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Diffstat (limited to 'extern/libopenjpeg/t2.c')
| -rw-r--r-- | extern/libopenjpeg/t2.c | 825 |
1 files changed, 0 insertions, 825 deletions
diff --git a/extern/libopenjpeg/t2.c b/extern/libopenjpeg/t2.c deleted file mode 100644 index 2585c3d56a6..00000000000 --- a/extern/libopenjpeg/t2.c +++ /dev/null @@ -1,825 +0,0 @@ -/* - * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium - * Copyright (c) 2002-2007, Professor Benoit Macq - * Copyright (c) 2001-2003, David Janssens - * Copyright (c) 2002-2003, Yannick Verschueren - * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe - * Copyright (c) 2005, Herve Drolon, FreeImage Team - * 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" -#include <assert.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 cstr_info Codestream information structure -@param tileno Number of the tile encoded -@return -*/ -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); -/** -@param cblk -@param index -@param cblksty -@param first -*/ -static opj_bool t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, 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 -@param pack_info Packet information -@return -*/ -static 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, opj_packet_info_t *pack_info); - -/*@}*/ - -/*@}*/ - -/* ----------------------------------------------------------------------- */ - -/* #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 length, opj_codestream_info_t *cstr_info, int tileno) { - int bandno, cblkno; - 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 & J2K_CP_CSTY_SOP) { - c[0] = 255; - c[1] = 145; - c[2] = 0; - c[3] = 4; - c[4] = (unsigned char)((tile->packno % 65536) / 256); - c[5] = (unsigned char)((tile->packno % 65536) % 256); - 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->cw * prc->ch; cblkno++) { - opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno]; - cblk->numpasses = 0; - tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps); - } - } - } - - bio = bio_create(); - bio_init_enc(bio, c, length); - 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->cw * prc->ch; cblkno++) { - opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[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->cw * prc->ch; cblkno++) { - opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[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)) { - bio_destroy(bio); - return -999; /* modified to eliminate longjmp !! */ - } - - c += bio_numbytes(bio); - bio_destroy(bio); - - /* <EPH 0xff92> */ - if (tcp->csty & J2K_CP_CSTY_EPH) { - c[0] = 255; - c[1] = 146; - c += 2; - } - /* </EPH> */ - - /* << 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(cstr_info && cstr_info->index_write) { - opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno]; - info_PK->end_ph_pos = (int)(c - dest); - } - /* INDEX >> */ - - /* 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->cw * prc->ch; cblkno++) { - opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno]; - opj_tcd_layer_t *layer = &cblk->layers[layno]; - if (!layer->numpasses) { - continue; - } - if (c + layer->len > dest + length) { - return -999; - } - - memcpy(c, layer->data, layer->len); - cblk->numpasses += layer->numpasses; - c += layer->len; - /* << INDEX */ - if(cstr_info && cstr_info->index_write) { - opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno]; - info_PK->disto += layer->disto; - if (cstr_info->D_max < info_PK->disto) { - cstr_info->D_max = info_PK->disto; - } - } - /* INDEX >> */ - } - } - - return (c - dest); -} - -static opj_bool t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first) { - opj_tcd_seg_t* seg; - opj_tcd_seg_t* segs; - segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, (index + 1) * sizeof(opj_tcd_seg_t)); - - if (segs == NULL) - { - return OPJ_FALSE; - } - cblk->segs = segs; - - seg = &cblk->segs[index]; - seg->data = NULL; - seg->dataindex = 0; - seg->numpasses = 0; - seg->len = 0; - if (cblksty & J2K_CCP_CBLKSTY_TERMALL) { - seg->maxpasses = 1; - } - else if (cblksty & J2K_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; - } - - return OPJ_TRUE; -} - -static 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, opj_packet_info_t *pack_info) { - 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 */ - - unsigned char *hd = NULL; - int present; - - opj_bio_t *bio = NULL; /* BIO component */ - - opj_tcd_resolution_t* res; - assert(&tile->comps[compno] != NULL); - res = &tile->comps[compno].resolutions[resno]; - - 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)) continue; - - tgt_reset(prc->incltree); - tgt_reset(prc->imsbtree); - for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) { - opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno]; - cblk->numsegs = 0; - } - } - } - - /* SOP markers */ - - if (tcp->csty & J2K_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 & J2K_CP_CSTY_EPH) { - if ((*hd) != 0xff || (*(hd + 1) != 0x92)) { - printf("Error : expected EPH marker\n"); - } 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)(c - src); - } - /* INDEX >> */ - - 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)) continue; - - for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) { - int included, increment, n, segno; - opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno]; - /* 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; - segno = 0; - if (!cblk->numsegs) { - if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 1)) - { - opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n"); - bio_destroy(bio); - return -999; - } - } else { - segno = cblk->numsegs - 1; - if (cblk->segs[segno].numpasses == cblk->segs[segno].maxpasses) { - ++segno; - if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0)) - { - opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n"); - bio_destroy(bio); - return -999; - } - } - } - 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; - if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0)) - { - opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n"); - bio_destroy(bio); - return -999; - } - } - } 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) - { - pi_destroy(pi, cp, tileno); - 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*/ - info_TL->tp[curtp].tp_start_pack = tp_start_packno; - 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*/ - cstr_info->tile[tileno].tp[curtp].tp_start_pack = tp_start_packno; - } - /* << 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); - } -} - - - - - |