-/*\r
- * Copyright (c) 2001-2003, David Janssens\r
- * Copyright (c) 2002-2003, Yannick Verschueren\r
- * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe\r
- * Copyright (c) 2005, Hervé Drolon, FreeImage Team\r
- * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium\r
- * All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'\r
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE\r
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
- * POSSIBILITY OF SUCH DAMAGE.\r
- */\r
-\r
-#include "opj_includes.h"\r
-\r
-/** @defgroup T2 T2 - Implementation of a tier-2 coding */\r
-/*@{*/\r
-\r
-/** @name Local static functions */\r
-/*@{*/\r
-\r
-static void t2_putcommacode(opj_bio_t *bio, int n);\r
-static int t2_getcommacode(opj_bio_t *bio);\r
-/**\r
-Variable length code for signalling delta Zil (truncation point)\r
-@param bio Bit Input/Output component\r
-@param n delta Zil\r
-*/\r
-static void t2_putnumpasses(opj_bio_t *bio, int n);\r
-static int t2_getnumpasses(opj_bio_t *bio);\r
-/**\r
-Encode a packet of a tile to a destination buffer\r
-@param tile Tile for which to write the packets\r
-@param tcp Tile coding parameters\r
-@param pi Packet identity\r
-@param dest Destination buffer\r
-@param len Length of the destination buffer\r
-@param image_info Structure to create an index file\r
-@param tileno Number of the tile encoded\r
-@return \r
-*/\r
-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_image_info_t *image_info, int tileno);\r
-/**\r
-@param seg\r
-@param cblksty\r
-@param first\r
-*/\r
-static void t2_init_seg(opj_tcd_seg_t *seg, int cblksty, int first);\r
-/**\r
-Decode a packet of a tile from a source buffer\r
-@param t2 T2 handle\r
-@param src Source buffer\r
-@param len Length of the source buffer\r
-@param tile Tile for which to write the packets\r
-@param tcp Tile coding parameters\r
-@param pi Packet identity\r
-@return \r
-*/\r
-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);\r
-\r
-/*@}*/\r
-\r
-/*@}*/\r
-\r
-/* ----------------------------------------------------------------------- */\r
-\r
-/* #define RESTART 0x04 */\r
-\r
-static void t2_putcommacode(opj_bio_t *bio, int n) {\r
- while (--n >= 0) {\r
- bio_write(bio, 1, 1);\r
- }\r
- bio_write(bio, 0, 1);\r
-}\r
-\r
-static int t2_getcommacode(opj_bio_t *bio) {\r
- int n;\r
- for (n = 0; bio_read(bio, 1); n++) {\r
- ;\r
- }\r
- return n;\r
-}\r
-\r
-static void t2_putnumpasses(opj_bio_t *bio, int n) {\r
- if (n == 1) {\r
- bio_write(bio, 0, 1);\r
- } else if (n == 2) {\r
- bio_write(bio, 2, 2);\r
- } else if (n <= 5) {\r
- bio_write(bio, 0xc | (n - 3), 4);\r
- } else if (n <= 36) {\r
- bio_write(bio, 0x1e0 | (n - 6), 9);\r
- } else if (n <= 164) {\r
- bio_write(bio, 0xff80 | (n - 37), 16);\r
- }\r
-}\r
-\r
-static int t2_getnumpasses(opj_bio_t *bio) {\r
- int n;\r
- if (!bio_read(bio, 1))\r
- return 1;\r
- if (!bio_read(bio, 1))\r
- return 2;\r
- if ((n = bio_read(bio, 2)) != 3)\r
- return (3 + n);\r
- if ((n = bio_read(bio, 5)) != 31)\r
- return (6 + n);\r
- return (37 + bio_read(bio, 7));\r
-}\r
-\r
-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_image_info_t * image_info, int tileno) {\r
- int bandno, cblkno;\r
- unsigned char *sop = 0, *eph = 0;\r
- unsigned char *c = dest;\r
-\r
- int compno = pi->compno; /* component value */\r
- int resno = pi->resno; /* resolution level value */\r
- int precno = pi->precno; /* precinct value */\r
- int layno = pi->layno; /* quality layer value */\r
-\r
- opj_tcd_tilecomp_t *tilec = &tile->comps[compno];\r
- opj_tcd_resolution_t *res = &tilec->resolutions[resno];\r
- \r
- opj_bio_t *bio = NULL; /* BIO component */\r
- \r
- /* <SOP 0xff91> */\r
- if (tcp->csty & J2K_CP_CSTY_SOP) {\r
- sop = (unsigned char *) opj_malloc(6 * sizeof(unsigned char));\r
- sop[0] = 255;\r
- sop[1] = 145;\r
- sop[2] = 0;\r
- sop[3] = 4;\r
- sop[4] = (image_info->num % 65536) / 256;\r
- sop[5] = (image_info->num % 65536) % 256;\r
- memcpy(c, sop, 6);\r
- opj_free(sop);\r
- c += 6;\r
- }\r
- /* </SOP> */\r
- \r
- if (!layno) {\r
- for (bandno = 0; bandno < res->numbands; bandno++) {\r
- opj_tcd_band_t *band = &res->bands[bandno];\r
- opj_tcd_precinct_t *prc = &band->precincts[precno];\r
- tgt_reset(prc->incltree);\r
- tgt_reset(prc->imsbtree);\r
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {\r
- opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];\r
- cblk->numpasses = 0;\r
- tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps);\r
- }\r
- }\r
- }\r
- \r
- bio = bio_create();\r
- bio_init_enc(bio, c, len);\r
- bio_write(bio, 1, 1); /* Empty header bit */\r
- \r
- /* Writing Packet header */\r
- for (bandno = 0; bandno < res->numbands; bandno++) {\r
- opj_tcd_band_t *band = &res->bands[bandno];\r
- opj_tcd_precinct_t *prc = &band->precincts[precno];\r
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {\r
- opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];\r
- opj_tcd_layer_t *layer = &cblk->layers[layno];\r
- if (!cblk->numpasses && layer->numpasses) {\r
- tgt_setvalue(prc->incltree, cblkno, layno);\r
- }\r
- }\r
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {\r
- opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];\r
- opj_tcd_layer_t *layer = &cblk->layers[layno];\r
- int increment = 0;\r
- int nump = 0;\r
- int len = 0, passno;\r
- /* cblk inclusion bits */\r
- if (!cblk->numpasses) {\r
- tgt_encode(bio, prc->incltree, cblkno, layno + 1);\r
- } else {\r
- bio_write(bio, layer->numpasses != 0, 1);\r
- }\r
- /* if cblk not included, go to the next cblk */\r
- if (!layer->numpasses) {\r
- continue;\r
- }\r
- /* if first instance of cblk --> zero bit-planes information */\r
- if (!cblk->numpasses) {\r
- cblk->numlenbits = 3;\r
- tgt_encode(bio, prc->imsbtree, cblkno, 999);\r
- }\r
- /* number of coding passes included */\r
- t2_putnumpasses(bio, layer->numpasses);\r
- \r
- /* computation of the increase of the length indicator and insertion in the header */\r
- for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) {\r
- opj_tcd_pass_t *pass = &cblk->passes[passno];\r
- nump++;\r
- len += pass->len;\r
- if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {\r
- increment = int_max(increment, int_floorlog2(len) + 1 - (cblk->numlenbits + int_floorlog2(nump)));\r
- len = 0;\r
- nump = 0;\r
- }\r
- }\r
- t2_putcommacode(bio, increment);\r
-\r
- /* computation of the new Length indicator */\r
- cblk->numlenbits += increment;\r
-\r
- /* insertion of the codeword segment length */\r
- for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) {\r
- opj_tcd_pass_t *pass = &cblk->passes[passno];\r
- nump++;\r
- len += pass->len;\r
- if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {\r
- bio_write(bio, len, cblk->numlenbits + int_floorlog2(nump));\r
- len = 0;\r
- nump = 0;\r
- }\r
- }\r
- }\r
- }\r
- \r
- if (bio_flush(bio)) {\r
- return -999; /* modified to eliminate longjmp !! */\r
- }\r
- \r
- c += bio_numbytes(bio);\r
-\r
- bio_destroy(bio);\r
- \r
- /* <EPH 0xff92> */\r
- if (tcp->csty & J2K_CP_CSTY_EPH) {\r
- eph = (unsigned char *) opj_malloc(2 * sizeof(unsigned char));\r
- eph[0] = 255;\r
- eph[1] = 146;\r
- memcpy(c, eph, 2);\r
- opj_free(eph);\r
- c += 2;\r
- }\r
- /* </EPH> */\r
- \r
- /* Writing the packet body */\r
- \r
- for (bandno = 0; bandno < res->numbands; bandno++) {\r
- opj_tcd_band_t *band = &res->bands[bandno];\r
- opj_tcd_precinct_t *prc = &band->precincts[precno];\r
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {\r
- opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];\r
- opj_tcd_layer_t *layer = &cblk->layers[layno];\r
- if (!layer->numpasses) {\r
- continue;\r
- }\r
- if (c + layer->len > dest + len) {\r
- return -999;\r
- }\r
- \r
- memcpy(c, layer->data, layer->len);\r
- cblk->numpasses += layer->numpasses;\r
- c += layer->len;\r
- /* ADD for index Cfr. Marcela --> delta disto by packet */\r
- if(image_info && image_info->index_write && image_info->index_on) {\r
- opj_tile_info_t *info_TL = &image_info->tile[tileno];\r
- opj_packet_info_t *info_PK = &info_TL->packet[image_info->num];\r
- info_PK->disto += layer->disto;\r
- if (image_info->D_max < info_PK->disto) {\r
- image_info->D_max = info_PK->disto;\r
- }\r
- }\r
- /* </ADD> */\r
- }\r
- }\r
- \r
- return (c - dest);\r
-}\r
-\r
-static void t2_init_seg(opj_tcd_seg_t * seg, int cblksty, int first) {\r
- seg->numpasses = 0;\r
- seg->len = 0;\r
- if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {\r
- seg->maxpasses = 1;\r
- }\r
- else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {\r
- if (first) {\r
- seg->maxpasses = 10;\r
- } else {\r
- seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;\r
- }\r
- } else {\r
- seg->maxpasses = 109;\r
- }\r
-}\r
-\r
-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) {\r
- int bandno, cblkno;\r
- unsigned char *c = src;\r
-\r
- opj_cp_t *cp = t2->cp;\r
-\r
- int compno = pi->compno; /* component value */\r
- int resno = pi->resno; /* resolution level value */\r
- int precno = pi->precno; /* precinct value */\r
- int layno = pi->layno; /* quality layer value */\r
-\r
- opj_tcd_tilecomp_t *tilec = &tile->comps[compno];\r
- opj_tcd_resolution_t *res = &tilec->resolutions[resno];\r
- \r
- unsigned char *hd = NULL;\r
- int present;\r
- \r
- opj_bio_t *bio = NULL; /* BIO component */\r
- \r
- if (layno == 0) {\r
- for (bandno = 0; bandno < res->numbands; bandno++) {\r
- opj_tcd_band_t *band = &res->bands[bandno];\r
- opj_tcd_precinct_t *prc = &band->precincts[precno];\r
- \r
- if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;\r
- \r
- tgt_reset(prc->incltree);\r
- tgt_reset(prc->imsbtree);\r
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {\r
- opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];\r
- cblk->numsegs = 0;\r
- }\r
- }\r
- }\r
- \r
- /* SOP markers */\r
- \r
- if (tcp->csty & J2K_CP_CSTY_SOP) {\r
- if ((*c) != 0xff || (*(c + 1) != 0x91)) {\r
- opj_event_msg(t2->cinfo, EVT_WARNING, "Expected SOP marker\n");\r
- } else {\r
- c += 6;\r
- }\r
- \r
- /** TODO : check the Nsop value */\r
- }\r
- \r
- /* \r
- When the marker PPT/PPM is used the packet header are store in PPT/PPM marker\r
- This part deal with this caracteristic\r
- step 1: Read packet header in the saved structure\r
- step 2: Return to codestream for decoding \r
- */\r
-\r
- bio = bio_create();\r
- \r
- if (cp->ppm == 1) { /* PPM */\r
- hd = cp->ppm_data;\r
- bio_init_dec(bio, hd, cp->ppm_len);\r
- } else if (tcp->ppt == 1) { /* PPT */\r
- hd = tcp->ppt_data;\r
- bio_init_dec(bio, hd, tcp->ppt_len);\r
- } else { /* Normal Case */\r
- hd = c;\r
- bio_init_dec(bio, hd, src+len-hd);\r
- }\r
- \r
- present = bio_read(bio, 1);\r
- \r
- if (!present) {\r
- bio_inalign(bio);\r
- hd += bio_numbytes(bio);\r
- bio_destroy(bio);\r
- \r
- /* EPH markers */\r
- \r
- if (tcp->csty & J2K_CP_CSTY_EPH) {\r
- if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {\r
- printf("Error : expected EPH marker\n");\r
- } else {\r
- hd += 2;\r
- }\r
- }\r
- \r
- if (cp->ppm == 1) { /* PPM case */\r
- cp->ppm_len += cp->ppm_data-hd;\r
- cp->ppm_data = hd;\r
- return (c - src);\r
- }\r
- if (tcp->ppt == 1) { /* PPT case */\r
- tcp->ppt_len+=tcp->ppt_data-hd;\r
- tcp->ppt_data = hd;\r
- return (c - src);\r
- }\r
- \r
- return (hd - src);\r
- }\r
- \r
- for (bandno = 0; bandno < res->numbands; bandno++) {\r
- opj_tcd_band_t *band = &res->bands[bandno];\r
- opj_tcd_precinct_t *prc = &band->precincts[precno];\r
- \r
- if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;\r
- \r
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {\r
- int included, increment, n;\r
- opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];\r
- opj_tcd_seg_t *seg = NULL;\r
- /* if cblk not yet included before --> inclusion tagtree */\r
- if (!cblk->numsegs) {\r
- included = tgt_decode(bio, prc->incltree, cblkno, layno + 1);\r
- /* else one bit */\r
- } else {\r
- included = bio_read(bio, 1);\r
- }\r
- /* if cblk not included */\r
- if (!included) {\r
- cblk->numnewpasses = 0;\r
- continue;\r
- }\r
- /* if cblk not yet included --> zero-bitplane tagtree */\r
- if (!cblk->numsegs) {\r
- int i, numimsbs;\r
- for (i = 0; !tgt_decode(bio, prc->imsbtree, cblkno, i); i++) {\r
- ;\r
- }\r
- numimsbs = i - 1;\r
- cblk->numbps = band->numbps - numimsbs;\r
- cblk->numlenbits = 3;\r
- }\r
- /* number of coding passes */\r
- cblk->numnewpasses = t2_getnumpasses(bio);\r
- increment = t2_getcommacode(bio);\r
- /* length indicator increment */\r
- cblk->numlenbits += increment;\r
- if (!cblk->numsegs) {\r
- seg = &cblk->segs[0];\r
- t2_init_seg(seg, tcp->tccps[compno].cblksty, 1);\r
- } else {\r
- seg = &cblk->segs[cblk->numsegs - 1];\r
- if (seg->numpasses == seg->maxpasses) {\r
- t2_init_seg(++seg, tcp->tccps[compno].cblksty, 0);\r
- }\r
- }\r
- n = cblk->numnewpasses;\r
- \r
- do {\r
- seg->numnewpasses = int_min(seg->maxpasses - seg->numpasses, n);\r
- seg->newlen = bio_read(bio, cblk->numlenbits + int_floorlog2(seg->numnewpasses));\r
- n -= seg->numnewpasses;\r
- if (n > 0) {\r
- t2_init_seg(++seg, tcp->tccps[compno].cblksty, 0);\r
- }\r
- } while (n > 0);\r
- }\r
- }\r
- \r
- if (bio_inalign(bio)) {\r
- bio_destroy(bio);\r
- return -999;\r
- }\r
- \r
- hd += bio_numbytes(bio);\r
- bio_destroy(bio);\r
- \r
- /* EPH markers */\r
- if (tcp->csty & J2K_CP_CSTY_EPH) {\r
- if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {\r
- opj_event_msg(t2->cinfo, EVT_ERROR, "Expected EPH marker\n");\r
- } else {\r
- hd += 2;\r
- }\r
- }\r
- \r
- if (cp->ppm==1) {\r
- cp->ppm_len+=cp->ppm_data-hd;\r
- cp->ppm_data = hd;\r
- } else if (tcp->ppt == 1) {\r
- tcp->ppt_len+=tcp->ppt_data-hd;\r
- tcp->ppt_data = hd;\r
- } else {\r
- c=hd;\r
- }\r
- \r
- for (bandno = 0; bandno < res->numbands; bandno++) {\r
- opj_tcd_band_t *band = &res->bands[bandno];\r
- opj_tcd_precinct_t *prc = &band->precincts[precno];\r
- \r
- if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;\r
- \r
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {\r
- opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];\r
- opj_tcd_seg_t *seg = NULL;\r
- if (!cblk->numnewpasses)\r
- continue;\r
- if (!cblk->numsegs) {\r
- seg = &cblk->segs[0];\r
- cblk->numsegs++;\r
- cblk->len = 0;\r
- } else {\r
- seg = &cblk->segs[cblk->numsegs - 1];\r
- if (seg->numpasses == seg->maxpasses) {\r
- seg++;\r
- cblk->numsegs++;\r
- }\r
- }\r
- \r
- do {\r
- if (c + seg->newlen > src + len) {\r
- return -999;\r
- }\r
- \r
- memcpy(cblk->data + cblk->len, c, seg->newlen);\r
- if (seg->numpasses == 0) {\r
- seg->data = cblk->data + cblk->len;\r
- }\r
- c += seg->newlen;\r
- cblk->len += seg->newlen;\r
- seg->len += seg->newlen;\r
- seg->numpasses += seg->numnewpasses;\r
- cblk->numnewpasses -= seg->numnewpasses;\r
- if (cblk->numnewpasses > 0) {\r
- seg++;\r
- cblk->numsegs++;\r
- }\r
- } while (cblk->numnewpasses > 0);\r
- }\r
- }\r
- \r
- return (c - src);\r
-}\r
-\r
-/* ----------------------------------------------------------------------- */\r
-\r
-int t2_encode_packets(opj_t2_t* t2, int tileno, opj_tcd_tile_t *tile, int maxlayers, unsigned char *dest, int len, opj_image_info_t *image_info) {\r
- unsigned char *c = dest;\r
- int e = 0;\r
- opj_pi_iterator_t *pi = NULL;\r
- int pino;\r
-\r
- opj_image_t *image = t2->image;\r
- opj_cp_t *cp = t2->cp;\r
- \r
- /* create a packet iterator */\r
- pi = pi_create(image, cp, tileno);\r
- if(!pi) {\r
- /* TODO: throw an error */\r
- return -999;\r
- }\r
- \r
- if(image_info) {\r
- image_info->num = 0;\r
- }\r
- \r
- for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) {\r
- while (pi_next(&pi[pino])) {\r
- if (pi[pino].layno < maxlayers) {\r
- e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[pino], c, dest + len - c, image_info, tileno);\r
- if (e == -999) {\r
- break;\r
- } else {\r
- c += e;\r
- }\r
- \r
- /* INDEX >> */\r
- if(image_info && image_info->index_on) {\r
- if(image_info->index_write) {\r
- opj_tile_info_t *info_TL = &image_info->tile[tileno];\r
- opj_packet_info_t *info_PK = &info_TL->packet[image_info->num];\r
- if (!image_info->num) {\r
- info_PK->start_pos = info_TL->end_header + 1;\r
- } else {\r
- info_PK->start_pos = info_TL->packet[image_info->num - 1].end_pos + 1;\r
- }\r
- info_PK->end_pos = info_PK->start_pos + e - 1;\r
- }\r
-\r
- image_info->num++;\r
- }\r
- /* << INDEX */\r
- }\r
- }\r
- }\r
-\r
- /* don't forget to release pi */\r
- pi_destroy(pi, cp, tileno);\r
- \r
- if (e == -999) {\r
- return e;\r
- }\r
-\r
- return (c - dest);\r
-}\r
-\r
-int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj_tcd_tile_t *tile) {\r
- unsigned char *c = src;\r
- opj_pi_iterator_t *pi;\r
- int pino, e = 0;\r
- int n = 0;\r
-\r
- opj_image_t *image = t2->image;\r
- opj_cp_t *cp = t2->cp;\r
- \r
- /* create a packet iterator */\r
- pi = pi_create(image, cp, tileno);\r
- if(!pi) {\r
- /* TODO: throw an error */\r
- return -999;\r
- }\r
- \r
- for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) {\r
- while (pi_next(&pi[pino])) {\r
- if ((cp->layer==0) || (cp->layer>=((pi[pino].layno)+1))) {\r
- e = t2_decode_packet(t2, c, src + len - c, tile, &cp->tcps[tileno], &pi[pino]);\r
- } else {\r
- e = 0;\r
- }\r
- \r
- /* progression in resolution */\r
- image->comps[pi[pino].compno].resno_decoded = \r
- (e > 0) ? \r
- int_max(pi[pino].resno, image->comps[pi[pino].compno].resno_decoded) \r
- : image->comps[pi[pino].compno].resno_decoded;\r
- n++;\r
- \r
- if (e == -999) { /* ADD */\r
- break;\r
- } else {\r
- c += e;\r
- }\r
- }\r
- }\r
-\r
- /* don't forget to release pi */\r
- pi_destroy(pi, cp, tileno);\r
- \r
- if (e == -999) {\r
- return e;\r
- }\r
- \r
- return (c - src);\r
-}\r
-\r
-/* ----------------------------------------------------------------------- */\r
-\r
-opj_t2_t* t2_create(opj_common_ptr cinfo, opj_image_t *image, opj_cp_t *cp) {\r
- /* create the tcd structure */\r
- opj_t2_t *t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));\r
- if(!t2) return NULL;\r
- t2->cinfo = cinfo;\r
- t2->image = image;\r
- t2->cp = cp;\r
-\r
- return t2;\r
-}\r
-\r
-void t2_destroy(opj_t2_t *t2) {\r
- if(t2) {\r
- opj_free(t2);\r
- }\r
-}\r
-\r
+/*
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
+ * Copyright (c) 2005, Hervé 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 image_info Structure to create an index file
+@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_image_info_t *image_info, int tileno);
+/**
+@param seg
+@param cblksty
+@param first
+*/
+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
+*/
+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);
+
+/*@}*/
+
+/*@}*/
+
+/* ----------------------------------------------------------------------- */
+
+/* #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_image_info_t * image_info, int tileno) {
+ 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 & J2K_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] = (image_info->num % 65536) / 256;
+ sop[5] = (image_info->num % 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->cw * prc->ch; 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->cw * prc->ch; 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->cw * prc->ch; 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 & J2K_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->cw * prc->ch; 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(image_info && image_info->index_write && image_info->index_on) {
+ opj_tile_info_t *info_TL = &image_info->tile[tileno];
+ opj_packet_info_t *info_PK = &info_TL->packet[image_info->num];
+ info_PK->disto += layer->disto;
+ if (image_info->D_max < info_PK->disto) {
+ image_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 & 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;
+ }
+}
+
+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) {
+ 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)) continue;
+
+ tgt_reset(prc->incltree);
+ tgt_reset(prc->imsbtree);
+ for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+ opj_tcd_cblk_t *cblk = &prc->cblks[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;
+ }
+ }
+
+ 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;
+ 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 & J2K_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)) continue;
+
+ for (cblkno = 0; cblkno < prc->cw * prc->ch; 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_image_info_t *image_info) {
+ unsigned char *c = dest;
+ int e = 0;
+ opj_pi_iterator_t *pi = NULL;
+ int pino;
+
+ opj_image_t *image = t2->image;
+ opj_cp_t *cp = t2->cp;
+
+ /* create a packet iterator */
+ pi = pi_create(image, cp, tileno);
+ if(!pi) {
+ /* TODO: throw an error */
+ return -999;
+ }
+
+ if(image_info) {
+ image_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, image_info, tileno);
+ if (e == -999) {
+ break;
+ } else {
+ c += e;
+ }
+
+ /* INDEX >> */
+ if(image_info && image_info->index_on) {
+ if(image_info->index_write) {
+ opj_tile_info_t *info_TL = &image_info->tile[tileno];
+ opj_packet_info_t *info_PK = &info_TL->packet[image_info->num];
+ if (!image_info->num) {
+ info_PK->start_pos = info_TL->end_header + 1;
+ } else {
+ info_PK->start_pos = info_TL->packet[image_info->num - 1].end_pos + 1;
+ }
+ info_PK->end_pos = info_PK->start_pos + e - 1;
+ }
+
+ image_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;
+
+ opj_image_t *image = t2->image;
+ opj_cp_t *cp = t2->cp;
+
+ /* create a packet iterator */
+ pi = pi_create(image, 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 */
+ 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++;
+
+ if (e == -999) { /* ADD */
+ break;
+ } else {
+ 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_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);
+ }
+}
+
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff