792 lines
23 KiB
C
Executable File
792 lines
23 KiB
C
Executable File
/*
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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2007, Professor Benoit Macq
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* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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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 "opj_includes.h"
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/** @defgroup T2 T2 - Implementation of a tier-2 coding */
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/*@{*/
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/** @name Local static functions */
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/*@{*/
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static void t2_putcommacode(opj_bio_t *bio, int n);
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static int t2_getcommacode(opj_bio_t *bio);
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/**
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Variable length code for signalling delta Zil (truncation point)
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@param bio Bit Input/Output component
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@param n delta Zil
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*/
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static void t2_putnumpasses(opj_bio_t *bio, int n);
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static int t2_getnumpasses(opj_bio_t *bio);
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/**
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Encode a packet of a tile to a destination buffer
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@param tile Tile for which to write the packets
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@param tcp Tile coding parameters
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@param pi Packet identity
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@param dest Destination buffer
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@param len Length of the destination buffer
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@param cstr_info Codestream information structure
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@param tileno Number of the tile encoded
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@return
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*/
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static int t2_encode_packet(opj_tcd_tile_t *tile, opj_tcp_t *tcp, opj_pi_iterator_t *pi, unsigned char *dest, int len, opj_codestream_info_t *cstr_info, int tileno);
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/**
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@param cblk
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@param index
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@param cblksty
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@param first
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*/
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static void t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first);
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/**
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Decode a packet of a tile from a source buffer
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@param t2 T2 handle
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@param src Source buffer
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@param len Length of the source buffer
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@param tile Tile for which to write the packets
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@param tcp Tile coding parameters
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@param pi Packet identity
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@param pack_info Packet information
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@return
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*/
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static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile,
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opj_tcp_t *tcp, opj_pi_iterator_t *pi, opj_packet_info_t *pack_info);
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/*@}*/
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/*@}*/
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/* ----------------------------------------------------------------------- */
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/* #define RESTART 0x04 */
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static void t2_putcommacode(opj_bio_t *bio, int n) {
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while (--n >= 0) {
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bio_write(bio, 1, 1);
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}
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bio_write(bio, 0, 1);
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}
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static int t2_getcommacode(opj_bio_t *bio) {
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int n;
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for (n = 0; bio_read(bio, 1); n++) {
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;
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}
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return n;
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}
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static void t2_putnumpasses(opj_bio_t *bio, int n) {
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if (n == 1) {
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bio_write(bio, 0, 1);
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} else if (n == 2) {
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bio_write(bio, 2, 2);
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} else if (n <= 5) {
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bio_write(bio, 0xc | (n - 3), 4);
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} else if (n <= 36) {
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bio_write(bio, 0x1e0 | (n - 6), 9);
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} else if (n <= 164) {
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bio_write(bio, 0xff80 | (n - 37), 16);
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}
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}
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static int t2_getnumpasses(opj_bio_t *bio) {
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int n;
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if (!bio_read(bio, 1))
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return 1;
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if (!bio_read(bio, 1))
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return 2;
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if ((n = bio_read(bio, 2)) != 3)
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return (3 + n);
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if ((n = bio_read(bio, 5)) != 31)
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return (6 + n);
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return (37 + bio_read(bio, 7));
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}
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static int t2_encode_packet(opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_iterator_t *pi, unsigned char *dest, int length, opj_codestream_info_t *cstr_info, int tileno) {
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int bandno, cblkno;
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unsigned char *c = dest;
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int compno = pi->compno; /* component value */
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int resno = pi->resno; /* resolution level value */
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int precno = pi->precno; /* precinct value */
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int layno = pi->layno; /* quality layer value */
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opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
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opj_tcd_resolution_t *res = &tilec->resolutions[resno];
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opj_bio_t *bio = NULL; /* BIO component */
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/* <SOP 0xff91> */
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if (tcp->csty & J2K_CP_CSTY_SOP) {
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c[0] = 255;
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c[1] = 145;
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c[2] = 0;
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c[3] = 4;
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c[4] = (tile->packno % 65536) / 256;
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c[5] = (tile->packno % 65536) % 256;
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c += 6;
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}
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/* </SOP> */
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if (!layno) {
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for (bandno = 0; bandno < res->numbands; bandno++) {
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opj_tcd_band_t *band = &res->bands[bandno];
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opj_tcd_precinct_t *prc = &band->precincts[precno];
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tgt_reset(prc->incltree);
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tgt_reset(prc->imsbtree);
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for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
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opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
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cblk->numpasses = 0;
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tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps);
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}
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}
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}
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bio = bio_create();
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bio_init_enc(bio, c, length);
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bio_write(bio, 1, 1); /* Empty header bit */
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/* Writing Packet header */
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for (bandno = 0; bandno < res->numbands; bandno++) {
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opj_tcd_band_t *band = &res->bands[bandno];
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opj_tcd_precinct_t *prc = &band->precincts[precno];
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for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
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opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
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opj_tcd_layer_t *layer = &cblk->layers[layno];
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if (!cblk->numpasses && layer->numpasses) {
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tgt_setvalue(prc->incltree, cblkno, layno);
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}
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}
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for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
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opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
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opj_tcd_layer_t *layer = &cblk->layers[layno];
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int increment = 0;
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int nump = 0;
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int len = 0, passno;
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/* cblk inclusion bits */
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if (!cblk->numpasses) {
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tgt_encode(bio, prc->incltree, cblkno, layno + 1);
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} else {
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bio_write(bio, layer->numpasses != 0, 1);
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}
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/* if cblk not included, go to the next cblk */
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if (!layer->numpasses) {
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continue;
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}
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/* if first instance of cblk --> zero bit-planes information */
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if (!cblk->numpasses) {
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cblk->numlenbits = 3;
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tgt_encode(bio, prc->imsbtree, cblkno, 999);
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}
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/* number of coding passes included */
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t2_putnumpasses(bio, layer->numpasses);
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/* computation of the increase of the length indicator and insertion in the header */
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for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) {
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opj_tcd_pass_t *pass = &cblk->passes[passno];
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nump++;
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len += pass->len;
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if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
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increment = int_max(increment, int_floorlog2(len) + 1 - (cblk->numlenbits + int_floorlog2(nump)));
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len = 0;
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nump = 0;
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}
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}
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t2_putcommacode(bio, increment);
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/* computation of the new Length indicator */
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cblk->numlenbits += increment;
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/* insertion of the codeword segment length */
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for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) {
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opj_tcd_pass_t *pass = &cblk->passes[passno];
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nump++;
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len += pass->len;
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if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
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bio_write(bio, len, cblk->numlenbits + int_floorlog2(nump));
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len = 0;
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nump = 0;
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}
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}
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}
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}
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if (bio_flush(bio)) {
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bio_destroy(bio);
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return -999; /* modified to eliminate longjmp !! */
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}
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c += bio_numbytes(bio);
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bio_destroy(bio);
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/* <EPH 0xff92> */
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if (tcp->csty & J2K_CP_CSTY_EPH) {
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c[0] = 255;
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c[1] = 146;
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c += 2;
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}
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/* </EPH> */
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/* << INDEX */
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// End of packet header position. Currently only represents the distance to start of packet
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// Will be updated later by incrementing with packet start value
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if(cstr_info && cstr_info->index_write) {
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opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
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info_PK->end_ph_pos = (int)(c - dest);
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}
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/* INDEX >> */
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/* Writing the packet body */
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for (bandno = 0; bandno < res->numbands; bandno++) {
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opj_tcd_band_t *band = &res->bands[bandno];
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opj_tcd_precinct_t *prc = &band->precincts[precno];
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for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
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opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
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opj_tcd_layer_t *layer = &cblk->layers[layno];
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if (!layer->numpasses) {
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continue;
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}
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if (c + layer->len > dest + length) {
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return -999;
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}
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memcpy(c, layer->data, layer->len);
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cblk->numpasses += layer->numpasses;
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c += layer->len;
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/* << INDEX */
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if(cstr_info && cstr_info->index_write) {
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opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
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info_PK->disto += layer->disto;
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if (cstr_info->D_max < info_PK->disto) {
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cstr_info->D_max = info_PK->disto;
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}
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}
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/* INDEX >> */
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}
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}
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return (c - dest);
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}
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static void t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first) {
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opj_tcd_seg_t* seg;
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cblk->segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, (index + 1) * sizeof(opj_tcd_seg_t));
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seg = &cblk->segs[index];
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seg->data = NULL;
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seg->dataindex = 0;
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seg->numpasses = 0;
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seg->len = 0;
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if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
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seg->maxpasses = 1;
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}
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else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
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if (first) {
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seg->maxpasses = 10;
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} else {
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seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
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}
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} else {
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seg->maxpasses = 109;
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}
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}
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static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile,
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opj_tcp_t *tcp, opj_pi_iterator_t *pi, opj_packet_info_t *pack_info) {
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int bandno, cblkno;
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unsigned char *c = src;
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opj_cp_t *cp = t2->cp;
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int compno = pi->compno; /* component value */
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int resno = pi->resno; /* resolution level value */
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int precno = pi->precno; /* precinct value */
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int layno = pi->layno; /* quality layer value */
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opj_tcd_resolution_t* res = &tile->comps[compno].resolutions[resno];
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unsigned char *hd = NULL;
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int present;
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opj_bio_t *bio = NULL; /* BIO component */
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if (layno == 0) {
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for (bandno = 0; bandno < res->numbands; bandno++) {
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opj_tcd_band_t *band = &res->bands[bandno];
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opj_tcd_precinct_t *prc = &band->precincts[precno];
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if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
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tgt_reset(prc->incltree);
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tgt_reset(prc->imsbtree);
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for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
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opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
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cblk->numsegs = 0;
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}
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}
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}
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/* SOP markers */
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if (tcp->csty & J2K_CP_CSTY_SOP) {
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if ((*c) != 0xff || (*(c + 1) != 0x91)) {
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opj_event_msg(t2->cinfo, EVT_WARNING, "Expected SOP marker\n");
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} else {
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c += 6;
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}
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/** TODO : check the Nsop value */
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}
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/*
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When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
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This part deal with this caracteristic
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step 1: Read packet header in the saved structure
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step 2: Return to codestream for decoding
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*/
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bio = bio_create();
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if (cp->ppm == 1) { /* PPM */
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hd = cp->ppm_data;
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bio_init_dec(bio, hd, cp->ppm_len);
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} else if (tcp->ppt == 1) { /* PPT */
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hd = tcp->ppt_data;
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bio_init_dec(bio, hd, tcp->ppt_len);
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} else { /* Normal Case */
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hd = c;
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bio_init_dec(bio, hd, src+len-hd);
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}
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present = bio_read(bio, 1);
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if (!present) {
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bio_inalign(bio);
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hd += bio_numbytes(bio);
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bio_destroy(bio);
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/* EPH markers */
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if (tcp->csty & J2K_CP_CSTY_EPH) {
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if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {
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printf("Error : expected EPH marker\n");
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} else {
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hd += 2;
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}
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}
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/* << INDEX */
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// End of packet header position. Currently only represents the distance to start of packet
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// Will be updated later by incrementing with packet start value
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if(pack_info) {
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pack_info->end_ph_pos = (int)(c - src);
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}
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/* INDEX >> */
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if (cp->ppm == 1) { /* PPM case */
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cp->ppm_len += cp->ppm_data-hd;
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cp->ppm_data = hd;
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return (c - src);
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}
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if (tcp->ppt == 1) { /* PPT case */
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tcp->ppt_len+=tcp->ppt_data-hd;
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tcp->ppt_data = hd;
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return (c - src);
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}
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return (hd - src);
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}
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for (bandno = 0; bandno < res->numbands; bandno++) {
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opj_tcd_band_t *band = &res->bands[bandno];
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opj_tcd_precinct_t *prc = &band->precincts[precno];
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if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
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for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
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int included, increment, n, segno;
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opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
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/* if cblk not yet included before --> inclusion tagtree */
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if (!cblk->numsegs) {
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included = tgt_decode(bio, prc->incltree, cblkno, layno + 1);
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/* else one bit */
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} else {
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included = bio_read(bio, 1);
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}
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/* if cblk not included */
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if (!included) {
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cblk->numnewpasses = 0;
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continue;
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}
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/* if cblk not yet included --> zero-bitplane tagtree */
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if (!cblk->numsegs) {
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int i, numimsbs;
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for (i = 0; !tgt_decode(bio, prc->imsbtree, cblkno, i); i++) {
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;
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}
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numimsbs = i - 1;
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cblk->numbps = band->numbps - numimsbs;
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cblk->numlenbits = 3;
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}
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/* number of coding passes */
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cblk->numnewpasses = t2_getnumpasses(bio);
|
|
increment = t2_getcommacode(bio);
|
|
/* length indicator increment */
|
|
cblk->numlenbits += increment;
|
|
segno = 0;
|
|
if (!cblk->numsegs) {
|
|
t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 1);
|
|
} else {
|
|
segno = cblk->numsegs - 1;
|
|
if (cblk->segs[segno].numpasses == cblk->segs[segno].maxpasses) {
|
|
++segno;
|
|
t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0);
|
|
}
|
|
}
|
|
n = cblk->numnewpasses;
|
|
|
|
do {
|
|
cblk->segs[segno].numnewpasses = int_min(cblk->segs[segno].maxpasses - cblk->segs[segno].numpasses, n);
|
|
cblk->segs[segno].newlen = bio_read(bio, cblk->numlenbits + int_floorlog2(cblk->segs[segno].numnewpasses));
|
|
n -= cblk->segs[segno].numnewpasses;
|
|
if (n > 0) {
|
|
++segno;
|
|
t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0);
|
|
}
|
|
} while (n > 0);
|
|
}
|
|
}
|
|
|
|
if (bio_inalign(bio)) {
|
|
bio_destroy(bio);
|
|
return -999;
|
|
}
|
|
|
|
hd += bio_numbytes(bio);
|
|
bio_destroy(bio);
|
|
|
|
/* EPH markers */
|
|
if (tcp->csty & J2K_CP_CSTY_EPH) {
|
|
if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {
|
|
opj_event_msg(t2->cinfo, EVT_ERROR, "Expected EPH marker\n");
|
|
return -999;
|
|
} else {
|
|
hd += 2;
|
|
}
|
|
}
|
|
|
|
/* << INDEX */
|
|
// End of packet header position. Currently only represents the distance to start of packet
|
|
// Will be updated later by incrementing with packet start value
|
|
if(pack_info) {
|
|
pack_info->end_ph_pos = (int)(hd - src);
|
|
}
|
|
/* INDEX >> */
|
|
|
|
if (cp->ppm==1) {
|
|
cp->ppm_len+=cp->ppm_data-hd;
|
|
cp->ppm_data = hd;
|
|
} else if (tcp->ppt == 1) {
|
|
tcp->ppt_len+=tcp->ppt_data-hd;
|
|
tcp->ppt_data = hd;
|
|
} else {
|
|
c=hd;
|
|
}
|
|
|
|
for (bandno = 0; bandno < res->numbands; bandno++) {
|
|
opj_tcd_band_t *band = &res->bands[bandno];
|
|
opj_tcd_precinct_t *prc = &band->precincts[precno];
|
|
|
|
if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
|
|
|
|
for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
|
|
opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
|
|
opj_tcd_seg_t *seg = NULL;
|
|
if (!cblk->numnewpasses)
|
|
continue;
|
|
if (!cblk->numsegs) {
|
|
seg = &cblk->segs[0];
|
|
cblk->numsegs++;
|
|
cblk->len = 0;
|
|
} else {
|
|
seg = &cblk->segs[cblk->numsegs - 1];
|
|
if (seg->numpasses == seg->maxpasses) {
|
|
seg++;
|
|
cblk->numsegs++;
|
|
}
|
|
}
|
|
|
|
do {
|
|
if (c + seg->newlen > src + len) {
|
|
return -999;
|
|
}
|
|
|
|
#ifdef USE_JPWL
|
|
/* we need here a j2k handle to verify if making a check to
|
|
the validity of cblocks parameters is selected from user (-W) */
|
|
|
|
/* let's check that we are not exceeding */
|
|
if ((cblk->len + seg->newlen) > 8192) {
|
|
opj_event_msg(t2->cinfo, EVT_WARNING,
|
|
"JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
|
|
seg->newlen, cblkno, precno, bandno, resno, compno);
|
|
if (!JPWL_ASSUME) {
|
|
opj_event_msg(t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
|
|
return -999;
|
|
}
|
|
seg->newlen = 8192 - cblk->len;
|
|
opj_event_msg(t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", seg->newlen);
|
|
break;
|
|
};
|
|
|
|
#endif /* USE_JPWL */
|
|
|
|
cblk->data = (unsigned char*) opj_realloc(cblk->data, (cblk->len + seg->newlen) * sizeof(unsigned char*));
|
|
memcpy(cblk->data + cblk->len, c, seg->newlen);
|
|
if (seg->numpasses == 0) {
|
|
seg->data = &cblk->data;
|
|
seg->dataindex = cblk->len;
|
|
}
|
|
c += seg->newlen;
|
|
cblk->len += seg->newlen;
|
|
seg->len += seg->newlen;
|
|
seg->numpasses += seg->numnewpasses;
|
|
cblk->numnewpasses -= seg->numnewpasses;
|
|
if (cblk->numnewpasses > 0) {
|
|
seg++;
|
|
cblk->numsegs++;
|
|
}
|
|
} while (cblk->numnewpasses > 0);
|
|
}
|
|
}
|
|
|
|
return (c - src);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
int t2_encode_packets(opj_t2_t* t2,int tileno, opj_tcd_tile_t *tile, int maxlayers, unsigned char *dest, int len, opj_codestream_info_t *cstr_info,int tpnum, int tppos,int pino, J2K_T2_MODE t2_mode, int cur_totnum_tp){
|
|
unsigned char *c = dest;
|
|
int e = 0;
|
|
int compno;
|
|
opj_pi_iterator_t *pi = NULL;
|
|
int poc;
|
|
opj_image_t *image = t2->image;
|
|
opj_cp_t *cp = t2->cp;
|
|
opj_tcp_t *tcp = &cp->tcps[tileno];
|
|
int pocno = cp->cinema == CINEMA4K_24? 2: 1;
|
|
int maxcomp = cp->max_comp_size > 0 ? image->numcomps : 1;
|
|
|
|
pi = pi_initialise_encode(image, cp, tileno, t2_mode);
|
|
if(!pi) {
|
|
/* TODO: throw an error */
|
|
return -999;
|
|
}
|
|
|
|
if(t2_mode == THRESH_CALC ){ /* Calculating threshold */
|
|
for(compno = 0; compno < maxcomp; compno++ ){
|
|
for(poc = 0; poc < pocno ; poc++){
|
|
int comp_len = 0;
|
|
int tpnum = compno;
|
|
if (pi_create_encode(pi, cp,tileno,poc,tpnum,tppos,t2_mode,cur_totnum_tp)) {
|
|
opj_event_msg(t2->cinfo, EVT_ERROR, "Error initializing Packet Iterator\n");
|
|
pi_destroy(pi, cp, tileno);
|
|
return -999;
|
|
}
|
|
while (pi_next(&pi[poc])) {
|
|
if (pi[poc].layno < maxlayers) {
|
|
e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[poc], c, dest + len - c, cstr_info, tileno);
|
|
comp_len = comp_len + e;
|
|
if (e == -999) {
|
|
break;
|
|
} else {
|
|
c += e;
|
|
}
|
|
}
|
|
}
|
|
if (e == -999) break;
|
|
if (cp->max_comp_size){
|
|
if (comp_len > cp->max_comp_size){
|
|
e = -999;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (e == -999) break;
|
|
}
|
|
}else{ /* t2_mode == FINAL_PASS */
|
|
pi_create_encode(pi, cp,tileno,pino,tpnum,tppos,t2_mode,cur_totnum_tp);
|
|
while (pi_next(&pi[pino])) {
|
|
if (pi[pino].layno < maxlayers) {
|
|
e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[pino], c, dest + len - c, cstr_info, tileno);
|
|
if (e == -999) {
|
|
break;
|
|
} else {
|
|
c += e;
|
|
}
|
|
/* INDEX >> */
|
|
if(cstr_info) {
|
|
if(cstr_info->index_write) {
|
|
opj_tile_info_t *info_TL = &cstr_info->tile[tileno];
|
|
opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
|
|
if (!cstr_info->packno) {
|
|
info_PK->start_pos = info_TL->end_header + 1;
|
|
} else {
|
|
info_PK->start_pos = ((cp->tp_on | tcp->POC)&& info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
|
|
}
|
|
info_PK->end_pos = info_PK->start_pos + e - 1;
|
|
info_PK->end_ph_pos += info_PK->start_pos - 1; // End of packet header which now only represents the distance
|
|
// to start of packet is incremented by value of start of packet
|
|
}
|
|
|
|
cstr_info->packno++;
|
|
}
|
|
/* << INDEX */
|
|
tile->packno++;
|
|
}
|
|
}
|
|
}
|
|
|
|
pi_destroy(pi, cp, tileno);
|
|
|
|
if (e == -999) {
|
|
return e;
|
|
}
|
|
|
|
return (c - dest);
|
|
}
|
|
|
|
int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj_tcd_tile_t *tile, opj_codestream_info_t *cstr_info) {
|
|
unsigned char *c = src;
|
|
opj_pi_iterator_t *pi;
|
|
int pino, e = 0;
|
|
int n = 0, curtp = 0;
|
|
int tp_start_packno;
|
|
|
|
opj_image_t *image = t2->image;
|
|
opj_cp_t *cp = t2->cp;
|
|
|
|
/* create a packet iterator */
|
|
pi = pi_create_decode(image, cp, tileno);
|
|
if(!pi) {
|
|
/* TODO: throw an error */
|
|
return -999;
|
|
}
|
|
|
|
tp_start_packno = 0;
|
|
|
|
for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) {
|
|
while (pi_next(&pi[pino])) {
|
|
if ((cp->layer==0) || (cp->layer>=((pi[pino].layno)+1))) {
|
|
opj_packet_info_t *pack_info;
|
|
if (cstr_info)
|
|
pack_info = &cstr_info->tile[tileno].packet[cstr_info->packno];
|
|
else
|
|
pack_info = NULL;
|
|
e = t2_decode_packet(t2, c, src + len - c, tile, &cp->tcps[tileno], &pi[pino], pack_info);
|
|
} else {
|
|
e = 0;
|
|
}
|
|
if(e == -999) return -999;
|
|
/* progression in resolution */
|
|
image->comps[pi[pino].compno].resno_decoded =
|
|
(e > 0) ?
|
|
int_max(pi[pino].resno, image->comps[pi[pino].compno].resno_decoded)
|
|
: image->comps[pi[pino].compno].resno_decoded;
|
|
n++;
|
|
|
|
/* INDEX >> */
|
|
if(cstr_info) {
|
|
opj_tile_info_t *info_TL = &cstr_info->tile[tileno];
|
|
opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
|
|
if (!cstr_info->packno) {
|
|
info_PK->start_pos = info_TL->end_header + 1;
|
|
} else if (info_TL->packet[cstr_info->packno-1].end_pos >= (int)cstr_info->tile[tileno].tp[curtp].tp_end_pos){ // New tile part
|
|
info_TL->tp[curtp].tp_numpacks = cstr_info->packno - tp_start_packno; // Number of packets in previous tile-part
|
|
tp_start_packno = cstr_info->packno;
|
|
curtp++;
|
|
info_PK->start_pos = cstr_info->tile[tileno].tp[curtp].tp_end_header+1;
|
|
} else {
|
|
info_PK->start_pos = (cp->tp_on && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
|
|
}
|
|
info_PK->end_pos = info_PK->start_pos + e - 1;
|
|
info_PK->end_ph_pos += info_PK->start_pos - 1; // End of packet header which now only represents the distance
|
|
// to start of packet is incremented by value of start of packet
|
|
cstr_info->packno++;
|
|
}
|
|
/* << INDEX */
|
|
|
|
if (e == -999) { /* ADD */
|
|
break;
|
|
} else {
|
|
c += e;
|
|
}
|
|
}
|
|
}
|
|
/* INDEX >> */
|
|
if(cstr_info) {
|
|
cstr_info->tile[tileno].tp[curtp].tp_numpacks = cstr_info->packno - tp_start_packno; // Number of packets in last tile-part
|
|
}
|
|
/* << INDEX */
|
|
|
|
/* don't forget to release pi */
|
|
pi_destroy(pi, cp, tileno);
|
|
|
|
if (e == -999) {
|
|
return e;
|
|
}
|
|
|
|
return (c - src);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
opj_t2_t* t2_create(opj_common_ptr cinfo, opj_image_t *image, opj_cp_t *cp) {
|
|
/* create the tcd structure */
|
|
opj_t2_t *t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
|
|
if(!t2) return NULL;
|
|
t2->cinfo = cinfo;
|
|
t2->image = image;
|
|
t2->cp = cp;
|
|
|
|
return t2;
|
|
}
|
|
|
|
void t2_destroy(opj_t2_t *t2) {
|
|
if(t2) {
|
|
opj_free(t2);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|