466 lines
14 KiB
C
466 lines
14 KiB
C
/*
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* Copyright (c) 2001-2002, David Janssens
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* Copyright (c) 2003-2004, Yannick Verschueren
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* Copyright (c) 2003-2004, 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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{
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int p, q;
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int compno, resno, pino;
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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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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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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 =
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(pi_resolution_t *) malloc(comp->numresolutions *
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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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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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tccp = &tcp->tccps[0];
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pi[pino].step_p=1;
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pi[pino].step_c=100*pi[pino].step_p;
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pi[pino].step_r=img->numcomps*pi[pino].step_c;
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pi[pino].step_l=maxres*pi[pino].step_r;
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if (pino==0)
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pi[pino].include=(short int*)calloc(img->numcomps*maxres*tcp->numlayers*100,sizeof(short int));
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else
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pi[pino].include=pi[pino-1].include;
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/*if (pino == tcp->numpocs) {*/
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if (tcp->POC == 0) {
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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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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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{
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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->layno = 0; pi->layno < pi->poc.layno1; pi->layno++) {
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for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1;
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pi->resno++) {
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for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
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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->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p]){
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pi->include[pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p] = 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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{
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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;
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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->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p]){
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pi->include[pi->layno*pi->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p] = 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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{
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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 =
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comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
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dy =
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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;
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pi->y += pi->dy - (pi->y % pi->dy)) {
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for (pi->x = pi->tx0; pi->x < pi->tx1;
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pi->x += pi->dx - (pi->x % pi->dx)) {
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for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
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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 (!
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(pi->x % (comp->dx << rpx) == 0
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|| (pi->x == pi->tx0 && (trx0 << levelno) % (1 << rpx)))) {
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continue;
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}
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if (!
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(pi->y % (comp->dy << rpy) == 0
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|| (pi->y == pi->ty0 && (try0 << levelno) % (1 << rpx)))) {
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continue;
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}
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prci =
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int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno),
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res->pdx) - int_floordivpow2(trx0, res->pdx);
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prcj =
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int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno),
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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->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p]){
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pi->include[pi->layno*pi->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p] = 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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{
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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 =
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comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
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dy =
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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;
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pi->y += pi->dy - (pi->y % pi->dy)) {
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for (pi->x = pi->tx0; pi->x < pi->tx1;
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pi->x += pi->dx - (pi->x % pi->dx)) {
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for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1;
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pi->compno++) {
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comp = &pi->comps[pi->compno];
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for (pi->resno = pi->poc.resno0;
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pi->resno < int_min(pi->poc.resno1, comp->numresolutions);
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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 (!
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(pi->x % (comp->dx << rpx) == 0
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|| (pi->x == pi->tx0 && (trx0 << levelno) % (1 << rpx)))) {
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continue;
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}
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if (!
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(pi->y % (comp->dy << rpy) == 0
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|| (pi->y == pi->ty0 && (try0 << levelno) % (1 << rpx)))) {
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continue;
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}
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prci =
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int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno),
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res->pdx) - int_floordivpow2(trx0, res->pdx);
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prcj =
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int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno),
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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->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p]){
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pi->include[pi->layno*pi->step_l+pi->resno*pi->step_r+pi->compno*pi->step_c+pi->precno*pi->step_p] = 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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{
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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;
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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;
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pi->y += pi->dy - (pi->y % pi->dy)) {
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for (pi->x = pi->tx0; pi->x < pi->tx1;
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pi->x += pi->dx - (pi->x % pi->dx)) {
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for (pi->resno = pi->poc.resno0;
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pi->resno < int_min(pi->poc.resno1, comp->numresolutions);
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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;
|
|
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. */
|
|
/* </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;
|
|
}
|