src/lib/openjp2/t2.c

   1 /*
   2  * The copyright in this software is being made available under the 2-clauses
   3  * BSD License, included below. This software may be subject to other third
   4  * party and contributor rights, including patent rights, and no such rights
   5  * are granted under this license.
   6  *
   7  * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
   8  * Copyright (c) 2002-2014, Professor Benoit Macq
   9  * Copyright (c) 2001-2003, David Janssens
  10  * Copyright (c) 2002-2003, Yannick Verschueren
  11  * Copyright (c) 2003-2007, Francois-Olivier Devaux
  12  * Copyright (c) 2003-2014, Antonin Descampe
  13  * Copyright (c) 2005, Herve Drolon, FreeImage Team
  14  * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR
  15  * Copyright (c) 2012, CS Systemes d'Information, France
  16  * Copyright (c) 2017, IntoPIX SA <support@intopix.com>
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms, with or without
  20  * modification, are permitted provided that the following conditions
  21  * are met:
  22  * 1. Redistributions of source code must retain the above copyright
  23  *    notice, this list of conditions and the following disclaimer.
  24  * 2. Redistributions in binary form must reproduce the above copyright
  25  *    notice, this list of conditions and the following disclaimer in the
  26  *    documentation and/or other materials provided with the distribution.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  29  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  32  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  38  * POSSIBILITY OF SUCH DAMAGE.
  39  */
  40
  41 #include "opj_includes.h"
  42 #include "opj_common.h"
  43
  44
  45 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
  46 /*@{*/
  47
  48 /** @name Local static functions */
  49 /*@{*/
  50
  51 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n);
  52
  53 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio);
  54 /**
  55 Variable length code for signalling delta Zil (truncation point)
  56 @param bio  Bit Input/Output component
  57 @param n    delta Zil
  58 */
  59 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
  60 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio);
  61
  62 /**
  63 Encode a packet of a tile to a destination buffer
  64 @param tileno Number of the tile encoded
  65 @param tile Tile for which to write the packets
  66 @param tcp Tile coding parameters
  67 @param pi Packet identity
  68 @param dest Destination buffer
  69 @param p_data_written   FIXME DOC
  70 @param len Length of the destination buffer
  71 @param cstr_info Codestream information structure
  72 @param p_t2_mode If == THRESH_CALC In Threshold calculation ,If == FINAL_PASS Final pass
  73 @param p_manager the user event manager
  74 @return
  75 */
  76 static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno,
  77                                      opj_tcd_tile_t *tile,
  78                                      opj_tcp_t *tcp,
  79                                      opj_pi_iterator_t *pi,
  80                                      OPJ_BYTE *dest,
  81                                      OPJ_UINT32 * p_data_written,
  82                                      OPJ_UINT32 len,
  83                                      opj_codestream_info_t *cstr_info,
  84                                      J2K_T2_MODE p_t2_mode,
  85                                      opj_event_mgr_t *p_manager);
  86
  87 /**
  88 Decode a packet of a tile from a source buffer
  89 @param t2 T2 handle
  90 @param tile Tile for which to write the packets
  91 @param tcp Tile coding parameters
  92 @param pi Packet identity
  93 @param src Source buffer
  94 @param data_read   FIXME DOC
  95 @param max_length  FIXME DOC
  96 @param pack_info Packet information
  97 @param p_manager the user event manager
  98
  99 @return  FIXME DOC
 100 */
 101 static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* t2,
 102                                      opj_tcd_tile_t *tile,
 103                                      opj_tcp_t *tcp,
 104                                      opj_pi_iterator_t *pi,
 105                                      OPJ_BYTE *src,
 106                                      OPJ_UINT32 * data_read,
 107                                      OPJ_UINT32 max_length,
 108                                      opj_packet_info_t *pack_info,
 109                                      opj_event_mgr_t *p_manager);
 110
 111 static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
 112                                    opj_tcd_tile_t *p_tile,
 113                                    opj_tcp_t *p_tcp,
 114                                    opj_pi_iterator_t *p_pi,
 115                                    OPJ_BYTE *p_src,
 116                                    OPJ_UINT32 * p_data_read,
 117                                    OPJ_UINT32 p_max_length,
 118                                    opj_packet_info_t *p_pack_info,
 119                                    opj_event_mgr_t *p_manager);
 120
 121 static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
 122         opj_tcd_tile_t *p_tile,
 123         opj_tcp_t *p_tcp,
 124         opj_pi_iterator_t *p_pi,
 125         OPJ_BOOL * p_is_data_present,
 126         OPJ_BYTE *p_src_data,
 127         OPJ_UINT32 * p_data_read,
 128         OPJ_UINT32 p_max_length,
 129         opj_packet_info_t *p_pack_info,
 130         opj_event_mgr_t *p_manager);
 131
 132 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
 133                                         opj_tcd_tile_t *p_tile,
 134                                         opj_pi_iterator_t *p_pi,
 135                                         OPJ_BYTE *p_src_data,
 136                                         OPJ_UINT32 * p_data_read,
 137                                         OPJ_UINT32 p_max_length,
 138                                         opj_packet_info_t *pack_info,
 139                                         opj_event_mgr_t *p_manager);
 140
 141 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
 142                                         opj_tcd_tile_t *p_tile,
 143                                         opj_pi_iterator_t *p_pi,
 144                                         OPJ_UINT32 * p_data_read,
 145                                         OPJ_UINT32 p_max_length,
 146                                         opj_packet_info_t *pack_info,
 147                                         opj_event_mgr_t *p_manager);
 148
 149 /**
 150 @param cblk
 151 @param index
 152 @param cblksty
 153 @param first
 154 */
 155 static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
 156                                 OPJ_UINT32 index,
 157                                 OPJ_UINT32 cblksty,
 158                                 OPJ_UINT32 first);
 159
 160 /*@}*/
 161
 162 /*@}*/
 163
 164 /* ----------------------------------------------------------------------- */
 165
 166 /* #define RESTART 0x04 */
 167 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n)
 168 {
 169     while (--n >= 0) {
 170         opj_bio_write(bio, 1, 1);
 171     }
 172     opj_bio_write(bio, 0, 1);
 173 }
 174
 175 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio)
 176 {
 177     OPJ_UINT32 n = 0;
 178     while (opj_bio_read(bio, 1)) {
 179         ++n;
 180     }
 181     return n;
 182 }
 183
 184 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n)
 185 {
 186     if (n == 1) {
 187         opj_bio_write(bio, 0, 1);
 188     } else if (n == 2) {
 189         opj_bio_write(bio, 2, 2);
 190     } else if (n <= 5) {
 191         opj_bio_write(bio, 0xc | (n - 3), 4);
 192     } else if (n <= 36) {
 193         opj_bio_write(bio, 0x1e0 | (n - 6), 9);
 194     } else if (n <= 164) {
 195         opj_bio_write(bio, 0xff80 | (n - 37), 16);
 196     }
 197 }
 198
 199 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio)
 200 {
 201     OPJ_UINT32 n;
 202     if (!opj_bio_read(bio, 1)) {
 203         return 1;
 204     }
 205     if (!opj_bio_read(bio, 1)) {
 206         return 2;
 207     }
 208     if ((n = opj_bio_read(bio, 2)) != 3) {
 209         return (3 + n);
 210     }
 211     if ((n = opj_bio_read(bio, 5)) != 31) {
 212         return (6 + n);
 213     }
 214     return (37 + opj_bio_read(bio, 7));
 215 }
 216
 217 /* ----------------------------------------------------------------------- */
 218
 219 OPJ_BOOL opj_t2_encode_packets(opj_t2_t* p_t2,
 220                                OPJ_UINT32 p_tile_no,
 221                                opj_tcd_tile_t *p_tile,
 222                                OPJ_UINT32 p_maxlayers,
 223                                OPJ_BYTE *p_dest,
 224                                OPJ_UINT32 * p_data_written,
 225                                OPJ_UINT32 p_max_len,
 226                                opj_codestream_info_t *cstr_info,
 227                                opj_tcd_marker_info_t* p_marker_info,
 228                                OPJ_UINT32 p_tp_num,
 229                                OPJ_INT32 p_tp_pos,
 230                                OPJ_UINT32 p_pino,
 231                                J2K_T2_MODE p_t2_mode,
 232                                opj_event_mgr_t *p_manager)
 233 {
 234     OPJ_BYTE *l_current_data = p_dest;
 235     OPJ_UINT32 l_nb_bytes = 0;
 236     OPJ_UINT32 compno;
 237     OPJ_UINT32 poc;
 238     opj_pi_iterator_t *l_pi = 00;
 239     opj_pi_iterator_t *l_current_pi = 00;
 240     opj_image_t *l_image = p_t2->image;
 241     opj_cp_t *l_cp = p_t2->cp;
 242     opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
 243     OPJ_UINT32 pocno = (l_cp->rsiz == OPJ_PROFILE_CINEMA_4K) ? 2 : 1;
 244     OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ?
 245                             l_image->numcomps : 1;
 246     OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
 247
 248     l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode, p_manager);
 249     if (!l_pi) {
 250         return OPJ_FALSE;
 251     }
 252
 253     * p_data_written = 0;
 254
 255     if (p_t2_mode == THRESH_CALC) { /* Calculating threshold */
 256         l_current_pi = l_pi;
 257
 258         for (compno = 0; compno < l_max_comp; ++compno) {
 259             OPJ_UINT32 l_comp_len = 0;
 260             l_current_pi = l_pi;
 261
 262             for (poc = 0; poc < pocno ; ++poc) {
 263                 OPJ_UINT32 l_tp_num = compno;
 264
 265                 /* TODO MSD : check why this function cannot fail (cf. v1) */
 266                 opj_pi_create_encode(l_pi, l_cp, p_tile_no, poc, l_tp_num, p_tp_pos, p_t2_mode);
 267
 268                 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
 269                     /* TODO ADE : add an error */
 270                     opj_pi_destroy(l_pi, l_nb_pocs);
 271                     return OPJ_FALSE;
 272                 }
 273                 while (opj_pi_next(l_current_pi)) {
 274                     if (l_current_pi->layno < p_maxlayers) {
 275                         l_nb_bytes = 0;
 276
 277                         if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi,
 278                                                    l_current_data, &l_nb_bytes,
 279                                                    p_max_len, cstr_info,
 280                                                    p_t2_mode,
 281                                                    p_manager)) {
 282                             opj_pi_destroy(l_pi, l_nb_pocs);
 283                             return OPJ_FALSE;
 284                         }
 285
 286                         l_comp_len += l_nb_bytes;
 287                         l_current_data += l_nb_bytes;
 288                         p_max_len -= l_nb_bytes;
 289
 290                         * p_data_written += l_nb_bytes;
 291                     }
 292                 }
 293
 294                 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
 295                     if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
 296                         opj_pi_destroy(l_pi, l_nb_pocs);
 297                         return OPJ_FALSE;
 298                     }
 299                 }
 300
 301                 ++l_current_pi;
 302             }
 303         }
 304     } else { /* t2_mode == FINAL_PASS  */
 305         opj_pi_create_encode(l_pi, l_cp, p_tile_no, p_pino, p_tp_num, p_tp_pos,
 306                              p_t2_mode);
 307
 308         l_current_pi = &l_pi[p_pino];
 309         if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
 310             /* TODO ADE : add an error */
 311             opj_pi_destroy(l_pi, l_nb_pocs);
 312             return OPJ_FALSE;
 313         }
 314
 315         if (p_marker_info && p_marker_info->need_PLT) {
 316             /* One time use intended */
 317             assert(p_marker_info->packet_count == 0);
 318             assert(p_marker_info->p_packet_size == NULL);
 319
 320             p_marker_info->p_packet_size = (OPJ_UINT32*) opj_malloc(
 321                                                opj_get_encoding_packet_count(l_image, l_cp, p_tile_no) * sizeof(OPJ_UINT32));
 322             if (p_marker_info->p_packet_size == NULL) {
 323                 opj_pi_destroy(l_pi, l_nb_pocs);
 324                 return OPJ_FALSE;
 325             }
 326         }
 327
 328         while (opj_pi_next(l_current_pi)) {
 329             if (l_current_pi->layno < p_maxlayers) {
 330                 l_nb_bytes = 0;
 331
 332                 if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi,
 333                                            l_current_data, &l_nb_bytes, p_max_len,
 334                                            cstr_info, p_t2_mode, p_manager)) {
 335                     opj_pi_destroy(l_pi, l_nb_pocs);
 336                     return OPJ_FALSE;
 337                 }
 338
 339                 l_current_data += l_nb_bytes;
 340                 p_max_len -= l_nb_bytes;
 341
 342                 * p_data_written += l_nb_bytes;
 343
 344                 if (p_marker_info && p_marker_info->need_PLT) {
 345                     p_marker_info->p_packet_size[p_marker_info->packet_count] = l_nb_bytes;
 346                     p_marker_info->packet_count ++;
 347                 }
 348
 349                 /* INDEX >> */
 350                 if (cstr_info) {
 351                     if (cstr_info->index_write) {
 352                         opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
 353                         opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
 354                         if (!cstr_info->packno) {
 355                             info_PK->start_pos = info_TL->end_header + 1;
 356                         } else {
 357                             info_PK->start_pos = ((l_cp->m_specific_param.m_enc.m_tp_on | l_tcp->POC) &&
 358                                                   info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno -
 359                                                                             1].end_pos + 1;
 360                         }
 361                         info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
 362                         info_PK->end_ph_pos += info_PK->start_pos -
 363                                                1;  /* End of packet header which now only represents the distance
 364                                                                                                                                                                                                                                                    to start of packet is incremented by value of start of packet*/
 365                     }
 366
 367                     cstr_info->packno++;
 368                 }
 369                 /* << INDEX */
 370                 ++p_tile->packno;
 371             }
 372         }
 373     }
 374
 375     opj_pi_destroy(l_pi, l_nb_pocs);
 376
 377     return OPJ_TRUE;
 378 }
 379
 380 /* see issue 80 */
 381 #if 0
 382 #define JAS_FPRINTF fprintf
 383 #else
 384 /* issue 290 */
 385 static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
 386 {
 387     (void)file;
 388     (void)format;
 389 }
 390 #define JAS_FPRINTF opj_null_jas_fprintf
 391 #endif
 392
 393 OPJ_BOOL opj_t2_decode_packets(opj_tcd_t* tcd,
 394                                opj_t2_t *p_t2,
 395                                OPJ_UINT32 p_tile_no,
 396                                opj_tcd_tile_t *p_tile,
 397                                OPJ_BYTE *p_src,
 398                                OPJ_UINT32 * p_data_read,
 399                                OPJ_UINT32 p_max_len,
 400                                opj_codestream_index_t *p_cstr_index,
 401                                opj_event_mgr_t *p_manager)
 402 {
 403     OPJ_BYTE *l_current_data = p_src;
 404     opj_pi_iterator_t *l_pi = 00;
 405     OPJ_UINT32 pino;
 406     opj_image_t *l_image = p_t2->image;
 407     opj_cp_t *l_cp = p_t2->cp;
 408     opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
 409     OPJ_UINT32 l_nb_bytes_read;
 410     OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
 411     opj_pi_iterator_t *l_current_pi = 00;
 412 #ifdef TODO_MSD
 413     OPJ_UINT32 curtp = 0;
 414     OPJ_UINT32 tp_start_packno;
 415 #endif
 416     opj_packet_info_t *l_pack_info = 00;
 417     opj_image_comp_t* l_img_comp = 00;
 418
 419     OPJ_ARG_NOT_USED(p_cstr_index);
 420
 421 #ifdef TODO_MSD
 422     if (p_cstr_index) {
 423         l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
 424     }
 425 #endif
 426
 427     /* create a packet iterator */
 428     l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no, p_manager);
 429     if (!l_pi) {
 430         return OPJ_FALSE;
 431     }
 432
 433
 434     l_current_pi = l_pi;
 435
 436     for (pino = 0; pino <= l_tcp->numpocs; ++pino) {
 437
 438         /* if the resolution needed is too low, one dim of the tilec could be equal to zero
 439          * and no packets are used to decode this resolution and
 440          * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
 441          * and no l_img_comp->resno_decoded are computed
 442          */
 443         OPJ_BOOL* first_pass_failed = NULL;
 444
 445         if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
 446             /* TODO ADE : add an error */
 447             opj_pi_destroy(l_pi, l_nb_pocs);
 448             return OPJ_FALSE;
 449         }
 450
 451         first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
 452         if (!first_pass_failed) {
 453             opj_pi_destroy(l_pi, l_nb_pocs);
 454             return OPJ_FALSE;
 455         }
 456         memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
 457
 458         while (opj_pi_next(l_current_pi)) {
 459             OPJ_BOOL skip_packet = OPJ_FALSE;
 460             JAS_FPRINTF(stderr,
 461                         "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
 462                         l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno,
 463                         l_current_pi->precno, l_current_pi->layno);
 464
 465             /* If the packet layer is greater or equal than the maximum */
 466             /* number of layers, skip the packet */
 467             if (l_current_pi->layno >= l_tcp->num_layers_to_decode) {
 468                 skip_packet = OPJ_TRUE;
 469             }
 470             /* If the packet resolution number is greater than the minimum */
 471             /* number of resolution allowed, skip the packet */
 472             else if (l_current_pi->resno >=
 473                      p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
 474                 skip_packet = OPJ_TRUE;
 475             } else {
 476                 /* If no precincts of any band intersects the area of interest, */
 477                 /* skip the packet */
 478                 OPJ_UINT32 bandno;
 479                 opj_tcd_tilecomp_t *tilec = &p_tile->comps[l_current_pi->compno];
 480                 opj_tcd_resolution_t *res = &tilec->resolutions[l_current_pi->resno];
 481
 482                 skip_packet = OPJ_TRUE;
 483                 for (bandno = 0; bandno < res->numbands; ++bandno) {
 484                     opj_tcd_band_t* band = &res->bands[bandno];
 485                     opj_tcd_precinct_t* prec = &band->precincts[l_current_pi->precno];
 486
 487                     if (opj_tcd_is_subband_area_of_interest(tcd,
 488                                                             l_current_pi->compno,
 489                                                             l_current_pi->resno,
 490                                                             band->bandno,
 491                                                             (OPJ_UINT32)prec->x0,
 492                                                             (OPJ_UINT32)prec->y0,
 493                                                             (OPJ_UINT32)prec->x1,
 494                                                             (OPJ_UINT32)prec->y1)) {
 495                         skip_packet = OPJ_FALSE;
 496                         break;
 497                     }
 498                 }
 499                 /*
 500                                 printf("packet cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d -> %s\n",
 501                                     l_current_pi->compno, l_current_pi->resno,
 502                                     l_current_pi->precno, l_current_pi->layno, skip_packet ? "skipped" : "kept");
 503                 */
 504             }
 505
 506             if (!skip_packet) {
 507                 l_nb_bytes_read = 0;
 508
 509                 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
 510
 511                 if (! opj_t2_decode_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
 512                                            &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
 513                     opj_pi_destroy(l_pi, l_nb_pocs);
 514                     opj_free(first_pass_failed);
 515                     return OPJ_FALSE;
 516                 }
 517
 518                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 519                 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno,
 520                                             l_img_comp->resno_decoded);
 521             } else {
 522                 l_nb_bytes_read = 0;
 523                 if (! opj_t2_skip_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
 524                                          &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
 525                     opj_pi_destroy(l_pi, l_nb_pocs);
 526                     opj_free(first_pass_failed);
 527                     return OPJ_FALSE;
 528                 }
 529             }
 530
 531             if (first_pass_failed[l_current_pi->compno]) {
 532                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 533                 if (l_img_comp->resno_decoded == 0) {
 534                     l_img_comp->resno_decoded =
 535                         p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
 536                 }
 537             }
 538
 539             l_current_data += l_nb_bytes_read;
 540             p_max_len -= l_nb_bytes_read;
 541
 542             /* INDEX >> */
 543 #ifdef TODO_MSD
 544             if (p_cstr_info) {
 545                 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
 546                 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
 547                 tp_start_packno = 0;
 548                 if (!p_cstr_info->packno) {
 549                     info_PK->start_pos = info_TL->end_header + 1;
 550                 } else if (info_TL->packet[p_cstr_info->packno - 1].end_pos >=
 551                            (OPJ_INT32)
 552                            p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_pos) { /* New tile part */
 553                     info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno -
 554                                                      tp_start_packno; /* Number of packets in previous tile-part */
 555                     tp_start_packno = p_cstr_info->packno;
 556                     curtp++;
 557                     info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header + 1;
 558                 } else {
 559                     info_PK->start_pos = (l_cp->m_specific_param.m_enc.m_tp_on &&
 560                                           info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[p_cstr_info->packno -
 561                                                                       1].end_pos + 1;
 562                 }
 563                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
 564                 info_PK->end_ph_pos += info_PK->start_pos -
 565                                        1;  /* End of packet header which now only represents the distance */
 566                 ++p_cstr_info->packno;
 567             }
 568 #endif
 569             /* << INDEX */
 570         }
 571         ++l_current_pi;
 572
 573         opj_free(first_pass_failed);
 574     }
 575     /* INDEX >> */
 576 #ifdef TODO_MSD
 577     if
 578     (p_cstr_info) {
 579         p_cstr_info->tile[p_tile_no].tp[curtp].tp_numpacks = p_cstr_info->packno -
 580                 tp_start_packno; /* Number of packets in last tile-part */
 581     }
 582 #endif
 583     /* << INDEX */
 584
 585     /* don't forget to release pi */
 586     opj_pi_destroy(l_pi, l_nb_pocs);
 587     *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
 588     return OPJ_TRUE;
 589 }
 590
 591 /* ----------------------------------------------------------------------- */
 592
 593 /**
 594  * Creates a Tier 2 handle
 595  *
 596  * @param       p_image         Source or destination image
 597  * @param       p_cp            Image coding parameters.
 598  * @return              a new T2 handle if successful, NULL otherwise.
 599 */
 600 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
 601 {
 602     /* create the t2 structure */
 603     opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1, sizeof(opj_t2_t));
 604     if (!l_t2) {
 605         return NULL;
 606     }
 607
 608     l_t2->image = p_image;
 609     l_t2->cp = p_cp;
 610
 611     return l_t2;
 612 }
 613
 614 void opj_t2_destroy(opj_t2_t *t2)
 615 {
 616     if (t2) {
 617         opj_free(t2);
 618     }
 619 }
 620
 621 static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* p_t2,
 622                                      opj_tcd_tile_t *p_tile,
 623                                      opj_tcp_t *p_tcp,
 624                                      opj_pi_iterator_t *p_pi,
 625                                      OPJ_BYTE *p_src,
 626                                      OPJ_UINT32 * p_data_read,
 627                                      OPJ_UINT32 p_max_length,
 628                                      opj_packet_info_t *p_pack_info,
 629                                      opj_event_mgr_t *p_manager)
 630 {
 631     OPJ_BOOL l_read_data;
 632     OPJ_UINT32 l_nb_bytes_read = 0;
 633     OPJ_UINT32 l_nb_total_bytes_read = 0;
 634
 635     *p_data_read = 0;
 636
 637     if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
 638                                     &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
 639         return OPJ_FALSE;
 640     }
 641
 642     p_src += l_nb_bytes_read;
 643     l_nb_total_bytes_read += l_nb_bytes_read;
 644     p_max_length -= l_nb_bytes_read;
 645
 646     /* we should read data for the packet */
 647     if (l_read_data) {
 648         l_nb_bytes_read = 0;
 649
 650         if (! opj_t2_read_packet_data(p_t2, p_tile, p_pi, p_src, &l_nb_bytes_read,
 651                                       p_max_length, p_pack_info, p_manager)) {
 652             return OPJ_FALSE;
 653         }
 654
 655         l_nb_total_bytes_read += l_nb_bytes_read;
 656     }
 657
 658     *p_data_read = l_nb_total_bytes_read;
 659
 660     return OPJ_TRUE;
 661 }
 662
 663 static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno,
 664                                      opj_tcd_tile_t * tile,
 665                                      opj_tcp_t * tcp,
 666                                      opj_pi_iterator_t *pi,
 667                                      OPJ_BYTE *dest,
 668                                      OPJ_UINT32 * p_data_written,
 669                                      OPJ_UINT32 length,
 670                                      opj_codestream_info_t *cstr_info,
 671                                      J2K_T2_MODE p_t2_mode,
 672                                      opj_event_mgr_t *p_manager)
 673 {
 674     OPJ_UINT32 bandno, cblkno;
 675     OPJ_BYTE* c = dest;
 676     OPJ_UINT32 l_nb_bytes;
 677     OPJ_UINT32 compno = pi->compno;     /* component value */
 678     OPJ_UINT32 resno  = pi->resno;      /* resolution level value */
 679     OPJ_UINT32 precno = pi->precno;     /* precinct value */
 680     OPJ_UINT32 layno  = pi->layno;      /* quality layer value */
 681     OPJ_UINT32 l_nb_blocks;
 682     opj_tcd_band_t *band = 00;
 683     opj_tcd_cblk_enc_t* cblk = 00;
 684     opj_tcd_pass_t *pass = 00;
 685
 686     opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
 687     opj_tcd_resolution_t *res = &tilec->resolutions[resno];
 688
 689     opj_bio_t *bio = 00;    /* BIO component */
 690 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
 691     OPJ_BOOL packet_empty = OPJ_TRUE;
 692 #else
 693     OPJ_BOOL packet_empty = OPJ_FALSE;
 694 #endif
 695
 696 #ifdef DEBUG_VERBOSE
 697     if (p_t2_mode == FINAL_PASS) {
 698         fprintf(stderr,
 699                 "encode packet compono=%d, resno=%d, precno=%d, layno=%d\n",
 700                 compno, resno, precno, layno);
 701     }
 702 #endif
 703
 704     /* <SOP 0xff91> */
 705     if (tcp->csty & J2K_CP_CSTY_SOP) {
 706         if (length < 6) {
 707             if (p_t2_mode == FINAL_PASS) {
 708                 opj_event_msg(p_manager, EVT_ERROR,
 709                               "opj_t2_encode_packet(): only %u bytes remaining in "
 710                               "output buffer. %u needed.\n",
 711                               length, 6);
 712             }
 713             return OPJ_FALSE;
 714         }
 715         c[0] = 255;
 716         c[1] = 145;
 717         c[2] = 0;
 718         c[3] = 4;
 719 #if 0
 720         c[4] = (tile->packno % 65536) / 256;
 721         c[5] = (tile->packno % 65536) % 256;
 722 #else
 723         c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
 724         c[5] = tile->packno & 0xff;
 725 #endif
 726         c += 6;
 727         length -= 6;
 728     }
 729     /* </SOP> */
 730
 731     if (!layno) {
 732         band = res->bands;
 733
 734         for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
 735             opj_tcd_precinct_t *prc;
 736
 737             /* Skip empty bands */
 738             if (opj_tcd_is_band_empty(band)) {
 739                 continue;
 740             }
 741
 742             /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1294 */
 743             /* but likely not a proper fix. */
 744             if (precno >= res->pw * res->ph) {
 745                 opj_event_msg(p_manager, EVT_ERROR,
 746                               "opj_t2_encode_packet(): accessing precno=%u >= %u\n",
 747                               precno, res->pw * res->ph);
 748                 return OPJ_FALSE;
 749             }
 750
 751             prc = &band->precincts[precno];
 752             opj_tgt_reset(prc->incltree);
 753             opj_tgt_reset(prc->imsbtree);
 754
 755             l_nb_blocks = prc->cw * prc->ch;
 756             for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 757                 cblk = &prc->cblks.enc[cblkno];
 758
 759                 cblk->numpasses = 0;
 760                 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
 761             }
 762         }
 763     }
 764
 765     bio = opj_bio_create();
 766     if (!bio) {
 767         /* FIXME event manager error callback */
 768         return OPJ_FALSE;
 769     }
 770     opj_bio_init_enc(bio, c, length);
 771
 772 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
 773     /* WARNING: this code branch is disabled, since it has been reported that */
 774     /* such packets cause decoding issues with cinema J2K hardware */
 775     /* decoders: https://groups.google.com/forum/#!topic/openjpeg/M7M_fLX_Bco */
 776
 777     /* Check if the packet is empty */
 778     /* Note: we could also skip that step and always write a packet header */
 779     band = res->bands;
 780     for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
 781         opj_tcd_precinct_t *prc;
 782         /* Skip empty bands */
 783         if (opj_tcd_is_band_empty(band)) {
 784             continue;
 785         }
 786
 787         prc = &band->precincts[precno];
 788         l_nb_blocks = prc->cw * prc->ch;
 789         cblk = prc->cblks.enc;
 790         for (cblkno = 0; cblkno < l_nb_blocks; cblkno++, ++cblk) {
 791             opj_tcd_layer_t *layer = &cblk->layers[layno];
 792
 793             /* if cblk not included, go to the next cblk  */
 794             if (!layer->numpasses) {
 795                 continue;
 796             }
 797             packet_empty = OPJ_FALSE;
 798             break;
 799         }
 800         if (!packet_empty) {
 801             break;
 802         }
 803     }
 804 #endif
 805     opj_bio_write(bio, packet_empty ? 0 : 1, 1);           /* Empty header bit */
 806
 807     /* Writing Packet header */
 808     band = res->bands;
 809     for (bandno = 0; !packet_empty &&
 810             bandno < res->numbands; ++bandno, ++band)      {
 811         opj_tcd_precinct_t *prc;
 812
 813         /* Skip empty bands */
 814         if (opj_tcd_is_band_empty(band)) {
 815             continue;
 816         }
 817
 818         /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1297 */
 819         /* but likely not a proper fix. */
 820         if (precno >= res->pw * res->ph) {
 821             opj_event_msg(p_manager, EVT_ERROR,
 822                           "opj_t2_encode_packet(): accessing precno=%u >= %u\n",
 823                           precno, res->pw * res->ph);
 824             return OPJ_FALSE;
 825         }
 826
 827         prc = &band->precincts[precno];
 828         l_nb_blocks = prc->cw * prc->ch;
 829         cblk = prc->cblks.enc;
 830
 831         for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 832             opj_tcd_layer_t *layer = &cblk->layers[layno];
 833
 834             if (!cblk->numpasses && layer->numpasses) {
 835                 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
 836             }
 837
 838             ++cblk;
 839         }
 840
 841         cblk = prc->cblks.enc;
 842         for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
 843             opj_tcd_layer_t *layer = &cblk->layers[layno];
 844             OPJ_UINT32 increment = 0;
 845             OPJ_UINT32 nump = 0;
 846             OPJ_UINT32 len = 0, passno;
 847             OPJ_UINT32 l_nb_passes;
 848
 849             /* cblk inclusion bits */
 850             if (!cblk->numpasses) {
 851                 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
 852             } else {
 853                 opj_bio_write(bio, layer->numpasses != 0, 1);
 854             }
 855
 856             /* if cblk not included, go to the next cblk  */
 857             if (!layer->numpasses) {
 858                 ++cblk;
 859                 continue;
 860             }
 861
 862             /* if first instance of cblk --> zero bit-planes information */
 863             if (!cblk->numpasses) {
 864                 cblk->numlenbits = 3;
 865                 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
 866             }
 867
 868             /* number of coding passes included */
 869             opj_t2_putnumpasses(bio, layer->numpasses);
 870             l_nb_passes = cblk->numpasses + layer->numpasses;
 871             pass = cblk->passes +  cblk->numpasses;
 872
 873             /* computation of the increase of the length indicator and insertion in the header     */
 874             for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 875                 ++nump;
 876                 len += pass->len;
 877
 878                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 879                     increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment,
 880                                                         opj_int_floorlog2((OPJ_INT32)len) + 1
 881                                                         - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
 882                     len = 0;
 883                     nump = 0;
 884                 }
 885
 886                 ++pass;
 887             }
 888             opj_t2_putcommacode(bio, (OPJ_INT32)increment);
 889
 890             /* computation of the new Length indicator */
 891             cblk->numlenbits += increment;
 892
 893             pass = cblk->passes +  cblk->numpasses;
 894             /* insertion of the codeword segment length */
 895             for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 896                 nump++;
 897                 len += pass->len;
 898
 899                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 900                     opj_bio_write(bio, (OPJ_UINT32)len,
 901                                   cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
 902                     len = 0;
 903                     nump = 0;
 904                 }
 905                 ++pass;
 906             }
 907
 908             ++cblk;
 909         }
 910     }
 911
 912     if (!opj_bio_flush(bio)) {
 913         opj_bio_destroy(bio);
 914         return OPJ_FALSE;               /* modified to eliminate longjmp !! */
 915     }
 916
 917     l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
 918     c += l_nb_bytes;
 919     length -= l_nb_bytes;
 920
 921     opj_bio_destroy(bio);
 922
 923     /* <EPH 0xff92> */
 924     if (tcp->csty & J2K_CP_CSTY_EPH) {
 925         if (length < 2) {
 926             if (p_t2_mode == FINAL_PASS) {
 927                 opj_event_msg(p_manager, EVT_ERROR,
 928                               "opj_t2_encode_packet(): only %u bytes remaining in "
 929                               "output buffer. %u needed.\n",
 930                               length, 2);
 931             }
 932             return OPJ_FALSE;
 933         }
 934         c[0] = 255;
 935         c[1] = 146;
 936         c += 2;
 937         length -= 2;
 938     }
 939     /* </EPH> */
 940
 941     /* << INDEX */
 942     /* End of packet header position. Currently only represents the distance to start of packet
 943        Will be updated later by incrementing with packet start value*/
 944     if (cstr_info && cstr_info->index_write) {
 945         opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 946         info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
 947     }
 948     /* INDEX >> */
 949
 950     /* Writing the packet body */
 951     band = res->bands;
 952     for (bandno = 0; !packet_empty && bandno < res->numbands; bandno++, ++band) {
 953         opj_tcd_precinct_t *prc;
 954
 955         /* Skip empty bands */
 956         if (opj_tcd_is_band_empty(band)) {
 957             continue;
 958         }
 959
 960         prc = &band->precincts[precno];
 961         l_nb_blocks = prc->cw * prc->ch;
 962         cblk = prc->cblks.enc;
 963
 964         for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 965             opj_tcd_layer_t *layer = &cblk->layers[layno];
 966
 967             if (!layer->numpasses) {
 968                 ++cblk;
 969                 continue;
 970             }
 971
 972             if (layer->len > length) {
 973                 if (p_t2_mode == FINAL_PASS) {
 974                     opj_event_msg(p_manager, EVT_ERROR,
 975                                   "opj_t2_encode_packet(): only %u bytes remaining in "
 976                                   "output buffer. %u needed.\n",
 977                                   length, layer->len);
 978                 }
 979                 return OPJ_FALSE;
 980             }
 981
 982             memcpy(c, layer->data, layer->len);
 983             cblk->numpasses += layer->numpasses;
 984             c += layer->len;
 985             length -= layer->len;
 986
 987             /* << INDEX */
 988             if (cstr_info && cstr_info->index_write) {
 989                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 990                 info_PK->disto += layer->disto;
 991                 if (cstr_info->D_max < info_PK->disto) {
 992                     cstr_info->D_max = info_PK->disto;
 993                 }
 994             }
 995
 996             ++cblk;
 997             /* INDEX >> */
 998         }
 999     }
1000
1001     assert(c >= dest);
1002     * p_data_written += (OPJ_UINT32)(c - dest);
1003
1004     return OPJ_TRUE;
1005 }
1006
1007 static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
1008                                    opj_tcd_tile_t *p_tile,
1009                                    opj_tcp_t *p_tcp,
1010                                    opj_pi_iterator_t *p_pi,
1011                                    OPJ_BYTE *p_src,
1012                                    OPJ_UINT32 * p_data_read,
1013                                    OPJ_UINT32 p_max_length,
1014                                    opj_packet_info_t *p_pack_info,
1015                                    opj_event_mgr_t *p_manager)
1016 {
1017     OPJ_BOOL l_read_data;
1018     OPJ_UINT32 l_nb_bytes_read = 0;
1019     OPJ_UINT32 l_nb_total_bytes_read = 0;
1020
1021     *p_data_read = 0;
1022
1023     if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
1024                                     &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
1025         return OPJ_FALSE;
1026     }
1027
1028     p_src += l_nb_bytes_read;
1029     l_nb_total_bytes_read += l_nb_bytes_read;
1030     p_max_length -= l_nb_bytes_read;
1031
1032     /* we should read data for the packet */
1033     if (l_read_data) {
1034         l_nb_bytes_read = 0;
1035
1036         if (! opj_t2_skip_packet_data(p_t2, p_tile, p_pi, &l_nb_bytes_read,
1037                                       p_max_length, p_pack_info, p_manager)) {
1038             return OPJ_FALSE;
1039         }
1040
1041         l_nb_total_bytes_read += l_nb_bytes_read;
1042     }
1043     *p_data_read = l_nb_total_bytes_read;
1044
1045     return OPJ_TRUE;
1046 }
1047
1048
1049 static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
1050         opj_tcd_tile_t *p_tile,
1051         opj_tcp_t *p_tcp,
1052         opj_pi_iterator_t *p_pi,
1053         OPJ_BOOL * p_is_data_present,
1054         OPJ_BYTE *p_src_data,
1055         OPJ_UINT32 * p_data_read,
1056         OPJ_UINT32 p_max_length,
1057         opj_packet_info_t *p_pack_info,
1058         opj_event_mgr_t *p_manager)
1059
1060 {
1061     /* loop */
1062     OPJ_UINT32 bandno, cblkno;
1063     OPJ_UINT32 l_nb_code_blocks;
1064     OPJ_UINT32 l_remaining_length;
1065     OPJ_UINT32 l_header_length;
1066     OPJ_UINT32 * l_modified_length_ptr = 00;
1067     OPJ_BYTE *l_current_data = p_src_data;
1068     opj_cp_t *l_cp = p_t2->cp;
1069     opj_bio_t *l_bio = 00;  /* BIO component */
1070     opj_tcd_band_t *l_band = 00;
1071     opj_tcd_cblk_dec_t* l_cblk = 00;
1072     opj_tcd_resolution_t* l_res =
1073         &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1074
1075     OPJ_BYTE *l_header_data = 00;
1076     OPJ_BYTE **l_header_data_start = 00;
1077
1078     OPJ_UINT32 l_present;
1079
1080     if (p_pi->layno == 0) {
1081         l_band = l_res->bands;
1082
1083         /* reset tagtrees */
1084         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1085             if (!opj_tcd_is_band_empty(l_band)) {
1086                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1087                 if (!(p_pi->precno < (l_band->precincts_data_size / sizeof(
1088                                           opj_tcd_precinct_t)))) {
1089                     opj_event_msg(p_manager, EVT_ERROR, "Invalid precinct\n");
1090                     return OPJ_FALSE;
1091                 }
1092
1093
1094                 opj_tgt_reset(l_prc->incltree);
1095                 opj_tgt_reset(l_prc->imsbtree);
1096                 l_cblk = l_prc->cblks.dec;
1097
1098                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1099                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1100                     l_cblk->numsegs = 0;
1101                     l_cblk->real_num_segs = 0;
1102                     ++l_cblk;
1103                 }
1104             }
1105
1106             ++l_band;
1107         }
1108     }
1109
1110     /* SOP markers */
1111
1112     if (p_tcp->csty & J2K_CP_CSTY_SOP) {
1113         if (p_max_length < 6) {
1114             opj_event_msg(p_manager, EVT_WARNING,
1115                           "Not enough space for expected SOP marker\n");
1116         } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
1117             opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n");
1118         } else {
1119             l_current_data += 6;
1120         }
1121
1122         /** TODO : check the Nsop value */
1123     }
1124
1125     /*
1126     When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
1127     This part deal with this characteristic
1128     step 1: Read packet header in the saved structure
1129     step 2: Return to codestream for decoding
1130     */
1131
1132     l_bio = opj_bio_create();
1133     if (! l_bio) {
1134         return OPJ_FALSE;
1135     }
1136
1137     if (l_cp->ppm == 1) { /* PPM */
1138         l_header_data_start = &l_cp->ppm_data;
1139         l_header_data = *l_header_data_start;
1140         l_modified_length_ptr = &(l_cp->ppm_len);
1141
1142     } else if (p_tcp->ppt == 1) { /* PPT */
1143         l_header_data_start = &(p_tcp->ppt_data);
1144         l_header_data = *l_header_data_start;
1145         l_modified_length_ptr = &(p_tcp->ppt_len);
1146     } else { /* Normal Case */
1147         l_header_data_start = &(l_current_data);
1148         l_header_data = *l_header_data_start;
1149         l_remaining_length = (OPJ_UINT32)(p_src_data + p_max_length - l_header_data);
1150         l_modified_length_ptr = &(l_remaining_length);
1151     }
1152
1153     opj_bio_init_dec(l_bio, l_header_data, *l_modified_length_ptr);
1154
1155     l_present = opj_bio_read(l_bio, 1);
1156     JAS_FPRINTF(stderr, "present=%d \n", l_present);
1157     if (!l_present) {
1158         /* TODO MSD: no test to control the output of this function*/
1159         opj_bio_inalign(l_bio);
1160         l_header_data += opj_bio_numbytes(l_bio);
1161         opj_bio_destroy(l_bio);
1162
1163         /* EPH markers */
1164         if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1165             if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1166                     *l_header_data_start)) < 2U) {
1167                 opj_event_msg(p_manager, EVT_WARNING,
1168                               "Not enough space for expected EPH marker\n");
1169             } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1170                 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1171             } else {
1172                 l_header_data += 2;
1173             }
1174         }
1175
1176         l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1177         *l_modified_length_ptr -= l_header_length;
1178         *l_header_data_start += l_header_length;
1179
1180         /* << INDEX */
1181         /* End of packet header position. Currently only represents the distance to start of packet
1182            Will be updated later by incrementing with packet start value */
1183         if (p_pack_info) {
1184             p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1185         }
1186         /* INDEX >> */
1187
1188         * p_is_data_present = OPJ_FALSE;
1189         *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1190         return OPJ_TRUE;
1191     }
1192
1193     l_band = l_res->bands;
1194     for (bandno = 0; bandno < l_res->numbands; ++bandno, ++l_band) {
1195         opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
1196
1197         if (opj_tcd_is_band_empty(l_band)) {
1198             continue;
1199         }
1200
1201         l_nb_code_blocks = l_prc->cw * l_prc->ch;
1202         l_cblk = l_prc->cblks.dec;
1203         for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
1204             OPJ_UINT32 l_included, l_increment, l_segno;
1205             OPJ_INT32 n;
1206
1207             /* if cblk not yet included before --> inclusion tagtree */
1208             if (!l_cblk->numsegs) {
1209                 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno,
1210                                             (OPJ_INT32)(p_pi->layno + 1));
1211                 /* else one bit */
1212             } else {
1213                 l_included = opj_bio_read(l_bio, 1);
1214             }
1215
1216             /* if cblk not included */
1217             if (!l_included) {
1218                 l_cblk->numnewpasses = 0;
1219                 ++l_cblk;
1220                 JAS_FPRINTF(stderr, "included=%d \n", l_included);
1221                 continue;
1222             }
1223
1224             /* if cblk not yet included --> zero-bitplane tagtree */
1225             if (!l_cblk->numsegs) {
1226                 OPJ_UINT32 i = 0;
1227
1228                 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1229                     ++i;
1230                 }
1231
1232                 l_cblk->Mb = (OPJ_UINT32)l_band->numbps;
1233                 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1234                 l_cblk->numlenbits = 3;
1235             }
1236
1237             /* number of coding passes */
1238             l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1239             l_increment = opj_t2_getcommacode(l_bio);
1240
1241             /* length indicator increment */
1242             l_cblk->numlenbits += l_increment;
1243             l_segno = 0;
1244
1245             if (!l_cblk->numsegs) {
1246                 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1247                     opj_bio_destroy(l_bio);
1248                     return OPJ_FALSE;
1249                 }
1250             } else {
1251                 l_segno = l_cblk->numsegs - 1;
1252                 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1253                     ++l_segno;
1254                     if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1255                         opj_bio_destroy(l_bio);
1256                         return OPJ_FALSE;
1257                     }
1258                 }
1259             }
1260             n = (OPJ_INT32)l_cblk->numnewpasses;
1261
1262             if ((p_tcp->tccps[p_pi->compno].cblksty & J2K_CCP_CBLKSTY_HT) != 0)
1263                 do {
1264                     OPJ_UINT32 bit_number;
1265                     l_cblk->segs[l_segno].numnewpasses = l_segno == 0 ? 1 : (OPJ_UINT32)n;
1266                     bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1267                                      l_cblk->segs[l_segno].numnewpasses);
1268                     if (bit_number > 32) {
1269                         opj_event_msg(p_manager, EVT_ERROR,
1270                                       "Invalid bit number %d in opj_t2_read_packet_header()\n",
1271                                       bit_number);
1272                         opj_bio_destroy(l_bio);
1273                         return OPJ_FALSE;
1274                     }
1275                     l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1276                     JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1277                                 l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1278                                 l_cblk->segs[l_segno].newlen);
1279
1280                     n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1281                     if (n > 0) {
1282                         ++l_segno;
1283
1284                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1285                             opj_bio_destroy(l_bio);
1286                             return OPJ_FALSE;
1287                         }
1288                     }
1289                 } while (n > 0);
1290             else
1291                 do {
1292                     OPJ_UINT32 bit_number;
1293                     l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)(
1294                             l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n);
1295                     bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1296                                      l_cblk->segs[l_segno].numnewpasses);
1297                     if (bit_number > 32) {
1298                         opj_event_msg(p_manager, EVT_ERROR,
1299                                       "Invalid bit number %d in opj_t2_read_packet_header()\n",
1300                                       bit_number);
1301                         opj_bio_destroy(l_bio);
1302                         return OPJ_FALSE;
1303                     }
1304                     l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1305                     JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1306                                 l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1307                                 l_cblk->segs[l_segno].newlen);
1308
1309                     n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1310                     if (n > 0) {
1311                         ++l_segno;
1312
1313                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1314                             opj_bio_destroy(l_bio);
1315                             return OPJ_FALSE;
1316                         }
1317                     }
1318                 } while (n > 0);
1319
1320             ++l_cblk;
1321         }
1322     }
1323
1324     if (!opj_bio_inalign(l_bio)) {
1325         opj_bio_destroy(l_bio);
1326         return OPJ_FALSE;
1327     }
1328
1329     l_header_data += opj_bio_numbytes(l_bio);
1330     opj_bio_destroy(l_bio);
1331
1332     /* EPH markers */
1333     if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1334         if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1335                 *l_header_data_start)) < 2U) {
1336             opj_event_msg(p_manager, EVT_WARNING,
1337                           "Not enough space for expected EPH marker\n");
1338         } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1339             opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1340         } else {
1341             l_header_data += 2;
1342         }
1343     }
1344
1345     l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1346     JAS_FPRINTF(stderr, "hdrlen=%d \n", l_header_length);
1347     JAS_FPRINTF(stderr, "packet body\n");
1348     *l_modified_length_ptr -= l_header_length;
1349     *l_header_data_start += l_header_length;
1350
1351     /* << INDEX */
1352     /* End of packet header position. Currently only represents the distance to start of packet
1353      Will be updated later by incrementing with packet start value */
1354     if (p_pack_info) {
1355         p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1356     }
1357     /* INDEX >> */
1358
1359     *p_is_data_present = OPJ_TRUE;
1360     *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1361
1362     return OPJ_TRUE;
1363 }
1364
1365 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
1366                                         opj_tcd_tile_t *p_tile,
1367                                         opj_pi_iterator_t *p_pi,
1368                                         OPJ_BYTE *p_src_data,
1369                                         OPJ_UINT32 * p_data_read,
1370                                         OPJ_UINT32 p_max_length,
1371                                         opj_packet_info_t *pack_info,
1372                                         opj_event_mgr_t* p_manager)
1373 {
1374     OPJ_UINT32 bandno, cblkno;
1375     OPJ_UINT32 l_nb_code_blocks;
1376     OPJ_BYTE *l_current_data = p_src_data;
1377     opj_tcd_band_t *l_band = 00;
1378     opj_tcd_cblk_dec_t* l_cblk = 00;
1379     opj_tcd_resolution_t* l_res =
1380         &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1381
1382     OPJ_ARG_NOT_USED(p_t2);
1383     OPJ_ARG_NOT_USED(pack_info);
1384
1385     l_band = l_res->bands;
1386     for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1387         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1388
1389         if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1390             ++l_band;
1391             continue;
1392         }
1393
1394         l_nb_code_blocks = l_prc->cw * l_prc->ch;
1395         l_cblk = l_prc->cblks.dec;
1396
1397         for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1398             opj_tcd_seg_t *l_seg = 00;
1399
1400             if (!l_cblk->numnewpasses) {
1401                 /* nothing to do */
1402                 ++l_cblk;
1403                 continue;
1404             }
1405
1406             if (!l_cblk->numsegs) {
1407                 l_seg = l_cblk->segs;
1408                 ++l_cblk->numsegs;
1409             } else {
1410                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1411
1412                 if (l_seg->numpasses == l_seg->maxpasses) {
1413                     ++l_seg;
1414                     ++l_cblk->numsegs;
1415                 }
1416             }
1417
1418             do {
1419                 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1420                 if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) <
1421                         (OPJ_SIZE_T)l_current_data) ||
1422                         (l_current_data + l_seg->newlen > p_src_data + p_max_length)) {
1423                     opj_event_msg(p_manager, EVT_ERROR,
1424                                   "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1425                                   l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1426                                   p_pi->compno);
1427                     return OPJ_FALSE;
1428                 }
1429
1430 #ifdef USE_JPWL
1431                 /* we need here a j2k handle to verify if making a check to
1432                 the validity of cblocks parameters is selected from user (-W) */
1433
1434                 /* let's check that we are not exceeding */
1435                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1436                     opj_event_msg(p_manager, EVT_WARNING,
1437                                   "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1438                                   l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1439                     if (!JPWL_ASSUME) {
1440                         opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1441                         return OPJ_FALSE;
1442                     }
1443                     l_seg->newlen = 8192 - l_cblk->len;
1444                     opj_event_msg(p_manager, EVT_WARNING, "      - truncating segment to %d\n",
1445                                   l_seg->newlen);
1446                     break;
1447                 };
1448
1449 #endif /* USE_JPWL */
1450
1451                 if (l_cblk->numchunks == l_cblk->numchunksalloc) {
1452                     OPJ_UINT32 l_numchunksalloc = l_cblk->numchunksalloc * 2 + 1;
1453                     opj_tcd_seg_data_chunk_t* l_chunks =
1454                         (opj_tcd_seg_data_chunk_t*)opj_realloc(l_cblk->chunks,
1455                                 l_numchunksalloc * sizeof(opj_tcd_seg_data_chunk_t));
1456                     if (l_chunks == NULL) {
1457                         opj_event_msg(p_manager, EVT_ERROR,
1458                                       "cannot allocate opj_tcd_seg_data_chunk_t* array");
1459                         return OPJ_FALSE;
1460                     }
1461                     l_cblk->chunks = l_chunks;
1462                     l_cblk->numchunksalloc = l_numchunksalloc;
1463                 }
1464
1465                 l_cblk->chunks[l_cblk->numchunks].data = l_current_data;
1466                 l_cblk->chunks[l_cblk->numchunks].len = l_seg->newlen;
1467                 l_cblk->numchunks ++;
1468
1469                 l_current_data += l_seg->newlen;
1470                 l_seg->len += l_seg->newlen;
1471                 l_seg->numpasses += l_seg->numnewpasses;
1472                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1473
1474                 l_seg->real_num_passes = l_seg->numpasses;
1475
1476                 if (l_cblk->numnewpasses > 0) {
1477                     ++l_seg;
1478                     ++l_cblk->numsegs;
1479                 }
1480             } while (l_cblk->numnewpasses > 0);
1481
1482             l_cblk->real_num_segs = l_cblk->numsegs;
1483             ++l_cblk;
1484         } /* next code_block */
1485
1486         ++l_band;
1487     }
1488
1489     *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1490
1491
1492     return OPJ_TRUE;
1493 }
1494
1495 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
1496                                         opj_tcd_tile_t *p_tile,
1497                                         opj_pi_iterator_t *p_pi,
1498                                         OPJ_UINT32 * p_data_read,
1499                                         OPJ_UINT32 p_max_length,
1500                                         opj_packet_info_t *pack_info,
1501                                         opj_event_mgr_t *p_manager)
1502 {
1503     OPJ_UINT32 bandno, cblkno;
1504     OPJ_UINT32 l_nb_code_blocks;
1505     opj_tcd_band_t *l_band = 00;
1506     opj_tcd_cblk_dec_t* l_cblk = 00;
1507     opj_tcd_resolution_t* l_res =
1508         &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1509
1510     OPJ_ARG_NOT_USED(p_t2);
1511     OPJ_ARG_NOT_USED(pack_info);
1512
1513     *p_data_read = 0;
1514     l_band = l_res->bands;
1515
1516     for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1517         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1518
1519         if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1520             ++l_band;
1521             continue;
1522         }
1523
1524         l_nb_code_blocks = l_prc->cw * l_prc->ch;
1525         l_cblk = l_prc->cblks.dec;
1526
1527         for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1528             opj_tcd_seg_t *l_seg = 00;
1529
1530             if (!l_cblk->numnewpasses) {
1531                 /* nothing to do */
1532                 ++l_cblk;
1533                 continue;
1534             }
1535
1536             if (!l_cblk->numsegs) {
1537                 l_seg = l_cblk->segs;
1538                 ++l_cblk->numsegs;
1539             } else {
1540                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1541
1542                 if (l_seg->numpasses == l_seg->maxpasses) {
1543                     ++l_seg;
1544                     ++l_cblk->numsegs;
1545                 }
1546             }
1547
1548             do {
1549                 /* Check possible overflow then size */
1550                 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) ||
1551                         ((*p_data_read + l_seg->newlen) > p_max_length)) {
1552                     opj_event_msg(p_manager, EVT_ERROR,
1553                                   "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1554                                   l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1555                                   p_pi->compno);
1556                     return OPJ_FALSE;
1557                 }
1558
1559 #ifdef USE_JPWL
1560                 /* we need here a j2k handle to verify if making a check to
1561                 the validity of cblocks parameters is selected from user (-W) */
1562
1563                 /* let's check that we are not exceeding */
1564                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1565                     opj_event_msg(p_manager, EVT_WARNING,
1566                                   "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1567                                   l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1568                     if (!JPWL_ASSUME) {
1569                         opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1570                         return -999;
1571                     }
1572                     l_seg->newlen = 8192 - l_cblk->len;
1573                     opj_event_msg(p_manager, EVT_WARNING, "      - truncating segment to %d\n",
1574                                   l_seg->newlen);
1575                     break;
1576                 };
1577
1578 #endif /* USE_JPWL */
1579                 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read,
1580                             l_seg->newlen);
1581                 *(p_data_read) += l_seg->newlen;
1582
1583                 l_seg->numpasses += l_seg->numnewpasses;
1584                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1585                 if (l_cblk->numnewpasses > 0) {
1586                     ++l_seg;
1587                     ++l_cblk->numsegs;
1588                 }
1589             } while (l_cblk->numnewpasses > 0);
1590
1591             ++l_cblk;
1592         }
1593
1594         ++l_band;
1595     }
1596
1597     return OPJ_TRUE;
1598 }
1599
1600
1601 static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
1602                                 OPJ_UINT32 index,
1603                                 OPJ_UINT32 cblksty,
1604                                 OPJ_UINT32 first)
1605 {
1606     opj_tcd_seg_t* seg = 00;
1607     OPJ_UINT32 l_nb_segs = index + 1;
1608
1609     if (l_nb_segs > cblk->m_current_max_segs) {
1610         opj_tcd_seg_t* new_segs;
1611         OPJ_UINT32 l_m_current_max_segs = cblk->m_current_max_segs +
1612                                           OPJ_J2K_DEFAULT_NB_SEGS;
1613
1614         new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs,
1615                                                 l_m_current_max_segs * sizeof(opj_tcd_seg_t));
1616         if (! new_segs) {
1617             /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1618             return OPJ_FALSE;
1619         }
1620         cblk->segs = new_segs;
1621         memset(new_segs + cblk->m_current_max_segs,
1622                0, OPJ_J2K_DEFAULT_NB_SEGS * sizeof(opj_tcd_seg_t));
1623         cblk->m_current_max_segs = l_m_current_max_segs;
1624     }
1625
1626     seg = &cblk->segs[index];
1627     opj_tcd_reinit_segment(seg);
1628
1629     if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1630         seg->maxpasses = 1;
1631     } else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1632         if (first) {
1633             seg->maxpasses = 10;
1634         } else {
1635             seg->maxpasses = (((seg - 1)->maxpasses == 1) ||
1636                               ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1637         }
1638     } else {
1639         /* See paragraph "B.10.6 Number of coding passes" of the standard.
1640          * Probably that 109 must be interpreted a (Mb-1)*3 + 1 with Mb=37,
1641          * Mb being the maximum number of bit-planes available for the
1642          * representation of coefficients in the sub-band */
1643         seg->maxpasses = 109;
1644     }
1645
1646     return OPJ_TRUE;
1647 }