/*
* Copyright (c) 2001-2002, David Janssens
- * Copyright (c) 2003, Yannick Verschueren
- * Copyright (c) 2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * Copyright (c) 2003-2004, Yannick Verschueren
+ * Copyright (c) 2003-2004, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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[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[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];
+
+/* <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;
+ 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[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[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;
+ }
+ }
+
+ tccp = &tcp->tccps[0];
+ pi[pino].step_p=1;
+ pi[pino].step_c=100*pi[pino].step_p;
+ pi[pino].step_r=img->numcomps*pi[pino].step_c;
+ pi[pino].step_l=maxres*pi[pino].step_r;
+
+ if (pino==0)
+ pi[pino].include=(short int*)calloc(img->numcomps*maxres*tcp->numlayers*100,sizeof(short int));
+ else
+ pi[pino].include=pi[pino-1].include;
+
+ /*if (pino == tcp->numpocs) {*/
+ if (tcp->POC == 0) {
+ 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 {
- res->pdx=15;
- res->pdy=15;
+ 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;
}
- 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;
- }
- }
-
- for (layno=0; layno<10; layno++)
- {
- for (resno=0; resno<10; resno++)
- {
- for (compno=0; compno<3; compno++)
- {
- 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;
+ }
+ 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];
+/* <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;
- for (pi->precno=0; pi->precno<res->pw*res->ph; pi->precno++)
- {
+ 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) {
- 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;
+ continue;
+ }
+ res = &comp->resolutions[pi->resno];
+ for (pi->precno = 0; pi->precno < res->pw * res->ph; pi->precno++) {
+ if (!pi->include[pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p]){
+ pi->include[pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p] = 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-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->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p]){
+ pi->include[pi->layno*pi->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p] = 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 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->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p]){
+ pi->include[pi->layno*pi->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p] = 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;
+/* <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);
}
- skip: ;
- }
- }
- }
- }
- }
- return 0;
+ }
+ }
+ 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->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p]){
+ pi->include[pi->layno*pi->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p] = 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;
+/* <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->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p]){
+ pi->include[pi->layno*pi->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p] = 1;
+ return 1;
+ }
+ skip:;
+ }
+ }
}
- skip: ;
- }
- }
- }
- }
- }
- return 0;
+ }
+ }
+ 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);
- }
+/* <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;
}
projects / openjpeg.git / blobdiff