First commit - moving from LuaForge to SourceForge

1 files changed, 497 insertions, 0 deletions

diff --git a/src/libjasper/jpc/jpc_t1cod.c b/src/libjasper/jpc/jpc_t1cod.c
new file mode 100644
index 0000000..ea4d2b1
--- /dev/null
+++ b/src/libjasper/jpc/jpc_t1cod.c
@@ -0,0 +1,497 @@
+/*
+ * Copyright (c) 1999-2000 Image Power, Inc. and the University of
+ *   British Columbia.
+ * Copyright (c) 2001-2003 Michael David Adams.
+ * All rights reserved.
+ */
+
+/* __START_OF_JASPER_LICENSE__
+ * 
+ * JasPer License Version 2.0
+ * 
+ * Copyright (c) 2001-2006 Michael David Adams
+ * Copyright (c) 1999-2000 Image Power, Inc.
+ * Copyright (c) 1999-2000 The University of British Columbia
+ * 
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person (the
+ * "User") obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the
+ * following conditions:
+ * 
+ * 1.  The above copyright notices and this permission notice (which
+ * includes the disclaimer below) shall be included in all copies or
+ * substantial portions of the Software.
+ * 
+ * 2.  The name of a copyright holder shall not be used to endorse or
+ * promote products derived from the Software without specific prior
+ * written permission.
+ * 
+ * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
+ * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+ * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
+ * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
+ * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
+ * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
+ * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
+ * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
+ * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
+ * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
+ * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
+ * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
+ * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
+ * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
+ * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
+ * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
+ * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
+ * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
+ * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
+ * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
+ * 
+ * __END_OF_JASPER_LICENSE__
+ */
+
+/*
+ * $Id: jpc_t1cod.c,v 1.1 2008/10/17 06:15:00 scuri Exp $
+ */
+
+/******************************************************************************\
+* Includes.
+\******************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <math.h>
+
+#include "jasper/jas_types.h"
+#include "jasper/jas_math.h"
+
+#include "jpc_bs.h"
+#include "jpc_dec.h"
+#include "jpc_cs.h"
+#include "jpc_mqcod.h"
+#include "jpc_t1cod.h"
+#include "jpc_tsfb.h"
+
+double jpc_pow2i(int n);
+
+/******************************************************************************\
+* Global data.
+\******************************************************************************/
+
+int jpc_zcctxnolut[4 * 256];
+int jpc_spblut[256];
+int jpc_scctxnolut[256];
+int jpc_magctxnolut[4096];
+
+jpc_fix_t jpc_signmsedec[1 << JPC_NMSEDEC_BITS];
+jpc_fix_t jpc_refnmsedec[1 << JPC_NMSEDEC_BITS];
+jpc_fix_t jpc_signmsedec0[1 << JPC_NMSEDEC_BITS];
+jpc_fix_t jpc_refnmsedec0[1 << JPC_NMSEDEC_BITS];
+
+jpc_mqctx_t jpc_mqctxs[JPC_NUMCTXS];
+
+/******************************************************************************\
+*
+\******************************************************************************/
+
+void jpc_initmqctxs(void);
+
+/******************************************************************************\
+* Code.
+\******************************************************************************/
+
+int JPC_PASSTYPE(int passno)
+{
+	int passtype;
+	switch (passno % 3) {
+	case 0:
+		passtype = JPC_CLNPASS;
+		break;
+	case 1:
+		passtype = JPC_SIGPASS;
+		break;
+	case 2:
+		passtype = JPC_REFPASS;
+		break;
+	default:
+		passtype = -1;
+		assert(0);
+		break;
+	}
+	return passtype;
+}
+
+int JPC_NOMINALGAIN(int qmfbid, int numlvls, int lvlno, int orient)
+{
+	/* Avoid compiler warnings about unused parameters. */
+	numlvls = 0;
+
+if (qmfbid == JPC_COX_INS) {
+	return 0;
+}
+	assert(qmfbid == JPC_COX_RFT);
+	if (lvlno == 0) {
+		assert(orient == JPC_TSFB_LL);
+		return 0;
+	} else {
+		switch (orient) {
+		case JPC_TSFB_LH:
+		case JPC_TSFB_HL:
+			return 1;
+			break;
+		case JPC_TSFB_HH:
+			return 2;
+			break;
+		}
+	}
+	abort();
+}
+
+/******************************************************************************\
+* Coding pass related functions.
+\******************************************************************************/
+
+int JPC_SEGTYPE(int passno, int firstpassno, int bypass)
+{
+	int passtype;
+	if (bypass) {
+		passtype = JPC_PASSTYPE(passno);
+		if (passtype == JPC_CLNPASS) {
+			return JPC_SEG_MQ;
+		}
+		return ((passno < firstpassno + 10) ? JPC_SEG_MQ : JPC_SEG_RAW);
+	} else {
+		return JPC_SEG_MQ;
+	}
+}
+
+int JPC_SEGPASSCNT(int passno, int firstpassno, int numpasses, int bypass, int termall)
+{
+	int ret;
+	int passtype;
+
+	if (termall) {
+		ret = 1;
+	} else if (bypass) {
+		if (passno < firstpassno + 10) {
+			ret = 10 - (passno - firstpassno);
+		} else {
+			passtype = JPC_PASSTYPE(passno);
+			switch (passtype) {
+			case JPC_SIGPASS:
+				ret = 2;
+				break;
+			case JPC_REFPASS:
+				ret = 1;
+				break;
+			case JPC_CLNPASS:
+				ret = 1;
+				break;
+			default:
+				ret = -1;
+				assert(0);
+				break;
+			}
+		}
+	} else {
+		ret = JPC_PREC * 3 - 2;
+	}
+	ret = JAS_MIN(ret, numpasses - passno);
+	return ret;
+}
+
+int JPC_ISTERMINATED(int passno, int firstpassno, int numpasses, int termall,
+  int lazy)
+{
+	int ret;
+	int n;
+	if (passno - firstpassno == numpasses - 1) {
+		ret = 1;
+	} else {
+		n = JPC_SEGPASSCNT(passno, firstpassno, numpasses, lazy, termall);
+		ret = (n <= 1) ? 1 : 0;
+	}
+
+	return ret;
+}
+
+/******************************************************************************\
+* Lookup table code.
+\******************************************************************************/
+
+void jpc_initluts()
+{
+	int i;
+	int orient;
+	int refine;
+	float u;
+	float v;
+	float t;
+
+/* XXX - hack */
+jpc_initmqctxs();
+
+	for (orient = 0; orient < 4; ++orient) {
+		for (i = 0; i < 256; ++i) {
+			jpc_zcctxnolut[(orient << 8) | i] = jpc_getzcctxno(i, orient);
+		}
+	}
+
+	for (i = 0; i < 256; ++i) {
+		jpc_spblut[i] = jpc_getspb(i << 4);
+	}
+
+	for (i = 0; i < 256; ++i) {
+		jpc_scctxnolut[i] = jpc_getscctxno(i << 4);
+	}
+
+	for (refine = 0; refine < 2; ++refine) {
+		for (i = 0; i < 2048; ++i) {
+			jpc_magctxnolut[(refine << 11) + i] = jpc_getmagctxno((refine ? JPC_REFINE : 0) | i);
+		}
+	}
+
+	for (i = 0; i < (1 << JPC_NMSEDEC_BITS); ++i) {
+		t = i * jpc_pow2i(-JPC_NMSEDEC_FRACBITS);
+		u = t;
+		v = t - 1.5;
+		jpc_signmsedec[i] = jpc_dbltofix(floor((u * u - v * v) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
+/* XXX - this calc is not correct */
+		jpc_signmsedec0[i] = jpc_dbltofix(floor((u * u) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
+		u = t - 1.0;
+		if (i & (1 << (JPC_NMSEDEC_BITS - 1))) {
+			v = t - 1.5;
+		} else {
+			v = t - 0.5;
+		}
+		jpc_refnmsedec[i] = jpc_dbltofix(floor((u * u - v * v) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
+/* XXX - this calc is not correct */
+		jpc_refnmsedec0[i] = jpc_dbltofix(floor((u * u) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
+	}
+}
+
+jpc_fix_t jpc_getsignmsedec_func(jpc_fix_t x, int bitpos)
+{
+	jpc_fix_t y;
+	assert(!(x & (~JAS_ONES(bitpos + 1))));
+	y = jpc_getsignmsedec_macro(x, bitpos);
+	return y;
+}
+
+int jpc_getzcctxno(int f, int orient)
+{
+	int h;
+	int v;
+	int d;
+	int n;
+	int t;
+	int hv;
+
+	/* Avoid compiler warning. */
+	n = 0;
+
+	h = ((f & JPC_WSIG) != 0) + ((f & JPC_ESIG) != 0);
+	v = ((f & JPC_NSIG) != 0) + ((f & JPC_SSIG) != 0);
+	d = ((f & JPC_NWSIG) != 0) + ((f & JPC_NESIG) != 0) + ((f & JPC_SESIG) != 0) + ((f & JPC_SWSIG) != 0);
+	switch (orient) {
+	case JPC_TSFB_HL:
+		t = h;
+		h = v;
+		v = t;
+	case JPC_TSFB_LL:
+	case JPC_TSFB_LH:
+		if (!h) {
+			if (!v) {
+				if (!d) {
+					n = 0;
+				} else if (d == 1) {
+					n = 1;
+				} else {
+					n = 2;
+				}
+			} else if (v == 1) {
+				n = 3;
+			} else {
+				n = 4;
+			}
+		} else if (h == 1) {
+			if (!v) {
+				if (!d) {
+					n = 5;
+				} else {
+					n = 6;
+				}
+			} else {
+				n = 7;
+			}
+		} else {
+			n = 8;
+		}
+		break;
+	case JPC_TSFB_HH:
+		hv = h + v;
+		if (!d) {
+			if (!hv) {
+				n = 0;
+			} else if (hv == 1) {
+				n = 1;
+			} else {
+				n = 2;
+			}
+		} else if (d == 1) {
+			if (!hv) {
+				n = 3;
+			} else if (hv == 1) {
+				n = 4;
+			} else {
+				n = 5;
+			}
+		} else if (d == 2) {
+			if (!hv) {
+				n = 6;
+			} else {
+				n = 7;
+			}
+		} else {
+			n = 8;
+		}
+		break;
+	}
+	assert(n < JPC_NUMZCCTXS);
+	return JPC_ZCCTXNO + n;
+}
+
+int jpc_getspb(int f)
+{
+	int hc;
+	int vc;
+	int n;
+
+	hc = JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == JPC_ESIG) + ((f & (JPC_WSIG | JPC_WSGN)) == JPC_WSIG), 1) -
+	  JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == (JPC_ESIG | JPC_ESGN)) + ((f & (JPC_WSIG | JPC_WSGN)) == (JPC_WSIG | JPC_WSGN)), 1);
+	vc = JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == JPC_NSIG) + ((f & (JPC_SSIG | JPC_SSGN)) == JPC_SSIG), 1) -
+	  JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == (JPC_NSIG | JPC_NSGN)) + ((f & (JPC_SSIG | JPC_SSGN)) == (JPC_SSIG | JPC_SSGN)), 1);
+	if (!hc && !vc) {
+		n = 0;
+	} else {
+		n = (!(hc > 0 || (!hc && vc > 0)));
+	}
+	return n;
+}
+
+int jpc_getscctxno(int f)
+{
+	int hc;
+	int vc;
+	int n;
+
+	/* Avoid compiler warning. */
+	n = 0;
+
+	hc = JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == JPC_ESIG) + ((f & (JPC_WSIG | JPC_WSGN)) == JPC_WSIG),
+	  1) - JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == (JPC_ESIG | JPC_ESGN)) +
+	  ((f & (JPC_WSIG | JPC_WSGN)) == (JPC_WSIG | JPC_WSGN)), 1);
+	vc = JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == JPC_NSIG) + ((f & (JPC_SSIG | JPC_SSGN)) == JPC_SSIG),
+	  1) - JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == (JPC_NSIG | JPC_NSGN)) +
+	  ((f & (JPC_SSIG | JPC_SSGN)) == (JPC_SSIG | JPC_SSGN)), 1);
+	assert(hc >= -1 && hc <= 1 && vc >= -1 && vc <= 1);
+	if (hc < 0) {
+		hc = -hc;
+		vc = -vc;
+	}
+	if (!hc) {
+		if (vc == -1) {
+			n = 1;
+		} else if (!vc) {
+			n = 0;
+		} else {
+			n = 1;
+		}
+	} else if (hc == 1) {
+		if (vc == -1) {
+			n = 2;
+		} else if (!vc) {
+			n = 3;
+		} else {
+			n = 4;
+		}
+	}
+	assert(n < JPC_NUMSCCTXS);
+	return JPC_SCCTXNO + n;
+}
+
+int jpc_getmagctxno(int f)
+{
+	int n;
+
+	if (!(f & JPC_REFINE)) {
+		n = (f & (JPC_OTHSIGMSK)) ? 1 : 0;
+	} else {
+		n = 2;
+	}
+
+	assert(n < JPC_NUMMAGCTXS);
+	return JPC_MAGCTXNO + n;
+}
+
+void jpc_initctxs(jpc_mqctx_t *ctxs)
+{
+	jpc_mqctx_t *ctx;
+	int i;
+
+	ctx = ctxs;
+	for (i = 0; i < JPC_NUMCTXS; ++i) {
+		ctx->mps = 0;
+		switch (i) {
+		case JPC_UCTXNO:
+			ctx->ind = 46;
+			break;
+		case JPC_ZCCTXNO:
+			ctx->ind = 4;
+			break;
+		case JPC_AGGCTXNO:
+			ctx->ind = 3;
+			break;
+		default:
+			ctx->ind = 0;
+			break;
+		}
+		++ctx;
+	}
+}
+
+void jpc_initmqctxs()
+{
+	jpc_initctxs(jpc_mqctxs);
+}
+
+/* Calculate the real quantity exp2(n), where x is an integer. */
+double jpc_pow2i(int n)
+{
+	double x;
+	double a;
+
+	x = 1.0;
+	if (n < 0) {
+		a = 0.5;
+		n = -n;
+	} else {
+		a = 2.0;
+	}
+	while (--n >= 0) {
+		x *= a;
+	}
+	return x;
+}