This commit was manufactured by cvs2svn to create tag 'start'.start

1 files changed, 488 insertions, 0 deletions

diff --git a/libopenjpeg/pi.c b/libopenjpeg/pi.c
new file mode 100644
index 00000000..eca2c451
--- /dev/null
+++ b/libopenjpeg/pi.c
@@ -0,0 +1,488 @@
+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2003, Yannick Verschueren
+ * Copyright (c) 2003,  Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "pi.h"
+#include "int.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+
+/* <summary> */
+/* Create a packet iterator.   */
+/* </summary> */
+pi_iterator_t *pi_create(j2k_image_t * img, j2k_cp_t * cp, int tileno)
+{
+	int p, q;
+	int compno, resno, pino, layno, precno;
+	int maxres = 0;
+	pi_iterator_t *pi;
+	j2k_tcp_t *tcp;
+	j2k_tccp_t *tccp;
+
+	tcp = &cp->tcps[tileno];
+	pi =
+		(pi_iterator_t *) malloc((tcp->numpocs + 1) * sizeof(pi_iterator_t));
+
+	for (pino = 0; pino < tcp->numpocs + 1; pino++) {	/* change */
+		p = tileno % cp->tw;
+		q = tileno / cp->tw;
+
+		/*    pi->tx0=int_max(cp->tx0+p*cp->tdx, img->x0);
+		   pi->ty0=int_max(cp->ty0+q*cp->tdy, img->y0);
+		   pi->tx1=int_min(cp->tx0+(p+1)*cp->tdx, img->x1);
+		   pi->ty1=int_min(cp->ty0+(q+1)*cp->tdy, img->y1);
+		   pi->numcomps=img->numcomps;
+		   pi->comps=(pi_comp_t*)malloc(img->numcomps*sizeof(pi_comp_t)); */
+
+		pi[pino].tx0 = int_max(cp->tx0 + p * cp->tdx, img->x0);
+		pi[pino].ty0 = int_max(cp->ty0 + q * cp->tdy, img->y0);
+		pi[pino].tx1 = int_min(cp->tx0 + (p + 1) * cp->tdx, img->x1);
+		pi[pino].ty1 = int_min(cp->ty0 + (q + 1) * cp->tdy, img->y1);
+		pi[pino].numcomps = img->numcomps;
+		pi[pino].comps =
+			(pi_comp_t *) malloc(img->numcomps * sizeof(pi_comp_t));
+
+		for (compno = 0; compno < pi->numcomps; compno++) {
+			int tcx0, tcy0, tcx1, tcy1;
+			/* pi_comp_t *comp=&pi->comps[compno]; */
+			pi_comp_t *comp = &pi[pino].comps[compno];
+			tccp = &tcp->tccps[compno];
+			comp->dx = img->comps[compno].dx;
+			comp->dy = img->comps[compno].dy;
+			comp->numresolutions = tccp->numresolutions;
+			comp->resolutions =
+				(pi_resolution_t *) malloc(comp->numresolutions *
+																	 sizeof(pi_resolution_t));
+			tcx0 = int_ceildiv(pi->tx0, comp->dx);
+			tcy0 = int_ceildiv(pi->ty0, comp->dy);
+			tcx1 = int_ceildiv(pi->tx1, comp->dx);
+			tcy1 = int_ceildiv(pi->ty1, comp->dy);
+			if (comp->numresolutions > maxres) {
+				maxres = comp->numresolutions;
+			}
+			for (resno = 0; resno < comp->numresolutions; resno++) {
+				int levelno;
+				int rx0, ry0, rx1, ry1;
+				int px0, py0, px1, py1;
+				pi_resolution_t *res = &comp->resolutions[resno];
+				if (tccp->csty & J2K_CCP_CSTY_PRT) {
+					res->pdx = tccp->prcw[resno];
+					res->pdy = tccp->prch[resno];
+				} else {
+					res->pdx = 15;
+					res->pdy = 15;
+				}
+				levelno = comp->numresolutions - 1 - resno;
+				rx0 = int_ceildivpow2(tcx0, levelno);
+				ry0 = int_ceildivpow2(tcy0, levelno);
+				rx1 = int_ceildivpow2(tcx1, levelno);
+				ry1 = int_ceildivpow2(tcy1, levelno);
+				px0 = int_floordivpow2(rx0, res->pdx) << res->pdx;
+				py0 = int_floordivpow2(ry0, res->pdy) << res->pdy;
+				px1 = int_ceildivpow2(rx1, res->pdx) << res->pdx;
+				py1 = int_ceildivpow2(ry1, res->pdy) << res->pdy;
+				res->pw = (px1 - px0) >> res->pdx;
+				res->ph = (py1 - py0) >> res->pdy;
+			}
+		}
+
+		/*   pi->first=1;
+		   pi->poc.resno0=0;
+		   pi->poc.compno0=0;
+		   pi->poc.layno1=tcp->numlayers;
+		   pi->poc.resno1=maxres;
+		   pi->poc.compno1=img->numcomps;
+		   pi->poc.prg=tcp->prg; */
+
+		for (layno = 0; layno < 10; layno++) {
+			/* pi_comp_t *compo; */
+			/* pi_resolution_t *res; */
+			for (resno = 0; resno < 10; resno++) {
+				for (compno = 0; compno < 3; compno++) {
+					/* compo=&pi[pino].comps[compno]; */
+					/* res=&compo->resolutions[pi->resno]; */
+					for (precno = 0; precno < 99; precno++) {
+						pi[pino].include[layno][resno][compno][precno] = 0;
+					}
+				}
+			}
+		}
+
+		if (pino == tcp->numpocs) {
+			pi[pino].first = 1;
+			pi[pino].poc.resno0 = 0;
+			pi[pino].poc.compno0 = 0;
+			pi[pino].poc.layno1 = tcp->numlayers;
+			pi[pino].poc.resno1 = maxres;
+			pi[pino].poc.compno1 = img->numcomps;
+			pi[pino].poc.prg = tcp->prg;
+		} else {
+			pi[pino].first = 1;
+			pi[pino].poc.resno0 = tcp->pocs[pino].resno0;
+			pi[pino].poc.compno0 = tcp->pocs[pino].compno0;
+			pi[pino].poc.layno1 = tcp->pocs[pino].layno1;
+			pi[pino].poc.resno1 = tcp->pocs[pino].resno1;
+			pi[pino].poc.compno1 = tcp->pocs[pino].compno1;
+			pi[pino].poc.prg = tcp->pocs[pino].prg;
+		}
+	}
+	return pi;
+}
+
+/* <summary> */
+/* Get next packet in layer=resolution-component-precinct order.   */
+/* </summary> */
+int pi_next_lrcp(pi_iterator_t * pi)
+{
+	pi_comp_t *comp;
+	pi_resolution_t *res;
+
+	if (!pi->first) {
+		comp = &pi->comps[pi->compno];
+		res = &comp->resolutions[pi->resno];
+		goto skip;
+	} else {
+		pi->first = 0;
+	}
+	for (pi->layno = 0; pi->layno < pi->poc.layno1; pi->layno++) {
+		for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1;
+				 pi->resno++) {
+			for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
+					 pi->compno++) {
+				comp = &pi->comps[pi->compno];
+				if (pi->resno >= comp->numresolutions) {
+
+					continue;
+				}
+				res = &comp->resolutions[pi->resno];
+				for (pi->precno = 0; pi->precno < res->pw * res->ph; pi->precno++) {
+					if (!pi->include[pi->layno][pi->resno][pi->compno][pi->precno]) {
+						pi->include[pi->layno][pi->resno][pi->compno][pi->precno] = 1;
+						return 1;
+					}
+				skip:;
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+/* <summary> */
+/* Get next packet in resolution-layer-component-precinct order.   */
+/* </summary> */
+int pi_next_rlcp(pi_iterator_t * pi)
+{
+	pi_comp_t *comp;
+	pi_resolution_t *res;
+	if (!pi->first) {
+		comp = &pi->comps[pi->compno];
+		res = &comp->resolutions[pi->resno];
+		goto skip;
+	} else {
+		pi->first = 0;
+	}
+	for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
+		for (pi->layno = 0; pi->layno < pi->poc.layno1; pi->layno++) {
+			for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
+					 pi->compno++) {
+				comp = &pi->comps[pi->compno];
+				if (pi->resno >= comp->numresolutions) {
+					continue;
+				}
+				res = &comp->resolutions[pi->resno];
+				for (pi->precno = 0; pi->precno < res->pw * res->ph; pi->precno++) {
+					if (!pi->include[pi->layno][pi->resno][pi->compno][pi->precno]) {
+						pi->include[pi->layno][pi->resno][pi->compno][pi->precno] = 1;
+						return 1;
+					}
+				skip:;
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+/* <summary> */
+/* Get next packet in resolution-precinct-component-layer order.   */
+/* </summary> */
+int pi_next_rpcl(pi_iterator_t * pi)
+{
+	pi_comp_t *comp;
+	pi_resolution_t *res;
+	if (!pi->first) {
+		goto skip;
+	} else {
+		int compno, resno;
+		pi->first = 0;
+		pi->dx = 0;
+		pi->dy = 0;
+		for (compno = 0; compno < pi->numcomps; compno++) {
+			comp = &pi->comps[compno];
+			for (resno = 0; resno < comp->numresolutions; resno++) {
+				int dx, dy;
+				res = &comp->resolutions[resno];
+				dx =
+					comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
+				dy =
+					comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
+				pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
+				pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
+			}
+		}
+	}
+	for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
+		for (pi->y = pi->ty0; pi->y < pi->ty1;
+				 pi->y += pi->dy - (pi->y % pi->dy)) {
+			for (pi->x = pi->tx0; pi->x < pi->tx1;
+					 pi->x += pi->dx - (pi->x % pi->dx)) {
+				for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
+						 pi->compno++) {
+					int levelno;
+					int trx0, try0;
+					int rpx, rpy;
+					int prci, prcj;
+					comp = &pi->comps[pi->compno];
+					if (pi->resno >= comp->numresolutions) {
+						continue;
+					}
+					res = &comp->resolutions[pi->resno];
+					levelno = comp->numresolutions - 1 - pi->resno;
+					trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
+					try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
+					rpx = res->pdx + levelno;
+					rpy = res->pdy + levelno;
+					if (!
+							(pi->x % (comp->dx << rpx) == 0
+							 || (pi->x == pi->tx0 && (trx0 << levelno) % (1 << rpx)))) {
+						continue;
+					}
+					if (!
+							(pi->y % (comp->dy << rpy) == 0
+							 || (pi->y == pi->ty0 && (try0 << levelno) % (1 << rpx)))) {
+						continue;
+					}
+					prci =
+						int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno),
+														 res->pdx) - int_floordivpow2(trx0, res->pdx);
+					prcj =
+						int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno),
+														 res->pdy) - int_floordivpow2(try0, res->pdy);
+					pi->precno = prci + prcj * res->pw;
+					for (pi->layno = 0; pi->layno < pi->poc.layno1; pi->layno++) {
+						if (!pi->include[pi->layno][pi->resno][pi->compno][pi->precno]) {
+							pi->include[pi->layno][pi->resno][pi->compno][pi->precno] =
+								1;
+							return 1;
+						}
+					skip:;
+					}
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+/* <summary> */
+/* Get next packet in precinct-component-resolution-layer order.   */
+/* </summary> */
+int pi_next_pcrl(pi_iterator_t * pi)
+{
+	pi_comp_t *comp;
+	pi_resolution_t *res;
+	if (!pi->first) {
+		comp = &pi->comps[pi->compno];
+		goto skip;
+	} else {
+		int compno, resno;
+		pi->first = 0;
+		pi->dx = 0;
+		pi->dy = 0;
+		for (compno = 0; compno < pi->numcomps; compno++) {
+			comp = &pi->comps[compno];
+			for (resno = 0; resno < comp->numresolutions; resno++) {
+				int dx, dy;
+				res = &comp->resolutions[resno];
+				dx =
+					comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
+				dy =
+					comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
+				pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
+				pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
+			}
+		}
+	}
+	for (pi->y = pi->ty0; pi->y < pi->ty1;
+			 pi->y += pi->dy - (pi->y % pi->dy)) {
+		for (pi->x = pi->tx0; pi->x < pi->tx1;
+				 pi->x += pi->dx - (pi->x % pi->dx)) {
+			for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
+					 pi->compno++) {
+				comp = &pi->comps[pi->compno];
+				for (pi->resno = pi->poc.resno0;
+						 pi->resno < int_min(pi->poc.resno1, comp->numresolutions);
+						 pi->resno++) {
+					int levelno;
+					int trx0, try0;
+					int rpx, rpy;
+					int prci, prcj;
+					res = &comp->resolutions[pi->resno];
+					levelno = comp->numresolutions - 1 - pi->resno;
+					trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
+					try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
+					rpx = res->pdx + levelno;
+					rpy = res->pdy + levelno;
+					if (!
+							(pi->x % (comp->dx << rpx) == 0
+							 || (pi->x == pi->tx0 && (trx0 << levelno) % (1 << rpx)))) {
+						continue;
+					}
+					if (!
+							(pi->y % (comp->dy << rpy) == 0
+							 || (pi->y == pi->ty0 && (try0 << levelno) % (1 << rpx)))) {
+						continue;
+					}
+					prci =
+						int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno),
+														 res->pdx) - int_floordivpow2(trx0, res->pdx);
+					prcj =
+						int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno),
+														 res->pdy) - int_floordivpow2(try0, res->pdy);
+					pi->precno = prci + prcj * res->pw;
+					for (pi->layno = 0; pi->layno < pi->poc.layno1; pi->layno++) {
+						if (!pi->include[pi->layno][pi->resno][pi->compno][pi->precno]) {
+							pi->include[pi->layno][pi->resno][pi->compno][pi->precno] =
+								1;
+							return 1;
+						}
+					skip:;
+					}
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+/* <summary> */
+/* Get next packet in component-precinct-resolution-layer order.   */
+/* </summary> */
+int pi_next_cprl(pi_iterator_t * pi)
+{
+	pi_comp_t *comp;
+	pi_resolution_t *res;
+	if (!pi->first) {
+		comp = &pi->comps[pi->compno];
+		goto skip;
+	} else {
+		pi->first = 0;
+	}
+	for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
+			 pi->compno++) {
+		int resno;
+		comp = &pi->comps[pi->compno];
+		pi->dx = 0;
+		pi->dy = 0;
+		for (resno = 0; resno < comp->numresolutions; resno++) {
+			int dx, dy;
+			res = &comp->resolutions[resno];
+			dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
+			dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
+			pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
+			pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
+		}
+		for (pi->y = pi->ty0; pi->y < pi->ty1;
+				 pi->y += pi->dy - (pi->y % pi->dy)) {
+			for (pi->x = pi->tx0; pi->x < pi->tx1;
+					 pi->x += pi->dx - (pi->x % pi->dx)) {
+				for (pi->resno = pi->poc.resno0;
+						 pi->resno < int_min(pi->poc.resno1, comp->numresolutions);
+						 pi->resno++) {
+					int levelno;
+					int trx0, try0;
+					int rpx, rpy;
+					int prci, prcj;
+					res = &comp->resolutions[pi->resno];
+					levelno = comp->numresolutions - 1 - pi->resno;
+					trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
+					try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
+					rpx = res->pdx + levelno;
+					rpy = res->pdy + levelno;
+					if (!
+							(pi->x % (comp->dx << rpx) == 0
+							 || (pi->x == pi->tx0 && (trx0 << levelno) % (1 << rpx)))) {
+						continue;
+					}
+					if (!
+							(pi->y % (comp->dy << rpy) == 0
+							 || (pi->y == pi->ty0 && (try0 << levelno) % (1 << rpx)))) {
+						continue;
+					}
+					prci =
+						int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno),
+														 res->pdx) - int_floordivpow2(trx0, res->pdx);
+					prcj =
+						int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno),
+														 res->pdy) - int_floordivpow2(try0, res->pdy);
+					pi->precno = prci + prcj * res->pw;
+					for (pi->layno = 0; pi->layno < pi->poc.layno1; pi->layno++) {
+						if (!pi->include[pi->layno][pi->resno][pi->compno][pi->precno]) {
+							pi->include[pi->layno][pi->resno][pi->compno][pi->precno] =
+								1;
+							return 1;
+						}
+					skip:;
+					}
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+/* <summary> */
+/* Get next packet.   */
+/* </summary> */
+int pi_next(pi_iterator_t * pi)
+{
+	switch (pi->poc.prg) {
+	case 0:
+		return pi_next_lrcp(pi);
+	case 1:
+		return pi_next_rlcp(pi);
+	case 2:
+		return pi_next_rpcl(pi);
+	case 3:
+		return pi_next_pcrl(pi);
+	case 4:
+		return pi_next_cprl(pi);
+	}
+	return 0;
+}