		return (0);
+	/* Set per-file parameters */
+	sp->photometric = td->td_photometric;
+	switch (sp->photometric) {
+	case PHOTOMETRIC_YCBCR:
+		sp->h_sampling = td->td_ycbcrsubsampling[0];
+		sp->v_sampling = td->td_ycbcrsubsampling[1];
+		/*
+		 * A ReferenceBlackWhite field *must* be present since the
+		 * default value is inappropriate for YCbCr.  Fill in the
+		 * proper value if application didn't set it.
+		 */
+		{
+			float *ref;
+			if (!TIFFGetField(tif, TIFFTAG_REFERENCEBLACKWHITE,
+					  &ref)) {
+				float refbw[6];
+				long top = 1L << td->td_bitspersample;
+				refbw[0] = 0;
+				refbw[1] = (float)(top-1L);
+				refbw[2] = (float)(top>>1);
+				refbw[3] = refbw[1];
+				refbw[4] = refbw[2];
+				refbw[5] = refbw[1];
+				TIFFSetField(tif, TIFFTAG_REFERENCEBLACKWHITE,
+					     refbw);
+			}
+		}
+		break;
+	case PHOTOMETRIC_PALETTE:		/* disallowed by Tech Note */
+	case PHOTOMETRIC_MASK:
+		TIFFErrorExt(tif->tif_clientdata, module,
+			  "PhotometricInterpretation %d not allowed for JPEG",
+			  (int) sp->photometric);
+		return (0);
+	default:
+		/* TIFF 6.0 forbids subsampling of all other color spaces */
+		sp->h_sampling = 1;
+		sp->v_sampling = 1;
+		break;
+	}
+
+	/* Verify miscellaneous parameters */
+
+	/*
+	 * This would need work if libtiff ever supports different
+	 * depths for different components, or if libjpeg ever supports
+	 * run-time selection of depth.  Neither is imminent.
+	 */
+#ifdef JPEG_LIB_MK1
+        /* BITS_IN_JSAMPLE now permits 8 and 12 --- dgilbert */
+	if (td->td_bitspersample != 8 && td->td_bitspersample != 12) 
+#else
+	if (td->td_bitspersample != BITS_IN_JSAMPLE ) 
+#endif
+        {
+		TIFFErrorExt(tif->tif_clientdata, module, "BitsPerSample %d not allowed for JPEG",
+			  (int) td->td_bitspersample);
+		return (0);
+	}
+	sp->cinfo.c.data_precision = td->td_bitspersample;
+#ifdef JPEG_LIB_MK1
+        sp->cinfo.c.bits_in_jsample = td->td_bitspersample;
+#endif
+	if (isTiled(tif)) {
+		if ((td->td_tilelength % (sp->v_sampling * DCTSIZE)) != 0) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+				  "JPEG tile height must be multiple of %d",
+				  sp->v_sampling * DCTSIZE);
+			return (0);
+		}
+		if ((td->td_tilewidth % (sp->h_sampling * DCTSIZE)) != 0) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+				  "JPEG tile width must be multiple of %d",
+				  sp->h_sampling * DCTSIZE);
+			return (0);
+		}
+	} else {
+		if (td->td_rowsperstrip < td->td_imagelength &&
+		    (td->td_rowsperstrip % (sp->v_sampling * DCTSIZE)) != 0) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+				  "RowsPerStrip must be multiple of %d for JPEG",
+				  sp->v_sampling * DCTSIZE);
+			return (0);
+		}
+	}
+
+	/* Create a JPEGTables field if appropriate */
+	if (sp->jpegtablesmode & (JPEGTABLESMODE_QUANT|JPEGTABLESMODE_HUFF)) {
+		if (!prepare_JPEGTables(tif))
+			return (0);
+		/* Mark the field present */
+		/* Can't use TIFFSetField since BEENWRITING is already set! */
+		TIFFSetFieldBit(tif, FIELD_JPEGTABLES);
+		tif->tif_flags |= TIFF_DIRTYDIRECT;
+	} else {
+		/* We do not support application-supplied JPEGTables, */
+		/* so mark the field not present */
+		TIFFClrFieldBit(tif, FIELD_JPEGTABLES);
+	}
+
+	/* Direct libjpeg output to libtiff's output buffer */
+	TIFFjpeg_data_dest(sp, tif);
+
+	return (1);
+}
+
+/*
+ * Set encoding state at the start of a strip or tile.
+ */
+static int
+JPEGPreEncode(TIFF* tif, tsample_t s)
+{
+	JPEGState *sp = JState(tif);
+	TIFFDirectory *td = &tif->tif_dir;
+	static const char module[] = "JPEGPreEncode";
+	uint32 segment_width, segment_height;
+	int downsampled_input;
+
+	assert(sp != NULL);
+	assert(!sp->cinfo.comm.is_decompressor);
+	/*
+	 * Set encoding parameters for this strip/tile.
+	 */
+	if (isTiled(tif)) {
+		segment_width = td->td_tilewidth;
+		segment_height = td->td_tilelength;
+		sp->bytesperline = TIFFTileRowSize(tif);
+	} else {
+		segment_width = td->td_imagewidth;
+		segment_height = td->td_imagelength - tif->tif_row;
+		if (segment_height > td->td_rowsperstrip)
+			segment_height = td->td_rowsperstrip;
+		sp->bytesperline = TIFFScanlineSize(tif);
+	}
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE && s > 0) {
+		/* for PC 2, scale down the strip/tile size
+		 * to match a downsampled component
+		 */
+		segment_width = TIFFhowmany(segment_width, sp->h_sampling);
+		segment_height = TIFFhowmany(segment_height, sp->v_sampling);
+	}
+	if (segment_width > 65535 || segment_height > 65535) {
+		TIFFErrorExt(tif->tif_clientdata, module, "Strip/tile too large for JPEG");
+		return (0);
+	}
+	sp->cinfo.c.image_width = segment_width;
+	sp->cinfo.c.image_height = segment_height;
+	downsampled_input = FALSE;
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+		sp->cinfo.c.input_components = td->td_samplesperpixel;
+		if (sp->photometric == PHOTOMETRIC_YCBCR) {
+			if (sp->jpegcolormode == JPEGCOLORMODE_RGB) {
+				sp->cinfo.c.in_color_space = JCS_RGB;
+			} else {
+				sp->cinfo.c.in_color_space = JCS_YCbCr;
+				tif->tif_flags |= TIFF_UPSAMPLED; /* IMLIB - allow upsampling in the input data
+				if (sp->h_sampling != 1 || sp->v_sampling != 1)
+					downsampled_input = TRUE;  */
+			}
+			if (!TIFFjpeg_set_colorspace(sp, JCS_YCbCr))
+				return (0);
+			/*
+			 * Set Y sampling factors;
+			 * we assume jpeg_set_colorspace() set the rest to 1
+			 */
+			sp->cinfo.c.comp_info[0].h_samp_factor = sp->h_sampling;
+			sp->cinfo.c.comp_info[0].v_samp_factor = sp->v_sampling;
+		} else {
+			sp->cinfo.c.in_color_space = JCS_UNKNOWN;
+			if (!TIFFjpeg_set_colorspace(sp, JCS_UNKNOWN))
+				return (0);
+			/* jpeg_set_colorspace set all sampling factors to 1 */
+		}
+	} else {
+		sp->cinfo.c.input_components = 1;
+		sp->cinfo.c.in_color_space = JCS_UNKNOWN;
+		if (!TIFFjpeg_set_colorspace(sp, JCS_UNKNOWN))
+			return (0);
+		sp->cinfo.c.comp_info[0].component_id = s;
+		/* jpeg_set_colorspace() set sampling factors to 1 */
+		if (sp->photometric == PHOTOMETRIC_YCBCR && s > 0) {
+			sp->cinfo.c.comp_info[0].quant_tbl_no = 1;
+			sp->cinfo.c.comp_info[0].dc_tbl_no = 1;
+			sp->cinfo.c.comp_info[0].ac_tbl_no = 1;
+		}
+	}
+	/* ensure libjpeg won't write any extraneous markers */
+	sp->cinfo.c.write_JFIF_header = FALSE;
+	sp->cinfo.c.write_Adobe_marker = FALSE;
+	/* set up table handling correctly */
+	if (! (sp->jpegtablesmode & JPEGTABLESMODE_QUANT)) {
+		if (!TIFFjpeg_set_quality(sp, sp->jpegquality, FALSE))
+			return (0);
+		unsuppress_quant_table(sp, 0);
+		unsuppress_quant_table(sp, 1);
+	}
+	if (sp->jpegtablesmode & JPEGTABLESMODE_HUFF)
+		sp->cinfo.c.optimize_coding = FALSE;
+	else
+		sp->cinfo.c.optimize_coding = TRUE;
+	if (downsampled_input) {
+		/* Need to use raw-data interface to libjpeg */
+		sp->cinfo.c.raw_data_in = TRUE;
+		tif->tif_encoderow = JPEGEncodeRaw;
+		tif->tif_encodestrip = JPEGEncodeRaw;
+		tif->tif_encodetile = JPEGEncodeRaw;
+	} else {
+		/* Use normal interface to libjpeg */
+		sp->cinfo.c.raw_data_in = FALSE;
+		tif->tif_encoderow = JPEGEncode;
+		tif->tif_encodestrip = JPEGEncode;
+		tif->tif_encodetile = JPEGEncode;
+	}
+	/* Start JPEG compressor */
+	if (!TIFFjpeg_start_compress(sp, FALSE))
+		return (0);
+	/* Allocate downsampled-data buffers if needed */
+	if (downsampled_input) {
+		if (!alloc_downsampled_buffers(tif, sp->cinfo.c.comp_info,
+					       sp->cinfo.c.num_components))
+			return (0);
+	}
+	sp->scancount = 0;
+
+	return (1);
+}
+
+/*
+ * Encode a chunk of pixels.
+ * "Standard" case: incoming data is not downsampled.
+ */
+static int
+JPEGEncode(TIFF* tif, tidata_t buf, tsize_t cc, tsample_t s)
+{
+	JPEGState *sp = JState(tif);
+	tsize_t nrows;
+	JSAMPROW bufptr[1];
+
+	(void) s;
+	assert(sp != NULL);
+	/* data is expected to be supplied in multiples of a scanline */
+	nrows = cc / sp->bytesperline;
+	if (cc % sp->bytesperline)
+		TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "fractional scanline discarded");
+
+	while (nrows-- > 0) {
+		bufptr[0] = (JSAMPROW) buf;
+		if (TIFFjpeg_write_scanlines(sp, bufptr, 1) != 1)
+			return (0);
+		if (nrows > 0)
+			tif->tif_row++;
+		buf += sp->bytesperline;
+	}
+	return (1);
+}
+
+/*
+ * Encode a chunk of pixels.
+ * Incoming data is expected to be downsampled per sampling factors.
+ */
+static int
+JPEGEncodeRaw(TIFF* tif, tidata_t buf, tsize_t cc, tsample_t s)
+{
+	JPEGState *sp = JState(tif);
+	JSAMPLE* inptr;
+	JSAMPLE* outptr;
+	tsize_t nrows;
+	JDIMENSION clumps_per_line, nclump;
+	int clumpoffset, ci, xpos, ypos;
+	jpeg_component_info* compptr;
+	int samples_per_clump = sp->samplesperclump;
+
+	(void) s;
+	assert(sp != NULL);
+	/* data is expected to be supplied in multiples of a scanline */
+	nrows = cc / sp->bytesperline;
+	if (cc % sp->bytesperline)
+		TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "fractional scanline discarded");
+
+	/* Cb,Cr both have sampling factors 1, so this is correct */
+	clumps_per_line = sp->cinfo.c.comp_info[1].downsampled_width;
+
+	while (nrows-- > 0) {
+		/*
+		 * Fastest way to separate the data is to make one pass
+		 * over the scanline for each row of each component.
+		 */
+		clumpoffset = 0;		/* first sample in clump */
+		for (ci = 0, compptr = sp->cinfo.c.comp_info;
+		     ci < sp->cinfo.c.num_components;
+		     ci++, compptr++) {
+		    int hsamp = compptr->h_samp_factor;
+		    int vsamp = compptr->v_samp_factor;
+		    int padding = (int) (compptr->width_in_blocks * DCTSIZE -
+					 clumps_per_line * hsamp);
+		    for (ypos = 0; ypos < vsamp; ypos++) {
+			inptr = ((JSAMPLE*) buf) + clumpoffset;
+			outptr = sp->ds_buffer[ci][sp->scancount*vsamp + ypos];
+			if (hsamp == 1) {
+			    /* fast path for at least Cb and Cr */
+			    for (nclump = clumps_per_line; nclump-- > 0; ) {
+				*outptr++ = inptr[0];
+				inptr += samples_per_clump;
+			    }
+			} else {
+			    /* general case */
+			    for (nclump = clumps_per_line; nclump-- > 0; ) {
+				for (xpos = 0; xpos < hsamp; xpos++)
+				    *outptr++ = inptr[xpos];
+				inptr += samples_per_clump;
+			    }
+			}
+			/* pad each scanline as needed */
+			for (xpos = 0; xpos < padding; xpos++) {
+			    *outptr = outptr[-1];
+			    outptr++;
+			}
+			clumpoffset += hsamp;
+		    }
+		}
+		sp->scancount++;
+		if (sp->scancount >= DCTSIZE) {
+			int n = sp->cinfo.c.max_v_samp_factor * DCTSIZE;
+			if (TIFFjpeg_write_raw_data(sp, sp->ds_buffer, n) != n)
+				return (0);
+			sp->scancount = 0;
+		}
+		if (nrows > 0)
+			tif->tif_row++;
+		buf += sp->bytesperline;
+	}
+	return (1);
+}
+
+/*
+ * Finish up at the end of a strip or tile.
+ */
+static int
+JPEGPostEncode(TIFF* tif)
+{
+	JPEGState *sp = JState(tif);
+
+	if (sp->scancount > 0) {
+		/*
+		 * Need to emit a partial bufferload of downsampled data.
+		 * Pad the data vertically.
+		 */
+		int ci, ypos, n;
+		jpeg_component_info* compptr;
+
+		for (ci = 0, compptr = sp->cinfo.c.comp_info;
+		     ci < sp->cinfo.c.num_components;
+		     ci++, compptr++) {
+			int vsamp = compptr->v_samp_factor;
+			tsize_t row_width = compptr->width_in_blocks * DCTSIZE
+				* sizeof(JSAMPLE);
+			for (ypos = sp->scancount * vsamp;
+			     ypos < DCTSIZE * vsamp; ypos++) {
+				_TIFFmemcpy((tdata_t)sp->ds_buffer[ci][ypos],
+					    (tdata_t)sp->ds_buffer[ci][ypos-1],
+					    row_width);
+
+			}
+		}
+		n = sp->cinfo.c.max_v_samp_factor * DCTSIZE;
+		if (TIFFjpeg_write_raw_data(sp, sp->ds_buffer, n) != n)
+			return (0);
+	}
+
+	return (TIFFjpeg_finish_compress(JState(tif)));
+}
+
+static void
+JPEGCleanup(TIFF* tif)
+{
+	JPEGState *sp = JState(tif);
+	
+	assert(sp != 0);
+
+	tif->tif_tagmethods.vgetfield = sp->vgetparent;
+	tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+	if( sp->cinfo_initialized )
+	    TIFFjpeg_destroy(sp);	/* release libjpeg resources */
+	if (sp->jpegtables)		/* tag value */
+		_TIFFfree(sp->jpegtables);
+	_TIFFfree(tif->tif_data);	/* release local state */
+	tif->tif_data = NULL;
+
+	_TIFFSetDefaultCompressionState(tif);
+}
+
+static int
+JPEGVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	JPEGState* sp = JState(tif);
+	TIFFDirectory* td = &tif->tif_dir;
+	uint32 v32;
+
+	assert(sp != NULL);
+
+	switch (tag) {
+	case TIFFTAG_JPEGTABLES:
+		v32 = va_arg(ap, uint32);
+		if (v32 == 0) {
+			/* XXX */
+			return (0);
+		}
+		_TIFFsetByteArray(&sp->jpegtables, va_arg(ap, void*),
+		    (long) v32);
+		sp->jpegtables_length = v32;
+		TIFFSetFieldBit(tif, FIELD_JPEGTABLES);
+		break;
+	case TIFFTAG_JPEGQUALITY:
+		sp->jpegquality = va_arg(ap, int);
+		return (1);			/* pseudo tag */
+	case TIFFTAG_JPEGCOLORMODE:
+		sp->jpegcolormode = va_arg(ap, int);
+		/*
+		 * Mark whether returned data is up-sampled or not
+		 * so TIFFStripSize and TIFFTileSize return values
+		 * that reflect the true amount of data.
+		 */
+		tif->tif_flags &= ~TIFF_UPSAMPLED;
+		if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+		    if (td->td_photometric == PHOTOMETRIC_YCBCR &&
+		      sp->jpegcolormode == JPEGCOLORMODE_RGB) {
+			tif->tif_flags |= TIFF_UPSAMPLED;
+		    } else {
+			if (td->td_ycbcrsubsampling[0] != 1 ||
+			    td->td_ycbcrsubsampling[1] != 1)
+			    ; /* XXX what about up-sampling? */
+		    }
+		}
+		/*
+		 * Must recalculate cached tile size
+		 * in case sampling state changed.
+		 */
+		tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
+		return (1);			/* pseudo tag */
+	case TIFFTAG_JPEGTABLESMODE:
+		sp->jpegtablesmode = va_arg(ap, int);
+		return (1);			/* pseudo tag */
+	case TIFFTAG_YCBCRSUBSAMPLING:
+                /* mark the fact that we have a real ycbcrsubsampling! */
+		sp->ycbcrsampling_fetched = 1;
+		return (*sp->vsetparent)(tif, tag, ap);
+	case TIFFTAG_FAXRECVPARAMS:
+		sp->recvparams = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_FAXSUBADDRESS:
+		_TIFFsetString(&sp->subaddress, va_arg(ap, char*));
+		break;
+	case TIFFTAG_FAXRECVTIME:
+		sp->recvtime = va_arg(ap, uint32);
+		break;
+	case TIFFTAG_FAXDCS:
+		_TIFFsetString(&sp->faxdcs, va_arg(ap, char*));
+		break;
+	default:
+		return (*sp->vsetparent)(tif, tag, ap);
+	}
+	TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit);
+	tif->tif_flags |= TIFF_DIRTYDIRECT;
+	return (1);
+}
+
+/*
+ * Some JPEG-in-TIFF produces do not emit the YCBCRSUBSAMPLING values in
+ * the TIFF tags, but still use non-default (2,2) values within the jpeg
+ * data stream itself.  In order for TIFF applications to work properly
+ * - for instance to get the strip buffer size right - it is imperative
+ * that the subsampling be available before we start reading the image
+ * data normally.  This function will attempt to load the first strip in
+ * order to get the sampling values from the jpeg data stream.  Various
+ * hacks are various places are done to ensure this function gets called
+ * before the td_ycbcrsubsampling values are used from the directory structure,
+ * including calling TIFFGetField() for the YCBCRSUBSAMPLING field from 
+ * TIFFStripSize(), and the printing code in tif_print.c. 
+ *
+ * Note that JPEGPreDeocode() will produce a fairly loud warning when the
+ * discovered sampling does not match the default sampling (2,2) or whatever
+ * was actually in the tiff tags. 
+ *
+ * Problems:
+ *  o This code will cause one whole strip/tile of compressed data to be
+ *    loaded just to get the tags right, even if the imagery is never read.
+ *    It would be more efficient to just load a bit of the header, and
+ *    initialize things from that. 
+ *
+ * See the bug in bugzilla for details:
+ *
+ * http://bugzilla.remotesensing.org/show_bug.cgi?id=168
+ *
+ * Frank Warmerdam, July 2002
+ */
+
+static void 
+JPEGFixupTestSubsampling( TIFF * tif )
+{
+#ifdef CHECK_JPEG_YCBCR_SUBSAMPLING
+    JPEGState *sp = JState(tif);
+    TIFFDirectory *td = &tif->tif_dir;
+
+    JPEGInitializeLibJPEG( tif, 0, 0 );
+
+    /*
+     * Some JPEG-in-TIFF files don't provide the ycbcrsampling tags, 
+     * and use a sampling schema other than the default 2,2.  To handle
+     * this we actually have to scan the header of a strip or tile of
+     * jpeg data to get the sampling.  
+     */
+    if( !sp->cinfo.comm.is_decompressor 
+        || sp->ycbcrsampling_fetched  
+        || td->td_photometric != PHOTOMETRIC_YCBCR )
+        return;
+
+    sp->ycbcrsampling_fetched = 1;
+    if( TIFFIsTiled( tif ) )
+    {
+        if( !TIFFFillTile( tif, 0 ) )
+			return;
+    }
+    else
+	{
+        if( !TIFFFillStrip( tif, 0 ) )
+            return;
+    }
+
+    TIFFSetField( tif, TIFFTAG_YCBCRSUBSAMPLING, 
+                  (uint16) sp->h_sampling, (uint16) sp->v_sampling );
+#endif /* CHECK_JPEG_YCBCR_SUBSAMPLING */
+}
+
+static int
+JPEGVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	JPEGState* sp = JState(tif);
+
+	assert(sp != NULL);
+
+	switch (tag) {
+		case TIFFTAG_JPEGTABLES:
+			*va_arg(ap, uint32*) = sp->jpegtables_length;
+			*va_arg(ap, void**) = sp->jpegtables;
+			break;
+		case TIFFTAG_JPEGQUALITY:
+			*va_arg(ap, int*) = sp->jpegquality;
+			break;
+		case TIFFTAG_JPEGCOLORMODE:
+			*va_arg(ap, int*) = sp->jpegcolormode;
+			break;
+		case TIFFTAG_JPEGTABLESMODE:
+			*va_arg(ap, int*) = sp->jpegtablesmode;
+			break;
+		case TIFFTAG_YCBCRSUBSAMPLING:
+			JPEGFixupTestSubsampling( tif );
+			return (*sp->vgetparent)(tif, tag, ap);
+			break;
+		case TIFFTAG_FAXRECVPARAMS:
+			*va_arg(ap, uint32*) = sp->recvparams;
+			break;
+		case TIFFTAG_FAXSUBADDRESS:
+			*va_arg(ap, char**) = sp->subaddress;
+			break;
+		case TIFFTAG_FAXRECVTIME:
+			*va_arg(ap, uint32*) = sp->recvtime;
+			break;
+		case TIFFTAG_FAXDCS:
+			*va_arg(ap, char**) = sp->faxdcs;
+			break;
+		default:
+			return (*sp->vgetparent)(tif, tag, ap);
+	}
+	return (1);
+}
+
+static void
+JPEGPrintDir(TIFF* tif, FILE* fd, long flags)
+{
+	JPEGState* sp = JState(tif);
+
+	assert(sp != NULL);
+
+	(void) flags;
+	if (TIFFFieldSet(tif,FIELD_JPEGTABLES))
+		fprintf(fd, "  JPEG Tables: (%lu bytes)\n",
+			(unsigned long) sp->jpegtables_length);
+        if (TIFFFieldSet(tif,FIELD_RECVPARAMS))
+                fprintf(fd, "  Fax Receive Parameters: %08lx\n",
+                   (unsigned long) sp->recvparams);
+        if (TIFFFieldSet(tif,FIELD_SUBADDRESS))
+                fprintf(fd, "  Fax SubAddress: %s\n", sp->subaddress);
+        if (TIFFFieldSet(tif,FIELD_RECVTIME))
+                fprintf(fd, "  Fax Receive Time: %lu secs\n",
+                    (unsigned long) sp->recvtime);
+        if (TIFFFieldSet(tif,FIELD_FAXDCS))
+                fprintf(fd, "  Fax DCS: %s\n", sp->faxdcs);
+}
+
+static uint32
+JPEGDefaultStripSize(TIFF* tif, uint32 s)
+{
+	JPEGState* sp = JState(tif);
+	TIFFDirectory *td = &tif->tif_dir;
+
+	s = (*sp->defsparent)(tif, s);
+	if (s < td->td_imagelength)
+		s = TIFFroundup(s, td->td_ycbcrsubsampling[1] * DCTSIZE);
+	return (s);
+}
+
+static void
+JPEGDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
+{
+	JPEGState* sp = JState(tif);
+	TIFFDirectory *td = &tif->tif_dir;
+
+	(*sp->deftparent)(tif, tw, th);
+	*tw = TIFFroundup(*tw, td->td_ycbcrsubsampling[0] * DCTSIZE);
+	*th = TIFFroundup(*th, td->td_ycbcrsubsampling[1] * DCTSIZE);
+}
+
+/*
+ * The JPEG library initialized used to be done in TIFFInitJPEG(), but
+ * now that we allow a TIFF file to be opened in update mode it is necessary
+ * to have some way of deciding whether compression or decompression is
+ * desired other than looking at tif->tif_mode.  We accomplish this by 
+ * examining {TILE/STRIP}BYTECOUNTS to see if there is a non-zero entry.
+ * If so, we assume decompression is desired. 
+ *
+ * This is tricky, because TIFFInitJPEG() is called while the directory is
+ * being read, and generally speaking the BYTECOUNTS tag won't have been read
+ * at that point.  So we try to defer jpeg library initialization till we
+ * do have that tag ... basically any access that might require the compressor
+ * or decompressor that occurs after the reading of the directory. 
+ *
+ * In an ideal world compressors or decompressors would be setup
+ * at the point where a single tile or strip was accessed (for read or write)
+ * so that stuff like update of missing tiles, or replacement of tiles could
+ * be done. However, we aren't trying to crack that nut just yet ...
+ *
+ * NFW, Feb 3rd, 2003.
+ */
+
+static int JPEGInitializeLibJPEG( TIFF * tif, int force_encode, int force_decode )
+{
+    JPEGState* sp = JState(tif);
+    uint32 *byte_counts = NULL;
+    int     data_is_empty = TRUE;
+    int     decompress;
+
+    if( sp->cinfo_initialized )
+        return 1;
+
+    /*
+     * Do we have tile data already?  Make sure we initialize the
+     * the state in decompressor mode if we have tile data, even if we
+     * are not in read-only file access mode. 
+     */
+    if( TIFFIsTiled( tif ) 
+        && TIFFGetField( tif, TIFFTAG_TILEBYTECOUNTS, &byte_counts ) 
+        && byte_counts != NULL )
+    {
+        data_is_empty = byte_counts[0] == 0;
+    }
+    if( !TIFFIsTiled( tif ) 
+        && TIFFGetField( tif, TIFFTAG_STRIPBYTECOUNTS, &byte_counts) 
+        && byte_counts != NULL )
+    {
+        data_is_empty = byte_counts[0] == 0;
+    }
+
+    if( force_decode )
+        decompress = 1;
+    else if( force_encode )
+        decompress = 0;
+    else if( tif->tif_mode == O_RDONLY )
+        decompress = 1;
+    else if( data_is_empty )
+        decompress = 0;
+    else
+        decompress = 1;
+
+    /*
+     * Initialize libjpeg.
+     */
+    if ( decompress ) {
+        if (!TIFFjpeg_create_decompress(sp))
+            return (0);
+
+    } else {
+        if (!TIFFjpeg_create_compress(sp))
+            return (0);
+    }
+
+    sp->cinfo_initialized = TRUE;
+
+    return 1;
+}
+
+int
+TIFFInitJPEG(TIFF* tif, int scheme)
+{
+	JPEGState* sp;
+
+	assert(scheme == COMPRESSION_JPEG);
+
+	/*
+	 * Allocate state block so tag methods have storage to record values.
+	 */
+	tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (JPEGState));
+
+	if (tif->tif_data == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, "TIFFInitJPEG", "No space for JPEG state block");
+		return (0);
+	}
+        _TIFFmemset( tif->tif_data, 0, sizeof(JPEGState));
+
+	sp = JState(tif);
+	sp->tif = tif;				/* back link */
+
+	/*
+	 * Merge codec-specific tag information and override parent get/set
+	 * field methods.
+	 */
+	_TIFFMergeFieldInfo(tif, jpegFieldInfo, N(jpegFieldInfo));
+	sp->vgetparent = tif->tif_tagmethods.vgetfield;
+	tif->tif_tagmethods.vgetfield = JPEGVGetField; /* hook for codec tags */
+	sp->vsetparent = tif->tif_tagmethods.vsetfield;
+	tif->tif_tagmethods.vsetfield = JPEGVSetField; /* hook for codec tags */
+	tif->tif_tagmethods.printdir = JPEGPrintDir;   /* hook for codec tags */
+
+	/* Default values for codec-specific fields */
+	sp->jpegtables = NULL;
+	sp->jpegtables_length = 0;
+	sp->jpegquality = 75;			/* Default IJG quality */
+	sp->jpegcolormode = JPEGCOLORMODE_RAW;
+	sp->jpegtablesmode = JPEGTABLESMODE_QUANT | JPEGTABLESMODE_HUFF;
+
+        sp->recvparams = 0;
+        sp->subaddress = NULL;
+        sp->faxdcs = NULL;
+
+        sp->ycbcrsampling_fetched = 0;
+
+	/*
+	 * Install codec methods.
+	 */
+	tif->tif_setupdecode = JPEGSetupDecode;
+	tif->tif_predecode = JPEGPreDecode;
+	tif->tif_decoderow = JPEGDecode;
+	tif->tif_decodestrip = JPEGDecode;
+	tif->tif_decodetile = JPEGDecode;
+	tif->tif_setupencode = JPEGSetupEncode;
+	tif->tif_preencode = JPEGPreEncode;
+	tif->tif_postencode = JPEGPostEncode;
+	tif->tif_encoderow = JPEGEncode;
+	tif->tif_encodestrip = JPEGEncode;
+	tif->tif_encodetile = JPEGEncode;
+	tif->tif_cleanup = JPEGCleanup;
+	sp->defsparent = tif->tif_defstripsize;
+	tif->tif_defstripsize = JPEGDefaultStripSize;
+	sp->deftparent = tif->tif_deftilesize;
+	tif->tif_deftilesize = JPEGDefaultTileSize;
+	tif->tif_flags |= TIFF_NOBITREV;	/* no bit reversal, please */
+
+        sp->cinfo_initialized = FALSE;
+
+	/*
+        ** Create a JPEGTables field if no directory has yet been created. 
+        ** We do this just to ensure that sufficient space is reserved for
+        ** the JPEGTables field.  It will be properly created the right
+        ** size later. 
+        */
+        if( tif->tif_diroff == 0 )
+        {
+#define SIZE_OF_JPEGTABLES 2000
+            TIFFSetFieldBit(tif, FIELD_JPEGTABLES);
+            sp->jpegtables_length = SIZE_OF_JPEGTABLES;
+            sp->jpegtables = (void *) _TIFFmalloc(sp->jpegtables_length);
+	    _TIFFmemset(sp->jpegtables, 0, SIZE_OF_JPEGTABLES);
+#undef SIZE_OF_JPEGTABLES
+        }
+
+        /*
+         * Mark the TIFFTAG_YCBCRSAMPLES as present even if it is not
+         * see: JPEGFixupTestSubsampling().
+         */
+        TIFFSetFieldBit( tif, FIELD_YCBCRSUBSAMPLING );
+
+	return 1;
+}
+#endif /* JPEG_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_luv.c b/src/libtiff/tif_luv.c
new file mode 100644
index 0000000..484bc4f
--- /dev/null
+++ b/src/libtiff/tif_luv.c
@@ -0,0 +1,1606 @@
+/* $Id: tif_luv.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1997 Greg Ward Larson
+ * Copyright (c) 1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler, Greg Larson and Silicon Graphics may not be used in any
+ * advertising or publicity relating to the software without the specific,
+ * prior written permission of Sam Leffler, Greg Larson and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER, GREG LARSON OR SILICON GRAPHICS BE LIABLE
+ * FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef LOGLUV_SUPPORT
+
+/*
+ * TIFF Library.
+ * LogLuv compression support for high dynamic range images.
+ *
+ * Contributed by Greg Larson.
+ *
+ * LogLuv image support uses the TIFF library to store 16 or 10-bit
+ * log luminance values with 8 bits each of u and v or a 14-bit index.
+ *
+ * The codec can take as input and produce as output 32-bit IEEE float values 
+ * as well as 16-bit integer values.  A 16-bit luminance is interpreted
+ * as a sign bit followed by a 15-bit integer that is converted
+ * to and from a linear magnitude using the transformation:
+ *
+ *	L = 2^( (Le+.5)/256 - 64 )		# real from 15-bit
+ *
+ *	Le = floor( 256*(log2(L) + 64) )	# 15-bit from real
+ *
+ * The actual conversion to world luminance units in candelas per sq. meter
+ * requires an additional multiplier, which is stored in the TIFFTAG_STONITS.
+ * This value is usually set such that a reasonable exposure comes from
+ * clamping decoded luminances above 1 to 1 in the displayed image.
+ *
+ * The 16-bit values for u and v may be converted to real values by dividing
+ * each by 32768.  (This allows for negative values, which aren't useful as
+ * far as we know, but are left in case of future improvements in human
+ * color vision.)
+ *
+ * Conversion from (u,v), which is actually the CIE (u',v') system for
+ * you color scientists, is accomplished by the following transformation:
+ *
+ *	u = 4*x / (-2*x + 12*y + 3)
+ *	v = 9*y / (-2*x + 12*y + 3)
+ *
+ *	x = 9*u / (6*u - 16*v + 12)
+ *	y = 4*v / (6*u - 16*v + 12)
+ *
+ * This process is greatly simplified by passing 32-bit IEEE floats
+ * for each of three CIE XYZ coordinates.  The codec then takes care
+ * of conversion to and from LogLuv, though the application is still
+ * responsible for interpreting the TIFFTAG_STONITS calibration factor.
+ *
+ * By definition, a CIE XYZ vector of [1 1 1] corresponds to a neutral white
+ * point of (x,y)=(1/3,1/3).  However, most color systems assume some other
+ * white point, such as D65, and an absolute color conversion to XYZ then
+ * to another color space with a different white point may introduce an
+ * unwanted color cast to the image.  It is often desirable, therefore, to
+ * perform a white point conversion that maps the input white to [1 1 1]
+ * in XYZ, then record the original white point using the TIFFTAG_WHITEPOINT
+ * tag value.  A decoder that demands absolute color calibration may use
+ * this white point tag to get back the original colors, but usually it
+ * will be ignored and the new white point will be used instead that
+ * matches the output color space.
+ *
+ * Pixel information is compressed into one of two basic encodings, depending
+ * on the setting of the compression tag, which is one of COMPRESSION_SGILOG
+ * or COMPRESSION_SGILOG24.  For COMPRESSION_SGILOG, greyscale data is
+ * stored as:
+ *
+ *	 1       15
+ *	|-+---------------|
+ *
+ * COMPRESSION_SGILOG color data is stored as:
+ *
+ *	 1       15           8        8
+ *	|-+---------------|--------+--------|
+ *	 S       Le           ue       ve
+ *
+ * For the 24-bit COMPRESSION_SGILOG24 color format, the data is stored as:
+ *
+ *	     10           14
+ *	|----------|--------------|
+ *	     Le'          Ce
+ *
+ * There is no sign bit in the 24-bit case, and the (u,v) chromaticity is
+ * encoded as an index for optimal color resolution.  The 10 log bits are
+ * defined by the following conversions:
+ *
+ *	L = 2^((Le'+.5)/64 - 12)		# real from 10-bit
+ *
+ *	Le' = floor( 64*(log2(L) + 12) )	# 10-bit from real
+ *
+ * The 10 bits of the smaller format may be converted into the 15 bits of
+ * the larger format by multiplying by 4 and adding 13314.  Obviously,
+ * a smaller range of magnitudes is covered (about 5 orders of magnitude
+ * instead of 38), and the lack of a sign bit means that negative luminances
+ * are not allowed.  (Well, they aren't allowed in the real world, either,
+ * but they are useful for certain types of image processing.)
+ *
+ * The desired user format is controlled by the setting the internal
+ * pseudo tag TIFFTAG_SGILOGDATAFMT to one of:
+ *  SGILOGDATAFMT_FLOAT       = IEEE 32-bit float XYZ values
+ *  SGILOGDATAFMT_16BIT	      = 16-bit integer encodings of logL, u and v
+ * Raw data i/o is also possible using:
+ *  SGILOGDATAFMT_RAW         = 32-bit unsigned integer with encoded pixel
+ * In addition, the following decoding is provided for ease of display:
+ *  SGILOGDATAFMT_8BIT        = 8-bit default RGB gamma-corrected values
+ *
+ * For grayscale images, we provide the following data formats:
+ *  SGILOGDATAFMT_FLOAT       = IEEE 32-bit float Y values
+ *  SGILOGDATAFMT_16BIT       = 16-bit integer w/ encoded luminance
+ *  SGILOGDATAFMT_8BIT        = 8-bit gray monitor values
+ *
+ * Note that the COMPRESSION_SGILOG applies a simple run-length encoding
+ * scheme by separating the logL, u and v bytes for each row and applying
+ * a PackBits type of compression.  Since the 24-bit encoding is not
+ * adaptive, the 32-bit color format takes less space in many cases.
+ *
+ * Further control is provided over the conversion from higher-resolution
+ * formats to final encoded values through the pseudo tag
+ * TIFFTAG_SGILOGENCODE:
+ *  SGILOGENCODE_NODITHER     = do not dither encoded values
+ *  SGILOGENCODE_RANDITHER    = apply random dithering during encoding
+ *
+ * The default value of this tag is SGILOGENCODE_NODITHER for
+ * COMPRESSION_SGILOG to maximize run-length encoding and
+ * SGILOGENCODE_RANDITHER for COMPRESSION_SGILOG24 to turn
+ * quantization errors into noise.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+/*
+ * State block for each open TIFF
+ * file using LogLuv compression/decompression.
+ */
+typedef	struct logLuvState LogLuvState;
+
+struct logLuvState {
+	int			user_datafmt;	/* user data format */
+	int			encode_meth;	/* encoding method */
+	int			pixel_size;	/* bytes per pixel */
+
+	tidata_t*		tbuf;		/* translation buffer */
+	int			tbuflen;	/* buffer length */
+	void (*tfunc)(LogLuvState*, tidata_t, int);
+
+	TIFFVSetMethod		vgetparent;	/* super-class method */
+	TIFFVSetMethod		vsetparent;	/* super-class method */
+};
+
+#define	DecoderState(tif)	((LogLuvState*) (tif)->tif_data)
+#define	EncoderState(tif)	((LogLuvState*) (tif)->tif_data)
+
+#define SGILOGDATAFMT_UNKNOWN	-1
+
+#define MINRUN		4	/* minimum run length */
+
+/*
+ * Decode a string of 16-bit gray pixels.
+ */
+static int
+LogL16Decode(TIFF* tif, tidata_t op, tsize_t occ, tsample_t s)
+{
+	LogLuvState* sp = DecoderState(tif);
+	int shft, i, npixels;
+	unsigned char* bp;
+	int16* tp;
+	int16 b;
+	int cc, rc;
+
+	assert(s == 0);
+	assert(sp != NULL);
+
+	npixels = occ / sp->pixel_size;
+
+	if (sp->user_datafmt == SGILOGDATAFMT_16BIT)
+		tp = (int16*) op;
+	else {
+		assert(sp->tbuflen >= npixels);
+		tp = (int16*) sp->tbuf;
+	}
+	_TIFFmemset((tdata_t) tp, 0, npixels*sizeof (tp[0]));
+
+	bp = (unsigned char*) tif->tif_rawcp;
+	cc = tif->tif_rawcc;
+					/* get each byte string */
+	for (shft = 2*8; (shft -= 8) >= 0; ) {
+		for (i = 0; i < npixels && cc > 0; )
+			if (*bp >= 128) {		/* run */
+				rc = *bp++ + (2-128);
+				b = (int16)(*bp++ << shft);
+				cc -= 2;
+				while (rc-- && i < npixels)
+					tp[i++] |= b;
+			} else {			/* non-run */
+				rc = *bp++;		/* nul is noop */
+				while (--cc && rc-- && i < npixels)
+					tp[i++] |= (int16)*bp++ << shft;
+			}
+		if (i != npixels) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		"LogL16Decode: Not enough data at row %d (short %d pixels)",
+			    tif->tif_row, npixels - i);
+			tif->tif_rawcp = (tidata_t) bp;
+			tif->tif_rawcc = cc;
+			return (0);
+		}
+	}
+	(*sp->tfunc)(sp, op, npixels);
+	tif->tif_rawcp = (tidata_t) bp;
+	tif->tif_rawcc = cc;
+	return (1);
+}
+
+/*
+ * Decode a string of 24-bit pixels.
+ */
+static int
+LogLuvDecode24(TIFF* tif, tidata_t op, tsize_t occ, tsample_t s)
+{
+	LogLuvState* sp = DecoderState(tif);
+	int cc, i, npixels;
+	unsigned char* bp;
+	uint32* tp;
+
+	assert(s == 0);
+	assert(sp != NULL);
+
+	npixels = occ / sp->pixel_size;
+
+	if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+		tp = (uint32 *)op;
+	else {
+		assert(sp->tbuflen >= npixels);
+		tp = (uint32 *) sp->tbuf;
+	}
+					/* copy to array of uint32 */
+	bp = (unsigned char*) tif->tif_rawcp;
+	cc = tif->tif_rawcc;
+	for (i = 0; i < npixels && cc > 0; i++) {
+		tp[i] = bp[0] << 16 | bp[1] << 8 | bp[2];
+		bp += 3;
+		cc -= 3;
+	}
+	tif->tif_rawcp = (tidata_t) bp;
+	tif->tif_rawcc = cc;
+	if (i != npixels) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    "LogLuvDecode24: Not enough data at row %d (short %d pixels)",
+		    tif->tif_row, npixels - i);
+		return (0);
+	}
+	(*sp->tfunc)(sp, op, npixels);
+	return (1);
+}
+
+/*
+ * Decode a string of 32-bit pixels.
+ */
+static int
+LogLuvDecode32(TIFF* tif, tidata_t op, tsize_t occ, tsample_t s)
+{
+	LogLuvState* sp;
+	int shft, i, npixels;
+	unsigned char* bp;
+	uint32* tp;
+	uint32 b;
+	int cc, rc;
+
+	assert(s == 0);
+	sp = DecoderState(tif);
+	assert(sp != NULL);
+
+	npixels = occ / sp->pixel_size;
+
+	if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+		tp = (uint32*) op;
+	else {
+		assert(sp->tbuflen >= npixels);
+		tp = (uint32*) sp->tbuf;
+	}
+	_TIFFmemset((tdata_t) tp, 0, npixels*sizeof (tp[0]));
+
+	bp = (unsigned char*) tif->tif_rawcp;
+	cc = tif->tif_rawcc;
+					/* get each byte string */
+	for (shft = 4*8; (shft -= 8) >= 0; ) {
+		for (i = 0; i < npixels && cc > 0; )
+			if (*bp >= 128) {		/* run */
+				rc = *bp++ + (2-128);
+				b = (uint32)*bp++ << shft;
+				cc -= 2;
+				while (rc-- && i < npixels)
+					tp[i++] |= b;
+			} else {			/* non-run */
+				rc = *bp++;		/* nul is noop */
+				while (--cc && rc-- && i < npixels)
+					tp[i++] |= (uint32)*bp++ << shft;
+			}
+		if (i != npixels) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		"LogLuvDecode32: Not enough data at row %d (short %d pixels)",
+			    tif->tif_row, npixels - i);
+			tif->tif_rawcp = (tidata_t) bp;
+			tif->tif_rawcc = cc;
+			return (0);
+		}
+	}
+	(*sp->tfunc)(sp, op, npixels);
+	tif->tif_rawcp = (tidata_t) bp;
+	tif->tif_rawcc = cc;
+	return (1);
+}
+
+/*
+ * Decode a strip of pixels.  We break it into rows to
+ * maintain synchrony with the encode algorithm, which
+ * is row by row.
+ */
+static int
+LogLuvDecodeStrip(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	tsize_t rowlen = TIFFScanlineSize(tif);
+
+	assert(cc%rowlen == 0);
+	while (cc && (*tif->tif_decoderow)(tif, bp, rowlen, s))
+		bp += rowlen, cc -= rowlen;
+	return (cc == 0);
+}
+
+/*
+ * Decode a tile of pixels.  We break it into rows to
+ * maintain synchrony with the encode algorithm, which
+ * is row by row.
+ */
+static int
+LogLuvDecodeTile(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	tsize_t rowlen = TIFFTileRowSize(tif);
+
+	assert(cc%rowlen == 0);
+	while (cc && (*tif->tif_decoderow)(tif, bp, rowlen, s))
+		bp += rowlen, cc -= rowlen;
+	return (cc == 0);
+}
+
+/*
+ * Encode a row of 16-bit pixels.
+ */
+static int
+LogL16Encode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	LogLuvState* sp = EncoderState(tif);
+	int shft, i, j, npixels;
+	tidata_t op;
+	int16* tp;
+	int16 b;
+	int occ, rc=0, mask, beg;
+
+	assert(s == 0);
+	assert(sp != NULL);
+	npixels = cc / sp->pixel_size;
+
+	if (sp->user_datafmt == SGILOGDATAFMT_16BIT)
+		tp = (int16*) bp;
+	else {
+		tp = (int16*) sp->tbuf;
+		assert(sp->tbuflen >= npixels);
+		(*sp->tfunc)(sp, bp, npixels);
+	}
+					/* compress each byte string */
+	op = tif->tif_rawcp;
+	occ = tif->tif_rawdatasize - tif->tif_rawcc;
+	for (shft = 2*8; (shft -= 8) >= 0; )
+		for (i = 0; i < npixels; i += rc) {
+			if (occ < 4) {
+				tif->tif_rawcp = op;
+				tif->tif_rawcc = tif->tif_rawdatasize - occ;
+				if (!TIFFFlushData1(tif))
+					return (-1);
+				op = tif->tif_rawcp;
+				occ = tif->tif_rawdatasize - tif->tif_rawcc;
+			}
+			mask = 0xff << shft;		/* find next run */
+			for (beg = i; beg < npixels; beg += rc) {
+				b = (int16) (tp[beg] & mask);
+				rc = 1;
+				while (rc < 127+2 && beg+rc < npixels &&
+						(tp[beg+rc] & mask) == b)
+					rc++;
+				if (rc >= MINRUN)
+					break;		/* long enough */
+			}
+			if (beg-i > 1 && beg-i < MINRUN) {
+				b = (int16) (tp[i] & mask);/*check short run */
+				j = i+1;
+				while ((tp[j++] & mask) == b)
+                                    if (j == beg) {
+                                        *op++ = (tidataval_t)(128-2+j-i);
+                                        *op++ = (tidataval_t) (b >> shft);
+                                        occ -= 2;
+                                        i = beg;
+                                        break;
+                                    }
+			}
+			while (i < beg) {		/* write out non-run */
+				if ((j = beg-i) > 127) j = 127;
+				if (occ < j+3) {
+                                    tif->tif_rawcp = op;
+                                    tif->tif_rawcc = tif->tif_rawdatasize - occ;
+                                    if (!TIFFFlushData1(tif))
+                                        return (-1);
+                                    op = tif->tif_rawcp;
+                                    occ = tif->tif_rawdatasize - tif->tif_rawcc;
+				}
+				*op++ = (tidataval_t) j; occ--;
+				while (j--) {
+					*op++ = (tidataval_t) (tp[i++] >> shft & 0xff);
+					occ--;
+				}
+			}
+			if (rc >= MINRUN) {		/* write out run */
+				*op++ = (tidataval_t) (128-2+rc);
+				*op++ = (tidataval_t) (tp[beg] >> shft & 0xff);
+				occ -= 2;
+			} else
+				rc = 0;
+		}
+	tif->tif_rawcp = op;
+	tif->tif_rawcc = tif->tif_rawdatasize - occ;
+
+	return (0);
+}
+
+/*
+ * Encode a row of 24-bit pixels.
+ */
+static int
+LogLuvEncode24(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	LogLuvState* sp = EncoderState(tif);
+	int i, npixels, occ;
+	tidata_t op;
+	uint32* tp;
+
+	assert(s == 0);
+	assert(sp != NULL);
+	npixels = cc / sp->pixel_size;
+
+	if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+		tp = (uint32*) bp;
+	else {
+		tp = (uint32*) sp->tbuf;
+		assert(sp->tbuflen >= npixels);
+		(*sp->tfunc)(sp, bp, npixels);
+	}
+					/* write out encoded pixels */
+	op = tif->tif_rawcp;
+	occ = tif->tif_rawdatasize - tif->tif_rawcc;
+	for (i = npixels; i--; ) {
+		if (occ < 3) {
+			tif->tif_rawcp = op;
+			tif->tif_rawcc = tif->tif_rawdatasize - occ;
+			if (!TIFFFlushData1(tif))
+				return (-1);
+			op = tif->tif_rawcp;
+			occ = tif->tif_rawdatasize - tif->tif_rawcc;
+		}
+		*op++ = (tidataval_t)(*tp >> 16);
+		*op++ = (tidataval_t)(*tp >> 8 & 0xff);
+		*op++ = (tidataval_t)(*tp++ & 0xff);
+		occ -= 3;
+	}
+	tif->tif_rawcp = op;
+	tif->tif_rawcc = tif->tif_rawdatasize - occ;
+
+	return (0);
+}
+
+/*
+ * Encode a row of 32-bit pixels.
+ */
+static int
+LogLuvEncode32(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	LogLuvState* sp = EncoderState(tif);
+	int shft, i, j, npixels;
+	tidata_t op;
+	uint32* tp;
+	uint32 b;
+	int occ, rc=0, mask, beg;
+
+	assert(s == 0);
+	assert(sp != NULL);
+
+	npixels = cc / sp->pixel_size;
+
+	if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+		tp = (uint32*) bp;
+	else {
+		tp = (uint32*) sp->tbuf;
+		assert(sp->tbuflen >= npixels);
+		(*sp->tfunc)(sp, bp, npixels);
+	}
+					/* compress each byte string */
+	op = tif->tif_rawcp;
+	occ = tif->tif_rawdatasize - tif->tif_rawcc;
+	for (shft = 4*8; (shft -= 8) >= 0; )
+		for (i = 0; i < npixels; i += rc) {
+			if (occ < 4) {
+				tif->tif_rawcp = op;
+				tif->tif_rawcc = tif->tif_rawdatasize - occ;
+				if (!TIFFFlushData1(tif))
+					return (-1);
+				op = tif->tif_rawcp;
+				occ = tif->tif_rawdatasize - tif->tif_rawcc;
+			}
+			mask = 0xff << shft;		/* find next run */
+			for (beg = i; beg < npixels; beg += rc) {
+				b = tp[beg] & mask;
+				rc = 1;
+				while (rc < 127+2 && beg+rc < npixels &&
+						(tp[beg+rc] & mask) == b)
+					rc++;
+				if (rc >= MINRUN)
+					break;		/* long enough */
+			}
+			if (beg-i > 1 && beg-i < MINRUN) {
+				b = tp[i] & mask;	/* check short run */
+				j = i+1;
+				while ((tp[j++] & mask) == b)
+					if (j == beg) {
+						*op++ = (tidataval_t)(128-2+j-i);
+						*op++ = (tidataval_t)(b >> shft);
+						occ -= 2;
+						i = beg;
+						break;
+					}
+			}
+			while (i < beg) {		/* write out non-run */
+				if ((j = beg-i) > 127) j = 127;
+				if (occ < j+3) {
+					tif->tif_rawcp = op;
+					tif->tif_rawcc = tif->tif_rawdatasize - occ;
+					if (!TIFFFlushData1(tif))
+						return (-1);
+					op = tif->tif_rawcp;
+					occ = tif->tif_rawdatasize - tif->tif_rawcc;
+				}
+				*op++ = (tidataval_t) j; occ--;
+				while (j--) {
+					*op++ = (tidataval_t)(tp[i++] >> shft & 0xff);
+					occ--;
+				}
+			}
+			if (rc >= MINRUN) {		/* write out run */
+				*op++ = (tidataval_t) (128-2+rc);
+				*op++ = (tidataval_t)(tp[beg] >> shft & 0xff);
+				occ -= 2;
+			} else
+				rc = 0;
+		}
+	tif->tif_rawcp = op;
+	tif->tif_rawcc = tif->tif_rawdatasize - occ;
+
+	return (0);
+}
+
+/*
+ * Encode a strip of pixels.  We break it into rows to
+ * avoid encoding runs across row boundaries.
+ */
+static int
+LogLuvEncodeStrip(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	tsize_t rowlen = TIFFScanlineSize(tif);
+
+	assert(cc%rowlen == 0);
+	while (cc && (*tif->tif_encoderow)(tif, bp, rowlen, s) == 0)
+		bp += rowlen, cc -= rowlen;
+	return (cc == 0);
+}
+
+/*
+ * Encode a tile of pixels.  We break it into rows to
+ * avoid encoding runs across row boundaries.
+ */
+static int
+LogLuvEncodeTile(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	tsize_t rowlen = TIFFTileRowSize(tif);
+
+	assert(cc%rowlen == 0);
+	while (cc && (*tif->tif_encoderow)(tif, bp, rowlen, s) == 0)
+		bp += rowlen, cc -= rowlen;
+	return (cc == 0);
+}
+
+/*
+ * Encode/Decode functions for converting to and from user formats.
+ */
+
+#include "uvcode.h"
+
+#ifndef UVSCALE
+#define U_NEU		0.210526316
+#define V_NEU		0.473684211
+#define UVSCALE		410.
+#endif
+
+#ifndef	M_LN2
+#define M_LN2		0.69314718055994530942
+#endif
+#ifndef M_PI
+#define M_PI		3.14159265358979323846
+#endif
+#define log2(x)		((1./M_LN2)*log(x))
+#define exp2(x)		exp(M_LN2*(x))
+
+#define itrunc(x,m)	((m)==SGILOGENCODE_NODITHER ? \
+				(int)(x) : \
+				(int)((x) + rand()*(1./RAND_MAX) - .5))
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+double
+LogL16toY(int p16)		/* compute luminance from 16-bit LogL */
+{
+	int	Le = p16 & 0x7fff;
+	double	Y;
+
+	if (!Le)
+		return (0.);
+	Y = exp(M_LN2/256.*(Le+.5) - M_LN2*64.);
+	return (!(p16 & 0x8000) ? Y : -Y);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+LogL16fromY(double Y, int em)	/* get 16-bit LogL from Y */
+{
+	if (Y >= 1.8371976e19)
+		return (0x7fff);
+	if (Y <= -1.8371976e19)
+		return (0xffff);
+	if (Y > 5.4136769e-20)
+		return itrunc(256.*(log2(Y) + 64.), em);
+	if (Y < -5.4136769e-20)
+		return (~0x7fff | itrunc(256.*(log2(-Y) + 64.), em));
+	return (0);
+}
+
+static void
+L16toY(LogLuvState* sp, tidata_t op, int n)
+{
+	int16* l16 = (int16*) sp->tbuf;
+	float* yp = (float*) op;
+
+	while (n-- > 0)
+		*yp++ = (float)LogL16toY(*l16++);
+}
+
+static void
+L16toGry(LogLuvState* sp, tidata_t op, int n)
+{
+	int16* l16 = (int16*) sp->tbuf;
+	uint8* gp = (uint8*) op;
+
+	while (n-- > 0) {
+		double Y = LogL16toY(*l16++);
+		*gp++ = (uint8) ((Y <= 0.) ? 0 : (Y >= 1.) ? 255 : (int)(256.*sqrt(Y)));
+	}
+}
+
+static void
+L16fromY(LogLuvState* sp, tidata_t op, int n)
+{
+	int16* l16 = (int16*) sp->tbuf;
+	float* yp = (float*) op;
+
+	while (n-- > 0)
+		*l16++ = (int16) (LogL16fromY(*yp++, sp->encode_meth));
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+void
+XYZtoRGB24(float xyz[3], uint8 rgb[3])
+{
+	double	r, g, b;
+					/* assume CCIR-709 primaries */
+	r =  2.690*xyz[0] + -1.276*xyz[1] + -0.414*xyz[2];
+	g = -1.022*xyz[0] +  1.978*xyz[1] +  0.044*xyz[2];
+	b =  0.061*xyz[0] + -0.224*xyz[1] +  1.163*xyz[2];
+					/* assume 2.0 gamma for speed */
+	/* could use integer sqrt approx., but this is probably faster */
+	rgb[0] = (uint8)((r<=0.) ? 0 : (r >= 1.) ? 255 : (int)(256.*sqrt(r)));
+	rgb[1] = (uint8)((g<=0.) ? 0 : (g >= 1.) ? 255 : (int)(256.*sqrt(g)));
+	rgb[2] = (uint8)((b<=0.) ? 0 : (b >= 1.) ? 255 : (int)(256.*sqrt(b)));
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+double
+LogL10toY(int p10)		/* compute luminance from 10-bit LogL */
+{
+	if (p10 == 0)
+		return (0.);
+	return (exp(M_LN2/64.*(p10+.5) - M_LN2*12.));
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+LogL10fromY(double Y, int em)	/* get 10-bit LogL from Y */
+{
+	if (Y >= 15.742)
+		return (0x3ff);
+	else if (Y <= .00024283)
+		return (0);
+	else
+		return itrunc(64.*(log2(Y) + 12.), em);
+}
+
+#define NANGLES		100
+#define uv2ang(u, v)	( (NANGLES*.499999999/M_PI) \
+				* atan2((v)-V_NEU,(u)-U_NEU) + .5*NANGLES )
+
+static int
+oog_encode(double u, double v)		/* encode out-of-gamut chroma */
+{
+	static int	oog_table[NANGLES];
+	static int	initialized = 0;
+	register int	i;
+	
+	if (!initialized) {		/* set up perimeter table */
+		double	eps[NANGLES], ua, va, ang, epsa;
+		int	ui, vi, ustep;
+		for (i = NANGLES; i--; )
+			eps[i] = 2.;
+		for (vi = UV_NVS; vi--; ) {
+			va = UV_VSTART + (vi+.5)*UV_SQSIZ;
+			ustep = uv_row[vi].nus-1;
+			if (vi == UV_NVS-1 || vi == 0 || ustep <= 0)
+				ustep = 1;
+			for (ui = uv_row[vi].nus-1; ui >= 0; ui -= ustep) {
+				ua = uv_row[vi].ustart + (ui+.5)*UV_SQSIZ;
+				ang = uv2ang(ua, va);
+                                i = (int) ang;
+				epsa = fabs(ang - (i+.5));
+				if (epsa < eps[i]) {
+					oog_table[i] = uv_row[vi].ncum + ui;
+					eps[i] = epsa;
+				}
+			}
+		}
+		for (i = NANGLES; i--; )	/* fill any holes */
+			if (eps[i] > 1.5) {
+				int	i1, i2;
+				for (i1 = 1; i1 < NANGLES/2; i1++)
+					if (eps[(i+i1)%NANGLES] < 1.5)
+						break;
+				for (i2 = 1; i2 < NANGLES/2; i2++)
+					if (eps[(i+NANGLES-i2)%NANGLES] < 1.5)
+						break;
+				if (i1 < i2)
+					oog_table[i] =
+						oog_table[(i+i1)%NANGLES];
+				else
+					oog_table[i] =
+						oog_table[(i+NANGLES-i2)%NANGLES];
+			}
+		initialized = 1;
+	}
+	i = (int) uv2ang(u, v);		/* look up hue angle */
+	return (oog_table[i]);
+}
+
+#undef uv2ang
+#undef NANGLES
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+uv_encode(double u, double v, int em)	/* encode (u',v') coordinates */
+{
+	register int	vi, ui;
+
+	if (v < UV_VSTART)
+		return oog_encode(u, v);
+	vi = itrunc((v - UV_VSTART)*(1./UV_SQSIZ), em);
+	if (vi >= UV_NVS)
+		return oog_encode(u, v);
+	if (u < uv_row[vi].ustart)
+		return oog_encode(u, v);
+	ui = itrunc((u - uv_row[vi].ustart)*(1./UV_SQSIZ), em);
+	if (ui >= uv_row[vi].nus)
+		return oog_encode(u, v);
+
+	return (uv_row[vi].ncum + ui);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+int
+uv_decode(double *up, double *vp, int c)	/* decode (u',v') index */
+{
+	int	upper, lower;
+	register int	ui, vi;
+
+	if (c < 0 || c >= UV_NDIVS)
+		return (-1);
+	lower = 0;				/* binary search */
+	upper = UV_NVS;
+	while (upper - lower > 1) {
+		vi = (lower + upper) >> 1;
+		ui = c - uv_row[vi].ncum;
+		if (ui > 0)
+			lower = vi;
+		else if (ui < 0)
+			upper = vi;
+		else {
+			lower = vi;
+			break;
+		}
+	}
+	vi = lower;
+	ui = c - uv_row[vi].ncum;
+	*up = uv_row[vi].ustart + (ui+.5)*UV_SQSIZ;
+	*vp = UV_VSTART + (vi+.5)*UV_SQSIZ;
+	return (0);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+void
+LogLuv24toXYZ(uint32 p, float XYZ[3])
+{
+	int	Ce;
+	double	L, u, v, s, x, y;
+					/* decode luminance */
+	L = LogL10toY(p>>14 & 0x3ff);
+	if (L <= 0.) {
+		XYZ[0] = XYZ[1] = XYZ[2] = 0.;
+		return;
+	}
+					/* decode color */
+	Ce = p & 0x3fff;
+	if (uv_decode(&u, &v, Ce) < 0) {
+		u = U_NEU; v = V_NEU;
+	}
+	s = 1./(6.*u - 16.*v + 12.);
+	x = 9.*u * s;
+	y = 4.*v * s;
+					/* convert to XYZ */
+	XYZ[0] = (float)(x/y * L);
+	XYZ[1] = (float)L;
+	XYZ[2] = (float)((1.-x-y)/y * L);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+uint32
+LogLuv24fromXYZ(float XYZ[3], int em)
+{
+	int	Le, Ce;
+	double	u, v, s;
+					/* encode luminance */
+	Le = LogL10fromY(XYZ[1], em);
+					/* encode color */
+	s = XYZ[0] + 15.*XYZ[1] + 3.*XYZ[2];
+	if (!Le || s <= 0.) {
+		u = U_NEU;
+		v = V_NEU;
+	} else {
+		u = 4.*XYZ[0] / s;
+		v = 9.*XYZ[1] / s;
+	}
+	Ce = uv_encode(u, v, em);
+	if (Ce < 0)			/* never happens */
+		Ce = uv_encode(U_NEU, V_NEU, SGILOGENCODE_NODITHER);
+					/* combine encodings */
+	return (Le << 14 | Ce);
+}
+
+static void
+Luv24toXYZ(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	float* xyz = (float*) op;
+
+	while (n-- > 0) {
+		LogLuv24toXYZ(*luv, xyz);
+		xyz += 3;
+		luv++;
+	}
+}
+
+static void
+Luv24toLuv48(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	int16* luv3 = (int16*) op;
+
+	while (n-- > 0) {
+		double u, v;
+
+		*luv3++ = (int16)((*luv >> 12 & 0xffd) + 13314);
+		if (uv_decode(&u, &v, *luv&0x3fff) < 0) {
+			u = U_NEU;
+			v = V_NEU;
+		}
+		*luv3++ = (int16)(u * (1L<<15));
+		*luv3++ = (int16)(v * (1L<<15));
+		luv++;
+	}
+}
+
+static void
+Luv24toRGB(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	uint8* rgb = (uint8*) op;
+
+	while (n-- > 0) {
+		float xyz[3];
+
+		LogLuv24toXYZ(*luv++, xyz);
+		XYZtoRGB24(xyz, rgb);
+		rgb += 3;
+	}
+}
+
+static void
+Luv24fromXYZ(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	float* xyz = (float*) op;
+
+	while (n-- > 0) {
+		*luv++ = LogLuv24fromXYZ(xyz, sp->encode_meth);
+		xyz += 3;
+	}
+}
+
+static void
+Luv24fromLuv48(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	int16* luv3 = (int16*) op;
+
+	while (n-- > 0) {
+		int Le, Ce;
+
+		if (luv3[0] <= 0)
+			Le = 0;
+		else if (luv3[0] >= (1<<12)+3314)
+			Le = (1<<10) - 1;
+		else if (sp->encode_meth == SGILOGENCODE_NODITHER)
+			Le = (luv3[0]-3314) >> 2;
+		else
+			Le = itrunc(.25*(luv3[0]-3314.), sp->encode_meth);
+
+		Ce = uv_encode((luv3[1]+.5)/(1<<15), (luv3[2]+.5)/(1<<15),
+					sp->encode_meth);
+		if (Ce < 0)	/* never happens */
+			Ce = uv_encode(U_NEU, V_NEU, SGILOGENCODE_NODITHER);
+		*luv++ = (uint32)Le << 14 | Ce;
+		luv3 += 3;
+	}
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+void
+LogLuv32toXYZ(uint32 p, float XYZ[3])
+{
+	double	L, u, v, s, x, y;
+					/* decode luminance */
+	L = LogL16toY((int)p >> 16);
+	if (L <= 0.) {
+		XYZ[0] = XYZ[1] = XYZ[2] = 0.;
+		return;
+	}
+					/* decode color */
+	u = 1./UVSCALE * ((p>>8 & 0xff) + .5);
+	v = 1./UVSCALE * ((p & 0xff) + .5);
+	s = 1./(6.*u - 16.*v + 12.);
+	x = 9.*u * s;
+	y = 4.*v * s;
+					/* convert to XYZ */
+	XYZ[0] = (float)(x/y * L);
+	XYZ[1] = (float)L;
+	XYZ[2] = (float)((1.-x-y)/y * L);
+}
+
+#if !LOGLUV_PUBLIC
+static
+#endif
+uint32
+LogLuv32fromXYZ(float XYZ[3], int em)
+{
+	unsigned int	Le, ue, ve;
+	double	u, v, s;
+					/* encode luminance */
+	Le = (unsigned int)LogL16fromY(XYZ[1], em);
+					/* encode color */
+	s = XYZ[0] + 15.*XYZ[1] + 3.*XYZ[2];
+	if (!Le || s <= 0.) {
+		u = U_NEU;
+		v = V_NEU;
+	} else {
+		u = 4.*XYZ[0] / s;
+		v = 9.*XYZ[1] / s;
+	}
+	if (u <= 0.) ue = 0;
+	else ue = itrunc(UVSCALE*u, em);
+	if (ue > 255) ue = 255;
+	if (v <= 0.) ve = 0;
+	else ve = itrunc(UVSCALE*v, em);
+	if (ve > 255) ve = 255;
+					/* combine encodings */
+	return (Le << 16 | ue << 8 | ve);
+}
+
+static void
+Luv32toXYZ(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	float* xyz = (float*) op;
+
+	while (n-- > 0) {
+		LogLuv32toXYZ(*luv++, xyz);
+		xyz += 3;
+	}
+}
+
+static void
+Luv32toLuv48(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	int16* luv3 = (int16*) op;
+
+	while (n-- > 0) {
+		double u, v;
+
+		*luv3++ = (int16)(*luv >> 16);
+		u = 1./UVSCALE * ((*luv>>8 & 0xff) + .5);
+		v = 1./UVSCALE * ((*luv & 0xff) + .5);
+		*luv3++ = (int16)(u * (1L<<15));
+		*luv3++ = (int16)(v * (1L<<15));
+		luv++;
+	}
+}
+
+static void
+Luv32toRGB(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	uint8* rgb = (uint8*) op;
+
+	while (n-- > 0) {
+		float xyz[3];
+
+		LogLuv32toXYZ(*luv++, xyz);
+		XYZtoRGB24(xyz, rgb);
+		rgb += 3;
+	}
+}
+
+static void
+Luv32fromXYZ(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	float* xyz = (float*) op;
+
+	while (n-- > 0) {
+		*luv++ = LogLuv32fromXYZ(xyz, sp->encode_meth);
+		xyz += 3;
+	}
+}
+
+static void
+Luv32fromLuv48(LogLuvState* sp, tidata_t op, int n)
+{
+	uint32* luv = (uint32*) sp->tbuf;
+	int16* luv3 = (int16*) op;
+
+	if (sp->encode_meth == SGILOGENCODE_NODITHER) {
+		while (n-- > 0) {
+			*luv++ = (uint32)luv3[0] << 16 |
+				(luv3[1]*(uint32)(UVSCALE+.5) >> 7 & 0xff00) |
+				(luv3[2]*(uint32)(UVSCALE+.5) >> 15 & 0xff);
+			luv3 += 3;
+		}
+		return;
+	}
+	while (n-- > 0) {
+		*luv++ = (uint32)luv3[0] << 16 |
+	(itrunc(luv3[1]*(UVSCALE/(1<<15)), sp->encode_meth) << 8 & 0xff00) |
+		(itrunc(luv3[2]*(UVSCALE/(1<<15)), sp->encode_meth) & 0xff);
+		luv3 += 3;
+	}
+}
+
+static void
+_logLuvNop(LogLuvState* sp, tidata_t op, int n)
+{
+	(void) sp; (void) op; (void) n;
+}
+
+static int
+LogL16GuessDataFmt(TIFFDirectory *td)
+{
+#define	PACK(s,b,f)	(((b)<<6)|((s)<<3)|(f))
+	switch (PACK(td->td_samplesperpixel, td->td_bitspersample, td->td_sampleformat)) {
+	case PACK(1, 32, SAMPLEFORMAT_IEEEFP):
+		return (SGILOGDATAFMT_FLOAT);
+	case PACK(1, 16, SAMPLEFORMAT_VOID):
+	case PACK(1, 16, SAMPLEFORMAT_INT):
+	case PACK(1, 16, SAMPLEFORMAT_UINT):
+		return (SGILOGDATAFMT_16BIT);
+	case PACK(1,  8, SAMPLEFORMAT_VOID):
+	case PACK(1,  8, SAMPLEFORMAT_UINT):
+		return (SGILOGDATAFMT_8BIT);
+	}
+#undef PACK
+	return (SGILOGDATAFMT_UNKNOWN);
+}
+
+static uint32
+multiply(size_t m1, size_t m2)
+{
+	uint32	bytes = m1 * m2;
+
+	if (m1 && bytes / m1 != m2)
+		bytes = 0;
+
+	return bytes;
+}
+
+static int
+LogL16InitState(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	LogLuvState* sp = DecoderState(tif);
+	static const char module[] = "LogL16InitState";
+
+	assert(sp != NULL);
+	assert(td->td_photometric == PHOTOMETRIC_LOGL);
+
+	/* for some reason, we can't do this in TIFFInitLogL16 */
+	if (sp->user_datafmt == SGILOGDATAFMT_UNKNOWN)
+		sp->user_datafmt = LogL16GuessDataFmt(td);
+	switch (sp->user_datafmt) {
+	case SGILOGDATAFMT_FLOAT:
+		sp->pixel_size = sizeof (float);
+		break;
+	case SGILOGDATAFMT_16BIT:
+		sp->pixel_size = sizeof (int16);
+		break;
+	case SGILOGDATAFMT_8BIT:
+		sp->pixel_size = sizeof (uint8);
+		break;
+	default:
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "No support for converting user data format to LogL");
+		return (0);
+	}
+	sp->tbuflen = multiply(td->td_imagewidth, td->td_rowsperstrip);
+	if (multiply(sp->tbuflen, sizeof (int16)) == 0 ||
+	    (sp->tbuf = (tidata_t*) _TIFFmalloc(sp->tbuflen * sizeof (int16))) == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: No space for SGILog translation buffer",
+		    tif->tif_name);
+		return (0);
+	}
+	return (1);
+}
+
+static int
+LogLuvGuessDataFmt(TIFFDirectory *td)
+{
+	int guess;
+
+	/*
+	 * If the user didn't tell us their datafmt,
+	 * take our best guess from the bitspersample.
+	 */
+#define	PACK(a,b)	(((a)<<3)|(b))
+	switch (PACK(td->td_bitspersample, td->td_sampleformat)) {
+	case PACK(32, SAMPLEFORMAT_IEEEFP):
+		guess = SGILOGDATAFMT_FLOAT;
+		break;
+	case PACK(32, SAMPLEFORMAT_VOID):
+	case PACK(32, SAMPLEFORMAT_UINT):
+	case PACK(32, SAMPLEFORMAT_INT):
+		guess = SGILOGDATAFMT_RAW;
+		break;
+	case PACK(16, SAMPLEFORMAT_VOID):
+	case PACK(16, SAMPLEFORMAT_INT):
+	case PACK(16, SAMPLEFORMAT_UINT):
+		guess = SGILOGDATAFMT_16BIT;
+		break;
+	case PACK( 8, SAMPLEFORMAT_VOID):
+	case PACK( 8, SAMPLEFORMAT_UINT):
+		guess = SGILOGDATAFMT_8BIT;
+		break;
+	default:
+		guess = SGILOGDATAFMT_UNKNOWN;
+		break;
+#undef PACK
+	}
+	/*
+	 * Double-check samples per pixel.
+	 */
+	switch (td->td_samplesperpixel) {
+	case 1:
+		if (guess != SGILOGDATAFMT_RAW)
+			guess = SGILOGDATAFMT_UNKNOWN;
+		break;
+	case 3:
+		if (guess == SGILOGDATAFMT_RAW)
+			guess = SGILOGDATAFMT_UNKNOWN;
+		break;
+	default:
+		guess = SGILOGDATAFMT_UNKNOWN;
+		break;
+	}
+	return (guess);
+}
+
+static int
+LogLuvInitState(TIFF* tif)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+	LogLuvState* sp = DecoderState(tif);
+	static const char module[] = "LogLuvInitState";
+
+	assert(sp != NULL);
+	assert(td->td_photometric == PHOTOMETRIC_LOGLUV);
+
+	/* for some reason, we can't do this in TIFFInitLogLuv */
+	if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+		    "SGILog compression cannot handle non-contiguous data");
+		return (0);
+	}
+	if (sp->user_datafmt == SGILOGDATAFMT_UNKNOWN)
+		sp->user_datafmt = LogLuvGuessDataFmt(td);
+	switch (sp->user_datafmt) {
+	case SGILOGDATAFMT_FLOAT:
+		sp->pixel_size = 3*sizeof (float);
+		break;
+	case SGILOGDATAFMT_16BIT:
+		sp->pixel_size = 3*sizeof (int16);
+		break;
+	case SGILOGDATAFMT_RAW:
+		sp->pixel_size = sizeof (uint32);
+		break;
+	case SGILOGDATAFMT_8BIT:
+		sp->pixel_size = 3*sizeof (uint8);
+		break;
+	default:
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "No support for converting user data format to LogLuv");
+		return (0);
+	}
+	sp->tbuflen = multiply(td->td_imagewidth, td->td_rowsperstrip);
+	if (multiply(sp->tbuflen, sizeof (uint32)) == 0 ||
+	    (sp->tbuf = (tidata_t*) _TIFFmalloc(sp->tbuflen * sizeof (uint32))) == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: No space for SGILog translation buffer",
+		    tif->tif_name);
+		return (0);
+	}
+	return (1);
+}
+
+static int
+LogLuvSetupDecode(TIFF* tif)
+{
+	LogLuvState* sp = DecoderState(tif);
+	TIFFDirectory* td = &tif->tif_dir;
+
+	tif->tif_postdecode = _TIFFNoPostDecode;
+	switch (td->td_photometric) {
+	case PHOTOMETRIC_LOGLUV:
+		if (!LogLuvInitState(tif))
+			break;
+		if (td->td_compression == COMPRESSION_SGILOG24) {
+			tif->tif_decoderow = LogLuvDecode24;
+			switch (sp->user_datafmt) {
+			case SGILOGDATAFMT_FLOAT:
+				sp->tfunc = Luv24toXYZ;
+				break;
+			case SGILOGDATAFMT_16BIT:
+				sp->tfunc = Luv24toLuv48;
+				break;
+			case SGILOGDATAFMT_8BIT:
+				sp->tfunc = Luv24toRGB;
+				break;
+			}
+		} else {
+			tif->tif_decoderow = LogLuvDecode32;
+			switch (sp->user_datafmt) {
+			case SGILOGDATAFMT_FLOAT:
+				sp->tfunc = Luv32toXYZ;
+				break;
+			case SGILOGDATAFMT_16BIT:
+				sp->tfunc = Luv32toLuv48;
+				break;
+			case SGILOGDATAFMT_8BIT:
+				sp->tfunc = Luv32toRGB;
+				break;
+			}
+		}
+		return (1);
+	case PHOTOMETRIC_LOGL:
+		if (!LogL16InitState(tif))
+			break;
+		tif->tif_decoderow = LogL16Decode;
+		switch (sp->user_datafmt) {
+		case SGILOGDATAFMT_FLOAT:
+			sp->tfunc = L16toY;
+			break;
+		case SGILOGDATAFMT_8BIT:
+			sp->tfunc = L16toGry;
+			break;
+		}
+		return (1);
+	default:
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+    "Inappropriate photometric interpretation %d for SGILog compression; %s",
+		    td->td_photometric, "must be either LogLUV or LogL");
+		break;
+	}
+	return (0);
+}
+
+static int
+LogLuvSetupEncode(TIFF* tif)
+{
+	LogLuvState* sp = EncoderState(tif);
+	TIFFDirectory* td = &tif->tif_dir;
+
+	switch (td->td_photometric) {
+	case PHOTOMETRIC_LOGLUV:
+		if (!LogLuvInitState(tif))
+			break;
+		if (td->td_compression == COMPRESSION_SGILOG24) {
+			tif->tif_encoderow = LogLuvEncode24;
+			switch (sp->user_datafmt) {
+			case SGILOGDATAFMT_FLOAT:
+				sp->tfunc = Luv24fromXYZ;
+				break;
+			case SGILOGDATAFMT_16BIT:
+				sp->tfunc = Luv24fromLuv48;
+				break;
+			case SGILOGDATAFMT_RAW:
+				break;
+			default:
+				goto notsupported;
+			}
+		} else {
+			tif->tif_encoderow = LogLuvEncode32;
+			switch (sp->user_datafmt) {
+			case SGILOGDATAFMT_FLOAT:
+				sp->tfunc = Luv32fromXYZ;
+				break;
+			case SGILOGDATAFMT_16BIT:
+				sp->tfunc = Luv32fromLuv48;
+				break;
+			case SGILOGDATAFMT_RAW:
+				break;
+			default:
+				goto notsupported;
+			}
+		}
+		break;
+	case PHOTOMETRIC_LOGL:
+		if (!LogL16InitState(tif))
+			break;
+		tif->tif_encoderow = LogL16Encode;
+		switch (sp->user_datafmt) {
+		case SGILOGDATAFMT_FLOAT:
+			sp->tfunc = L16fromY;
+			break;
+		case SGILOGDATAFMT_16BIT:
+			break;
+		default:
+			goto notsupported;
+		}
+		break;
+	default:
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+    "Inappropriate photometric interpretation %d for SGILog compression; %s",
+    		    td->td_photometric, "must be either LogLUV or LogL");
+		break;
+	}
+	return (1);
+notsupported:
+	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    "SGILog compression supported only for %s, or raw data",
+	    td->td_photometric == PHOTOMETRIC_LOGL ? "Y, L" : "XYZ, Luv");
+	return (0);
+}
+
+static void
+LogLuvClose(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	/*
+	 * For consistency, we always want to write out the same
+	 * bitspersample and sampleformat for our TIFF file,
+	 * regardless of the data format being used by the application.
+	 * Since this routine is called after tags have been set but
+	 * before they have been recorded in the file, we reset them here.
+	 */
+	td->td_samplesperpixel =
+	    (td->td_photometric == PHOTOMETRIC_LOGL) ? 1 : 3;
+	td->td_bitspersample = 16;
+	td->td_sampleformat = SAMPLEFORMAT_INT;
+}
+
+static void
+LogLuvCleanup(TIFF* tif)
+{
+	LogLuvState* sp = (LogLuvState *)tif->tif_data;
+
+	assert(sp != 0);
+
+	tif->tif_tagmethods.vgetfield = sp->vgetparent;
+	tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+	if (sp->tbuf)
+		_TIFFfree(sp->tbuf);
+	_TIFFfree(sp);
+	tif->tif_data = NULL;
+
+	_TIFFSetDefaultCompressionState(tif);
+}
+
+static int
+LogLuvVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	LogLuvState* sp = DecoderState(tif);
+	int bps, fmt;
+
+	switch (tag) {
+	case TIFFTAG_SGILOGDATAFMT:
+		sp->user_datafmt = va_arg(ap, int);
+		/*
+		 * Tweak the TIFF header so that the rest of libtiff knows what
+		 * size of data will be passed between app and library, and
+		 * assume that the app knows what it is doing and is not
+		 * confused by these header manipulations...
+		 */
+		switch (sp->user_datafmt) {
+		case SGILOGDATAFMT_FLOAT:
+			bps = 32, fmt = SAMPLEFORMAT_IEEEFP;
+			break;
+		case SGILOGDATAFMT_16BIT:
+			bps = 16, fmt = SAMPLEFORMAT_INT;
+			break;
+		case SGILOGDATAFMT_RAW:
+			bps = 32, fmt = SAMPLEFORMAT_UINT;
+			TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 1);
+			break;
+		case SGILOGDATAFMT_8BIT:
+			bps = 8, fmt = SAMPLEFORMAT_UINT;
+			break;
+		default:
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "Unknown data format %d for LogLuv compression",
+			    sp->user_datafmt);
+			return (0);
+		}
+		TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps);
+		TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, fmt);
+		/*
+		 * Must recalculate sizes should bits/sample change.
+		 */
+		tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
+		tif->tif_scanlinesize = TIFFScanlineSize(tif);
+		return (1);
+	case TIFFTAG_SGILOGENCODE:
+		sp->encode_meth = va_arg(ap, int);
+		if (sp->encode_meth != SGILOGENCODE_NODITHER &&
+				sp->encode_meth != SGILOGENCODE_RANDITHER) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+				"Unknown encoding %d for LogLuv compression",
+				sp->encode_meth);
+			return (0);
+		}
+		return (1);
+	default:
+		return (*sp->vsetparent)(tif, tag, ap);
+	}
+}
+
+static int
+LogLuvVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	LogLuvState *sp = (LogLuvState *)tif->tif_data;
+
+	switch (tag) {
+	case TIFFTAG_SGILOGDATAFMT:
+		*va_arg(ap, int*) = sp->user_datafmt;
+		return (1);
+	default:
+		return (*sp->vgetparent)(tif, tag, ap);
+	}
+}
+
+static const TIFFFieldInfo LogLuvFieldInfo[] = {
+    { TIFFTAG_SGILOGDATAFMT,	  0, 0,	TIFF_SHORT,	FIELD_PSEUDO,
+      TRUE,	FALSE,	"SGILogDataFmt"},
+    { TIFFTAG_SGILOGENCODE,	  0, 0, TIFF_SHORT,	FIELD_PSEUDO,
+      TRUE,	FALSE,	"SGILogEncode"}
+};
+
+int
+TIFFInitSGILog(TIFF* tif, int scheme)
+{
+	static const char module[] = "TIFFInitSGILog";
+	LogLuvState* sp;
+
+	assert(scheme == COMPRESSION_SGILOG24 || scheme == COMPRESSION_SGILOG);
+
+	/*
+	 * Allocate state block so tag methods have storage to record values.
+	 */
+	tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (LogLuvState));
+	if (tif->tif_data == NULL)
+		goto bad;
+	sp = (LogLuvState*) tif->tif_data;
+	_TIFFmemset((tdata_t)sp, 0, sizeof (*sp));
+	sp->user_datafmt = SGILOGDATAFMT_UNKNOWN;
+	sp->encode_meth = (scheme == COMPRESSION_SGILOG24) ?
+				SGILOGENCODE_RANDITHER : SGILOGENCODE_NODITHER;
+	sp->tfunc = _logLuvNop;
+
+	/*
+	 * Install codec methods.
+	 * NB: tif_decoderow & tif_encoderow are filled
+	 *     in at setup time.
+	 */
+	tif->tif_setupdecode = LogLuvSetupDecode;
+	tif->tif_decodestrip = LogLuvDecodeStrip;
+	tif->tif_decodetile = LogLuvDecodeTile;
+	tif->tif_setupencode = LogLuvSetupEncode;
+	tif->tif_encodestrip = LogLuvEncodeStrip;
+	tif->tif_encodetile = LogLuvEncodeTile;
+	tif->tif_close = LogLuvClose;
+	tif->tif_cleanup = LogLuvCleanup;
+
+	/* override SetField so we can handle our private pseudo-tag */
+	_TIFFMergeFieldInfo(tif, LogLuvFieldInfo,
+			    TIFFArrayCount(LogLuvFieldInfo));
+	sp->vgetparent = tif->tif_tagmethods.vgetfield;
+	tif->tif_tagmethods.vgetfield = LogLuvVGetField;   /* hook for codec tags */
+	sp->vsetparent = tif->tif_tagmethods.vsetfield;
+	tif->tif_tagmethods.vsetfield = LogLuvVSetField;   /* hook for codec tags */
+
+	return (1);
+bad:
+	TIFFErrorExt(tif->tif_clientdata, module,
+		     "%s: No space for LogLuv state block", tif->tif_name);
+	return (0);
+}
+#endif /* LOGLUV_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_lzw.c b/src/libtiff/tif_lzw.c
new file mode 100644
index 0000000..79d4091
--- /dev/null
+++ b/src/libtiff/tif_lzw.c
@@ -0,0 +1,1084 @@
+/* $Id: tif_lzw.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef LZW_SUPPORT
+/*
+ * TIFF Library.
+ * Rev 5.0 Lempel-Ziv & Welch Compression Support
+ *
+ * This code is derived from the compress program whose code is
+ * derived from software contributed to Berkeley by James A. Woods,
+ * derived from original work by Spencer Thomas and Joseph Orost.
+ *
+ * The original Berkeley copyright notice appears below in its entirety.
+ */
+#include "tif_predict.h"
+
+#include <stdio.h>
+
+/*
+ * NB: The 5.0 spec describes a different algorithm than Aldus
+ *     implements.  Specifically, Aldus does code length transitions
+ *     one code earlier than should be done (for real LZW).
+ *     Earlier versions of this library implemented the correct
+ *     LZW algorithm, but emitted codes in a bit order opposite
+ *     to the TIFF spec.  Thus, to maintain compatibility w/ Aldus
+ *     we interpret MSB-LSB ordered codes to be images written w/
+ *     old versions of this library, but otherwise adhere to the
+ *     Aldus "off by one" algorithm.
+ *
+ * Future revisions to the TIFF spec are expected to "clarify this issue".
+ */
+#define	LZW_COMPAT		/* include backwards compatibility code */
+/*
+ * Each strip of data is supposed to be terminated by a CODE_EOI.
+ * If the following #define is included, the decoder will also
+ * check for end-of-strip w/o seeing this code.  This makes the
+ * library more robust, but also slower.
+ */
+#define	LZW_CHECKEOS		/* include checks for strips w/o EOI code */
+
+#define MAXCODE(n)	((1L<<(n))-1)
+/*
+ * The TIFF spec specifies that encoded bit
+ * strings range from 9 to 12 bits.
+ */
+#define	BITS_MIN	9		/* start with 9 bits */
+#define	BITS_MAX	12		/* max of 12 bit strings */
+/* predefined codes */
+#define	CODE_CLEAR	256		/* code to clear string table */
+#define	CODE_EOI	257		/* end-of-information code */
+#define CODE_FIRST	258		/* first free code entry */
+#define	CODE_MAX	MAXCODE(BITS_MAX)
+#define	HSIZE		9001L		/* 91% occupancy */
+#define	HSHIFT		(13-8)
+#ifdef LZW_COMPAT
+/* NB: +1024 is for compatibility with old files */
+#define	CSIZE		(MAXCODE(BITS_MAX)+1024L)
+#else
+#define	CSIZE		(MAXCODE(BITS_MAX)+1L)
+#endif
+
+/*
+ * State block for each open TIFF file using LZW
+ * compression/decompression.  Note that the predictor
+ * state block must be first in this data structure.
+ */
+typedef	struct {
+	TIFFPredictorState predict;	/* predictor super class */
+
+	unsigned short	nbits;		/* # of bits/code */
+	unsigned short	maxcode;	/* maximum code for lzw_nbits */
+	unsigned short	free_ent;	/* next free entry in hash table */
+	long		nextdata;	/* next bits of i/o */
+	long		nextbits;	/* # of valid bits in lzw_nextdata */
+
+        int             rw_mode;        /* preserve rw_mode from init */
+} LZWBaseState;
+
+#define	lzw_nbits	base.nbits
+#define	lzw_maxcode	base.maxcode
+#define	lzw_free_ent	base.free_ent
+#define	lzw_nextdata	base.nextdata
+#define	lzw_nextbits	base.nextbits
+
+/*
+ * Encoding-specific state.
+ */
+typedef uint16 hcode_t;			/* codes fit in 16 bits */
+typedef struct {
+	long	hash;
+	hcode_t	code;
+} hash_t;
+
+/*
+ * Decoding-specific state.
+ */
+typedef struct code_ent {
+	struct code_ent *next;
+	unsigned short	length;		/* string len, including this token */
+	unsigned char	value;		/* data value */
+	unsigned char	firstchar;	/* first token of string */
+} code_t;
+
+typedef	int (*decodeFunc)(TIFF*, tidata_t, tsize_t, tsample_t);
+
+typedef struct {
+	LZWBaseState base;
+
+	/* Decoding specific data */
+	long	dec_nbitsmask;		/* lzw_nbits 1 bits, right adjusted */
+	long	dec_restart;		/* restart count */
+#ifdef LZW_CHECKEOS
+	long	dec_bitsleft;		/* available bits in raw data */
+#endif
+	decodeFunc dec_decode;		/* regular or backwards compatible */
+	code_t*	dec_codep;		/* current recognized code */
+	code_t*	dec_oldcodep;		/* previously recognized code */
+	code_t*	dec_free_entp;		/* next free entry */
+	code_t*	dec_maxcodep;		/* max available entry */
+	code_t*	dec_codetab;		/* kept separate for small machines */
+
+	/* Encoding specific data */
+	int	enc_oldcode;		/* last code encountered */
+	long	enc_checkpoint;		/* point at which to clear table */
+#define CHECK_GAP	10000		/* enc_ratio check interval */
+	long	enc_ratio;		/* current compression ratio */
+	long	enc_incount;		/* (input) data bytes encoded */
+	long	enc_outcount;		/* encoded (output) bytes */
+	tidata_t enc_rawlimit;		/* bound on tif_rawdata buffer */
+	hash_t*	enc_hashtab;		/* kept separate for small machines */
+} LZWCodecState;
+
+#define	LZWState(tif)		((LZWBaseState*) (tif)->tif_data)
+#define	DecoderState(tif)	((LZWCodecState*) LZWState(tif))
+#define	EncoderState(tif)	((LZWCodecState*) LZWState(tif))
+
+static	int LZWDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+#ifdef LZW_COMPAT
+static	int LZWDecodeCompat(TIFF*, tidata_t, tsize_t, tsample_t);
+#endif
+static  void cl_hash(LZWCodecState*);
+
+/*
+ * LZW Decoder.
+ */
+
+#ifdef LZW_CHECKEOS
+/*
+ * This check shouldn't be necessary because each
+ * strip is suppose to be terminated with CODE_EOI.
+ */
+#define	NextCode(_tif, _sp, _bp, _code, _get) {				\
+	if ((_sp)->dec_bitsleft < nbits) {				\
+		TIFFWarningExt(_tif->tif_clientdata, _tif->tif_name,				\
+		    "LZWDecode: Strip %d not terminated with EOI code", \
+		    _tif->tif_curstrip);				\
+		_code = CODE_EOI;					\
+	} else {							\
+		_get(_sp,_bp,_code);					\
+		(_sp)->dec_bitsleft -= nbits;				\
+	}								\
+}
+#else
+#define	NextCode(tif, sp, bp, code, get) get(sp, bp, code)
+#endif
+
+static int
+LZWSetupDecode(TIFF* tif)
+{
+	LZWCodecState* sp = DecoderState(tif);
+	static const char module[] = " LZWSetupDecode";
+	int code;
+
+        if( sp == NULL )
+        {
+            /*
+             * Allocate state block so tag methods have storage to record 
+			 * values.
+             */
+            tif->tif_data = (tidata_t) _TIFFmalloc(sizeof(LZWCodecState));
+            if (tif->tif_data == NULL)
+            {
+				TIFFErrorExt(tif->tif_clientdata, "LZWPreDecode", "No space for LZW state block");
+                return (0);
+            }
+
+            DecoderState(tif)->dec_codetab = NULL;
+            DecoderState(tif)->dec_decode = NULL;
+            
+            /*
+             * Setup predictor setup.
+             */
+            (void) TIFFPredictorInit(tif);
+
+            sp = DecoderState(tif);
+        }
+            
+	assert(sp != NULL);
+
+	if (sp->dec_codetab == NULL) {
+		sp->dec_codetab = (code_t*)_TIFFmalloc(CSIZE*sizeof (code_t));
+		if (sp->dec_codetab == NULL) {
+			TIFFErrorExt(tif->tif_clientdata, module, "No space for LZW code table");
+			return (0);
+		}
+		/*
+		 * Pre-load the table.
+		 */
+                code = 255;
+                do {
+                    sp->dec_codetab[code].value = code;
+                    sp->dec_codetab[code].firstchar = code;
+                    sp->dec_codetab[code].length = 1;
+                    sp->dec_codetab[code].next = NULL;
+                } while (code--);
+	}
+	return (1);
+}
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+LZWPreDecode(TIFF* tif, tsample_t s)
+{
+	LZWCodecState *sp = DecoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	/*
+	 * Check for old bit-reversed codes.
+	 */
+	if (tif->tif_rawdata[0] == 0 && (tif->tif_rawdata[1] & 0x1)) {
+#ifdef LZW_COMPAT
+		if (!sp->dec_decode) {
+			TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+			    "Old-style LZW codes, convert file");
+			/*
+			 * Override default decoding methods with
+			 * ones that deal with the old coding.
+			 * Otherwise the predictor versions set
+			 * above will call the compatibility routines
+			 * through the dec_decode method.
+			 */
+			tif->tif_decoderow = LZWDecodeCompat;
+			tif->tif_decodestrip = LZWDecodeCompat;
+			tif->tif_decodetile = LZWDecodeCompat;
+			/*
+			 * If doing horizontal differencing, must
+			 * re-setup the predictor logic since we
+			 * switched the basic decoder methods...
+			 */
+			(*tif->tif_setupdecode)(tif);
+			sp->dec_decode = LZWDecodeCompat;
+		}
+		sp->lzw_maxcode = MAXCODE(BITS_MIN);
+#else /* !LZW_COMPAT */
+		if (!sp->dec_decode) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "Old-style LZW codes not supported");
+			sp->dec_decode = LZWDecode;
+		}
+		return (0);
+#endif/* !LZW_COMPAT */
+	} else {
+		sp->lzw_maxcode = MAXCODE(BITS_MIN)-1;
+		sp->dec_decode = LZWDecode;
+	}
+	sp->lzw_nbits = BITS_MIN;
+	sp->lzw_nextbits = 0;
+	sp->lzw_nextdata = 0;
+
+	sp->dec_restart = 0;
+	sp->dec_nbitsmask = MAXCODE(BITS_MIN);
+#ifdef LZW_CHECKEOS
+	sp->dec_bitsleft = tif->tif_rawcc << 3;
+#endif
+	sp->dec_free_entp = sp->dec_codetab + CODE_FIRST;
+	/*
+	 * Zero entries that are not yet filled in.  We do
+	 * this to guard against bogus input data that causes
+	 * us to index into undefined entries.  If you can
+	 * come up with a way to safely bounds-check input codes
+	 * while decoding then you can remove this operation.
+	 */
+	_TIFFmemset(sp->dec_free_entp, 0, (CSIZE-CODE_FIRST)*sizeof (code_t));
+	sp->dec_oldcodep = &sp->dec_codetab[-1];
+	sp->dec_maxcodep = &sp->dec_codetab[sp->dec_nbitsmask-1];
+	return (1);
+}
+
+/*
+ * Decode a "hunk of data".
+ */
+#define	GetNextCode(sp, bp, code) {				\
+	nextdata = (nextdata<<8) | *(bp)++;			\
+	nextbits += 8;						\
+	if (nextbits < nbits) {					\
+		nextdata = (nextdata<<8) | *(bp)++;		\
+		nextbits += 8;					\
+	}							\
+	code = (hcode_t)((nextdata >> (nextbits-nbits)) & nbitsmask);	\
+	nextbits -= nbits;					\
+}
+
+static void
+codeLoop(TIFF* tif)
+{
+	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    "LZWDecode: Bogus encoding, loop in the code table; scanline %d",
+	    tif->tif_row);
+}
+
+static int
+LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
+{
+	LZWCodecState *sp = DecoderState(tif);
+	char *op = (char*) op0;
+	long occ = (long) occ0;
+	char *tp;
+	unsigned char *bp;
+	hcode_t code;
+	int len;
+	long nbits, nextbits, nextdata, nbitsmask;
+	code_t *codep, *free_entp, *maxcodep, *oldcodep;
+
+	(void) s;
+	assert(sp != NULL);
+	/*
+	 * Restart interrupted output operation.
+	 */
+	if (sp->dec_restart) {
+		long residue;
+
+		codep = sp->dec_codep;
+		residue = codep->length - sp->dec_restart;
+		if (residue > occ) {
+			/*
+			 * Residue from previous decode is sufficient
+			 * to satisfy decode request.  Skip to the
+			 * start of the decoded string, place decoded
+			 * values in the output buffer, and return.
+			 */
+			sp->dec_restart += occ;
+			do {
+				codep = codep->next;
+			} while (--residue > occ && codep);
+			if (codep) {
+				tp = op + occ;
+				do {
+					*--tp = codep->value;
+					codep = codep->next;
+				} while (--occ && codep);
+			}
+			return (1);
+		}
+		/*
+		 * Residue satisfies only part of the decode request.
+		 */
+		op += residue, occ -= residue;
+		tp = op;
+		do {
+			int t;
+			--tp;
+			t = codep->value;
+			codep = codep->next;
+			*tp = t;
+		} while (--residue && codep);
+		sp->dec_restart = 0;
+	}
+
+	bp = (unsigned char *)tif->tif_rawcp;
+	nbits = sp->lzw_nbits;
+	nextdata = sp->lzw_nextdata;
+	nextbits = sp->lzw_nextbits;
+	nbitsmask = sp->dec_nbitsmask;
+	oldcodep = sp->dec_oldcodep;
+	free_entp = sp->dec_free_entp;
+	maxcodep = sp->dec_maxcodep;
+
+	while (occ > 0) {
+		NextCode(tif, sp, bp, code, GetNextCode);
+		if (code == CODE_EOI)
+			break;
+		if (code == CODE_CLEAR) {
+			free_entp = sp->dec_codetab + CODE_FIRST;
+			nbits = BITS_MIN;
+			nbitsmask = MAXCODE(BITS_MIN);
+			maxcodep = sp->dec_codetab + nbitsmask-1;
+			NextCode(tif, sp, bp, code, GetNextCode);
+			if (code == CODE_EOI)
+				break;
+			*op++ = (char)code, occ--;
+			oldcodep = sp->dec_codetab + code;
+			continue;
+		}
+		codep = sp->dec_codetab + code;
+
+		/*
+	 	 * Add the new entry to the code table.
+	 	 */
+		if (free_entp < &sp->dec_codetab[0] ||
+			free_entp >= &sp->dec_codetab[CSIZE]) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			"LZWDecode: Corrupted LZW table at scanline %d",
+			tif->tif_row);
+			return (0);
+		}
+
+		free_entp->next = oldcodep;
+		if (free_entp->next < &sp->dec_codetab[0] ||
+			free_entp->next >= &sp->dec_codetab[CSIZE]) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			"LZWDecode: Corrupted LZW table at scanline %d",
+			tif->tif_row);
+			return (0);
+		}
+		free_entp->firstchar = free_entp->next->firstchar;
+		free_entp->length = free_entp->next->length+1;
+		free_entp->value = (codep < free_entp) ?
+		    codep->firstchar : free_entp->firstchar;
+		if (++free_entp > maxcodep) {
+			if (++nbits > BITS_MAX)		/* should not happen */
+				nbits = BITS_MAX;
+			nbitsmask = MAXCODE(nbits);
+			maxcodep = sp->dec_codetab + nbitsmask-1;
+		}
+		oldcodep = codep;
+		if (code >= 256) {
+			/*
+		 	 * Code maps to a string, copy string
+			 * value to output (written in reverse).
+		 	 */
+			if(codep->length == 0) {
+				TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    		    "LZWDecode: Wrong length of decoded string: "
+			    "data probably corrupted at scanline %d",
+			    tif->tif_row);	
+			    return (0);
+			}
+			if (codep->length > occ) {
+				/*
+				 * String is too long for decode buffer,
+				 * locate portion that will fit, copy to
+				 * the decode buffer, and setup restart
+				 * logic for the next decoding call.
+				 */
+				sp->dec_codep = codep;
+				do {
+					codep = codep->next;
+				} while (codep && codep->length > occ);
+				if (codep) {
+					sp->dec_restart = occ;
+					tp = op + occ;
+					do  {
+						*--tp = codep->value;
+						codep = codep->next;
+					}  while (--occ && codep);
+					if (codep)
+						codeLoop(tif);
+				}
+				break;
+			}
+			len = codep->length;
+			tp = op + len;
+			do {
+				int t;
+				--tp;
+				t = codep->value;
+				codep = codep->next;
+				*tp = t;
+			} while (codep && tp > op);
+			if (codep) {
+			    codeLoop(tif);
+			    break;
+			}
+			op += len, occ -= len;
+		} else
+			*op++ = (char)code, occ--;
+	}
+
+	tif->tif_rawcp = (tidata_t) bp;
+	sp->lzw_nbits = (unsigned short) nbits;
+	sp->lzw_nextdata = nextdata;
+	sp->lzw_nextbits = nextbits;
+	sp->dec_nbitsmask = nbitsmask;
+	sp->dec_oldcodep = oldcodep;
+	sp->dec_free_entp = free_entp;
+	sp->dec_maxcodep = maxcodep;
+
+	if (occ > 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		"LZWDecode: Not enough data at scanline %d (short %d bytes)",
+		    tif->tif_row, occ);
+		return (0);
+	}
+	return (1);
+}
+
+#ifdef LZW_COMPAT
+/*
+ * Decode a "hunk of data" for old images.
+ */
+#define	GetNextCodeCompat(sp, bp, code) {			\
+	nextdata |= (unsigned long) *(bp)++ << nextbits;	\
+	nextbits += 8;						\
+	if (nextbits < nbits) {					\
+		nextdata |= (unsigned long) *(bp)++ << nextbits;\
+		nextbits += 8;					\
+	}							\
+	code = (hcode_t)(nextdata & nbitsmask);			\
+	nextdata >>= nbits;					\
+	nextbits -= nbits;					\
+}
+
+static int
+LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
+{
+	LZWCodecState *sp = DecoderState(tif);
+	char *op = (char*) op0;
+	long occ = (long) occ0;
+	char *tp;
+	unsigned char *bp;
+	int code, nbits;
+	long nextbits, nextdata, nbitsmask;
+	code_t *codep, *free_entp, *maxcodep, *oldcodep;
+
+	(void) s;
+	assert(sp != NULL);
+	/*
+	 * Restart interrupted output operation.
+	 */
+	if (sp->dec_restart) {
+		long residue;
+
+		codep = sp->dec_codep;
+		residue = codep->length - sp->dec_restart;
+		if (residue > occ) {
+			/*
+			 * Residue from previous decode is sufficient
+			 * to satisfy decode request.  Skip to the
+			 * start of the decoded string, place decoded
+			 * values in the output buffer, and return.
+			 */
+			sp->dec_restart += occ;
+			do {
+				codep = codep->next;
+			} while (--residue > occ);
+			tp = op + occ;
+			do {
+				*--tp = codep->value;
+				codep = codep->next;
+			} while (--occ);
+			return (1);
+		}
+		/*
+		 * Residue satisfies only part of the decode request.
+		 */
+		op += residue, occ -= residue;
+		tp = op;
+		do {
+			*--tp = codep->value;
+			codep = codep->next;
+		} while (--residue);
+		sp->dec_restart = 0;
+	}
+
+	bp = (unsigned char *)tif->tif_rawcp;
+	nbits = sp->lzw_nbits;
+	nextdata = sp->lzw_nextdata;
+	nextbits = sp->lzw_nextbits;
+	nbitsmask = sp->dec_nbitsmask;
+	oldcodep = sp->dec_oldcodep;
+	free_entp = sp->dec_free_entp;
+	maxcodep = sp->dec_maxcodep;
+
+	while (occ > 0) {
+		NextCode(tif, sp, bp, code, GetNextCodeCompat);
+		if (code == CODE_EOI)
+			break;
+		if (code == CODE_CLEAR) {
+			free_entp = sp->dec_codetab + CODE_FIRST;
+			nbits = BITS_MIN;
+			nbitsmask = MAXCODE(BITS_MIN);
+			maxcodep = sp->dec_codetab + nbitsmask;
+			NextCode(tif, sp, bp, code, GetNextCodeCompat);
+			if (code == CODE_EOI)
+				break;
+			*op++ = code, occ--;
+			oldcodep = sp->dec_codetab + code;
+			continue;
+		}
+		codep = sp->dec_codetab + code;
+
+		/*
+	 	 * Add the new entry to the code table.
+	 	 */
+		if (free_entp < &sp->dec_codetab[0] ||
+			free_entp >= &sp->dec_codetab[CSIZE]) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			"LZWDecodeCompat: Corrupted LZW table at scanline %d",
+			tif->tif_row);
+			return (0);
+		}
+
+		free_entp->next = oldcodep;
+		if (free_entp->next < &sp->dec_codetab[0] ||
+			free_entp->next >= &sp->dec_codetab[CSIZE]) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			"LZWDecodeCompat: Corrupted LZW table at scanline %d",
+			tif->tif_row);
+			return (0);
+		}
+		free_entp->firstchar = free_entp->next->firstchar;
+		free_entp->length = free_entp->next->length+1;
+		free_entp->value = (codep < free_entp) ?
+		    codep->firstchar : free_entp->firstchar;
+		if (++free_entp > maxcodep) {
+			if (++nbits > BITS_MAX)		/* should not happen */
+				nbits = BITS_MAX;
+			nbitsmask = MAXCODE(nbits);
+			maxcodep = sp->dec_codetab + nbitsmask;
+		}
+		oldcodep = codep;
+		if (code >= 256) {
+			/*
+		 	 * Code maps to a string, copy string
+			 * value to output (written in reverse).
+		 	 */
+			if(codep->length == 0) {
+				TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    		    "LZWDecodeCompat: Wrong length of decoded "
+			    "string: data probably corrupted at scanline %d",
+			    tif->tif_row);	
+			    return (0);
+			}
+			if (codep->length > occ) {
+				/*
+				 * String is too long for decode buffer,
+				 * locate portion that will fit, copy to
+				 * the decode buffer, and setup restart
+				 * logic for the next decoding call.
+				 */
+				sp->dec_codep = codep;
+				do {
+					codep = codep->next;
+				} while (codep->length > occ);
+				sp->dec_restart = occ;
+				tp = op + occ;
+				do  {
+					*--tp = codep->value;
+					codep = codep->next;
+				}  while (--occ);
+				break;
+			}
+			op += codep->length, occ -= codep->length;
+			tp = op;
+			do {
+				*--tp = codep->value;
+			} while( (codep = codep->next) != NULL);
+		} else
+			*op++ = code, occ--;
+	}
+
+	tif->tif_rawcp = (tidata_t) bp;
+	sp->lzw_nbits = nbits;
+	sp->lzw_nextdata = nextdata;
+	sp->lzw_nextbits = nextbits;
+	sp->dec_nbitsmask = nbitsmask;
+	sp->dec_oldcodep = oldcodep;
+	sp->dec_free_entp = free_entp;
+	sp->dec_maxcodep = maxcodep;
+
+	if (occ > 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+	    "LZWDecodeCompat: Not enough data at scanline %d (short %d bytes)",
+		    tif->tif_row, occ);
+		return (0);
+	}
+	return (1);
+}
+#endif /* LZW_COMPAT */
+
+/*
+ * LZW Encoding.
+ */
+
+static int
+LZWSetupEncode(TIFF* tif)
+{
+	LZWCodecState* sp = EncoderState(tif);
+	static const char module[] = "LZWSetupEncode";
+
+	assert(sp != NULL);
+	sp->enc_hashtab = (hash_t*) _TIFFmalloc(HSIZE*sizeof (hash_t));
+	if (sp->enc_hashtab == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, module, "No space for LZW hash table");
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+LZWPreEncode(TIFF* tif, tsample_t s)
+{
+	LZWCodecState *sp = EncoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	sp->lzw_nbits = BITS_MIN;
+	sp->lzw_maxcode = MAXCODE(BITS_MIN);
+	sp->lzw_free_ent = CODE_FIRST;
+	sp->lzw_nextbits = 0;
+	sp->lzw_nextdata = 0;
+	sp->enc_checkpoint = CHECK_GAP;
+	sp->enc_ratio = 0;
+	sp->enc_incount = 0;
+	sp->enc_outcount = 0;
+	/*
+	 * The 4 here insures there is space for 2 max-sized
+	 * codes in LZWEncode and LZWPostDecode.
+	 */
+	sp->enc_rawlimit = tif->tif_rawdata + tif->tif_rawdatasize-1 - 4;
+	cl_hash(sp);		/* clear hash table */
+	sp->enc_oldcode = (hcode_t) -1;	/* generates CODE_CLEAR in LZWEncode */
+	return (1);
+}
+
+#define	CALCRATIO(sp, rat) {					\
+	if (incount > 0x007fffff) { /* NB: shift will overflow */\
+		rat = outcount >> 8;				\
+		rat = (rat == 0 ? 0x7fffffff : incount/rat);	\
+	} else							\
+		rat = (incount<<8) / outcount;			\
+}
+#define	PutNextCode(op, c) {					\
+	nextdata = (nextdata << nbits) | c;			\
+	nextbits += nbits;					\
+	*op++ = (unsigned char)(nextdata >> (nextbits-8));		\
+	nextbits -= 8;						\
+	if (nextbits >= 8) {					\
+		*op++ = (unsigned char)(nextdata >> (nextbits-8));	\
+		nextbits -= 8;					\
+	}							\
+	outcount += nbits;					\
+}
+
+/*
+ * Encode a chunk of pixels.
+ *
+ * Uses an open addressing double hashing (no chaining) on the 
+ * prefix code/next character combination.  We do a variant of
+ * Knuth's algorithm D (vol. 3, sec. 6.4) along with G. Knott's
+ * relatively-prime secondary probe.  Here, the modular division
+ * first probe is gives way to a faster exclusive-or manipulation. 
+ * Also do block compression with an adaptive reset, whereby the
+ * code table is cleared when the compression ratio decreases,
+ * but after the table fills.  The variable-length output codes
+ * are re-sized at this point, and a CODE_CLEAR is generated
+ * for the decoder. 
+ */
+static int
+LZWEncode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	register LZWCodecState *sp = EncoderState(tif);
+	register long fcode;
+	register hash_t *hp;
+	register int h, c;
+	hcode_t ent;
+	long disp;
+	long incount, outcount, checkpoint;
+	long nextdata, nextbits;
+	int free_ent, maxcode, nbits;
+	tidata_t op, limit;
+
+	(void) s;
+	if (sp == NULL)
+		return (0);
+	/*
+	 * Load local state.
+	 */
+	incount = sp->enc_incount;
+	outcount = sp->enc_outcount;
+	checkpoint = sp->enc_checkpoint;
+	nextdata = sp->lzw_nextdata;
+	nextbits = sp->lzw_nextbits;
+	free_ent = sp->lzw_free_ent;
+	maxcode = sp->lzw_maxcode;
+	nbits = sp->lzw_nbits;
+	op = tif->tif_rawcp;
+	limit = sp->enc_rawlimit;
+	ent = sp->enc_oldcode;
+
+	if (ent == (hcode_t) -1 && cc > 0) {
+		/*
+		 * NB: This is safe because it can only happen
+		 *     at the start of a strip where we know there
+		 *     is space in the data buffer.
+		 */
+		PutNextCode(op, CODE_CLEAR);
+		ent = *bp++; cc--; incount++;
+	}
+	while (cc > 0) {
+		c = *bp++; cc--; incount++;
+		fcode = ((long)c << BITS_MAX) + ent;
+		h = (c << HSHIFT) ^ ent;	/* xor hashing */
+#ifdef _WINDOWS
+		/*
+		 * Check hash index for an overflow.
+		 */
+		if (h >= HSIZE)
+			h -= HSIZE;
+#endif
+		hp = &sp->enc_hashtab[h];
+		if (hp->hash == fcode) {
+			ent = hp->code;
+			continue;
+		}
+		if (hp->hash >= 0) {
+			/*
+			 * Primary hash failed, check secondary hash.
+			 */
+			disp = HSIZE - h;
+			if (h == 0)
+				disp = 1;
+			do {
+				/*
+				 * Avoid pointer arithmetic 'cuz of
+				 * wraparound problems with segments.
+				 */
+				if ((h -= disp) < 0)
+					h += HSIZE;
+				hp = &sp->enc_hashtab[h];
+				if (hp->hash == fcode) {
+					ent = hp->code;
+					goto hit;
+				}
+			} while (hp->hash >= 0);
+		}
+		/*
+		 * New entry, emit code and add to table.
+		 */
+		/*
+		 * Verify there is space in the buffer for the code
+		 * and any potential Clear code that might be emitted
+		 * below.  The value of limit is setup so that there
+		 * are at least 4 bytes free--room for 2 codes.
+		 */
+		if (op > limit) {
+			tif->tif_rawcc = (tsize_t)(op - tif->tif_rawdata);
+			TIFFFlushData1(tif);
+			op = tif->tif_rawdata;
+		}
+		PutNextCode(op, ent);
+		ent = c;
+		hp->code = free_ent++;
+		hp->hash = fcode;
+		if (free_ent == CODE_MAX-1) {
+			/* table is full, emit clear code and reset */
+			cl_hash(sp);
+			sp->enc_ratio = 0;
+			incount = 0;
+			outcount = 0;
+			free_ent = CODE_FIRST;
+			PutNextCode(op, CODE_CLEAR);
+			nbits = BITS_MIN;
+			maxcode = MAXCODE(BITS_MIN);
+		} else {
+			/*
+			 * If the next entry is going to be too big for
+			 * the code size, then increase it, if possible.
+			 */
+			if (free_ent > maxcode) {
+				nbits++;
+				assert(nbits <= BITS_MAX);
+				maxcode = (int) MAXCODE(nbits);
+			} else if (incount >= checkpoint) {
+				long rat;
+				/*
+				 * Check compression ratio and, if things seem
+				 * to be slipping, clear the hash table and
+				 * reset state.  The compression ratio is a
+				 * 24+8-bit fractional number.
+				 */
+				checkpoint = incount+CHECK_GAP;
+				CALCRATIO(sp, rat);
+				if (rat <= sp->enc_ratio) {
+					cl_hash(sp);
+					sp->enc_ratio = 0;
+					incount = 0;
+					outcount = 0;
+					free_ent = CODE_FIRST;
+					PutNextCode(op, CODE_CLEAR);
+					nbits = BITS_MIN;
+					maxcode = MAXCODE(BITS_MIN);
+				} else
+					sp->enc_ratio = rat;
+			}
+		}
+	hit:
+		;
+	}
+
+	/*
+	 * Restore global state.
+	 */
+	sp->enc_incount = incount;
+	sp->enc_outcount = outcount;
+	sp->enc_checkpoint = checkpoint;
+	sp->enc_oldcode = ent;
+	sp->lzw_nextdata = nextdata;
+	sp->lzw_nextbits = nextbits;
+	sp->lzw_free_ent = free_ent;
+	sp->lzw_maxcode = maxcode;
+	sp->lzw_nbits = nbits;
+	tif->tif_rawcp = op;
+	return (1);
+}
+
+/*
+ * Finish off an encoded strip by flushing the last
+ * string and tacking on an End Of Information code.
+ */
+static int
+LZWPostEncode(TIFF* tif)
+{
+	register LZWCodecState *sp = EncoderState(tif);
+	tidata_t op = tif->tif_rawcp;
+	long nextbits = sp->lzw_nextbits;
+	long nextdata = sp->lzw_nextdata;
+	long outcount = sp->enc_outcount;
+	int nbits = sp->lzw_nbits;
+
+	if (op > sp->enc_rawlimit) {
+		tif->tif_rawcc = (tsize_t)(op - tif->tif_rawdata);
+		TIFFFlushData1(tif);
+		op = tif->tif_rawdata;
+	}
+	if (sp->enc_oldcode != (hcode_t) -1) {
+		PutNextCode(op, sp->enc_oldcode);
+		sp->enc_oldcode = (hcode_t) -1;
+	}
+	PutNextCode(op, CODE_EOI);
+	if (nextbits > 0) 
+		*op++ = (unsigned char)(nextdata << (8-nextbits));
+	tif->tif_rawcc = (tsize_t)(op - tif->tif_rawdata);
+	return (1);
+}
+
+/*
+ * Reset encoding hash table.
+ */
+static void
+cl_hash(LZWCodecState* sp)
+{
+	register hash_t *hp = &sp->enc_hashtab[HSIZE-1];
+	register long i = HSIZE-8;
+
+ 	do {
+		i -= 8;
+		hp[-7].hash = -1;
+		hp[-6].hash = -1;
+		hp[-5].hash = -1;
+		hp[-4].hash = -1;
+		hp[-3].hash = -1;
+		hp[-2].hash = -1;
+		hp[-1].hash = -1;
+		hp[ 0].hash = -1;
+		hp -= 8;
+	} while (i >= 0);
+    	for (i += 8; i > 0; i--, hp--)
+		hp->hash = -1;
+}
+
+static void
+LZWCleanup(TIFF* tif)
+{
+	(void)TIFFPredictorCleanup(tif);
+
+	assert(tif->tif_data != 0);
+
+	if (DecoderState(tif)->dec_codetab)
+		_TIFFfree(DecoderState(tif)->dec_codetab);
+
+	if (EncoderState(tif)->enc_hashtab)
+		_TIFFfree(EncoderState(tif)->enc_hashtab);
+
+	_TIFFfree(tif->tif_data);
+	tif->tif_data = NULL;
+
+	_TIFFSetDefaultCompressionState(tif);
+}
+
+int
+TIFFInitLZW(TIFF* tif, int scheme)
+{
+	assert(scheme == COMPRESSION_LZW);
+	/*
+	 * Allocate state block so tag methods have storage to record values.
+	 */
+	tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (LZWCodecState));
+	if (tif->tif_data == NULL)
+		goto bad;
+	DecoderState(tif)->dec_codetab = NULL;
+	DecoderState(tif)->dec_decode = NULL;
+	EncoderState(tif)->enc_hashtab = NULL;
+        LZWState(tif)->rw_mode = tif->tif_mode;
+
+	/*
+	 * Install codec methods.
+	 */
+	tif->tif_setupdecode = LZWSetupDecode;
+	tif->tif_predecode = LZWPreDecode;
+	tif->tif_decoderow = LZWDecode;
+	tif->tif_decodestrip = LZWDecode;
+	tif->tif_decodetile = LZWDecode;
+	tif->tif_setupencode = LZWSetupEncode;
+	tif->tif_preencode = LZWPreEncode;
+	tif->tif_postencode = LZWPostEncode;
+	tif->tif_encoderow = LZWEncode;
+	tif->tif_encodestrip = LZWEncode;
+	tif->tif_encodetile = LZWEncode;
+	tif->tif_cleanup = LZWCleanup;
+	/*
+	 * Setup predictor setup.
+	 */
+	(void) TIFFPredictorInit(tif);
+	return (1);
+bad:
+	TIFFErrorExt(tif->tif_clientdata, "TIFFInitLZW", 
+		     "No space for LZW state block");
+	return (0);
+}
+
+/*
+ * Copyright (c) 1985, 1986 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * James A. Woods, derived from original work by Spencer Thomas
+ * and Joseph Orost.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+#endif /* LZW_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_next.c b/src/libtiff/tif_next.c
new file mode 100644
index 0000000..7223f7b
--- /dev/null
+++ b/src/libtiff/tif_next.c
@@ -0,0 +1,144 @@
+/* $Id: tif_next.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef NEXT_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * NeXT 2-bit Grey Scale Compression Algorithm Support
+ */
+
+#define SETPIXEL(op, v) {			\
+	switch (npixels++ & 3) {		\
+	case 0:	op[0]  = (unsigned char) ((v) << 6); break;	\
+	case 1:	op[0] |= (v) << 4; break;	\
+	case 2:	op[0] |= (v) << 2; break;	\
+	case 3:	*op++ |= (v);	   break;	\
+	}					\
+}
+
+#define LITERALROW	0x00
+#define LITERALSPAN	0x40
+#define WHITE   	((1<<2)-1)
+
+static int
+NeXTDecode(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s)
+{
+	register unsigned char *bp, *op;
+	register tsize_t cc;
+	register int n;
+	tidata_t row;
+	tsize_t scanline;
+
+	(void) s;
+	/*
+	 * Each scanline is assumed to start off as all
+	 * white (we assume a PhotometricInterpretation
+	 * of ``min-is-black'').
+	 */
+	for (op = buf, cc = occ; cc-- > 0;)
+		*op++ = 0xff;
+
+	bp = (unsigned char *)tif->tif_rawcp;
+	cc = tif->tif_rawcc;
+	scanline = tif->tif_scanlinesize;
+	for (row = buf; (long)occ > 0; occ -= scanline, row += scanline) {
+		n = *bp++, cc--;
+		switch (n) {
+		case LITERALROW:
+			/*
+			 * The entire scanline is given as literal values.
+			 */
+			if (cc < scanline)
+				goto bad;
+			_TIFFmemcpy(row, bp, scanline);
+			bp += scanline;
+			cc -= scanline;
+			break;
+		case LITERALSPAN: {
+			int off;
+			/*
+			 * The scanline has a literal span
+			 * that begins at some offset.
+			 */
+			off = (bp[0] * 256) + bp[1];
+			n = (bp[2] * 256) + bp[3];
+			if (cc < 4+n || off+n > scanline)
+				goto bad;
+			_TIFFmemcpy(row+off, bp+4, n);
+			bp += 4+n;
+			cc -= 4+n;
+			break;
+		}
+		default: {
+			register int npixels = 0, grey;
+			unsigned long imagewidth = tif->tif_dir.td_imagewidth;
+
+			/*
+			 * The scanline is composed of a sequence
+			 * of constant color ``runs''.  We shift
+			 * into ``run mode'' and interpret bytes
+			 * as codes of the form <color><npixels>
+			 * until we've filled the scanline.
+			 */
+			op = row;
+			for (;;) {
+				grey = (n>>6) & 0x3;
+				n &= 0x3f;
+				while (n-- > 0)
+					SETPIXEL(op, grey);
+				if (npixels >= (int) imagewidth)
+					break;
+				if (cc == 0)
+					goto bad;
+				n = *bp++, cc--;
+			}
+			break;
+		}
+		}
+	}
+	tif->tif_rawcp = (tidata_t) bp;
+	tif->tif_rawcc = cc;
+	return (1);
+bad:
+	TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "NeXTDecode: Not enough data for scanline %ld",
+	    (long) tif->tif_row);
+	return (0);
+}
+
+int
+TIFFInitNeXT(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	tif->tif_decoderow = NeXTDecode;
+	tif->tif_decodestrip = NeXTDecode;
+	tif->tif_decodetile = NeXTDecode;
+	return (1);
+}
+#endif /* NEXT_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_ojpeg.c b/src/libtiff/tif_ojpeg.c
new file mode 100644
index 0000000..ecc5e08
--- /dev/null
+++ b/src/libtiff/tif_ojpeg.c
@@ -0,0 +1,2629 @@
+/* $Id: tif_ojpeg.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+#include "tiffiop.h"
+#ifdef OJPEG_SUPPORT
+
+/* JPEG Compression support, as per the original TIFF 6.0 specification.
+
+   WARNING: KLUDGE ALERT!  The type of JPEG encapsulation defined by the TIFF
+                           Version 6.0 specification is now totally obsolete and
+   deprecated for new applications and images.  This file is an unsupported hack
+   that was created solely in order to read (but NOT write!) a few old,
+   unconverted images still present on some users' computer systems.  The code
+   isn't pretty or robust, and it won't read every "old format" JPEG-in-TIFF
+   file (see Samuel Leffler's draft "TIFF Technical Note No. 2" for a long and
+   incomplete list of known problems), but it seems to work well enough in the
+   few cases of practical interest to the author; so, "caveat emptor"!  This
+   file should NEVER be enhanced to write new images using anything other than
+   the latest approved JPEG-in-TIFF encapsulation method, implemented by the
+   "tif_jpeg.c" file elsewhere in this library.
+
+   This file interfaces with Release 6B of the JPEG Library written by theu
+   Independent JPEG Group, which you can find on the Internet at:
+   ftp://ftp.uu.net:/graphics/jpeg/.
+
+   The "C" Preprocessor macros, "[CD]_LOSSLESS_SUPPORTED", are defined by your
+   JPEG Library Version 6B only if you have applied a (massive!) patch by Ken
+   Murchison of Oceana Matrix Ltd. <ken@oceana.com> to support lossless Huffman
+   encoding (TIFF "JPEGProc" tag value = 14).  This patch can be found on the
+   Internet at: ftp://ftp.oceana.com/pub/ljpeg-6b.tar.gz.
+
+   Some old files produced by the Wang Imaging application for Microsoft Windows
+   apparently can be decoded only with a special patch to the JPEG Library,
+   which defines a subroutine named "jpeg_reset_huff_decode()" in its "jdhuff.c"
+   module (the "jdshuff.c" module, if Ken Murchison's patch has been applied).
+   Unfortunately the patch differs slightly in each case, and some TIFF Library
+   have reported problems finding the code, so both versions appear below; you
+   should carefully extract and apply only the version that applies to your JPEG
+   Library!
+
+   Contributed by Scott Marovich <marovich@hpl.hp.com> with considerable help
+   from Charles Auer <Bumble731@msn.com> to unravel the mysteries of image files
+   created by the Wang Imaging application for Microsoft Windows.
+*/
+#if 0  /* Patch for JPEG Library WITHOUT lossless Huffman coding */
+*** jdhuff.c.orig	Mon Oct 20 17:51:10 1997
+--- jdhuff.c	Sun Nov 11 17:33:58 2001
+***************
+*** 648,651 ****
+--- 648,683 ----
+    for (i = 0; i < NUM_HUFF_TBLS; i++) {
+      entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL;
+    }
+  }
++ 
++ /*
++  * BEWARE OF KLUDGE:  This subroutine is a hack for decoding illegal JPEG-in-
++  *                    TIFF encapsulations produced by Microsoft's Wang Imaging
++  * for Windows application with the public-domain TIFF Library.  Based upon an
++  * examination of selected output files, this program apparently divides a JPEG
++  * bit-stream into consecutive horizontal TIFF "strips", such that the JPEG
++  * encoder's/decoder's DC coefficients for each image component are reset before
++  * each "strip".  Moreover, a "strip" is not necessarily encoded in a multiple
++  * of 8 bits, so one must sometimes discard 1-7 bits at the end of each "strip"
++  * for alignment to the next input-Byte storage boundary.  IJG JPEG Library
++  * decoder state is not normally exposed to client applications, so this sub-
++  * routine provides the TIFF Library with a "hook" to make these corrections.
++  * It should be called after "jpeg_start_decompress()" and before
++  * "jpeg_finish_decompress()", just before decoding each "strip" using
++  * "jpeg_read_raw_data()" or "jpeg_read_scanlines()".
++  *
++  * This kludge is not sanctioned or supported by the Independent JPEG Group, and
++  * future changes to the IJG JPEG Library might invalidate it.  Do not send bug
++  * reports about this code to IJG developers.  Instead, contact the author for
++  * advice: Scott B. Marovich <marovich@hpl.hp.com>, Hewlett-Packard Labs, 6/01.
++  */
++ GLOBAL(void)
++ jpeg_reset_huff_decode (register j_decompress_ptr cinfo)
++ { register huff_entropy_ptr entropy = (huff_entropy_ptr)cinfo->entropy;
++   register int ci = 0;
++ 
++   /* Discard encoded input bits, up to the next Byte boundary */
++   entropy->bitstate.bits_left &= ~7;
++   /* Re-initialize DC predictions to 0 */
++   do entropy->saved.last_dc_val[ci] = 0; while (++ci < cinfo->comps_in_scan);
++ }
+#endif /* Patch for JPEG Library WITHOUT lossless Huffman coding */
+#if 0  /* Patch for JPEG Library WITH lossless Huffman coding */
+*** jdshuff.c.orig	Mon Mar 11 16:44:54 2002
+--- jdshuff.c	Mon Mar 11 16:44:54 2002
+***************
+*** 357,360 ****
+--- 357,393 ----
+    for (i = 0; i < NUM_HUFF_TBLS; i++) {
+      entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL;
+    }
+  }
++ 
++ /*
++  * BEWARE OF KLUDGE:  This subroutine is a hack for decoding illegal JPEG-in-
++  *                    TIFF encapsulations produced by Microsoft's Wang Imaging
++  * for Windows application with the public-domain TIFF Library.  Based upon an
++  * examination of selected output files, this program apparently divides a JPEG
++  * bit-stream into consecutive horizontal TIFF "strips", such that the JPEG
++  * encoder's/decoder's DC coefficients for each image component are reset before
++  * each "strip".  Moreover, a "strip" is not necessarily encoded in a multiple
++  * of 8 bits, so one must sometimes discard 1-7 bits at the end of each "strip"
++  * for alignment to the next input-Byte storage boundary.  IJG JPEG Library
++  * decoder state is not normally exposed to client applications, so this sub-
++  * routine provides the TIFF Library with a "hook" to make these corrections.
++  * It should be called after "jpeg_start_decompress()" and before
++  * "jpeg_finish_decompress()", just before decoding each "strip" using
++  * "jpeg_read_raw_data()" or "jpeg_read_scanlines()".
++  *
++  * This kludge is not sanctioned or supported by the Independent JPEG Group, and
++  * future changes to the IJG JPEG Library might invalidate it.  Do not send bug
++  * reports about this code to IJG developers.  Instead, contact the author for
++  * advice: Scott B. Marovich <marovich@hpl.hp.com>, Hewlett-Packard Labs, 6/01.
++  */
++ GLOBAL(void)
++ jpeg_reset_huff_decode (register j_decompress_ptr cinfo)
++ { register shuff_entropy_ptr entropy = (shuff_entropy_ptr)
++                                        ((j_lossy_d_ptr)cinfo->codec)->entropy_private;
++   register int ci = 0;
++ 
++   /* Discard encoded input bits, up to the next Byte boundary */
++   entropy->bitstate.bits_left &= ~7;
++   /* Re-initialize DC predictions to 0 */
++   do entropy->saved.last_dc_val[ci] = 0; while (++ci < cinfo->comps_in_scan);
++ }
+#endif /* Patch for JPEG Library WITH lossless Huffman coding */
+#include <setjmp.h>
+#include <stdio.h>
+#ifdef FAR
+#undef FAR /* Undefine FAR to avoid conflict with JPEG definition */
+#endif
+#define JPEG_INTERNALS /* Include "jpegint.h" for "DSTATE_*" symbols */
+#define JPEG_CJPEG_DJPEG /* Include all Version 6B+ "jconfig.h" options */
+#undef INLINE
+#include "jpeglib.h"
+#undef JPEG_CJPEG_DJPEG
+#undef JPEG_INTERNALS
+
+/* Hack for files produced by Wang Imaging application on Microsoft Windows */
+extern void jpeg_reset_huff_decode(j_decompress_ptr);
+
+/* On some machines, it may be worthwhile to use "_setjmp()" or "sigsetjmp()"
+   instead of "setjmp()".  These macros make it easier:
+*/
+#define SETJMP(jbuf)setjmp(jbuf)
+#define LONGJMP(jbuf,code)longjmp(jbuf,code)
+#define JMP_BUF jmp_buf
+
+#define TIFFTAG_WANG_PAGECONTROL 32934
+
+/* Bit-vector offsets for keeping track of TIFF records that we've parsed. */
+
+#define FIELD_JPEGPROC FIELD_CODEC
+#define FIELD_JPEGIFOFFSET (FIELD_CODEC+1)
+#define FIELD_JPEGIFBYTECOUNT (FIELD_CODEC+2)
+#define FIELD_JPEGRESTARTINTERVAL (FIELD_CODEC+3)
+#define FIELD_JPEGTABLES (FIELD_CODEC+4) /* New, post-6.0 JPEG-in-TIFF tag! */
+#define FIELD_JPEGLOSSLESSPREDICTORS (FIELD_CODEC+5)
+#define FIELD_JPEGPOINTTRANSFORM (FIELD_CODEC+6)
+#define FIELD_JPEGQTABLES (FIELD_CODEC+7)
+#define FIELD_JPEGDCTABLES (FIELD_CODEC+8)
+#define FIELD_JPEGACTABLES (FIELD_CODEC+9)
+#define FIELD_WANG_PAGECONTROL (FIELD_CODEC+10)
+#define FIELD_JPEGCOLORMODE (FIELD_CODEC+11)
+
+typedef struct jpeg_destination_mgr jpeg_destination_mgr;
+typedef struct jpeg_source_mgr jpeg_source_mgr;
+typedef struct jpeg_error_mgr jpeg_error_mgr;
+
+/* State variable for each open TIFF file that uses "libjpeg" for JPEG
+   decompression.  (Note:  This file should NEVER perform JPEG compression
+   except in the manner implemented by the "tif_jpeg.c" file, elsewhere in this
+   library; see comments above.)  JPEG Library internal state is recorded in a
+   "jpeg_{de}compress_struct", while a "jpeg_common_struct" records a few items
+   common to both compression and expansion.  The "cinfo" field containing JPEG
+   Library state MUST be the 1st member of our own state variable, so that we
+   can safely "cast" pointers back and forth.
+*/
+typedef struct             /* This module's private, per-image state variable */
+  {
+    union         /* JPEG Library state variable; this MUST be our 1st field! */
+      {
+        struct jpeg_compress_struct c;
+        struct jpeg_decompress_struct d;
+        struct jpeg_common_struct comm;
+      } cinfo;
+    jpeg_error_mgr err;                         /* JPEG Library error manager */
+    JMP_BUF exit_jmpbuf;             /* ...for catching JPEG Library failures */
+#   ifdef never
+
+ /* (The following two fields could be a "union", but they're small enough that
+    it's not worth the effort.)
+ */
+    jpeg_destination_mgr dest;             /* Destination for compressed data */
+#   endif
+    jpeg_source_mgr src;                           /* Source of expanded data */
+    JSAMPARRAY ds_buffer[MAX_COMPONENTS]; /* ->Temporary downsampling buffers */
+    TIFF *tif;                        /* Reverse pointer, needed by some code */
+    TIFFVGetMethod vgetparent;                    /* "Super class" methods... */
+    TIFFVSetMethod vsetparent;
+    TIFFStripMethod defsparent;
+    TIFFTileMethod deftparent;
+    void *jpegtables;           /* ->"New" JPEG tables, if we synthesized any */
+    uint32 is_WANG,    /* <=> Wang Imaging for Microsoft Windows output file? */
+           jpegtables_length;   /* Length of "new" JPEG tables, if they exist */
+    tsize_t bytesperline;          /* No. of decompressed Bytes per scan line */
+    int jpegquality,                             /* Compression quality level */
+        jpegtablesmode,                          /* What to put in JPEGTables */
+        samplesperclump,
+        scancount;                           /* No. of scan lines accumulated */
+    J_COLOR_SPACE photometric;          /* IJG JPEG Library's photometry code */
+    unsigned char h_sampling,                          /* Luminance sampling factors */
+           v_sampling,
+           jpegcolormode;           /* Who performs RGB <-> YCbCr conversion? */
+			/* JPEGCOLORMODE_RAW <=> TIFF Library or its client */
+			/* JPEGCOLORMODE_RGB <=> JPEG Library               */
+    /* These fields are added to support TIFFGetField */
+    uint16 jpegproc;
+    uint32 jpegifoffset;
+    uint32 jpegifbytecount;
+    uint32 jpegrestartinterval;
+    void* jpeglosslesspredictors;
+    uint16 jpeglosslesspredictors_length;
+    void* jpegpointtransform;
+    uint32 jpegpointtransform_length;
+    void* jpegqtables;
+    uint32 jpegqtables_length;
+    void* jpegdctables;
+    uint32 jpegdctables_length;
+    void* jpegactables;
+    uint32 jpegactables_length;
+
+  } OJPEGState;
+#define OJState(tif)((OJPEGState*)(tif)->tif_data)
+
+static const TIFFFieldInfo ojpegFieldInfo[]=/* JPEG-specific TIFF-record tags */
+  {
+
+ /* This is the current JPEG-in-TIFF metadata-encapsulation tag, and its
+    treatment in this file is idiosyncratic.  It should never appear in a
+    "source" image conforming to the TIFF Version 6.0 specification, so we
+    arrange to report an error if it appears.  But in order to support possible
+    future conversion of "old" JPEG-in-TIFF encapsulations to "new" ones, we
+    might wish to synthesize an equivalent value to be returned by the TIFF
+    Library's "getfield" method.  So, this table tells the TIFF Library to pass
+    these records to us in order to filter them below.
+ */
+    {
+      TIFFTAG_JPEGTABLES            ,TIFF_VARIABLE2,TIFF_VARIABLE2,
+      TIFF_UNDEFINED,FIELD_JPEGTABLES            ,FALSE,TRUE ,"JPEGTables"
+    },
+
+ /* These tags are defined by the TIFF Version 6.0 specification and are now
+    obsolete.  This module reads them from an old "source" image, but it never
+    writes them to a new "destination" image.
+ */
+    {
+      TIFFTAG_JPEGPROC              ,1            ,1            ,
+      TIFF_SHORT    ,FIELD_JPEGPROC              ,FALSE,FALSE,"JPEGProc"
+    },
+    {
+      TIFFTAG_JPEGIFOFFSET          ,1            ,1            ,
+      TIFF_LONG     ,FIELD_JPEGIFOFFSET          ,FALSE,FALSE,"JPEGInterchangeFormat"
+    },
+    {
+      TIFFTAG_JPEGIFBYTECOUNT       ,1            ,1            ,
+      TIFF_LONG     ,FIELD_JPEGIFBYTECOUNT       ,FALSE,FALSE,"JPEGInterchangeFormatLength"
+    },
+    {
+      TIFFTAG_JPEGRESTARTINTERVAL   ,1            ,1            ,
+      TIFF_SHORT    ,FIELD_JPEGRESTARTINTERVAL   ,FALSE,FALSE,"JPEGRestartInterval"
+    },
+    {
+      TIFFTAG_JPEGLOSSLESSPREDICTORS,TIFF_VARIABLE,TIFF_VARIABLE,
+      TIFF_SHORT    ,FIELD_JPEGLOSSLESSPREDICTORS,FALSE,TRUE ,"JPEGLosslessPredictors"
+    },
+    {
+      TIFFTAG_JPEGPOINTTRANSFORM    ,TIFF_VARIABLE,TIFF_VARIABLE,
+      TIFF_SHORT    ,FIELD_JPEGPOINTTRANSFORM    ,FALSE,TRUE ,"JPEGPointTransforms"
+    },
+    {
+      TIFFTAG_JPEGQTABLES           ,TIFF_VARIABLE,TIFF_VARIABLE,
+      TIFF_LONG     ,FIELD_JPEGQTABLES           ,FALSE,TRUE ,"JPEGQTables"
+    },
+    {
+      TIFFTAG_JPEGDCTABLES          ,TIFF_VARIABLE,TIFF_VARIABLE,
+      TIFF_LONG     ,FIELD_JPEGDCTABLES          ,FALSE,TRUE ,"JPEGDCTables"
+    },
+    {
+      TIFFTAG_JPEGACTABLES          ,TIFF_VARIABLE,TIFF_VARIABLE,
+      TIFF_LONG     ,FIELD_JPEGACTABLES          ,FALSE,TRUE ,"JPEGACTables"
+    },
+    {
+      TIFFTAG_WANG_PAGECONTROL      ,TIFF_VARIABLE,1            ,
+      TIFF_LONG     ,FIELD_WANG_PAGECONTROL      ,FALSE,FALSE,"WANG PageControl"
+    },
+
+ /* This is a pseudo tag intended for internal use only by the TIFF Library and
+    its clients, which should never appear in an input/output image file.  It
+    specifies whether the TIFF Library (or its client) should do YCbCr <-> RGB
+    color-space conversion (JPEGCOLORMODE_RAW <=> 0) or whether we should ask
+    the JPEG Library to do it (JPEGCOLORMODE_RGB <=> 1).
+ */
+    {
+      TIFFTAG_JPEGCOLORMODE         ,0            ,0            ,
+      TIFF_ANY      ,FIELD_PSEUDO                ,FALSE,FALSE,"JPEGColorMode"
+    }
+  };
+static const char JPEGLib_name[]={"JPEG Library"},
+                  bad_bps[]={"%u BitsPerSample not allowed for JPEG"},
+                  bad_photometry[]={"PhotometricInterpretation %u not allowed for JPEG"},
+                  bad_subsampling[]={"invalid YCbCr subsampling factor(s)"},
+#                 ifdef never
+                  no_write_frac[]={"fractional scan line discarded"},
+#                 endif
+                  no_read_frac[]={"fractional scan line not read"},
+                  no_jtable_space[]={"No space for JPEGTables"};
+
+/* The following diagnostic subroutines interface with and replace default
+   subroutines in the JPEG Library.  Our basic strategy is to use "setjmp()"/
+   "longjmp()" in order to return control to the TIFF Library when the JPEG
+   library detects an error, and to use TIFF Library subroutines for displaying
+   diagnostic messages to a client application.
+*/
+static void
+TIFFojpeg_error_exit(register j_common_ptr cinfo)
+{
+    char buffer[JMSG_LENGTH_MAX];
+    int code = cinfo->err->msg_code;
+
+    if (((OJPEGState *)cinfo)->is_WANG) {
+	if (code == JERR_SOF_DUPLICATE || code == JERR_SOI_DUPLICATE)
+	    return;	    /* ignore it */
+    }
+
+    (*cinfo->err->format_message)(cinfo,buffer);
+    TIFFError(JPEGLib_name,buffer); /* Display error message */
+    jpeg_abort(cinfo); /* Clean up JPEG Library state */
+    LONGJMP(((OJPEGState *)cinfo)->exit_jmpbuf,1); /* Return to TIFF client */
+}
+
+static void
+TIFFojpeg_output_message(register j_common_ptr cinfo)
+  { char buffer[JMSG_LENGTH_MAX];
+
+ /* This subroutine is invoked only for warning messages, since the JPEG
+    Library's "error_exit" method does its own thing and "trace_level" is never
+    set > 0.
+ */
+    (*cinfo->err->format_message)(cinfo,buffer);
+    TIFFWarning(JPEGLib_name,buffer);
+  }
+
+/* The following subroutines, which also interface with the JPEG Library, exist
+   mainly in limit the side effects of "setjmp()" and convert JPEG normal/error
+   conditions into TIFF Library return codes.
+*/
+#define CALLJPEG(sp,fail,op)(SETJMP((sp)->exit_jmpbuf)?(fail):(op))
+#define CALLVJPEG(sp,op)CALLJPEG(sp,0,((op),1))
+#ifdef never
+
+static int
+TIFFojpeg_create_compress(register OJPEGState *sp)
+  {
+    sp->cinfo.c.err = jpeg_std_error(&sp->err); /* Initialize error handling */
+    sp->err.error_exit = TIFFojpeg_error_exit;
+    sp->err.output_message = TIFFojpeg_output_message;
+    return CALLVJPEG(sp,jpeg_create_compress(&sp->cinfo.c));
+  }
+
+/* The following subroutines comprise a JPEG Library "destination" data manager
+   by directing compressed data from the JPEG Library to a TIFF Library output
+   buffer.
+*/
+static void
+std_init_destination(register j_compress_ptr cinfo){} /* "Dummy" stub */
+
+static boolean
+std_empty_output_buffer(register j_compress_ptr cinfo)
+  {
+#   define sp ((OJPEGState *)cinfo)
+    register TIFF *tif = sp->tif;
+
+    tif->tif_rawcc = tif->tif_rawdatasize; /* Entire buffer has been filled */
+    TIFFFlushData1(tif);
+    sp->dest.next_output_byte = (JOCTET *)tif->tif_rawdata;
+    sp->dest.free_in_buffer = (size_t)tif->tif_rawdatasize;
+    return TRUE;
+#   undef sp
+  }
+
+static void
+std_term_destination(register j_compress_ptr cinfo)
+  {
+#   define sp ((OJPEGState *)cinfo)
+    register TIFF *tif = sp->tif;
+
+ /* NB: The TIFF Library does the final buffer flush. */
+    tif->tif_rawcp = (tidata_t)sp->dest.next_output_byte;
+    tif->tif_rawcc = tif->tif_rawdatasize - (tsize_t)sp->dest.free_in_buffer;
+#   undef sp
+  }
+
+/* Alternate destination manager to output JPEGTables field: */
+
+static void
+tables_init_destination(register j_compress_ptr cinfo)
+  {
+#   define sp ((OJPEGState *)cinfo)
+ /* The "jpegtables_length" field is the allocated buffer size while building */
+    sp->dest.next_output_byte = (JOCTET *)sp->jpegtables;
+    sp->dest.free_in_buffer = (size_t)sp->jpegtables_length;
+#   undef sp
+  }
+
+static boolean
+tables_empty_output_buffer(register j_compress_ptr cinfo)
+  { void *newbuf;
+#   define sp ((OJPEGState *)cinfo)
+
+ /* The entire buffer has been filled, so enlarge it by 1000 bytes. */
+    if (!( newbuf = _TIFFrealloc( (tdata_t)sp->jpegtables
+                                , (tsize_t)(sp->jpegtables_length + 1000)
+                                )
+         )
+       ) ERREXIT1(cinfo,JERR_OUT_OF_MEMORY,100);
+    sp->dest.next_output_byte = (JOCTET *)newbuf + sp->jpegtables_length;
+    sp->dest.free_in_buffer = (size_t)1000;
+    sp->jpegtables = newbuf;
+    sp->jpegtables_length += 1000;
+    return TRUE;
+#   undef sp
+  }
+
+static void
+tables_term_destination(register j_compress_ptr cinfo)
+  {
+#   define sp ((OJPEGState *)cinfo)
+ /* Set tables length to no. of Bytes actually emitted. */
+    sp->jpegtables_length -= sp->dest.free_in_buffer;
+#   undef sp
+  }
+
+/*ARGSUSED*/ static int
+TIFFojpeg_tables_dest(register OJPEGState *sp, TIFF *tif)
+  {
+
+ /* Allocate a working buffer for building tables.  The initial size is 1000
+    Bytes, which is usually adequate.
+ */
+    if (sp->jpegtables) _TIFFfree(sp->jpegtables);
+    if (!(sp->jpegtables = (void*)
+                           _TIFFmalloc((tsize_t)(sp->jpegtables_length = 1000))
+         )
+       )
+      {
+        sp->jpegtables_length = 0;
+        TIFFError("TIFFojpeg_tables_dest",no_jtable_space);
+        return 0;
+      };
+    sp->cinfo.c.dest = &sp->dest;
+    sp->dest.init_destination = tables_init_destination;
+    sp->dest.empty_output_buffer = tables_empty_output_buffer;
+    sp->dest.term_destination = tables_term_destination;
+    return 1;
+  }
+#else /* well, hardly ever */
+
+static int
+_notSupported(register TIFF *tif)
+  { const TIFFCodec *c = TIFFFindCODEC(tif->tif_dir.td_compression);
+
+    TIFFError(tif->tif_name,"%s compression not supported",c->name);
+    return 0;
+  }
+#endif /* never */
+
+/* The following subroutines comprise a JPEG Library "source" data manager by
+   by directing compressed data to the JPEG Library from a TIFF Library input
+   buffer.
+*/
+static void
+std_init_source(register j_decompress_ptr cinfo)
+  {
+#   define sp ((OJPEGState *)cinfo)
+    register TIFF *tif = sp->tif;
+
+    if (sp->src.bytes_in_buffer == 0)
+      {
+        sp->src.next_input_byte = (const JOCTET *)tif->tif_rawdata;
+        sp->src.bytes_in_buffer = (size_t)tif->tif_rawcc;
+      };
+#   undef sp
+  }
+
+static boolean
+std_fill_input_buffer(register j_decompress_ptr cinfo)
+  { static const JOCTET dummy_EOI[2]={0xFF,JPEG_EOI};
+#   define sp ((OJPEGState *)cinfo)
+
+ /* Control should never get here, since an entire strip/tile is read into
+    memory before the decompressor is called; thus, data should have been
+    supplied by the "init_source" method.  ...But, sometimes things fail.
+ */
+    WARNMS(cinfo,JWRN_JPEG_EOF);
+    sp->src.next_input_byte = dummy_EOI; /* Insert a fake EOI marker */
+    sp->src.bytes_in_buffer = sizeof dummy_EOI;
+    return TRUE;
+#   undef sp
+  }
+
+static void
+std_skip_input_data(register j_decompress_ptr cinfo, long num_bytes)
+  {
+#   define sp ((OJPEGState *)cinfo)
+
+    if (num_bytes > 0)
+    {
+      if (num_bytes > (long)sp->src.bytes_in_buffer) /* oops: buffer overrun */
+        (void)std_fill_input_buffer(cinfo);
+      else
+        {
+          sp->src.next_input_byte += (size_t)num_bytes;
+          sp->src.bytes_in_buffer -= (size_t)num_bytes;
+        }
+    }
+#   undef sp
+  }
+
+/*ARGSUSED*/ static void
+std_term_source(register j_decompress_ptr cinfo){} /* "Dummy" stub */
+
+/* Allocate temporary I/O buffers for downsampled data, using values computed in
+   "jpeg_start_{de}compress()".  We use the JPEG Library's allocator so that
+   buffers will be released automatically when done with a strip/tile.  This is
+   also a handy place to compute samplesperclump, bytesperline, etc.
+*/
+static int
+alloc_downsampled_buffers(TIFF *tif,jpeg_component_info *comp_info,
+                          int num_components)
+  { register OJPEGState *sp = OJState(tif);
+
+    sp->samplesperclump = 0;
+    if (num_components > 0)
+      { tsize_t size = sp->cinfo.comm.is_decompressor
+#                    ifdef D_LOSSLESS_SUPPORTED
+                     ? sp->cinfo.d.min_codec_data_unit
+#                    else
+                     ? DCTSIZE
+#                    endif
+#                    ifdef C_LOSSLESS_SUPPORTED
+                     : sp->cinfo.c.data_unit;
+#                    else
+                     : DCTSIZE;
+#                    endif
+        int ci = 0;
+        register jpeg_component_info *compptr = comp_info;
+
+        do
+          { JSAMPARRAY buf;
+
+            sp->samplesperclump +=
+              compptr->h_samp_factor * compptr->v_samp_factor;
+#           if defined(C_LOSSLESS_SUPPORTED) || defined(D_LOSSLESS_SUPPORTED)
+            if (!(buf = CALLJPEG(sp,0,(*sp->cinfo.comm.mem->alloc_sarray)(&sp->cinfo.comm,JPOOL_IMAGE,compptr->width_in_data_units*size,compptr->v_samp_factor*size))))
+#           else
+            if (!(buf = CALLJPEG(sp,0,(*sp->cinfo.comm.mem->alloc_sarray)(&sp->cinfo.comm,JPOOL_IMAGE,compptr->width_in_blocks*size,compptr->v_samp_factor*size))))
+#           endif
+              return 0;
+            sp->ds_buffer[ci] = buf;
+          }
+        while (++compptr,++ci < num_components);
+      };
+    return 1;
+  }
+#ifdef never
+
+/* JPEG Encoding begins here. */
+
+/*ARGSUSED*/ static int
+OJPEGEncode(register TIFF *tif,tidata_t buf,tsize_t cc,tsample_t s)
+  { tsize_t rows;                          /* No. of unprocessed rows in file */
+    register OJPEGState *sp = OJState(tif);
+
+ /* Encode a chunk of pixels, where returned data is NOT down-sampled (the
+    standard case).  The data is expected to be written in scan-line multiples.
+ */
+    if (cc % sp->bytesperline) TIFFWarning(tif->tif_name,no_write_frac);
+    if ( (cc /= bytesperline)      /* No. of complete rows in caller's buffer */
+       > (rows = sp->cinfo.c.image_height - sp->cinfo.c.next_scanline)
+       ) cc = rows;
+    while (--cc >= 0)
+      {
+        if (   CALLJPEG(sp,-1,jpeg_write_scanlines(&sp->cinfo.c,(JSAMPARRAY)&buf,1))
+            != 1
+           ) return 0;
+        ++tif->tif_row;
+        buf += sp->bytesperline;
+      };
+    return 1;
+  }
+
+/*ARGSUSED*/ static int
+OJPEGEncodeRaw(register TIFF *tif,tidata_t buf,tsize_t cc,tsample_t s)
+  { tsize_t rows;                          /* No. of unprocessed rows in file */
+    JDIMENSION lines_per_MCU, size;
+    register OJPEGState *sp = OJState(tif);
+
+ /* Encode a chunk of pixels, where returned data is down-sampled as per the
+    sampling factors.  The data is expected to be written in scan-line
+    multiples.
+ */
+    cc /= sp->bytesperline;
+    if (cc % sp->bytesperline) TIFFWarning(tif->tif_name,no_write_frac);
+    if ( (cc /= bytesperline)      /* No. of complete rows in caller's buffer */
+       > (rows = sp->cinfo.c.image_height - sp->cinfo.c.next_scanline)
+       ) cc = rows;
+#   ifdef C_LOSSLESS_SUPPORTED
+    lines_per_MCU = sp->cinfo.c.max_samp_factor*(size = sp->cinfo.d.data_unit);
+#   else
+    lines_per_MCU = sp->cinfo.c.max_samp_factor*(size = DCTSIZE);
+#   endif
+    while (--cc >= 0)
+      { int ci = 0, clumpoffset = 0;
+        register jpeg_component_info *compptr = sp->cinfo.c.comp_info;
+
+     /* The fastest way to separate the data is to make 1 pass over the scan
+        line for each row of each component.
+     */
+        do
+          { int ypos = 0;
+
+            do
+              { int padding;
+                register JSAMPLE *inptr = (JSAMPLE*)buf + clumpoffset,
+                                 *outptr =
+                  sp->ds_buffer[ci][sp->scancount*compptr->v_samp_factor+ypos];
+             /* Cb,Cr both have sampling factors 1, so this is correct */
+                register int clumps_per_line =
+                  sp->cinfo.c.comp_info[1].downsampled_width,
+                             xpos;
+
+                padding = (int)
+#                         ifdef C_LOSSLESS_SUPPORTED
+                          ( compptr->width_in_data_units * size
+#                         else
+                          ( compptr->width_in_blocks * size
+#                         endif
+                          - clumps_per_line * compptr->h_samp_factor
+                          );
+                if (compptr->h_samp_factor == 1) /* Cb & Cr fast path */
+                  do *outptr++ = *inptr;
+                  while ((inptr += sp->samplesperclump),--clumps_per_line > 0);
+                else /* general case */
+                  do
+                    {
+                      xpos = 0;
+                      do *outptr++ = inptr[xpos];
+                      while (++xpos < compptr->h_samp_factor);
+                    }
+                  while ((inptr += sp->samplesperclump),--clumps_per_line > 0);
+                xpos = 0; /* Pad each scan line as needed */
+                do outptr[0] = outptr[-1]; while (++outptr,++xpos < padding);
+                clumpoffset += compptr->h_samp_factor;
+              }
+            while (++ypos < compptr->v_samp_factor);
+          }
+        while (++compptr,++ci < sp->cinfo.c.num_components);
+        if (++sp->scancount >= size)
+          {
+            if (   CALLJPEG(sp,-1,jpeg_write_raw_data(&sp->cinfo.c,sp->ds_buffer,lines_per_MCU))
+                != lines_per_MCU
+               ) return 0;
+            sp->scancount = 0;
+          };
+        ++tif->tif_row++
+        buf += sp->bytesperline;
+      };
+    return 1;
+  }
+
+static int
+OJPEGSetupEncode(register TIFF *tif)
+  { static const char module[]={"OJPEGSetupEncode"};
+    uint32 segment_height, segment_width;
+    int status = 1;                              /* Assume success by default */
+    register OJPEGState *sp = OJState(tif);
+#   define td (&tif->tif_dir)
+
+ /* Verify miscellaneous parameters.  This will need work if the TIFF Library
+    ever supports different depths for different components, or if the JPEG
+    Library ever supports run-time depth selection.  Neither seems imminent.
+ */
+    if (td->td_bitspersample != 8)
+      {
+        TIFFError(module,bad_bps,td->td_bitspersample);
+        status = 0;
+      };
+
+ /* The TIFF Version 6.0 specification and IJG JPEG Library accept different
+    sets of color spaces, so verify that our image belongs to the common subset
+    and map its photometry code, then initialize to handle subsampling and
+    optional JPEG Library YCbCr <-> RGB color-space conversion.
+ */
+    switch (td->td_photometric)
+      {
+        case PHOTOMETRIC_YCBCR     :
+
+       /* ISO IS 10918-1 requires that JPEG subsampling factors be 1-4, but
+          TIFF Version 6.0 is more restrictive: only 1, 2, and 4 are allowed.
+       */
+          if (   (   td->td_ycbcrsubsampling[0] == 1
+                  || td->td_ycbcrsubsampling[0] == 2
+                  || td->td_ycbcrsubsampling[0] == 4
+                 )
+              && (   td->td_ycbcrsubsampling[1] == 1
+                  || td->td_ycbcrsubsampling[1] == 2
+                  || td->td_ycbcrsubsampling[1] == 4
+                 )
+             )
+            sp->cinfo.c.raw_data_in =
+              ( (sp->h_sampling = td->td_ycbcrsubsampling[0]) << 3
+              | (sp->v_sampling = td->td_ycbcrsubsampling[1])
+              ) != 011;
+          else
+            {
+              TIFFError(module,bad_subsampling);
+              status = 0;
+            };
+
+       /* A ReferenceBlackWhite field MUST be present, since the default value
+          is inapproriate for YCbCr.  Fill in the proper value if the
+          application didn't set it.
+       */
+          if (!TIFFFieldSet(tif,FIELD_REFBLACKWHITE))
+            { float refbw[6];
+              long top = 1L << td->td_bitspersample;
+ 
+              refbw[0] = 0;
+              refbw[1] = (float)(top-1L);
+              refbw[2] = (float)(top>>1);
+              refbw[3] = refbw[1];
+              refbw[4] = refbw[2];
+              refbw[5] = refbw[1];
+              TIFFSetField(tif,TIFFTAG_REFERENCEBLACKWHITE,refbw);
+            };
+          sp->cinfo.c.jpeg_color_space = JCS_YCbCr;
+          if (sp->jpegcolormode == JPEGCOLORMODE_RGB)
+            {
+              sp->cinfo.c.raw_data_in = FALSE;
+              sp->in_color_space = JCS_RGB;
+              break;
+            };
+          goto L2;
+        case PHOTOMETRIC_MINISBLACK:
+          sp->cinfo.c.jpeg_color_space = JCS_GRAYSCALE;
+          goto L1;
+        case PHOTOMETRIC_RGB       :
+          sp->cinfo.c.jpeg_color_space = JCS_RGB;
+          goto L1;
+        case PHOTOMETRIC_SEPARATED :
+          sp->cinfo.c.jpeg_color_space = JCS_CMYK;
+      L1: sp->jpegcolormode = JPEGCOLORMODE_RAW; /* No JPEG Lib. conversion */
+      L2: sp->cinfo.d.in_color_space = sp->cinfo.d.jpeg_color-space;
+          break;
+        default                    :
+          TIFFError(module,bad_photometry,td->td_photometric);
+          status = 0;
+      };
+    tif->tif_encoderow = tif->tif_encodestrip = tif->tif_encodetile =
+      sp->cinfo.c.raw_data_in ? OJPEGEncodeRaw : OJPEGEncode;
+    if (isTiled(tif))
+      { tsize_t size;
+
+#       ifdef C_LOSSLESS_SUPPORTED
+        if ((size = sp->v_sampling*sp->cinfo.c.data_unit) < 16) size = 16;
+#       else
+        if ((size = sp->v_sampling*DCTSIZE) < 16) size = 16;
+#       endif
+        if ((segment_height = td->td_tilelength) % size)
+          {
+            TIFFError(module,"JPEG tile height must be multiple of %d",size);
+            status = 0;
+          };
+#       ifdef C_LOSSLESS_SUPPORTED
+        if ((size = sp->h_sampling*sp->cinfo.c.data_unit) < 16) size = 16;
+#       else
+        if ((size = sp->h_sampling*DCTSIZE) < 16) size = 16;
+#       endif
+        if ((segment_width = td->td_tilewidth) % size)
+          {
+            TIFFError(module,"JPEG tile width must be multiple of %d",size);
+            status = 0;
+          };
+        sp->bytesperline = TIFFTileRowSize(tif);
+      }
+    else
+      { tsize_t size;
+
+#       ifdef C_LOSSLESS_SUPPORTED
+        if ((size = sp->v_sampling*sp->cinfo.c.data_unit) < 16) size = 16;
+#       else
+        if ((size = sp->v_sampling*DCTSIZE) < 16) size = 16;
+#       endif
+        if (td->td_rowsperstrip < (segment_height = td->td_imagelength))
+          {
+            if (td->td_rowsperstrip % size)
+              {
+                TIFFError(module,"JPEG RowsPerStrip must be multiple of %d",size);
+                status = 0;
+              };
+            segment_height = td->td_rowsperstrip;
+          };
+        segment_width = td->td_imagewidth;
+        sp->bytesperline = tif->tif_scanlinesize;
+      };
+    if (segment_width > 65535 || segment_height > 65535)
+      {
+        TIFFError(module,"Strip/tile too large for JPEG");
+        status = 0;
+      };
+
+ /* Initialize all JPEG parameters to default values.  Note that the JPEG
+    Library's "jpeg_set_defaults()" method needs legal values for the
+    "in_color_space" and "input_components" fields.
+ */
+    sp->cinfo.c.input_components = 1; /* Default for JCS_UNKNOWN */
+    if (!CALLVJPEG(sp,jpeg_set_defaults(&sp->cinfo.c))) status = 0;
+    switch (sp->jpegtablesmode & (JPEGTABLESMODE_HUFF|JPEGTABLESMODE_QUANT))
+      { register JHUFF_TBL *htbl;
+        register JQUANT_TBL *qtbl;
+
+        case 0                                       :
+          sp->cinfo.c.optimize_coding = TRUE;
+        case JPEGTABLESMODE_HUFF                     :
+          if (!CALLVJPEG(sp,jpeg_set_quality(&sp->cinfo.c,sp->jpegquality,FALSE)))
+            return 0;
+          if (qtbl = sp->cinfo.c.quant_tbl_ptrs[0]) qtbl->sent_table = FALSE;
+          if (qtbl = sp->cinfo.c.quant_tbl_ptrs[1]) qtbl->sent_table = FALSE;
+          goto L3;
+        case JPEGTABLESMODE_QUANT                    :
+          sp->cinfo.c.optimize_coding = TRUE;
+
+       /* We do not support application-supplied JPEG tables, so mark the field
+          "not present".
+       */
+      L3: TIFFClrFieldBit(tif,FIELD_JPEGTABLES);
+          break;
+        case JPEGTABLESMODE_HUFF|JPEGTABLESMODE_QUANT:
+          if (   !CALLVJPEG(sp,jpeg_set_quality(&sp->cinfo.c,sp->jpegquality,FALSE))
+              || !CALLVJPEG(sp,jpeg_suppress_tables(&sp->cinfo.c,TRUE))
+             )
+            {
+              status = 0;
+              break;
+            };
+          if (qtbl = sp->cinfo.c.quant_tbl_ptrs[0]) qtbl->sent_table = FALSE;
+          if (htbl = sp->cinfo.c.dc_huff_tbl_ptrs[0]) htbl->sent_table = FALSE;
+          if (htbl = sp->cinfo.c.ac_huff_tbl_ptrs[0]) htbl->sent_table = FALSE;
+          if (sp->cinfo.c.jpeg_color_space == JCS_YCbCr)
+            {
+              if (qtbl = sp->cinfo.c.quant_tbl_ptrs[1])
+                qtbl->sent_table = FALSE;
+              if (htbl = sp->cinfo.c.dc_huff_tbl_ptrs[1])
+                htbl->sent_table = FALSE;
+              if (htbl = sp->cinfo.c.ac_huff_tbl_ptrs[1])
+                htbl->sent_table = FALSE;
+            };
+          if (   TIFFojpeg_tables_dest(sp,tif)
+              && CALLVJPEG(sp,jpeg_write_tables(&sp->cinfo.c))
+             )
+            {
+    
+           /* Mark the field "present".  We can't use "TIFFSetField()" because
+              "BEENWRITING" is already set!
+           */
+              TIFFSetFieldBit(tif,FIELD_JPEGTABLES);
+              tif->tif_flags |= TIFF_DIRTYDIRECT;
+            }
+          else status = 0;
+      };
+    if (   sp->cinfo.c.raw_data_in
+        && !alloc_downsampled_buffers(tif,sp->cinfo.c.comp_info,
+                                      sp->cinfo.c.num_components)
+       ) status = 0;
+    if (status == 0) return 0; /* If TIFF errors, don't bother to continue */
+ /* Grab parameters that are same for all strips/tiles. */
+
+    sp->dest.init_destination = std_init_destination;
+    sp->dest.empty_output_buffer = std_empty_output_buffer;
+    sp->dest.term_destination = std_term_destination;
+    sp->cinfo.c.dest = &sp->dest;
+    sp->cinfo.c.data_precision = td->td_bitspersample;
+    sp->cinfo.c.write_JFIF_header = /* Don't write extraneous markers */
+    sp->cinfo.c.write_Adobe_marker = FALSE;
+    sp->cinfo.c.image_width = segment_width;
+    sp->cinfo.c.image_height = segment_height;
+    sp->cinfo.c.comp_info[0].h_samp_factor =
+    sp->cinfo.c.comp_info[0].v_samp_factor = 1;
+    return CALLVJPEG(sp,jpeg_start_compress(&sp->cinfo.c,FALSE));
+#   undef td
+  }
+
+static int
+OJPEGPreEncode(register TIFF *tif,tsample_t s)
+  { register OJPEGState *sp = OJState(tif);
+#   define td (&tif->tif_dir)
+
+ /* If we are about to write the first row of an image plane, which should
+    coincide with a JPEG "scan", reset the JPEG Library's compressor.  Otherwise
+    let the compressor run "as is" and return a "success" status without further
+    ado.
+ */
+    if (     (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip)
+           % td->td_stripsperimage
+        == 0
+       )
+      {
+        if (   (sp->cinfo.c.comp_info[0].component_id = s) == 1)
+            && sp->cinfo.c.jpeg_color_space == JCS_YCbCr
+           )
+          {
+            sp->cinfo.c.comp_info[0].quant_tbl_no =
+            sp->cinfo.c.comp_info[0].dc_tbl_no =
+            sp->cinfo.c.comp_info[0].ac_tbl_no = 1;
+            sp->cinfo.c.comp_info[0].h_samp_factor = sp->h_sampling;
+            sp->cinfo.c.comp_info[0].v_samp_factor = sp->v_sampling;
+    
+         /* Scale expected strip/tile size to match a downsampled component. */
+    
+            sp->cinfo.c.image_width = TIFFhowmany(segment_width,sp->h_sampling);
+            sp->cinfo.c.image_height=TIFFhowmany(segment_height,sp->v_sampling);
+          };
+        sp->scancount = 0; /* Mark subsampling buffer(s) empty */
+      };
+    return 1;
+#   undef td
+  }
+
+static int
+OJPEGPostEncode(register TIFF *tif)
+  { register OJPEGState *sp = OJState(tif);
+
+ /* Finish up at the end of a strip or tile. */
+
+    if (sp->scancount > 0) /* emit partial buffer of down-sampled data */
+      { JDIMENSION n;
+
+#       ifdef C_LOSSLESS_SUPPORTED
+        if (   sp->scancount < sp->cinfo.c.data_unit
+            && sp->cinfo.c.num_components > 0
+           )
+#       else
+        if (sp->scancount < DCTSIZE && sp->cinfo.c.num_components > 0)
+#       endif
+          { int ci = 0,                            /* Pad the data vertically */
+#           ifdef C_LOSSLESS_SUPPORTED
+                size = sp->cinfo.c.data_unit;
+#           else
+                size = DCTSIZE;
+#           endif
+            register jpeg_component_info *compptr = sp->cinfo.c.comp_info;
+
+            do
+#              ifdef C_LOSSLESS_SUPPORTED
+               { tsize_t row_width = compptr->width_in_data_units
+#              else
+                 tsize_t row_width = compptr->width_in_blocks
+#              endif
+                   *size*sizeof(JSAMPLE);
+                 int ypos = sp->scancount*compptr->v_samp_factor;
+
+                 do _TIFFmemcpy( (tdata_t)sp->ds_buffer[ci][ypos]
+                               , (tdata_t)sp->ds_buffer[ci][ypos-1]
+                               , row_width
+                               );
+                 while (++ypos < compptr->v_samp_factor*size);
+               }
+            while (++compptr,++ci < sp->cinfo.c.num_components);
+          };
+        n = sp->cinfo.c.max_v_samp_factor*size;
+        if (CALLJPEG(sp,-1,jpeg_write_raw_data(&sp->cinfo.c,sp->ds_buffer,n)) != n)
+          return 0;
+      };
+    return CALLVJPEG(sp,jpeg_finish_compress(&sp->cinfo.c));
+  }
+#endif /* never */
+
+/* JPEG Decoding begins here. */
+
+/*ARGSUSED*/ static int
+OJPEGDecode(register TIFF *tif,tidata_t buf,tsize_t cc,tsample_t s)
+  { tsize_t bytesperline = isTiled(tif)
+                         ? TIFFTileRowSize(tif)
+                         : tif->tif_scanlinesize,
+            rows;                          /* No. of unprocessed rows in file */
+    register OJPEGState *sp = OJState(tif);
+
+ /* Decode a chunk of pixels, where the input data has not NOT been down-
+    sampled, or else the TIFF Library's client has used the "JPEGColorMode" TIFF
+    pseudo-tag to request that the JPEG Library do color-space conversion; this
+    is the normal case.  The data is expected to be read in scan-line multiples,
+    and this subroutine is called for both pixel-interleaved and separate color
+    planes.
+
+    WARNING:  Unlike "OJPEGDecodeRawContig()", below, the no. of Bytes in each
+              decoded row is calculated here as "bytesperline" instead of
+    using "sp->bytesperline", which might be a little smaller.  This can
+    occur for an old tiled image whose width isn't a multiple of 8 pixels.
+    That's illegal according to the TIFF Version 6 specification, but some
+    test files, like "zackthecat.tif", were built that way.  In those cases,
+    we want to embed the image's true width in our caller's buffer (which is
+    presumably allocated according to the expected tile width) by
+    effectively "padding" it with unused Bytes at the end of each row.
+ */
+    if ( (cc /= bytesperline)      /* No. of complete rows in caller's buffer */
+       > (rows = sp->cinfo.d.output_height - sp->cinfo.d.output_scanline)
+       ) cc = rows;
+    while (--cc >= 0)
+      {
+        if (   CALLJPEG(sp,-1,jpeg_read_scanlines(&sp->cinfo.d,(JSAMPARRAY)&buf,1))
+            != 1
+           ) return 0;
+        buf += bytesperline;
+        ++tif->tif_row;
+      };
+
+ /* BEWARE OF KLUDGE:  If our input file was produced by Microsoft's Wang
+                       Imaging for Windows application, the DC coefficients of
+    each JPEG image component (Y,Cb,Cr) must be reset at the end of each TIFF
+    "strip", and any JPEG data bits remaining in the current Byte of the
+    decoder's input buffer must be discarded.  To do so, we create an "ad hoc"
+    interface in the "jdhuff.c" module of IJG JPEG Library Version 6 (module
+    "jdshuff.c", if Ken Murchison's lossless-Huffman patch is applied), and we
+    invoke that interface here after decoding each "strip".
+ */
+    if (sp->is_WANG) jpeg_reset_huff_decode(&sp->cinfo.d);
+    return 1;
+  }
+
+/*ARGSUSED*/ static int
+OJPEGDecodeRawContig(register TIFF *tif,tidata_t buf,tsize_t cc,tsample_t s)
+  { tsize_t rows;                          /* No. of unprocessed rows in file */
+    JDIMENSION lines_per_MCU, size;
+    register OJPEGState *sp = OJState(tif);
+
+ /* Decode a chunk of pixels, where the input data has pixel-interleaved color
+    planes, some of which have been down-sampled, but the TIFF Library's client
+    has NOT used the "JPEGColorMode" TIFF pseudo-tag to request that the JPEG
+    Library do color-space conversion.  In other words, we must up-sample/
+    expand/duplicate image components according to the image's sampling factors,
+    without changing its color space.  The data is expected to be read in scan-
+    line multiples.
+ */
+    if ( (cc /= sp->bytesperline)  /* No. of complete rows in caller's buffer */
+       > (rows = sp->cinfo.d.output_height - sp->cinfo.d.output_scanline)
+       ) cc = rows;
+    lines_per_MCU = sp->cinfo.d.max_v_samp_factor
+#   ifdef D_LOSSLESS_SUPPORTED
+                  * (size = sp->cinfo.d.min_codec_data_unit);
+#   else
+                  * (size = DCTSIZE);
+#   endif
+    while (--cc >= 0)
+      { int clumpoffset, ci;
+        register jpeg_component_info *compptr;
+
+        if (sp->scancount >= size) /* reload downsampled-data buffers */
+          {
+            if (   CALLJPEG(sp,-1,jpeg_read_raw_data(&sp->cinfo.d,sp->ds_buffer,lines_per_MCU))
+                != lines_per_MCU
+               ) return 0;
+            sp->scancount = 0;
+          };
+
+     /* The fastest way to separate the data is: make 1 pass over the scan
+        line for each row of each component.
+     */
+        clumpoffset = ci = 0;
+        compptr = sp->cinfo.d.comp_info;
+        do
+          { int ypos = 0;
+
+            if (compptr->h_samp_factor == 1) /* fast path */
+              do
+                { register JSAMPLE *inptr =
+                    sp->ds_buffer[ci][sp->scancount*compptr->v_samp_factor+ypos],
+                                   *outptr = (JSAMPLE *)buf + clumpoffset;
+                  register int clumps_per_line = compptr->downsampled_width;
+
+                  do *outptr = *inptr++;
+                  while ((outptr += sp->samplesperclump),--clumps_per_line > 0);
+                }
+              while ( (clumpoffset += compptr->h_samp_factor)
+                    , ++ypos < compptr->v_samp_factor
+                    );
+            else /* general case */
+              do
+                { register JSAMPLE *inptr =
+                    sp->ds_buffer[ci][sp->scancount*compptr->v_samp_factor+ypos],
+                                   *outptr = (JSAMPLE *)buf + clumpoffset;
+                  register int clumps_per_line = compptr->downsampled_width;
+
+                  do
+                    { register int xpos = 0;
+
+                      do outptr[xpos] = *inptr++;
+                      while (++xpos < compptr->h_samp_factor);
+                    }
+                  while ((outptr += sp->samplesperclump),--clumps_per_line > 0);
+                }
+              while ( (clumpoffset += compptr->h_samp_factor)
+                    , ++ypos < compptr->v_samp_factor
+                    );
+          }
+        while (++compptr,++ci < sp->cinfo.d.num_components);
+        ++sp->scancount;
+        buf += sp->bytesperline;
+        ++tif->tif_row;
+      };
+
+ /* BEWARE OF KLUDGE:  If our input file was produced by Microsoft's Wang
+                       Imaging for Windows application, the DC coefficients of
+    each JPEG image component (Y,Cb,Cr) must be reset at the end of each TIFF
+    "strip", and any JPEG data bits remaining in the current Byte of the
+    decoder's input buffer must be discarded.  To do so, we create an "ad hoc"
+    interface in the "jdhuff.c" module of IJG JPEG Library Version 6 (module
+    "jdshuff.c", if Ken Murchison's lossless-Huffman patch is applied), and we
+    invoke that interface here after decoding each "strip".
+ */
+    if (sp->is_WANG) jpeg_reset_huff_decode(&sp->cinfo.d);
+    return 1;
+  }
+
+/*ARGSUSED*/ static int
+OJPEGDecodeRawSeparate(TIFF *tif,register tidata_t buf,tsize_t cc,tsample_t s)
+  { tsize_t rows;                          /* No. of unprocessed rows in file */
+    JDIMENSION lines_per_MCU,
+               size,                                             /* ...of MCU */
+               v;                   /* Component's vertical up-sampling ratio */
+    register OJPEGState *sp = OJState(tif);
+    register jpeg_component_info *compptr = sp->cinfo.d.comp_info + s;
+
+ /* Decode a chunk of pixels, where the input data has separate color planes,
+    some of which have been down-sampled, but the TIFF Library's client has NOT
+    used the "JPEGColorMode" TIFF pseudo-tag to request that the JPEG Library
+    do color-space conversion.  The data is expected to be read in scan-line
+    multiples.
+ */
+    v = sp->cinfo.d.max_v_samp_factor/compptr->v_samp_factor;
+    if ( (cc /= compptr->downsampled_width) /* No. of rows in caller's buffer */
+       > (rows = (sp->cinfo.d.output_height-sp->cinfo.d.output_scanline+v-1)/v)
+       ) cc = rows; /* No. of rows of "clumps" to read */
+    lines_per_MCU = sp->cinfo.d.max_v_samp_factor
+#   ifdef D_LOSSLESS_SUPPORTED
+                  * (size = sp->cinfo.d.min_codec_data_unit);
+#   else
+                  * (size = DCTSIZE);
+#   endif
+ L: if (sp->scancount >= size) /* reload downsampled-data buffers */
+      {
+        if (   CALLJPEG(sp,-1,jpeg_read_raw_data(&sp->cinfo.d,sp->ds_buffer,lines_per_MCU))
+            != lines_per_MCU
+           ) return 0;
+        sp->scancount = 0;
+      };
+    rows = 0;
+    do
+      { register JSAMPLE *inptr =
+          sp->ds_buffer[s][sp->scancount*compptr->v_samp_factor + rows];
+        register int clumps_per_line = compptr->downsampled_width;
+
+        do *buf++ = *inptr++; while (--clumps_per_line > 0); /* Copy scanline */
+        tif->tif_row += v;
+        if (--cc <= 0) return 1; /* End of caller's buffer? */
+      }
+    while (++rows < compptr->v_samp_factor);
+    ++sp->scancount;
+    goto L;
+  }
+
+/* "OJPEGSetupDecode()" temporarily forces the JPEG Library to use the following
+   subroutine as a "dummy" input reader in order to fool the library into
+   thinking that it has read the image's first "Start of Scan" (SOS) marker, so
+   that it initializes accordingly.
+*/
+/*ARGSUSED*/ METHODDEF(int)
+fake_SOS_marker(j_decompress_ptr cinfo){return JPEG_REACHED_SOS;}
+
+/*ARGSUSED*/ METHODDEF(int)
+suspend(j_decompress_ptr cinfo){return JPEG_SUSPENDED;}
+
+/* The JPEG Library's "null" color-space converter actually re-packs separate
+   color planes (it's native image representation) into a pixel-interleaved,
+   contiguous plane.  But if our TIFF Library client is tryng to process a
+   PLANARCONFIG_SEPARATE image, we don't want that; so here are modifications of
+   code in the JPEG Library's "jdcolor.c" file, which simply copy Bytes to a
+   color plane specified by the current JPEG "scan".
+*/
+METHODDEF(void)
+ycc_rgb_convert(register j_decompress_ptr cinfo,JSAMPIMAGE in,JDIMENSION row,
+                register JSAMPARRAY out,register int nrows)
+  { typedef struct                /* "jdcolor.c" color-space conversion state */
+      {
+
+     /* WARNING:  This declaration is ugly and dangerous!  It's supposed to be
+                  private to the JPEG Library's "jdcolor.c" module, but we also
+        need it here.  Since the library's copy might change without notice, be
+        sure to keep this one synchronized or the following code will break!
+     */
+        struct jpeg_color_deconverter pub; /* Public fields */
+     /* Private state for YCC->RGB conversion */
+        int *Cr_r_tab,   /* ->Cr to R conversion table */
+            *Cb_b_tab;   /* ->Cb to B conversion table */
+        INT32 *Cr_g_tab, /* ->Cr to G conversion table */
+              *Cb_g_tab; /* ->Cb to G conversion table */
+      } *my_cconvert_ptr;
+    my_cconvert_ptr cconvert = (my_cconvert_ptr)cinfo->cconvert;
+    JSAMPARRAY irow0p = in[0] + row;
+    register JSAMPLE *range_limit = cinfo->sample_range_limit;
+    register JSAMPROW outp, Y;
+
+    switch (cinfo->output_scan_number - 1)
+      { JSAMPARRAY irow1p, irow2p;
+        register INT32 *table0, *table1;
+        SHIFT_TEMPS
+
+        case RGB_RED  : irow2p = in[2] + row;
+                        table0 = (INT32 *)cconvert->Cr_r_tab;
+                        while (--nrows >= 0)
+                          { register JSAMPROW Cr = *irow2p++;
+                             register int i = cinfo->output_width;
+
+                             Y = *irow0p++;
+                             outp = *out++;
+                             while (--i >= 0)
+                               *outp++ = range_limit[*Y++ + table0[*Cr++]];
+                          };
+                        return;
+        case RGB_GREEN: irow1p = in[1] + row;
+                        irow2p = in[2] + row;
+                        table0 = cconvert->Cb_g_tab;
+                        table1 = cconvert->Cr_g_tab;
+                        while (--nrows >= 0)
+                          { register JSAMPROW Cb = *irow1p++,
+                                              Cr = *irow2p++;
+                             register int i = cinfo->output_width;
+
+                             Y = *irow0p++;
+                             outp = *out++;
+                             while (--i >= 0)
+                               *outp++ =
+                                 range_limit[ *Y++
+                                            + RIGHT_SHIFT(table0[*Cb++]+table1[*Cr++],16)
+                                            ];
+                          };
+                        return;
+        case RGB_BLUE : irow1p = in[1] + row;
+                        table0 = (INT32 *)cconvert->Cb_b_tab;
+                        while (--nrows >= 0)
+                          { register JSAMPROW Cb = *irow1p++;
+                             register int i = cinfo->output_width;
+
+                             Y = *irow0p++;
+                             outp = *out++;
+                             while (--i >= 0)
+                               *outp++ = range_limit[*Y++ + table0[*Cb++]];
+                          }
+      }
+  }
+
+METHODDEF(void)
+null_convert(register j_decompress_ptr cinfo,JSAMPIMAGE in,JDIMENSION row,
+             register JSAMPARRAY out,register int nrows)
+  { register JSAMPARRAY irowp = in[cinfo->output_scan_number - 1] + row;
+
+    while (--nrows >= 0) _TIFFmemcpy(*out++,*irowp++,cinfo->output_width);
+  }
+
+static int
+OJPEGSetupDecode(register TIFF *tif)
+  { static char module[]={"OJPEGSetupDecode"};
+    J_COLOR_SPACE jpeg_color_space,   /* Color space of JPEG-compressed image */
+                  out_color_space;       /* Color space of decompressed image */
+    uint32 segment_width;
+    int status = 1;                              /* Assume success by default */
+    boolean downsampled_output=FALSE, /* <=> Want JPEG Library's "raw" image? */
+            is_JFIF;                                       /* <=> JFIF image? */
+    register OJPEGState *sp = OJState(tif);
+#   define td (&tif->tif_dir)
+
+ /* Verify miscellaneous parameters.  This will need work if the TIFF Library
+    ever supports different depths for different components, or if the JPEG
+    Library ever supports run-time depth selection.  Neither seems imminent.
+ */
+    if (td->td_bitspersample != sp->cinfo.d.data_precision)
+      {
+        TIFFError(module,bad_bps,td->td_bitspersample);
+        status = 0;
+      };
+
+ /* The TIFF Version 6.0 specification and IJG JPEG Library accept different
+    sets of color spaces, so verify that our image belongs to the common subset
+    and map its photometry code, then initialize to handle subsampling and
+    optional JPEG Library YCbCr <-> RGB color-space conversion.
+ */
+    switch (td->td_photometric)
+      {
+        case PHOTOMETRIC_YCBCR     :
+
+       /* ISO IS 10918-1 requires that JPEG subsampling factors be 1-4, but
+          TIFF Version 6.0 is more restrictive: only 1, 2, and 4 are allowed.
+       */
+          if (   (   td->td_ycbcrsubsampling[0] == 1
+                  || td->td_ycbcrsubsampling[0] == 2
+                  || td->td_ycbcrsubsampling[0] == 4
+                 )
+              && (   td->td_ycbcrsubsampling[1] == 1
+                  || td->td_ycbcrsubsampling[1] == 2
+                  || td->td_ycbcrsubsampling[1] == 4
+                 )
+             )
+            downsampled_output =
+              (
+                (sp->h_sampling = td->td_ycbcrsubsampling[0]) << 3
+              | (sp->v_sampling = td->td_ycbcrsubsampling[1])
+              ) != 011;
+          else
+            {
+              TIFFError(module,bad_subsampling);
+              status = 0;
+            };
+          jpeg_color_space = JCS_YCbCr;
+          if (sp->jpegcolormode == JPEGCOLORMODE_RGB)
+            {
+              downsampled_output = FALSE;
+              out_color_space = JCS_RGB;
+              break;
+            };
+          goto L2;
+        case PHOTOMETRIC_MINISBLACK:
+          jpeg_color_space = JCS_GRAYSCALE;
+          goto L1;
+        case PHOTOMETRIC_RGB       :
+          jpeg_color_space = JCS_RGB;
+          goto L1;
+        case PHOTOMETRIC_SEPARATED :
+          jpeg_color_space = JCS_CMYK;
+      L1: sp->jpegcolormode = JPEGCOLORMODE_RAW; /* No JPEG Lib. conversion */
+      L2: out_color_space = jpeg_color_space;
+          break;
+        default                    :
+          TIFFError(module,bad_photometry,td->td_photometric);
+          status = 0;
+      };
+    if (status == 0) return 0; /* If TIFF errors, don't bother to continue */
+
+ /* Set parameters that are same for all strips/tiles. */
+
+    sp->cinfo.d.src = &sp->src;
+    sp->src.init_source = std_init_source;
+    sp->src.fill_input_buffer = std_fill_input_buffer;
+    sp->src.skip_input_data = std_skip_input_data;
+    sp->src.resync_to_restart = jpeg_resync_to_restart;
+    sp->src.term_source = std_term_source;
+
+ /* BOGOSITY ALERT!  The Wang Imaging application for Microsoft Windows produces
+                     images containing "JPEGInterchangeFormat[Length]" TIFF
+    records that resemble JFIF-in-TIFF encapsulations but, in fact, violate the
+    TIFF Version 6 specification in several ways; nevertheless, we try to handle
+    them gracefully because there are apparently a lot of them around.  The
+    purported "JFIF" data stream in one of these files vaguely resembles a JPEG
+    "tables only" data stream, except that there's no trailing EOI marker.  The
+    rest of the JPEG data stream lies in a discontiguous file region, identified
+    by the 0th Strip offset (which is *also* illegal!), where it begins with an
+    SOS marker and apparently continues to the end of the file.  There is no
+    trailing EOI marker here, either.
+ */
+    is_JFIF = !sp->is_WANG && TIFFFieldSet(tif,FIELD_JPEGIFOFFSET);
+
+ /* Initialize decompression parameters that won't be overridden by JPEG Library
+    defaults set during the "jpeg_read_header()" call, below.
+ */
+    segment_width = td->td_imagewidth;
+    if (isTiled(tif))
+      {
+        if (sp->is_WANG) /* we don't know how to handle it */
+          {
+            TIFFError(module,"Tiled Wang image not supported");
+            return 0;
+          };
+
+     /* BOGOSITY ALERT!  "TIFFTileRowSize()" seems to work fine for modern JPEG-
+                         in-TIFF encapsulations where the image width--like the
+        tile width--is a multiple of 8 or 16 pixels.  But image widths and
+        heights are aren't restricted to 8- or 16-bit multiples, and we need
+        the exact Byte count of decompressed scan lines when we call the JPEG
+        Library.  At least one old file ("zackthecat.tif") in the TIFF Library
+        test suite has widths and heights slightly less than the tile sizes, and
+        it apparently used the bogus computation below to determine the number
+        of Bytes per scan line (was this due to an old, broken version of
+        "TIFFhowmany()"?).  Before we get here, "OJPEGSetupDecode()" verified
+        that our image uses 8-bit samples, so the following check appears to
+        return the correct answer in all known cases tested to date.
+     */
+        if (is_JFIF || (segment_width & 7) == 0)
+          sp->bytesperline = TIFFTileRowSize(tif); /* Normal case */
+        else
+          {
+            /* Was the file-encoder's segment-width calculation bogus? */
+            segment_width = (segment_width/sp->h_sampling + 1) * sp->h_sampling;
+            sp->bytesperline = segment_width * td->td_samplesperpixel;
+          }
+      }
+    else sp->bytesperline = TIFFVStripSize(tif,1);
+
+ /* BEWARE OF KLUDGE:  If we have JPEG Interchange File Format (JFIF) image,
+                       then we want to read "metadata" in the bit-stream's
+    header and validate it against corresponding information in TIFF records.
+    But if we have a *really old* JPEG file that's not JFIF, then we simply
+    assign TIFF-record values to JPEG Library variables without checking.
+ */
+    if (is_JFIF) /* JFIF image */
+      { unsigned char *end_of_data;
+        int subsampling_factors;
+        register unsigned char *p;
+        register int i;
+
+     /* WARNING:  Although the image file contains a JFIF bit stream, it might
+                  also contain some old TIFF records causing "OJPEGVSetField()"
+        to have allocated quantization or Huffman decoding tables.  But when the
+        JPEG Library reads and parses the JFIF header below, it reallocate these
+        tables anew without checking for "dangling" pointers, thereby causing a
+        memory "leak".  We have enough information to potentially deallocate the
+        old tables here, but unfortunately JPEG Library Version 6B uses a "pool"
+        allocator for small objects, with no deallocation procedure; instead, it
+        reclaims a whole pool when an image is closed/destroyed, so well-behaved
+        TIFF client applications (i.e., those which close their JPEG images as
+        soon as they're no longer needed) will waste memory for a short time but
+        recover it eventually.  But ill-behaved TIFF clients (i.e., those which
+        keep many JPEG images open gratuitously) can exhaust memory prematurely.
+        If the JPEG Library ever implements a deallocation procedure, insert
+        this clean-up code:
+     */
+#       ifdef someday
+        if (sp->jpegtablesmode & JPEGTABLESMODE_QUANT) /* free quant. tables */
+          { register int i = 0;
+
+            do
+              { register JQUANT_TBL *q;
+
+                if (q = sp->cinfo.d.quant_tbl_ptrs[i])
+                  {
+                    jpeg_free_small(&sp->cinfo.comm,q,sizeof *q);
+                    sp->cinfo.d.quant_tbl_ptrs[i] = 0;
+                  }
+              }
+            while (++i < NUM_QUANT_TBLS);
+          };
+        if (sp->jpegtablesmode & JPEGTABLESMODE_HUFF) /* free Huffman tables */
+          { register int i = 0;
+
+            do
+              { register JHUFF_TBL *h;
+
+                if (h = sp->cinfo.d.dc_huff_tbl_ptrs[i])
+                  {
+                    jpeg_free_small(&sp->cinfo.comm,h,sizeof *h);
+                    sp->cinfo.d.dc_huff_tbl_ptrs[i] = 0;
+                  };
+                if (h = sp->cinfo.d.ac_huff_tbl_ptrs[i])
+                  {
+                    jpeg_free_small(&sp->cinfo.comm,h,sizeof *h);
+                    sp->cinfo.d.ac_huff_tbl_ptrs[i] = 0;
+                  }
+              }
+            while (++i < NUM_HUFF_TBLS);
+          };
+#       endif /* someday */
+
+     /* Since we might someday wish to try rewriting "old format" JPEG-in-TIFF
+        encapsulations in "new format" files, try to synthesize the value of a
+        modern "JPEGTables" TIFF record by scanning the JPEG data from just past
+        the "Start of Information" (SOI) marker until something other than a
+        legitimate "table" marker is found, as defined in ISO IS 10918-1
+        Appending B.2.4; namely:
+
+        -- Define Quantization Table (DQT)
+        -- Define Huffman Table (DHT)
+        -- Define Arithmetic Coding table (DAC)
+        -- Define Restart Interval (DRI)
+        -- Comment (COM)
+        -- Application data (APPn)
+
+        For convenience, we also accept "Expansion" (EXP) markers, although they
+        are apparently not a part of normal "table" data.
+     */
+        sp->jpegtables = p = (unsigned char *)sp->src.next_input_byte;
+        end_of_data = p + sp->src.bytes_in_buffer;
+        p += 2;
+        while (p < end_of_data && p[0] == 0xFF)
+          switch (p[1])
+            {
+              default  : goto L;
+              case 0xC0: /* SOF0  */
+              case 0xC1: /* SOF1  */
+              case 0xC2: /* SOF2  */
+              case 0xC3: /* SOF3  */
+              case 0xC4: /* DHT   */
+              case 0xC5: /* SOF5  */
+              case 0xC6: /* SOF6  */
+              case 0xC7: /* SOF7  */
+              case 0xC9: /* SOF9  */
+              case 0xCA: /* SOF10 */
+              case 0xCB: /* SOF11 */
+              case 0xCC: /* DAC   */
+              case 0xCD: /* SOF13 */
+              case 0xCE: /* SOF14 */
+              case 0xCF: /* SOF15 */
+              case 0xDB: /* DQT   */
+              case 0xDD: /* DRI   */
+              case 0xDF: /* EXP   */
+              case 0xE0: /* APP0  */
+              case 0xE1: /* APP1  */
+              case 0xE2: /* APP2  */
+              case 0xE3: /* APP3  */
+              case 0xE4: /* APP4  */
+              case 0xE5: /* APP5  */
+              case 0xE6: /* APP6  */
+              case 0xE7: /* APP7  */
+              case 0xE8: /* APP8  */
+              case 0xE9: /* APP9  */
+              case 0xEA: /* APP10 */
+              case 0xEB: /* APP11 */
+              case 0xEC: /* APP12 */
+              case 0xED: /* APP13 */
+              case 0xEE: /* APP14 */
+              case 0xEF: /* APP15 */
+              case 0xFE: /* COM   */
+                         p += (p[2] << 8 | p[3]) + 2;
+            };
+     L: if (p - (unsigned char *)sp->jpegtables > 2) /* fake "JPEGTables" */
+          {
+
+         /* In case our client application asks, pretend that this image file
+            contains a modern "JPEGTables" TIFF record by copying to a buffer
+            the initial part of the JFIF bit-stream that we just scanned, from
+            the SOI marker through the "metadata" tables, then append an EOI
+            marker and flag the "JPEGTables" TIFF record as "present".
+         */
+            sp->jpegtables_length = p - (unsigned char*)sp->jpegtables + 2;
+            p = sp->jpegtables;
+            if (!(sp->jpegtables = _TIFFmalloc(sp->jpegtables_length)))
+              {
+                TIFFError(module,no_jtable_space);
+                return 0;
+              };
+            _TIFFmemcpy(sp->jpegtables,p,sp->jpegtables_length-2);
+            p = (unsigned char *)sp->jpegtables + sp->jpegtables_length;
+            p[-2] = 0xFF; p[-1] = JPEG_EOI; /* Append EOI marker */
+            TIFFSetFieldBit(tif,FIELD_JPEGTABLES);
+            tif->tif_flags |= TIFF_DIRTYDIRECT;
+          }
+        else sp->jpegtables = 0; /* Don't simulate "JPEGTables" */
+        if (   CALLJPEG(sp,-1,jpeg_read_header(&sp->cinfo.d,TRUE))
+            != JPEG_HEADER_OK
+           ) return 0;
+        if (   sp->cinfo.d.image_width  != segment_width
+            || sp->cinfo.d.image_height != td->td_imagelength 
+           )
+          {
+            TIFFError(module,"Improper JPEG strip/tile size");
+            return 0;
+          };
+        if (sp->cinfo.d.num_components != td->td_samplesperpixel)
+          {
+            TIFFError(module,"Improper JPEG component count");
+            return 0;
+          };
+        if (sp->cinfo.d.data_precision != td->td_bitspersample)
+          {
+            TIFFError(module,"Improper JPEG data precision");
+            return 0;
+          };
+
+     /* Check that JPEG image components all have the same subsampling factors
+        declared (or defaulted) in the TIFF file, since TIFF Version 6.0 is more
+        restrictive than JPEG:  Only the 0th component may have horizontal and
+        vertical subsampling factors other than <1,1>.
+     */
+        subsampling_factors = sp->h_sampling << 3 | sp->v_sampling;
+        i = 0;
+        do
+          {
+            if (   ( sp->cinfo.d.comp_info[i].h_samp_factor << 3
+                   | sp->cinfo.d.comp_info[i].v_samp_factor
+                   )
+                != subsampling_factors
+               )
+              {
+                TIFFError(module,"Improper JPEG subsampling factors");
+                return 0;
+              };
+            subsampling_factors = 011; /* Required for image components > 0 */
+          }
+        while (++i < sp->cinfo.d.num_components);
+      }
+    else /* not JFIF image */
+      { int (*save)(j_decompress_ptr cinfo) = sp->cinfo.d.marker->read_markers;
+        register int i;
+
+     /* We're not assuming that this file's JPEG bit stream has any header
+        "metadata", so fool the JPEG Library into thinking that we read a
+        "Start of Input" (SOI) marker and a "Start of Frame" (SOFx) marker, then
+        force it to read a simulated "Start of Scan" (SOS) marker when we call
+        "jpeg_read_header()" below.  This should cause the JPEG Library to
+        establish reasonable defaults.
+     */
+        sp->cinfo.d.marker->saw_SOI =       /* Pretend we saw SOI marker */
+        sp->cinfo.d.marker->saw_SOF = TRUE; /* Pretend we saw SOF marker */
+        sp->cinfo.d.marker->read_markers =
+          sp->is_WANG ? suspend : fake_SOS_marker;
+        sp->cinfo.d.global_state = DSTATE_INHEADER;
+        sp->cinfo.d.Se = DCTSIZE2-1; /* Suppress JPEG Library warning */
+        sp->cinfo.d.image_width  = segment_width;
+        sp->cinfo.d.image_height = td->td_imagelength;
+
+     /* The following color-space initialization, including the complicated
+        "switch"-statement below, essentially duplicates the logic used by the
+        JPEG Library's "jpeg_init_colorspace()" subroutine during compression.
+     */
+        sp->cinfo.d.num_components = td->td_samplesperpixel;
+        sp->cinfo.d.comp_info = (jpeg_component_info *)
+          (*sp->cinfo.d.mem->alloc_small)
+            ( &sp->cinfo.comm
+            , JPOOL_IMAGE
+            , sp->cinfo.d.num_components * sizeof *sp->cinfo.d.comp_info
+            );
+        i = 0;
+        do
+          {
+            sp->cinfo.d.comp_info[i].component_index = i;
+            sp->cinfo.d.comp_info[i].component_needed = TRUE;
+            sp->cinfo.d.cur_comp_info[i] = &sp->cinfo.d.comp_info[i];
+          }
+        while (++i < sp->cinfo.d.num_components);
+        switch (jpeg_color_space)
+          {
+            case JCS_UNKNOWN  :
+              i = 0;
+              do
+                {
+                  sp->cinfo.d.comp_info[i].component_id = i;
+                  sp->cinfo.d.comp_info[i].h_samp_factor =
+                  sp->cinfo.d.comp_info[i].v_samp_factor = 1;
+                }
+              while (++i < sp->cinfo.d.num_components);
+              break;
+            case JCS_GRAYSCALE:
+              sp->cinfo.d.comp_info[0].component_id =
+              sp->cinfo.d.comp_info[0].h_samp_factor =
+              sp->cinfo.d.comp_info[0].v_samp_factor = 1;
+              break;
+            case JCS_RGB      :
+              sp->cinfo.d.comp_info[0].component_id = 'R';
+              sp->cinfo.d.comp_info[1].component_id = 'G';
+              sp->cinfo.d.comp_info[2].component_id = 'B';
+              i = 0;
+              do sp->cinfo.d.comp_info[i].h_samp_factor =
+                 sp->cinfo.d.comp_info[i].v_samp_factor = 1;
+              while (++i < sp->cinfo.d.num_components);
+              break;
+            case JCS_CMYK     :
+              sp->cinfo.d.comp_info[0].component_id = 'C';
+              sp->cinfo.d.comp_info[1].component_id = 'M';
+              sp->cinfo.d.comp_info[2].component_id = 'Y';
+              sp->cinfo.d.comp_info[3].component_id = 'K';
+              i = 0;
+              do sp->cinfo.d.comp_info[i].h_samp_factor =
+                 sp->cinfo.d.comp_info[i].v_samp_factor = 1;
+              while (++i < sp->cinfo.d.num_components);
+              break;
+            case JCS_YCbCr    :
+              i = 0;
+              do
+                {
+                  sp->cinfo.d.comp_info[i].component_id = i+1;
+                  sp->cinfo.d.comp_info[i].h_samp_factor =
+                  sp->cinfo.d.comp_info[i].v_samp_factor = 1;
+                  sp->cinfo.d.comp_info[i].quant_tbl_no =
+                  sp->cinfo.d.comp_info[i].dc_tbl_no =
+                  sp->cinfo.d.comp_info[i].ac_tbl_no = i > 0;
+                }
+              while (++i < sp->cinfo.d.num_components);
+              sp->cinfo.d.comp_info[0].h_samp_factor = sp->h_sampling;
+              sp->cinfo.d.comp_info[0].v_samp_factor = sp->v_sampling;
+          };
+        sp->cinfo.d.comps_in_scan = td->td_planarconfig == PLANARCONFIG_CONTIG
+                                  ? sp->cinfo.d.num_components
+                                  : 1;
+        i = CALLJPEG(sp,-1,jpeg_read_header(&sp->cinfo.d,!sp->is_WANG));
+        sp->cinfo.d.marker->read_markers = save; /* Restore input method */
+        if (sp->is_WANG) /* produced by Wang Imaging on Microsoft Windows */
+          {
+            if (i != JPEG_SUSPENDED) return 0;
+
+         /* BOGOSITY ALERT!  Files prooduced by the Wang Imaging application for
+                             Microsoft Windows are a special--and, technically
+            illegal--case.  A JPEG SOS marker and rest of the data stream should
+            be located at the end of the file, in a position identified by the
+            0th Strip offset.
+         */
+            i = td->td_nstrips - 1;
+            sp->src.next_input_byte = tif->tif_base + td->td_stripoffset[0];
+            sp->src.bytes_in_buffer = td->td_stripoffset[i] -
+              td->td_stripoffset[0] + td->td_stripbytecount[i];
+            i = CALLJPEG(sp,-1,jpeg_read_header(&sp->cinfo.d,TRUE));
+          };
+        if (i != JPEG_HEADER_OK) return 0;
+      };
+
+ /* Some of our initialization must wait until the JPEG Library is initialized
+    above, in order to override its defaults.
+ */
+    if (   (sp->cinfo.d.raw_data_out = downsampled_output)
+        && !alloc_downsampled_buffers(tif,sp->cinfo.d.comp_info,
+                                      sp->cinfo.d.num_components)
+       ) return 0;
+    sp->cinfo.d.jpeg_color_space = jpeg_color_space;
+    sp->cinfo.d.out_color_space = out_color_space;
+    sp->cinfo.d.dither_mode = JDITHER_NONE; /* Reduce image "noise" */
+    sp->cinfo.d.two_pass_quantize = FALSE;
+
+ /* If the image consists of separate, discontiguous TIFF "samples" (= color
+    planes, hopefully = JPEG "scans"), then we must use the JPEG Library's
+    "buffered image" mode to decompress the entire image into temporary buffers,
+    because the JPEG Library must parse the entire JPEG bit-stream in order to
+    be satsified that it has a complete set of color components for each pixel,
+    but the TIFF Library must allow our client to extract 1 component at a time.
+    Initializing the JPEG Library's "buffered image" mode is tricky:  First, we
+    start its decompressor, then we tell the decompressor to "consume" (i.e.,
+    buffer) the entire bit-stream.
+
+    WARNING:  Disabling "fancy" up-sampling seems to slightly reduce "noise" for
+              certain old Wang Imaging files, but it absolutely *must* be
+    enabled if the image has separate color planes, since in that case, the JPEG
+    Library doesn't use an "sp->cinfo.d.cconvert" structure (so de-referencing
+    this pointer below will cause a fatal crash) but writing our own code to up-
+    sample separate color planes is too much work for right now.  Maybe someday?
+ */
+    sp->cinfo.d.do_fancy_upsampling = /* Always let this default (to TRUE)? */
+    sp->cinfo.d.buffered_image = td->td_planarconfig == PLANARCONFIG_SEPARATE;
+    if (!CALLJPEG(sp,0,jpeg_start_decompress(&sp->cinfo.d))) return 0;
+    if (sp->cinfo.d.buffered_image) /* separate color planes */
+      {
+        if (sp->cinfo.d.raw_data_out)
+          tif->tif_decoderow = tif->tif_decodestrip = tif->tif_decodetile =
+            OJPEGDecodeRawSeparate;
+        else
+          {
+            tif->tif_decoderow = tif->tif_decodestrip = tif->tif_decodetile =
+              OJPEGDecode;
+
+         /* In JPEG Library Version 6B, color-space conversion isn't implemented
+            for separate color planes, so we must do it ourself if our TIFF
+            client doesn't want to:
+         */
+            sp->cinfo.d.cconvert->color_convert =
+              sp->cinfo.d.jpeg_color_space == sp->cinfo.d.out_color_space
+              ? null_convert : ycc_rgb_convert;
+          };
+    L3: switch (CALLJPEG(sp,0,jpeg_consume_input(&sp->cinfo.d)))
+          {
+            default              : goto L3;
+
+         /* If no JPEG "End of Information" (EOI) marker is found when bit-
+            stream parsing ends, check whether we have enough data to proceed
+            before reporting an error.
+         */
+            case JPEG_SUSPENDED  : if (  sp->cinfo.d.input_scan_number
+                                        *sp->cinfo.d.image_height
+                                       + sp->cinfo.d.input_iMCU_row
+                                        *sp->cinfo.d.max_v_samp_factor
+#                                       ifdef D_LOSSLESS_SUPPORTED
+                                        *sp->cinfo.d.data_units_in_MCU
+                                        *sp->cinfo.d.min_codec_data_unit
+#                                       else
+                                        *sp->cinfo.d.blocks_in_MCU
+                                        *DCTSIZE
+#                                       endif
+                                      < td->td_samplesperpixel
+                                       *sp->cinfo.d.image_height
+                                      )
+                                     {
+                                       TIFFError(tif->tif_name,
+                                         "Premature end of JPEG bit-stream");
+                                       return 0;
+                                     }
+            case JPEG_REACHED_EOI: ;
+          }
+      }
+    else /* pixel-interleaved color planes */
+      tif->tif_decoderow = tif->tif_decodestrip = tif->tif_decodetile =
+        downsampled_output ? OJPEGDecodeRawContig : OJPEGDecode;
+    return 1;
+#   undef td
+  }
+
+static int
+OJPEGPreDecode(register TIFF *tif,tsample_t s)
+  { register OJPEGState *sp = OJState(tif);
+#   define td (&tif->tif_dir)
+
+ /* If we are about to read the first row of an image plane (hopefully, these
+    are coincident with JPEG "scans"!), reset the JPEG Library's decompressor
+    appropriately.  Otherwise, let the decompressor run "as is" and return a
+    "success" status without further ado.
+ */
+    if (     (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip)
+           % td->td_stripsperimage
+        == 0
+       )
+      {
+        if (   sp->cinfo.d.buffered_image
+            && !CALLJPEG(sp,0,jpeg_start_output(&sp->cinfo.d,s+1))
+           ) return 0;
+        sp->cinfo.d.output_scanline = 0;
+
+     /* Mark subsampling buffers "empty". */
+
+#       ifdef D_LOSSLESS_SUPPORTED
+        sp->scancount = sp->cinfo.d.min_codec_data_unit;
+#       else
+        sp->scancount = DCTSIZE;
+#       endif
+      };
+    return 1;
+#   undef td
+  }
+
+/*ARGSUSED*/ static void
+OJPEGPostDecode(register TIFF *tif,tidata_t buf,tsize_t cc)
+  { register OJPEGState *sp = OJState(tif);
+#   define td (&tif->tif_dir)
+
+ /* The JPEG Library decompressor has reached the end of a strip/tile.  If this
+    is the end of a TIFF image "sample" (= JPEG "scan") in a file with separate
+    components (color planes), then end the "scan".  If it ends the image's last
+    sample/scan, then also stop the JPEG Library's decompressor.
+ */
+    if (sp->cinfo.d.output_scanline >= sp->cinfo.d.output_height)
+      {
+        if (sp->cinfo.d.buffered_image)
+          CALLJPEG(sp,-1,jpeg_finish_output(&sp->cinfo.d)); /* End JPEG scan */
+        if (   (isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip)
+            >= td->td_nstrips-1
+           ) CALLJPEG(sp,0,jpeg_finish_decompress(&sp->cinfo.d));
+      }
+#   undef td
+  }
+
+static int
+OJPEGVSetField(register TIFF *tif,ttag_t tag,va_list ap)
+{
+    uint32 v32;
+    register OJPEGState *sp = OJState(tif);
+#   define td (&tif->tif_dir)
+    toff_t tiffoff=0;
+    uint32 bufoff=0;
+    uint32 code_count=0;
+    int i2=0;
+    int k2=0;
+
+    switch (tag)
+      {
+        default                            : return
+                                               (*sp->vsetparent)(tif,tag,ap);
+
+     /* BEWARE OF KLUDGE:  Some old-format JPEG-in-TIFF files, including those
+                           produced by the Wang Imaging application for Micro-
+        soft Windows, illegally omit a "ReferenceBlackWhite" TIFF tag, even
+        though the TIFF specification's default is intended for the RGB color
+        space and is inappropriate for the YCbCr color space ordinarily used for
+        JPEG images.  Since many TIFF client applications request the value of
+        this tag immediately after a TIFF image directory is parsed, and before
+        any other code in this module receives control, we are forced to fix
+        this problem very early in image-file processing.  Fortunately, legal
+        TIFF files are supposed to store their tags in numeric order, so a
+        mandatory "PhotometricInterpretation" tag should always appear before
+        an optional "ReferenceBlackWhite" tag.  Hence, we slyly peek ahead when
+        we discover the desired photometry, by installing modified black and
+        white reference levels.
+     */
+        case TIFFTAG_PHOTOMETRIC           :
+          if (   (v32 = (*sp->vsetparent)(tif,tag,ap))
+              && td->td_photometric == PHOTOMETRIC_YCBCR
+             )
+	  {
+		float *ref;
+		if (!TIFFGetField(tif, TIFFTAG_REFERENCEBLACKWHITE, &ref)) {
+			float refbw[6];
+			long top = 1L << td->td_bitspersample;
+			refbw[0] = 0;
+			refbw[1] = (float)(top-1L);
+			refbw[2] = (float)(top>>1);
+			refbw[3] = refbw[1];
+			refbw[4] = refbw[2];
+			refbw[5] = refbw[1];
+			TIFFSetField(tif, TIFFTAG_REFERENCEBLACKWHITE, refbw);
+		}
+	  }
+          return v32;
+
+     /* BEWARE OF KLUDGE:  According to Charles Auer <Bumble731@msn.com>, if our
+                           input is a multi-image (multi-directory) JPEG-in-TIFF
+        file is produced by the Wang Imaging application on Microsoft Windows,
+        for some reason the first directory excludes the vendor-specific "WANG
+        PageControl" tag (32934) that we check below, so the only other way to
+        identify these directories is apparently to look for a software-
+        identification tag with the substring, "Wang Labs".  Single-image files
+        can apparently pass both tests, which causes no harm here, but what a
+        mess this is!
+     */
+        case TIFFTAG_SOFTWARE              :
+        {
+            char *software;
+
+            v32 = (*sp->vsetparent)(tif,tag,ap);
+            if( TIFFGetField( tif, TIFFTAG_SOFTWARE, &software )
+                && strstr( software, "Wang Labs" ) )
+                sp->is_WANG = 1;
+            return v32;
+        }
+
+        case TIFFTAG_JPEGPROC              :
+        case TIFFTAG_JPEGIFOFFSET          :
+        case TIFFTAG_JPEGIFBYTECOUNT       :
+        case TIFFTAG_JPEGRESTARTINTERVAL   :
+        case TIFFTAG_JPEGLOSSLESSPREDICTORS:
+        case TIFFTAG_JPEGPOINTTRANSFORM    :
+        case TIFFTAG_JPEGQTABLES           :
+        case TIFFTAG_JPEGDCTABLES          :
+        case TIFFTAG_JPEGACTABLES          :
+        case TIFFTAG_WANG_PAGECONTROL      :
+        case TIFFTAG_JPEGCOLORMODE         : ;
+      };
+    v32 = va_arg(ap,uint32); /* No. of values in this TIFF record */
+
+    /* This switch statement is added for OJPEGVSetField */
+    if(v32 !=0){
+        switch(tag){
+            case TIFFTAG_JPEGPROC:
+                sp->jpegproc=v32;
+                break;
+            case TIFFTAG_JPEGIFOFFSET:
+                sp->jpegifoffset=v32;
+		break;
+            case TIFFTAG_JPEGIFBYTECOUNT:
+		sp->jpegifbytecount=v32;
+		break;
+            case TIFFTAG_JPEGRESTARTINTERVAL:
+		sp->jpegrestartinterval=v32;
+		break;
+            case TIFFTAG_JPEGLOSSLESSPREDICTORS:
+		sp->jpeglosslesspredictors_length=v32;
+		break;
+            case TIFFTAG_JPEGPOINTTRANSFORM:
+		sp->jpegpointtransform_length=v32;
+		break;
+            case TIFFTAG_JPEGQTABLES:
+		sp->jpegqtables_length=v32;
+		break;
+            case TIFFTAG_JPEGACTABLES:
+		sp->jpegactables_length=v32;
+		break;
+            case TIFFTAG_JPEGDCTABLES:
+		sp->jpegdctables_length=v32;
+		break;
+            default:
+		break;
+        }
+    }
+
+ /* BEWARE:  The following actions apply only if we are reading a "source" TIFF
+             image to be decompressed for a client application program.  If we
+    ever enhance this file's CODEC to write "destination" JPEG-in-TIFF images,
+    we'll need an "if"- and another "switch"-statement below, because we'll
+    probably want to store these records' values in some different places.  Most
+    of these need not be parsed here in order to decode JPEG bit stream, so we
+    set boolean flags to note that they have been seen, but we otherwise ignore
+    them.
+ */
+    switch (tag)
+      { JHUFF_TBL **h;
+
+     /* Validate the JPEG-process code. */
+
+        case TIFFTAG_JPEGPROC              :
+          switch (v32)
+            {
+              default               : TIFFError(tif->tif_name,
+                                        "Unknown JPEG process");
+                                      return 0;
+#             ifdef C_LOSSLESS_SUPPORTED
+
+           /* Image uses (lossy) baseline sequential coding. */
+
+              case JPEGPROC_BASELINE: sp->cinfo.d.process = JPROC_SEQUENTIAL;
+                                      sp->cinfo.d.data_unit = DCTSIZE;
+                                      break;
+
+           /* Image uses (lossless) Huffman coding. */
+
+              case JPEGPROC_LOSSLESS: sp->cinfo.d.process = JPROC_LOSSLESS;
+                                      sp->cinfo.d.data_unit = 1;
+#             else /* not C_LOSSLESS_SUPPORTED */
+              case JPEGPROC_LOSSLESS: TIFFError(JPEGLib_name,
+                                        "Does not support lossless Huffman coding");
+                                      return 0;
+              case JPEGPROC_BASELINE: ;
+#             endif /* C_LOSSLESS_SUPPORTED */
+            };
+          break;
+
+     /* The TIFF Version 6.0 specification says that if the value of a TIFF
+        "JPEGInterchangeFormat" record is 0, then we are to behave as if this
+        record were absent; i.e., the data does *not* represent a JPEG Inter-
+        change Format File (JFIF), so don't even set the boolean "I've been
+        here" flag below.  Otherwise, the field's value represents the file
+        offset of the JPEG SOI marker.
+     */
+        case TIFFTAG_JPEGIFOFFSET          :
+          if (v32)
+            {
+              sp->src.next_input_byte = tif->tif_base + v32;
+              break;
+            };
+          return 1;
+        case TIFFTAG_JPEGIFBYTECOUNT       :
+          sp->src.bytes_in_buffer = v32;
+          break;
+
+     /* The TIFF Version 6.0 specification says that if the JPEG "Restart"
+        marker interval is 0, then the data has no "Restart" markers; i.e., we
+        must behave as if this TIFF record were absent.  So, don't even set the
+        boolean "I've been here" flag below.
+     */
+     /*
+      * Instead, set the field bit so TIFFGetField can get whether or not
+      * it was set.
+      */
+        case TIFFTAG_JPEGRESTARTINTERVAL   :
+          if (v32)
+              sp->cinfo.d.restart_interval = v32;
+              break;
+     /* The TIFF Version 6.0 specification says that this tag is supposed to be
+        a vector containing a value for each image component, but for lossless
+        Huffman coding (the only JPEG process defined by the specification for
+        which this tag should be needed), ISO IS 10918-1 uses only a single
+        value, equivalent to the "Ss" field in a JPEG bit-stream's "Start of
+        Scan" (SOS) marker.  So, we extract the first vector element and ignore
+        the rest.  (I hope this is correct!)
+     */
+        case TIFFTAG_JPEGLOSSLESSPREDICTORS:
+           if (v32)
+             {
+               sp->cinfo.d.Ss = *va_arg(ap,uint16 *);
+               sp->jpeglosslesspredictors = 
+		    _TIFFmalloc(sp->jpeglosslesspredictors_length
+				* sizeof(uint16));
+               if(sp->jpeglosslesspredictors==NULL){return(0);}
+               for(i2=0;i2<sp->jpeglosslesspredictors_length;i2++){
+                ((uint16*)sp->jpeglosslesspredictors)[i2] =
+			((uint16*)sp->cinfo.d.Ss)[i2];
+               }
+               sp->jpeglosslesspredictors_length*=sizeof(uint16);
+               break;
+             };
+           return v32;
+
+     /* The TIFF Version 6.0 specification says that this tag is supposed to be
+        a vector containing a value for each image component, but for lossless
+        Huffman coding (the only JPEG process defined by the specification for
+        which this tag should be needed), ISO IS 10918-1 uses only a single
+        value, equivalent to the "Al" field in a JPEG bit-stream's "Start of
+        Scan" (SOS) marker.  So, we extract the first vector element and ignore
+        the rest.  (I hope this is correct!)
+     */
+        case TIFFTAG_JPEGPOINTTRANSFORM    :
+           if (v32)
+             {
+               sp->cinfo.d.Al = *va_arg(ap,uint16 *);
+               sp->jpegpointtransform =
+		    _TIFFmalloc(sp->jpegpointtransform_length*sizeof(uint16));
+               if(sp->jpegpointtransform==NULL){return(0);}
+               for(i2=0;i2<sp->jpegpointtransform_length;i2++) {
+                ((uint16*)sp->jpegpointtransform)[i2] =
+			((uint16*)sp->cinfo.d.Al)[i2];
+               }
+               sp->jpegpointtransform_length*=sizeof(uint16);
+               break;
+             }
+           return v32;
+
+     /* We have a vector of offsets to quantization tables, so load 'em! */
+
+        case TIFFTAG_JPEGQTABLES           :
+          if (v32)
+            { uint32 *v;
+              int i;
+              if (v32 > NUM_QUANT_TBLS)
+                {
+                  TIFFError(tif->tif_name,"Too many quantization tables");
+                  return 0;
+                };
+              i = 0;
+              v = va_arg(ap,uint32 *);
+                sp->jpegqtables=_TIFFmalloc(64*sp->jpegqtables_length);
+                if(sp->jpegqtables==NULL){return(0);}
+                tiffoff = TIFFSeekFile(tif, 0, SEEK_CUR);
+                bufoff=0;
+                for(i2=0;i2<sp->jpegqtables_length;i2++){
+                    TIFFSeekFile(tif, v[i2], SEEK_SET);
+                    TIFFReadFile(tif, &(((unsigned char*)(sp->jpegqtables))[bufoff]),
+				 64);
+                    bufoff+=64;
+                }
+                sp->jpegqtables_length=bufoff;
+                TIFFSeekFile(tif, tiffoff, SEEK_SET);
+
+              do /* read quantization table */
+                { register UINT8 *from = tif->tif_base + *v++;
+                  register UINT16 *to;
+                  register int j = DCTSIZE2;
+
+                  if (!( sp->cinfo.d.quant_tbl_ptrs[i]
+                       = CALLJPEG(sp,0,jpeg_alloc_quant_table(&sp->cinfo.comm))
+                       )
+                     )
+                    {
+                      TIFFError(JPEGLib_name,"No space for quantization table");
+                      return 0;
+                    };
+                  to = sp->cinfo.d.quant_tbl_ptrs[i]->quantval;
+                  do *to++ = *from++; while (--j > 0);
+                }
+              while (++i < v32);
+              sp->jpegtablesmode |= JPEGTABLESMODE_QUANT;
+            };
+          break;
+
+     /* We have a vector of offsets to DC Huffman tables, so load 'em! */
+
+        case TIFFTAG_JPEGDCTABLES          :
+          h = sp->cinfo.d.dc_huff_tbl_ptrs;
+          goto L;
+
+     /* We have a vector of offsets to AC Huffman tables, so load 'em! */
+
+        case TIFFTAG_JPEGACTABLES          :
+          h = sp->cinfo.d.ac_huff_tbl_ptrs;
+       L: if (v32)
+            { uint32 *v;
+              int i;
+              if (v32 > NUM_HUFF_TBLS)
+                {
+                  TIFFError(tif->tif_name,"Too many Huffman tables");
+                  return 0;
+                };
+              v = va_arg(ap,uint32 *);
+                if(tag == TIFFTAG_JPEGDCTABLES) {
+                    sp->jpegdctables=_TIFFmalloc(272*sp->jpegdctables_length);
+                    if(sp->jpegdctables==NULL){return(0);}
+                    tiffoff = TIFFSeekFile(tif, 0, SEEK_CUR);
+                    bufoff=0;
+                    code_count=0;                
+                    for(i2=0;i2<sp->jpegdctables_length;i2++){
+                        TIFFSeekFile(tif, v[i2], SEEK_SET);
+                        TIFFReadFile(tif,
+				     &(((unsigned char*)(sp->jpegdctables))[bufoff]),
+				     16);
+                        code_count=0;
+                        for(k2=0;k2<16;k2++){
+                            code_count+=((unsigned char*)(sp->jpegdctables))[k2+bufoff];
+                        }
+                        TIFFReadFile(tif,
+				     &(((unsigned char*)(sp->jpegdctables))[bufoff+16]),
+				     code_count);
+                        bufoff+=16;
+                        bufoff+=code_count;
+                    }
+                    sp->jpegdctables_length=bufoff;
+                    TIFFSeekFile(tif, tiffoff, SEEK_SET);
+                }
+                if(tag==TIFFTAG_JPEGACTABLES){
+                    sp->jpegactables=_TIFFmalloc(272*sp->jpegactables_length);
+                    if(sp->jpegactables==NULL){return(0);}
+                    tiffoff = TIFFSeekFile(tif, 0, SEEK_CUR);
+                    bufoff=0;
+                    code_count=0;                
+                    for(i2=0;i2<sp->jpegactables_length;i2++){
+                        TIFFSeekFile(tif, v[i2], SEEK_SET);
+                        TIFFReadFile(tif, &(((unsigned char*)(sp->jpegactables))[bufoff]), 16);
+                        code_count=0;
+                        for(k2=0;k2<16;k2++){
+                            code_count+=((unsigned char*)(sp->jpegactables))[k2+bufoff];
+                        }
+                        TIFFReadFile(tif, &(((unsigned char*)(sp->jpegactables))[bufoff+16]), code_count);
+                        bufoff+=16;
+                        bufoff+=code_count;
+                    }
+                    sp->jpegactables_length=bufoff;
+                    TIFFSeekFile(tif, tiffoff, SEEK_SET);
+                }
+              i = 0;
+              do /* copy each Huffman table */
+                { int size = 0;
+                  register UINT8 *from = tif->tif_base + *v++, *to;
+                  register int j = sizeof (*h)->bits;
+
+               /* WARNING:  This code relies on the fact that an image file not
+                            "memory mapped" was read entirely into a single
+                  buffer by "TIFFInitOJPEG()", so we can do a fast memory-to-
+                  memory copy here.  Each table consists of 16 Bytes, which are
+                  suffixed to a 0 Byte when copied, followed by a variable
+                  number of Bytes whose length is the sum of the first 16.
+               */
+                  if (!( *h
+                       = CALLJPEG(sp,0,jpeg_alloc_huff_table(&sp->cinfo.comm))
+                       )
+                     )
+                    {
+                      TIFFError(JPEGLib_name,"No space for Huffman table");
+                      return 0;
+                    };
+                  to = (*h++)->bits;
+                  *to++ = 0;
+                  while (--j > 0) size += *to++ = *from++; /* Copy 16 Bytes */
+                  if (size > sizeof (*h)->huffval/sizeof *(*h)->huffval)
+                    {
+                      TIFFError(tif->tif_name,"Huffman table too big");
+                      return 0;
+                    };
+                  if ((j = size) > 0) do *to++ = *from++; while (--j > 0);
+                  while (++size <= sizeof (*h)->huffval/sizeof *(*h)->huffval)
+                    *to++ = 0; /* Zero the rest of the table for cleanliness */
+                }
+              while (++i < v32);
+              sp->jpegtablesmode |= JPEGTABLESMODE_HUFF;
+            };
+          break;
+
+     /* The following vendor-specific TIFF tag occurs in (highly illegal) files
+        produced by the Wang Imaging application for Microsoft Windows.  These
+        can apparently have several "pages", in which case this tag specifies
+        the offset of a "page control" structure, which we don't currently know
+        how to handle.  0 indicates a 1-page image with no "page control", which
+        we make a feeble effort to handle.
+     */
+        case TIFFTAG_WANG_PAGECONTROL      :
+          if (v32 == 0) v32 = -1;
+          sp->is_WANG = v32;
+          tag = TIFFTAG_JPEGPROC+FIELD_WANG_PAGECONTROL-FIELD_JPEGPROC;
+          break;
+
+     /* This pseudo tag indicates whether our caller is expected to do YCbCr <->
+        RGB color-space conversion (JPEGCOLORMODE_RAW <=> 0) or whether we must
+        ask the JPEG Library to do it (JPEGCOLORMODE_RGB <=> 1).
+     */
+        case TIFFTAG_JPEGCOLORMODE         :
+          sp->jpegcolormode = v32;
+
+       /* Mark the image to indicate whether returned data is up-sampled, so
+          that "TIFF{Strip,Tile}Size()" reflect the true amount of data present.
+       */
+          v32 = tif->tif_flags; /* Save flags temporarily */
+          tif->tif_flags &= ~TIFF_UPSAMPLED;
+          if (   td->td_photometric == PHOTOMETRIC_YCBCR
+              &&    (td->td_ycbcrsubsampling[0]<<3 | td->td_ycbcrsubsampling[1])
+                 != 011
+              && sp->jpegcolormode == JPEGCOLORMODE_RGB
+             ) tif->tif_flags |= TIFF_UPSAMPLED;
+
+       /* If the up-sampling state changed, re-calculate tile size. */
+
+          if ((tif->tif_flags ^ v32) & TIFF_UPSAMPLED)
+            {
+              tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
+              tif->tif_flags |= TIFF_DIRTYDIRECT;
+            };
+          return 1;
+      };
+    TIFFSetFieldBit(tif,tag-TIFFTAG_JPEGPROC+FIELD_JPEGPROC);
+    return 1;
+#   undef td
+  }
+
+static int
+OJPEGVGetField(register TIFF *tif,ttag_t tag,va_list ap)
+  { register OJPEGState *sp = OJState(tif);
+
+    switch (tag)
+      {
+
+     /* If this file has managed to synthesize a set of consolidated "metadata"
+        tables for the current (post-TIFF Version 6.0 specification) JPEG-in-
+        TIFF encapsulation strategy, then tell our caller about them; otherwise,
+        keep mum.
+     */
+        case TIFFTAG_JPEGTABLES            :
+          if (sp->jpegtables_length) /* we have "new"-style JPEG tables */
+            {
+              *va_arg(ap,uint32 *) = sp->jpegtables_length;
+              *va_arg(ap,char **) = sp->jpegtables;
+              return 1;
+            };
+
+     /* This pseudo tag indicates whether our caller is expected to do YCbCr <->
+        RGB color-space conversion (JPEGCOLORMODE_RAW <=> 0) or whether we must
+        ask the JPEG Library to do it (JPEGCOLORMODE_RGB <=> 1).
+     */
+        case TIFFTAG_JPEGCOLORMODE         :
+          *va_arg(ap,uint32 *) = sp->jpegcolormode;
+          return 1;
+
+     /* The following tags are defined by the TIFF Version 6.0 specification
+        and are obsolete.  If our caller asks for information about them, do not
+        return anything, even if we parsed them in an old-format "source" image.
+     */
+        case TIFFTAG_JPEGPROC              :
+		*va_arg(ap, uint16*)=sp->jpegproc;
+		return(1);
+		break;
+        case TIFFTAG_JPEGIFOFFSET          :
+		*va_arg(ap, uint32*)=sp->jpegifoffset;
+		return(1);
+		break;
+        case TIFFTAG_JPEGIFBYTECOUNT       :
+		*va_arg(ap, uint32*)=sp->jpegifbytecount;
+		return(1);
+		break;
+        case TIFFTAG_JPEGRESTARTINTERVAL   :
+		*va_arg(ap, uint32*)=sp->jpegrestartinterval;
+		return(1);
+		break;
+        case TIFFTAG_JPEGLOSSLESSPREDICTORS:
+                *va_arg(ap, uint32*)=sp->jpeglosslesspredictors_length;
+                *va_arg(ap, void**)=sp->jpeglosslesspredictors;
+                return(1);
+                break;
+        case TIFFTAG_JPEGPOINTTRANSFORM    :
+                *va_arg(ap, uint32*)=sp->jpegpointtransform_length;
+                *va_arg(ap, void**)=sp->jpegpointtransform;
+                return(1);
+                break;
+        case TIFFTAG_JPEGQTABLES           :
+                *va_arg(ap, uint32*)=sp->jpegqtables_length;
+                *va_arg(ap, void**)=sp->jpegqtables;
+                return(1);
+                break;
+        case TIFFTAG_JPEGDCTABLES          :
+                *va_arg(ap, uint32*)=sp->jpegdctables_length;
+                *va_arg(ap, void**)=sp->jpegdctables;
+                return(1);
+                break;
+        case TIFFTAG_JPEGACTABLES          : 
+                *va_arg(ap, uint32*)=sp->jpegactables_length;
+                *va_arg(ap, void**)=sp->jpegactables;
+                return(1);
+                break;
+      };
+    return (*sp->vgetparent)(tif,tag,ap);
+  }
+
+static void
+OJPEGPrintDir(register TIFF *tif,FILE *fd,long flags)
+  { register OJPEGState *sp = OJState(tif);
+
+    if (   ( flags
+           & (TIFFPRINT_JPEGQTABLES|TIFFPRINT_JPEGDCTABLES|TIFFPRINT_JPEGACTABLES)
+           )
+        && sp->jpegtables_length
+       )
+      fprintf(fd,"  JPEG Table Data: <present>, %lu bytes\n",
+        sp->jpegtables_length);
+  }
+
+static uint32
+OJPEGDefaultStripSize(register TIFF *tif,register uint32 s)
+  { register OJPEGState *sp = OJState(tif);
+#   define td (&tif->tif_dir)
+
+    if ((s = (*sp->defsparent)(tif,s)) < td->td_imagelength)
+      { register tsize_t size = sp->cinfo.comm.is_decompressor
+#                             ifdef D_LOSSLESS_SUPPORTED
+                              ? sp->cinfo.d.min_codec_data_unit
+#                             else
+                              ? DCTSIZE
+#                             endif
+#                             ifdef C_LOSSLESS_SUPPORTED
+                              : sp->cinfo.c.data_unit;
+#                             else
+                              : DCTSIZE;
+#                             endif
+
+        size = TIFFroundup(size,16);
+        s = TIFFroundup(s,td->td_ycbcrsubsampling[1]*size);
+      };
+    return s;
+#   undef td
+  }
+
+static void
+OJPEGDefaultTileSize(register TIFF *tif,register uint32 *tw,register uint32 *th)
+  { register OJPEGState *sp = OJState(tif);
+    register tsize_t size;
+#   define td (&tif->tif_dir)
+
+    size = sp->cinfo.comm.is_decompressor
+#        ifdef D_LOSSLESS_SUPPORTED
+         ? sp->cinfo.d.min_codec_data_unit
+#        else
+         ? DCTSIZE
+#        endif
+#        ifdef C_LOSSLESS_SUPPORTED
+         : sp->cinfo.c.data_unit;
+#        else
+         : DCTSIZE;
+#        endif
+    size = TIFFroundup(size,16);
+    (*sp->deftparent)(tif,tw,th);
+    *tw = TIFFroundup(*tw,td->td_ycbcrsubsampling[0]*size);
+    *th = TIFFroundup(*th,td->td_ycbcrsubsampling[1]*size);
+#   undef td
+  }
+
+static void
+OJPEGCleanUp(register TIFF *tif)
+  { register OJPEGState *sp;
+
+    if ( (sp = OJState(tif)) )
+      {
+        CALLVJPEG(sp,jpeg_destroy(&sp->cinfo.comm)); /* Free JPEG Lib. vars. */
+        if (sp->jpegtables) {_TIFFfree(sp->jpegtables);sp->jpegtables=0;}
+        if (sp->jpeglosslesspredictors) {
+		_TIFFfree(sp->jpeglosslesspredictors);
+		sp->jpeglosslesspredictors = 0;
+	}
+        if (sp->jpegpointtransform) {
+		_TIFFfree(sp->jpegpointtransform);
+		sp->jpegpointtransform=0;
+	}
+        if (sp->jpegqtables) {_TIFFfree(sp->jpegqtables);sp->jpegqtables=0;}
+        if (sp->jpegactables) {_TIFFfree(sp->jpegactables);sp->jpegactables=0;}
+        if (sp->jpegdctables) {_TIFFfree(sp->jpegdctables);sp->jpegdctables=0;}
+     /* If the image file isn't "memory mapped" and we read it all into a
+        single, large memory buffer, free the buffer now.
+     */
+        if (!isMapped(tif) && tif->tif_base) /* free whole-file buffer */
+          {
+            _TIFFfree(tif->tif_base);
+            tif->tif_base = 0;
+            tif->tif_size = 0;
+          };
+        _TIFFfree(sp); /* Release local variables */
+        tif->tif_data = 0;
+      }
+  }
+
+int
+TIFFInitOJPEG(register TIFF *tif,int scheme)
+  { register OJPEGState *sp;
+#   define td (&tif->tif_dir)
+#   ifndef never
+
+ /* This module supports a decompression-only CODEC, which is intended strictly
+    for viewing old image files using the obsolete JPEG-in-TIFF encapsulation
+    specified by the TIFF Version 6.0 specification.  It does not, and never
+    should, support compression for new images.  If a client application asks us
+    to, refuse and complain loudly!
+ */
+    if (tif->tif_mode != O_RDONLY) return _notSupported(tif);
+#   endif /* never */
+    if (!isMapped(tif))
+      {
+
+     /* BEWARE OF KLUDGE:  If our host operating-system doesn't let an image
+                           file be "memory mapped", then we want to read the
+        entire file into a single (possibly large) memory buffer as if it had
+        been "memory mapped".  Although this is likely to waste space, because
+        analysis of the file's content might cause parts of it to be read into
+        smaller buffers duplicatively, it appears to be the lesser of several
+        evils.  Very old JPEG-in-TIFF encapsulations aren't guaranteed to be
+        JFIF bit streams, or to have a TIFF "JPEGTables" record or much other
+        "metadata" to help us locate the decoding tables and entropy-coded data,
+        so we're likely do a lot of random-access grokking around, and we must
+        ultimately tell the JPEG Library to sequentially scan much of the file
+        anyway.  This is all likely to be easier if we use "brute force" to
+        read the entire file, once, and don't use incremental disc I/O.  If our
+        client application tries to process a file so big that we can't buffer
+        it entirely, then tough shit: we'll give up and exit!
+     */
+        if (!(tif->tif_base = _TIFFmalloc(tif->tif_size=TIFFGetFileSize(tif))))
+          {
+            TIFFError(tif->tif_name,"Cannot allocate file buffer");
+            return 0;
+          };
+        if (!SeekOK(tif,0) || !ReadOK(tif,tif->tif_base,tif->tif_size))
+          {
+            TIFFError(tif->tif_name,"Cannot read file");
+            return 0;
+          }
+      };
+
+ /* Allocate storage for this module's per-file variables. */
+
+    if (!(tif->tif_data = (tidata_t)_TIFFmalloc(sizeof *sp)))
+      {
+        TIFFError("TIFFInitOJPEG","No space for JPEG state block");
+        return 0;
+      };
+    (sp = OJState(tif))->tif = tif; /* Initialize reverse pointer */
+    sp->cinfo.d.err = jpeg_std_error(&sp->err); /* Initialize error handling */
+    sp->err.error_exit = TIFFojpeg_error_exit;
+    sp->err.output_message = TIFFojpeg_output_message;
+    if (!CALLVJPEG(sp,jpeg_create_decompress(&sp->cinfo.d))) return 0;
+
+ /* Install CODEC-specific tag information and override default TIFF Library
+    "method" subroutines with our own, CODEC-specific methods.  Like all good
+    members of an object-class, we save some of these subroutine pointers for
+    "fall back" in case our own methods fail.
+ */
+    _TIFFMergeFieldInfo(tif,ojpegFieldInfo,
+      sizeof ojpegFieldInfo/sizeof *ojpegFieldInfo);
+    sp->defsparent = tif->tif_defstripsize;
+    sp->deftparent = tif->tif_deftilesize;
+    sp->vgetparent = tif->tif_tagmethods.vgetfield;
+    sp->vsetparent = tif->tif_tagmethods.vsetfield;
+    tif->tif_defstripsize = OJPEGDefaultStripSize;
+    tif->tif_deftilesize = OJPEGDefaultTileSize;
+    tif->tif_tagmethods.vgetfield = OJPEGVGetField;
+    tif->tif_tagmethods.vsetfield = OJPEGVSetField;
+    tif->tif_tagmethods.printdir = OJPEGPrintDir;
+#   ifdef never
+    tif->tif_setupencode = OJPEGSetupEncode;
+    tif->tif_preencode = OJPEGPreEncode;
+    tif->tif_postencode = OJPEGPostEncode;
+#   else /* well, hardly ever */
+    tif->tif_setupencode = tif->tif_postencode = _notSupported;
+    tif->tif_preencode = (TIFFPreMethod)_notSupported;
+#   endif /* never */
+    tif->tif_setupdecode = OJPEGSetupDecode;
+    tif->tif_predecode = OJPEGPreDecode;
+    tif->tif_postdecode = OJPEGPostDecode;
+    tif->tif_cleanup = OJPEGCleanUp;
+
+ /* If the image file doesn't have "JPEGInterchangeFormat[Length]" TIFF records
+    to guide us, we have few clues about where its encapsulated JPEG bit stream
+    is located, so establish intelligent defaults:  If the Image File Directory
+    doesn't immediately follow the TIFF header, assume that the JPEG data lies
+    in between; otherwise, assume that it follows the Image File Directory.
+ */
+    if (tif->tif_header.tiff_diroff > sizeof tif->tif_header)
+      {
+        sp->src.next_input_byte = tif->tif_base + sizeof tif->tif_header;
+        sp->src.bytes_in_buffer = tif->tif_header.tiff_diroff
+                                - sizeof tif->tif_header;
+      }
+    else /* this case is ugly! */
+      { uint32 maxoffset = tif->tif_size;
+        uint16 dircount;
+
+     /* Calculate the offset to the next Image File Directory, if there is one,
+        or to the end of the file, if not.  Then arrange to read the file from
+        the end of the Image File Directory to that offset.
+     */
+        if (tif->tif_nextdiroff) maxoffset = tif->tif_nextdiroff; /* Not EOF */
+        _TIFFmemcpy(&dircount,(const tdata_t)
+          (sp->src.next_input_byte = tif->tif_base+tif->tif_header.tiff_diroff),
+          sizeof dircount);
+        if (tif->tif_flags & TIFF_SWAB) TIFFSwabShort(&dircount);
+        sp->src.next_input_byte += dircount*sizeof(TIFFDirEntry)
+                                + sizeof maxoffset + sizeof dircount;
+        sp->src.bytes_in_buffer = tif->tif_base - sp->src.next_input_byte
+                                + maxoffset;
+      };
+
+ /* IJG JPEG Library Version 6B can be configured for either 8- or 12-bit sample
+    precision, but we assume that "old JPEG" TIFF clients only need 8 bits.
+ */
+    sp->cinfo.d.data_precision = 8;
+#   ifdef C_LOSSLESS_SUPPORTED
+
+ /* If the "JPEGProc" TIFF tag is missing from the Image File Dictionary, the
+    JPEG Library will use its (lossy) baseline sequential process by default.
+ */
+    sp->cinfo.d.data_unit = DCTSIZE;
+#   endif /* C_LOSSLESS_SUPPORTED */
+
+ /* Initialize other CODEC-specific variables requiring default values. */
+
+    tif->tif_flags |= TIFF_NOBITREV; /* No bit-reversal within data bytes */
+    sp->h_sampling = sp->v_sampling = 1; /* No subsampling by default */
+    sp->is_WANG = 0; /* Assume not a MS Windows Wang Imaging file by default */
+    sp->jpegtables = 0; /* No "new"-style JPEG tables synthesized yet */
+    sp->jpegtables_length = 0;
+    sp->jpegquality = 75; /* Default IJG quality */
+    sp->jpegcolormode = JPEGCOLORMODE_RAW;
+    sp->jpegtablesmode = 0; /* No tables found yet */
+    sp->jpeglosslesspredictors=0;
+    sp->jpeglosslesspredictors_length=0;
+    sp->jpegpointtransform=0;
+    sp->jpegpointtransform_length=0;
+    sp->jpegqtables=0;
+    sp->jpegqtables_length=0;
+    sp->jpegdctables=0;
+    sp->jpegdctables_length=0;
+    sp->jpegactables=0;
+    sp->jpegactables_length=0;
+    return 1;
+#   undef td
+  }
+#endif /* OJPEG_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_open.c b/src/libtiff/tif_open.c
new file mode 100644
index 0000000..98b30fa
--- /dev/null
+++ b/src/libtiff/tif_open.c
@@ -0,0 +1,683 @@
+/* $Id: tif_open.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#include "tiffiop.h"
+
+static const long typemask[13] = {
+	(long)0L,		/* TIFF_NOTYPE */
+	(long)0x000000ffL,	/* TIFF_BYTE */
+	(long)0xffffffffL,	/* TIFF_ASCII */
+	(long)0x0000ffffL,	/* TIFF_SHORT */
+	(long)0xffffffffL,	/* TIFF_LONG */
+	(long)0xffffffffL,	/* TIFF_RATIONAL */
+	(long)0x000000ffL,	/* TIFF_SBYTE */
+	(long)0x000000ffL,	/* TIFF_UNDEFINED */
+	(long)0x0000ffffL,	/* TIFF_SSHORT */
+	(long)0xffffffffL,	/* TIFF_SLONG */
+	(long)0xffffffffL,	/* TIFF_SRATIONAL */
+	(long)0xffffffffL,	/* TIFF_FLOAT */
+	(long)0xffffffffL,	/* TIFF_DOUBLE */
+};
+static const int bigTypeshift[13] = {
+	0,		/* TIFF_NOTYPE */
+	24,		/* TIFF_BYTE */
+	0,		/* TIFF_ASCII */
+	16,		/* TIFF_SHORT */
+	0,		/* TIFF_LONG */
+	0,		/* TIFF_RATIONAL */
+	24,		/* TIFF_SBYTE */
+	24,		/* TIFF_UNDEFINED */
+	16,		/* TIFF_SSHORT */
+	0,		/* TIFF_SLONG */
+	0,		/* TIFF_SRATIONAL */
+	0,		/* TIFF_FLOAT */
+	0,		/* TIFF_DOUBLE */
+};
+static const int litTypeshift[13] = {
+	0,		/* TIFF_NOTYPE */
+	0,		/* TIFF_BYTE */
+	0,		/* TIFF_ASCII */
+	0,		/* TIFF_SHORT */
+	0,		/* TIFF_LONG */
+	0,		/* TIFF_RATIONAL */
+	0,		/* TIFF_SBYTE */
+	0,		/* TIFF_UNDEFINED */
+	0,		/* TIFF_SSHORT */
+	0,		/* TIFF_SLONG */
+	0,		/* TIFF_SRATIONAL */
+	0,		/* TIFF_FLOAT */
+	0,		/* TIFF_DOUBLE */
+};
+
+/*
+ * Dummy functions to fill the omitted client procedures.
+ */
+static int
+_tiffDummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
+{
+	(void) fd; (void) pbase; (void) psize;
+	return (0);
+}
+
+static void
+_tiffDummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
+{
+	(void) fd; (void) base; (void) size;
+}
+
+/*
+ * Initialize the shift & mask tables, and the
+ * byte swapping state according to the file
+ * contents and the machine architecture.
+ */
+static void
+TIFFInitOrder(TIFF* tif, int magic)
+{
+	tif->tif_typemask = typemask;
+	if (magic == TIFF_BIGENDIAN) {
+		tif->tif_typeshift = bigTypeshift;
+#ifndef WORDS_BIGENDIAN
+		tif->tif_flags |= TIFF_SWAB;
+#endif
+	} else {
+		tif->tif_typeshift = litTypeshift;
+#ifdef WORDS_BIGENDIAN
+		tif->tif_flags |= TIFF_SWAB;
+#endif
+	}
+}
+
+int
+_TIFFgetMode(const char* mode, const char* module)
+{
+	int m = -1;
+
+	switch (mode[0]) {
+	case 'r':
+		m = O_RDONLY;
+		if (mode[1] == '+')
+			m = O_RDWR;
+		break;
+	case 'w':
+	case 'a':
+		m = O_RDWR|O_CREAT;
+		if (mode[0] == 'w')
+			m |= O_TRUNC;
+		break;
+	default:
+		TIFFErrorExt(0, module, "\"%s\": Bad mode", mode);
+		break;
+	}
+	return (m);
+}
+
+TIFF*
+TIFFClientOpen(
+	const char* name, const char* mode,
+	thandle_t clientdata,
+	TIFFReadWriteProc readproc,
+	TIFFReadWriteProc writeproc,
+	TIFFSeekProc seekproc,
+	TIFFCloseProc closeproc,
+	TIFFSizeProc sizeproc,
+	TIFFMapFileProc mapproc,
+	TIFFUnmapFileProc unmapproc
+)
+{
+	static const char module[] = "TIFFClientOpen";
+	TIFF *tif;
+	int m;
+	const char* cp;
+
+	m = _TIFFgetMode(mode, module);
+	if (m == -1)
+		goto bad2;
+	tif = (TIFF *)_TIFFmalloc(sizeof (TIFF) + strlen(name) + 1);
+	if (tif == NULL) {
+		TIFFErrorExt(clientdata, module, "%s: Out of memory (TIFF structure)", name);
+		goto bad2;
+	}
+	_TIFFmemset(tif, 0, sizeof (*tif));
+	tif->tif_name = (char *)tif + sizeof (TIFF);
+	strcpy(tif->tif_name, name);
+	tif->tif_mode = m &~ (O_CREAT|O_TRUNC);
+	tif->tif_curdir = (tdir_t) -1;		/* non-existent directory */
+	tif->tif_curoff = 0;
+	tif->tif_curstrip = (tstrip_t) -1;	/* invalid strip */
+	tif->tif_row = (uint32) -1;		/* read/write pre-increment */
+	tif->tif_clientdata = clientdata;
+	if (!readproc || !writeproc || !seekproc || !closeproc || !sizeproc) {
+		TIFFErrorExt(clientdata, module,
+			  "One of the client procedures is NULL pointer.");
+		goto bad2;
+	}
+	tif->tif_readproc = readproc;
+	tif->tif_writeproc = writeproc;
+	tif->tif_seekproc = seekproc;
+	tif->tif_closeproc = closeproc;
+	tif->tif_sizeproc = sizeproc;
+        if (mapproc)
+		tif->tif_mapproc = mapproc;
+	else
+		tif->tif_mapproc = _tiffDummyMapProc;
+	if (unmapproc)
+		tif->tif_unmapproc = unmapproc;
+	else
+		tif->tif_unmapproc = _tiffDummyUnmapProc;
+	_TIFFSetDefaultCompressionState(tif);	/* setup default state */
+	/*
+	 * Default is to return data MSB2LSB and enable the
+	 * use of memory-mapped files and strip chopping when
+	 * a file is opened read-only.
+	 */
+	tif->tif_flags = FILLORDER_MSB2LSB;
+	if (m == O_RDONLY )
+            tif->tif_flags |= TIFF_MAPPED;
+
+#ifdef STRIPCHOP_DEFAULT
+	if (m == O_RDONLY || m == O_RDWR)
+		tif->tif_flags |= STRIPCHOP_DEFAULT;
+#endif
+
+	/*
+	 * Process library-specific flags in the open mode string.
+	 * The following flags may be used to control intrinsic library
+	 * behaviour that may or may not be desirable (usually for
+	 * compatibility with some application that claims to support
+	 * TIFF but only supports some braindead idea of what the
+	 * vendor thinks TIFF is):
+	 *
+	 * 'l'		use little-endian byte order for creating a file
+	 * 'b'		use big-endian byte order for creating a file
+	 * 'L'		read/write information using LSB2MSB bit order
+	 * 'B'		read/write information using MSB2LSB bit order
+	 * 'H'		read/write information using host bit order
+	 * 'M'		enable use of memory-mapped files when supported
+	 * 'm'		disable use of memory-mapped files
+	 * 'C'		enable strip chopping support when reading
+	 * 'c'		disable strip chopping support
+	 * 'h'		read TIFF header only, do not load the first IFD
+	 *
+	 * The use of the 'l' and 'b' flags is strongly discouraged.
+	 * These flags are provided solely because numerous vendors,
+	 * typically on the PC, do not correctly support TIFF; they
+	 * only support the Intel little-endian byte order.  This
+	 * support is not configured by default because it supports
+	 * the violation of the TIFF spec that says that readers *MUST*
+	 * support both byte orders.  It is strongly recommended that
+	 * you not use this feature except to deal with busted apps
+	 * that write invalid TIFF.  And even in those cases you should
+	 * bang on the vendors to fix their software.
+	 *
+	 * The 'L', 'B', and 'H' flags are intended for applications
+	 * that can optimize operations on data by using a particular
+	 * bit order.  By default the library returns data in MSB2LSB
+	 * bit order for compatibiltiy with older versions of this
+	 * library.  Returning data in the bit order of the native cpu
+	 * makes the most sense but also requires applications to check
+	 * the value of the FillOrder tag; something they probably do
+	 * not do right now.
+	 *
+	 * The 'M' and 'm' flags are provided because some virtual memory
+	 * systems exhibit poor behaviour when large images are mapped.
+	 * These options permit clients to control the use of memory-mapped
+	 * files on a per-file basis.
+	 *
+	 * The 'C' and 'c' flags are provided because the library support
+	 * for chopping up large strips into multiple smaller strips is not
+	 * application-transparent and as such can cause problems.  The 'c'
+	 * option permits applications that only want to look at the tags,
+	 * for example, to get the unadulterated TIFF tag information.
+	 */
+	for (cp = mode; *cp; cp++)
+		switch (*cp) {
+		case 'b':
+#ifndef WORDS_BIGENDIAN
+		    if (m&O_CREAT)
+				tif->tif_flags |= TIFF_SWAB;
+#endif
+			break;
+		case 'l':
+#ifdef WORDS_BIGENDIAN
+			if ((m&O_CREAT))
+				tif->tif_flags |= TIFF_SWAB;
+#endif
+			break;
+		case 'B':
+			tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+			    FILLORDER_MSB2LSB;
+			break;
+		case 'L':
+			tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+			    FILLORDER_LSB2MSB;
+			break;
+		case 'H':
+			tif->tif_flags = (tif->tif_flags &~ TIFF_FILLORDER) |
+			    HOST_FILLORDER;
+			break;
+		case 'M':
+			if (m == O_RDONLY)
+				tif->tif_flags |= TIFF_MAPPED;
+			break;
+		case 'm':
+			if (m == O_RDONLY)
+				tif->tif_flags &= ~TIFF_MAPPED;
+			break;
+		case 'C':
+			if (m == O_RDONLY)
+				tif->tif_flags |= TIFF_STRIPCHOP;
+			break;
+		case 'c':
+			if (m == O_RDONLY)
+				tif->tif_flags &= ~TIFF_STRIPCHOP;
+			break;
+		case 'h':
+			tif->tif_flags |= TIFF_HEADERONLY;
+			break;
+		}
+	/*
+	 * Read in TIFF header.
+	 */
+	if (tif->tif_mode & O_TRUNC ||
+	    !ReadOK(tif, &tif->tif_header, sizeof (TIFFHeader))) {
+		if (tif->tif_mode == O_RDONLY) {
+			TIFFErrorExt(tif->tif_clientdata, name, "Cannot read TIFF header");
+			goto bad;
+		}
+		/*
+		 * Setup header and write.
+		 */
+#ifdef WORDS_BIGENDIAN
+		tif->tif_header.tiff_magic = tif->tif_flags & TIFF_SWAB
+		    ? TIFF_LITTLEENDIAN : TIFF_BIGENDIAN;
+#else
+		tif->tif_header.tiff_magic = tif->tif_flags & TIFF_SWAB
+		    ? TIFF_BIGENDIAN : TIFF_LITTLEENDIAN;
+#endif
+		tif->tif_header.tiff_version = TIFF_VERSION;
+		if (tif->tif_flags & TIFF_SWAB)
+			TIFFSwabShort(&tif->tif_header.tiff_version);
+		tif->tif_header.tiff_diroff = 0;	/* filled in later */
+
+
+                /*
+                 * The doc for "fopen" for some STD_C_LIBs says that if you 
+                 * open a file for modify ("+"), then you must fseek (or 
+                 * fflush?) between any freads and fwrites.  This is not
+                 * necessary on most systems, but has been shown to be needed
+                 * on Solaris. 
+                 */
+                TIFFSeekFile( tif, 0, SEEK_SET );
+               
+		if (!WriteOK(tif, &tif->tif_header, sizeof (TIFFHeader))) {
+			TIFFErrorExt(tif->tif_clientdata, name, "Error writing TIFF header");
+			goto bad;
+		}
+		/*
+		 * Setup the byte order handling.
+		 */
+		TIFFInitOrder(tif, tif->tif_header.tiff_magic);
+		/*
+		 * Setup default directory.
+		 */
+		if (!TIFFDefaultDirectory(tif))
+			goto bad;
+		tif->tif_diroff = 0;
+		tif->tif_dirlist = NULL;
+		tif->tif_dirnumber = 0;
+		return (tif);
+	}
+	/*
+	 * Setup the byte order handling.
+	 */
+	if (tif->tif_header.tiff_magic != TIFF_BIGENDIAN &&
+	    tif->tif_header.tiff_magic != TIFF_LITTLEENDIAN
+#if MDI_SUPPORT
+	    &&
+#if HOST_BIGENDIAN
+	    tif->tif_header.tiff_magic != MDI_BIGENDIAN
+#else
+	    tif->tif_header.tiff_magic != MDI_LITTLEENDIAN
+#endif
+	    ) {
+		TIFFErrorExt(tif->tif_clientdata, name,  "Not a TIFF or MDI file, bad magic number %d (0x%x)",
+#else
+	    ) {
+		TIFFErrorExt(tif->tif_clientdata, name,  "Not a TIFF file, bad magic number %d (0x%x)",
+#endif
+		    tif->tif_header.tiff_magic,
+		    tif->tif_header.tiff_magic);
+		goto bad;
+	}
+	TIFFInitOrder(tif, tif->tif_header.tiff_magic);
+	/*
+	 * Swap header if required.
+	 */
+	if (tif->tif_flags & TIFF_SWAB) {
+		TIFFSwabShort(&tif->tif_header.tiff_version);
+		TIFFSwabLong(&tif->tif_header.tiff_diroff);
+	}
+	/*
+	 * Now check version (if needed, it's been byte-swapped).
+	 * Note that this isn't actually a version number, it's a
+	 * magic number that doesn't change (stupid).
+	 */
+	if (tif->tif_header.tiff_version == TIFF_BIGTIFF_VERSION) {
+		TIFFErrorExt(tif->tif_clientdata, name,
+                          "This is a BigTIFF file.  This format not supported\n"
+                          "by this version of libtiff." );
+		goto bad;
+	}
+	if (tif->tif_header.tiff_version != TIFF_VERSION) {
+		TIFFErrorExt(tif->tif_clientdata, name,
+		    "Not a TIFF file, bad version number %d (0x%x)",
+		    tif->tif_header.tiff_version,
+		    tif->tif_header.tiff_version); 
+		goto bad;
+	}
+	tif->tif_flags |= TIFF_MYBUFFER;
+	tif->tif_rawcp = tif->tif_rawdata = 0;
+	tif->tif_rawdatasize = 0;
+
+	/*
+	 * Sometimes we do not want to read the first directory (for example,
+	 * it may be broken) and want to proceed to other directories. I this
+	 * case we use the TIFF_HEADERONLY flag to open file and return
+	 * immediately after reading TIFF header.
+	 */
+	if (tif->tif_flags & TIFF_HEADERONLY)
+		return (tif);
+
+	/*
+	 * Setup initial directory.
+	 */
+	switch (mode[0]) {
+	case 'r':
+		tif->tif_nextdiroff = tif->tif_header.tiff_diroff;
+		/*
+		 * Try to use a memory-mapped file if the client
+		 * has not explicitly suppressed usage with the
+		 * 'm' flag in the open mode (see above).
+		 */
+		if ((tif->tif_flags & TIFF_MAPPED) &&
+	!TIFFMapFileContents(tif, (tdata_t*) &tif->tif_base, &tif->tif_size))
+			tif->tif_flags &= ~TIFF_MAPPED;
+		if (TIFFReadDirectory(tif)) {
+			tif->tif_rawcc = -1;
+			tif->tif_flags |= TIFF_BUFFERSETUP;
+			return (tif);
+		}
+		break;
+	case 'a':
+		/*
+		 * New directories are automatically append
+		 * to the end of the directory chain when they
+		 * are written out (see TIFFWriteDirectory).
+		 */
+		if (!TIFFDefaultDirectory(tif))
+			goto bad;
+		return (tif);
+	}
+bad:
+	tif->tif_mode = O_RDONLY;	/* XXX avoid flush */
+        TIFFCleanup(tif);
+bad2:
+	return ((TIFF*)0);
+}
+
+/*
+ * Query functions to access private data.
+ */
+
+/*
+ * Return open file's name.
+ */
+const char *
+TIFFFileName(TIFF* tif)
+{
+	return (tif->tif_name);
+}
+
+/*
+ * Set the file name.
+ */
+const char *
+TIFFSetFileName(TIFF* tif, const char *name)
+{
+	const char* old_name = tif->tif_name;
+	tif->tif_name = (char *)name;
+	return (old_name);
+}
+
+/*
+ * Return open file's I/O descriptor.
+ */
+int
+TIFFFileno(TIFF* tif)
+{
+	return (tif->tif_fd);
+}
+
+/*
+ * Set open file's I/O descriptor, and return previous value.
+ */
+int
+TIFFSetFileno(TIFF* tif, int fd)
+{
+        int old_fd = tif->tif_fd;
+	tif->tif_fd = fd;
+	return old_fd;
+}
+
+/*
+ * Return open file's clientdata.
+ */
+thandle_t
+TIFFClientdata(TIFF* tif)
+{
+	return (tif->tif_clientdata);
+}
+
+/*
+ * Set open file's clientdata, and return previous value.
+ */
+thandle_t
+TIFFSetClientdata(TIFF* tif, thandle_t newvalue)
+{
+	thandle_t m = tif->tif_clientdata;
+	tif->tif_clientdata = newvalue;
+	return m;
+}
+
+/*
+ * Return read/write mode.
+ */
+int
+TIFFGetMode(TIFF* tif)
+{
+	return (tif->tif_mode);
+}
+
+/*
+ * Return read/write mode.
+ */
+int
+TIFFSetMode(TIFF* tif, int mode)
+{
+	int old_mode = tif->tif_mode;
+	tif->tif_mode = mode;
+	return (old_mode);
+}
+
+/*
+ * Return nonzero if file is organized in
+ * tiles; zero if organized as strips.
+ */
+int
+TIFFIsTiled(TIFF* tif)
+{
+	return (isTiled(tif));
+}
+
+/*
+ * Return current row being read/written.
+ */
+uint32
+TIFFCurrentRow(TIFF* tif)
+{
+	return (tif->tif_row);
+}
+
+/*
+ * Return index of the current directory.
+ */
+tdir_t
+TIFFCurrentDirectory(TIFF* tif)
+{
+	return (tif->tif_curdir);
+}
+
+/*
+ * Return current strip.
+ */
+tstrip_t
+TIFFCurrentStrip(TIFF* tif)
+{
+	return (tif->tif_curstrip);
+}
+
+/*
+ * Return current tile.
+ */
+ttile_t
+TIFFCurrentTile(TIFF* tif)
+{
+	return (tif->tif_curtile);
+}
+
+/*
+ * Return nonzero if the file has byte-swapped data.
+ */
+int
+TIFFIsByteSwapped(TIFF* tif)
+{
+	return ((tif->tif_flags & TIFF_SWAB) != 0);
+}
+
+/*
+ * Return nonzero if the data is returned up-sampled.
+ */
+int
+TIFFIsUpSampled(TIFF* tif)
+{
+	return (isUpSampled(tif));
+}
+
+/*
+ * Return nonzero if the data is returned in MSB-to-LSB bit order.
+ */
+int
+TIFFIsMSB2LSB(TIFF* tif)
+{
+	return (isFillOrder(tif, FILLORDER_MSB2LSB));
+}
+
+/*
+ * Return nonzero if given file was written in big-endian order.
+ */
+int
+TIFFIsBigEndian(TIFF* tif)
+{
+	return (tif->tif_header.tiff_magic == TIFF_BIGENDIAN);
+}
+
+/*
+ * Return pointer to file read method.
+ */
+TIFFReadWriteProc
+TIFFGetReadProc(TIFF* tif)
+{
+	return (tif->tif_readproc);
+}
+
+/*
+ * Return pointer to file write method.
+ */
+TIFFReadWriteProc
+TIFFGetWriteProc(TIFF* tif)
+{
+	return (tif->tif_writeproc);
+}
+
+/*
+ * Return pointer to file seek method.
+ */
+TIFFSeekProc
+TIFFGetSeekProc(TIFF* tif)
+{
+	return (tif->tif_seekproc);
+}
+
+/*
+ * Return pointer to file close method.
+ */
+TIFFCloseProc
+TIFFGetCloseProc(TIFF* tif)
+{
+	return (tif->tif_closeproc);
+}
+
+/*
+ * Return pointer to file size requesting method.
+ */
+TIFFSizeProc
+TIFFGetSizeProc(TIFF* tif)
+{
+	return (tif->tif_sizeproc);
+}
+
+/*
+ * Return pointer to memory mapping method.
+ */
+TIFFMapFileProc
+TIFFGetMapFileProc(TIFF* tif)
+{
+	return (tif->tif_mapproc);
+}
+
+/*
+ * Return pointer to memory unmapping method.
+ */
+TIFFUnmapFileProc
+TIFFGetUnmapFileProc(TIFF* tif)
+{
+	return (tif->tif_unmapproc);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_packbits.c b/src/libtiff/tif_packbits.c
new file mode 100644
index 0000000..644d0e5
--- /dev/null
+++ b/src/libtiff/tif_packbits.c
@@ -0,0 +1,293 @@
+/* $Id: tif_packbits.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef PACKBITS_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * PackBits Compression Algorithm Support
+ */
+#include <stdio.h>
+
+static int
+PackBitsPreEncode(TIFF* tif, tsample_t s)
+{
+	(void) s;
+
+        if (!(tif->tif_data = (tidata_t)_TIFFmalloc(sizeof(tsize_t))))
+		return (0);
+	/*
+	 * Calculate the scanline/tile-width size in bytes.
+	 */
+	if (isTiled(tif))
+		*(tsize_t*)tif->tif_data = TIFFTileRowSize(tif);
+	else
+		*(tsize_t*)tif->tif_data = TIFFScanlineSize(tif);
+	return (1);
+}
+
+static int
+PackBitsPostEncode(TIFF* tif)
+{
+        if (tif->tif_data)
+            _TIFFfree(tif->tif_data);
+	return (1);
+}
+
+/*
+ * NB: tidata is the type representing *(tidata_t);
+ *     if tidata_t is made signed then this type must
+ *     be adjusted accordingly.
+ */
+typedef unsigned char tidata;
+
+/*
+ * Encode a run of pixels.
+ */
+static int
+PackBitsEncode(TIFF* tif, tidata_t buf, tsize_t cc, tsample_t s)
+{
+	unsigned char* bp = (unsigned char*) buf;
+	tidata_t op, ep, lastliteral;
+	long n, slop;
+	int b;
+	enum { BASE, LITERAL, RUN, LITERAL_RUN } state;
+
+	(void) s;
+	op = tif->tif_rawcp;
+	ep = tif->tif_rawdata + tif->tif_rawdatasize;
+	state = BASE;
+	lastliteral = 0;
+	while (cc > 0) {
+		/*
+		 * Find the longest string of identical bytes.
+		 */
+		b = *bp++, cc--, n = 1;
+		for (; cc > 0 && b == *bp; cc--, bp++)
+			n++;
+	again:
+		if (op + 2 >= ep) {		/* insure space for new data */
+			/*
+			 * Be careful about writing the last
+			 * literal.  Must write up to that point
+			 * and then copy the remainder to the
+			 * front of the buffer.
+			 */
+			if (state == LITERAL || state == LITERAL_RUN) {
+				slop = op - lastliteral;
+				tif->tif_rawcc += lastliteral - tif->tif_rawcp;
+				if (!TIFFFlushData1(tif))
+					return (-1);
+				op = tif->tif_rawcp;
+				while (slop-- > 0)
+					*op++ = *lastliteral++;
+				lastliteral = tif->tif_rawcp;
+			} else {
+				tif->tif_rawcc += op - tif->tif_rawcp;
+				if (!TIFFFlushData1(tif))
+					return (-1);
+				op = tif->tif_rawcp;
+			}
+		}
+		switch (state) {
+		case BASE:		/* initial state, set run/literal */
+			if (n > 1) {
+				state = RUN;
+				if (n > 128) {
+					*op++ = (tidata) -127;
+					*op++ = (tidataval_t) b;
+					n -= 128;
+					goto again;
+				}
+				*op++ = (tidataval_t)(-(n-1));
+				*op++ = (tidataval_t) b;
+			} else {
+				lastliteral = op;
+				*op++ = 0;
+				*op++ = (tidataval_t) b;
+				state = LITERAL;
+			}
+			break;
+		case LITERAL:		/* last object was literal string */
+			if (n > 1) {
+				state = LITERAL_RUN;
+				if (n > 128) {
+					*op++ = (tidata) -127;
+					*op++ = (tidataval_t) b;
+					n -= 128;
+					goto again;
+				}
+				*op++ = (tidataval_t)(-(n-1));	/* encode run */
+				*op++ = (tidataval_t) b;
+			} else {			/* extend literal */
+				if (++(*lastliteral) == 127)
+					state = BASE;
+				*op++ = (tidataval_t) b;
+			}
+			break;
+		case RUN:		/* last object was run */
+			if (n > 1) {
+				if (n > 128) {
+					*op++ = (tidata) -127;
+					*op++ = (tidataval_t) b;
+					n -= 128;
+					goto again;
+				}
+				*op++ = (tidataval_t)(-(n-1));
+				*op++ = (tidataval_t) b;
+			} else {
+				lastliteral = op;
+				*op++ = 0;
+				*op++ = (tidataval_t) b;
+				state = LITERAL;
+			}
+			break;
+		case LITERAL_RUN:	/* literal followed by a run */
+			/*
+			 * Check to see if previous run should
+			 * be converted to a literal, in which
+			 * case we convert literal-run-literal
+			 * to a single literal.
+			 */
+			if (n == 1 && op[-2] == (tidata) -1 &&
+			    *lastliteral < 126) {
+				state = (((*lastliteral) += 2) == 127 ?
+				    BASE : LITERAL);
+				op[-2] = op[-1];	/* replicate */
+			} else
+				state = RUN;
+			goto again;
+		}
+	}
+	tif->tif_rawcc += op - tif->tif_rawcp;
+	tif->tif_rawcp = op;
+	return (1);
+}
+
+/*
+ * Encode a rectangular chunk of pixels.  We break it up
+ * into row-sized pieces to insure that encoded runs do
+ * not span rows.  Otherwise, there can be problems with
+ * the decoder if data is read, for example, by scanlines
+ * when it was encoded by strips.
+ */
+static int
+PackBitsEncodeChunk(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	tsize_t rowsize = *(tsize_t*)tif->tif_data;
+
+	while ((long)cc > 0) {
+		int	chunk = rowsize;
+		
+		if( cc < chunk )
+		    chunk = cc;
+
+		if (PackBitsEncode(tif, bp, chunk, s) < 0)
+		    return (-1);
+		bp += chunk;
+		cc -= chunk;
+	}
+	return (1);
+}
+
+static int
+PackBitsDecode(TIFF* tif, tidata_t op, tsize_t occ, tsample_t s)
+{
+	char *bp;
+	tsize_t cc;
+	long n;
+	int b;
+
+	(void) s;
+	bp = (char*) tif->tif_rawcp;
+	cc = tif->tif_rawcc;
+	while (cc > 0 && (long)occ > 0) {
+		n = (long) *bp++, cc--;
+		/*
+		 * Watch out for compilers that
+		 * don't sign extend chars...
+		 */
+		if (n >= 128)
+			n -= 256;
+		if (n < 0) {		/* replicate next byte -n+1 times */
+			if (n == -128)	/* nop */
+				continue;
+                        n = -n + 1;
+                        if( occ < n )
+                        {
+							TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+                                        "PackBitsDecode: discarding %d bytes "
+                                        "to avoid buffer overrun",
+                                        n - occ);
+                            n = occ;
+                        }
+			occ -= n;
+			b = *bp++, cc--;
+			while (n-- > 0)
+				*op++ = (tidataval_t) b;
+		} else {		/* copy next n+1 bytes literally */
+			if (occ < n + 1)
+                        {
+                            TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+                                        "PackBitsDecode: discarding %d bytes "
+                                        "to avoid buffer overrun",
+                                        n - occ + 1);
+                            n = occ - 1;
+                        }
+                        _TIFFmemcpy(op, bp, ++n);
+			op += n; occ -= n;
+			bp += n; cc -= n;
+		}
+	}
+	tif->tif_rawcp = (tidata_t) bp;
+	tif->tif_rawcc = cc;
+	if (occ > 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "PackBitsDecode: Not enough data for scanline %ld",
+		    (long) tif->tif_row);
+		return (0);
+	}
+	return (1);
+}
+
+int
+TIFFInitPackBits(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	tif->tif_decoderow = PackBitsDecode;
+	tif->tif_decodestrip = PackBitsDecode;
+	tif->tif_decodetile = PackBitsDecode;
+	tif->tif_preencode = PackBitsPreEncode;
+        tif->tif_postencode = PackBitsPostEncode;
+	tif->tif_encoderow = PackBitsEncode;
+	tif->tif_encodestrip = PackBitsEncodeChunk;
+	tif->tif_encodetile = PackBitsEncodeChunk;
+	return (1);
+}
+#endif /* PACKBITS_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_pixarlog.c b/src/libtiff/tif_pixarlog.c
new file mode 100644
index 0000000..b7acbaa
--- /dev/null
+++ b/src/libtiff/tif_pixarlog.c
@@ -0,0 +1,1342 @@
+/* $Id: tif_pixarlog.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1996-1997 Sam Leffler
+ * Copyright (c) 1996 Pixar
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Pixar, Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Pixar, Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL PIXAR, SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef PIXARLOG_SUPPORT
+
+/*
+ * TIFF Library.
+ * PixarLog Compression Support
+ *
+ * Contributed by Dan McCoy.
+ *
+ * PixarLog film support uses the TIFF library to store companded
+ * 11 bit values into a tiff file, which are compressed using the 
+ * zip compressor.  
+ *
+ * The codec can take as input and produce as output 32-bit IEEE float values 
+ * as well as 16-bit or 8-bit unsigned integer values.
+ *
+ * On writing any of the above are converted into the internal
+ * 11-bit log format.   In the case of  8 and 16 bit values, the
+ * input is assumed to be unsigned linear color values that represent
+ * the range 0-1.  In the case of IEEE values, the 0-1 range is assumed to
+ * be the normal linear color range, in addition over 1 values are
+ * accepted up to a value of about 25.0 to encode "hot" hightlights and such.
+ * The encoding is lossless for 8-bit values, slightly lossy for the
+ * other bit depths.  The actual color precision should be better
+ * than the human eye can perceive with extra room to allow for
+ * error introduced by further image computation.  As with any quantized
+ * color format, it is possible to perform image calculations which
+ * expose the quantization error. This format should certainly be less 
+ * susceptable to such errors than standard 8-bit encodings, but more
+ * susceptable than straight 16-bit or 32-bit encodings.
+ *
+ * On reading the internal format is converted to the desired output format.
+ * The program can request which format it desires by setting the internal
+ * pseudo tag TIFFTAG_PIXARLOGDATAFMT to one of these possible values:
+ *  PIXARLOGDATAFMT_FLOAT     = provide IEEE float values.
+ *  PIXARLOGDATAFMT_16BIT     = provide unsigned 16-bit integer values
+ *  PIXARLOGDATAFMT_8BIT      = provide unsigned 8-bit integer values
+ *
+ * alternately PIXARLOGDATAFMT_8BITABGR provides unsigned 8-bit integer
+ * values with the difference that if there are exactly three or four channels
+ * (rgb or rgba) it swaps the channel order (bgr or abgr).
+ *
+ * PIXARLOGDATAFMT_11BITLOG provides the internal encoding directly
+ * packed in 16-bit values.   However no tools are supplied for interpreting
+ * these values.
+ *
+ * "hot" (over 1.0) areas written in floating point get clamped to
+ * 1.0 in the integer data types.
+ *
+ * When the file is closed after writing, the bit depth and sample format
+ * are set always to appear as if 8-bit data has been written into it.
+ * That way a naive program unaware of the particulars of the encoding
+ * gets the format it is most likely able to handle.
+ *
+ * The codec does it's own horizontal differencing step on the coded
+ * values so the libraries predictor stuff should be turned off.
+ * The codec also handle byte swapping the encoded values as necessary
+ * since the library does not have the information necessary
+ * to know the bit depth of the raw unencoded buffer.
+ * 
+ */
+
+#include "tif_predict.h"
+#include "zlib.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+/* Tables for converting to/from 11 bit coded values */
+
+#define  TSIZE	 2048		/* decode table size (11-bit tokens) */
+#define  TSIZEP1 2049		/* Plus one for slop */
+#define  ONE	 1250		/* token value of 1.0 exactly */
+#define  RATIO	 1.004		/* nominal ratio for log part */
+
+#define CODE_MASK 0x7ff         /* 11 bits. */
+
+static float  Fltsize;
+static float  LogK1, LogK2;
+
+#define REPEAT(n, op)   { int i; i=n; do { i--; op; } while (i>0); }
+
+static void
+horizontalAccumulateF(uint16 *wp, int n, int stride, float *op, 
+	float *ToLinearF)
+{
+    register unsigned int  cr, cg, cb, ca, mask;
+    register float  t0, t1, t2, t3;
+
+    if (n >= stride) {
+	mask = CODE_MASK;
+	if (stride == 3) {
+	    t0 = ToLinearF[cr = wp[0]];
+	    t1 = ToLinearF[cg = wp[1]];
+	    t2 = ToLinearF[cb = wp[2]];
+	    op[0] = t0;
+	    op[1] = t1;
+	    op[2] = t2;
+	    n -= 3;
+	    while (n > 0) {
+		wp += 3;
+		op += 3;
+		n -= 3;
+		t0 = ToLinearF[(cr += wp[0]) & mask];
+		t1 = ToLinearF[(cg += wp[1]) & mask];
+		t2 = ToLinearF[(cb += wp[2]) & mask];
+		op[0] = t0;
+		op[1] = t1;
+		op[2] = t2;
+	    }
+	} else if (stride == 4) {
+	    t0 = ToLinearF[cr = wp[0]];
+	    t1 = ToLinearF[cg = wp[1]];
+	    t2 = ToLinearF[cb = wp[2]];
+	    t3 = ToLinearF[ca = wp[3]];
+	    op[0] = t0;
+	    op[1] = t1;
+	    op[2] = t2;
+	    op[3] = t3;
+	    n -= 4;
+	    while (n > 0) {
+		wp += 4;
+		op += 4;
+		n -= 4;
+		t0 = ToLinearF[(cr += wp[0]) & mask];
+		t1 = ToLinearF[(cg += wp[1]) & mask];
+		t2 = ToLinearF[(cb += wp[2]) & mask];
+		t3 = ToLinearF[(ca += wp[3]) & mask];
+		op[0] = t0;
+		op[1] = t1;
+		op[2] = t2;
+		op[3] = t3;
+	    }
+	} else {
+	    REPEAT(stride, *op = ToLinearF[*wp&mask]; wp++; op++)
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride,
+		    wp[stride] += *wp; *op = ToLinearF[*wp&mask]; wp++; op++)
+		n -= stride;
+	    }
+	}
+    }
+}
+
+static void
+horizontalAccumulate12(uint16 *wp, int n, int stride, int16 *op,
+	float *ToLinearF)
+{
+    register unsigned int  cr, cg, cb, ca, mask;
+    register float  t0, t1, t2, t3;
+
+#define SCALE12 2048.0F
+#define CLAMP12(t) (((t) < 3071) ? (uint16) (t) : 3071)
+
+    if (n >= stride) {
+	mask = CODE_MASK;
+	if (stride == 3) {
+	    t0 = ToLinearF[cr = wp[0]] * SCALE12;
+	    t1 = ToLinearF[cg = wp[1]] * SCALE12;
+	    t2 = ToLinearF[cb = wp[2]] * SCALE12;
+	    op[0] = CLAMP12(t0);
+	    op[1] = CLAMP12(t1);
+	    op[2] = CLAMP12(t2);
+	    n -= 3;
+	    while (n > 0) {
+		wp += 3;
+		op += 3;
+		n -= 3;
+		t0 = ToLinearF[(cr += wp[0]) & mask] * SCALE12;
+		t1 = ToLinearF[(cg += wp[1]) & mask] * SCALE12;
+		t2 = ToLinearF[(cb += wp[2]) & mask] * SCALE12;
+		op[0] = CLAMP12(t0);
+		op[1] = CLAMP12(t1);
+		op[2] = CLAMP12(t2);
+	    }
+	} else if (stride == 4) {
+	    t0 = ToLinearF[cr = wp[0]] * SCALE12;
+	    t1 = ToLinearF[cg = wp[1]] * SCALE12;
+	    t2 = ToLinearF[cb = wp[2]] * SCALE12;
+	    t3 = ToLinearF[ca = wp[3]] * SCALE12;
+	    op[0] = CLAMP12(t0);
+	    op[1] = CLAMP12(t1);
+	    op[2] = CLAMP12(t2);
+	    op[3] = CLAMP12(t3);
+	    n -= 4;
+	    while (n > 0) {
+		wp += 4;
+		op += 4;
+		n -= 4;
+		t0 = ToLinearF[(cr += wp[0]) & mask] * SCALE12;
+		t1 = ToLinearF[(cg += wp[1]) & mask] * SCALE12;
+		t2 = ToLinearF[(cb += wp[2]) & mask] * SCALE12;
+		t3 = ToLinearF[(ca += wp[3]) & mask] * SCALE12;
+		op[0] = CLAMP12(t0);
+		op[1] = CLAMP12(t1);
+		op[2] = CLAMP12(t2);
+		op[3] = CLAMP12(t3);
+	    }
+	} else {
+	    REPEAT(stride, t0 = ToLinearF[*wp&mask] * SCALE12;
+                           *op = CLAMP12(t0); wp++; op++)
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride,
+		    wp[stride] += *wp; t0 = ToLinearF[wp[stride]&mask]*SCALE12;
+		    *op = CLAMP12(t0);  wp++; op++)
+		n -= stride;
+	    }
+	}
+    }
+}
+
+static void
+horizontalAccumulate16(uint16 *wp, int n, int stride, uint16 *op,
+	uint16 *ToLinear16)
+{
+    register unsigned int  cr, cg, cb, ca, mask;
+
+    if (n >= stride) {
+	mask = CODE_MASK;
+	if (stride == 3) {
+	    op[0] = ToLinear16[cr = wp[0]];
+	    op[1] = ToLinear16[cg = wp[1]];
+	    op[2] = ToLinear16[cb = wp[2]];
+	    n -= 3;
+	    while (n > 0) {
+		wp += 3;
+		op += 3;
+		n -= 3;
+		op[0] = ToLinear16[(cr += wp[0]) & mask];
+		op[1] = ToLinear16[(cg += wp[1]) & mask];
+		op[2] = ToLinear16[(cb += wp[2]) & mask];
+	    }
+	} else if (stride == 4) {
+	    op[0] = ToLinear16[cr = wp[0]];
+	    op[1] = ToLinear16[cg = wp[1]];
+	    op[2] = ToLinear16[cb = wp[2]];
+	    op[3] = ToLinear16[ca = wp[3]];
+	    n -= 4;
+	    while (n > 0) {
+		wp += 4;
+		op += 4;
+		n -= 4;
+		op[0] = ToLinear16[(cr += wp[0]) & mask];
+		op[1] = ToLinear16[(cg += wp[1]) & mask];
+		op[2] = ToLinear16[(cb += wp[2]) & mask];
+		op[3] = ToLinear16[(ca += wp[3]) & mask];
+	    }
+	} else {
+	    REPEAT(stride, *op = ToLinear16[*wp&mask]; wp++; op++)
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride,
+		    wp[stride] += *wp; *op = ToLinear16[*wp&mask]; wp++; op++)
+		n -= stride;
+	    }
+	}
+    }
+}
+
+/* 
+ * Returns the log encoded 11-bit values with the horizontal
+ * differencing undone.
+ */
+static void
+horizontalAccumulate11(uint16 *wp, int n, int stride, uint16 *op)
+{
+    register unsigned int  cr, cg, cb, ca, mask;
+
+    if (n >= stride) {
+	mask = CODE_MASK;
+	if (stride == 3) {
+	    op[0] = cr = wp[0];  op[1] = cg = wp[1];  op[2] = cb = wp[2];
+	    n -= 3;
+	    while (n > 0) {
+		wp += 3;
+		op += 3;
+		n -= 3;
+		op[0] = (cr += wp[0]) & mask;
+		op[1] = (cg += wp[1]) & mask;
+		op[2] = (cb += wp[2]) & mask;
+	    }
+	} else if (stride == 4) {
+	    op[0] = cr = wp[0];  op[1] = cg = wp[1];
+	    op[2] = cb = wp[2];  op[3] = ca = wp[3];
+	    n -= 4;
+	    while (n > 0) {
+		wp += 4;
+		op += 4;
+		n -= 4;
+		op[0] = (cr += wp[0]) & mask;
+		op[1] = (cg += wp[1]) & mask;
+		op[2] = (cb += wp[2]) & mask;
+		op[3] = (ca += wp[3]) & mask;
+	    } 
+	} else {
+	    REPEAT(stride, *op = *wp&mask; wp++; op++)
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride,
+		    wp[stride] += *wp; *op = *wp&mask; wp++; op++)
+	    	n -= stride;
+	    }
+	}
+    }
+}
+
+static void
+horizontalAccumulate8(uint16 *wp, int n, int stride, unsigned char *op,
+	unsigned char *ToLinear8)
+{
+    register unsigned int  cr, cg, cb, ca, mask;
+
+    if (n >= stride) {
+	mask = CODE_MASK;
+	if (stride == 3) {
+	    op[0] = ToLinear8[cr = wp[0]];
+	    op[1] = ToLinear8[cg = wp[1]];
+	    op[2] = ToLinear8[cb = wp[2]];
+	    n -= 3;
+	    while (n > 0) {
+		n -= 3;
+		wp += 3;
+		op += 3;
+		op[0] = ToLinear8[(cr += wp[0]) & mask];
+		op[1] = ToLinear8[(cg += wp[1]) & mask];
+		op[2] = ToLinear8[(cb += wp[2]) & mask];
+	    }
+	} else if (stride == 4) {
+	    op[0] = ToLinear8[cr = wp[0]];
+	    op[1] = ToLinear8[cg = wp[1]];
+	    op[2] = ToLinear8[cb = wp[2]];
+	    op[3] = ToLinear8[ca = wp[3]];
+	    n -= 4;
+	    while (n > 0) {
+		n -= 4;
+		wp += 4;
+		op += 4;
+		op[0] = ToLinear8[(cr += wp[0]) & mask];
+		op[1] = ToLinear8[(cg += wp[1]) & mask];
+		op[2] = ToLinear8[(cb += wp[2]) & mask];
+		op[3] = ToLinear8[(ca += wp[3]) & mask];
+	    }
+	} else {
+	    REPEAT(stride, *op = ToLinear8[*wp&mask]; wp++; op++)
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride,
+		    wp[stride] += *wp; *op = ToLinear8[*wp&mask]; wp++; op++)
+		n -= stride;
+	    }
+	}
+    }
+}
+
+
+static void
+horizontalAccumulate8abgr(uint16 *wp, int n, int stride, unsigned char *op,
+	unsigned char *ToLinear8)
+{
+    register unsigned int  cr, cg, cb, ca, mask;
+    register unsigned char  t0, t1, t2, t3;
+
+    if (n >= stride) {
+	mask = CODE_MASK;
+	if (stride == 3) {
+	    op[0] = 0;
+	    t1 = ToLinear8[cb = wp[2]];
+	    t2 = ToLinear8[cg = wp[1]];
+	    t3 = ToLinear8[cr = wp[0]];
+	    op[1] = t1;
+	    op[2] = t2;
+	    op[3] = t3;
+	    n -= 3;
+	    while (n > 0) {
+		n -= 3;
+		wp += 3;
+		op += 4;
+		op[0] = 0;
+		t1 = ToLinear8[(cb += wp[2]) & mask];
+		t2 = ToLinear8[(cg += wp[1]) & mask];
+		t3 = ToLinear8[(cr += wp[0]) & mask];
+		op[1] = t1;
+		op[2] = t2;
+		op[3] = t3;
+	    }
+	} else if (stride == 4) {
+	    t0 = ToLinear8[ca = wp[3]];
+	    t1 = ToLinear8[cb = wp[2]];
+	    t2 = ToLinear8[cg = wp[1]];
+	    t3 = ToLinear8[cr = wp[0]];
+	    op[0] = t0;
+	    op[1] = t1;
+	    op[2] = t2;
+	    op[3] = t3;
+	    n -= 4;
+	    while (n > 0) {
+		n -= 4;
+		wp += 4;
+		op += 4;
+		t0 = ToLinear8[(ca += wp[3]) & mask];
+		t1 = ToLinear8[(cb += wp[2]) & mask];
+		t2 = ToLinear8[(cg += wp[1]) & mask];
+		t3 = ToLinear8[(cr += wp[0]) & mask];
+		op[0] = t0;
+		op[1] = t1;
+		op[2] = t2;
+		op[3] = t3;
+	    }
+	} else {
+	    REPEAT(stride, *op = ToLinear8[*wp&mask]; wp++; op++)
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride,
+		    wp[stride] += *wp; *op = ToLinear8[*wp&mask]; wp++; op++)
+		n -= stride;
+	    }
+	}
+    }
+}
+
+/*
+ * State block for each open TIFF
+ * file using PixarLog compression/decompression.
+ */
+typedef	struct {
+	TIFFPredictorState	predict;
+	z_stream		stream;
+	uint16			*tbuf; 
+	uint16			stride;
+	int			state;
+	int			user_datafmt;
+	int			quality;
+#define PLSTATE_INIT 1
+
+	TIFFVSetMethod		vgetparent;	/* super-class method */
+	TIFFVSetMethod		vsetparent;	/* super-class method */
+
+	float *ToLinearF;
+	uint16 *ToLinear16;
+	unsigned char *ToLinear8;
+	uint16  *FromLT2;
+	uint16  *From14; /* Really for 16-bit data, but we shift down 2 */
+	uint16  *From8;
+	
+} PixarLogState;
+
+static int
+PixarLogMakeTables(PixarLogState *sp)
+{
+
+/*
+ *    We make several tables here to convert between various external
+ *    representations (float, 16-bit, and 8-bit) and the internal
+ *    11-bit companded representation.  The 11-bit representation has two
+ *    distinct regions.  A linear bottom end up through .018316 in steps
+ *    of about .000073, and a region of constant ratio up to about 25.
+ *    These floating point numbers are stored in the main table ToLinearF. 
+ *    All other tables are derived from this one.  The tables (and the
+ *    ratios) are continuous at the internal seam.
+ */
+
+    int  nlin, lt2size;
+    int  i, j;
+    double  b, c, linstep, v;
+    float *ToLinearF;
+    uint16 *ToLinear16;
+    unsigned char *ToLinear8;
+    uint16  *FromLT2;
+    uint16  *From14; /* Really for 16-bit data, but we shift down 2 */
+    uint16  *From8;
+
+    c = log(RATIO);	
+    nlin = (int)(1./c);	/* nlin must be an integer */
+    c = 1./nlin;
+    b = exp(-c*ONE);	/* multiplicative scale factor [b*exp(c*ONE) = 1] */
+    linstep = b*c*exp(1.);
+
+    LogK1 = (float)(1./c);	/* if (v >= 2)  token = k1*log(v*k2) */
+    LogK2 = (float)(1./b);
+    lt2size = (int)(2./linstep) + 1;
+    FromLT2 = (uint16 *)_TIFFmalloc(lt2size*sizeof(uint16));
+    From14 = (uint16 *)_TIFFmalloc(16384*sizeof(uint16));
+    From8 = (uint16 *)_TIFFmalloc(256*sizeof(uint16));
+    ToLinearF = (float *)_TIFFmalloc(TSIZEP1 * sizeof(float));
+    ToLinear16 = (uint16 *)_TIFFmalloc(TSIZEP1 * sizeof(uint16));
+    ToLinear8 = (unsigned char *)_TIFFmalloc(TSIZEP1 * sizeof(unsigned char));
+    if (FromLT2 == NULL || From14  == NULL || From8   == NULL ||
+	 ToLinearF == NULL || ToLinear16 == NULL || ToLinear8 == NULL) {
+	if (FromLT2) _TIFFfree(FromLT2);
+	if (From14) _TIFFfree(From14);
+	if (From8) _TIFFfree(From8);
+	if (ToLinearF) _TIFFfree(ToLinearF);
+	if (ToLinear16) _TIFFfree(ToLinear16);
+	if (ToLinear8) _TIFFfree(ToLinear8);
+	sp->FromLT2 = NULL;
+	sp->From14 = NULL;
+	sp->From8 = NULL;
+	sp->ToLinearF = NULL;
+	sp->ToLinear16 = NULL;
+	sp->ToLinear8 = NULL;
+	return 0;
+    }
+
+    j = 0;
+
+    for (i = 0; i < nlin; i++)  {
+	v = i * linstep;
+	ToLinearF[j++] = (float)v;
+    }
+
+    for (i = nlin; i < TSIZE; i++)
+	ToLinearF[j++] = (float)(b*exp(c*i));
+
+    ToLinearF[2048] = ToLinearF[2047];
+
+    for (i = 0; i < TSIZEP1; i++)  {
+	v = ToLinearF[i]*65535.0 + 0.5;
+	ToLinear16[i] = (v > 65535.0) ? 65535 : (uint16)v;
+	v = ToLinearF[i]*255.0  + 0.5;
+	ToLinear8[i]  = (v > 255.0) ? 255 : (unsigned char)v;
+    }
+
+    j = 0;
+    for (i = 0; i < lt2size; i++)  {
+	if ((i*linstep)*(i*linstep) > ToLinearF[j]*ToLinearF[j+1])
+	    j++;
+	FromLT2[i] = j;
+    }
+
+    /*
+     * Since we lose info anyway on 16-bit data, we set up a 14-bit
+     * table and shift 16-bit values down two bits on input.
+     * saves a little table space.
+     */
+    j = 0;
+    for (i = 0; i < 16384; i++)  {
+	while ((i/16383.)*(i/16383.) > ToLinearF[j]*ToLinearF[j+1])
+	    j++;
+	From14[i] = j;
+    }
+
+    j = 0;
+    for (i = 0; i < 256; i++)  {
+	while ((i/255.)*(i/255.) > ToLinearF[j]*ToLinearF[j+1])
+	    j++;
+	From8[i] = j;
+    }
+
+    Fltsize = (float)(lt2size/2);
+
+    sp->ToLinearF = ToLinearF;
+    sp->ToLinear16 = ToLinear16;
+    sp->ToLinear8 = ToLinear8;
+    sp->FromLT2 = FromLT2;
+    sp->From14 = From14;
+    sp->From8 = From8;
+
+    return 1;
+}
+
+#define	DecoderState(tif)	((PixarLogState*) (tif)->tif_data)
+#define	EncoderState(tif)	((PixarLogState*) (tif)->tif_data)
+
+static	int PixarLogEncode(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int PixarLogDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+
+#define N(a)   (sizeof(a)/sizeof(a[0]))
+#define PIXARLOGDATAFMT_UNKNOWN	-1
+
+static int
+PixarLogGuessDataFmt(TIFFDirectory *td)
+{
+	int guess = PIXARLOGDATAFMT_UNKNOWN;
+	int format = td->td_sampleformat;
+
+	/* If the user didn't tell us his datafmt,
+	 * take our best guess from the bitspersample.
+	 */
+	switch (td->td_bitspersample) {
+	 case 32:
+		if (format == SAMPLEFORMAT_IEEEFP)
+			guess = PIXARLOGDATAFMT_FLOAT;
+		break;
+	 case 16:
+		if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_UINT)
+			guess = PIXARLOGDATAFMT_16BIT;
+		break;
+	 case 12:
+		if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_INT)
+			guess = PIXARLOGDATAFMT_12BITPICIO;
+		break;
+	 case 11:
+		if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_UINT)
+			guess = PIXARLOGDATAFMT_11BITLOG;
+		break;
+	 case 8:
+		if (format == SAMPLEFORMAT_VOID || format == SAMPLEFORMAT_UINT)
+			guess = PIXARLOGDATAFMT_8BIT;
+		break;
+	}
+
+	return guess;
+}
+
+static uint32
+multiply(size_t m1, size_t m2)
+{
+	uint32	bytes = m1 * m2;
+
+	if (m1 && bytes / m1 != m2)
+		bytes = 0;
+
+	return bytes;
+}
+
+static int
+PixarLogSetupDecode(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	PixarLogState* sp = DecoderState(tif);
+	tsize_t tbuf_size;
+	static const char module[] = "PixarLogSetupDecode";
+
+	assert(sp != NULL);
+
+	/* Make sure no byte swapping happens on the data
+	 * after decompression. */
+	tif->tif_postdecode = _TIFFNoPostDecode;
+
+	/* for some reason, we can't do this in TIFFInitPixarLog */
+
+	sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+	    td->td_samplesperpixel : 1);
+	tbuf_size = multiply(multiply(multiply(sp->stride, td->td_imagewidth),
+				      td->td_rowsperstrip), sizeof(uint16));
+	if (tbuf_size == 0)
+		return (0);
+	sp->tbuf = (uint16 *) _TIFFmalloc(tbuf_size);
+	if (sp->tbuf == NULL)
+		return (0);
+	if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN)
+		sp->user_datafmt = PixarLogGuessDataFmt(td);
+	if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+			"PixarLog compression can't handle bits depth/data format combination (depth: %d)", 
+			td->td_bitspersample);
+		return (0);
+	}
+
+	if (inflateInit(&sp->stream) != Z_OK) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: %s", tif->tif_name, sp->stream.msg);
+		return (0);
+	} else {
+		sp->state |= PLSTATE_INIT;
+		return (1);
+	}
+}
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+PixarLogPreDecode(TIFF* tif, tsample_t s)
+{
+	PixarLogState* sp = DecoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	sp->stream.next_in = tif->tif_rawdata;
+	sp->stream.avail_in = tif->tif_rawcc;
+	return (inflateReset(&sp->stream) == Z_OK);
+}
+
+static int
+PixarLogDecode(TIFF* tif, tidata_t op, tsize_t occ, tsample_t s)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	PixarLogState* sp = DecoderState(tif);
+	static const char module[] = "PixarLogDecode";
+	int i, nsamples, llen;
+	uint16 *up;
+
+	switch (sp->user_datafmt) {
+	case PIXARLOGDATAFMT_FLOAT:
+		nsamples = occ / sizeof(float);	/* XXX float == 32 bits */
+		break;
+	case PIXARLOGDATAFMT_16BIT:
+	case PIXARLOGDATAFMT_12BITPICIO:
+	case PIXARLOGDATAFMT_11BITLOG:
+		nsamples = occ / sizeof(uint16); /* XXX uint16 == 16 bits */
+		break;
+	case PIXARLOGDATAFMT_8BIT:
+	case PIXARLOGDATAFMT_8BITABGR:
+		nsamples = occ;
+		break;
+	default:
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			"%d bit input not supported in PixarLog",
+			td->td_bitspersample);
+		return 0;
+	}
+
+	llen = sp->stride * td->td_imagewidth;
+
+	(void) s;
+	assert(sp != NULL);
+	sp->stream.next_out = (unsigned char *) sp->tbuf;
+	sp->stream.avail_out = nsamples * sizeof(uint16);
+	do {
+		int state = inflate(&sp->stream, Z_PARTIAL_FLUSH);
+		if (state == Z_STREAM_END) {
+			break;			/* XXX */
+		}
+		if (state == Z_DATA_ERROR) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Decoding error at scanline %d, %s",
+			    tif->tif_name, tif->tif_row, sp->stream.msg);
+			if (inflateSync(&sp->stream) != Z_OK)
+				return (0);
+			continue;
+		}
+		if (state != Z_OK) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
+			    tif->tif_name, sp->stream.msg);
+			return (0);
+		}
+	} while (sp->stream.avail_out > 0);
+
+	/* hopefully, we got all the bytes we needed */
+	if (sp->stream.avail_out != 0) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+		    "%s: Not enough data at scanline %d (short %d bytes)",
+		    tif->tif_name, tif->tif_row, sp->stream.avail_out);
+		return (0);
+	}
+
+	up = sp->tbuf;
+	/* Swap bytes in the data if from a different endian machine. */
+	if (tif->tif_flags & TIFF_SWAB)
+		TIFFSwabArrayOfShort(up, nsamples);
+
+	for (i = 0; i < nsamples; i += llen, up += llen) {
+		switch (sp->user_datafmt)  {
+		case PIXARLOGDATAFMT_FLOAT:
+			horizontalAccumulateF(up, llen, sp->stride,
+					(float *)op, sp->ToLinearF);
+			op += llen * sizeof(float);
+			break;
+		case PIXARLOGDATAFMT_16BIT:
+			horizontalAccumulate16(up, llen, sp->stride,
+					(uint16 *)op, sp->ToLinear16);
+			op += llen * sizeof(uint16);
+			break;
+		case PIXARLOGDATAFMT_12BITPICIO:
+			horizontalAccumulate12(up, llen, sp->stride,
+					(int16 *)op, sp->ToLinearF);
+			op += llen * sizeof(int16);
+			break;
+		case PIXARLOGDATAFMT_11BITLOG:
+			horizontalAccumulate11(up, llen, sp->stride,
+					(uint16 *)op);
+			op += llen * sizeof(uint16);
+			break;
+		case PIXARLOGDATAFMT_8BIT:
+			horizontalAccumulate8(up, llen, sp->stride,
+					(unsigned char *)op, sp->ToLinear8);
+			op += llen * sizeof(unsigned char);
+			break;
+		case PIXARLOGDATAFMT_8BITABGR:
+			horizontalAccumulate8abgr(up, llen, sp->stride,
+					(unsigned char *)op, sp->ToLinear8);
+			op += llen * sizeof(unsigned char);
+			break;
+		default:
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+				  "PixarLogDecode: unsupported bits/sample: %d", 
+				  td->td_bitspersample);
+			return (0);
+		}
+	}
+
+	return (1);
+}
+
+static int
+PixarLogSetupEncode(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	PixarLogState* sp = EncoderState(tif);
+	tsize_t tbuf_size;
+	static const char module[] = "PixarLogSetupEncode";
+
+	assert(sp != NULL);
+
+	/* for some reason, we can't do this in TIFFInitPixarLog */
+
+	sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+	    td->td_samplesperpixel : 1);
+	tbuf_size = multiply(multiply(multiply(sp->stride, td->td_imagewidth),
+				      td->td_rowsperstrip), sizeof(uint16));
+	if (tbuf_size == 0)
+		return (0);
+	sp->tbuf = (uint16 *) _TIFFmalloc(tbuf_size);
+	if (sp->tbuf == NULL)
+		return (0);
+	if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN)
+		sp->user_datafmt = PixarLogGuessDataFmt(td);
+	if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN) {
+		TIFFErrorExt(tif->tif_clientdata, module, "PixarLog compression can't handle %d bit linear encodings", td->td_bitspersample);
+		return (0);
+	}
+
+	if (deflateInit(&sp->stream, sp->quality) != Z_OK) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: %s", tif->tif_name, sp->stream.msg);
+		return (0);
+	} else {
+		sp->state |= PLSTATE_INIT;
+		return (1);
+	}
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+PixarLogPreEncode(TIFF* tif, tsample_t s)
+{
+	PixarLogState *sp = EncoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	sp->stream.next_out = tif->tif_rawdata;
+	sp->stream.avail_out = tif->tif_rawdatasize;
+	return (deflateReset(&sp->stream) == Z_OK);
+}
+
+static void
+horizontalDifferenceF(float *ip, int n, int stride, uint16 *wp, uint16 *FromLT2)
+{
+
+    int32 r1, g1, b1, a1, r2, g2, b2, a2, mask;
+    float fltsize = Fltsize;
+
+#define  CLAMP(v) ( (v<(float)0.)   ? 0				\
+		  : (v<(float)2.)   ? FromLT2[(int)(v*fltsize)]	\
+		  : (v>(float)24.2) ? 2047			\
+		  : LogK1*log(v*LogK2) + 0.5 )
+
+    mask = CODE_MASK;
+    if (n >= stride) {
+	if (stride == 3) {
+	    r2 = wp[0] = (uint16) CLAMP(ip[0]);
+	    g2 = wp[1] = (uint16) CLAMP(ip[1]);
+	    b2 = wp[2] = (uint16) CLAMP(ip[2]);
+	    n -= 3;
+	    while (n > 0) {
+		n -= 3;
+		wp += 3;
+		ip += 3;
+		r1 = (int32) CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+		g1 = (int32) CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+		b1 = (int32) CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+	    }
+	} else if (stride == 4) {
+	    r2 = wp[0] = (uint16) CLAMP(ip[0]);
+	    g2 = wp[1] = (uint16) CLAMP(ip[1]);
+	    b2 = wp[2] = (uint16) CLAMP(ip[2]);
+	    a2 = wp[3] = (uint16) CLAMP(ip[3]);
+	    n -= 4;
+	    while (n > 0) {
+		n -= 4;
+		wp += 4;
+		ip += 4;
+		r1 = (int32) CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+		g1 = (int32) CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+		b1 = (int32) CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+		a1 = (int32) CLAMP(ip[3]); wp[3] = (a1-a2) & mask; a2 = a1;
+	    }
+	} else {
+	    ip += n - 1;	/* point to last one */
+	    wp += n - 1;	/* point to last one */
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride, wp[0] = (uint16) CLAMP(ip[0]);
+				wp[stride] -= wp[0];
+				wp[stride] &= mask;
+				wp--; ip--)
+		n -= stride;
+	    }
+	    REPEAT(stride, wp[0] = (uint16) CLAMP(ip[0]); wp--; ip--)
+	}
+    }
+}
+
+static void
+horizontalDifference16(unsigned short *ip, int n, int stride, 
+	unsigned short *wp, uint16 *From14)
+{
+    register int  r1, g1, b1, a1, r2, g2, b2, a2, mask;
+
+/* assumption is unsigned pixel values */
+#undef   CLAMP
+#define  CLAMP(v) From14[(v) >> 2]
+
+    mask = CODE_MASK;
+    if (n >= stride) {
+	if (stride == 3) {
+	    r2 = wp[0] = CLAMP(ip[0]);  g2 = wp[1] = CLAMP(ip[1]);
+	    b2 = wp[2] = CLAMP(ip[2]);
+	    n -= 3;
+	    while (n > 0) {
+		n -= 3;
+		wp += 3;
+		ip += 3;
+		r1 = CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+		g1 = CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+		b1 = CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+	    }
+	} else if (stride == 4) {
+	    r2 = wp[0] = CLAMP(ip[0]);  g2 = wp[1] = CLAMP(ip[1]);
+	    b2 = wp[2] = CLAMP(ip[2]);  a2 = wp[3] = CLAMP(ip[3]);
+	    n -= 4;
+	    while (n > 0) {
+		n -= 4;
+		wp += 4;
+		ip += 4;
+		r1 = CLAMP(ip[0]); wp[0] = (r1-r2) & mask; r2 = r1;
+		g1 = CLAMP(ip[1]); wp[1] = (g1-g2) & mask; g2 = g1;
+		b1 = CLAMP(ip[2]); wp[2] = (b1-b2) & mask; b2 = b1;
+		a1 = CLAMP(ip[3]); wp[3] = (a1-a2) & mask; a2 = a1;
+	    }
+	} else {
+	    ip += n - 1;	/* point to last one */
+	    wp += n - 1;	/* point to last one */
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride, wp[0] = CLAMP(ip[0]);
+				wp[stride] -= wp[0];
+				wp[stride] &= mask;
+				wp--; ip--)
+		n -= stride;
+	    }
+	    REPEAT(stride, wp[0] = CLAMP(ip[0]); wp--; ip--)
+	}
+    }
+}
+
+
+static void
+horizontalDifference8(unsigned char *ip, int n, int stride, 
+	unsigned short *wp, uint16 *From8)
+{
+    register int  r1, g1, b1, a1, r2, g2, b2, a2, mask;
+
+#undef	 CLAMP
+#define  CLAMP(v) (From8[(v)])
+
+    mask = CODE_MASK;
+    if (n >= stride) {
+	if (stride == 3) {
+	    r2 = wp[0] = CLAMP(ip[0]);  g2 = wp[1] = CLAMP(ip[1]);
+	    b2 = wp[2] = CLAMP(ip[2]);
+	    n -= 3;
+	    while (n > 0) {
+		n -= 3;
+		r1 = CLAMP(ip[3]); wp[3] = (r1-r2) & mask; r2 = r1;
+		g1 = CLAMP(ip[4]); wp[4] = (g1-g2) & mask; g2 = g1;
+		b1 = CLAMP(ip[5]); wp[5] = (b1-b2) & mask; b2 = b1;
+		wp += 3;
+		ip += 3;
+	    }
+	} else if (stride == 4) {
+	    r2 = wp[0] = CLAMP(ip[0]);  g2 = wp[1] = CLAMP(ip[1]);
+	    b2 = wp[2] = CLAMP(ip[2]);  a2 = wp[3] = CLAMP(ip[3]);
+	    n -= 4;
+	    while (n > 0) {
+		n -= 4;
+		r1 = CLAMP(ip[4]); wp[4] = (r1-r2) & mask; r2 = r1;
+		g1 = CLAMP(ip[5]); wp[5] = (g1-g2) & mask; g2 = g1;
+		b1 = CLAMP(ip[6]); wp[6] = (b1-b2) & mask; b2 = b1;
+		a1 = CLAMP(ip[7]); wp[7] = (a1-a2) & mask; a2 = a1;
+		wp += 4;
+		ip += 4;
+	    }
+	} else {
+	    wp += n + stride - 1;	/* point to last one */
+	    ip += n + stride - 1;	/* point to last one */
+	    n -= stride;
+	    while (n > 0) {
+		REPEAT(stride, wp[0] = CLAMP(ip[0]);
+				wp[stride] -= wp[0];
+				wp[stride] &= mask;
+				wp--; ip--)
+		n -= stride;
+	    }
+	    REPEAT(stride, wp[0] = CLAMP(ip[0]); wp--; ip--)
+	}
+    }
+}
+
+/*
+ * Encode a chunk of pixels.
+ */
+static int
+PixarLogEncode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	PixarLogState *sp = EncoderState(tif);
+	static const char module[] = "PixarLogEncode";
+	int 	i, n, llen;
+	unsigned short * up;
+
+	(void) s;
+
+	switch (sp->user_datafmt) {
+	case PIXARLOGDATAFMT_FLOAT:
+		n = cc / sizeof(float);		/* XXX float == 32 bits */
+		break;
+	case PIXARLOGDATAFMT_16BIT:
+	case PIXARLOGDATAFMT_12BITPICIO:
+	case PIXARLOGDATAFMT_11BITLOG:
+		n = cc / sizeof(uint16);	/* XXX uint16 == 16 bits */
+		break;
+	case PIXARLOGDATAFMT_8BIT:
+	case PIXARLOGDATAFMT_8BITABGR:
+		n = cc;
+		break;
+	default:
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			"%d bit input not supported in PixarLog",
+			td->td_bitspersample);
+		return 0;
+	}
+
+	llen = sp->stride * td->td_imagewidth;
+
+	for (i = 0, up = sp->tbuf; i < n; i += llen, up += llen) {
+		switch (sp->user_datafmt)  {
+		case PIXARLOGDATAFMT_FLOAT:
+			horizontalDifferenceF((float *)bp, llen, 
+				sp->stride, up, sp->FromLT2);
+			bp += llen * sizeof(float);
+			break;
+		case PIXARLOGDATAFMT_16BIT:
+			horizontalDifference16((uint16 *)bp, llen, 
+				sp->stride, up, sp->From14);
+			bp += llen * sizeof(uint16);
+			break;
+		case PIXARLOGDATAFMT_8BIT:
+			horizontalDifference8((unsigned char *)bp, llen, 
+				sp->stride, up, sp->From8);
+			bp += llen * sizeof(unsigned char);
+			break;
+		default:
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+				"%d bit input not supported in PixarLog",
+				td->td_bitspersample);
+			return 0;
+		}
+	}
+ 
+	sp->stream.next_in = (unsigned char *) sp->tbuf;
+	sp->stream.avail_in = n * sizeof(uint16);
+
+	do {
+		if (deflate(&sp->stream, Z_NO_FLUSH) != Z_OK) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: Encoder error: %s",
+			    tif->tif_name, sp->stream.msg);
+			return (0);
+		}
+		if (sp->stream.avail_out == 0) {
+			tif->tif_rawcc = tif->tif_rawdatasize;
+			TIFFFlushData1(tif);
+			sp->stream.next_out = tif->tif_rawdata;
+			sp->stream.avail_out = tif->tif_rawdatasize;
+		}
+	} while (sp->stream.avail_in > 0);
+	return (1);
+}
+
+/*
+ * Finish off an encoded strip by flushing the last
+ * string and tacking on an End Of Information code.
+ */
+
+static int
+PixarLogPostEncode(TIFF* tif)
+{
+	PixarLogState *sp = EncoderState(tif);
+	static const char module[] = "PixarLogPostEncode";
+	int state;
+
+	sp->stream.avail_in = 0;
+
+	do {
+		state = deflate(&sp->stream, Z_FINISH);
+		switch (state) {
+		case Z_STREAM_END:
+		case Z_OK:
+		    if (sp->stream.avail_out != (uint32)tif->tif_rawdatasize) {
+			    tif->tif_rawcc =
+				tif->tif_rawdatasize - sp->stream.avail_out;
+			    TIFFFlushData1(tif);
+			    sp->stream.next_out = tif->tif_rawdata;
+			    sp->stream.avail_out = tif->tif_rawdatasize;
+		    }
+		    break;
+		default:
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
+			tif->tif_name, sp->stream.msg);
+		    return (0);
+		}
+	} while (state != Z_STREAM_END);
+	return (1);
+}
+
+static void
+PixarLogClose(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	/* In a really sneaky maneuver, on close, we covertly modify both
+	 * bitspersample and sampleformat in the directory to indicate
+	 * 8-bit linear.  This way, the decode "just works" even for
+	 * readers that don't know about PixarLog, or how to set
+	 * the PIXARLOGDATFMT pseudo-tag.
+	 */
+	td->td_bitspersample = 8;
+	td->td_sampleformat = SAMPLEFORMAT_UINT;
+}
+
+static void
+PixarLogCleanup(TIFF* tif)
+{
+	PixarLogState* sp = (PixarLogState*) tif->tif_data;
+
+	assert(sp != 0);
+
+	(void)TIFFPredictorCleanup(tif);
+
+	tif->tif_tagmethods.vgetfield = sp->vgetparent;
+	tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+	if (sp->FromLT2) _TIFFfree(sp->FromLT2);
+	if (sp->From14) _TIFFfree(sp->From14);
+	if (sp->From8) _TIFFfree(sp->From8);
+	if (sp->ToLinearF) _TIFFfree(sp->ToLinearF);
+	if (sp->ToLinear16) _TIFFfree(sp->ToLinear16);
+	if (sp->ToLinear8) _TIFFfree(sp->ToLinear8);
+	if (sp->state&PLSTATE_INIT) {
+		if (tif->tif_mode == O_RDONLY)
+			inflateEnd(&sp->stream);
+		else
+			deflateEnd(&sp->stream);
+	}
+	if (sp->tbuf)
+		_TIFFfree(sp->tbuf);
+	_TIFFfree(sp);
+	tif->tif_data = NULL;
+
+	_TIFFSetDefaultCompressionState(tif);
+}
+
+static int
+PixarLogVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+    PixarLogState *sp = (PixarLogState *)tif->tif_data;
+    int result;
+    static const char module[] = "PixarLogVSetField";
+
+    switch (tag) {
+     case TIFFTAG_PIXARLOGQUALITY:
+		sp->quality = va_arg(ap, int);
+		if (tif->tif_mode != O_RDONLY && (sp->state&PLSTATE_INIT)) {
+			if (deflateParams(&sp->stream,
+			    sp->quality, Z_DEFAULT_STRATEGY) != Z_OK) {
+				TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
+					tif->tif_name, sp->stream.msg);
+				return (0);
+			}
+		}
+		return (1);
+     case TIFFTAG_PIXARLOGDATAFMT:
+	sp->user_datafmt = va_arg(ap, int);
+	/* Tweak the TIFF header so that the rest of libtiff knows what
+	 * size of data will be passed between app and library, and
+	 * assume that the app knows what it is doing and is not
+	 * confused by these header manipulations...
+	 */
+	switch (sp->user_datafmt) {
+	 case PIXARLOGDATAFMT_8BIT:
+	 case PIXARLOGDATAFMT_8BITABGR:
+	    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
+	    TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
+	    break;
+	 case PIXARLOGDATAFMT_11BITLOG:
+	    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 16);
+	    TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
+	    break;
+	 case PIXARLOGDATAFMT_12BITPICIO:
+	    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 16);
+	    TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT);
+	    break;
+	 case PIXARLOGDATAFMT_16BIT:
+	    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 16);
+	    TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
+	    break;
+	 case PIXARLOGDATAFMT_FLOAT:
+	    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 32);
+	    TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP);
+	    break;
+	}
+	/*
+	 * Must recalculate sizes should bits/sample change.
+	 */
+	tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
+	tif->tif_scanlinesize = TIFFScanlineSize(tif);
+	result = 1;		/* NB: pseudo tag */
+	break;
+     default:
+	result = (*sp->vsetparent)(tif, tag, ap);
+    }
+    return (result);
+}
+
+static int
+PixarLogVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+    PixarLogState *sp = (PixarLogState *)tif->tif_data;
+
+    switch (tag) {
+     case TIFFTAG_PIXARLOGQUALITY:
+	*va_arg(ap, int*) = sp->quality;
+	break;
+     case TIFFTAG_PIXARLOGDATAFMT:
+	*va_arg(ap, int*) = sp->user_datafmt;
+	break;
+     default:
+	return (*sp->vgetparent)(tif, tag, ap);
+    }
+    return (1);
+}
+
+static const TIFFFieldInfo pixarlogFieldInfo[] = {
+    {TIFFTAG_PIXARLOGDATAFMT,0,0,TIFF_ANY,  FIELD_PSEUDO,FALSE,FALSE,""},
+    {TIFFTAG_PIXARLOGQUALITY,0,0,TIFF_ANY,  FIELD_PSEUDO,FALSE,FALSE,""}
+};
+
+int
+TIFFInitPixarLog(TIFF* tif, int scheme)
+{
+	PixarLogState* sp;
+
+	assert(scheme == COMPRESSION_PIXARLOG);
+
+	/*
+	 * Allocate state block so tag methods have storage to record values.
+	 */
+	tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (PixarLogState));
+	if (tif->tif_data == NULL)
+		goto bad;
+	sp = (PixarLogState*) tif->tif_data;
+	_TIFFmemset(sp, 0, sizeof (*sp));
+	sp->stream.data_type = Z_BINARY;
+	sp->user_datafmt = PIXARLOGDATAFMT_UNKNOWN;
+
+	/*
+	 * Install codec methods.
+	 */
+	tif->tif_setupdecode = PixarLogSetupDecode;
+	tif->tif_predecode = PixarLogPreDecode;
+	tif->tif_decoderow = PixarLogDecode;
+	tif->tif_decodestrip = PixarLogDecode;
+	tif->tif_decodetile = PixarLogDecode;
+	tif->tif_setupencode = PixarLogSetupEncode;
+	tif->tif_preencode = PixarLogPreEncode;
+	tif->tif_postencode = PixarLogPostEncode;
+	tif->tif_encoderow = PixarLogEncode;
+	tif->tif_encodestrip = PixarLogEncode;
+	tif->tif_encodetile = PixarLogEncode;
+	tif->tif_close = PixarLogClose;
+	tif->tif_cleanup = PixarLogCleanup;
+
+	/* Override SetField so we can handle our private pseudo-tag */
+	_TIFFMergeFieldInfo(tif, pixarlogFieldInfo, N(pixarlogFieldInfo));
+	sp->vgetparent = tif->tif_tagmethods.vgetfield;
+	tif->tif_tagmethods.vgetfield = PixarLogVGetField;   /* hook for codec tags */
+	sp->vsetparent = tif->tif_tagmethods.vsetfield;
+	tif->tif_tagmethods.vsetfield = PixarLogVSetField;   /* hook for codec tags */
+
+	/* Default values for codec-specific fields */
+	sp->quality = Z_DEFAULT_COMPRESSION; /* default comp. level */
+	sp->state = 0;
+
+	/* we don't wish to use the predictor, 
+	 * the default is none, which predictor value 1
+	 */
+	(void) TIFFPredictorInit(tif);
+
+	/*
+	 * build the companding tables 
+	 */
+	PixarLogMakeTables(sp);
+
+	return (1);
+bad:
+	TIFFErrorExt(tif->tif_clientdata, "TIFFInitPixarLog",
+		     "No space for PixarLog state block");
+	return (0);
+}
+#endif /* PIXARLOG_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_predict.c b/src/libtiff/tif_predict.c
new file mode 100644
index 0000000..e738ca3
--- /dev/null
+++ b/src/libtiff/tif_predict.c
@@ -0,0 +1,626 @@
+/* $Id: tif_predict.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Predictor Tag Support (used by multiple codecs).
+ */
+#include "tiffiop.h"
+#include "tif_predict.h"
+
+#define	PredictorState(tif)	((TIFFPredictorState*) (tif)->tif_data)
+
+static	void horAcc8(TIFF*, tidata_t, tsize_t);
+static	void horAcc16(TIFF*, tidata_t, tsize_t);
+static	void swabHorAcc16(TIFF*, tidata_t, tsize_t);
+static	void horDiff8(TIFF*, tidata_t, tsize_t);
+static	void horDiff16(TIFF*, tidata_t, tsize_t);
+static	void fpAcc(TIFF*, tidata_t, tsize_t);
+static	void fpDiff(TIFF*, tidata_t, tsize_t);
+static	int PredictorDecodeRow(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int PredictorDecodeTile(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int PredictorEncodeRow(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int PredictorEncodeTile(TIFF*, tidata_t, tsize_t, tsample_t);
+
+static int
+PredictorSetup(TIFF* tif)
+{
+	static const char module[] = "PredictorSetup";
+
+	TIFFPredictorState* sp = PredictorState(tif);
+	TIFFDirectory* td = &tif->tif_dir;
+
+	switch (sp->predictor)		/* no differencing */
+	{
+		case PREDICTOR_NONE:
+			return 1;
+		case PREDICTOR_HORIZONTAL:
+			if (td->td_bitspersample != 8
+			    && td->td_bitspersample != 16) {
+				TIFFErrorExt(tif->tif_clientdata, module,
+    "Horizontal differencing \"Predictor\" not supported with %d-bit samples",
+					  td->td_bitspersample);
+				return 0;
+			}
+			break;
+		case PREDICTOR_FLOATINGPOINT:
+			if (td->td_sampleformat != SAMPLEFORMAT_IEEEFP) {
+				TIFFErrorExt(tif->tif_clientdata, module,
+	"Floating point \"Predictor\" not supported with %d data format",
+					  td->td_sampleformat);
+				return 0;
+			}
+			break;
+		default:
+			TIFFErrorExt(tif->tif_clientdata, module,
+				  "\"Predictor\" value %d not supported",
+				  sp->predictor);
+			return 0;
+	}
+	sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
+	    td->td_samplesperpixel : 1);
+	/*
+	 * Calculate the scanline/tile-width size in bytes.
+	 */
+	if (isTiled(tif))
+		sp->rowsize = TIFFTileRowSize(tif);
+	else
+		sp->rowsize = TIFFScanlineSize(tif);
+
+	return 1;
+}
+
+static int
+PredictorSetupDecode(TIFF* tif)
+{
+	TIFFPredictorState* sp = PredictorState(tif);
+	TIFFDirectory* td = &tif->tif_dir;
+
+	if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif))
+		return 0;
+
+	if (sp->predictor == 2) {
+		switch (td->td_bitspersample) {
+			case 8:  sp->pfunc = horAcc8; break;
+			case 16: sp->pfunc = horAcc16; break;
+		}
+		/*
+		 * Override default decoding method with one that does the
+		 * predictor stuff.
+		 */
+		sp->coderow = tif->tif_decoderow;
+		tif->tif_decoderow = PredictorDecodeRow;
+		sp->codestrip = tif->tif_decodestrip;
+		tif->tif_decodestrip = PredictorDecodeTile;
+		sp->codetile = tif->tif_decodetile;
+		tif->tif_decodetile = PredictorDecodeTile;
+		/*
+		 * If the data is horizontally differenced 16-bit data that
+		 * requires byte-swapping, then it must be byte swapped before
+		 * the accumulation step.  We do this with a special-purpose
+		 * routine and override the normal post decoding logic that
+		 * the library setup when the directory was read.
+		 */
+		if (tif->tif_flags & TIFF_SWAB) {
+			if (sp->pfunc == horAcc16) {
+				sp->pfunc = swabHorAcc16;
+				tif->tif_postdecode = _TIFFNoPostDecode;
+			} /* else handle 32-bit case... */
+		}
+	}
+
+	else if (sp->predictor == 3) {
+		sp->pfunc = fpAcc;
+		/*
+		 * Override default decoding method with one that does the
+		 * predictor stuff.
+		 */
+		sp->coderow = tif->tif_decoderow;
+		tif->tif_decoderow = PredictorDecodeRow;
+		sp->codestrip = tif->tif_decodestrip;
+		tif->tif_decodestrip = PredictorDecodeTile;
+		sp->codetile = tif->tif_decodetile;
+		tif->tif_decodetile = PredictorDecodeTile;
+		/*
+		 * The data should not be swapped outside of the floating
+		 * point predictor, the accumulation routine should return
+		 * byres in the native order.
+		 */
+		if (tif->tif_flags & TIFF_SWAB) {
+			tif->tif_postdecode = _TIFFNoPostDecode;
+		}
+		/*
+		 * Allocate buffer to keep the decoded bytes before
+		 * rearranging in the ight order
+		 */
+	}
+
+	return 1;
+}
+
+static int
+PredictorSetupEncode(TIFF* tif)
+{
+	TIFFPredictorState* sp = PredictorState(tif);
+	TIFFDirectory* td = &tif->tif_dir;
+
+	if (!(*sp->setupencode)(tif) || !PredictorSetup(tif))
+		return 0;
+
+	if (sp->predictor == 2) {
+		switch (td->td_bitspersample) {
+			case 8:  sp->pfunc = horDiff8; break;
+			case 16: sp->pfunc = horDiff16; break;
+		}
+		/*
+		 * Override default encoding method with one that does the
+		 * predictor stuff.
+		 */
+		sp->coderow = tif->tif_encoderow;
+		tif->tif_encoderow = PredictorEncodeRow;
+		sp->codestrip = tif->tif_encodestrip;
+		tif->tif_encodestrip = PredictorEncodeTile;
+		sp->codetile = tif->tif_encodetile;
+		tif->tif_encodetile = PredictorEncodeTile;
+	}
+	
+	else if (sp->predictor == 3) {
+		sp->pfunc = fpDiff;
+		/*
+		 * Override default encoding method with one that does the
+		 * predictor stuff.
+		 */
+		sp->coderow = tif->tif_encoderow;
+		tif->tif_encoderow = PredictorEncodeRow;
+		sp->codestrip = tif->tif_encodestrip;
+		tif->tif_encodestrip = PredictorEncodeTile;
+		sp->codetile = tif->tif_encodetile;
+		tif->tif_encodetile = PredictorEncodeTile;
+	}
+
+	return 1;
+}
+
+#define REPEAT4(n, op)		\
+    switch (n) {		\
+    default: { int i; for (i = n-4; i > 0; i--) { op; } } \
+    case 4:  op;		\
+    case 3:  op;		\
+    case 2:  op;		\
+    case 1:  op;		\
+    case 0:  ;			\
+    }
+
+static void
+horAcc8(TIFF* tif, tidata_t cp0, tsize_t cc)
+{
+	tsize_t stride = PredictorState(tif)->stride;
+
+	char* cp = (char*) cp0;
+	if (cc > stride) {
+		cc -= stride;
+		/*
+		 * Pipeline the most common cases.
+		 */
+		if (stride == 3)  {
+			unsigned int cr = cp[0];
+			unsigned int cg = cp[1];
+			unsigned int cb = cp[2];
+			do {
+				cc -= 3, cp += 3;
+				cp[0] = (char) (cr += cp[0]);
+				cp[1] = (char) (cg += cp[1]);
+				cp[2] = (char) (cb += cp[2]);
+			} while ((int32) cc > 0);
+		} else if (stride == 4)  {
+			unsigned int cr = cp[0];
+			unsigned int cg = cp[1];
+			unsigned int cb = cp[2];
+			unsigned int ca = cp[3];
+			do {
+				cc -= 4, cp += 4;
+				cp[0] = (char) (cr += cp[0]);
+				cp[1] = (char) (cg += cp[1]);
+				cp[2] = (char) (cb += cp[2]);
+				cp[3] = (char) (ca += cp[3]);
+			} while ((int32) cc > 0);
+		} else  {
+			do {
+				REPEAT4(stride, cp[stride] =
+					(char) (cp[stride] + *cp); cp++)
+				cc -= stride;
+			} while ((int32) cc > 0);
+		}
+	}
+}
+
+static void
+swabHorAcc16(TIFF* tif, tidata_t cp0, tsize_t cc)
+{
+	tsize_t stride = PredictorState(tif)->stride;
+	uint16* wp = (uint16*) cp0;
+	tsize_t wc = cc / 2;
+
+	if (wc > stride) {
+		TIFFSwabArrayOfShort(wp, wc);
+		wc -= stride;
+		do {
+			REPEAT4(stride, wp[stride] += wp[0]; wp++)
+			wc -= stride;
+		} while ((int32) wc > 0);
+	}
+}
+
+static void
+horAcc16(TIFF* tif, tidata_t cp0, tsize_t cc)
+{
+	tsize_t stride = PredictorState(tif)->stride;
+	uint16* wp = (uint16*) cp0;
+	tsize_t wc = cc / 2;
+
+	if (wc > stride) {
+		wc -= stride;
+		do {
+			REPEAT4(stride, wp[stride] += wp[0]; wp++)
+			wc -= stride;
+		} while ((int32) wc > 0);
+	}
+}
+
+/*
+ * Floating point predictor accumulation routine.
+ */
+static void
+fpAcc(TIFF* tif, tidata_t cp0, tsize_t cc)
+{
+	tsize_t stride = PredictorState(tif)->stride;
+	uint32 bps = tif->tif_dir.td_bitspersample / 8;
+	tsize_t wc = cc / bps;
+	tsize_t count = cc;
+	uint8 *cp = (uint8 *) cp0;
+	uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
+
+	if (!tmp)
+		return;
+
+	while (count > stride) {
+		REPEAT4(stride, cp[stride] += cp[0]; cp++)
+		count -= stride;
+	}
+
+	_TIFFmemcpy(tmp, cp0, cc);
+	cp = (uint8 *) cp0;
+	for (count = 0; count < wc; count++) {
+		uint32 byte;
+		for (byte = 0; byte < bps; byte++) {
+#if WORDS_BIGENDIAN
+			cp[bps * count + byte] = tmp[byte * wc + count];
+#else
+			cp[bps * count + byte] =
+				tmp[(bps - byte - 1) * wc + count];
+#endif
+		}
+	}
+	_TIFFfree(tmp);
+}
+
+/*
+ * Decode a scanline and apply the predictor routine.
+ */
+static int
+PredictorDecodeRow(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
+{
+	TIFFPredictorState *sp = PredictorState(tif);
+
+	assert(sp != NULL);
+	assert(sp->coderow != NULL);
+	assert(sp->pfunc != NULL);
+
+	if ((*sp->coderow)(tif, op0, occ0, s)) {
+		(*sp->pfunc)(tif, op0, occ0);
+		return 1;
+	} else
+		return 0;
+}
+
+/*
+ * Decode a tile/strip and apply the predictor routine.
+ * Note that horizontal differencing must be done on a
+ * row-by-row basis.  The width of a "row" has already
+ * been calculated at pre-decode time according to the
+ * strip/tile dimensions.
+ */
+static int
+PredictorDecodeTile(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
+{
+	TIFFPredictorState *sp = PredictorState(tif);
+
+	assert(sp != NULL);
+	assert(sp->codetile != NULL);
+
+	if ((*sp->codetile)(tif, op0, occ0, s)) {
+		tsize_t rowsize = sp->rowsize;
+		assert(rowsize > 0);
+		assert(sp->pfunc != NULL);
+		while ((long)occ0 > 0) {
+			(*sp->pfunc)(tif, op0, (tsize_t) rowsize);
+			occ0 -= rowsize;
+			op0 += rowsize;
+		}
+		return 1;
+	} else
+		return 0;
+}
+
+static void
+horDiff8(TIFF* tif, tidata_t cp0, tsize_t cc)
+{
+	TIFFPredictorState* sp = PredictorState(tif);
+	tsize_t stride = sp->stride;
+	char* cp = (char*) cp0;
+
+	if (cc > stride) {
+		cc -= stride;
+		/*
+		 * Pipeline the most common cases.
+		 */
+		if (stride == 3) {
+			int r1, g1, b1;
+			int r2 = cp[0];
+			int g2 = cp[1];
+			int b2 = cp[2];
+			do {
+				r1 = cp[3]; cp[3] = r1-r2; r2 = r1;
+				g1 = cp[4]; cp[4] = g1-g2; g2 = g1;
+				b1 = cp[5]; cp[5] = b1-b2; b2 = b1;
+				cp += 3;
+			} while ((int32)(cc -= 3) > 0);
+		} else if (stride == 4) {
+			int r1, g1, b1, a1;
+			int r2 = cp[0];
+			int g2 = cp[1];
+			int b2 = cp[2];
+			int a2 = cp[3];
+			do {
+				r1 = cp[4]; cp[4] = r1-r2; r2 = r1;
+				g1 = cp[5]; cp[5] = g1-g2; g2 = g1;
+				b1 = cp[6]; cp[6] = b1-b2; b2 = b1;
+				a1 = cp[7]; cp[7] = a1-a2; a2 = a1;
+				cp += 4;
+			} while ((int32)(cc -= 4) > 0);
+		} else {
+			cp += cc - 1;
+			do {
+				REPEAT4(stride, cp[stride] -= cp[0]; cp--)
+			} while ((int32)(cc -= stride) > 0);
+		}
+	}
+}
+
+static void
+horDiff16(TIFF* tif, tidata_t cp0, tsize_t cc)
+{
+	TIFFPredictorState* sp = PredictorState(tif);
+	tsize_t stride = sp->stride;
+	int16 *wp = (int16*) cp0;
+	tsize_t wc = cc/2;
+
+	if (wc > stride) {
+		wc -= stride;
+		wp += wc - 1;
+		do {
+			REPEAT4(stride, wp[stride] -= wp[0]; wp--)
+			wc -= stride;
+		} while ((int32) wc > 0);
+	}
+}
+
+/*
+ * Floating point predictor differencing routine.
+ */
+static void
+fpDiff(TIFF* tif, tidata_t cp0, tsize_t cc)
+{
+	tsize_t stride = PredictorState(tif)->stride;
+	uint32 bps = tif->tif_dir.td_bitspersample / 8;
+	tsize_t wc = cc / bps;
+	tsize_t count;
+	uint8 *cp = (uint8 *) cp0;
+	uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
+
+	if (!tmp)
+		return;
+
+	_TIFFmemcpy(tmp, cp0, cc);
+	for (count = 0; count < wc; count++) {
+		uint32 byte;
+		for (byte = 0; byte < bps; byte++) {
+#if WORDS_BIGENDIAN
+			cp[byte * wc + count] =	tmp[bps * count + byte];
+#else
+			cp[(bps - byte - 1) * wc + count] =
+				tmp[bps * count + byte];
+#endif
+		}
+	}
+	_TIFFfree(tmp);
+
+	cp = (uint8 *) cp0;
+	cp += cc - stride - 1;
+	for (count = cc; count > stride; count -= stride)
+		REPEAT4(stride, cp[stride] -= cp[0]; cp--)
+}
+
+static int
+PredictorEncodeRow(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	TIFFPredictorState *sp = PredictorState(tif);
+
+	assert(sp != NULL);
+	assert(sp->pfunc != NULL);
+	assert(sp->coderow != NULL);
+
+	/* XXX horizontal differencing alters user's data XXX */
+	(*sp->pfunc)(tif, bp, cc);
+	return (*sp->coderow)(tif, bp, cc, s);
+}
+
+static int
+PredictorEncodeTile(TIFF* tif, tidata_t bp0, tsize_t cc0, tsample_t s)
+{
+	TIFFPredictorState *sp = PredictorState(tif);
+	tsize_t cc = cc0, rowsize;
+	unsigned char* bp = bp0;
+
+	assert(sp != NULL);
+	assert(sp->pfunc != NULL);
+	assert(sp->codetile != NULL);
+
+	rowsize = sp->rowsize;
+	assert(rowsize > 0);
+	while ((long)cc > 0) {
+		(*sp->pfunc)(tif, bp, (tsize_t) rowsize);
+		cc -= rowsize;
+		bp += rowsize;
+	}
+	return (*sp->codetile)(tif, bp0, cc0, s);
+}
+
+#define	FIELD_PREDICTOR	(FIELD_CODEC+0)		/* XXX */
+
+static const TIFFFieldInfo predictFieldInfo[] = {
+    { TIFFTAG_PREDICTOR,	 1, 1, TIFF_SHORT,	FIELD_PREDICTOR,
+      FALSE,	FALSE,	"Predictor" },
+};
+#define	N(a)	(sizeof (a) / sizeof (a[0]))
+
+static int
+PredictorVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	TIFFPredictorState *sp = PredictorState(tif);
+
+	assert(sp != NULL);
+	assert(sp->vsetparent != NULL);
+
+	switch (tag) {
+	case TIFFTAG_PREDICTOR:
+		sp->predictor = (uint16) va_arg(ap, int);
+		TIFFSetFieldBit(tif, FIELD_PREDICTOR);
+		break;
+	default:
+		return (*sp->vsetparent)(tif, tag, ap);
+	}
+	tif->tif_flags |= TIFF_DIRTYDIRECT;
+	return 1;
+}
+
+static int
+PredictorVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	TIFFPredictorState *sp = PredictorState(tif);
+
+	assert(sp != NULL);
+	assert(sp->vgetparent != NULL);
+
+	switch (tag) {
+	case TIFFTAG_PREDICTOR:
+		*va_arg(ap, uint16*) = sp->predictor;
+		break;
+	default:
+		return (*sp->vgetparent)(tif, tag, ap);
+	}
+	return 1;
+}
+
+static void
+PredictorPrintDir(TIFF* tif, FILE* fd, long flags)
+{
+	TIFFPredictorState* sp = PredictorState(tif);
+
+	(void) flags;
+	if (TIFFFieldSet(tif,FIELD_PREDICTOR)) {
+		fprintf(fd, "  Predictor: ");
+		switch (sp->predictor) {
+		case 1: fprintf(fd, "none "); break;
+		case 2: fprintf(fd, "horizontal differencing "); break;
+		case 3: fprintf(fd, "floating point predictor "); break;
+		}
+		fprintf(fd, "%u (0x%x)\n", sp->predictor, sp->predictor);
+	}
+	if (sp->printdir)
+		(*sp->printdir)(tif, fd, flags);
+}
+
+int
+TIFFPredictorInit(TIFF* tif)
+{
+	TIFFPredictorState* sp = PredictorState(tif);
+
+	assert(sp != 0);
+
+	/*
+	 * Merge codec-specific tag information and
+	 * override parent get/set field methods.
+	 */
+	_TIFFMergeFieldInfo(tif, predictFieldInfo, N(predictFieldInfo));
+	sp->vgetparent = tif->tif_tagmethods.vgetfield;
+	tif->tif_tagmethods.vgetfield =
+            PredictorVGetField;/* hook for predictor tag */
+	sp->vsetparent = tif->tif_tagmethods.vsetfield;
+	tif->tif_tagmethods.vsetfield =
+            PredictorVSetField;/* hook for predictor tag */
+	sp->printdir = tif->tif_tagmethods.printdir;
+	tif->tif_tagmethods.printdir =
+            PredictorPrintDir;	/* hook for predictor tag */
+
+	sp->setupdecode = tif->tif_setupdecode;
+	tif->tif_setupdecode = PredictorSetupDecode;
+	sp->setupencode = tif->tif_setupencode;
+	tif->tif_setupencode = PredictorSetupEncode;
+
+	sp->predictor = 1;			/* default value */
+	sp->pfunc = NULL;			/* no predictor routine */
+	return 1;
+}
+
+int
+TIFFPredictorCleanup(TIFF* tif)
+{
+	TIFFPredictorState* sp = PredictorState(tif);
+
+	assert(sp != 0);
+
+	tif->tif_tagmethods.vgetfield = sp->vgetparent;
+	tif->tif_tagmethods.vsetfield = sp->vsetparent;
+	tif->tif_tagmethods.printdir = sp->printdir;
+	tif->tif_setupdecode = sp->setupdecode;
+	tif->tif_setupencode = sp->setupencode;
+
+	return 1;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_predict.h b/src/libtiff/tif_predict.h
new file mode 100644
index 0000000..594f973
--- /dev/null
+++ b/src/libtiff/tif_predict.h
@@ -0,0 +1,64 @@
+/* $Id: tif_predict.h,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1995-1997 Sam Leffler
+ * Copyright (c) 1995-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFPREDICT_
+#define	_TIFFPREDICT_
+/*
+ * ``Library-private'' Support for the Predictor Tag
+ */
+
+/*
+ * Codecs that want to support the Predictor tag must place
+ * this structure first in their private state block so that
+ * the predictor code can cast tif_data to find its state.
+ */
+typedef struct {
+	int		predictor;	/* predictor tag value */
+	int		stride;		/* sample stride over data */
+	tsize_t		rowsize;	/* tile/strip row size */
+
+	TIFFPostMethod	pfunc;		/* horizontal differencer/accumulator */
+	TIFFCodeMethod	coderow;	/* parent codec encode/decode row */
+	TIFFCodeMethod	codestrip;	/* parent codec encode/decode strip */
+	TIFFCodeMethod	codetile;	/* parent codec encode/decode tile */
+	TIFFVGetMethod	vgetparent;	/* super-class method */
+	TIFFVSetMethod	vsetparent;	/* super-class method */
+	TIFFPrintMethod	printdir;	/* super-class method */
+	TIFFBoolMethod	setupdecode;	/* super-class method */
+	TIFFBoolMethod	setupencode;	/* super-class method */
+} TIFFPredictorState;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern	int TIFFPredictorInit(TIFF*);
+extern	int TIFFPredictorCleanup(TIFF*);
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFPREDICT_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_print.c b/src/libtiff/tif_print.c
new file mode 100644
index 0000000..01429be
--- /dev/null
+++ b/src/libtiff/tif_print.c
@@ -0,0 +1,639 @@
+/* $Id: tif_print.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Directory Printing Support
+ */
+#include "tiffiop.h"
+#include <stdio.h>
+
+#include <ctype.h>
+
+static const char *photoNames[] = {
+    "min-is-white",				/* PHOTOMETRIC_MINISWHITE */
+    "min-is-black",				/* PHOTOMETRIC_MINISBLACK */
+    "RGB color",				/* PHOTOMETRIC_RGB */
+    "palette color (RGB from colormap)",	/* PHOTOMETRIC_PALETTE */
+    "transparency mask",			/* PHOTOMETRIC_MASK */
+    "separated",				/* PHOTOMETRIC_SEPARATED */
+    "YCbCr",					/* PHOTOMETRIC_YCBCR */
+    "7 (0x7)",
+    "CIE L*a*b*",				/* PHOTOMETRIC_CIELAB */
+};
+#define	NPHOTONAMES	(sizeof (photoNames) / sizeof (photoNames[0]))
+
+static const char *orientNames[] = {
+    "0 (0x0)",
+    "row 0 top, col 0 lhs",			/* ORIENTATION_TOPLEFT */
+    "row 0 top, col 0 rhs",			/* ORIENTATION_TOPRIGHT */
+    "row 0 bottom, col 0 rhs",			/* ORIENTATION_BOTRIGHT */
+    "row 0 bottom, col 0 lhs",			/* ORIENTATION_BOTLEFT */
+    "row 0 lhs, col 0 top",			/* ORIENTATION_LEFTTOP */
+    "row 0 rhs, col 0 top",			/* ORIENTATION_RIGHTTOP */
+    "row 0 rhs, col 0 bottom",			/* ORIENTATION_RIGHTBOT */
+    "row 0 lhs, col 0 bottom",			/* ORIENTATION_LEFTBOT */
+};
+#define	NORIENTNAMES	(sizeof (orientNames) / sizeof (orientNames[0]))
+
+static void
+_TIFFPrintField(FILE* fd, const TIFFFieldInfo *fip,
+		uint32 value_count, void *raw_data)
+{
+	uint32 j;
+		
+	fprintf(fd, "  %s: ", fip->field_name);
+
+	for(j = 0; j < value_count; j++) {
+		if(fip->field_type == TIFF_BYTE)
+			fprintf(fd, "%u", ((uint8 *) raw_data)[j]);
+		else if(fip->field_type == TIFF_UNDEFINED)
+			fprintf(fd, "0x%x",
+				(unsigned int) ((unsigned char *) raw_data)[j]);
+		else if(fip->field_type == TIFF_SBYTE)
+			fprintf(fd, "%d", ((int8 *) raw_data)[j]);
+		else if(fip->field_type == TIFF_SHORT)
+			fprintf(fd, "%u", ((uint16 *) raw_data)[j]);
+		else if(fip->field_type == TIFF_SSHORT)
+			fprintf(fd, "%d", ((int16 *) raw_data)[j]);
+		else if(fip->field_type == TIFF_LONG)
+			fprintf(fd, "%lu",
+				(unsigned long)((uint32 *) raw_data)[j]);
+		else if(fip->field_type == TIFF_SLONG)
+			fprintf(fd, "%ld", (long)((int32 *) raw_data)[j]);
+		else if(fip->field_type == TIFF_RATIONAL
+			|| fip->field_type == TIFF_SRATIONAL
+			|| fip->field_type == TIFF_FLOAT)
+			fprintf(fd, "%f", ((float *) raw_data)[j]);
+		else if(fip->field_type == TIFF_IFD)
+			fprintf(fd, "0x%ulx", ((uint32 *) raw_data)[j]);
+		else if(fip->field_type == TIFF_ASCII) {
+			fprintf(fd, "%s", (char *) raw_data);
+			break;
+		}
+		else if(fip->field_type == TIFF_DOUBLE)
+			fprintf(fd, "%f", ((double *) raw_data)[j]);
+		else if(fip->field_type == TIFF_FLOAT)
+			fprintf(fd, "%f", ((float *)raw_data)[j]);
+		else {
+			fprintf(fd, "<unsupported data type in TIFFPrint>");
+			break;
+		}
+
+		if(j < value_count - 1)
+			fprintf(fd, ",");
+	}
+
+	fprintf(fd, "\n");
+}
+
+static int
+_TIFFPrettyPrintField(TIFF* tif, FILE* fd, ttag_t tag,
+		      uint32 value_count, void *raw_data)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	switch (tag)
+	{
+		case TIFFTAG_INKSET:
+			fprintf(fd, "  Ink Set: ");
+			switch (*((uint16*)raw_data)) {
+				case INKSET_CMYK:
+					fprintf(fd, "CMYK\n");
+					break;
+				default:
+					fprintf(fd, "%u (0x%x)\n",
+						*((uint16*)raw_data),
+						*((uint16*)raw_data));
+					break;
+			}
+			return 1;
+		case TIFFTAG_DOTRANGE:
+			fprintf(fd, "  Dot Range: %u-%u\n",
+				((uint16*)raw_data)[0], ((uint16*)raw_data)[1]);
+			return 1;
+		case TIFFTAG_WHITEPOINT:
+			fprintf(fd, "  White Point: %g-%g\n",
+				((float *)raw_data)[0], ((float *)raw_data)[1]);			return 1;
+		case TIFFTAG_REFERENCEBLACKWHITE:
+		{
+			uint16 i;
+
+			fprintf(fd, "  Reference Black/White:\n");
+			for (i = 0; i < td->td_samplesperpixel; i++)
+			fprintf(fd, "    %2d: %5g %5g\n", i,
+				((float *)raw_data)[2*i+0],
+				((float *)raw_data)[2*i+1]);
+			return 1;
+		}
+		case TIFFTAG_XMLPACKET:
+		{
+			uint32 i;
+			
+			fprintf(fd, "  XMLPacket (XMP Metadata):\n" );
+			for(i = 0; i < value_count; i++)
+				fputc(((char *)raw_data)[i], fd);
+			fprintf( fd, "\n" );
+			return 1;
+		}
+		case TIFFTAG_RICHTIFFIPTC:
+			/*
+			 * XXX: for some weird reason RichTIFFIPTC tag
+			 * defined as array of LONG values.
+			 */
+			fprintf(fd,
+				"  RichTIFFIPTC Data: <present>, %lu bytes\n",
+				(unsigned long) value_count * 4);
+			return 1;
+		case TIFFTAG_PHOTOSHOP:
+			fprintf(fd, "  Photoshop Data: <present>, %lu bytes\n",
+				(unsigned long) value_count);
+			return 1;
+		case TIFFTAG_ICCPROFILE:
+			fprintf(fd, "  ICC Profile: <present>, %lu bytes\n",
+				(unsigned long) value_count);
+			return 1;
+		case TIFFTAG_STONITS:
+			fprintf(fd,
+				"  Sample to Nits conversion factor: %.4e\n",
+				*((double*)raw_data));
+			return 1;
+        }
+
+	return 0;
+}
+
+/*
+ * Print the contents of the current directory
+ * to the specified stdio file stream.
+ */
+void
+TIFFPrintDirectory(TIFF* tif, FILE* fd, long flags)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	char *sep;
+	uint16 i;
+	long l, n;
+
+	fprintf(fd, "TIFF Directory at offset 0x%lx (%lu)\n",
+		(unsigned long)tif->tif_diroff, (unsigned long)tif->tif_diroff);
+	if (TIFFFieldSet(tif,FIELD_SUBFILETYPE)) {
+		fprintf(fd, "  Subfile Type:");
+		sep = " ";
+		if (td->td_subfiletype & FILETYPE_REDUCEDIMAGE) {
+			fprintf(fd, "%sreduced-resolution image", sep);
+			sep = "/";
+		}
+		if (td->td_subfiletype & FILETYPE_PAGE) {
+			fprintf(fd, "%smulti-page document", sep);
+			sep = "/";
+		}
+		if (td->td_subfiletype & FILETYPE_MASK)
+			fprintf(fd, "%stransparency mask", sep);
+		fprintf(fd, " (%lu = 0x%lx)\n",
+		    (long) td->td_subfiletype, (long) td->td_subfiletype);
+	}
+	if (TIFFFieldSet(tif,FIELD_IMAGEDIMENSIONS)) {
+		fprintf(fd, "  Image Width: %lu Image Length: %lu",
+		    (unsigned long) td->td_imagewidth, (unsigned long) td->td_imagelength);
+		if (TIFFFieldSet(tif,FIELD_IMAGEDEPTH))
+			fprintf(fd, " Image Depth: %lu",
+			    (unsigned long) td->td_imagedepth);
+		fprintf(fd, "\n");
+	}
+	if (TIFFFieldSet(tif,FIELD_TILEDIMENSIONS)) {
+		fprintf(fd, "  Tile Width: %lu Tile Length: %lu",
+		    (unsigned long) td->td_tilewidth, (unsigned long) td->td_tilelength);
+		if (TIFFFieldSet(tif,FIELD_TILEDEPTH))
+			fprintf(fd, " Tile Depth: %lu",
+			    (unsigned long) td->td_tiledepth);
+		fprintf(fd, "\n");
+	}
+	if (TIFFFieldSet(tif,FIELD_RESOLUTION)) {
+		fprintf(fd, "  Resolution: %g, %g",
+		    td->td_xresolution, td->td_yresolution);
+		if (TIFFFieldSet(tif,FIELD_RESOLUTIONUNIT)) {
+			switch (td->td_resolutionunit) {
+			case RESUNIT_NONE:
+				fprintf(fd, " (unitless)");
+				break;
+			case RESUNIT_INCH:
+				fprintf(fd, " pixels/inch");
+				break;
+			case RESUNIT_CENTIMETER:
+				fprintf(fd, " pixels/cm");
+				break;
+			default:
+				fprintf(fd, " (unit %u = 0x%x)",
+				    td->td_resolutionunit,
+				    td->td_resolutionunit);
+				break;
+			}
+		}
+		fprintf(fd, "\n");
+	}
+	if (TIFFFieldSet(tif,FIELD_POSITION))
+		fprintf(fd, "  Position: %g, %g\n",
+		    td->td_xposition, td->td_yposition);
+	if (TIFFFieldSet(tif,FIELD_BITSPERSAMPLE))
+		fprintf(fd, "  Bits/Sample: %u\n", td->td_bitspersample);
+	if (TIFFFieldSet(tif,FIELD_SAMPLEFORMAT)) {
+		fprintf(fd, "  Sample Format: ");
+		switch (td->td_sampleformat) {
+		case SAMPLEFORMAT_VOID:
+			fprintf(fd, "void\n");
+			break;
+		case SAMPLEFORMAT_INT:
+			fprintf(fd, "signed integer\n");
+			break;
+		case SAMPLEFORMAT_UINT:
+			fprintf(fd, "unsigned integer\n");
+			break;
+		case SAMPLEFORMAT_IEEEFP:
+			fprintf(fd, "IEEE floating point\n");
+			break;
+		case SAMPLEFORMAT_COMPLEXINT:
+			fprintf(fd, "complex signed integer\n");
+			break;
+		case SAMPLEFORMAT_COMPLEXIEEEFP:
+			fprintf(fd, "complex IEEE floating point\n");
+			break;
+		default:
+			fprintf(fd, "%u (0x%x)\n",
+			    td->td_sampleformat, td->td_sampleformat);
+			break;
+		}
+	}
+	if (TIFFFieldSet(tif,FIELD_COMPRESSION)) {
+		const TIFFCodec* c = TIFFFindCODEC(td->td_compression);
+		fprintf(fd, "  Compression Scheme: ");
+		if (c)
+			fprintf(fd, "%s\n", c->name);
+		else
+			fprintf(fd, "%u (0x%x)\n",
+			    td->td_compression, td->td_compression);
+	}
+	if (TIFFFieldSet(tif,FIELD_PHOTOMETRIC)) {
+		fprintf(fd, "  Photometric Interpretation: ");
+		if (td->td_photometric < NPHOTONAMES)
+			fprintf(fd, "%s\n", photoNames[td->td_photometric]);
+		else {
+			switch (td->td_photometric) {
+			case PHOTOMETRIC_LOGL:
+				fprintf(fd, "CIE Log2(L)\n");
+				break;
+			case PHOTOMETRIC_LOGLUV:
+				fprintf(fd, "CIE Log2(L) (u',v')\n");
+				break;
+			default:
+				fprintf(fd, "%u (0x%x)\n",
+				    td->td_photometric, td->td_photometric);
+				break;
+			}
+		}
+	}
+	if (TIFFFieldSet(tif,FIELD_EXTRASAMPLES) && td->td_extrasamples) {
+		fprintf(fd, "  Extra Samples: %u<", td->td_extrasamples);
+		sep = "";
+		for (i = 0; i < td->td_extrasamples; i++) {
+			switch (td->td_sampleinfo[i]) {
+			case EXTRASAMPLE_UNSPECIFIED:
+				fprintf(fd, "%sunspecified", sep);
+				break;
+			case EXTRASAMPLE_ASSOCALPHA:
+				fprintf(fd, "%sassoc-alpha", sep);
+				break;
+			case EXTRASAMPLE_UNASSALPHA:
+				fprintf(fd, "%sunassoc-alpha", sep);
+				break;
+			default:
+				fprintf(fd, "%s%u (0x%x)", sep,
+				    td->td_sampleinfo[i], td->td_sampleinfo[i]);
+				break;
+			}
+			sep = ", ";
+		}
+		fprintf(fd, ">\n");
+	}
+	if (TIFFFieldSet(tif,FIELD_INKNAMES)) {
+		char* cp;
+		fprintf(fd, "  Ink Names: ");
+		i = td->td_samplesperpixel;
+		sep = "";
+		for (cp = td->td_inknames; i > 0; cp = strchr(cp,'\0')+1, i--) {
+			fputs(sep, fd);
+			_TIFFprintAscii(fd, cp);
+			sep = ", ";
+		}
+                fputs("\n", fd);
+	}
+	if (TIFFFieldSet(tif,FIELD_THRESHHOLDING)) {
+		fprintf(fd, "  Thresholding: ");
+		switch (td->td_threshholding) {
+		case THRESHHOLD_BILEVEL:
+			fprintf(fd, "bilevel art scan\n");
+			break;
+		case THRESHHOLD_HALFTONE:
+			fprintf(fd, "halftone or dithered scan\n");
+			break;
+		case THRESHHOLD_ERRORDIFFUSE:
+			fprintf(fd, "error diffused\n");
+			break;
+		default:
+			fprintf(fd, "%u (0x%x)\n",
+			    td->td_threshholding, td->td_threshholding);
+			break;
+		}
+	}
+	if (TIFFFieldSet(tif,FIELD_FILLORDER)) {
+		fprintf(fd, "  FillOrder: ");
+		switch (td->td_fillorder) {
+		case FILLORDER_MSB2LSB:
+			fprintf(fd, "msb-to-lsb\n");
+			break;
+		case FILLORDER_LSB2MSB:
+			fprintf(fd, "lsb-to-msb\n");
+			break;
+		default:
+			fprintf(fd, "%u (0x%x)\n",
+			    td->td_fillorder, td->td_fillorder);
+			break;
+		}
+	}
+	if (TIFFFieldSet(tif,FIELD_YCBCRSUBSAMPLING))
+        {
+            /*
+             * For hacky reasons (see tif_jpeg.c - JPEGFixupTestSubsampling),
+             * we need to fetch this rather than trust what is in our
+             * structures.
+             */
+            uint16 subsampling[2];
+
+            TIFFGetField( tif, TIFFTAG_YCBCRSUBSAMPLING, 
+                          subsampling + 0, subsampling + 1 );
+		fprintf(fd, "  YCbCr Subsampling: %u, %u\n",
+                        subsampling[0], subsampling[1] );
+        }
+	if (TIFFFieldSet(tif,FIELD_YCBCRPOSITIONING)) {
+		fprintf(fd, "  YCbCr Positioning: ");
+		switch (td->td_ycbcrpositioning) {
+		case YCBCRPOSITION_CENTERED:
+			fprintf(fd, "centered\n");
+			break;
+		case YCBCRPOSITION_COSITED:
+			fprintf(fd, "cosited\n");
+			break;
+		default:
+			fprintf(fd, "%u (0x%x)\n",
+			    td->td_ycbcrpositioning, td->td_ycbcrpositioning);
+			break;
+		}
+	}
+	if (TIFFFieldSet(tif,FIELD_HALFTONEHINTS))
+		fprintf(fd, "  Halftone Hints: light %u dark %u\n",
+		    td->td_halftonehints[0], td->td_halftonehints[1]);
+	if (TIFFFieldSet(tif,FIELD_ORIENTATION)) {
+		fprintf(fd, "  Orientation: ");
+		if (td->td_orientation < NORIENTNAMES)
+			fprintf(fd, "%s\n", orientNames[td->td_orientation]);
+		else
+			fprintf(fd, "%u (0x%x)\n",
+			    td->td_orientation, td->td_orientation);
+	}
+	if (TIFFFieldSet(tif,FIELD_SAMPLESPERPIXEL))
+		fprintf(fd, "  Samples/Pixel: %u\n", td->td_samplesperpixel);
+	if (TIFFFieldSet(tif,FIELD_ROWSPERSTRIP)) {
+		fprintf(fd, "  Rows/Strip: ");
+		if (td->td_rowsperstrip == (uint32) -1)
+			fprintf(fd, "(infinite)\n");
+		else
+			fprintf(fd, "%lu\n", (unsigned long) td->td_rowsperstrip);
+	}
+	if (TIFFFieldSet(tif,FIELD_MINSAMPLEVALUE))
+		fprintf(fd, "  Min Sample Value: %u\n", td->td_minsamplevalue);
+	if (TIFFFieldSet(tif,FIELD_MAXSAMPLEVALUE))
+		fprintf(fd, "  Max Sample Value: %u\n", td->td_maxsamplevalue);
+	if (TIFFFieldSet(tif,FIELD_SMINSAMPLEVALUE))
+		fprintf(fd, "  SMin Sample Value: %g\n",
+		    td->td_sminsamplevalue);
+	if (TIFFFieldSet(tif,FIELD_SMAXSAMPLEVALUE))
+		fprintf(fd, "  SMax Sample Value: %g\n",
+		    td->td_smaxsamplevalue);
+	if (TIFFFieldSet(tif,FIELD_PLANARCONFIG)) {
+		fprintf(fd, "  Planar Configuration: ");
+		switch (td->td_planarconfig) {
+		case PLANARCONFIG_CONTIG:
+			fprintf(fd, "single image plane\n");
+			break;
+		case PLANARCONFIG_SEPARATE:
+			fprintf(fd, "separate image planes\n");
+			break;
+		default:
+			fprintf(fd, "%u (0x%x)\n",
+			    td->td_planarconfig, td->td_planarconfig);
+			break;
+		}
+	}
+	if (TIFFFieldSet(tif,FIELD_PAGENUMBER))
+		fprintf(fd, "  Page Number: %u-%u\n",
+		    td->td_pagenumber[0], td->td_pagenumber[1]);
+	if (TIFFFieldSet(tif,FIELD_COLORMAP)) {
+		fprintf(fd, "  Color Map: ");
+		if (flags & TIFFPRINT_COLORMAP) {
+			fprintf(fd, "\n");
+			n = 1L<<td->td_bitspersample;
+			for (l = 0; l < n; l++)
+				fprintf(fd, "   %5lu: %5u %5u %5u\n",
+				    l,
+				    td->td_colormap[0][l],
+				    td->td_colormap[1][l],
+				    td->td_colormap[2][l]);
+		} else
+			fprintf(fd, "(present)\n");
+	}
+	if (TIFFFieldSet(tif,FIELD_TRANSFERFUNCTION)) {
+		fprintf(fd, "  Transfer Function: ");
+		if (flags & TIFFPRINT_CURVES) {
+			fprintf(fd, "\n");
+			n = 1L<<td->td_bitspersample;
+			for (l = 0; l < n; l++) {
+				fprintf(fd, "    %2lu: %5u",
+				    l, td->td_transferfunction[0][l]);
+				for (i = 1; i < td->td_samplesperpixel; i++)
+					fprintf(fd, " %5u",
+					    td->td_transferfunction[i][l]);
+				fputc('\n', fd);
+			}
+		} else
+			fprintf(fd, "(present)\n");
+	}
+	if (TIFFFieldSet(tif, FIELD_SUBIFD)) {
+		fprintf(fd, "  SubIFD Offsets:");
+		for (i = 0; i < td->td_nsubifd; i++)
+			fprintf(fd, " %5lu", (long) td->td_subifd[i]);
+		fputc('\n', fd);
+	}
+
+        /*
+        ** Custom tag support.
+        */
+        {
+            int  i;
+            short count;
+
+            count = (short) TIFFGetTagListCount(tif);
+            for(i = 0; i < count; i++) {
+                ttag_t  tag = TIFFGetTagListEntry(tif, i);
+                const TIFFFieldInfo *fip;
+                uint16 value_count;
+                int mem_alloc = 0;
+                void *raw_data;
+
+                fip = TIFFFieldWithTag(tif, tag);
+                if(fip == NULL)
+			continue;
+
+		if(fip->field_passcount) {
+			if(TIFFGetField(tif, tag, &value_count, &raw_data) != 1)
+				continue;
+		} else {
+			if (fip->field_readcount == TIFF_VARIABLE
+			    || fip->field_readcount == TIFF_VARIABLE2)
+				value_count = 1;
+			else if (fip->field_readcount == TIFF_SPP)
+				value_count = td->td_samplesperpixel;
+			else
+				value_count = fip->field_readcount;
+			if ((fip->field_type == TIFF_ASCII
+			     || fip->field_readcount == TIFF_VARIABLE
+			     || fip->field_readcount == TIFF_VARIABLE2
+			     || fip->field_readcount == TIFF_SPP
+			     || value_count > 1)
+			    && fip->field_tag != TIFFTAG_PAGENUMBER
+			    && fip->field_tag != TIFFTAG_HALFTONEHINTS
+			    && fip->field_tag != TIFFTAG_YCBCRSUBSAMPLING
+			    && fip->field_tag != TIFFTAG_DOTRANGE) {
+				if(TIFFGetField(tif, tag, &raw_data) != 1)
+					continue;
+			} else if (fip->field_tag != TIFFTAG_PAGENUMBER
+				   && fip->field_tag != TIFFTAG_HALFTONEHINTS
+				   && fip->field_tag != TIFFTAG_YCBCRSUBSAMPLING
+				   && fip->field_tag != TIFFTAG_DOTRANGE) {
+				raw_data = _TIFFmalloc(
+					_TIFFDataSize(fip->field_type)
+					* value_count);
+				mem_alloc = 1;
+				if(TIFFGetField(tif, tag, raw_data) != 1) {
+					_TIFFfree(raw_data);
+					continue;
+				}
+			} else {
+				/* 
+				 * XXX: Should be fixed and removed, see the
+				 * notes related to TIFFTAG_PAGENUMBER,
+				 * TIFFTAG_HALFTONEHINTS,
+				 * TIFFTAG_YCBCRSUBSAMPLING and
+				 * TIFFTAG_DOTRANGE tags in tif_dir.c. */
+				char *tmp;
+				raw_data = _TIFFmalloc(
+					_TIFFDataSize(fip->field_type)
+					* value_count);
+				tmp = raw_data;
+				mem_alloc = 1;
+				if(TIFFGetField(tif, tag, tmp,
+				tmp + _TIFFDataSize(fip->field_type)) != 1) {
+					_TIFFfree(raw_data);
+					continue;
+				}
+			}
+		}
+
+		/*
+		 * Catch the tags which needs to be specially handled and
+		 * pretty print them. If tag not handled in
+		 * _TIFFPrettyPrintField() fall down and print it as any other
+		 * tag.
+		 */
+		if (_TIFFPrettyPrintField(tif, fd, tag, value_count, raw_data)) {
+			if(mem_alloc)
+				_TIFFfree(raw_data);
+			continue;
+		}
+		else
+			_TIFFPrintField(fd, fip, value_count, raw_data);
+
+		if(mem_alloc)
+			_TIFFfree(raw_data);
+            }
+        }
+        
+	if (tif->tif_tagmethods.printdir)
+		(*tif->tif_tagmethods.printdir)(tif, fd, flags);
+	if ((flags & TIFFPRINT_STRIPS) &&
+	    TIFFFieldSet(tif,FIELD_STRIPOFFSETS)) {
+		tstrip_t s;
+
+		fprintf(fd, "  %lu %s:\n",
+		    (long) td->td_nstrips,
+		    isTiled(tif) ? "Tiles" : "Strips");
+		for (s = 0; s < td->td_nstrips; s++)
+			fprintf(fd, "    %3lu: [%8lu, %8lu]\n",
+			    (unsigned long) s,
+			    (unsigned long) td->td_stripoffset[s],
+			    (unsigned long) td->td_stripbytecount[s]);
+	}
+}
+
+void
+_TIFFprintAscii(FILE* fd, const char* cp)
+{
+	for (; *cp != '\0'; cp++) {
+		const char* tp;
+
+		if (isprint((int)*cp)) {
+			fputc(*cp, fd);
+			continue;
+		}
+		for (tp = "\tt\bb\rr\nn\vv"; *tp; tp++)
+			if (*tp++ == *cp)
+				break;
+		if (*tp)
+			fprintf(fd, "\\%c", *tp);
+		else
+			fprintf(fd, "\\%03o", *cp & 0xff);
+	}
+}
+
+void
+_TIFFprintAsciiTag(FILE* fd, const char* name, const char* value)
+{
+	fprintf(fd, "  %s: \"", name);
+	_TIFFprintAscii(fd, value);
+	fprintf(fd, "\"\n");
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_read.c b/src/libtiff/tif_read.c
new file mode 100644
index 0000000..7bc580e
--- /dev/null
+++ b/src/libtiff/tif_read.c
@@ -0,0 +1,650 @@
+/* $Id: tif_read.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ * Scanline-oriented Read Support
+ */
+#include "tiffiop.h"
+#include <stdio.h>
+
+	int TIFFFillStrip(TIFF*, tstrip_t);
+	int TIFFFillTile(TIFF*, ttile_t);
+static	int TIFFStartStrip(TIFF*, tstrip_t);
+static	int TIFFStartTile(TIFF*, ttile_t);
+static	int TIFFCheckRead(TIFF*, int);
+
+#define	NOSTRIP	((tstrip_t) -1)			/* undefined state */
+#define	NOTILE	((ttile_t) -1)			/* undefined state */
+
+/*
+ * Seek to a random row+sample in a file.
+ */
+static int
+TIFFSeek(TIFF* tif, uint32 row, tsample_t sample)
+{
+	register TIFFDirectory *td = &tif->tif_dir;
+	tstrip_t strip;
+
+	if (row >= td->td_imagelength) {	/* out of range */
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%lu: Row out of range, max %lu",
+		    (unsigned long) row, (unsigned long) td->td_imagelength);
+		return (0);
+	}
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+		if (sample >= td->td_samplesperpixel) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "%lu: Sample out of range, max %lu",
+			    (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
+			return (0);
+		}
+		strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
+	} else
+		strip = row / td->td_rowsperstrip;
+	if (strip != tif->tif_curstrip) { 	/* different strip, refill */
+		if (!TIFFFillStrip(tif, strip))
+			return (0);
+	} else if (row < tif->tif_row) {
+		/*
+		 * Moving backwards within the same strip: backup
+		 * to the start and then decode forward (below).
+		 *
+		 * NB: If you're planning on lots of random access within a
+		 * strip, it's better to just read and decode the entire
+		 * strip, and then access the decoded data in a random fashion.
+		 */
+		if (!TIFFStartStrip(tif, strip))
+			return (0);
+	}
+	if (row != tif->tif_row) {
+		/*
+		 * Seek forward to the desired row.
+		 */
+		if (!(*tif->tif_seek)(tif, row - tif->tif_row))
+			return (0);
+		tif->tif_row = row;
+	}
+	return (1);
+}
+
+int
+TIFFReadScanline(TIFF* tif, tdata_t buf, uint32 row, tsample_t sample)
+{
+	int e;
+
+	if (!TIFFCheckRead(tif, 0))
+		return (-1);
+	if( (e = TIFFSeek(tif, row, sample)) != 0) {
+		/*
+		 * Decompress desired row into user buffer.
+		 */
+		e = (*tif->tif_decoderow)
+		    (tif, (tidata_t) buf, tif->tif_scanlinesize, sample);
+
+                /* we are now poised at the beginning of the next row */
+                tif->tif_row = row + 1;
+
+		if (e)
+			(*tif->tif_postdecode)(tif, (tidata_t) buf,
+			    tif->tif_scanlinesize);
+	}
+	return (e > 0 ? 1 : -1);
+}
+
+/*
+ * Read a strip of data and decompress the specified
+ * amount into the user-supplied buffer.
+ */
+tsize_t
+TIFFReadEncodedStrip(TIFF* tif, tstrip_t strip, tdata_t buf, tsize_t size)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	uint32 nrows;
+	tsize_t stripsize;
+        tstrip_t sep_strip, strips_per_sep;
+
+	if (!TIFFCheckRead(tif, 0))
+		return (-1);
+	if (strip >= td->td_nstrips) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%ld: Strip out of range, max %ld",
+		    (long) strip, (long) td->td_nstrips);
+		return (-1);
+	}
+	/*
+	 * Calculate the strip size according to the number of
+	 * rows in the strip (check for truncated last strip on any
+         * of the separations).
+	 */
+        if( td->td_rowsperstrip >= td->td_imagelength )
+            strips_per_sep = 1;
+        else
+            strips_per_sep = (td->td_imagelength+td->td_rowsperstrip-1)
+                / td->td_rowsperstrip;
+
+        sep_strip = strip % strips_per_sep;
+
+	if (sep_strip != strips_per_sep-1 ||
+	    (nrows = td->td_imagelength % td->td_rowsperstrip) == 0)
+		nrows = td->td_rowsperstrip;
+
+	stripsize = TIFFVStripSize(tif, nrows);
+	if (size == (tsize_t) -1)
+		size = stripsize;
+	else if (size > stripsize)
+		size = stripsize;
+	if (TIFFFillStrip(tif, strip) 
+            && (*tif->tif_decodestrip)(tif, (tidata_t) buf, size, 
+                         (tsample_t)(strip / td->td_stripsperimage)) > 0 ) {
+		(*tif->tif_postdecode)(tif, (tidata_t) buf, size);
+		return (size);
+	} else
+		return ((tsize_t) -1);
+}
+
+static tsize_t
+TIFFReadRawStrip1(TIFF* tif,
+    tstrip_t strip, tdata_t buf, tsize_t size, const char* module)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if (!isMapped(tif)) {
+		tsize_t cc;
+
+		if (!SeekOK(tif, td->td_stripoffset[strip])) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Seek error at scanline %lu, strip %lu",
+			    tif->tif_name,
+			    (unsigned long) tif->tif_row, (unsigned long) strip);
+			return (-1);
+		}
+		cc = TIFFReadFile(tif, buf, size);
+		if (cc != size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+		"%s: Read error at scanline %lu; got %lu bytes, expected %lu",
+			    tif->tif_name,
+			    (unsigned long) tif->tif_row,
+			    (unsigned long) cc,
+			    (unsigned long) size);
+			return (-1);
+		}
+	} else {
+		if (td->td_stripoffset[strip] + size > tif->tif_size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+    "%s: Read error at scanline %lu, strip %lu; got %lu bytes, expected %lu",
+			    tif->tif_name,
+			    (unsigned long) tif->tif_row,
+			    (unsigned long) strip,
+			    (unsigned long) tif->tif_size - td->td_stripoffset[strip],
+			    (unsigned long) size);
+			return (-1);
+		}
+		_TIFFmemcpy(buf, tif->tif_base + td->td_stripoffset[strip],
+                            size);
+	}
+	return (size);
+}
+
+/*
+ * Read a strip of data from the file.
+ */
+tsize_t
+TIFFReadRawStrip(TIFF* tif, tstrip_t strip, tdata_t buf, tsize_t size)
+{
+	static const char module[] = "TIFFReadRawStrip";
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t bytecount;
+
+	if (!TIFFCheckRead(tif, 0))
+		return ((tsize_t) -1);
+	if (strip >= td->td_nstrips) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%lu: Strip out of range, max %lu",
+		    (unsigned long) strip, (unsigned long) td->td_nstrips);
+		return ((tsize_t) -1);
+	}
+	bytecount = td->td_stripbytecount[strip];
+	if (bytecount <= 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "%lu: Invalid strip byte count, strip %lu",
+		    (unsigned long) bytecount, (unsigned long) strip);
+		return ((tsize_t) -1);
+	}
+	if (size != (tsize_t)-1 && size < bytecount)
+		bytecount = size;
+	return (TIFFReadRawStrip1(tif, strip, buf, bytecount, module));
+}
+
+/*
+ * Read the specified strip and setup for decoding. 
+ * The data buffer is expanded, as necessary, to
+ * hold the strip's data.
+ */
+int
+TIFFFillStrip(TIFF* tif, tstrip_t strip)
+{
+	static const char module[] = "TIFFFillStrip";
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t bytecount;
+
+	bytecount = td->td_stripbytecount[strip];
+	if (bytecount <= 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "%lu: Invalid strip byte count, strip %lu",
+		    (unsigned long) bytecount, (unsigned long) strip);
+		return (0);
+	}
+	if (isMapped(tif) &&
+	    (isFillOrder(tif, td->td_fillorder)
+             || (tif->tif_flags & TIFF_NOBITREV))) {
+		/*
+		 * The image is mapped into memory and we either don't
+		 * need to flip bits or the compression routine is going
+		 * to handle this operation itself.  In this case, avoid
+		 * copying the raw data and instead just reference the
+		 * data from the memory mapped file image.  This assumes
+		 * that the decompression routines do not modify the
+		 * contents of the raw data buffer (if they try to,
+		 * the application will get a fault since the file is
+		 * mapped read-only).
+		 */
+		if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata)
+			_TIFFfree(tif->tif_rawdata);
+		tif->tif_flags &= ~TIFF_MYBUFFER;
+		if ( td->td_stripoffset[strip] + bytecount > tif->tif_size) {
+			/*
+			 * This error message might seem strange, but it's
+			 * what would happen if a read were done instead.
+			 */
+			TIFFErrorExt(tif->tif_clientdata, module,
+		    "%s: Read error on strip %lu; got %lu bytes, expected %lu",
+			    tif->tif_name,
+			    (unsigned long) strip,
+			    (unsigned long) tif->tif_size - td->td_stripoffset[strip],
+			    (unsigned long) bytecount);
+			tif->tif_curstrip = NOSTRIP;
+			return (0);
+		}
+		tif->tif_rawdatasize = bytecount;
+		tif->tif_rawdata = tif->tif_base + td->td_stripoffset[strip];
+	} else {
+		/*
+		 * Expand raw data buffer, if needed, to
+		 * hold data strip coming from file
+		 * (perhaps should set upper bound on
+		 *  the size of a buffer we'll use?).
+		 */
+		if (bytecount > tif->tif_rawdatasize) {
+			tif->tif_curstrip = NOSTRIP;
+			if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
+				TIFFErrorExt(tif->tif_clientdata, module,
+				"%s: Data buffer too small to hold strip %lu",
+				    tif->tif_name, (unsigned long) strip);
+				return (0);
+			}
+			if (!TIFFReadBufferSetup(tif, 0,
+			    TIFFroundup(bytecount, 1024)))
+				return (0);
+		}
+		if (TIFFReadRawStrip1(tif, strip, (unsigned char *)tif->tif_rawdata,
+		    bytecount, module) != bytecount)
+			return (0);
+		if (!isFillOrder(tif, td->td_fillorder) &&
+		    (tif->tif_flags & TIFF_NOBITREV) == 0)
+			TIFFReverseBits(tif->tif_rawdata, bytecount);
+	}
+	return (TIFFStartStrip(tif, strip));
+}
+
+/*
+ * Tile-oriented Read Support
+ * Contributed by Nancy Cam (Silicon Graphics).
+ */
+
+/*
+ * Read and decompress a tile of data.  The
+ * tile is selected by the (x,y,z,s) coordinates.
+ */
+tsize_t
+TIFFReadTile(TIFF* tif,
+    tdata_t buf, uint32 x, uint32 y, uint32 z, tsample_t s)
+{
+	if (!TIFFCheckRead(tif, 1) || !TIFFCheckTile(tif, x, y, z, s))
+		return (-1);
+	return (TIFFReadEncodedTile(tif,
+	    TIFFComputeTile(tif, x, y, z, s), buf, (tsize_t) -1));
+}
+
+/*
+ * Read a tile of data and decompress the specified
+ * amount into the user-supplied buffer.
+ */
+tsize_t
+TIFFReadEncodedTile(TIFF* tif, ttile_t tile, tdata_t buf, tsize_t size)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t tilesize = tif->tif_tilesize;
+
+	if (!TIFFCheckRead(tif, 1))
+		return (-1);
+	if (tile >= td->td_nstrips) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%ld: Tile out of range, max %ld",
+		    (long) tile, (unsigned long) td->td_nstrips);
+		return (-1);
+	}
+	if (size == (tsize_t) -1)
+		size = tilesize;
+	else if (size > tilesize)
+		size = tilesize;
+	if (TIFFFillTile(tif, tile) && (*tif->tif_decodetile)(tif,
+	    (tidata_t) buf, size, (tsample_t)(tile/td->td_stripsperimage))) {
+		(*tif->tif_postdecode)(tif, (tidata_t) buf, size);
+		return (size);
+	} else
+		return (-1);
+}
+
+static tsize_t
+TIFFReadRawTile1(TIFF* tif,
+    ttile_t tile, tdata_t buf, tsize_t size, const char* module)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if (!isMapped(tif)) {
+		tsize_t cc;
+
+		if (!SeekOK(tif, td->td_stripoffset[tile])) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Seek error at row %ld, col %ld, tile %ld",
+			    tif->tif_name,
+			    (long) tif->tif_row,
+			    (long) tif->tif_col,
+			    (long) tile);
+			return ((tsize_t) -1);
+		}
+		cc = TIFFReadFile(tif, buf, size);
+		if (cc != size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+	    "%s: Read error at row %ld, col %ld; got %lu bytes, expected %lu",
+			    tif->tif_name,
+			    (long) tif->tif_row,
+			    (long) tif->tif_col,
+			    (unsigned long) cc,
+			    (unsigned long) size);
+			return ((tsize_t) -1);
+		}
+	} else {
+		if (td->td_stripoffset[tile] + size > tif->tif_size) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+    "%s: Read error at row %ld, col %ld, tile %ld; got %lu bytes, expected %lu",
+			    tif->tif_name,
+			    (long) tif->tif_row,
+			    (long) tif->tif_col,
+			    (long) tile,
+			    (unsigned long) tif->tif_size - td->td_stripoffset[tile],
+			    (unsigned long) size);
+			return ((tsize_t) -1);
+		}
+		_TIFFmemcpy(buf, tif->tif_base + td->td_stripoffset[tile], size);
+	}
+	return (size);
+}
+
+/*
+ * Read a tile of data from the file.
+ */
+tsize_t
+TIFFReadRawTile(TIFF* tif, ttile_t tile, tdata_t buf, tsize_t size)
+{
+	static const char module[] = "TIFFReadRawTile";
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t bytecount;
+
+	if (!TIFFCheckRead(tif, 1))
+		return ((tsize_t) -1);
+	if (tile >= td->td_nstrips) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%lu: Tile out of range, max %lu",
+		    (unsigned long) tile, (unsigned long) td->td_nstrips);
+		return ((tsize_t) -1);
+	}
+	bytecount = td->td_stripbytecount[tile];
+	if (size != (tsize_t) -1 && size < bytecount)
+		bytecount = size;
+	return (TIFFReadRawTile1(tif, tile, buf, bytecount, module));
+}
+
+/*
+ * Read the specified tile and setup for decoding. 
+ * The data buffer is expanded, as necessary, to
+ * hold the tile's data.
+ */
+int
+TIFFFillTile(TIFF* tif, ttile_t tile)
+{
+	static const char module[] = "TIFFFillTile";
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t bytecount;
+
+	bytecount = td->td_stripbytecount[tile];
+	if (bytecount <= 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "%lu: Invalid tile byte count, tile %lu",
+		    (unsigned long) bytecount, (unsigned long) tile);
+		return (0);
+	}
+	if (isMapped(tif) &&
+	    (isFillOrder(tif, td->td_fillorder)
+             || (tif->tif_flags & TIFF_NOBITREV))) {
+		/*
+		 * The image is mapped into memory and we either don't
+		 * need to flip bits or the compression routine is going
+		 * to handle this operation itself.  In this case, avoid
+		 * copying the raw data and instead just reference the
+		 * data from the memory mapped file image.  This assumes
+		 * that the decompression routines do not modify the
+		 * contents of the raw data buffer (if they try to,
+		 * the application will get a fault since the file is
+		 * mapped read-only).
+		 */
+		if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata)
+			_TIFFfree(tif->tif_rawdata);
+		tif->tif_flags &= ~TIFF_MYBUFFER;
+		if ( td->td_stripoffset[tile] + bytecount > tif->tif_size) {
+			tif->tif_curtile = NOTILE;
+			return (0);
+		}
+		tif->tif_rawdatasize = bytecount;
+		tif->tif_rawdata = tif->tif_base + td->td_stripoffset[tile];
+	} else {
+		/*
+		 * Expand raw data buffer, if needed, to
+		 * hold data tile coming from file
+		 * (perhaps should set upper bound on
+		 *  the size of a buffer we'll use?).
+		 */
+		if (bytecount > tif->tif_rawdatasize) {
+			tif->tif_curtile = NOTILE;
+			if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
+				TIFFErrorExt(tif->tif_clientdata, module,
+				"%s: Data buffer too small to hold tile %ld",
+				    tif->tif_name, (long) tile);
+				return (0);
+			}
+			if (!TIFFReadBufferSetup(tif, 0,
+			    TIFFroundup(bytecount, 1024)))
+				return (0);
+		}
+		if (TIFFReadRawTile1(tif, tile,
+                                     (unsigned char *)tif->tif_rawdata,
+                                     bytecount, module) != bytecount)
+			return (0);
+		if (!isFillOrder(tif, td->td_fillorder) &&
+		    (tif->tif_flags & TIFF_NOBITREV) == 0)
+			TIFFReverseBits(tif->tif_rawdata, bytecount);
+	}
+	return (TIFFStartTile(tif, tile));
+}
+
+/*
+ * Setup the raw data buffer in preparation for
+ * reading a strip of raw data.  If the buffer
+ * is specified as zero, then a buffer of appropriate
+ * size is allocated by the library.  Otherwise,
+ * the client must guarantee that the buffer is
+ * large enough to hold any individual strip of
+ * raw data.
+ */
+int
+TIFFReadBufferSetup(TIFF* tif, tdata_t bp, tsize_t size)
+{
+	static const char module[] = "TIFFReadBufferSetup";
+
+	if (tif->tif_rawdata) {
+		if (tif->tif_flags & TIFF_MYBUFFER)
+			_TIFFfree(tif->tif_rawdata);
+		tif->tif_rawdata = NULL;
+	}
+	if (bp) {
+		tif->tif_rawdatasize = size;
+		tif->tif_rawdata = (tidata_t) bp;
+		tif->tif_flags &= ~TIFF_MYBUFFER;
+	} else {
+		tif->tif_rawdatasize = TIFFroundup(size, 1024);
+		tif->tif_rawdata = (tidata_t) _TIFFmalloc(tif->tif_rawdatasize);
+		tif->tif_flags |= TIFF_MYBUFFER;
+	}
+	if (tif->tif_rawdata == NULL) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+		    "%s: No space for data buffer at scanline %ld",
+		    tif->tif_name, (long) tif->tif_row);
+		tif->tif_rawdatasize = 0;
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * Set state to appear as if a
+ * strip has just been read in.
+ */
+static int
+TIFFStartStrip(TIFF* tif, tstrip_t strip)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+		if (!(*tif->tif_setupdecode)(tif))
+			return (0);
+		tif->tif_flags |= TIFF_CODERSETUP;
+	}
+	tif->tif_curstrip = strip;
+	tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+	tif->tif_rawcp = tif->tif_rawdata;
+	tif->tif_rawcc = td->td_stripbytecount[strip];
+	return ((*tif->tif_predecode)(tif,
+			(tsample_t)(strip / td->td_stripsperimage)));
+}
+
+/*
+ * Set state to appear as if a
+ * tile has just been read in.
+ */
+static int
+TIFFStartTile(TIFF* tif, ttile_t tile)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+		if (!(*tif->tif_setupdecode)(tif))
+			return (0);
+		tif->tif_flags |= TIFF_CODERSETUP;
+	}
+	tif->tif_curtile = tile;
+	tif->tif_row =
+	    (tile % TIFFhowmany(td->td_imagewidth, td->td_tilewidth)) *
+		td->td_tilelength;
+	tif->tif_col =
+	    (tile % TIFFhowmany(td->td_imagelength, td->td_tilelength)) *
+		td->td_tilewidth;
+	tif->tif_rawcp = tif->tif_rawdata;
+	tif->tif_rawcc = td->td_stripbytecount[tile];
+	return ((*tif->tif_predecode)(tif,
+			(tsample_t)(tile/td->td_stripsperimage)));
+}
+
+static int
+TIFFCheckRead(TIFF* tif, int tiles)
+{
+	if (tif->tif_mode == O_WRONLY) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "File not open for reading");
+		return (0);
+	}
+	if (tiles ^ isTiled(tif)) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, tiles ?
+		    "Can not read tiles from a stripped image" :
+		    "Can not read scanlines from a tiled image");
+		return (0);
+	}
+	return (1);
+}
+
+void
+_TIFFNoPostDecode(TIFF* tif, tidata_t buf, tsize_t cc)
+{
+    (void) tif; (void) buf; (void) cc;
+}
+
+void
+_TIFFSwab16BitData(TIFF* tif, tidata_t buf, tsize_t cc)
+{
+    (void) tif;
+    assert((cc & 1) == 0);
+    TIFFSwabArrayOfShort((uint16*) buf, cc/2);
+}
+
+void
+_TIFFSwab24BitData(TIFF* tif, tidata_t buf, tsize_t cc)
+{
+    (void) tif;
+    assert((cc % 3) == 0);
+    TIFFSwabArrayOfTriples((uint8*) buf, cc/3);
+}
+
+void
+_TIFFSwab32BitData(TIFF* tif, tidata_t buf, tsize_t cc)
+{
+    (void) tif;
+    assert((cc & 3) == 0);
+    TIFFSwabArrayOfLong((uint32*) buf, cc/4);
+}
+
+void
+_TIFFSwab64BitData(TIFF* tif, tidata_t buf, tsize_t cc)
+{
+    (void) tif;
+    assert((cc & 7) == 0);
+    TIFFSwabArrayOfDouble((double*) buf, cc/8);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_strip.c b/src/libtiff/tif_strip.c
new file mode 100644
index 0000000..e6a0fb7
--- /dev/null
+++ b/src/libtiff/tif_strip.c
@@ -0,0 +1,294 @@
+/* $Id: tif_strip.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Strip-organized Image Support Routines.
+ */
+#include "tiffiop.h"
+
+static uint32
+summarize(TIFF* tif, size_t summand1, size_t summand2, const char* where)
+{
+	/*
+	 * XXX: We are using casting to uint32 here, bacause sizeof(size_t)
+	 * may be larger than sizeof(uint32) on 64-bit architectures.
+	 */
+	uint32	bytes = summand1 + summand2;
+
+	if (bytes - summand1 != summand2) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Integer overflow in %s", where);
+		bytes = 0;
+	}
+
+	return (bytes);
+}
+
+static uint32
+multiply(TIFF* tif, size_t nmemb, size_t elem_size, const char* where)
+{
+	uint32	bytes = nmemb * elem_size;
+
+	if (elem_size && bytes / elem_size != nmemb) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Integer overflow in %s", where);
+		bytes = 0;
+	}
+
+	return (bytes);
+}
+
+/*
+ * Compute which strip a (row,sample) value is in.
+ */
+tstrip_t
+TIFFComputeStrip(TIFF* tif, uint32 row, tsample_t sample)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	tstrip_t strip;
+
+	strip = row / td->td_rowsperstrip;
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+		if (sample >= td->td_samplesperpixel) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "%lu: Sample out of range, max %lu",
+			    (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
+			return ((tstrip_t) 0);
+		}
+		strip += sample*td->td_stripsperimage;
+	}
+	return (strip);
+}
+
+/*
+ * Compute how many strips are in an image.
+ */
+tstrip_t
+TIFFNumberOfStrips(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	tstrip_t nstrips;
+
+	nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
+	     TIFFhowmany(td->td_imagelength, td->td_rowsperstrip));
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+		nstrips = multiply(tif, nstrips, td->td_samplesperpixel,
+				   "TIFFNumberOfStrips");
+	return (nstrips);
+}
+
+/*
+ * Compute the # bytes in a variable height, row-aligned strip.
+ */
+tsize_t
+TIFFVStripSize(TIFF* tif, uint32 nrows)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if (nrows == (uint32) -1)
+		nrows = td->td_imagelength;
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
+	    td->td_photometric == PHOTOMETRIC_YCBCR &&
+	    !isUpSampled(tif)) {
+		/*
+		 * Packed YCbCr data contain one Cb+Cr for every
+		 * HorizontalSampling*VerticalSampling Y values.
+		 * Must also roundup width and height when calculating
+		 * since images that are not a multiple of the
+		 * horizontal/vertical subsampling area include
+		 * YCbCr data for the extended image.
+		 */
+                uint16 ycbcrsubsampling[2];
+                tsize_t w, scanline, samplingarea;
+
+                TIFFGetField( tif, TIFFTAG_YCBCRSUBSAMPLING, 
+                              ycbcrsubsampling + 0, 
+                              ycbcrsubsampling + 1 );
+
+		samplingarea = ycbcrsubsampling[0]*ycbcrsubsampling[1];
+		if (samplingarea == 0) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+				     "Invalid YCbCr subsampling");
+			return 0;
+		}
+
+		w = TIFFroundup(td->td_imagewidth, ycbcrsubsampling[0]);
+		scanline = TIFFhowmany8(multiply(tif, w, td->td_bitspersample,
+						 "TIFFVStripSize"));
+		nrows = TIFFroundup(nrows, ycbcrsubsampling[1]);
+		/* NB: don't need TIFFhowmany here 'cuz everything is rounded */
+		scanline = multiply(tif, nrows, scanline, "TIFFVStripSize");
+		return ((tsize_t)
+		    summarize(tif, scanline,
+			      multiply(tif, 2, scanline / samplingarea,
+				       "TIFFVStripSize"), "TIFFVStripSize"));
+	} else
+		return ((tsize_t) multiply(tif, nrows, TIFFScanlineSize(tif),
+					   "TIFFVStripSize"));
+}
+
+
+/*
+ * Compute the # bytes in a raw strip.
+ */
+tsize_t
+TIFFRawStripSize(TIFF* tif, tstrip_t strip)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+	tsize_t bytecount = td->td_stripbytecount[strip];
+
+	if (bytecount <= 0) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			  "%lu: Invalid strip byte count, strip %lu",
+			  (unsigned long) bytecount, (unsigned long) strip);
+		bytecount = (tsize_t) -1;
+	}
+
+	return bytecount;
+}
+
+/*
+ * Compute the # bytes in a (row-aligned) strip.
+ *
+ * Note that if RowsPerStrip is larger than the
+ * recorded ImageLength, then the strip size is
+ * truncated to reflect the actual space required
+ * to hold the strip.
+ */
+tsize_t
+TIFFStripSize(TIFF* tif)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+	uint32 rps = td->td_rowsperstrip;
+	if (rps > td->td_imagelength)
+		rps = td->td_imagelength;
+	return (TIFFVStripSize(tif, rps));
+}
+
+/*
+ * Compute a default strip size based on the image
+ * characteristics and a requested value.  If the
+ * request is <1 then we choose a strip size according
+ * to certain heuristics.
+ */
+uint32
+TIFFDefaultStripSize(TIFF* tif, uint32 request)
+{
+	return (*tif->tif_defstripsize)(tif, request);
+}
+
+uint32
+_TIFFDefaultStripSize(TIFF* tif, uint32 s)
+{
+	if ((int32) s < 1) {
+		/*
+		 * If RowsPerStrip is unspecified, try to break the
+		 * image up into strips that are approximately
+		 * STRIP_SIZE_DEFAULT bytes long.
+		 */
+		tsize_t scanline = TIFFScanlineSize(tif);
+		s = (uint32)STRIP_SIZE_DEFAULT / (scanline == 0 ? 1 : scanline);
+		if (s == 0)		/* very wide images */
+			s = 1;
+	}
+	return (s);
+}
+
+/*
+ * Return the number of bytes to read/write in a call to
+ * one of the scanline-oriented i/o routines.  Note that
+ * this number may be 1/samples-per-pixel if data is
+ * stored as separate planes.
+ */
+tsize_t
+TIFFScanlineSize(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t scanline;
+	
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+		if (td->td_photometric == PHOTOMETRIC_YCBCR
+		    && !isUpSampled(tif)) {
+			uint16 ycbcrsubsampling[2];
+
+			TIFFGetField(tif, TIFFTAG_YCBCRSUBSAMPLING, 
+				     ycbcrsubsampling + 0,
+				     ycbcrsubsampling + 1);
+
+			if (ycbcrsubsampling[0] == 0) {
+				TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+					     "Invalid YCbCr subsampling");
+				return 0;
+			}
+
+			scanline = TIFFroundup(td->td_imagewidth,
+					       ycbcrsubsampling[0]);
+			scanline = TIFFhowmany8(multiply(tif, scanline,
+							 td->td_bitspersample,
+							 "TIFFScanlineSize"));
+			return ((tsize_t)
+				summarize(tif, scanline,
+					  multiply(tif, 2,
+						scanline / ycbcrsubsampling[0],
+						"TIFFVStripSize"),
+					  "TIFFVStripSize"));
+		} else {
+			scanline = multiply(tif, td->td_imagewidth,
+					    td->td_samplesperpixel,
+					    "TIFFScanlineSize");
+		}
+	} else
+		scanline = td->td_imagewidth;
+	return ((tsize_t) TIFFhowmany8(multiply(tif, scanline,
+						td->td_bitspersample,
+						"TIFFScanlineSize")));
+}
+
+/*
+ * Return the number of bytes required to store a complete
+ * decoded and packed raster scanline (as opposed to the
+ * I/O size returned by TIFFScanlineSize which may be less
+ * if data is store as separate planes).
+ */
+tsize_t
+TIFFRasterScanlineSize(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t scanline;
+	
+	scanline = multiply (tif, td->td_bitspersample, td->td_imagewidth,
+			     "TIFFRasterScanlineSize");
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
+		scanline = multiply (tif, scanline, td->td_samplesperpixel,
+				     "TIFFRasterScanlineSize");
+		return ((tsize_t) TIFFhowmany8(scanline));
+	} else
+		return ((tsize_t) multiply (tif, TIFFhowmany8(scanline),
+					    td->td_samplesperpixel,
+					    "TIFFRasterScanlineSize"));
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_swab.c b/src/libtiff/tif_swab.c
new file mode 100644
index 0000000..f8e977e
--- /dev/null
+++ b/src/libtiff/tif_swab.c
@@ -0,0 +1,235 @@
+/* $Id: tif_swab.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library Bit & Byte Swapping Support.
+ *
+ * XXX We assume short = 16-bits and long = 32-bits XXX
+ */
+#include "tiffiop.h"
+
+#ifndef TIFFSwabShort
+void
+TIFFSwabShort(uint16* wp)
+{
+	register unsigned char* cp = (unsigned char*) wp;
+	unsigned char t;
+
+	t = cp[1]; cp[1] = cp[0]; cp[0] = t;
+}
+#endif
+
+#ifndef TIFFSwabLong
+void
+TIFFSwabLong(uint32* lp)
+{
+	register unsigned char* cp = (unsigned char*) lp;
+	unsigned char t;
+
+	t = cp[3]; cp[3] = cp[0]; cp[0] = t;
+	t = cp[2]; cp[2] = cp[1]; cp[1] = t;
+}
+#endif
+
+#ifndef TIFFSwabArrayOfShort
+void
+TIFFSwabArrayOfShort(uint16* wp, register unsigned long n)
+{
+	register unsigned char* cp;
+	register unsigned char t;
+
+	/* XXX unroll loop some */
+	while (n-- > 0) {
+		cp = (unsigned char*) wp;
+		t = cp[1]; cp[1] = cp[0]; cp[0] = t;
+		wp++;
+	}
+}
+#endif
+
+#ifndef TIFFSwabArrayOfTriples
+void
+TIFFSwabArrayOfTriples(uint8* tp, unsigned long n)
+{
+	unsigned char* cp;
+	unsigned char t;
+
+	/* XXX unroll loop some */
+	while (n-- > 0) {
+		cp = (unsigned char*) tp;
+		t = cp[2]; cp[2] = cp[0]; cp[0] = t;
+		tp += 3;
+	}
+}
+#endif
+
+#ifndef TIFFSwabArrayOfLong
+void
+TIFFSwabArrayOfLong(register uint32* lp, register unsigned long n)
+{
+	register unsigned char *cp;
+	register unsigned char t;
+
+	/* XXX unroll loop some */
+	while (n-- > 0) {
+		cp = (unsigned char *)lp;
+		t = cp[3]; cp[3] = cp[0]; cp[0] = t;
+		t = cp[2]; cp[2] = cp[1]; cp[1] = t;
+		lp++;
+	}
+}
+#endif
+
+#ifndef TIFFSwabDouble
+void
+TIFFSwabDouble(double *dp)
+{
+        register uint32* lp = (uint32*) dp;
+        uint32 t;
+
+	TIFFSwabArrayOfLong(lp, 2);
+	t = lp[0]; lp[0] = lp[1]; lp[1] = t;
+}
+#endif
+
+#ifndef TIFFSwabArrayOfDouble
+void
+TIFFSwabArrayOfDouble(double* dp, register unsigned long n)
+{
+	register uint32* lp = (uint32*) dp;
+        register uint32 t;
+
+	TIFFSwabArrayOfLong(lp, n + n);
+        while (n-- > 0) {
+		t = lp[0]; lp[0] = lp[1]; lp[1] = t;
+                lp += 2;
+        }
+}
+#endif
+
+/*
+ * Bit reversal tables.  TIFFBitRevTable[<byte>] gives
+ * the bit reversed value of <byte>.  Used in various
+ * places in the library when the FillOrder requires
+ * bit reversal of byte values (e.g. CCITT Fax 3
+ * encoding/decoding).  TIFFNoBitRevTable is provided
+ * for algorithms that want an equivalent table that
+ * do not reverse bit values.
+ */
+static const unsigned char TIFFBitRevTable[256] = {
+    0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+    0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
+    0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+    0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
+    0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
+    0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+    0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
+    0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
+    0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+    0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
+    0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
+    0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+    0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
+    0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
+    0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+    0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
+    0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
+    0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+    0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
+    0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
+    0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+    0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
+    0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
+    0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+    0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
+    0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
+    0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+    0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
+    0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
+    0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+    0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
+    0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
+};
+static const unsigned char TIFFNoBitRevTable[256] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
+    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 
+    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 
+    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 
+    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 
+    0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 
+    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 
+    0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 
+    0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 
+    0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 
+    0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 
+    0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 
+    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 
+    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 
+    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 
+    0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 
+    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 
+    0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 
+    0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 
+    0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 
+    0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 
+    0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 
+    0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 
+    0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 
+    0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 
+    0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 
+    0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 
+    0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 
+    0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 
+    0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 
+    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 
+    0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 
+};
+
+const unsigned char*
+TIFFGetBitRevTable(int reversed)
+{
+	return (reversed ? TIFFBitRevTable : TIFFNoBitRevTable);
+}
+
+void
+TIFFReverseBits(register unsigned char* cp, register unsigned long n)
+{
+	for (; n > 8; n -= 8) {
+		cp[0] = TIFFBitRevTable[cp[0]];
+		cp[1] = TIFFBitRevTable[cp[1]];
+		cp[2] = TIFFBitRevTable[cp[2]];
+		cp[3] = TIFFBitRevTable[cp[3]];
+		cp[4] = TIFFBitRevTable[cp[4]];
+		cp[5] = TIFFBitRevTable[cp[5]];
+		cp[6] = TIFFBitRevTable[cp[6]];
+		cp[7] = TIFFBitRevTable[cp[7]];
+		cp += 8;
+	}
+	while (n-- > 0)
+		*cp = TIFFBitRevTable[*cp], cp++;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_thunder.c b/src/libtiff/tif_thunder.c
new file mode 100644
index 0000000..40f0618
--- /dev/null
+++ b/src/libtiff/tif_thunder.c
@@ -0,0 +1,158 @@
+/* $Id: tif_thunder.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef THUNDER_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * ThunderScan 4-bit Compression Algorithm Support
+ */
+
+/*
+ * ThunderScan uses an encoding scheme designed for
+ * 4-bit pixel values.  Data is encoded in bytes, with
+ * each byte split into a 2-bit code word and a 6-bit
+ * data value.  The encoding gives raw data, runs of
+ * pixels, or pixel values encoded as a delta from the
+ * previous pixel value.  For the latter, either 2-bit
+ * or 3-bit delta values are used, with the deltas packed
+ * into a single byte.
+ */
+#define	THUNDER_DATA		0x3f	/* mask for 6-bit data */
+#define	THUNDER_CODE		0xc0	/* mask for 2-bit code word */
+/* code values */
+#define	THUNDER_RUN		0x00	/* run of pixels w/ encoded count */
+#define	THUNDER_2BITDELTAS	0x40	/* 3 pixels w/ encoded 2-bit deltas */
+#define	    DELTA2_SKIP		2	/* skip code for 2-bit deltas */
+#define	THUNDER_3BITDELTAS	0x80	/* 2 pixels w/ encoded 3-bit deltas */
+#define	    DELTA3_SKIP		4	/* skip code for 3-bit deltas */
+#define	THUNDER_RAW		0xc0	/* raw data encoded */
+
+static const int twobitdeltas[4] = { 0, 1, 0, -1 };
+static const int threebitdeltas[8] = { 0, 1, 2, 3, 0, -3, -2, -1 };
+
+#define	SETPIXEL(op, v) { \
+	lastpixel = (v) & 0xf; \
+	if (npixels++ & 1) \
+	    *op++ |= lastpixel; \
+	else \
+	    op[0] = (tidataval_t) (lastpixel << 4); \
+}
+
+static int
+ThunderDecode(TIFF* tif, tidata_t op, tsize_t maxpixels)
+{
+	register unsigned char *bp;
+	register tsize_t cc;
+	unsigned int lastpixel;
+	tsize_t npixels;
+
+	bp = (unsigned char *)tif->tif_rawcp;
+	cc = tif->tif_rawcc;
+	lastpixel = 0;
+	npixels = 0;
+	while (cc > 0 && npixels < maxpixels) {
+		int n, delta;
+
+		n = *bp++, cc--;
+		switch (n & THUNDER_CODE) {
+		case THUNDER_RUN:		/* pixel run */
+			/*
+			 * Replicate the last pixel n times,
+			 * where n is the lower-order 6 bits.
+			 */
+			if (npixels & 1) {
+				op[0] |= lastpixel;
+				lastpixel = *op++; npixels++; n--;
+			} else
+				lastpixel |= lastpixel << 4;
+			npixels += n;
+			if (npixels < maxpixels) {
+				for (; n > 0; n -= 2)
+					*op++ = (tidataval_t) lastpixel;
+			}
+			if (n == -1)
+				*--op &= 0xf0;
+			lastpixel &= 0xf;
+			break;
+		case THUNDER_2BITDELTAS:	/* 2-bit deltas */
+			if ((delta = ((n >> 4) & 3)) != DELTA2_SKIP)
+				SETPIXEL(op, lastpixel + twobitdeltas[delta]);
+			if ((delta = ((n >> 2) & 3)) != DELTA2_SKIP)
+				SETPIXEL(op, lastpixel + twobitdeltas[delta]);
+			if ((delta = (n & 3)) != DELTA2_SKIP)
+				SETPIXEL(op, lastpixel + twobitdeltas[delta]);
+			break;
+		case THUNDER_3BITDELTAS:	/* 3-bit deltas */
+			if ((delta = ((n >> 3) & 7)) != DELTA3_SKIP)
+				SETPIXEL(op, lastpixel + threebitdeltas[delta]);
+			if ((delta = (n & 7)) != DELTA3_SKIP)
+				SETPIXEL(op, lastpixel + threebitdeltas[delta]);
+			break;
+		case THUNDER_RAW:		/* raw data */
+			SETPIXEL(op, n);
+			break;
+		}
+	}
+	tif->tif_rawcp = (tidata_t) bp;
+	tif->tif_rawcc = cc;
+	if (npixels != maxpixels) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		    "ThunderDecode: %s data at scanline %ld (%lu != %lu)",
+		    npixels < maxpixels ? "Not enough" : "Too much",
+		    (long) tif->tif_row, (long) npixels, (long) maxpixels);
+		return (0);
+	}
+	return (1);
+}
+
+static int
+ThunderDecodeRow(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s)
+{
+	tidata_t row = buf;
+	
+	(void) s;
+	while ((long)occ > 0) {
+		if (!ThunderDecode(tif, row, tif->tif_dir.td_imagewidth))
+			return (0);
+		occ -= tif->tif_scanlinesize;
+		row += tif->tif_scanlinesize;
+	}
+	return (1);
+}
+
+int
+TIFFInitThunderScan(TIFF* tif, int scheme)
+{
+	(void) scheme;
+	tif->tif_decoderow = ThunderDecodeRow;
+	tif->tif_decodestrip = ThunderDecodeRow;
+	return (1);
+}
+#endif /* THUNDER_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_tile.c b/src/libtiff/tif_tile.c
new file mode 100644
index 0000000..4d90e11
--- /dev/null
+++ b/src/libtiff/tif_tile.c
@@ -0,0 +1,273 @@
+/* $Id: tif_tile.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1991-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Tiled Image Support Routines.
+ */
+#include "tiffiop.h"
+
+static uint32
+summarize(TIFF* tif, size_t summand1, size_t summand2, const char* where)
+{
+	/*
+	 * XXX: We are using casting to uint32 here, because sizeof(size_t)
+	 * may be larger than sizeof(uint32) on 64-bit architectures.
+	 */
+	uint32	bytes = summand1 + summand2;
+
+	if (bytes - summand1 != summand2) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Integer overflow in %s", where);
+		bytes = 0;
+	}
+
+	return (bytes);
+}
+
+static uint32
+multiply(TIFF* tif, size_t nmemb, size_t elem_size, const char* where)
+{
+	uint32	bytes = nmemb * elem_size;
+
+	if (elem_size && bytes / elem_size != nmemb) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Integer overflow in %s", where);
+		bytes = 0;
+	}
+
+	return (bytes);
+}
+
+/*
+ * Compute which tile an (x,y,z,s) value is in.
+ */
+ttile_t
+TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, tsample_t s)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	uint32 dx = td->td_tilewidth;
+	uint32 dy = td->td_tilelength;
+	uint32 dz = td->td_tiledepth;
+	ttile_t tile = 1;
+
+	if (td->td_imagedepth == 1)
+		z = 0;
+	if (dx == (uint32) -1)
+		dx = td->td_imagewidth;
+	if (dy == (uint32) -1)
+		dy = td->td_imagelength;
+	if (dz == (uint32) -1)
+		dz = td->td_imagedepth;
+	if (dx != 0 && dy != 0 && dz != 0) {
+		uint32 xpt = TIFFhowmany(td->td_imagewidth, dx); 
+		uint32 ypt = TIFFhowmany(td->td_imagelength, dy); 
+		uint32 zpt = TIFFhowmany(td->td_imagedepth, dz); 
+
+		if (td->td_planarconfig == PLANARCONFIG_SEPARATE) 
+			tile = (xpt*ypt*zpt)*s +
+			     (xpt*ypt)*(z/dz) +
+			     xpt*(y/dy) +
+			     x/dx;
+		else
+			tile = (xpt*ypt)*(z/dz) + xpt*(y/dy) + x/dx;
+	}
+	return (tile);
+}
+
+/*
+ * Check an (x,y,z,s) coordinate
+ * against the image bounds.
+ */
+int
+TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, tsample_t s)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if (x >= td->td_imagewidth) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			     "%lu: Col out of range, max %lu",
+			     (unsigned long) x,
+			     (unsigned long) (td->td_imagewidth - 1));
+		return (0);
+	}
+	if (y >= td->td_imagelength) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			     "%lu: Row out of range, max %lu",
+			     (unsigned long) y,
+			     (unsigned long) (td->td_imagelength - 1));
+		return (0);
+	}
+	if (z >= td->td_imagedepth) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			     "%lu: Depth out of range, max %lu",
+			     (unsigned long) z,
+			     (unsigned long) (td->td_imagedepth - 1));
+		return (0);
+	}
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE &&
+	    s >= td->td_samplesperpixel) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			     "%lu: Sample out of range, max %lu",
+			     (unsigned long) s,
+			     (unsigned long) (td->td_samplesperpixel - 1));
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * Compute how many tiles are in an image.
+ */
+ttile_t
+TIFFNumberOfTiles(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	uint32 dx = td->td_tilewidth;
+	uint32 dy = td->td_tilelength;
+	uint32 dz = td->td_tiledepth;
+	ttile_t ntiles;
+
+	if (dx == (uint32) -1)
+		dx = td->td_imagewidth;
+	if (dy == (uint32) -1)
+		dy = td->td_imagelength;
+	if (dz == (uint32) -1)
+		dz = td->td_imagedepth;
+	ntiles = (dx == 0 || dy == 0 || dz == 0) ? 0 :
+	    multiply(tif, multiply(tif, TIFFhowmany(td->td_imagewidth, dx),
+				   TIFFhowmany(td->td_imagelength, dy),
+				   "TIFFNumberOfTiles"),
+		     TIFFhowmany(td->td_imagedepth, dz), "TIFFNumberOfTiles");
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+		ntiles = multiply(tif, ntiles, td->td_samplesperpixel,
+				  "TIFFNumberOfTiles");
+	return (ntiles);
+}
+
+/*
+ * Compute the # bytes in each row of a tile.
+ */
+tsize_t
+TIFFTileRowSize(TIFF* tif)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t rowsize;
+	
+	if (td->td_tilelength == 0 || td->td_tilewidth == 0)
+		return ((tsize_t) 0);
+	rowsize = multiply(tif, td->td_bitspersample, td->td_tilewidth,
+			   "TIFFTileRowSize");
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG)
+		rowsize = multiply(tif, rowsize, td->td_samplesperpixel,
+				   "TIFFTileRowSize");
+	return ((tsize_t) TIFFhowmany8(rowsize));
+}
+
+/*
+ * Compute the # bytes in a variable length, row-aligned tile.
+ */
+tsize_t
+TIFFVTileSize(TIFF* tif, uint32 nrows)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	tsize_t tilesize;
+
+	if (td->td_tilelength == 0 || td->td_tilewidth == 0 ||
+	    td->td_tiledepth == 0)
+		return ((tsize_t) 0);
+	if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
+	    td->td_photometric == PHOTOMETRIC_YCBCR &&
+	    !isUpSampled(tif)) {
+		/*
+		 * Packed YCbCr data contain one Cb+Cr for every
+		 * HorizontalSampling*VerticalSampling Y values.
+		 * Must also roundup width and height when calculating
+		 * since images that are not a multiple of the
+		 * horizontal/vertical subsampling area include
+		 * YCbCr data for the extended image.
+		 */
+		tsize_t w =
+		    TIFFroundup(td->td_tilewidth, td->td_ycbcrsubsampling[0]);
+		tsize_t rowsize =
+		    TIFFhowmany8(multiply(tif, w, td->td_bitspersample,
+					  "TIFFVTileSize"));
+		tsize_t samplingarea =
+		    td->td_ycbcrsubsampling[0]*td->td_ycbcrsubsampling[1];
+		if (samplingarea == 0) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Invalid YCbCr subsampling");
+			return 0;
+		}
+		nrows = TIFFroundup(nrows, td->td_ycbcrsubsampling[1]);
+		/* NB: don't need TIFFhowmany here 'cuz everything is rounded */
+		tilesize = multiply(tif, nrows, rowsize, "TIFFVTileSize");
+		tilesize = summarize(tif, tilesize,
+				     multiply(tif, 2, tilesize / samplingarea,
+					      "TIFFVTileSize"),
+				     "TIFFVTileSize");
+	} else
+		tilesize = multiply(tif, nrows, TIFFTileRowSize(tif),
+				    "TIFFVTileSize");
+	return ((tsize_t)
+	    multiply(tif, tilesize, td->td_tiledepth, "TIFFVTileSize"));
+}
+
+/*
+ * Compute the # bytes in a row-aligned tile.
+ */
+tsize_t
+TIFFTileSize(TIFF* tif)
+{
+	return (TIFFVTileSize(tif, tif->tif_dir.td_tilelength));
+}
+
+/*
+ * Compute a default tile size based on the image
+ * characteristics and a requested value.  If a
+ * request is <1 then we choose a size according
+ * to certain heuristics.
+ */
+void
+TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
+{
+	(*tif->tif_deftilesize)(tif, tw, th);
+}
+
+void
+_TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
+{
+	(void) tif;
+	if (*(int32*) tw < 1)
+		*tw = 256;
+	if (*(int32*) th < 1)
+		*th = 256;
+	/* roundup to a multiple of 16 per the spec */
+	if (*tw & 0xf)
+		*tw = TIFFroundup(*tw, 16);
+	if (*th & 0xf)
+		*th = TIFFroundup(*th, 16);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_version.c b/src/libtiff/tif_version.c
new file mode 100644
index 0000000..c0f25bf
--- /dev/null
+++ b/src/libtiff/tif_version.c
@@ -0,0 +1,33 @@
+/* $Header: /cvsroot/imtoolkit/im/src/libtiff/tif_version.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+/*
+ * Copyright (c) 1992-1997 Sam Leffler
+ * Copyright (c) 1992-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+#include "tiffiop.h"
+
+static const char TIFFVersion[] = TIFFLIB_VERSION_STR;
+
+const char*
+TIFFGetVersion(void)
+{
+	return (TIFFVersion);
+}
diff --git a/src/libtiff/tif_warning.c b/src/libtiff/tif_warning.c
new file mode 100644
index 0000000..cb9d53f
--- /dev/null
+++ b/src/libtiff/tif_warning.c
@@ -0,0 +1,74 @@
+/* $Header: /cvsroot/imtoolkit/im/src/libtiff/tif_warning.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ */
+#include "tiffiop.h"
+
+TIFFErrorHandlerExt _TIFFwarningHandlerExt = NULL;
+
+TIFFErrorHandler
+TIFFSetWarningHandler(TIFFErrorHandler handler)
+{
+	TIFFErrorHandler prev = _TIFFwarningHandler;
+	_TIFFwarningHandler = handler;
+	return (prev);
+}
+
+TIFFErrorHandlerExt
+TIFFSetWarningHandlerExt(TIFFErrorHandlerExt handler)
+{
+	TIFFErrorHandlerExt prev = _TIFFwarningHandlerExt;
+	_TIFFwarningHandlerExt = handler;
+	return (prev);
+}
+
+void
+TIFFWarning(const char* module, const char* fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	if (_TIFFwarningHandler)
+		(*_TIFFwarningHandler)(module, fmt, ap);
+	if (_TIFFwarningHandlerExt)
+		(*_TIFFwarningHandlerExt)(0, module, fmt, ap);
+	va_end(ap);
+}
+
+void
+TIFFWarningExt(thandle_t fd, const char* module, const char* fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	if (_TIFFwarningHandler)
+		(*_TIFFwarningHandler)(module, fmt, ap);
+	if (_TIFFwarningHandlerExt)
+		(*_TIFFwarningHandlerExt)(fd, module, fmt, ap);
+	va_end(ap);
+}
+
+
diff --git a/src/libtiff/tif_write.c b/src/libtiff/tif_write.c
new file mode 100644
index 0000000..a07606f
--- /dev/null
+++ b/src/libtiff/tif_write.c
@@ -0,0 +1,725 @@
+/* $Id: tif_write.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * TIFF Library.
+ *
+ * Scanline-oriented Write Support
+ */
+#include "tiffiop.h"
+#include <stdio.h>
+
+#define	STRIPINCR	20		/* expansion factor on strip array */
+
+#define	WRITECHECKSTRIPS(tif, module)				\
+	(((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),0,module))
+#define	WRITECHECKTILES(tif, module)				\
+	(((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),1,module))
+#define	BUFFERCHECK(tif)					\
+	((((tif)->tif_flags & TIFF_BUFFERSETUP) && tif->tif_rawdata) ||	\
+	    TIFFWriteBufferSetup((tif), NULL, (tsize_t) -1))
+
+static	int TIFFGrowStrips(TIFF*, int, const char*);
+static	int TIFFAppendToStrip(TIFF*, tstrip_t, tidata_t, tsize_t);
+
+int
+TIFFWriteScanline(TIFF* tif, tdata_t buf, uint32 row, tsample_t sample)
+{
+	static const char module[] = "TIFFWriteScanline";
+	register TIFFDirectory *td;
+	int status, imagegrew = 0;
+	tstrip_t strip;
+
+	if (!WRITECHECKSTRIPS(tif, module))
+		return (-1);
+	/*
+	 * Handle delayed allocation of data buffer.  This
+	 * permits it to be sized more intelligently (using
+	 * directory information).
+	 */
+	if (!BUFFERCHECK(tif))
+		return (-1);
+	td = &tif->tif_dir;
+	/*
+	 * Extend image length if needed
+	 * (but only for PlanarConfig=1).
+	 */
+	if (row >= td->td_imagelength) {	/* extend image */
+		if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		"Can not change \"ImageLength\" when using separate planes");
+			return (-1);
+		}
+		td->td_imagelength = row+1;
+		imagegrew = 1;
+	}
+	/*
+	 * Calculate strip and check for crossings.
+	 */
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+		if (sample >= td->td_samplesperpixel) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+			    "%d: Sample out of range, max %d",
+			    sample, td->td_samplesperpixel);
+			return (-1);
+		}
+		strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
+	} else
+		strip = row / td->td_rowsperstrip;
+	/*
+	 * Check strip array to make sure there's space. We don't support
+	 * dynamically growing files that have data organized in separate
+	 * bitplanes because it's too painful.  In that case we require that
+	 * the imagelength be set properly before the first write (so that the
+	 * strips array will be fully allocated above).
+	 */
+	if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module))
+		return (-1);
+	if (strip != tif->tif_curstrip) {
+		/*
+		 * Changing strips -- flush any data present.
+		 */
+		if (!TIFFFlushData(tif))
+			return (-1);
+		tif->tif_curstrip = strip;
+		/*
+		 * Watch out for a growing image.  The value of strips/image
+		 * will initially be 1 (since it can't be deduced until the
+		 * imagelength is known).
+		 */
+		if (strip >= td->td_stripsperimage && imagegrew)
+			td->td_stripsperimage =
+			    TIFFhowmany(td->td_imagelength,td->td_rowsperstrip);
+		tif->tif_row =
+		    (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+		if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+			if (!(*tif->tif_setupencode)(tif))
+				return (-1);
+			tif->tif_flags |= TIFF_CODERSETUP;
+		}
+        
+		tif->tif_rawcc = 0;
+		tif->tif_rawcp = tif->tif_rawdata;
+
+		if( td->td_stripbytecount[strip] > 0 )
+		{
+			/* if we are writing over existing tiles, zero length */
+			td->td_stripbytecount[strip] = 0;
+
+			/* this forces TIFFAppendToStrip() to do a seek */
+			tif->tif_curoff = 0;
+		}
+
+		if (!(*tif->tif_preencode)(tif, sample))
+			return (-1);
+		tif->tif_flags |= TIFF_POSTENCODE;
+	}
+	/*
+	 * Ensure the write is either sequential or at the
+	 * beginning of a strip (or that we can randomly
+	 * access the data -- i.e. no encoding).
+	 */
+	if (row != tif->tif_row) {
+		if (row < tif->tif_row) {
+			/*
+			 * Moving backwards within the same strip:
+			 * backup to the start and then decode
+			 * forward (below).
+			 */
+			tif->tif_row = (strip % td->td_stripsperimage) *
+			    td->td_rowsperstrip;
+			tif->tif_rawcp = tif->tif_rawdata;
+		}
+		/*
+		 * Seek forward to the desired row.
+		 */
+		if (!(*tif->tif_seek)(tif, row - tif->tif_row))
+			return (-1);
+		tif->tif_row = row;
+	}
+
+        /* swab if needed - note that source buffer will be altered */
+        tif->tif_postdecode( tif, (tidata_t) buf, tif->tif_scanlinesize );
+
+	status = (*tif->tif_encoderow)(tif, (tidata_t) buf,
+	    tif->tif_scanlinesize, sample);
+
+        /* we are now poised at the beginning of the next row */
+	tif->tif_row = row + 1;
+	return (status);
+}
+
+/*
+ * Encode the supplied data and write it to the
+ * specified strip.
+ *
+ * NB: Image length must be setup before writing.
+ */
+tsize_t
+TIFFWriteEncodedStrip(TIFF* tif, tstrip_t strip, tdata_t data, tsize_t cc)
+{
+	static const char module[] = "TIFFWriteEncodedStrip";
+	TIFFDirectory *td = &tif->tif_dir;
+	tsample_t sample;
+
+	if (!WRITECHECKSTRIPS(tif, module))
+		return ((tsize_t) -1);
+	/*
+	 * Check strip array to make sure there's space.
+	 * We don't support dynamically growing files that
+	 * have data organized in separate bitplanes because
+	 * it's too painful.  In that case we require that
+	 * the imagelength be set properly before the first
+	 * write (so that the strips array will be fully
+	 * allocated above).
+	 */
+	if (strip >= td->td_nstrips) {
+		if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		"Can not grow image by strips when using separate planes");
+			return ((tsize_t) -1);
+		}
+		if (!TIFFGrowStrips(tif, 1, module))
+			return ((tsize_t) -1);
+		td->td_stripsperimage =
+		    TIFFhowmany(td->td_imagelength, td->td_rowsperstrip);
+	}
+	/*
+	 * Handle delayed allocation of data buffer.  This
+	 * permits it to be sized according to the directory
+	 * info.
+	 */
+	if (!BUFFERCHECK(tif))
+		return ((tsize_t) -1);
+	tif->tif_curstrip = strip;
+	tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+		if (!(*tif->tif_setupencode)(tif))
+			return ((tsize_t) -1);
+		tif->tif_flags |= TIFF_CODERSETUP;
+	}
+        
+	tif->tif_rawcc = 0;
+	tif->tif_rawcp = tif->tif_rawdata;
+
+        if( td->td_stripbytecount[strip] > 0 )
+        {
+            /* if we are writing over existing tiles, zero length. */
+            td->td_stripbytecount[strip] = 0;
+
+            /* this forces TIFFAppendToStrip() to do a seek */
+            tif->tif_curoff = 0;
+        }
+        
+	tif->tif_flags &= ~TIFF_POSTENCODE;
+	sample = (tsample_t)(strip / td->td_stripsperimage);
+	if (!(*tif->tif_preencode)(tif, sample))
+		return ((tsize_t) -1);
+
+        /* swab if needed - note that source buffer will be altered */
+        tif->tif_postdecode( tif, (tidata_t) data, cc );
+
+	if (!(*tif->tif_encodestrip)(tif, (tidata_t) data, cc, sample))
+		return ((tsize_t) 0);
+	if (!(*tif->tif_postencode)(tif))
+		return ((tsize_t) -1);
+	if (!isFillOrder(tif, td->td_fillorder) &&
+	    (tif->tif_flags & TIFF_NOBITREV) == 0)
+		TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
+	if (tif->tif_rawcc > 0 &&
+	    !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
+		return ((tsize_t) -1);
+	tif->tif_rawcc = 0;
+	tif->tif_rawcp = tif->tif_rawdata;
+	return (cc);
+}
+
+/*
+ * Write the supplied data to the specified strip.
+ *
+ * NB: Image length must be setup before writing.
+ */
+tsize_t
+TIFFWriteRawStrip(TIFF* tif, tstrip_t strip, tdata_t data, tsize_t cc)
+{
+	static const char module[] = "TIFFWriteRawStrip";
+	TIFFDirectory *td = &tif->tif_dir;
+
+	if (!WRITECHECKSTRIPS(tif, module))
+		return ((tsize_t) -1);
+	/*
+	 * Check strip array to make sure there's space.
+	 * We don't support dynamically growing files that
+	 * have data organized in separate bitplanes because
+	 * it's too painful.  In that case we require that
+	 * the imagelength be set properly before the first
+	 * write (so that the strips array will be fully
+	 * allocated above).
+	 */
+	if (strip >= td->td_nstrips) {
+		if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
+			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+		"Can not grow image by strips when using separate planes");
+			return ((tsize_t) -1);
+		}
+		/*
+		 * Watch out for a growing image.  The value of
+		 * strips/image will initially be 1 (since it
+		 * can't be deduced until the imagelength is known).
+		 */
+		if (strip >= td->td_stripsperimage)
+			td->td_stripsperimage =
+			    TIFFhowmany(td->td_imagelength,td->td_rowsperstrip);
+		if (!TIFFGrowStrips(tif, 1, module))
+			return ((tsize_t) -1);
+	}
+	tif->tif_curstrip = strip;
+	tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+	return (TIFFAppendToStrip(tif, strip, (tidata_t) data, cc) ?
+	    cc : (tsize_t) -1);
+}
+
+/*
+ * Write and compress a tile of data.  The
+ * tile is selected by the (x,y,z,s) coordinates.
+ */
+tsize_t
+TIFFWriteTile(TIFF* tif,
+    tdata_t buf, uint32 x, uint32 y, uint32 z, tsample_t s)
+{
+	if (!TIFFCheckTile(tif, x, y, z, s))
+		return (-1);
+	/*
+	 * NB: A tile size of -1 is used instead of tif_tilesize knowing
+	 *     that TIFFWriteEncodedTile will clamp this to the tile size.
+	 *     This is done because the tile size may not be defined until
+	 *     after the output buffer is setup in TIFFWriteBufferSetup.
+	 */
+	return (TIFFWriteEncodedTile(tif,
+	    TIFFComputeTile(tif, x, y, z, s), buf, (tsize_t) -1));
+}
+
+/*
+ * Encode the supplied data and write it to the
+ * specified tile.  There must be space for the
+ * data.  The function clamps individual writes
+ * to a tile to the tile size, but does not (and
+ * can not) check that multiple writes to the same
+ * tile do not write more than tile size data.
+ *
+ * NB: Image length must be setup before writing; this
+ *     interface does not support automatically growing
+ *     the image on each write (as TIFFWriteScanline does).
+ */
+tsize_t
+TIFFWriteEncodedTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
+{
+	static const char module[] = "TIFFWriteEncodedTile";
+	TIFFDirectory *td;
+	tsample_t sample;
+
+	if (!WRITECHECKTILES(tif, module))
+		return ((tsize_t) -1);
+	td = &tif->tif_dir;
+	if (tile >= td->td_nstrips) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: Tile %lu out of range, max %lu",
+		    tif->tif_name, (unsigned long) tile, (unsigned long) td->td_nstrips);
+		return ((tsize_t) -1);
+	}
+	/*
+	 * Handle delayed allocation of data buffer.  This
+	 * permits it to be sized more intelligently (using
+	 * directory information).
+	 */
+	if (!BUFFERCHECK(tif))
+		return ((tsize_t) -1);
+	tif->tif_curtile = tile;
+
+	tif->tif_rawcc = 0;
+	tif->tif_rawcp = tif->tif_rawdata;
+
+        if( td->td_stripbytecount[tile] > 0 )
+        {
+            /* if we are writing over existing tiles, zero length. */
+            td->td_stripbytecount[tile] = 0;
+
+            /* this forces TIFFAppendToStrip() to do a seek */
+            tif->tif_curoff = 0;
+        }
+        
+	/* 
+	 * Compute tiles per row & per column to compute
+	 * current row and column
+	 */
+	tif->tif_row = (tile % TIFFhowmany(td->td_imagelength, td->td_tilelength))
+		* td->td_tilelength;
+	tif->tif_col = (tile % TIFFhowmany(td->td_imagewidth, td->td_tilewidth))
+		* td->td_tilewidth;
+
+	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+		if (!(*tif->tif_setupencode)(tif))
+			return ((tsize_t) -1);
+		tif->tif_flags |= TIFF_CODERSETUP;
+	}
+	tif->tif_flags &= ~TIFF_POSTENCODE;
+	sample = (tsample_t)(tile/td->td_stripsperimage);
+	if (!(*tif->tif_preencode)(tif, sample))
+		return ((tsize_t) -1);
+	/*
+	 * Clamp write amount to the tile size.  This is mostly
+	 * done so that callers can pass in some large number
+	 * (e.g. -1) and have the tile size used instead.
+	 */
+	if ( cc < 1 || cc > tif->tif_tilesize)
+		cc = tif->tif_tilesize;
+
+        /* swab if needed - note that source buffer will be altered */
+        tif->tif_postdecode( tif, (tidata_t) data, cc );
+
+	if (!(*tif->tif_encodetile)(tif, (tidata_t) data, cc, sample))
+		return ((tsize_t) 0);
+	if (!(*tif->tif_postencode)(tif))
+		return ((tsize_t) -1);
+	if (!isFillOrder(tif, td->td_fillorder) &&
+	    (tif->tif_flags & TIFF_NOBITREV) == 0)
+		TIFFReverseBits((unsigned char *)tif->tif_rawdata, tif->tif_rawcc);
+	if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
+	    tif->tif_rawdata, tif->tif_rawcc))
+		return ((tsize_t) -1);
+	tif->tif_rawcc = 0;
+	tif->tif_rawcp = tif->tif_rawdata;
+	return (cc);
+}
+
+/*
+ * Write the supplied data to the specified strip.
+ * There must be space for the data; we don't check
+ * if strips overlap!
+ *
+ * NB: Image length must be setup before writing; this
+ *     interface does not support automatically growing
+ *     the image on each write (as TIFFWriteScanline does).
+ */
+tsize_t
+TIFFWriteRawTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
+{
+	static const char module[] = "TIFFWriteRawTile";
+
+	if (!WRITECHECKTILES(tif, module))
+		return ((tsize_t) -1);
+	if (tile >= tif->tif_dir.td_nstrips) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: Tile %lu out of range, max %lu",
+		    tif->tif_name, (unsigned long) tile,
+		    (unsigned long) tif->tif_dir.td_nstrips);
+		return ((tsize_t) -1);
+	}
+	return (TIFFAppendToStrip(tif, tile, (tidata_t) data, cc) ?
+	    cc : (tsize_t) -1);
+}
+
+#define	isUnspecified(tif, f) \
+    (TIFFFieldSet(tif,f) && (tif)->tif_dir.td_imagelength == 0)
+
+int
+TIFFSetupStrips(TIFF* tif)
+{
+	TIFFDirectory* td = &tif->tif_dir;
+
+	if (isTiled(tif))
+		td->td_stripsperimage =
+		    isUnspecified(tif, FIELD_TILEDIMENSIONS) ?
+			td->td_samplesperpixel : TIFFNumberOfTiles(tif);
+	else
+		td->td_stripsperimage =
+		    isUnspecified(tif, FIELD_ROWSPERSTRIP) ?
+			td->td_samplesperpixel : TIFFNumberOfStrips(tif);
+	td->td_nstrips = td->td_stripsperimage;
+	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
+		td->td_stripsperimage /= td->td_samplesperpixel;
+	td->td_stripoffset = (uint32 *)
+	    _TIFFmalloc(td->td_nstrips * sizeof (uint32));
+	td->td_stripbytecount = (uint32 *)
+	    _TIFFmalloc(td->td_nstrips * sizeof (uint32));
+	if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL)
+		return (0);
+	/*
+	 * Place data at the end-of-file
+	 * (by setting offsets to zero).
+	 */
+	_TIFFmemset(td->td_stripoffset, 0, td->td_nstrips*sizeof (uint32));
+	_TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint32));
+	TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
+	TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
+	return (1);
+}
+#undef isUnspecified
+
+/*
+ * Verify file is writable and that the directory
+ * information is setup properly.  In doing the latter
+ * we also "freeze" the state of the directory so
+ * that important information is not changed.
+ */
+int
+TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
+{
+	if (tif->tif_mode == O_RDONLY) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: File not open for writing",
+		    tif->tif_name);
+		return (0);
+	}
+	if (tiles ^ isTiled(tif)) {
+		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, tiles ?
+		    "Can not write tiles to a stripped image" :
+		    "Can not write scanlines to a tiled image");
+		return (0);
+	}
+        
+	/*
+	 * On the first write verify all the required information
+	 * has been setup and initialize any data structures that
+	 * had to wait until directory information was set.
+	 * Note that a lot of our work is assumed to remain valid
+	 * because we disallow any of the important parameters
+	 * from changing after we start writing (i.e. once
+	 * TIFF_BEENWRITING is set, TIFFSetField will only allow
+	 * the image's length to be changed).
+	 */
+	if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+		    "%s: Must set \"ImageWidth\" before writing data",
+		    tif->tif_name);
+		return (0);
+	}
+	if (tif->tif_dir.td_samplesperpixel == 1) {
+		/* 
+		 * Planarconfiguration is irrelevant in case of single band
+		 * images and need not be included. We will set it anyway,
+		 * because this field is used in other parts of library even
+		 * in the single band case.
+		 */
+		tif->tif_dir.td_planarconfig = PLANARCONFIG_CONTIG;
+	} else {
+		if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+		    "%s: Must set \"PlanarConfiguration\" before writing data",
+			    tif->tif_name);
+			return (0);
+		}
+	}
+	if (tif->tif_dir.td_stripoffset == NULL && !TIFFSetupStrips(tif)) {
+		tif->tif_dir.td_nstrips = 0;
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: No space for %s arrays",
+		    tif->tif_name, isTiled(tif) ? "tile" : "strip");
+		return (0);
+	}
+	tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
+	tif->tif_scanlinesize = TIFFScanlineSize(tif);
+	tif->tif_flags |= TIFF_BEENWRITING;
+	return (1);
+}
+
+/*
+ * Setup the raw data buffer used for encoding.
+ */
+int
+TIFFWriteBufferSetup(TIFF* tif, tdata_t bp, tsize_t size)
+{
+	static const char module[] = "TIFFWriteBufferSetup";
+
+	if (tif->tif_rawdata) {
+		if (tif->tif_flags & TIFF_MYBUFFER) {
+			_TIFFfree(tif->tif_rawdata);
+			tif->tif_flags &= ~TIFF_MYBUFFER;
+		}
+		tif->tif_rawdata = NULL;
+	}
+	if (size == (tsize_t) -1) {
+		size = (isTiled(tif) ?
+		    tif->tif_tilesize : TIFFStripSize(tif));
+		/*
+		 * Make raw data buffer at least 8K
+		 */
+		if (size < 8*1024)
+			size = 8*1024;
+		bp = NULL;			/* NB: force malloc */
+	}
+	if (bp == NULL) {
+		bp = _TIFFmalloc(size);
+		if (bp == NULL) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: No space for output buffer",
+			    tif->tif_name);
+			return (0);
+		}
+		tif->tif_flags |= TIFF_MYBUFFER;
+	} else
+		tif->tif_flags &= ~TIFF_MYBUFFER;
+	tif->tif_rawdata = (tidata_t) bp;
+	tif->tif_rawdatasize = size;
+	tif->tif_rawcc = 0;
+	tif->tif_rawcp = tif->tif_rawdata;
+	tif->tif_flags |= TIFF_BUFFERSETUP;
+	return (1);
+}
+
+/*
+ * Grow the strip data structures by delta strips.
+ */
+static int
+TIFFGrowStrips(TIFF* tif, int delta, const char* module)
+{
+	TIFFDirectory	*td = &tif->tif_dir;
+	uint32		*new_stripoffset, *new_stripbytecount;
+
+	assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
+	new_stripoffset = (uint32*)_TIFFrealloc(td->td_stripoffset,
+		(td->td_nstrips + delta) * sizeof (uint32));
+	new_stripbytecount = (uint32*)_TIFFrealloc(td->td_stripbytecount,
+		(td->td_nstrips + delta) * sizeof (uint32));
+	if (new_stripoffset == NULL || new_stripbytecount == NULL) {
+		if (new_stripoffset)
+			_TIFFfree(new_stripoffset);
+		if (new_stripbytecount)
+			_TIFFfree(new_stripbytecount);
+		td->td_nstrips = 0;
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: No space to expand strip arrays",
+			  tif->tif_name);
+		return (0);
+	}
+	td->td_stripoffset = new_stripoffset;
+	td->td_stripbytecount = new_stripbytecount;
+	_TIFFmemset(td->td_stripoffset + td->td_nstrips,
+		    0, delta*sizeof (uint32));
+	_TIFFmemset(td->td_stripbytecount + td->td_nstrips,
+		    0, delta*sizeof (uint32));
+	td->td_nstrips += delta;
+	return (1);
+}
+
+/*
+ * Append the data to the specified strip.
+ */
+static int
+TIFFAppendToStrip(TIFF* tif, tstrip_t strip, tidata_t data, tsize_t cc)
+{
+	TIFFDirectory *td = &tif->tif_dir;
+	static const char module[] = "TIFFAppendToStrip";
+
+	if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
+		/*
+		 * No current offset, set the current strip.
+		 */
+		assert(td->td_nstrips > 0);
+		if (td->td_stripoffset[strip] != 0) {
+			/*
+			 * Prevent overlapping of the data chunks. We need
+                         * this to enable in place updating of the compressed
+                         * images. Larger blocks will be moved at the end of
+                         * the file without any optimization of the spare
+                         * space, so such scheme is not too much effective.
+			 */
+			if (td->td_stripbytecountsorted) {
+				if (strip == td->td_nstrips - 1
+				    || td->td_stripoffset[strip + 1] <
+					td->td_stripoffset[strip] + cc) {
+					td->td_stripoffset[strip] =
+						TIFFSeekFile(tif, (toff_t)0,
+							     SEEK_END);
+				}
+			} else {
+				tstrip_t i;
+				for (i = 0; i < td->td_nstrips; i++) {
+					if (td->td_stripoffset[i] > 
+						td->td_stripoffset[strip]
+					    && td->td_stripoffset[i] <
+						td->td_stripoffset[strip] + cc) {
+						td->td_stripoffset[strip] =
+							TIFFSeekFile(tif,
+								     (toff_t)0,
+								     SEEK_END);
+					}
+				}
+			}
+
+			if (!SeekOK(tif, td->td_stripoffset[strip])) {
+				TIFFErrorExt(tif->tif_clientdata, module,
+					  "%s: Seek error at scanline %lu",
+					  tif->tif_name,
+					  (unsigned long)tif->tif_row);
+				return (0);
+			}
+		} else
+			td->td_stripoffset[strip] =
+			    TIFFSeekFile(tif, (toff_t) 0, SEEK_END);
+		tif->tif_curoff = td->td_stripoffset[strip];
+	}
+
+	if (!WriteOK(tif, data, cc)) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: Write error at scanline %lu",
+		    tif->tif_name, (unsigned long) tif->tif_row);
+		return (0);
+	}
+	tif->tif_curoff += cc;
+	td->td_stripbytecount[strip] += cc;
+	return (1);
+}
+
+/*
+ * Internal version of TIFFFlushData that can be
+ * called by ``encodestrip routines'' w/o concern
+ * for infinite recursion.
+ */
+int
+TIFFFlushData1(TIFF* tif)
+{
+	if (tif->tif_rawcc > 0) {
+		if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
+		    (tif->tif_flags & TIFF_NOBITREV) == 0)
+			TIFFReverseBits((unsigned char *)tif->tif_rawdata,
+			    tif->tif_rawcc);
+		if (!TIFFAppendToStrip(tif,
+		    isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip,
+		    tif->tif_rawdata, tif->tif_rawcc))
+			return (0);
+		tif->tif_rawcc = 0;
+		tif->tif_rawcp = tif->tif_rawdata;
+	}
+	return (1);
+}
+
+/*
+ * Set the current write offset.  This should only be
+ * used to set the offset to a known previous location
+ * (very carefully), or to 0 so that the next write gets
+ * appended to the end of the file.
+ */
+void
+TIFFSetWriteOffset(TIFF* tif, toff_t off)
+{
+	tif->tif_curoff = off;
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tif_zip.c b/src/libtiff/tif_zip.c
new file mode 100644
index 0000000..41781f8
--- /dev/null
+++ b/src/libtiff/tif_zip.c
@@ -0,0 +1,378 @@
+/* $Id: tif_zip.c,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1995-1997 Sam Leffler
+ * Copyright (c) 1995-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#include "tiffiop.h"
+#ifdef ZIP_SUPPORT
+/*
+ * TIFF Library.
+ *
+ * ZIP (aka Deflate) Compression Support
+ *
+ * This file is simply an interface to the zlib library written by
+ * Jean-loup Gailly and Mark Adler.  You must use version 1.0 or later
+ * of the library: this code assumes the 1.0 API and also depends on
+ * the ability to write the zlib header multiple times (one per strip)
+ * which was not possible with versions prior to 0.95.  Note also that
+ * older versions of this codec avoided this bug by supressing the header
+ * entirely.  This means that files written with the old library cannot
+ * be read; they should be converted to a different compression scheme
+ * and then reconverted.
+ *
+ * The data format used by the zlib library is described in the files
+ * zlib-3.1.doc, deflate-1.1.doc and gzip-4.1.doc, available in the
+ * directory ftp://ftp.uu.net/pub/archiving/zip/doc.  The library was
+ * last found at ftp://ftp.uu.net/pub/archiving/zip/zlib/zlib-0.99.tar.gz.
+ */
+#include "tif_predict.h"
+#include "zlib.h"
+
+#include <stdio.h>
+
+/*
+ * Sigh, ZLIB_VERSION is defined as a string so there's no
+ * way to do a proper check here.  Instead we guess based
+ * on the presence of #defines that were added between the
+ * 0.95 and 1.0 distributions.
+ */
+#if !defined(Z_NO_COMPRESSION) || !defined(Z_DEFLATED)
+#error "Antiquated ZLIB software; you must use version 1.0 or later"
+#endif
+
+/*
+ * State block for each open TIFF
+ * file using ZIP compression/decompression.
+ */
+typedef	struct {
+	TIFFPredictorState predict;
+	z_stream	stream;
+	int		zipquality;		/* compression level */
+	int		state;			/* state flags */
+#define	ZSTATE_INIT	0x1		/* zlib setup successfully */
+
+	TIFFVGetMethod	vgetparent;		/* super-class method */
+	TIFFVSetMethod	vsetparent;		/* super-class method */
+} ZIPState;
+
+#define	ZState(tif)		((ZIPState*) (tif)->tif_data)
+#define	DecoderState(tif)	ZState(tif)
+#define	EncoderState(tif)	ZState(tif)
+
+static	int ZIPEncode(TIFF*, tidata_t, tsize_t, tsample_t);
+static	int ZIPDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+
+static int
+ZIPSetupDecode(TIFF* tif)
+{
+	ZIPState* sp = DecoderState(tif);
+	static const char module[] = "ZIPSetupDecode";
+
+	assert(sp != NULL);
+	if (inflateInit(&sp->stream) != Z_OK) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: %s", tif->tif_name, sp->stream.msg);
+		return (0);
+	} else {
+		sp->state |= ZSTATE_INIT;
+		return (1);
+	}
+}
+
+/*
+ * Setup state for decoding a strip.
+ */
+static int
+ZIPPreDecode(TIFF* tif, tsample_t s)
+{
+	ZIPState* sp = DecoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	sp->stream.next_in = tif->tif_rawdata;
+	sp->stream.avail_in = tif->tif_rawcc;
+	return (inflateReset(&sp->stream) == Z_OK);
+}
+
+static int
+ZIPDecode(TIFF* tif, tidata_t op, tsize_t occ, tsample_t s)
+{
+	ZIPState* sp = DecoderState(tif);
+	static const char module[] = "ZIPDecode";
+
+	(void) s;
+	assert(sp != NULL);
+	sp->stream.next_out = op;
+	sp->stream.avail_out = occ;
+	do {
+		int state = inflate(&sp->stream, Z_PARTIAL_FLUSH);
+		if (state == Z_STREAM_END)
+			break;
+		if (state == Z_DATA_ERROR) {
+			TIFFErrorExt(tif->tif_clientdata, module,
+			    "%s: Decoding error at scanline %d, %s",
+			    tif->tif_name, tif->tif_row, sp->stream.msg);
+			if (inflateSync(&sp->stream) != Z_OK)
+				return (0);
+			continue;
+		}
+		if (state != Z_OK) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
+			    tif->tif_name, sp->stream.msg);
+			return (0);
+		}
+	} while (sp->stream.avail_out > 0);
+	if (sp->stream.avail_out != 0) {
+		TIFFErrorExt(tif->tif_clientdata, module,
+		    "%s: Not enough data at scanline %d (short %d bytes)",
+		    tif->tif_name, tif->tif_row, sp->stream.avail_out);
+		return (0);
+	}
+	return (1);
+}
+
+static int
+ZIPSetupEncode(TIFF* tif)
+{
+	ZIPState* sp = EncoderState(tif);
+	static const char module[] = "ZIPSetupEncode";
+
+	assert(sp != NULL);
+	if (deflateInit(&sp->stream, sp->zipquality) != Z_OK) {
+		TIFFErrorExt(tif->tif_clientdata, module, "%s: %s", tif->tif_name, sp->stream.msg);
+		return (0);
+	} else {
+		sp->state |= ZSTATE_INIT;
+		return (1);
+	}
+}
+
+/*
+ * Reset encoding state at the start of a strip.
+ */
+static int
+ZIPPreEncode(TIFF* tif, tsample_t s)
+{
+	ZIPState *sp = EncoderState(tif);
+
+	(void) s;
+	assert(sp != NULL);
+	sp->stream.next_out = tif->tif_rawdata;
+	sp->stream.avail_out = tif->tif_rawdatasize;
+	return (deflateReset(&sp->stream) == Z_OK);
+}
+
+/*
+ * Encode a chunk of pixels.
+ */
+static int
+ZIPEncode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+{
+	ZIPState *sp = EncoderState(tif);
+	static const char module[] = "ZIPEncode";
+
+	(void) s;
+	sp->stream.next_in = bp;
+	sp->stream.avail_in = cc;
+	do {
+		if (deflate(&sp->stream, Z_NO_FLUSH) != Z_OK) {
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: Encoder error: %s",
+			    tif->tif_name, sp->stream.msg);
+			return (0);
+		}
+		if (sp->stream.avail_out == 0) {
+			tif->tif_rawcc = tif->tif_rawdatasize;
+			TIFFFlushData1(tif);
+			sp->stream.next_out = tif->tif_rawdata;
+			sp->stream.avail_out = tif->tif_rawdatasize;
+		}
+	} while (sp->stream.avail_in > 0);
+	return (1);
+}
+
+/*
+ * Finish off an encoded strip by flushing the last
+ * string and tacking on an End Of Information code.
+ */
+static int
+ZIPPostEncode(TIFF* tif)
+{
+	ZIPState *sp = EncoderState(tif);
+	static const char module[] = "ZIPPostEncode";
+	int state;
+
+	sp->stream.avail_in = 0;
+	do {
+		state = deflate(&sp->stream, Z_FINISH);
+		switch (state) {
+		case Z_STREAM_END:
+		case Z_OK:
+		    if ((int)sp->stream.avail_out != (int)tif->tif_rawdatasize)
+                    {
+			    tif->tif_rawcc =
+				tif->tif_rawdatasize - sp->stream.avail_out;
+			    TIFFFlushData1(tif);
+			    sp->stream.next_out = tif->tif_rawdata;
+			    sp->stream.avail_out = tif->tif_rawdatasize;
+		    }
+		    break;
+		default:
+			TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
+			tif->tif_name, sp->stream.msg);
+		    return (0);
+		}
+	} while (state != Z_STREAM_END);
+	return (1);
+}
+
+static void
+ZIPCleanup(TIFF* tif)
+{
+	ZIPState* sp = ZState(tif);
+
+	assert(sp != 0);
+
+	(void)TIFFPredictorCleanup(tif);
+
+	tif->tif_tagmethods.vgetfield = sp->vgetparent;
+	tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+	if (sp->state&ZSTATE_INIT) {
+		/* NB: avoid problems in the library */
+		if (tif->tif_mode == O_RDONLY)
+			inflateEnd(&sp->stream);
+		else
+			deflateEnd(&sp->stream);
+	}
+	_TIFFfree(sp);
+	tif->tif_data = NULL;
+
+	_TIFFSetDefaultCompressionState(tif);
+}
+
+static int
+ZIPVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	ZIPState* sp = ZState(tif);
+	static const char module[] = "ZIPVSetField";
+
+	switch (tag) {
+	case TIFFTAG_ZIPQUALITY:
+		sp->zipquality = va_arg(ap, int);
+		if (tif->tif_mode != O_RDONLY && (sp->state&ZSTATE_INIT)) {
+			if (deflateParams(&sp->stream,
+			    sp->zipquality, Z_DEFAULT_STRATEGY) != Z_OK) {
+				TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
+				    tif->tif_name, sp->stream.msg);
+				return (0);
+			}
+		}
+		return (1);
+	default:
+		return (*sp->vsetparent)(tif, tag, ap);
+	}
+	/*NOTREACHED*/
+}
+
+static int
+ZIPVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+	ZIPState* sp = ZState(tif);
+
+	switch (tag) {
+	case TIFFTAG_ZIPQUALITY:
+		*va_arg(ap, int*) = sp->zipquality;
+		break;
+	default:
+		return (*sp->vgetparent)(tif, tag, ap);
+	}
+	return (1);
+}
+
+static const TIFFFieldInfo zipFieldInfo[] = {
+    { TIFFTAG_ZIPQUALITY,	 0, 0,	TIFF_ANY,	FIELD_PSEUDO,
+      TRUE,	FALSE,	"" },
+};
+
+int
+TIFFInitZIP(TIFF* tif, int scheme)
+{
+	ZIPState* sp;
+
+	assert( (scheme == COMPRESSION_DEFLATE)
+		|| (scheme == COMPRESSION_ADOBE_DEFLATE));
+
+	/*
+	 * Allocate state block so tag methods have storage to record values.
+	 */
+	tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (ZIPState));
+	if (tif->tif_data == NULL)
+		goto bad;
+	sp = ZState(tif);
+	sp->stream.zalloc = NULL;
+	sp->stream.zfree = NULL;
+	sp->stream.opaque = NULL;
+	sp->stream.data_type = Z_BINARY;
+
+	/*
+	 * Merge codec-specific tag information and
+	 * override parent get/set field methods.
+	 */
+	_TIFFMergeFieldInfo(tif, zipFieldInfo, TIFFArrayCount(zipFieldInfo));
+	sp->vgetparent = tif->tif_tagmethods.vgetfield;
+	tif->tif_tagmethods.vgetfield = ZIPVGetField; /* hook for codec tags */
+	sp->vsetparent = tif->tif_tagmethods.vsetfield;
+	tif->tif_tagmethods.vsetfield = ZIPVSetField; /* hook for codec tags */
+
+	/* Default values for codec-specific fields */
+	sp->zipquality = Z_DEFAULT_COMPRESSION;	/* default comp. level */
+	sp->state = 0;
+
+	/*
+	 * Install codec methods.
+	 */
+	tif->tif_setupdecode = ZIPSetupDecode;
+	tif->tif_predecode = ZIPPreDecode;
+	tif->tif_decoderow = ZIPDecode;
+	tif->tif_decodestrip = ZIPDecode;
+	tif->tif_decodetile = ZIPDecode;
+	tif->tif_setupencode = ZIPSetupEncode;
+	tif->tif_preencode = ZIPPreEncode;
+	tif->tif_postencode = ZIPPostEncode;
+	tif->tif_encoderow = ZIPEncode;
+	tif->tif_encodestrip = ZIPEncode;
+	tif->tif_encodetile = ZIPEncode;
+	tif->tif_cleanup = ZIPCleanup;
+	/*
+	 * Setup predictor setup.
+	 */
+	(void) TIFFPredictorInit(tif);
+	return (1);
+bad:
+	TIFFErrorExt(tif->tif_clientdata, "TIFFInitZIP",
+		     "No space for ZIP state block");
+	return (0);
+}
+#endif /* ZIP_SUPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tiff.h b/src/libtiff/tiff.h
new file mode 100644
index 0000000..0697268
--- /dev/null
+++ b/src/libtiff/tiff.h
@@ -0,0 +1,647 @@
+/* $Id: tiff.h,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFF_
+#define	_TIFF_
+
+#include "tif_config.h"  /* IMLIB */
+
+/*
+ * Tag Image File Format (TIFF)
+ *
+ * Based on Rev 6.0 from:
+ *    Developer's Desk
+ *    Aldus Corporation
+ *    411 First Ave. South
+ *    Suite 200
+ *    Seattle, WA  98104
+ *    206-622-5500
+ *    
+ *    (http://partners.adobe.com/asn/developer/PDFS/TN/TIFF6.pdf)
+ *
+ * For Big TIFF design notes see the following link
+ *    http://gdal.maptools.org/twiki/bin/view/libtiff/BigTIFFDesign
+ */
+#define	TIFF_VERSION	        42
+#define TIFF_BIGTIFF_VERSION    43
+
+#define	TIFF_BIGENDIAN		0x4d4d
+#define	TIFF_LITTLEENDIAN	0x4949
+#define	MDI_LITTLEENDIAN        0x5045
+#define	MDI_BIGENDIAN           0x4550
+/*
+ * Intrinsic data types required by the file format:
+ *
+ * 8-bit quantities	int8/uint8
+ * 16-bit quantities	int16/uint16
+ * 32-bit quantities	int32/uint32
+ * strings		unsigned char*
+ */
+
+#ifndef HAVE_INT8
+typedef	signed char int8;	/* NB: non-ANSI compilers may not grok */
+#endif
+typedef	unsigned char uint8;
+#ifndef HAVE_INT16
+typedef	short int16;
+#endif
+typedef	unsigned short uint16;	/* sizeof (uint16) must == 2 */
+#if SIZEOF_INT == 4
+#ifndef HAVE_INT32
+typedef	int int32;
+#endif
+typedef	unsigned int uint32;	/* sizeof (uint32) must == 4 */
+#elif SIZEOF_LONG == 4
+#ifndef HAVE_INT32
+typedef	long int32;
+#endif
+typedef	unsigned long uint32;	/* sizeof (uint32) must == 4 */
+#endif
+
+/* For TIFFReassignTagToIgnore */
+enum TIFFIgnoreSense /* IGNORE tag table */
+{
+	TIS_STORE,
+	TIS_EXTRACT,
+	TIS_EMPTY
+};
+
+/*
+ * TIFF header.
+ */
+typedef	struct {
+	uint16	tiff_magic;	/* magic number (defines byte order) */
+#define TIFF_MAGIC_SIZE		2
+	uint16	tiff_version;	/* TIFF version number */
+#define TIFF_VERSION_SIZE	2
+	uint32	tiff_diroff;	/* byte offset to first directory */
+#define TIFF_DIROFFSET_SIZE	4
+} TIFFHeader;
+
+
+/*
+ * TIFF Image File Directories are comprised of a table of field
+ * descriptors of the form shown below.  The table is sorted in
+ * ascending order by tag.  The values associated with each entry are
+ * disjoint and may appear anywhere in the file (so long as they are
+ * placed on a word boundary).
+ *
+ * If the value is 4 bytes or less, then it is placed in the offset
+ * field to save space.  If the value is less than 4 bytes, it is
+ * left-justified in the offset field.
+ */
+typedef	struct {
+	uint16		tdir_tag;	/* see below */
+	uint16		tdir_type;	/* data type; see below */
+	uint32		tdir_count;	/* number of items; length in spec */
+	uint32		tdir_offset;	/* byte offset to field data */
+} TIFFDirEntry;
+
+/*
+ * NB: In the comments below,
+ *  - items marked with a + are obsoleted by revision 5.0,
+ *  - items marked with a ! are introduced in revision 6.0.
+ *  - items marked with a % are introduced post revision 6.0.
+ *  - items marked with a $ are obsoleted by revision 6.0.
+ *  - items marked with a & are introduced by Adobe DNG specification.
+ */
+
+/*
+ * Tag data type information.
+ *
+ * Note: RATIONALs are the ratio of two 32-bit integer values.
+ */
+typedef	enum {
+	TIFF_NOTYPE	= 0,	/* placeholder */
+	TIFF_BYTE	= 1,	/* 8-bit unsigned integer */
+	TIFF_ASCII	= 2,	/* 8-bit bytes w/ last byte null */
+	TIFF_SHORT	= 3,	/* 16-bit unsigned integer */
+	TIFF_LONG	= 4,	/* 32-bit unsigned integer */
+	TIFF_RATIONAL	= 5,	/* 64-bit unsigned fraction */
+	TIFF_SBYTE	= 6,	/* !8-bit signed integer */
+	TIFF_UNDEFINED	= 7,	/* !8-bit untyped data */
+	TIFF_SSHORT	= 8,	/* !16-bit signed integer */
+	TIFF_SLONG	= 9,	/* !32-bit signed integer */
+	TIFF_SRATIONAL	= 10,	/* !64-bit signed fraction */
+	TIFF_FLOAT	= 11,	/* !32-bit IEEE floating point */
+	TIFF_DOUBLE	= 12,	/* !64-bit IEEE floating point */
+	TIFF_IFD	= 13	/* %32-bit unsigned integer (offset) */
+} TIFFDataType;
+
+/*
+ * TIFF Tag Definitions.
+ */
+#define	TIFFTAG_SUBFILETYPE		254	/* subfile data descriptor */
+#define	    FILETYPE_REDUCEDIMAGE	0x1	/* reduced resolution version */
+#define	    FILETYPE_PAGE		0x2	/* one page of many */
+#define	    FILETYPE_MASK		0x4	/* transparency mask */
+#define	TIFFTAG_OSUBFILETYPE		255	/* +kind of data in subfile */
+#define	    OFILETYPE_IMAGE		1	/* full resolution image data */
+#define	    OFILETYPE_REDUCEDIMAGE	2	/* reduced size image data */
+#define	    OFILETYPE_PAGE		3	/* one page of many */
+#define	TIFFTAG_IMAGEWIDTH		256	/* image width in pixels */
+#define	TIFFTAG_IMAGELENGTH		257	/* image height in pixels */
+#define	TIFFTAG_BITSPERSAMPLE		258	/* bits per channel (sample) */
+#define	TIFFTAG_COMPRESSION		259	/* data compression technique */
+#define	    COMPRESSION_NONE		1	/* dump mode */
+#define	    COMPRESSION_CCITTRLE	2	/* CCITT modified Huffman RLE */
+#define	    COMPRESSION_CCITTFAX3	3	/* CCITT Group 3 fax encoding */
+#define     COMPRESSION_CCITT_T4        3       /* CCITT T.4 (TIFF 6 name) */
+#define	    COMPRESSION_CCITTFAX4	4	/* CCITT Group 4 fax encoding */
+#define     COMPRESSION_CCITT_T6        4       /* CCITT T.6 (TIFF 6 name) */
+#define	    COMPRESSION_LZW		5       /* Lempel-Ziv  & Welch */
+#define	    COMPRESSION_OJPEG		6	/* !6.0 JPEG */
+#define	    COMPRESSION_JPEG		7	/* %JPEG DCT compression */
+#define	    COMPRESSION_NEXT		32766	/* NeXT 2-bit RLE */
+#define	    COMPRESSION_CCITTRLEW	32771	/* #1 w/ word alignment */
+#define	    COMPRESSION_PACKBITS	32773	/* Macintosh RLE */
+#define	    COMPRESSION_THUNDERSCAN	32809	/* ThunderScan RLE */
+/* codes 32895-32898 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */
+#define	    COMPRESSION_IT8CTPAD	32895   /* IT8 CT w/padding */
+#define	    COMPRESSION_IT8LW		32896   /* IT8 Linework RLE */
+#define	    COMPRESSION_IT8MP		32897   /* IT8 Monochrome picture */
+#define	    COMPRESSION_IT8BL		32898   /* IT8 Binary line art */
+/* compression codes 32908-32911 are reserved for Pixar */
+#define     COMPRESSION_PIXARFILM	32908   /* Pixar companded 10bit LZW */
+#define	    COMPRESSION_PIXARLOG	32909   /* Pixar companded 11bit ZIP */
+#define	    COMPRESSION_DEFLATE		32946	/* Deflate compression */
+#define     COMPRESSION_ADOBE_DEFLATE   8       /* Deflate compression,
+						   as recognized by Adobe */
+/* compression code 32947 is reserved for Oceana Matrix <dev@oceana.com> */
+#define     COMPRESSION_DCS             32947   /* Kodak DCS encoding */
+#define	    COMPRESSION_JBIG		34661	/* ISO JBIG */
+#define     COMPRESSION_SGILOG		34676	/* SGI Log Luminance RLE */
+#define     COMPRESSION_SGILOG24	34677	/* SGI Log 24-bit packed */
+#define     COMPRESSION_JP2000          34712   /* Leadtools JPEG2000 */
+#define	TIFFTAG_PHOTOMETRIC		262	/* photometric interpretation */
+#define	    PHOTOMETRIC_MINISWHITE	0	/* min value is white */
+#define	    PHOTOMETRIC_MINISBLACK	1	/* min value is black */
+#define	    PHOTOMETRIC_RGB		2	/* RGB color model */
+#define	    PHOTOMETRIC_PALETTE		3	/* color map indexed */
+#define	    PHOTOMETRIC_MASK		4	/* $holdout mask */
+#define	    PHOTOMETRIC_SEPARATED	5	/* !color separations */
+#define	    PHOTOMETRIC_YCBCR		6	/* !CCIR 601 */
+#define	    PHOTOMETRIC_CIELAB		8	/* !1976 CIE L*a*b* */
+#define	    PHOTOMETRIC_ICCLAB		9	/* ICC L*a*b* [Adobe TIFF Technote 4] */
+#define	    PHOTOMETRIC_ITULAB		10	/* ITU L*a*b* */
+#define     PHOTOMETRIC_LOGL		32844	/* CIE Log2(L) */
+#define     PHOTOMETRIC_LOGLUV		32845	/* CIE Log2(L) (u',v') */
+#define	TIFFTAG_THRESHHOLDING		263	/* +thresholding used on data */
+#define	    THRESHHOLD_BILEVEL		1	/* b&w art scan */
+#define	    THRESHHOLD_HALFTONE		2	/* or dithered scan */
+#define	    THRESHHOLD_ERRORDIFFUSE	3	/* usually floyd-steinberg */
+#define	TIFFTAG_CELLWIDTH		264	/* +dithering matrix width */
+#define	TIFFTAG_CELLLENGTH		265	/* +dithering matrix height */
+#define	TIFFTAG_FILLORDER		266	/* data order within a byte */
+#define	    FILLORDER_MSB2LSB		1	/* most significant -> least */
+#define	    FILLORDER_LSB2MSB		2	/* least significant -> most */
+#define	TIFFTAG_DOCUMENTNAME		269	/* name of doc. image is from */
+#define	TIFFTAG_IMAGEDESCRIPTION	270	/* info about image */
+#define	TIFFTAG_MAKE			271	/* scanner manufacturer name */
+#define	TIFFTAG_MODEL			272	/* scanner model name/number */
+#define	TIFFTAG_STRIPOFFSETS		273	/* offsets to data strips */
+#define	TIFFTAG_ORIENTATION		274	/* +image orientation */
+#define	    ORIENTATION_TOPLEFT		1	/* row 0 top, col 0 lhs */
+#define	    ORIENTATION_TOPRIGHT	2	/* row 0 top, col 0 rhs */
+#define	    ORIENTATION_BOTRIGHT	3	/* row 0 bottom, col 0 rhs */
+#define	    ORIENTATION_BOTLEFT		4	/* row 0 bottom, col 0 lhs */
+#define	    ORIENTATION_LEFTTOP		5	/* row 0 lhs, col 0 top */
+#define	    ORIENTATION_RIGHTTOP	6	/* row 0 rhs, col 0 top */
+#define	    ORIENTATION_RIGHTBOT	7	/* row 0 rhs, col 0 bottom */
+#define	    ORIENTATION_LEFTBOT		8	/* row 0 lhs, col 0 bottom */
+#define	TIFFTAG_SAMPLESPERPIXEL		277	/* samples per pixel */
+#define	TIFFTAG_ROWSPERSTRIP		278	/* rows per strip of data */
+#define	TIFFTAG_STRIPBYTECOUNTS		279	/* bytes counts for strips */
+#define	TIFFTAG_MINSAMPLEVALUE		280	/* +minimum sample value */
+#define	TIFFTAG_MAXSAMPLEVALUE		281	/* +maximum sample value */
+#define	TIFFTAG_XRESOLUTION		282	/* pixels/resolution in x */
+#define	TIFFTAG_YRESOLUTION		283	/* pixels/resolution in y */
+#define	TIFFTAG_PLANARCONFIG		284	/* storage organization */
+#define	    PLANARCONFIG_CONTIG		1	/* single image plane */
+#define	    PLANARCONFIG_SEPARATE	2	/* separate planes of data */
+#define	TIFFTAG_PAGENAME		285	/* page name image is from */
+#define	TIFFTAG_XPOSITION		286	/* x page offset of image lhs */
+#define	TIFFTAG_YPOSITION		287	/* y page offset of image lhs */
+#define	TIFFTAG_FREEOFFSETS		288	/* +byte offset to free block */
+#define	TIFFTAG_FREEBYTECOUNTS		289	/* +sizes of free blocks */
+#define	TIFFTAG_GRAYRESPONSEUNIT	290	/* $gray scale curve accuracy */
+#define	    GRAYRESPONSEUNIT_10S	1	/* tenths of a unit */
+#define	    GRAYRESPONSEUNIT_100S	2	/* hundredths of a unit */
+#define	    GRAYRESPONSEUNIT_1000S	3	/* thousandths of a unit */
+#define	    GRAYRESPONSEUNIT_10000S	4	/* ten-thousandths of a unit */
+#define	    GRAYRESPONSEUNIT_100000S	5	/* hundred-thousandths */
+#define	TIFFTAG_GRAYRESPONSECURVE	291	/* $gray scale response curve */
+#define	TIFFTAG_GROUP3OPTIONS		292	/* 32 flag bits */
+#define	TIFFTAG_T4OPTIONS		292	/* TIFF 6.0 proper name alias */
+#define	    GROUP3OPT_2DENCODING	0x1	/* 2-dimensional coding */
+#define	    GROUP3OPT_UNCOMPRESSED	0x2	/* data not compressed */
+#define	    GROUP3OPT_FILLBITS		0x4	/* fill to byte boundary */
+#define	TIFFTAG_GROUP4OPTIONS		293	/* 32 flag bits */
+#define TIFFTAG_T6OPTIONS               293     /* TIFF 6.0 proper name */
+#define	    GROUP4OPT_UNCOMPRESSED	0x2	/* data not compressed */
+#define	TIFFTAG_RESOLUTIONUNIT		296	/* units of resolutions */
+#define	    RESUNIT_NONE		1	/* no meaningful units */
+#define	    RESUNIT_INCH		2	/* english */
+#define	    RESUNIT_CENTIMETER		3	/* metric */
+#define	TIFFTAG_PAGENUMBER		297	/* page numbers of multi-page */
+#define	TIFFTAG_COLORRESPONSEUNIT	300	/* $color curve accuracy */
+#define	    COLORRESPONSEUNIT_10S	1	/* tenths of a unit */
+#define	    COLORRESPONSEUNIT_100S	2	/* hundredths of a unit */
+#define	    COLORRESPONSEUNIT_1000S	3	/* thousandths of a unit */
+#define	    COLORRESPONSEUNIT_10000S	4	/* ten-thousandths of a unit */
+#define	    COLORRESPONSEUNIT_100000S	5	/* hundred-thousandths */
+#define	TIFFTAG_TRANSFERFUNCTION	301	/* !colorimetry info */
+#define	TIFFTAG_SOFTWARE		305	/* name & release */
+#define	TIFFTAG_DATETIME		306	/* creation date and time */
+#define	TIFFTAG_ARTIST			315	/* creator of image */
+#define	TIFFTAG_HOSTCOMPUTER		316	/* machine where created */
+#define	TIFFTAG_PREDICTOR		317	/* prediction scheme w/ LZW */
+#define     PREDICTOR_NONE		1	/* no prediction scheme used */
+#define     PREDICTOR_HORIZONTAL	2	/* horizontal differencing */
+#define     PREDICTOR_FLOATINGPOINT	3	/* floating point predictor */
+#define	TIFFTAG_WHITEPOINT		318	/* image white point */
+#define	TIFFTAG_PRIMARYCHROMATICITIES	319	/* !primary chromaticities */
+#define	TIFFTAG_COLORMAP		320	/* RGB map for pallette image */
+#define	TIFFTAG_HALFTONEHINTS		321	/* !highlight+shadow info */
+#define	TIFFTAG_TILEWIDTH		322	/* !tile width in pixels */
+#define	TIFFTAG_TILELENGTH		323	/* !tile height in pixels */
+#define TIFFTAG_TILEOFFSETS		324	/* !offsets to data tiles */
+#define TIFFTAG_TILEBYTECOUNTS		325	/* !byte counts for tiles */
+#define	TIFFTAG_BADFAXLINES		326	/* lines w/ wrong pixel count */
+#define	TIFFTAG_CLEANFAXDATA		327	/* regenerated line info */
+#define	    CLEANFAXDATA_CLEAN		0	/* no errors detected */
+#define	    CLEANFAXDATA_REGENERATED	1	/* receiver regenerated lines */
+#define	    CLEANFAXDATA_UNCLEAN	2	/* uncorrected errors exist */
+#define	TIFFTAG_CONSECUTIVEBADFAXLINES	328	/* max consecutive bad lines */
+#define	TIFFTAG_SUBIFD			330	/* subimage descriptors */
+#define	TIFFTAG_INKSET			332	/* !inks in separated image */
+#define	    INKSET_CMYK			1	/* !cyan-magenta-yellow-black color */
+#define	    INKSET_MULTIINK		2	/* !multi-ink or hi-fi color */
+#define	TIFFTAG_INKNAMES		333	/* !ascii names of inks */
+#define	TIFFTAG_NUMBEROFINKS		334	/* !number of inks */
+#define	TIFFTAG_DOTRANGE		336	/* !0% and 100% dot codes */
+#define	TIFFTAG_TARGETPRINTER		337	/* !separation target */
+#define	TIFFTAG_EXTRASAMPLES		338	/* !info about extra samples */
+#define	    EXTRASAMPLE_UNSPECIFIED	0	/* !unspecified data */
+#define	    EXTRASAMPLE_ASSOCALPHA	1	/* !associated alpha data */
+#define	    EXTRASAMPLE_UNASSALPHA	2	/* !unassociated alpha data */
+#define	TIFFTAG_SAMPLEFORMAT		339	/* !data sample format */
+#define	    SAMPLEFORMAT_UINT		1	/* !unsigned integer data */
+#define	    SAMPLEFORMAT_INT		2	/* !signed integer data */
+#define	    SAMPLEFORMAT_IEEEFP		3	/* !IEEE floating point data */
+#define	    SAMPLEFORMAT_VOID		4	/* !untyped data */
+#define	    SAMPLEFORMAT_COMPLEXINT	5	/* !complex signed int */
+#define	    SAMPLEFORMAT_COMPLEXIEEEFP	6	/* !complex ieee floating */
+#define	TIFFTAG_SMINSAMPLEVALUE		340	/* !variable MinSampleValue */
+#define	TIFFTAG_SMAXSAMPLEVALUE		341	/* !variable MaxSampleValue */
+#define	TIFFTAG_CLIPPATH		343	/* %ClipPath
+						   [Adobe TIFF technote 2] */
+#define	TIFFTAG_XCLIPPATHUNITS		344	/* %XClipPathUnits
+						   [Adobe TIFF technote 2] */
+#define	TIFFTAG_YCLIPPATHUNITS		345	/* %YClipPathUnits
+						   [Adobe TIFF technote 2] */
+#define	TIFFTAG_INDEXED			346	/* %Indexed
+						   [Adobe TIFF Technote 3] */
+#define	TIFFTAG_JPEGTABLES		347	/* %JPEG table stream */
+#define	TIFFTAG_OPIPROXY		351	/* %OPI Proxy [Adobe TIFF technote] */
+/*
+ * Tags 512-521 are obsoleted by Technical Note #2 which specifies a
+ * revised JPEG-in-TIFF scheme.
+ */
+#define	TIFFTAG_JPEGPROC		512	/* !JPEG processing algorithm */
+#define	    JPEGPROC_BASELINE		1	/* !baseline sequential */
+#define	    JPEGPROC_LOSSLESS		14	/* !Huffman coded lossless */
+#define	TIFFTAG_JPEGIFOFFSET		513	/* !pointer to SOI marker */
+#define	TIFFTAG_JPEGIFBYTECOUNT		514	/* !JFIF stream length */
+#define	TIFFTAG_JPEGRESTARTINTERVAL	515	/* !restart interval length */
+#define	TIFFTAG_JPEGLOSSLESSPREDICTORS	517	/* !lossless proc predictor */
+#define	TIFFTAG_JPEGPOINTTRANSFORM	518	/* !lossless point transform */
+#define	TIFFTAG_JPEGQTABLES		519	/* !Q matrice offsets */
+#define	TIFFTAG_JPEGDCTABLES		520	/* !DCT table offsets */
+#define	TIFFTAG_JPEGACTABLES		521	/* !AC coefficient offsets */
+#define	TIFFTAG_YCBCRCOEFFICIENTS	529	/* !RGB -> YCbCr transform */
+#define	TIFFTAG_YCBCRSUBSAMPLING	530	/* !YCbCr subsampling factors */
+#define	TIFFTAG_YCBCRPOSITIONING	531	/* !subsample positioning */
+#define	    YCBCRPOSITION_CENTERED	1	/* !as in PostScript Level 2 */
+#define	    YCBCRPOSITION_COSITED	2	/* !as in CCIR 601-1 */
+#define	TIFFTAG_REFERENCEBLACKWHITE	532	/* !colorimetry info */
+#define	TIFFTAG_XMLPACKET		700	/* %XML packet
+						   [Adobe XMP Specification,
+						   January 2004 */
+#define TIFFTAG_OPIIMAGEID		32781	/* %OPI ImageID
+						   [Adobe TIFF technote] */
+/* tags 32952-32956 are private tags registered to Island Graphics */
+#define TIFFTAG_REFPTS			32953	/* image reference points */
+#define TIFFTAG_REGIONTACKPOINT		32954	/* region-xform tack point */
+#define TIFFTAG_REGIONWARPCORNERS	32955	/* warp quadrilateral */
+#define TIFFTAG_REGIONAFFINE		32956	/* affine transformation mat */
+/* tags 32995-32999 are private tags registered to SGI */
+#define	TIFFTAG_MATTEING		32995	/* $use ExtraSamples */
+#define	TIFFTAG_DATATYPE		32996	/* $use SampleFormat */
+#define	TIFFTAG_IMAGEDEPTH		32997	/* z depth of image */
+#define	TIFFTAG_TILEDEPTH		32998	/* z depth/data tile */
+/* tags 33300-33309 are private tags registered to Pixar */
+/*
+ * TIFFTAG_PIXAR_IMAGEFULLWIDTH and TIFFTAG_PIXAR_IMAGEFULLLENGTH
+ * are set when an image has been cropped out of a larger image.  
+ * They reflect the size of the original uncropped image.
+ * The TIFFTAG_XPOSITION and TIFFTAG_YPOSITION can be used
+ * to determine the position of the smaller image in the larger one.
+ */
+#define TIFFTAG_PIXAR_IMAGEFULLWIDTH    33300   /* full image size in x */
+#define TIFFTAG_PIXAR_IMAGEFULLLENGTH   33301   /* full image size in y */
+ /* Tags 33302-33306 are used to identify special image modes and data
+  * used by Pixar's texture formats.
+  */
+#define TIFFTAG_PIXAR_TEXTUREFORMAT	33302	/* texture map format */
+#define TIFFTAG_PIXAR_WRAPMODES		33303	/* s & t wrap modes */
+#define TIFFTAG_PIXAR_FOVCOT		33304	/* cotan(fov) for env. maps */
+#define TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN 33305
+#define TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA 33306
+/* tag 33405 is a private tag registered to Eastman Kodak */
+#define TIFFTAG_WRITERSERIALNUMBER      33405   /* device serial number */
+/* tag 33432 is listed in the 6.0 spec w/ unknown ownership */
+#define	TIFFTAG_COPYRIGHT		33432	/* copyright string */
+/* IPTC TAG from RichTIFF specifications */
+#define TIFFTAG_RICHTIFFIPTC		33723
+/* 34016-34029 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */
+#define TIFFTAG_IT8SITE			34016	/* site name */
+#define TIFFTAG_IT8COLORSEQUENCE	34017	/* color seq. [RGB,CMYK,etc] */
+#define TIFFTAG_IT8HEADER		34018	/* DDES Header */
+#define TIFFTAG_IT8RASTERPADDING	34019	/* raster scanline padding */
+#define TIFFTAG_IT8BITSPERRUNLENGTH	34020	/* # of bits in short run */
+#define TIFFTAG_IT8BITSPEREXTENDEDRUNLENGTH 34021/* # of bits in long run */
+#define TIFFTAG_IT8COLORTABLE		34022	/* LW colortable */
+#define TIFFTAG_IT8IMAGECOLORINDICATOR	34023	/* BP/BL image color switch */
+#define TIFFTAG_IT8BKGCOLORINDICATOR	34024	/* BP/BL bg color switch */
+#define TIFFTAG_IT8IMAGECOLORVALUE	34025	/* BP/BL image color value */
+#define TIFFTAG_IT8BKGCOLORVALUE	34026	/* BP/BL bg color value */
+#define TIFFTAG_IT8PIXELINTENSITYRANGE	34027	/* MP pixel intensity value */
+#define TIFFTAG_IT8TRANSPARENCYINDICATOR 34028	/* HC transparency switch */
+#define TIFFTAG_IT8COLORCHARACTERIZATION 34029	/* color character. table */
+#define TIFFTAG_IT8HCUSAGE		34030	/* HC usage indicator */
+#define TIFFTAG_IT8TRAPINDICATOR	34031	/* Trapping indicator
+						   (untrapped=0, trapped=1) */
+#define TIFFTAG_IT8CMYKEQUIVALENT	34032	/* CMYK color equivalents */
+/* tags 34232-34236 are private tags registered to Texas Instruments */
+#define TIFFTAG_FRAMECOUNT              34232   /* Sequence Frame Count */
+/* tag 34377 is private tag registered to Adobe for PhotoShop */
+#define TIFFTAG_PHOTOSHOP		34377 
+/* tags 34665, 34853 and 40965 are documented in EXIF specification */
+#define TIFFTAG_EXIFIFD			34665	/* Pointer to EXIF private directory */
+/* tag 34750 is a private tag registered to Adobe? */
+#define TIFFTAG_ICCPROFILE		34675	/* ICC profile data */
+/* tag 34750 is a private tag registered to Pixel Magic */
+#define	TIFFTAG_JBIGOPTIONS		34750	/* JBIG options */
+#define TIFFTAG_GPSIFD			34853	/* Pointer to GPS private directory */
+/* tags 34908-34914 are private tags registered to SGI */
+#define	TIFFTAG_FAXRECVPARAMS		34908	/* encoded Class 2 ses. parms */
+#define	TIFFTAG_FAXSUBADDRESS		34909	/* received SubAddr string */
+#define	TIFFTAG_FAXRECVTIME		34910	/* receive time (secs) */
+#define	TIFFTAG_FAXDCS			34911	/* encoded fax ses. params, Table 2/T.30 */
+/* tags 37439-37443 are registered to SGI <gregl@sgi.com> */
+#define TIFFTAG_STONITS			37439	/* Sample value to Nits */
+/* tag 34929 is a private tag registered to FedEx */
+#define	TIFFTAG_FEDEX_EDR		34929	/* unknown use */
+#define TIFFTAG_INTEROPERABILITYIFD	40965	/* Pointer to Interoperability private directory */
+/* Adobe Digital Negative (DNG) format tags */
+#define TIFFTAG_DNGVERSION		50706	/* &DNG version number */
+#define TIFFTAG_DNGBACKWARDVERSION	50707	/* &DNG compatibility version */
+#define TIFFTAG_UNIQUECAMERAMODEL	50708	/* &name for the camera model */
+#define TIFFTAG_LOCALIZEDCAMERAMODEL	50709	/* &localized camera model
+						   name */
+#define TIFFTAG_CFAPLANECOLOR		50710	/* &CFAPattern->LinearRaw space
+						   mapping */
+#define TIFFTAG_CFALAYOUT		50711	/* &spatial layout of the CFA */
+#define TIFFTAG_LINEARIZATIONTABLE	50712	/* &lookup table description */
+#define TIFFTAG_BLACKLEVELREPEATDIM	50713	/* &repeat pattern size for
+						   the BlackLevel tag */
+#define TIFFTAG_BLACKLEVEL		50714	/* &zero light encoding level */
+#define TIFFTAG_BLACKLEVELDELTAH	50715	/* &zero light encoding level
+						   differences (columns) */
+#define TIFFTAG_BLACKLEVELDELTAV	50716	/* &zero light encoding level
+						   differences (rows) */
+#define TIFFTAG_WHITELEVEL		50717	/* &fully saturated encoding
+						   level */
+#define TIFFTAG_DEFAULTSCALE		50718	/* &default scale factors */
+#define TIFFTAG_DEFAULTCROPORIGIN	50719	/* &origin of the final image
+						   area */
+#define TIFFTAG_DEFAULTCROPSIZE		50720	/* &size of the final image 
+						   area */
+#define TIFFTAG_COLORMATRIX1		50721	/* &XYZ->reference color space
+						   transformation matrix 1 */
+#define TIFFTAG_COLORMATRIX2		50722	/* &XYZ->reference color space
+						   transformation matrix 2 */
+#define TIFFTAG_CAMERACALIBRATION1	50723	/* &calibration matrix 1 */
+#define TIFFTAG_CAMERACALIBRATION2	50724	/* &calibration matrix 2 */
+#define TIFFTAG_REDUCTIONMATRIX1	50725	/* &dimensionality reduction
+						   matrix 1 */
+#define TIFFTAG_REDUCTIONMATRIX2	50726	/* &dimensionality reduction
+						   matrix 2 */
+#define TIFFTAG_ANALOGBALANCE		50727	/* &gain applied the stored raw
+						   values*/
+#define TIFFTAG_ASSHOTNEUTRAL		50728	/* &selected white balance in
+						   linear reference space */
+#define TIFFTAG_ASSHOTWHITEXY		50729	/* &selected white balance in
+						   x-y chromaticity
+						   coordinates */
+#define TIFFTAG_BASELINEEXPOSURE	50730	/* &how much to move the zero
+						   point */
+#define TIFFTAG_BASELINENOISE		50731	/* &relative noise level */
+#define TIFFTAG_BASELINESHARPNESS	50732	/* &relative amount of
+						   sharpening */
+#define TIFFTAG_BAYERGREENSPLIT		50733	/* &how closely the values of
+						   the green pixels in the
+						   blue/green rows track the
+						   values of the green pixels
+						   in the red/green rows */
+#define TIFFTAG_LINEARRESPONSELIMIT	50734	/* &non-linear encoding range */
+#define TIFFTAG_CAMERASERIALNUMBER	50735	/* &camera's serial number */
+#define TIFFTAG_LENSINFO		50736	/* info about the lens */
+#define TIFFTAG_CHROMABLURRADIUS	50737	/* &chroma blur radius */
+#define TIFFTAG_ANTIALIASSTRENGTH	50738	/* &relative strength of the
+						   camera's anti-alias filter */
+#define TIFFTAG_SHADOWSCALE		50739	/* &used by Adobe Camera Raw */
+#define TIFFTAG_DNGPRIVATEDATA		50740	/* &manufacturer's private data */
+#define TIFFTAG_MAKERNOTESAFETY		50741	/* &whether the EXIF MakerNote
+						   tag is safe to preserve
+						   along with the rest of the
+						   EXIF data */
+#define	TIFFTAG_CALIBRATIONILLUMINANT1	50778	/* &illuminant 1 */
+#define TIFFTAG_CALIBRATIONILLUMINANT2	50779	/* &illuminant 2 */
+#define TIFFTAG_BESTQUALITYSCALE	50780	/* &best quality multiplier */
+#define TIFFTAG_RAWDATAUNIQUEID		50781	/* &unique identifier for
+						   the raw image data */
+#define TIFFTAG_ORIGINALRAWFILENAME	50827	/* &file name of the original
+						   raw file */
+#define TIFFTAG_ORIGINALRAWFILEDATA	50828	/* &contents of the original
+						   raw file */
+#define TIFFTAG_ACTIVEAREA		50829	/* &active (non-masked) pixels
+						   of the sensor */
+#define TIFFTAG_MASKEDAREAS		50830	/* &list of coordinates
+						   of fully masked pixels */
+#define TIFFTAG_ASSHOTICCPROFILE	50831	/* &these two tags used to */
+#define TIFFTAG_ASSHOTPREPROFILEMATRIX	50832	/* map cameras's color space
+						   into ICC profile space */
+#define TIFFTAG_CURRENTICCPROFILE	50833	/* & */
+#define TIFFTAG_CURRENTPREPROFILEMATRIX	50834	/* & */
+/* tag 65535 is an undefined tag used by Eastman Kodak */
+#define TIFFTAG_DCSHUESHIFTVALUES       65535   /* hue shift correction data */
+
+/*
+ * The following are ``pseudo tags'' that can be used to control
+ * codec-specific functionality.  These tags are not written to file.
+ * Note that these values start at 0xffff+1 so that they'll never
+ * collide with Aldus-assigned tags.
+ *
+ * If you want your private pseudo tags ``registered'' (i.e. added to
+ * this file), please post a bug report via the tracking system at
+ * http://www.remotesensing.org/libtiff/bugs.html with the appropriate
+ * C definitions to add.
+ */
+#define	TIFFTAG_FAXMODE			65536	/* Group 3/4 format control */
+#define	    FAXMODE_CLASSIC	0x0000		/* default, include RTC */
+#define	    FAXMODE_NORTC	0x0001		/* no RTC at end of data */
+#define	    FAXMODE_NOEOL	0x0002		/* no EOL code at end of row */
+#define	    FAXMODE_BYTEALIGN	0x0004		/* byte align row */
+#define	    FAXMODE_WORDALIGN	0x0008		/* word align row */
+#define	    FAXMODE_CLASSF	FAXMODE_NORTC	/* TIFF Class F */
+#define	TIFFTAG_JPEGQUALITY		65537	/* Compression quality level */
+/* Note: quality level is on the IJG 0-100 scale.  Default value is 75 */
+#define	TIFFTAG_JPEGCOLORMODE		65538	/* Auto RGB<=>YCbCr convert? */
+#define	    JPEGCOLORMODE_RAW	0x0000		/* no conversion (default) */
+#define	    JPEGCOLORMODE_RGB	0x0001		/* do auto conversion */
+#define	TIFFTAG_JPEGTABLESMODE		65539	/* What to put in JPEGTables */
+#define	    JPEGTABLESMODE_QUANT 0x0001		/* include quantization tbls */
+#define	    JPEGTABLESMODE_HUFF	0x0002		/* include Huffman tbls */
+/* Note: default is JPEGTABLESMODE_QUANT | JPEGTABLESMODE_HUFF */
+#define	TIFFTAG_FAXFILLFUNC		65540	/* G3/G4 fill function */
+#define	TIFFTAG_PIXARLOGDATAFMT		65549	/* PixarLogCodec I/O data sz */
+#define	    PIXARLOGDATAFMT_8BIT	0	/* regular u_char samples */
+#define	    PIXARLOGDATAFMT_8BITABGR	1	/* ABGR-order u_chars */
+#define	    PIXARLOGDATAFMT_11BITLOG	2	/* 11-bit log-encoded (raw) */
+#define	    PIXARLOGDATAFMT_12BITPICIO	3	/* as per PICIO (1.0==2048) */
+#define	    PIXARLOGDATAFMT_16BIT	4	/* signed short samples */
+#define	    PIXARLOGDATAFMT_FLOAT	5	/* IEEE float samples */
+/* 65550-65556 are allocated to Oceana Matrix <dev@oceana.com> */
+#define TIFFTAG_DCSIMAGERTYPE           65550   /* imager model & filter */
+#define     DCSIMAGERMODEL_M3           0       /* M3 chip (1280 x 1024) */
+#define     DCSIMAGERMODEL_M5           1       /* M5 chip (1536 x 1024) */
+#define     DCSIMAGERMODEL_M6           2       /* M6 chip (3072 x 2048) */
+#define     DCSIMAGERFILTER_IR          0       /* infrared filter */
+#define     DCSIMAGERFILTER_MONO        1       /* monochrome filter */
+#define     DCSIMAGERFILTER_CFA         2       /* color filter array */
+#define     DCSIMAGERFILTER_OTHER       3       /* other filter */
+#define TIFFTAG_DCSINTERPMODE           65551   /* interpolation mode */
+#define     DCSINTERPMODE_NORMAL        0x0     /* whole image, default */
+#define     DCSINTERPMODE_PREVIEW       0x1     /* preview of image (384x256) */
+#define TIFFTAG_DCSBALANCEARRAY         65552   /* color balance values */
+#define TIFFTAG_DCSCORRECTMATRIX        65553   /* color correction values */
+#define TIFFTAG_DCSGAMMA                65554   /* gamma value */
+#define TIFFTAG_DCSTOESHOULDERPTS       65555   /* toe & shoulder points */
+#define TIFFTAG_DCSCALIBRATIONFD        65556   /* calibration file desc */
+/* Note: quality level is on the ZLIB 1-9 scale. Default value is -1 */
+#define	TIFFTAG_ZIPQUALITY		65557	/* compression quality level */
+#define	TIFFTAG_PIXARLOGQUALITY		65558	/* PixarLog uses same scale */
+/* 65559 is allocated to Oceana Matrix <dev@oceana.com> */
+#define TIFFTAG_DCSCLIPRECTANGLE	65559	/* area of image to acquire */
+#define TIFFTAG_SGILOGDATAFMT		65560	/* SGILog user data format */
+#define     SGILOGDATAFMT_FLOAT		0	/* IEEE float samples */
+#define     SGILOGDATAFMT_16BIT		1	/* 16-bit samples */
+#define     SGILOGDATAFMT_RAW		2	/* uninterpreted data */
+#define     SGILOGDATAFMT_8BIT		3	/* 8-bit RGB monitor values */
+#define TIFFTAG_SGILOGENCODE		65561 /* SGILog data encoding control*/
+#define     SGILOGENCODE_NODITHER	0     /* do not dither encoded values*/
+#define     SGILOGENCODE_RANDITHER	1     /* randomly dither encd values */
+
+/*
+ * EXIF tags
+ */
+#define EXIFTAG_EXPOSURETIME		33434	/* Exposure time */
+#define EXIFTAG_FNUMBER			33437	/* F number */
+#define EXIFTAG_EXPOSUREPROGRAM		34850	/* Exposure program */
+#define EXIFTAG_SPECTRALSENSITIVITY	34852	/* Spectral sensitivity */
+#define EXIFTAG_ISOSPEEDRATINGS		34855	/* ISO speed rating */
+#define EXIFTAG_OECF			34856	/* Optoelectric conversion
+						   factor */
+#define EXIFTAG_EXIFVERSION		36864	/* Exif version */
+#define EXIFTAG_DATETIMEORIGINAL	36867	/* Date and time of original
+						   data generation */
+#define EXIFTAG_DATETIMEDIGITIZED	36868	/* Date and time of digital
+						   data generation */
+#define EXIFTAG_COMPONENTSCONFIGURATION	37121	/* Meaning of each component */
+#define EXIFTAG_COMPRESSEDBITSPERPIXEL	37122	/* Image compression mode */
+#define EXIFTAG_SHUTTERSPEEDVALUE	37377	/* Shutter speed */
+#define EXIFTAG_APERTUREVALUE		37378	/* Aperture */
+#define EXIFTAG_BRIGHTNESSVALUE		37379	/* Brightness */
+#define EXIFTAG_EXPOSUREBIASVALUE	37380	/* Exposure bias */
+#define EXIFTAG_MAXAPERTUREVALUE	37381	/* Maximum lens aperture */
+#define EXIFTAG_SUBJECTDISTANCE		37382	/* Subject distance */
+#define EXIFTAG_METERINGMODE		37383	/* Metering mode */
+#define EXIFTAG_LIGHTSOURCE		37384	/* Light source */
+#define EXIFTAG_FLASH			37385	/* Flash */
+#define EXIFTAG_FOCALLENGTH		37386	/* Lens focal length */
+#define EXIFTAG_SUBJECTAREA		37396	/* Subject area */
+#define EXIFTAG_MAKERNOTE		37500	/* Manufacturer notes */
+#define EXIFTAG_USERCOMMENT		37510	/* User comments */
+#define EXIFTAG_SUBSECTIME		37520	/* DateTime subseconds */
+#define EXIFTAG_SUBSECTIMEORIGINAL	37521	/* DateTimeOriginal subseconds */
+#define EXIFTAG_SUBSECTIMEDIGITIZED	37522	/* DateTimeDigitized subseconds */
+#define EXIFTAG_FLASHPIXVERSION		40960	/* Supported Flashpix version */
+#define EXIFTAG_COLORSPACE		40961	/* Color space information */
+#define EXIFTAG_PIXELXDIMENSION		40962	/* Valid image width */
+#define EXIFTAG_PIXELYDIMENSION		40963	/* Valid image height */
+#define EXIFTAG_RELATEDSOUNDFILE	40964	/* Related audio file */
+#define EXIFTAG_FLASHENERGY		41483	/* Flash energy */
+#define EXIFTAG_SPATIALFREQUENCYRESPONSE 41484	/* Spatial frequency response */
+#define EXIFTAG_FOCALPLANEXRESOLUTION	41486	/* Focal plane X resolution */
+#define EXIFTAG_FOCALPLANEYRESOLUTION	41487	/* Focal plane Y resolution */
+#define EXIFTAG_FOCALPLANERESOLUTIONUNIT 41488	/* Focal plane resolution unit */
+#define EXIFTAG_SUBJECTLOCATION		41492	/* Subject location */
+#define EXIFTAG_EXPOSUREINDEX		41493	/* Exposure index */
+#define EXIFTAG_SENSINGMETHOD		41495	/* Sensing method */
+#define EXIFTAG_FILESOURCE		41728	/* File source */
+#define EXIFTAG_SCENETYPE		41729	/* Scene type */
+#define EXIFTAG_CFAPATTERN		41730	/* CFA pattern */
+#define EXIFTAG_CUSTOMRENDERED		41985	/* Custom image processing */
+#define EXIFTAG_EXPOSUREMODE		41986	/* Exposure mode */
+#define EXIFTAG_WHITEBALANCE		41987	/* White balance */
+#define EXIFTAG_DIGITALZOOMRATIO	41988	/* Digital zoom ratio */
+#define EXIFTAG_FOCALLENGTHIN35MMFILM	41989	/* Focal length in 35 mm film */
+#define EXIFTAG_SCENECAPTURETYPE	41990	/* Scene capture type */
+#define EXIFTAG_GAINCONTROL		41991	/* Gain control */
+#define EXIFTAG_CONTRAST		41992	/* Contrast */
+#define EXIFTAG_SATURATION		41993	/* Saturation */
+#define EXIFTAG_SHARPNESS		41994	/* Sharpness */
+#define EXIFTAG_DEVICESETTINGDESCRIPTION 41995	/* Device settings description */
+#define EXIFTAG_SUBJECTDISTANCERANGE	41996	/* Subject distance range */
+#define EXIFTAG_GAINCONTROL		41991	/* Gain control */
+#define EXIFTAG_GAINCONTROL		41991	/* Gain control */
+#define EXIFTAG_IMAGEUNIQUEID		42016	/* Unique image ID */
+
+#endif /* _TIFF_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tiffio.h b/src/libtiff/tiffio.h
new file mode 100644
index 0000000..3a5eebd
--- /dev/null
+++ b/src/libtiff/tiffio.h
@@ -0,0 +1,515 @@
+/* $Id: tiffio.h,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFIO_
+#define	_TIFFIO_
+
+/*
+ * TIFF I/O Library Definitions.
+ */
+#include "tiff.h"
+#include "tiffvers.h"
+
+/*
+ * TIFF is defined as an incomplete type to hide the
+ * library's internal data structures from clients.
+ */
+typedef	struct tiff TIFF;
+
+/*
+ * The following typedefs define the intrinsic size of
+ * data types used in the *exported* interfaces.  These
+ * definitions depend on the proper definition of types
+ * in tiff.h.  Note also that the varargs interface used
+ * to pass tag types and values uses the types defined in
+ * tiff.h directly.
+ *
+ * NB: ttag_t is unsigned int and not unsigned short because
+ *     ANSI C requires that the type before the ellipsis be a
+ *     promoted type (i.e. one of int, unsigned int, pointer,
+ *     or double) and because we defined pseudo-tags that are
+ *     outside the range of legal Aldus-assigned tags.
+ * NB: tsize_t is int32 and not uint32 because some functions
+ *     return -1.
+ * NB: toff_t is not off_t for many reasons; TIFFs max out at
+ *     32-bit file offsets being the most important, and to ensure
+ *     that it is unsigned, rather than signed.
+ */
+typedef	uint32 ttag_t;		/* directory tag */
+typedef	uint16 tdir_t;		/* directory index */
+typedef	uint16 tsample_t;	/* sample number */
+typedef	uint32 tstrip_t;	/* strip number */
+typedef uint32 ttile_t;		/* tile number */
+typedef	int32 tsize_t;		/* i/o size in bytes */
+typedef	void* tdata_t;		/* image data ref */
+typedef	uint32 toff_t;		/* file offset */
+
+#if !defined(__WIN32__) && (defined(_WIN32) || defined(WIN32))
+#define __WIN32__
+#endif
+
+/*
+ * On windows you should define USE_WIN32_FILEIO if you are using tif_win32.c
+ * or AVOID_WIN32_FILEIO if you are using something else (like tif_unix.c).
+ *
+ * By default tif_unix.c is assumed.
+ */
+
+#if defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
+#  if !defined(__CYGWIN) && !defined(AVOID_WIN32_FILEIO) && !defined(USE_WIN32_FILEIO)
+#    define AVOID_WIN32_FILEIO
+#  endif
+#endif
+
+#if defined(USE_WIN32_FILEIO)
+# define VC_EXTRALEAN
+# include <windows.h>
+# ifdef __WIN32__
+DECLARE_HANDLE(thandle_t);	/* Win32 file handle */
+# else
+typedef	HFILE thandle_t;	/* client data handle */
+# endif /* __WIN32__ */
+#else
+typedef	void* thandle_t;	/* client data handle */
+#endif /* USE_WIN32_FILEIO */
+
+#ifndef NULL
+# define NULL	(void *)0
+#endif
+
+/*
+ * Flags to pass to TIFFPrintDirectory to control
+ * printing of data structures that are potentially
+ * very large.   Bit-or these flags to enable printing
+ * multiple items.
+ */
+#define	TIFFPRINT_NONE		0x0		/* no extra info */
+#define	TIFFPRINT_STRIPS	0x1		/* strips/tiles info */
+#define	TIFFPRINT_CURVES	0x2		/* color/gray response curves */
+#define	TIFFPRINT_COLORMAP	0x4		/* colormap */
+#define	TIFFPRINT_JPEGQTABLES	0x100		/* JPEG Q matrices */
+#define	TIFFPRINT_JPEGACTABLES	0x200		/* JPEG AC tables */
+#define	TIFFPRINT_JPEGDCTABLES	0x200		/* JPEG DC tables */
+
+/* 
+ * Colour conversion stuff
+ */
+
+/* reference white */
+#define D65_X0 (95.0470F)
+#define D65_Y0 (100.0F)
+#define D65_Z0 (108.8827F)
+
+#define D50_X0 (96.4250F)
+#define D50_Y0 (100.0F)
+#define D50_Z0 (82.4680F)
+
+/* Structure for holding information about a display device. */
+
+typedef	unsigned char TIFFRGBValue;		/* 8-bit samples */
+
+typedef struct {
+	float d_mat[3][3]; 		/* XYZ -> luminance matrix */
+	float d_YCR;			/* Light o/p for reference white */
+	float d_YCG;
+	float d_YCB;
+	uint32 d_Vrwr;			/* Pixel values for ref. white */
+	uint32 d_Vrwg;
+	uint32 d_Vrwb;
+	float d_Y0R;			/* Residual light for black pixel */
+	float d_Y0G;
+	float d_Y0B;
+	float d_gammaR;			/* Gamma values for the three guns */
+	float d_gammaG;
+	float d_gammaB;
+} TIFFDisplay;
+
+typedef struct {				/* YCbCr->RGB support */
+	TIFFRGBValue* clamptab;			/* range clamping table */
+	int*	Cr_r_tab;
+	int*	Cb_b_tab;
+	int32*	Cr_g_tab;
+	int32*	Cb_g_tab;
+        int32*  Y_tab;
+} TIFFYCbCrToRGB;
+
+typedef struct {				/* CIE Lab 1976->RGB support */
+	int	range;				/* Size of conversion table */
+#define CIELABTORGB_TABLE_RANGE 1500
+	float	rstep, gstep, bstep;
+	float	X0, Y0, Z0;			/* Reference white point */
+	TIFFDisplay display;
+	float	Yr2r[CIELABTORGB_TABLE_RANGE + 1];  /* Conversion of Yr to r */
+	float	Yg2g[CIELABTORGB_TABLE_RANGE + 1];  /* Conversion of Yg to g */
+	float	Yb2b[CIELABTORGB_TABLE_RANGE + 1];  /* Conversion of Yb to b */
+} TIFFCIELabToRGB;
+
+/*
+ * RGBA-style image support.
+ */
+typedef struct _TIFFRGBAImage TIFFRGBAImage;
+/*
+ * The image reading and conversion routines invoke
+ * ``put routines'' to copy/image/whatever tiles of
+ * raw image data.  A default set of routines are 
+ * provided to convert/copy raw image data to 8-bit
+ * packed ABGR format rasters.  Applications can supply
+ * alternate routines that unpack the data into a
+ * different format or, for example, unpack the data
+ * and draw the unpacked raster on the display.
+ */
+typedef void (*tileContigRoutine)
+    (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
+	unsigned char*);
+typedef void (*tileSeparateRoutine)
+    (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
+	unsigned char*, unsigned char*, unsigned char*, unsigned char*);
+/*
+ * RGBA-reader state.
+ */
+struct _TIFFRGBAImage {
+	TIFF*	tif;				/* image handle */
+	int	stoponerr;			/* stop on read error */
+	int	isContig;			/* data is packed/separate */
+	int	alpha;				/* type of alpha data present */
+	uint32	width;				/* image width */
+	uint32	height;				/* image height */
+	uint16	bitspersample;			/* image bits/sample */
+	uint16	samplesperpixel;		/* image samples/pixel */
+	uint16	orientation;			/* image orientation */
+	uint16	req_orientation;		/* requested orientation */
+	uint16	photometric;			/* image photometric interp */
+	uint16*	redcmap;			/* colormap pallete */
+	uint16*	greencmap;
+	uint16*	bluecmap;
+						/* get image data routine */
+	int	(*get)(TIFFRGBAImage*, uint32*, uint32, uint32);
+	union {
+	    void (*any)(TIFFRGBAImage*);
+	    tileContigRoutine	contig;
+	    tileSeparateRoutine	separate;
+	} put;					/* put decoded strip/tile */
+	TIFFRGBValue* Map;			/* sample mapping array */
+	uint32** BWmap;				/* black&white map */
+	uint32** PALmap;			/* palette image map */
+	TIFFYCbCrToRGB* ycbcr;			/* YCbCr conversion state */
+        TIFFCIELabToRGB* cielab;		/* CIE L*a*b conversion state */
+
+        int	row_offset;
+        int     col_offset;
+};
+
+/*
+ * Macros for extracting components from the
+ * packed ABGR form returned by TIFFReadRGBAImage.
+ */
+#define	TIFFGetR(abgr)	((abgr) & 0xff)
+#define	TIFFGetG(abgr)	(((abgr) >> 8) & 0xff)
+#define	TIFFGetB(abgr)	(((abgr) >> 16) & 0xff)
+#define	TIFFGetA(abgr)	(((abgr) >> 24) & 0xff)
+
+/*
+ * A CODEC is a software package that implements decoding,
+ * encoding, or decoding+encoding of a compression algorithm.
+ * The library provides a collection of builtin codecs.
+ * More codecs may be registered through calls to the library
+ * and/or the builtin implementations may be overridden.
+ */
+typedef	int (*TIFFInitMethod)(TIFF*, int);
+typedef struct {
+	char*		name;
+	uint16		scheme;
+	TIFFInitMethod	init;
+} TIFFCodec;
+
+#include <stdio.h>
+#include <stdarg.h>
+
+/* share internal LogLuv conversion routines? */
+#ifndef LOGLUV_PUBLIC
+#define LOGLUV_PUBLIC		1
+#endif
+
+#if defined(c_plusplus) || defined(__cplusplus)
+extern "C" {
+#endif
+typedef	void (*TIFFErrorHandler)(const char*, const char*, va_list);
+typedef	void (*TIFFErrorHandlerExt)(thandle_t, const char*, const char*, va_list);
+typedef	tsize_t (*TIFFReadWriteProc)(thandle_t, tdata_t, tsize_t);
+typedef	toff_t (*TIFFSeekProc)(thandle_t, toff_t, int);
+typedef	int (*TIFFCloseProc)(thandle_t);
+typedef	toff_t (*TIFFSizeProc)(thandle_t);
+typedef	int (*TIFFMapFileProc)(thandle_t, tdata_t*, toff_t*);
+typedef	void (*TIFFUnmapFileProc)(thandle_t, tdata_t, toff_t);
+typedef	void (*TIFFExtendProc)(TIFF*); 
+
+extern	const char* TIFFGetVersion(void);
+
+extern	const TIFFCodec* TIFFFindCODEC(uint16);
+extern	TIFFCodec* TIFFRegisterCODEC(uint16, const char*, TIFFInitMethod);
+extern	void TIFFUnRegisterCODEC(TIFFCodec*);
+extern  int TIFFIsCODECConfigured(uint16);
+extern	TIFFCodec* TIFFGetConfiguredCODECs(void);
+
+/*
+ * Auxiliary functions.
+ */
+
+extern	tdata_t _TIFFmalloc(tsize_t);
+extern	tdata_t _TIFFrealloc(tdata_t, tsize_t);
+extern	void _TIFFmemset(tdata_t, int, tsize_t);
+extern	void _TIFFmemcpy(tdata_t, const tdata_t, tsize_t);
+extern	int _TIFFmemcmp(const tdata_t, const tdata_t, tsize_t);
+extern	void _TIFFfree(tdata_t);
+
+/*
+** Stuff, related to tag handling and creating custom tags.
+*/
+extern  int  TIFFGetTagListCount( TIFF * );
+extern  ttag_t TIFFGetTagListEntry( TIFF *, int tag_index );
+    
+#define	TIFF_ANY	TIFF_NOTYPE	/* for field descriptor searching */
+#define	TIFF_VARIABLE	-1		/* marker for variable length tags */
+#define	TIFF_SPP	-2		/* marker for SamplesPerPixel tags */
+#define	TIFF_VARIABLE2	-3		/* marker for uint32 var-length tags */
+
+#define FIELD_CUSTOM    65    
+
+typedef	struct {
+	ttag_t	field_tag;		/* field's tag */
+	short	field_readcount;	/* read count/TIFF_VARIABLE/TIFF_SPP */
+	short	field_writecount;	/* write count/TIFF_VARIABLE */
+	TIFFDataType field_type;	/* type of associated data */
+        unsigned short field_bit;	/* bit in fieldsset bit vector */
+	unsigned char field_oktochange;	/* if true, can change while writing */
+	unsigned char field_passcount;	/* if true, pass dir count on set */
+	char	*field_name;		/* ASCII name */
+} TIFFFieldInfo;
+
+typedef struct _TIFFTagValue {
+    const TIFFFieldInfo  *info;
+    int             count;
+    void           *value;
+} TIFFTagValue;
+
+extern	void TIFFMergeFieldInfo(TIFF*, const TIFFFieldInfo[], int);
+extern	const TIFFFieldInfo* TIFFFindFieldInfo(TIFF*, ttag_t, TIFFDataType);
+extern  const TIFFFieldInfo* TIFFFindFieldInfoByName(TIFF* , const char *,
+						     TIFFDataType);
+extern	const TIFFFieldInfo* TIFFFieldWithTag(TIFF*, ttag_t);
+extern	const TIFFFieldInfo* TIFFFieldWithName(TIFF*, const char *);
+
+typedef	int (*TIFFVSetMethod)(TIFF*, ttag_t, va_list);
+typedef	int (*TIFFVGetMethod)(TIFF*, ttag_t, va_list);
+typedef	void (*TIFFPrintMethod)(TIFF*, FILE*, long);
+    
+typedef struct {
+    TIFFVSetMethod	vsetfield;	/* tag set routine */
+    TIFFVGetMethod	vgetfield;	/* tag get routine */
+    TIFFPrintMethod	printdir;	/* directory print routine */
+} TIFFTagMethods;
+        
+extern  TIFFTagMethods *TIFFAccessTagMethods( TIFF * );
+extern  void *TIFFGetClientInfo( TIFF *, const char * );
+extern  void TIFFSetClientInfo( TIFF *, void *, const char * );
+
+extern	void TIFFCleanup(TIFF*);
+extern	void TIFFClose(TIFF*);
+extern	int TIFFFlush(TIFF*);
+extern	int TIFFFlushData(TIFF*);
+extern	int TIFFGetField(TIFF*, ttag_t, ...);
+extern	int TIFFVGetField(TIFF*, ttag_t, va_list);
+extern	int TIFFGetFieldDefaulted(TIFF*, ttag_t, ...);
+extern	int TIFFVGetFieldDefaulted(TIFF*, ttag_t, va_list);
+extern	int TIFFReadDirectory(TIFF*);
+extern	int TIFFReadCustomDirectory(TIFF*, toff_t, const TIFFFieldInfo[],
+				    size_t);
+extern	int TIFFReadEXIFDirectory(TIFF*, toff_t);
+extern	tsize_t TIFFScanlineSize(TIFF*);
+extern	tsize_t TIFFRasterScanlineSize(TIFF*);
+extern	tsize_t TIFFStripSize(TIFF*);
+extern	tsize_t TIFFRawStripSize(TIFF*, tstrip_t);
+extern	tsize_t TIFFVStripSize(TIFF*, uint32);
+extern	tsize_t TIFFTileRowSize(TIFF*);
+extern	tsize_t TIFFTileSize(TIFF*);
+extern	tsize_t TIFFVTileSize(TIFF*, uint32);
+extern	uint32 TIFFDefaultStripSize(TIFF*, uint32);
+extern	void TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
+extern	int TIFFFileno(TIFF*);
+extern  int TIFFSetFileno(TIFF*, int);
+extern  thandle_t TIFFClientdata(TIFF*);
+extern  thandle_t TIFFSetClientdata(TIFF*, thandle_t);
+extern	int TIFFGetMode(TIFF*);
+extern	int TIFFSetMode(TIFF*, int);
+extern	int TIFFIsTiled(TIFF*);
+extern	int TIFFIsByteSwapped(TIFF*);
+extern	int TIFFIsUpSampled(TIFF*);
+extern	int TIFFIsMSB2LSB(TIFF*);
+extern	int TIFFIsBigEndian(TIFF*);
+extern	TIFFReadWriteProc TIFFGetReadProc(TIFF*);
+extern	TIFFReadWriteProc TIFFGetWriteProc(TIFF*);
+extern	TIFFSeekProc TIFFGetSeekProc(TIFF*);
+extern	TIFFCloseProc TIFFGetCloseProc(TIFF*);
+extern	TIFFSizeProc TIFFGetSizeProc(TIFF*);
+extern	TIFFMapFileProc TIFFGetMapFileProc(TIFF*);
+extern	TIFFUnmapFileProc TIFFGetUnmapFileProc(TIFF*);
+extern	uint32 TIFFCurrentRow(TIFF*);
+extern	tdir_t TIFFCurrentDirectory(TIFF*);
+extern	tdir_t TIFFNumberOfDirectories(TIFF*);
+extern	uint32 TIFFCurrentDirOffset(TIFF*);
+extern	tstrip_t TIFFCurrentStrip(TIFF*);
+extern	ttile_t TIFFCurrentTile(TIFF*);
+extern	int TIFFReadBufferSetup(TIFF*, tdata_t, tsize_t);
+extern	int TIFFWriteBufferSetup(TIFF*, tdata_t, tsize_t);
+extern	int TIFFSetupStrips(TIFF *);
+extern  int TIFFWriteCheck(TIFF*, int, const char *);
+extern	void TIFFFreeDirectory(TIFF*);
+extern  int TIFFCreateDirectory(TIFF*);
+extern	int TIFFLastDirectory(TIFF*);
+extern	int TIFFSetDirectory(TIFF*, tdir_t);
+extern	int TIFFSetSubDirectory(TIFF*, uint32);
+extern	int TIFFUnlinkDirectory(TIFF*, tdir_t);
+extern	int TIFFSetField(TIFF*, ttag_t, ...);
+extern	int TIFFVSetField(TIFF*, ttag_t, va_list);
+extern	int TIFFWriteDirectory(TIFF *);
+extern	int TIFFCheckpointDirectory(TIFF *);
+extern	int TIFFRewriteDirectory(TIFF *);
+extern	int TIFFReassignTagToIgnore(enum TIFFIgnoreSense, int);
+
+#if defined(c_plusplus) || defined(__cplusplus)
+extern	void TIFFPrintDirectory(TIFF*, FILE*, long = 0);
+extern	int TIFFReadScanline(TIFF*, tdata_t, uint32, tsample_t = 0);
+extern	int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t = 0);
+extern	int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int = 0);
+extern	int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*,
+				      int = ORIENTATION_BOTLEFT, int = 0);
+#else
+extern	void TIFFPrintDirectory(TIFF*, FILE*, long);
+extern	int TIFFReadScanline(TIFF*, tdata_t, uint32, tsample_t);
+extern	int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t);
+extern	int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int);
+extern	int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*, int, int);
+#endif
+
+extern	int TIFFReadRGBAStrip(TIFF*, tstrip_t, uint32 * );
+extern	int TIFFReadRGBATile(TIFF*, uint32, uint32, uint32 * );
+extern	int TIFFRGBAImageOK(TIFF*, char [1024]);
+extern	int TIFFRGBAImageBegin(TIFFRGBAImage*, TIFF*, int, char [1024]);
+extern	int TIFFRGBAImageGet(TIFFRGBAImage*, uint32*, uint32, uint32);
+extern	void TIFFRGBAImageEnd(TIFFRGBAImage*);
+extern	TIFF* TIFFOpen(const char*, const char*);
+# ifdef __WIN32__
+extern	TIFF* TIFFOpenW(const wchar_t*, const char*);
+# endif /* __WIN32__ */
+extern	TIFF* TIFFFdOpen(int, const char*, const char*);
+extern	TIFF* TIFFClientOpen(const char*, const char*,
+	    thandle_t,
+	    TIFFReadWriteProc, TIFFReadWriteProc,
+	    TIFFSeekProc, TIFFCloseProc,
+	    TIFFSizeProc,
+	    TIFFMapFileProc, TIFFUnmapFileProc);
+extern	const char* TIFFFileName(TIFF*);
+extern	const char* TIFFSetFileName(TIFF*, const char *);
+extern	void TIFFError(const char*, const char*, ...);
+extern	void TIFFErrorExt(thandle_t, const char*, const char*, ...);
+extern	void TIFFWarning(const char*, const char*, ...);
+extern	void TIFFWarningExt(thandle_t, const char*, const char*, ...);
+extern	TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
+extern	TIFFErrorHandlerExt TIFFSetErrorHandlerExt(TIFFErrorHandlerExt);
+extern	TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
+extern	TIFFErrorHandlerExt TIFFSetWarningHandlerExt(TIFFErrorHandlerExt);
+extern	TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc);
+extern	ttile_t TIFFComputeTile(TIFF*, uint32, uint32, uint32, tsample_t);
+extern	int TIFFCheckTile(TIFF*, uint32, uint32, uint32, tsample_t);
+extern	ttile_t TIFFNumberOfTiles(TIFF*);
+extern	tsize_t TIFFReadTile(TIFF*,
+	    tdata_t, uint32, uint32, uint32, tsample_t);
+extern	tsize_t TIFFWriteTile(TIFF*,
+	    tdata_t, uint32, uint32, uint32, tsample_t);
+extern	tstrip_t TIFFComputeStrip(TIFF*, uint32, tsample_t);
+extern	tstrip_t TIFFNumberOfStrips(TIFF*);
+extern	tsize_t TIFFReadEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
+extern	tsize_t TIFFReadRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
+extern	tsize_t TIFFReadEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
+extern	tsize_t TIFFReadRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
+extern	tsize_t TIFFWriteEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
+extern	tsize_t TIFFWriteRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
+extern	tsize_t TIFFWriteEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
+extern	tsize_t TIFFWriteRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
+extern	int TIFFDataWidth(TIFFDataType);    /* table of tag datatype widths */
+extern	void TIFFSetWriteOffset(TIFF*, toff_t);
+extern	void TIFFSwabShort(uint16*);
+extern	void TIFFSwabLong(uint32*);
+extern	void TIFFSwabDouble(double*);
+extern	void TIFFSwabArrayOfShort(uint16*, unsigned long);
+extern	void TIFFSwabArrayOfTriples(uint8*, unsigned long);
+extern	void TIFFSwabArrayOfLong(uint32*, unsigned long);
+extern	void TIFFSwabArrayOfDouble(double*, unsigned long);
+extern	void TIFFReverseBits(unsigned char *, unsigned long);
+extern	const unsigned char* TIFFGetBitRevTable(int);
+
+#ifdef LOGLUV_PUBLIC
+#define U_NEU		0.210526316
+#define V_NEU		0.473684211
+#define UVSCALE		410.
+extern	double LogL16toY(int);
+extern	double LogL10toY(int);
+extern	void XYZtoRGB24(float*, uint8*);
+extern	int uv_decode(double*, double*, int);
+extern	void LogLuv24toXYZ(uint32, float*);
+extern	void LogLuv32toXYZ(uint32, float*);
+#if defined(c_plusplus) || defined(__cplusplus)
+extern	int LogL16fromY(double, int = SGILOGENCODE_NODITHER);
+extern	int LogL10fromY(double, int = SGILOGENCODE_NODITHER);
+extern	int uv_encode(double, double, int = SGILOGENCODE_NODITHER);
+extern	uint32 LogLuv24fromXYZ(float*, int = SGILOGENCODE_NODITHER);
+extern	uint32 LogLuv32fromXYZ(float*, int = SGILOGENCODE_NODITHER);
+#else
+extern	int LogL16fromY(double, int);
+extern	int LogL10fromY(double, int);
+extern	int uv_encode(double, double, int);
+extern	uint32 LogLuv24fromXYZ(float*, int);
+extern	uint32 LogLuv32fromXYZ(float*, int);
+#endif
+#endif /* LOGLUV_PUBLIC */
+    
+extern int TIFFCIELabToRGBInit(TIFFCIELabToRGB*, TIFFDisplay *, float*);
+extern void TIFFCIELabToXYZ(TIFFCIELabToRGB *, uint32, int32, int32,
+			    float *, float *, float *);
+extern void TIFFXYZToRGB(TIFFCIELabToRGB *, float, float, float,
+			 uint32 *, uint32 *, uint32 *);
+
+extern int TIFFYCbCrToRGBInit(TIFFYCbCrToRGB*, float*, float*);
+extern void TIFFYCbCrtoRGB(TIFFYCbCrToRGB *, uint32, int32, int32,
+			   uint32 *, uint32 *, uint32 *);
+
+#if defined(c_plusplus) || defined(__cplusplus)
+}
+#endif
+
+#endif /* _TIFFIO_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tiffiop.h b/src/libtiff/tiffiop.h
new file mode 100644
index 0000000..a0e5856
--- /dev/null
+++ b/src/libtiff/tiffiop.h
@@ -0,0 +1,323 @@
+/* $Id: tiffiop.h,v 1.1 2008/10/17 06:16:07 scuri Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and 
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
+ * 
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _TIFFIOP_
+#define	_TIFFIOP_
+/*
+ * ``Library-private'' definitions.
+ */
+
+#include "tif_config.h"
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+
+#ifdef HAVE_ASSERT_H
+# include <assert.h>
+#else
+# define assert(x) 
+#endif
+
+#ifdef HAVE_SEARCH_H
+# include <search.h>
+#else
+extern void *lfind(const void *, const void *, size_t *, size_t,
+		   int (*)(const void *, const void *));
+#endif
+
+#include "tiffio.h"
+#include "tif_dir.h"
+
+#ifndef STRIP_SIZE_DEFAULT
+# define STRIP_SIZE_DEFAULT 8192
+#endif
+
+#define    streq(a,b)      (strcmp(a,b) == 0)
+
+#ifndef TRUE
+#define	TRUE	1
+#define	FALSE	0
+#endif
+
+typedef struct client_info {
+    struct client_info *next;
+    void      *data;
+    char      *name;
+} TIFFClientInfoLink;
+
+/*
+ * Typedefs for ``method pointers'' used internally.
+ */
+typedef	unsigned char tidataval_t;	/* internal image data value type */
+typedef	tidataval_t* tidata_t;		/* reference to internal image data */
+
+typedef	void (*TIFFVoidMethod)(TIFF*);
+typedef	int (*TIFFBoolMethod)(TIFF*);
+typedef	int (*TIFFPreMethod)(TIFF*, tsample_t);
+typedef	int (*TIFFCodeMethod)(TIFF*, tidata_t, tsize_t, tsample_t);
+typedef	int (*TIFFSeekMethod)(TIFF*, uint32);
+typedef	void (*TIFFPostMethod)(TIFF*, tidata_t, tsize_t);
+typedef	uint32 (*TIFFStripMethod)(TIFF*, uint32);
+typedef	void (*TIFFTileMethod)(TIFF*, uint32*, uint32*);
+
+struct tiff {
+	char*		tif_name;	/* name of open file */
+	int		tif_fd;		/* open file descriptor */
+	int		tif_mode;	/* open mode (O_*) */
+	uint32		tif_flags;
+#define	TIFF_FILLORDER		0x0003	/* natural bit fill order for machine */
+#define	TIFF_DIRTYHEADER	0x0004	/* header must be written on close */
+#define	TIFF_DIRTYDIRECT	0x0008	/* current directory must be written */
+#define	TIFF_BUFFERSETUP	0x0010	/* data buffers setup */
+#define	TIFF_CODERSETUP		0x0020	/* encoder/decoder setup done */
+#define	TIFF_BEENWRITING	0x0040	/* written 1+ scanlines to file */
+#define	TIFF_SWAB		0x0080	/* byte swap file information */
+#define	TIFF_NOBITREV		0x0100	/* inhibit bit reversal logic */
+#define	TIFF_MYBUFFER		0x0200	/* my raw data buffer; free on close */
+#define	TIFF_ISTILED		0x0400	/* file is tile, not strip- based */
+#define	TIFF_MAPPED		0x0800	/* file is mapped into memory */
+#define	TIFF_POSTENCODE		0x1000	/* need call to postencode routine */
+#define	TIFF_INSUBIFD		0x2000	/* currently writing a subifd */
+#define	TIFF_UPSAMPLED		0x4000	/* library is doing data up-sampling */ 
+#define	TIFF_STRIPCHOP		0x8000	/* enable strip chopping support */
+#define	TIFF_HEADERONLY		0x10000	/* read header only, do not process */
+					/* the first directory */
+	toff_t		tif_diroff;	/* file offset of current directory */
+	toff_t		tif_nextdiroff;	/* file offset of following directory */
+	toff_t*		tif_dirlist;	/* list of offsets to already seen */
+					/* directories to prevent IFD looping */
+	uint16		tif_dirnumber;  /* number of already seen directories */
+	TIFFDirectory	tif_dir;	/* internal rep of current directory */
+	TIFFHeader	tif_header;	/* file's header block */
+	const int*	tif_typeshift;	/* data type shift counts */
+	const long*	tif_typemask;	/* data type masks */
+	uint32		tif_row;	/* current scanline */
+	tdir_t		tif_curdir;	/* current directory (index) */
+	tstrip_t	tif_curstrip;	/* current strip for read/write */
+	toff_t		tif_curoff;	/* current offset for read/write */
+	toff_t		tif_dataoff;	/* current offset for writing dir */
+/* SubIFD support */
+	uint16		tif_nsubifd;	/* remaining subifds to write */
+	toff_t		tif_subifdoff;	/* offset for patching SubIFD link */
+/* tiling support */
+	uint32 		tif_col;	/* current column (offset by row too) */
+	ttile_t		tif_curtile;	/* current tile for read/write */
+	tsize_t		tif_tilesize;	/* # of bytes in a tile */
+/* compression scheme hooks */
+	int		tif_decodestatus;
+	TIFFBoolMethod	tif_setupdecode;/* called once before predecode */
+	TIFFPreMethod	tif_predecode;	/* pre- row/strip/tile decoding */
+	TIFFBoolMethod	tif_setupencode;/* called once before preencode */
+	int		tif_encodestatus;
+	TIFFPreMethod	tif_preencode;	/* pre- row/strip/tile encoding */
+	TIFFBoolMethod	tif_postencode;	/* post- row/strip/tile encoding */
+	TIFFCodeMethod	tif_decoderow;	/* scanline decoding routine */
+	TIFFCodeMethod	tif_encoderow;	/* scanline encoding routine */
+	TIFFCodeMethod	tif_decodestrip;/* strip decoding routine */
+	TIFFCodeMethod	tif_encodestrip;/* strip encoding routine */
+	TIFFCodeMethod	tif_decodetile;	/* tile decoding routine */
+	TIFFCodeMethod	tif_encodetile;	/* tile encoding routine */
+	TIFFVoidMethod	tif_close;	/* cleanup-on-close routine */
+	TIFFSeekMethod	tif_seek;	/* position within a strip routine */
+	TIFFVoidMethod	tif_cleanup;	/* cleanup state routine */
+	TIFFStripMethod	tif_defstripsize;/* calculate/constrain strip size */
+	TIFFTileMethod	tif_deftilesize;/* calculate/constrain tile size */
+	tidata_t	tif_data;	/* compression scheme private data */
+/* input/output buffering */
+	tsize_t		tif_scanlinesize;/* # of bytes in a scanline */
+	tsize_t		tif_scanlineskew;/* scanline skew for reading strips */
+	tidata_t	tif_rawdata;	/* raw data buffer */
+	tsize_t		tif_rawdatasize;/* # of bytes in raw data buffer */
+	tidata_t	tif_rawcp;	/* current spot in raw buffer */
+	tsize_t		tif_rawcc;	/* bytes unread from raw buffer */
+/* memory-mapped file support */
+	tidata_t	tif_base;	/* base of mapped file */
+	toff_t		tif_size;	/* size of mapped file region (bytes) */
+	TIFFMapFileProc	tif_mapproc;	/* map file method */
+	TIFFUnmapFileProc tif_unmapproc;/* unmap file method */
+/* input/output callback methods */
+	thandle_t	tif_clientdata;	/* callback parameter */
+	TIFFReadWriteProc tif_readproc;	/* read method */
+	TIFFReadWriteProc tif_writeproc;/* write method */
+	TIFFSeekProc	tif_seekproc;	/* lseek method */
+	TIFFCloseProc	tif_closeproc;	/* close method */
+	TIFFSizeProc	tif_sizeproc;	/* filesize method */
+/* post-decoding support */
+	TIFFPostMethod	tif_postdecode;	/* post decoding routine */
+/* tag support */
+	TIFFFieldInfo**	tif_fieldinfo;	/* sorted table of registered tags */
+	size_t		tif_nfields;	/* # entries in registered tag table */
+	const TIFFFieldInfo *tif_foundfield;/* cached pointer to already found tag */
+        TIFFTagMethods  tif_tagmethods; /* tag get/set/print routines */
+        TIFFClientInfoLink *tif_clientinfo; /* extra client information. */
+};
+
+#define	isPseudoTag(t)	(t > 0xffff)	/* is tag value normal or pseudo */
+
+#define	isTiled(tif)	(((tif)->tif_flags & TIFF_ISTILED) != 0)
+#define	isMapped(tif)	(((tif)->tif_flags & TIFF_MAPPED) != 0)
+#define	isFillOrder(tif, o)	(((tif)->tif_flags & (o)) != 0)
+#define	isUpSampled(tif)	(((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
+#define	TIFFReadFile(tif, buf, size) \
+	((*(tif)->tif_readproc)((tif)->tif_clientdata,buf,size))
+#define	TIFFWriteFile(tif, buf, size) \
+	((*(tif)->tif_writeproc)((tif)->tif_clientdata,buf,size))
+#define	TIFFSeekFile(tif, off, whence) \
+	((*(tif)->tif_seekproc)((tif)->tif_clientdata,(toff_t)(off),whence))
+#define	TIFFCloseFile(tif) \
+	((*(tif)->tif_closeproc)((tif)->tif_clientdata))
+#define	TIFFGetFileSize(tif) \
+	((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
+#define	TIFFMapFileContents(tif, paddr, psize) \
+	((*(tif)->tif_mapproc)((tif)->tif_clientdata,paddr,psize))
+#define	TIFFUnmapFileContents(tif, addr, size) \
+	((*(tif)->tif_unmapproc)((tif)->tif_clientdata,addr,size))
+
+/*
+ * Default Read/Seek/Write definitions.
+ */
+#ifndef ReadOK
+#define	ReadOK(tif, buf, size) \
+	(TIFFReadFile(tif, (tdata_t) buf, (tsize_t)(size)) == (tsize_t)(size))
+#endif
+#ifndef SeekOK
+#define	SeekOK(tif, off) \
+	(TIFFSeekFile(tif, (toff_t) off, SEEK_SET) == (toff_t) off)
+#endif
+#ifndef WriteOK
+#define	WriteOK(tif, buf, size) \
+	(TIFFWriteFile(tif, (tdata_t) buf, (tsize_t) size) == (tsize_t) size)
+#endif
+
+/* NB: the uint32 casts are to silence certain ANSI-C compilers */
+#define TIFFhowmany(x, y) ((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y)))
+#define TIFFhowmany8(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
+#define	TIFFroundup(x, y) (TIFFhowmany(x,y)*(y))
+
+#define TIFFmax(A,B) ((A)>(B)?(A):(B))
+#define TIFFmin(A,B) ((A)<(B)?(A):(B))
+
+#define TIFFArrayCount(a) (sizeof (a) / sizeof ((a)[0]))
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+extern	int _TIFFgetMode(const char*, const char*);
+extern	int _TIFFNoRowEncode(TIFF*, tidata_t, tsize_t, tsample_t);
+extern	int _TIFFNoStripEncode(TIFF*, tidata_t, tsize_t, tsample_t);
+extern	int _TIFFNoTileEncode(TIFF*, tidata_t, tsize_t, tsample_t);
+extern	int _TIFFNoRowDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+extern	int _TIFFNoStripDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+extern	int _TIFFNoTileDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+extern	void _TIFFNoPostDecode(TIFF*, tidata_t, tsize_t);
+extern  int  _TIFFNoPreCode (TIFF*, tsample_t); 
+extern	int _TIFFNoSeek(TIFF*, uint32);
+extern	void _TIFFSwab16BitData(TIFF*, tidata_t, tsize_t);
+extern	void _TIFFSwab24BitData(TIFF*, tidata_t, tsize_t);
+extern	void _TIFFSwab32BitData(TIFF*, tidata_t, tsize_t);
+extern	void _TIFFSwab64BitData(TIFF*, tidata_t, tsize_t);
+extern	int TIFFFlushData1(TIFF*);
+extern	int TIFFDefaultDirectory(TIFF*);
+extern	void _TIFFSetDefaultCompressionState(TIFF*);
+extern	int TIFFSetCompressionScheme(TIFF*, int);
+extern	int TIFFSetDefaultCompressionState(TIFF*);
+extern	uint32 _TIFFDefaultStripSize(TIFF*, uint32);
+extern	void _TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
+extern	int _TIFFDataSize(TIFFDataType);
+
+extern	void _TIFFsetByteArray(void**, void*, uint32);
+extern	void _TIFFsetString(char**, char*);
+extern	void _TIFFsetShortArray(uint16**, uint16*, uint32);
+extern	void _TIFFsetLongArray(uint32**, uint32*, uint32);
+extern	void _TIFFsetFloatArray(float**, float*, uint32);
+extern	void _TIFFsetDoubleArray(double**, double*, uint32);
+
+extern	void _TIFFprintAscii(FILE*, const char*);
+extern	void _TIFFprintAsciiTag(FILE*, const char*, const char*);
+
+extern	TIFFErrorHandler _TIFFwarningHandler;
+extern	TIFFErrorHandler _TIFFerrorHandler;
+extern	TIFFErrorHandlerExt _TIFFwarningHandlerExt;
+extern	TIFFErrorHandlerExt _TIFFerrorHandlerExt;
+
+extern	tdata_t _TIFFCheckMalloc(TIFF*, size_t, size_t, const char*);
+
+extern	int TIFFInitDumpMode(TIFF*, int);
+#ifdef PACKBITS_SUPPORT
+extern	int TIFFInitPackBits(TIFF*, int);
+#endif
+#ifdef CCITT_SUPPORT
+extern	int TIFFInitCCITTRLE(TIFF*, int), TIFFInitCCITTRLEW(TIFF*, int);
+extern	int TIFFInitCCITTFax3(TIFF*, int), TIFFInitCCITTFax4(TIFF*, int);
+#endif
+#ifdef THUNDER_SUPPORT
+extern	int TIFFInitThunderScan(TIFF*, int);
+#endif
+#ifdef NEXT_SUPPORT
+extern	int TIFFInitNeXT(TIFF*, int);
+#endif
+#ifdef LZW_SUPPORT
+extern	int TIFFInitLZW(TIFF*, int);
+#endif
+#ifdef OJPEG_SUPPORT
+extern	int TIFFInitOJPEG(TIFF*, int);
+#endif
+#ifdef JPEG_SUPPORT
+extern	int TIFFInitJPEG(TIFF*, int);
+#endif
+#ifdef JBIG_SUPPORT
+extern	int TIFFInitJBIG(TIFF*, int);
+#endif
+#ifdef ZIP_SUPPORT
+extern	int TIFFInitZIP(TIFF*, int);
+#endif
+#ifdef PIXARLOG_SUPPORT
+extern	int TIFFInitPixarLog(TIFF*, int);
+#endif
+#ifdef LOGLUV_SUPPORT
+extern	int TIFFInitSGILog(TIFF*, int);
+#endif
+#ifdef VMS
+extern	const TIFFCodec _TIFFBuiltinCODECS[];
+#else
+extern	TIFFCodec _TIFFBuiltinCODECS[];
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* _TIFFIOP_ */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
diff --git a/src/libtiff/tiffvers.h b/src/libtiff/tiffvers.h
new file mode 100644
index 0000000..9744f8d
--- /dev/null
+++ b/src/libtiff/tiffvers.h
@@ -0,0 +1,9 @@
+#define TIFFLIB_VERSION_STR "LIBTIFF, Version 3.8.2\nCopyright (c) 1988-1996 Sam Leffler\nCopyright (c) 1991-1996 Silicon Graphics, Inc."
+/*
+ * This define can be used in code that requires
+ * compilation-related definitions specific to a
+ * version or versions of the library.  Runtime
+ * version checking should be done based on the
+ * string returned by TIFFGetVersion.
+ */
+#define TIFFLIB_VERSION 20060323
diff --git a/src/libtiff/uvcode.h b/src/libtiff/uvcode.h
new file mode 100644
index 0000000..5b2d7d7
--- /dev/null
+++ b/src/libtiff/uvcode.h
@@ -0,0 +1,173 @@
+/* Version 1.0 generated April 7, 1997 by Greg Ward Larson, SGI */
+#define UV_SQSIZ	(float)0.003500
+#define UV_NDIVS	16289
+#define UV_VSTART	(float)0.016940
+#define UV_NVS		163
+static struct {
+	float	ustart;
+	short	nus, ncum;
+}	uv_row[UV_NVS] = {
+	{ (float)0.247663,	4,	0 },
+	{ (float)0.243779,	6,	4 },
+	{ (float)0.241684,	7,	10 },
+	{ (float)0.237874,	9,	17 },
+	{ (float)0.235906,	10,	26 },
+	{ (float)0.232153,	12,	36 },
+	{ (float)0.228352,	14,	48 },
+	{ (float)0.226259,	15,	62 },
+	{ (float)0.222371,	17,	77 },
+	{ (float)0.220410,	18,	94 },
+	{ (float)0.214710,	21,	112 },
+	{ (float)0.212714,	22,	133 },
+	{ (float)0.210721,	23,	155 },
+	{ (float)0.204976,	26,	178 },
+	{ (float)0.202986,	27,	204 },
+	{ (float)0.199245,	29,	231 },
+	{ (float)0.195525,	31,	260 },
+	{ (float)0.193560,	32,	291 },
+	{ (float)0.189878,	34,	323 },
+	{ (float)0.186216,	36,	357 },
+	{ (float)0.186216,	36,	393 },
+	{ (float)0.182592,	38,	429 },
+	{ (float)0.179003,	40,	467 },
+	{ (float)0.175466,	42,	507 },
+	{ (float)0.172001,	44,	549 },
+	{ (float)0.172001,	44,	593 },
+	{ (float)0.168612,	46,	637 },
+	{ (float)0.168612,	46,	683 },
+	{ (float)0.163575,	49,	729 },
+	{ (float)0.158642,	52,	778 },
+	{ (float)0.158642,	52,	830 },
+	{ (float)0.158642,	52,	882 },
+	{ (float)0.153815,	55,	934 },
+	{ (float)0.153815,	55,	989 },
+	{ (float)0.149097,	58,	1044 },
+	{ (float)0.149097,	58,	1102 },
+	{ (float)0.142746,	62,	1160 },
+	{ (float)0.142746,	62,	1222 },
+	{ (float)0.142746,	62,	1284 },
+	{ (float)0.138270,	65,	1346 },
+	{ (float)0.138270,	65,	1411 },
+	{ (float)0.138270,	65,	1476 },
+	{ (float)0.132166,	69,	1541 },
+	{ (float)0.132166,	69,	1610 },
+	{ (float)0.126204,	73,	1679 },
+	{ (float)0.126204,	73,	1752 },
+	{ (float)0.126204,	73,	1825 },
+	{ (float)0.120381,	77,	1898 },
+	{ (float)0.120381,	77,	1975 },
+	{ (float)0.120381,	77,	2052 },
+	{ (float)0.120381,	77,	2129 },
+	{ (float)0.112962,	82,	2206 },
+	{ (float)0.112962,	82,	2288 },
+	{ (float)0.112962,	82,	2370 },
+	{ (float)0.107450,	86,	2452 },
+	{ (float)0.107450,	86,	2538 },
+	{ (float)0.107450,	86,	2624 },
+	{ (float)0.107450,	86,	2710 },
+	{ (float)0.100343,	91,	2796 },
+	{ (float)0.100343,	91,	2887 },
+	{ (float)0.100343,	91,	2978 },
+	{ (float)0.095126,	95,	3069 },
+	{ (float)0.095126,	95,	3164 },
+	{ (float)0.095126,	95,	3259 },
+	{ (float)0.095126,	95,	3354 },
+	{ (float)0.088276,	100,	3449 },
+	{ (float)0.088276,	100,	3549 },
+	{ (float)0.088276,	100,	3649 },
+	{ (float)0.088276,	100,	3749 },
+	{ (float)0.081523,	105,	3849 },
+	{ (float)0.081523,	105,	3954 },
+	{ (float)0.081523,	105,	4059 },
+	{ (float)0.081523,	105,	4164 },
+	{ (float)0.074861,	110,	4269 },
+	{ (float)0.074861,	110,	4379 },
+	{ (float)0.074861,	110,	4489 },
+	{ (float)0.074861,	110,	4599 },
+	{ (float)0.068290,	115,	4709 },
+	{ (float)0.068290,	115,	4824 },
+	{ (float)0.068290,	115,	4939 },
+	{ (float)0.068290,	115,	5054 },
+	{ (float)0.063573,	119,	5169 },
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author	scuri <scuri>	2008-10-17 06:10:15 +0000
committer	scuri <scuri>	2008-10-17 06:10:15 +0000
commit	5a422aba704c375a307a902bafe658342e209906 (patch)
tree	5005011e086bb863d8fb587ad3319bbec59b2447 /src/libtiff