293 lines
12 KiB
C
293 lines
12 KiB
C
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/*
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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 "tcd.h"
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#include "int.h"
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#include "t2.h"
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#include <setjmp.h>
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#include <float.h>
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#include <stdio.h>
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#include <time.h>
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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static tcd_image_t tcd_image;
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static j2k_image_t *tcd_img;
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static j2k_cp_t *tcd_cp;
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static tcd_tile_t *tcd_tile;
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static j2k_tcp_t *tcd_tcp;
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static int tcd_tileno;
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extern jmp_buf j2k_error;
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void tcd_init(j2k_image_t *img, j2k_cp_t *cp, info_image_t *imgg) {
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int tileno, compno, resno, bandno, precno, cblkno;
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tcd_img=img;
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tcd_cp=cp;
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tcd_image.tw=cp->tw;
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tcd_image.th=cp->th;
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tcd_image.tiles=(tcd_tile_t*)malloc(cp->tw*cp->th*sizeof(tcd_tile_t));
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for (tileno=0; tileno<cp->tw*cp->th; tileno++) {
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j2k_tcp_t *tcp=&cp->tcps[tileno];
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tcd_tile_t *tile=&tcd_image.tiles[tileno];
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// cfr p59 ISO/IEC FDIS15444-1 : 2000 (18 august 2000)
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int p=tileno%cp->tw; // si numerotation matricielle ..
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int q=tileno/cp->tw; // .. coordonnees de la tile (q,p) q pour ligne et p pour colonne
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info_tile_t *tile_Idx=&imgg->tile[tileno]; // INDEX
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// 4 borders of the tile rescale on the image if necessary
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tile->x0=int_max(cp->tx0+p*cp->tdx, img->x0);
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tile->y0=int_max(cp->ty0+q*cp->tdy, img->y0);
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tile->x1=int_min(cp->tx0+(p+1)*cp->tdx, img->x1);
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tile->y1=int_min(cp->ty0+(q+1)*cp->tdy, img->y1);
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tile->numcomps=img->numcomps;
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tile->comps=(tcd_tilecomp_t*)malloc(img->numcomps*sizeof(tcd_tilecomp_t));
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tile_Idx->compo=(info_compo_t*)malloc(img->numcomps*sizeof(info_compo_t)); // INDEX
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for (compno=0; compno<tile->numcomps; compno++) {
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j2k_tccp_t *tccp=&tcp->tccps[compno];
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tcd_tilecomp_t *tilec=&tile->comps[compno];
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info_compo_t *compo_Idx=&tile_Idx->compo[compno]; // INDEX
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// border of each tile component (global)
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tilec->x0=int_ceildiv(tile->x0, img->comps[compno].dx);
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tilec->y0=int_ceildiv(tile->y0, img->comps[compno].dy);
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tilec->x1=int_ceildiv(tile->x1, img->comps[compno].dx);
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tilec->y1=int_ceildiv(tile->y1, img->comps[compno].dy);
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tilec->data=(int*)malloc(sizeof(int)*(tilec->x1-tilec->x0)*(tilec->y1-tilec->y0));
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tilec->numresolutions=tccp->numresolutions;
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tilec->resolutions=(tcd_resolution_t*)malloc(tilec->numresolutions*sizeof(tcd_resolution_t));
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compo_Idx->reso=(info_reso_t*)malloc(tilec->numresolutions*sizeof(info_reso_t)); // INDEX
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for (resno=0; resno<tilec->numresolutions; resno++) {
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int pdx, pdy;
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int levelno=tilec->numresolutions-1-resno;
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int tlprcxstart, tlprcystart, brprcxend, brprcyend;
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int tlcbgxstart, tlcbgystart, brcbgxend, brcbgyend;
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int cbgwidthexpn, cbgheightexpn;
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int cblkwidthexpn, cblkheightexpn;
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tcd_resolution_t *res=&tilec->resolutions[resno];
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info_reso_t *res_Idx=&compo_Idx->reso[resno]; // INDEX
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int precno_Idx; // INDEX
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// border for each resolution level (global)
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res->x0=int_ceildivpow2(tilec->x0, levelno);
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res->y0=int_ceildivpow2(tilec->y0, levelno);
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res->x1=int_ceildivpow2(tilec->x1, levelno);
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res->y1=int_ceildivpow2(tilec->y1, levelno);
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res->numbands=resno==0?1:3;
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// p. 35, table A-23, ISO/IEC FDIS154444-1 : 2000 (18 august 2000)
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if (tccp->csty&J2K_CCP_CSTY_PRT) {
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pdx=tccp->prcw[resno];
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pdy=tccp->prch[resno];
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} else {
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pdx=15;
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pdy=15;
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}
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// p. 64, B.6, ISO/IEC FDIS15444-1 : 2000 (18 august 2000)
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tlprcxstart=int_floordivpow2(res->x0, pdx)<<pdx;
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tlprcystart=int_floordivpow2(res->y0, pdy)<<pdy;
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brprcxend=int_ceildivpow2(res->x1, pdx)<<pdx;
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brprcyend=int_ceildivpow2(res->y1, pdy)<<pdy;
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res->pw=(brprcxend-tlprcxstart)>>pdx;
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res->ph=(brprcyend-tlprcystart)>>pdy;
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// <INDEX>
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imgg->tile[tileno].pw=res->pw;
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imgg->tile[tileno].ph=res->ph;
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res_Idx->prec=(info_prec_t*)malloc(res->pw*res->ph*sizeof(info_prec_t));
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for (precno_Idx=0;precno_Idx<res->pw*res->ph;precno_Idx++)
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{
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info_prec_t *prec_Idx = &res_Idx->prec[precno_Idx];
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prec_Idx->layer=(info_layer_t*)malloc(imgg->Layer*sizeof(info_layer_t));
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}
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imgg->pw=res->pw; // old parser version
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imgg->ph=res->ph; // old parser version
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imgg->pdx=1<<pdx;
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imgg->pdy=1<<pdy;
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// </INDEX>
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if (resno==0) {
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tlcbgxstart=tlprcxstart;
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tlcbgystart=tlprcystart;
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brcbgxend=brprcxend;
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brcbgyend=brprcyend;
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cbgwidthexpn=pdx;
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cbgheightexpn=pdy;
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} else {
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tlcbgxstart=int_ceildivpow2(tlprcxstart, 1);
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tlcbgystart=int_ceildivpow2(tlprcystart, 1);
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brcbgxend=int_ceildivpow2(brprcxend, 1);
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brcbgyend=int_ceildivpow2(brprcyend, 1);
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cbgwidthexpn=pdx-1;
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cbgheightexpn=pdy-1;
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}
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cblkwidthexpn=int_min(tccp->cblkw, cbgwidthexpn);
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cblkheightexpn=int_min(tccp->cblkh, cbgheightexpn);
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for (bandno=0; bandno<res->numbands; bandno++) {
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int x0b, y0b;
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tcd_band_t *band=&res->bands[bandno];
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band->bandno=resno==0?0:bandno+1;
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x0b=(band->bandno==1)||(band->bandno==3)?1:0;
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y0b=(band->bandno==2)||(band->bandno==3)?1:0;
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if (band->bandno==0) {
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// band border (global)
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band->x0=int_ceildivpow2(tilec->x0, levelno);
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band->y0=int_ceildivpow2(tilec->y0, levelno);
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band->x1=int_ceildivpow2(tilec->x1, levelno);
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band->y1=int_ceildivpow2(tilec->y1, levelno);
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} else {
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// band border (global)
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band->x0=int_ceildivpow2(tilec->x0-(1<<levelno)*x0b, levelno+1);
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band->y0=int_ceildivpow2(tilec->y0-(1<<levelno)*y0b, levelno+1);
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band->x1=int_ceildivpow2(tilec->x1-(1<<levelno)*x0b, levelno+1);
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band->y1=int_ceildivpow2(tilec->y1-(1<<levelno)*y0b, levelno+1);
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}
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band->precincts=(tcd_precinct_t*)malloc(res->pw*res->ph*sizeof(tcd_precinct_t));
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for (precno=0; precno<res->pw*res->ph; precno++) {
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int tlcblkxstart, tlcblkystart, brcblkxend, brcblkyend;
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int cbgxstart=tlcbgxstart+(precno%res->pw)*(1<<cbgwidthexpn);
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int cbgystart=tlcbgystart+(precno/res->pw)*(1<<cbgheightexpn);
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int cbgxend=cbgxstart+(1<<cbgwidthexpn);
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int cbgyend=cbgystart+(1<<cbgheightexpn);
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tcd_precinct_t *prc=&band->precincts[precno];
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// precinct size (global)
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prc->x0=int_max(cbgxstart, band->x0);
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prc->y0=int_max(cbgystart, band->y0);
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prc->x1=int_min(cbgxend, band->x1);
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prc->y1=int_min(cbgyend, band->y1);
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tlcblkxstart=int_floordivpow2(prc->x0, cblkwidthexpn)<<cblkwidthexpn;
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tlcblkystart=int_floordivpow2(prc->y0, cblkheightexpn)<<cblkheightexpn;
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brcblkxend=int_ceildivpow2(prc->x1, cblkwidthexpn)<<cblkwidthexpn;
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brcblkyend=int_ceildivpow2(prc->y1, cblkheightexpn)<<cblkheightexpn;
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prc->cw=(brcblkxend-tlcblkxstart)>>cblkwidthexpn;
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prc->ch=(brcblkyend-tlcblkystart)>>cblkheightexpn;
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prc->cblks=(tcd_cblk_t*)malloc(prc->cw*prc->ch*sizeof(tcd_cblk_t));
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prc->incltree=tgt_create(prc->cw, prc->ch);
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prc->imsbtree=tgt_create(prc->cw, prc->ch);
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for (cblkno=0; cblkno<prc->cw*prc->ch; cblkno++) {
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int cblkxstart=tlcblkxstart+(cblkno%prc->cw)*(1<<cblkwidthexpn);
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int cblkystart=tlcblkystart+(cblkno/prc->cw)*(1<<cblkheightexpn);
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int cblkxend=cblkxstart+(1<<cblkwidthexpn);
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int cblkyend=cblkystart+(1<<cblkheightexpn);
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tcd_cblk_t *cblk=&prc->cblks[cblkno];
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// code-block size (global)
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cblk->x0=int_max(cblkxstart, prc->x0);
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cblk->y0=int_max(cblkystart, prc->y0);
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cblk->x1=int_min(cblkxend, prc->x1);
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cblk->y1=int_min(cblkyend, prc->y1);
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}
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}
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}
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}
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}
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}
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}
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void tcd_free(j2k_image_t *img, j2k_cp_t *cp) {
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int tileno, compno, resno, bandno, precno;
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tcd_img=img;
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tcd_cp=cp;
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tcd_image.tw=cp->tw;
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tcd_image.th=cp->th;
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for (tileno=0; tileno<tcd_image.tw*tcd_image.th; tileno++)
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{
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// j2k_tcp_t *tcp=&cp->tcps[curtileno];
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tcd_tile_t *tile=&tcd_image.tiles[tileno];
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for (compno=0; compno<tile->numcomps; compno++)
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{
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tcd_tilecomp_t *tilec=&tile->comps[compno];
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for (resno=0; resno<tilec->numresolutions; resno++)
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{
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tcd_resolution_t *res=&tilec->resolutions[resno];
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for (bandno=0; bandno<res->numbands; bandno++)
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{
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tcd_band_t *band=&res->bands[bandno];
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for (precno=0; precno<res->pw*res->ph; precno++)
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{
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tcd_precinct_t *prc=&band->precincts[precno];
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if (prc->incltree!=NULL)
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tgt_destroy(prc->incltree);
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if (prc->imsbtree!=NULL)
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tgt_destroy(prc->imsbtree);
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free(prc->cblks);
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} // for (precno
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free(band->precincts);
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} // for (bandno
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} // for (resno
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free(tilec->resolutions);
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} // for (compno
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free(tile->comps);
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} // for (tileno
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free(tcd_image.tiles);
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}
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int tcd_decode_tile(unsigned char *src, int len, int tileno, info_image_t *imgg) {
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int l;
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int eof=0;
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tcd_tile_t *tile;
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tcd_tileno=tileno;
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tcd_tile=&tcd_image.tiles[tileno];
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tcd_tcp=&tcd_cp->tcps[tileno];
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tile=tcd_tile;
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l=t2_decode_packets(src, len, tcd_img, tcd_cp, tileno, tile, imgg);
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if (l==-999)
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{
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eof=1;
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fprintf(stderr, "tcd_decode: incomplete bistream\n");
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}
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if (eof) {
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longjmp(j2k_error, 1);
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}
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l=1;
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return l;
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}
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