First commit - moving from LuaForge to SourceForge

1 files changed, 1243 insertions, 0 deletions

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: */