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-rw-r--r--libopenjpeg/pi.c488
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diff --git a/libopenjpeg/pi.c b/libopenjpeg/pi.c
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+++ b/libopenjpeg/pi.c
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+/*
+ * 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;
+}
generated by cgit v1.2.3 (git 2.46.0) at 2026-04-06 09:46:49 +0000