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