/* | |
* Copyright (c) 2001-2003, David Janssens | |
* Copyright (c) 2002-2003, Yannick Verschueren | |
* Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe | |
* Copyright (c) 2005, Herve Drolon, FreeImage Team | |
* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' | |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
* POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#include "opj_includes.h" | |
/** @defgroup T2 T2 - Implementation of a tier-2 coding */ | |
/*@{*/ | |
/** @name Local static functions */ | |
/*@{*/ | |
static void t2_putcommacode(opj_bio_t *bio, int n); | |
static int t2_getcommacode(opj_bio_t *bio); | |
/** | |
Variable length code for signalling delta Zil (truncation point) | |
@param bio Bit Input/Output component | |
@param n delta Zil | |
*/ | |
static void t2_putnumpasses(opj_bio_t *bio, int n); | |
static int t2_getnumpasses(opj_bio_t *bio); | |
/** | |
Encode a packet of a tile to a destination buffer | |
@param tile Tile for which to write the packets | |
@param tcp Tile coding parameters | |
@param pi Packet identity | |
@param dest Destination buffer | |
@param len Length of the destination buffer | |
@param volume_info Structure to create an index file | |
@param tileno Number of the tile encoded | |
@param cp Coding parameters | |
@return Number of bytes encoded from the packet | |
*/ | |
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_volume_info_t *volume_info, int tileno, opj_cp_t *cp); | |
/** | |
Initialize the segment decoder | |
@param seg Segment instance | |
@param cblksty Codeblock style | |
@param first Is first segment | |
*/ | |
static void t2_init_seg(opj_tcd_seg_t *seg, int cblksty, int first); | |
/** | |
Decode a packet of a tile from a source buffer | |
@param t2 T2 handle | |
@param src Source buffer | |
@param len Length of the source buffer | |
@param tile Tile for which to write the packets | |
@param tcp Tile coding parameters | |
@param pi Packet identity | |
@return Number of bytes decoded from the packet | |
*/ | |
int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile, opj_tcp_t *tcp, opj_pi_iterator_t *pi); | |
/*@}*/ | |
/*@}*/ | |
/* ----------------------------------------------------------------------- */ | |
/* #define RESTART 0x04 */ | |
static void t2_putcommacode(opj_bio_t *bio, int n) { | |
while (--n >= 0) { | |
bio_write(bio, 1, 1); | |
} | |
bio_write(bio, 0, 1); | |
} | |
static int t2_getcommacode(opj_bio_t *bio) { | |
int n; | |
for (n = 0; bio_read(bio, 1); n++) { | |
; | |
} | |
return n; | |
} | |
static void t2_putnumpasses(opj_bio_t *bio, int n) { | |
if (n == 1) { | |
bio_write(bio, 0, 1); | |
} else if (n == 2) { | |
bio_write(bio, 2, 2); | |
} else if (n <= 5) { | |
bio_write(bio, 0xc | (n - 3), 4); | |
} else if (n <= 36) { | |
bio_write(bio, 0x1e0 | (n - 6), 9); | |
} else if (n <= 164) { | |
bio_write(bio, 0xff80 | (n - 37), 16); | |
} | |
} | |
static int t2_getnumpasses(opj_bio_t *bio) { | |
int n; | |
if (!bio_read(bio, 1)) | |
return 1; | |
if (!bio_read(bio, 1)) | |
return 2; | |
if ((n = bio_read(bio, 2)) != 3) | |
return (3 + n); | |
if ((n = bio_read(bio, 5)) != 31) | |
return (6 + n); | |
return (37 + bio_read(bio, 7)); | |
} | |
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_volume_info_t * volume_info, int tileno, opj_cp_t *cp) { | |
int bandno, cblkno; | |
unsigned char *sop = 0, *eph = 0; | |
unsigned char *c = dest; | |
int compno = pi->compno; /* component value */ | |
int resno = pi->resno; /* resolution level value */ | |
int precno = pi->precno; /* precinct value */ | |
int layno = pi->layno; /* quality layer value */ | |
opj_tcd_tilecomp_t *tilec = &tile->comps[compno]; | |
opj_tcd_resolution_t *res = &tilec->resolutions[resno]; | |
opj_bio_t *bio = NULL; /* BIO component */ | |
/* <SOP 0xff91> */ | |
if ((tcp->csty & J3D_CP_CSTY_SOP)) { | |
sop = (unsigned char *) opj_malloc(6 * sizeof(unsigned char)); | |
sop[0] = 255; | |
sop[1] = 145; | |
sop[2] = 0; | |
sop[3] = 4; | |
sop[4] = (volume_info) ? (volume_info->num % 65536) / 256 : (0 % 65536) / 256 ; | |
sop[5] = (volume_info) ? (volume_info->num % 65536) % 256 : (0 % 65536) % 256 ; | |
memcpy(c, sop, 6); | |
opj_free(sop); | |
c += 6; | |
} | |
/* </SOP> */ | |
if (!layno) { | |
for (bandno = 0; bandno < res->numbands; bandno++) { | |
opj_tcd_band_t *band = &res->bands[bandno]; | |
opj_tcd_precinct_t *prc = &band->precincts[precno]; | |
tgt_reset(prc->incltree); | |
tgt_reset(prc->imsbtree); | |
for (cblkno = 0; cblkno < prc->cblkno[0] * prc->cblkno[1] * prc->cblkno[2]; cblkno++) { | |
opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; | |
cblk->numpasses = 0; | |
tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps); | |
} | |
} | |
} | |
bio = bio_create(); | |
bio_init_enc(bio, c, len); | |
bio_write(bio, 1, 1); /* Empty header bit */ | |
/* Writing Packet header */ | |
for (bandno = 0; bandno < res->numbands; bandno++) { | |
opj_tcd_band_t *band = &res->bands[bandno]; | |
opj_tcd_precinct_t *prc = &band->precincts[precno]; | |
for (cblkno = 0; cblkno < prc->cblkno[0] * prc->cblkno[1] * prc->cblkno[2]; cblkno++) { | |
opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; | |
opj_tcd_layer_t *layer = &cblk->layers[layno]; | |
if (!cblk->numpasses && layer->numpasses) { | |
tgt_setvalue(prc->incltree, cblkno, layno); | |
} | |
} | |
for (cblkno = 0; cblkno < prc->cblkno[0] * prc->cblkno[1] * prc->cblkno[2]; cblkno++) { | |
opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; | |
opj_tcd_layer_t *layer = &cblk->layers[layno]; | |
int increment = 0; | |
int nump = 0; | |
int len = 0, passno; | |
/* cblk inclusion bits */ | |
if (!cblk->numpasses) { | |
tgt_encode(bio, prc->incltree, cblkno, layno + 1); | |
} else { | |
bio_write(bio, layer->numpasses != 0, 1); | |
} | |
/* if cblk not included, go to the next cblk */ | |
if (!layer->numpasses) { | |
continue; | |
} | |
/* if first instance of cblk --> zero bit-planes information */ | |
if (!cblk->numpasses) { | |
cblk->numlenbits = 3; | |
tgt_encode(bio, prc->imsbtree, cblkno, 999); | |
} | |
/* number of coding passes included */ | |
t2_putnumpasses(bio, layer->numpasses); | |
/* computation of the increase of the length indicator and insertion in the header */ | |
for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) { | |
opj_tcd_pass_t *pass = &cblk->passes[passno]; | |
nump++; | |
len += pass->len; | |
if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) { | |
increment = int_max(increment, int_floorlog2(len) + 1 - (cblk->numlenbits + int_floorlog2(nump))); | |
len = 0; | |
nump = 0; | |
} | |
} | |
t2_putcommacode(bio, increment); | |
/* computation of the new Length indicator */ | |
cblk->numlenbits += increment; | |
/* insertion of the codeword segment length */ | |
for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) { | |
opj_tcd_pass_t *pass = &cblk->passes[passno]; | |
nump++; | |
len += pass->len; | |
if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) { | |
bio_write(bio, len, cblk->numlenbits + int_floorlog2(nump)); | |
len = 0; | |
nump = 0; | |
} | |
} | |
} | |
} | |
if (bio_flush(bio)) { | |
return -999; /* modified to eliminate longjmp !! */ | |
} | |
c += bio_numbytes(bio); | |
bio_destroy(bio); | |
/* <EPH 0xff92> */ | |
if (tcp->csty & J3D_CP_CSTY_EPH) { | |
eph = (unsigned char *) opj_malloc(2 * sizeof(unsigned char)); | |
eph[0] = 255; | |
eph[1] = 146; | |
memcpy(c, eph, 2); | |
opj_free(eph); | |
c += 2; | |
} | |
/* </EPH> */ | |
/* Writing the packet body */ | |
for (bandno = 0; bandno < res->numbands; bandno++) { | |
opj_tcd_band_t *band = &res->bands[bandno]; | |
opj_tcd_precinct_t *prc = &band->precincts[precno]; | |
for (cblkno = 0; cblkno < prc->cblkno[0] * prc->cblkno[1] * prc->cblkno[2]; cblkno++) { | |
opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; | |
opj_tcd_layer_t *layer = &cblk->layers[layno]; | |
if (!layer->numpasses) { | |
continue; | |
} | |
if (c + layer->len > dest + len) { | |
return -999; | |
} | |
memcpy(c, layer->data, layer->len); | |
cblk->numpasses += layer->numpasses; | |
c += layer->len; | |
/* ADD for index Cfr. Marcela --> delta disto by packet */ | |
if(volume_info && volume_info->index_write && volume_info->index_on) { | |
opj_tile_info_t *info_TL = &volume_info->tile[tileno]; | |
opj_packet_info_t *info_PK = &info_TL->packet[volume_info->num]; | |
info_PK->disto += layer->disto; | |
if (volume_info->D_max < info_PK->disto) { | |
volume_info->D_max = info_PK->disto; | |
} | |
} | |
/* </ADD> */ | |
} | |
} | |
return (c - dest); | |
} | |
static void t2_init_seg(opj_tcd_seg_t * seg, int cblksty, int first) { | |
seg->numpasses = 0; | |
seg->len = 0; | |
if (cblksty & J3D_CCP_CBLKSTY_TERMALL) { | |
seg->maxpasses = 1; | |
} | |
else if (cblksty & J3D_CCP_CBLKSTY_LAZY) { | |
if (first) { | |
seg->maxpasses = 10; | |
} else { | |
seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1; | |
} | |
} else { | |
seg->maxpasses = 109; | |
} | |
} | |
int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile, opj_tcp_t *tcp, opj_pi_iterator_t *pi) { | |
int bandno, cblkno; | |
unsigned char *c = src; | |
opj_cp_t *cp = t2->cp; | |
int compno = pi->compno; /* component value */ | |
int resno = pi->resno; /* resolution level value */ | |
int precno = pi->precno; /* precinct value */ | |
int layno = pi->layno; /* quality layer value */ | |
opj_tcd_tilecomp_t *tilec = &tile->comps[compno]; | |
opj_tcd_resolution_t *res = &tilec->resolutions[resno]; | |
unsigned char *hd = NULL; | |
int present; | |
opj_bio_t *bio = NULL; /* BIO component */ | |
if (layno == 0) { | |
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)||(band->z1-band->z0 == 0)) continue; | |
tgt_reset(prc->incltree); | |
tgt_reset(prc->imsbtree); | |
for (cblkno = 0; cblkno < prc->cblkno[0] * prc->cblkno[1] * prc->cblkno[2]; cblkno++) { | |
opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; | |
cblk->numsegs = 0; | |
} | |
} | |
} | |
/* SOP markers */ | |
if (tcp->csty & J3D_CP_CSTY_SOP) { | |
if ((*c) != 0xff || (*(c + 1) != 0x91)) { | |
opj_event_msg(t2->cinfo, EVT_WARNING, "Expected SOP marker\n"); | |
} else { | |
c += 6; | |
} | |
/** TODO : check the Nsop value */ | |
} | |
/* | |
When the marker PPT/PPM is used the packet header are store in PPT/PPM marker | |
This part deal with this caracteristic | |
step 1: Read packet header in the saved structure | |
step 2: Return to codestream for decoding | |
*/ | |
bio = bio_create(); | |
if (cp->ppm == 1) { /* PPM */ | |
hd = cp->ppm_data; | |
bio_init_dec(bio, hd, cp->ppm_len); | |
} else if (tcp->ppt == 1) { /* PPT */ | |
hd = tcp->ppt_data; | |
bio_init_dec(bio, hd, tcp->ppt_len); | |
} else { /* Normal Case */ | |
hd = c; | |
bio_init_dec(bio, hd, src+len-hd); | |
} | |
present = bio_read(bio, 1); | |
if (!present) { | |
bio_inalign(bio); | |
hd += bio_numbytes(bio); | |
bio_destroy(bio); | |
/* EPH markers */ | |
if (tcp->csty & J3D_CP_CSTY_EPH) { | |
if ((*hd) != 0xff || (*(hd + 1) != 0x92)) { | |
printf("Error : expected EPH marker\n"); | |
} else { | |
hd += 2; | |
} | |
} | |
if (cp->ppm == 1) { /* PPM case */ | |
cp->ppm_len += cp->ppm_data-hd; | |
cp->ppm_data = hd; | |
return (c - src); | |
} | |
if (tcp->ppt == 1) { /* PPT case */ | |
tcp->ppt_len+=tcp->ppt_data-hd; | |
tcp->ppt_data = hd; | |
return (c - src); | |
} | |
return (hd - src); | |
} | |
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)||(band->z1-band->z0 == 0)) continue; | |
for (cblkno = 0; cblkno < prc->cblkno[0] * prc->cblkno[1] * prc->cblkno[2]; cblkno++) { | |
int included, increment, n; | |
opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; | |
opj_tcd_seg_t *seg = NULL; | |
/* if cblk not yet included before --> inclusion tagtree */ | |
if (!cblk->numsegs) { | |
included = tgt_decode(bio, prc->incltree, cblkno, layno + 1); | |
/* else one bit */ | |
} else { | |
included = bio_read(bio, 1); | |
} | |
/* if cblk not included */ | |
if (!included) { | |
cblk->numnewpasses = 0; | |
continue; | |
} | |
/* if cblk not yet included --> zero-bitplane tagtree */ | |
if (!cblk->numsegs) { | |
int i, numimsbs; | |
for (i = 0; !tgt_decode(bio, prc->imsbtree, cblkno, i); i++); | |
numimsbs = i - 1; | |
cblk->numbps = band->numbps - numimsbs; | |
cblk->numlenbits = 3; | |
} | |
/* number of coding passes */ | |
cblk->numnewpasses = t2_getnumpasses(bio); | |
increment = t2_getcommacode(bio); | |
/* length indicator increment */ | |
cblk->numlenbits += increment; | |
if (!cblk->numsegs) { | |
seg = &cblk->segs[0]; | |
t2_init_seg(seg, tcp->tccps[compno].cblksty, 1); | |
} else { | |
seg = &cblk->segs[cblk->numsegs - 1]; | |
if (seg->numpasses == seg->maxpasses) { | |
t2_init_seg(++seg, tcp->tccps[compno].cblksty, 0); | |
} | |
} | |
n = cblk->numnewpasses; | |
do { | |
seg->numnewpasses = int_min(seg->maxpasses - seg->numpasses, n); | |
seg->newlen = bio_read(bio, cblk->numlenbits + int_floorlog2(seg->numnewpasses)); | |
n -= seg->numnewpasses; | |
if (n > 0) { | |
t2_init_seg(++seg, 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 & J3D_CP_CSTY_EPH) { | |
if ((*hd) != 0xff || (*(hd + 1) != 0x92)) { | |
opj_event_msg(t2->cinfo, EVT_ERROR, "Expected EPH marker\n"); | |
} else { | |
hd += 2; | |
} | |
} | |
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)||(band->z1-band->z0 == 0)) continue; | |
for (cblkno = 0; cblkno < prc->cblkno[0] * prc->cblkno[1] * prc->cblkno[2]; cblkno++) { | |
opj_tcd_cblk_t *cblk = &prc->cblks[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; | |
} | |
memcpy(cblk->data + cblk->len, c, seg->newlen); | |
if (seg->numpasses == 0) { | |
seg->data = cblk->data + 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_volume_info_t *volume_info) { | |
unsigned char *c = dest; | |
int e = 0; | |
opj_pi_iterator_t *pi = NULL; | |
int pino; | |
opj_volume_t *volume = t2->volume; | |
opj_cp_t *cp = t2->cp; | |
/* create a packet iterator */ | |
pi = pi_create(volume, cp, tileno); | |
if(!pi) { | |
fprintf(stdout,"[ERROR] Failed to create a pi structure\n"); | |
return -999; | |
} | |
if(volume_info) { | |
volume_info->num = 0; | |
} | |
for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) { | |
while (pi_next(&pi[pino])) { | |
if (pi[pino].layno < maxlayers) { | |
e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[pino], c, dest + len - c, volume_info, tileno, cp); | |
//opj_event_msg(t2->cinfo, EVT_INFO, " t2_encode_packet: %d bytes coded\n",e); | |
if (e == -999) { | |
break; | |
} else { | |
c += e; | |
} | |
/* INDEX >> */ | |
if(volume_info && volume_info->index_on) { | |
if(volume_info->index_write) { | |
opj_tile_info_t *info_TL = &volume_info->tile[tileno]; | |
opj_packet_info_t *info_PK = &info_TL->packet[volume_info->num]; | |
if (!volume_info->num) { | |
info_PK->start_pos = info_TL->end_header + 1; | |
} else { | |
info_PK->start_pos = info_TL->packet[volume_info->num - 1].end_pos + 1; | |
} | |
info_PK->end_pos = info_PK->start_pos + e - 1; | |
} | |
volume_info->num++; | |
} | |
/* << INDEX */ | |
} | |
} | |
} | |
/* don't forget to release pi */ | |
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) { | |
unsigned char *c = src; | |
opj_pi_iterator_t *pi; | |
int pino, e = 0; | |
int n = 0,i; | |
opj_volume_t *volume = t2->volume; | |
opj_cp_t *cp = t2->cp; | |
/* create a packet iterator */ | |
pi = pi_create(volume, cp, tileno); | |
if(!pi) { | |
/* TODO: throw an error */ | |
return -999; | |
} | |
for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) { | |
while (pi_next(&pi[pino])) { | |
if ((cp->layer==0) || (cp->layer>=((pi[pino].layno)+1))) { | |
e = t2_decode_packet(t2, c, src + len - c, tile, &cp->tcps[tileno], &pi[pino]); | |
} else { | |
e = 0; | |
} | |
/* progression in resolution */ | |
for (i = 0; i < 3; i++){ | |
volume->comps[pi[pino].compno].resno_decoded[i] = (e > 0) ? int_max(pi[pino].resno, volume->comps[pi[pino].compno].resno_decoded[i]) : volume->comps[pi[pino].compno].resno_decoded[i]; | |
} | |
n++; | |
if (e == -999) { /* ADD */ | |
break; | |
} else { | |
opj_event_msg(t2->cinfo, EVT_INFO, " t2_decode_packet: %d bytes decoded\n",e); | |
c += e; | |
} | |
} | |
} | |
/* 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_volume_t *volume, 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->volume = volume; | |
t2->cp = cp; | |
return t2; | |
} | |
void t2_destroy(opj_t2_t *t2) { | |
if(t2) { | |
opj_free(t2); | |
} | |
} | |