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         prc = &band->precincts[precno];
 819         l_nb_blocks = prc->cw * prc->ch;
 820         cblk = prc->cblks.enc;
 821
 822         for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 823             opj_tcd_layer_t *layer = &cblk->layers[layno];
 824
 825             if (!cblk->numpasses && layer->numpasses) {
 826                 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
 827             }
 828
 829             ++cblk;
 830         }
 831
 832         cblk = prc->cblks.enc;
 833         for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
 834             opj_tcd_layer_t *layer = &cblk->layers[layno];
 835             OPJ_UINT32 increment = 0;
 836             OPJ_UINT32 nump = 0;
 837             OPJ_UINT32 len = 0, passno;
 838             OPJ_UINT32 l_nb_passes;
 839
 840             /* cblk inclusion bits */
 841             if (!cblk->numpasses) {
 842                 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
 843             } else {
 844                 opj_bio_write(bio, layer->numpasses != 0, 1);
 845             }
 846
 847             /* if cblk not included, go to the next cblk  */
 848             if (!layer->numpasses) {
 849                 ++cblk;
 850                 continue;
 851             }
 852
 853             /* if first instance of cblk --> zero bit-planes information */
 854             if (!cblk->numpasses) {
 855                 cblk->numlenbits = 3;
 856                 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
 857             }
 858
 859             /* number of coding passes included */
 860             opj_t2_putnumpasses(bio, layer->numpasses);
 861             l_nb_passes = cblk->numpasses + layer->numpasses;
 862             pass = cblk->passes +  cblk->numpasses;
 863
 864             /* computation of the increase of the length indicator and insertion in the header     */
 865             for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 866                 ++nump;
 867                 len += pass->len;
 868
 869                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 870                     increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment,
 871                                                         opj_int_floorlog2((OPJ_INT32)len) + 1
 872                                                         - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
 873                     len = 0;
 874                     nump = 0;
 875                 }
 876
 877                 ++pass;
 878             }
 879             opj_t2_putcommacode(bio, (OPJ_INT32)increment);
 880
 881             /* computation of the new Length indicator */
 882             cblk->numlenbits += increment;
 883
 884             pass = cblk->passes +  cblk->numpasses;
 885             /* insertion of the codeword segment length */
 886             for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 887                 nump++;
 888                 len += pass->len;
 889
 890                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 891                     opj_bio_write(bio, (OPJ_UINT32)len,
 892                                   cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
 893                     len = 0;
 894                     nump = 0;
 895                 }
 896                 ++pass;
 897             }
 898
 899             ++cblk;
 900         }
 901     }
 902
 903     if (!opj_bio_flush(bio)) {
 904         opj_bio_destroy(bio);
 905         return OPJ_FALSE;               /* modified to eliminate longjmp !! */
 906     }
 907
 908     l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
 909     c += l_nb_bytes;
 910     length -= l_nb_bytes;
 911
 912     opj_bio_destroy(bio);
 913
 914     /* <EPH 0xff92> */
 915     if (tcp->csty & J2K_CP_CSTY_EPH) {
 916         if (length < 2) {
 917             if (p_t2_mode == FINAL_PASS) {
 918                 opj_event_msg(p_manager, EVT_ERROR,
 919                               "opj_t2_encode_packet(): only %u bytes remaining in "
 920                               "output buffer. %u needed.\n",
 921                               length, 2);
 922             }
 923             return OPJ_FALSE;
 924         }
 925         c[0] = 255;
 926         c[1] = 146;
 927         c += 2;
 928         length -= 2;
 929     }
 930     /* </EPH> */
 931
 932     /* << INDEX */
 933     /* End of packet header position. Currently only represents the distance to start of packet
 934        Will be updated later by incrementing with packet start value*/
 935     if (cstr_info && cstr_info->index_write) {
 936         opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 937         info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
 938     }
 939     /* INDEX >> */
 940
 941     /* Writing the packet body */
 942     band = res->bands;
 943     for (bandno = 0; !packet_empty && bandno < res->numbands; bandno++, ++band) {
 944         opj_tcd_precinct_t *prc;
 945
 946         /* Skip empty bands */
 947         if (opj_tcd_is_band_empty(band)) {
 948             continue;
 949         }
 950
 951         prc = &band->precincts[precno];
 952         l_nb_blocks = prc->cw * prc->ch;
 953         cblk = prc->cblks.enc;
 954
 955         for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 956             opj_tcd_layer_t *layer = &cblk->layers[layno];
 957
 958             if (!layer->numpasses) {
 959                 ++cblk;
 960                 continue;
 961             }
 962
 963             if (layer->len > length) {
 964                 if (p_t2_mode == FINAL_PASS) {
 965                     opj_event_msg(p_manager, EVT_ERROR,
 966                                   "opj_t2_encode_packet(): only %u bytes remaining in "
 967                                   "output buffer. %u needed.\n",
 968                                   length, layer->len);
 969                 }
 970                 return OPJ_FALSE;
 971             }
 972
 973             memcpy(c, layer->data, layer->len);
 974             cblk->numpasses += layer->numpasses;
 975             c += layer->len;
 976             length -= layer->len;
 977
 978             /* << INDEX */
 979             if (cstr_info && cstr_info->index_write) {
 980                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 981                 info_PK->disto += layer->disto;
 982                 if (cstr_info->D_max < info_PK->disto) {
 983                     cstr_info->D_max = info_PK->disto;
 984                 }
 985             }
 986
 987             ++cblk;
 988             /* INDEX >> */
 989         }
 990     }
 991
 992     assert(c >= dest);
 993     * p_data_written += (OPJ_UINT32)(c - dest);
 994
 995     return OPJ_TRUE;
 996 }
 997
 998 static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
 999                                    opj_tcd_tile_t *p_tile,
1000                                    opj_tcp_t *p_tcp,
1001                                    opj_pi_iterator_t *p_pi,
1002                                    OPJ_BYTE *p_src,
1003                                    OPJ_UINT32 * p_data_read,
1004                                    OPJ_UINT32 p_max_length,
1005                                    opj_packet_info_t *p_pack_info,
1006                                    opj_event_mgr_t *p_manager)
1007 {
1008     OPJ_BOOL l_read_data;
1009     OPJ_UINT32 l_nb_bytes_read = 0;
1010     OPJ_UINT32 l_nb_total_bytes_read = 0;
1011
1012     *p_data_read = 0;
1013
1014     if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
1015                                     &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
1016         return OPJ_FALSE;
1017     }
1018
1019     p_src += l_nb_bytes_read;
1020     l_nb_total_bytes_read += l_nb_bytes_read;
1021     p_max_length -= l_nb_bytes_read;
1022
1023     /* we should read data for the packet */
1024     if (l_read_data) {
1025         l_nb_bytes_read = 0;
1026
1027         if (! opj_t2_skip_packet_data(p_t2, p_tile, p_pi, &l_nb_bytes_read,
1028                                       p_max_length, p_pack_info, p_manager)) {
1029             return OPJ_FALSE;
1030         }
1031
1032         l_nb_total_bytes_read += l_nb_bytes_read;
1033     }
1034     *p_data_read = l_nb_total_bytes_read;
1035
1036     return OPJ_TRUE;
1037 }
1038
1039
1040 static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
1041         opj_tcd_tile_t *p_tile,
1042         opj_tcp_t *p_tcp,
1043         opj_pi_iterator_t *p_pi,
1044         OPJ_BOOL * p_is_data_present,
1045         OPJ_BYTE *p_src_data,
1046         OPJ_UINT32 * p_data_read,
1047         OPJ_UINT32 p_max_length,
1048         opj_packet_info_t *p_pack_info,
1049         opj_event_mgr_t *p_manager)
1050
1051 {
1052     /* loop */
1053     OPJ_UINT32 bandno, cblkno;
1054     OPJ_UINT32 l_nb_code_blocks;
1055     OPJ_UINT32 l_remaining_length;
1056     OPJ_UINT32 l_header_length;
1057     OPJ_UINT32 * l_modified_length_ptr = 00;
1058     OPJ_BYTE *l_current_data = p_src_data;
1059     opj_cp_t *l_cp = p_t2->cp;
1060     opj_bio_t *l_bio = 00;  /* BIO component */
1061     opj_tcd_band_t *l_band = 00;
1062     opj_tcd_cblk_dec_t* l_cblk = 00;
1063     opj_tcd_resolution_t* l_res =
1064         &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1065
1066     OPJ_BYTE *l_header_data = 00;
1067     OPJ_BYTE **l_header_data_start = 00;
1068
1069     OPJ_UINT32 l_present;
1070
1071     if (p_pi->layno == 0) {
1072         l_band = l_res->bands;
1073
1074         /* reset tagtrees */
1075         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1076             if (!opj_tcd_is_band_empty(l_band)) {
1077                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1078                 if (!(p_pi->precno < (l_band->precincts_data_size / sizeof(
1079                                           opj_tcd_precinct_t)))) {
1080                     opj_event_msg(p_manager, EVT_ERROR, "Invalid precinct\n");
1081                     return OPJ_FALSE;
1082                 }
1083
1084
1085                 opj_tgt_reset(l_prc->incltree);
1086                 opj_tgt_reset(l_prc->imsbtree);
1087                 l_cblk = l_prc->cblks.dec;
1088
1089                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1090                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1091                     l_cblk->numsegs = 0;
1092                     l_cblk->real_num_segs = 0;
1093                     ++l_cblk;
1094                 }
1095             }
1096
1097             ++l_band;
1098         }
1099     }
1100
1101     /* SOP markers */
1102
1103     if (p_tcp->csty & J2K_CP_CSTY_SOP) {
1104         if (p_max_length < 6) {
1105             opj_event_msg(p_manager, EVT_WARNING,
1106                           "Not enough space for expected SOP marker\n");
1107         } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
1108             opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n");
1109         } else {
1110             l_current_data += 6;
1111         }
1112
1113         /** TODO : check the Nsop value */
1114     }
1115
1116     /*
1117     When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
1118     This part deal with this caracteristic
1119     step 1: Read packet header in the saved structure
1120     step 2: Return to codestream for decoding
1121     */
1122
1123     l_bio = opj_bio_create();
1124     if (! l_bio) {
1125         return OPJ_FALSE;
1126     }
1127
1128     if (l_cp->ppm == 1) { /* PPM */
1129         l_header_data_start = &l_cp->ppm_data;
1130         l_header_data = *l_header_data_start;
1131         l_modified_length_ptr = &(l_cp->ppm_len);
1132
1133     } else if (p_tcp->ppt == 1) { /* PPT */
1134         l_header_data_start = &(p_tcp->ppt_data);
1135         l_header_data = *l_header_data_start;
1136         l_modified_length_ptr = &(p_tcp->ppt_len);
1137     } else { /* Normal Case */
1138         l_header_data_start = &(l_current_data);
1139         l_header_data = *l_header_data_start;
1140         l_remaining_length = (OPJ_UINT32)(p_src_data + p_max_length - l_header_data);
1141         l_modified_length_ptr = &(l_remaining_length);
1142     }
1143
1144     opj_bio_init_dec(l_bio, l_header_data, *l_modified_length_ptr);
1145
1146     l_present = opj_bio_read(l_bio, 1);
1147     JAS_FPRINTF(stderr, "present=%d \n", l_present);
1148     if (!l_present) {
1149         /* TODO MSD: no test to control the output of this function*/
1150         opj_bio_inalign(l_bio);
1151         l_header_data += opj_bio_numbytes(l_bio);
1152         opj_bio_destroy(l_bio);
1153
1154         /* EPH markers */
1155         if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1156             if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1157                     *l_header_data_start)) < 2U) {
1158                 opj_event_msg(p_manager, EVT_WARNING,
1159                               "Not enough space for expected EPH marker\n");
1160             } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1161                 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1162             } else {
1163                 l_header_data += 2;
1164             }
1165         }
1166
1167         l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1168         *l_modified_length_ptr -= l_header_length;
1169         *l_header_data_start += l_header_length;
1170
1171         /* << INDEX */
1172         /* End of packet header position. Currently only represents the distance to start of packet
1173            Will be updated later by incrementing with packet start value */
1174         if (p_pack_info) {
1175             p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1176         }
1177         /* INDEX >> */
1178
1179         * p_is_data_present = OPJ_FALSE;
1180         *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1181         return OPJ_TRUE;
1182     }
1183
1184     l_band = l_res->bands;
1185     for (bandno = 0; bandno < l_res->numbands; ++bandno, ++l_band) {
1186         opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
1187
1188         if (opj_tcd_is_band_empty(l_band)) {
1189             continue;
1190         }
1191
1192         l_nb_code_blocks = l_prc->cw * l_prc->ch;
1193         l_cblk = l_prc->cblks.dec;
1194         for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
1195             OPJ_UINT32 l_included, l_increment, l_segno;
1196             OPJ_INT32 n;
1197
1198             /* if cblk not yet included before --> inclusion tagtree */
1199             if (!l_cblk->numsegs) {
1200                 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno,
1201                                             (OPJ_INT32)(p_pi->layno + 1));
1202                 /* else one bit */
1203             } else {
1204                 l_included = opj_bio_read(l_bio, 1);
1205             }
1206
1207             /* if cblk not included */
1208             if (!l_included) {
1209                 l_cblk->numnewpasses = 0;
1210                 ++l_cblk;
1211                 JAS_FPRINTF(stderr, "included=%d \n", l_included);
1212                 continue;
1213             }
1214
1215             /* if cblk not yet included --> zero-bitplane tagtree */
1216             if (!l_cblk->numsegs) {
1217                 OPJ_UINT32 i = 0;
1218
1219                 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1220                     ++i;
1221                 }
1222
1223                 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1224                 l_cblk->numlenbits = 3;
1225             }
1226
1227             /* number of coding passes */
1228             l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1229             l_increment = opj_t2_getcommacode(l_bio);
1230
1231             /* length indicator increment */
1232             l_cblk->numlenbits += l_increment;
1233             l_segno = 0;
1234
1235             if (!l_cblk->numsegs) {
1236                 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1237                     opj_bio_destroy(l_bio);
1238                     return OPJ_FALSE;
1239                 }
1240             } else {
1241                 l_segno = l_cblk->numsegs - 1;
1242                 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1243                     ++l_segno;
1244                     if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1245                         opj_bio_destroy(l_bio);
1246                         return OPJ_FALSE;
1247                     }
1248                 }
1249             }
1250             n = (OPJ_INT32)l_cblk->numnewpasses;
1251
1252             do {
1253                 OPJ_UINT32 bit_number;
1254                 l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)(
1255                         l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n);
1256                 bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1257                                  l_cblk->segs[l_segno].numnewpasses);
1258                 if (bit_number > 32) {
1259                     opj_event_msg(p_manager, EVT_ERROR,
1260                                   "Invalid bit number %d in opj_t2_read_packet_header()\n",
1261                                   bit_number);
1262                     opj_bio_destroy(l_bio);
1263                     return OPJ_FALSE;
1264                 }
1265                 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1266                 JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1267                             l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1268                             l_cblk->segs[l_segno].newlen);
1269
1270                 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1271                 if (n > 0) {
1272                     ++l_segno;
1273
1274                     if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1275                         opj_bio_destroy(l_bio);
1276                         return OPJ_FALSE;
1277                     }
1278                 }
1279             } while (n > 0);
1280
1281             ++l_cblk;
1282         }
1283     }
1284
1285     if (!opj_bio_inalign(l_bio)) {
1286         opj_bio_destroy(l_bio);
1287         return OPJ_FALSE;
1288     }
1289
1290     l_header_data += opj_bio_numbytes(l_bio);
1291     opj_bio_destroy(l_bio);
1292
1293     /* EPH markers */
1294     if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1295         if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1296                 *l_header_data_start)) < 2U) {
1297             opj_event_msg(p_manager, EVT_WARNING,
1298                           "Not enough space for expected EPH marker\n");
1299         } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1300             opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1301         } else {
1302             l_header_data += 2;
1303         }
1304     }
1305
1306     l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1307     JAS_FPRINTF(stderr, "hdrlen=%d \n", l_header_length);
1308     JAS_FPRINTF(stderr, "packet body\n");
1309     *l_modified_length_ptr -= l_header_length;
1310     *l_header_data_start += l_header_length;
1311
1312     /* << INDEX */
1313     /* End of packet header position. Currently only represents the distance to start of packet
1314      Will be updated later by incrementing with packet start value */
1315     if (p_pack_info) {
1316         p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1317     }
1318     /* INDEX >> */
1319
1320     *p_is_data_present = OPJ_TRUE;
1321     *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1322
1323     return OPJ_TRUE;
1324 }
1325
1326 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
1327                                         opj_tcd_tile_t *p_tile,
1328                                         opj_pi_iterator_t *p_pi,
1329                                         OPJ_BYTE *p_src_data,
1330                                         OPJ_UINT32 * p_data_read,
1331                                         OPJ_UINT32 p_max_length,
1332                                         opj_packet_info_t *pack_info,
1333                                         opj_event_mgr_t* p_manager)
1334 {
1335     OPJ_UINT32 bandno, cblkno;
1336     OPJ_UINT32 l_nb_code_blocks;
1337     OPJ_BYTE *l_current_data = p_src_data;
1338     opj_tcd_band_t *l_band = 00;
1339     opj_tcd_cblk_dec_t* l_cblk = 00;
1340     opj_tcd_resolution_t* l_res =
1341         &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1342
1343     OPJ_ARG_NOT_USED(p_t2);
1344     OPJ_ARG_NOT_USED(pack_info);
1345
1346     l_band = l_res->bands;
1347     for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1348         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1349
1350         if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1351             ++l_band;
1352             continue;
1353         }
1354
1355         l_nb_code_blocks = l_prc->cw * l_prc->ch;
1356         l_cblk = l_prc->cblks.dec;
1357
1358         for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1359             opj_tcd_seg_t *l_seg = 00;
1360
1361             if (!l_cblk->numnewpasses) {
1362                 /* nothing to do */
1363                 ++l_cblk;
1364                 continue;
1365             }
1366
1367             if (!l_cblk->numsegs) {
1368                 l_seg = l_cblk->segs;
1369                 ++l_cblk->numsegs;
1370             } else {
1371                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1372
1373                 if (l_seg->numpasses == l_seg->maxpasses) {
1374                     ++l_seg;
1375                     ++l_cblk->numsegs;
1376                 }
1377             }
1378
1379             do {
1380                 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1381                 if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) <
1382                         (OPJ_SIZE_T)l_current_data) ||
1383                         (l_current_data + l_seg->newlen > p_src_data + p_max_length)) {
1384                     opj_event_msg(p_manager, EVT_ERROR,
1385                                   "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1386                                   l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1387                                   p_pi->compno);
1388                     return OPJ_FALSE;
1389                 }
1390
1391 #ifdef USE_JPWL
1392                 /* we need here a j2k handle to verify if making a check to
1393                 the validity of cblocks parameters is selected from user (-W) */
1394
1395                 /* let's check that we are not exceeding */
1396                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1397                     opj_event_msg(p_manager, EVT_WARNING,
1398                                   "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1399                                   l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1400                     if (!JPWL_ASSUME) {
1401                         opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1402                         return OPJ_FALSE;
1403                     }
1404                     l_seg->newlen = 8192 - l_cblk->len;
1405                     opj_event_msg(p_manager, EVT_WARNING, "      - truncating segment to %d\n",
1406                                   l_seg->newlen);
1407                     break;
1408                 };
1409
1410 #endif /* USE_JPWL */
1411
1412                 if (l_cblk->numchunks == l_cblk->numchunksalloc) {
1413                     OPJ_UINT32 l_numchunksalloc = l_cblk->numchunksalloc * 2 + 1;
1414                     opj_tcd_seg_data_chunk_t* l_chunks =
1415                         (opj_tcd_seg_data_chunk_t*)opj_realloc(l_cblk->chunks,
1416                                 l_numchunksalloc * sizeof(opj_tcd_seg_data_chunk_t));
1417                     if (l_chunks == NULL) {
1418                         opj_event_msg(p_manager, EVT_ERROR,
1419                                       "cannot allocate opj_tcd_seg_data_chunk_t* array");
1420                         return OPJ_FALSE;
1421                     }
1422                     l_cblk->chunks = l_chunks;
1423                     l_cblk->numchunksalloc = l_numchunksalloc;
1424                 }
1425
1426                 l_cblk->chunks[l_cblk->numchunks].data = l_current_data;
1427                 l_cblk->chunks[l_cblk->numchunks].len = l_seg->newlen;
1428                 l_cblk->numchunks ++;
1429
1430                 l_current_data += l_seg->newlen;
1431                 l_seg->len += l_seg->newlen;
1432                 l_seg->numpasses += l_seg->numnewpasses;
1433                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1434
1435                 l_seg->real_num_passes = l_seg->numpasses;
1436
1437                 if (l_cblk->numnewpasses > 0) {
1438                     ++l_seg;
1439                     ++l_cblk->numsegs;
1440                 }
1441             } while (l_cblk->numnewpasses > 0);
1442
1443             l_cblk->real_num_segs = l_cblk->numsegs;
1444             ++l_cblk;
1445         } /* next code_block */
1446
1447         ++l_band;
1448     }
1449
1450     *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1451
1452
1453     return OPJ_TRUE;
1454 }
1455
1456 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
1457                                         opj_tcd_tile_t *p_tile,
1458                                         opj_pi_iterator_t *p_pi,
1459                                         OPJ_UINT32 * p_data_read,
1460                                         OPJ_UINT32 p_max_length,
1461                                         opj_packet_info_t *pack_info,
1462                                         opj_event_mgr_t *p_manager)
1463 {
1464     OPJ_UINT32 bandno, cblkno;
1465     OPJ_UINT32 l_nb_code_blocks;
1466     opj_tcd_band_t *l_band = 00;
1467     opj_tcd_cblk_dec_t* l_cblk = 00;
1468     opj_tcd_resolution_t* l_res =
1469         &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1470
1471     OPJ_ARG_NOT_USED(p_t2);
1472     OPJ_ARG_NOT_USED(pack_info);
1473
1474     *p_data_read = 0;
1475     l_band = l_res->bands;
1476
1477     for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1478         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1479
1480         if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1481             ++l_band;
1482             continue;
1483         }
1484
1485         l_nb_code_blocks = l_prc->cw * l_prc->ch;
1486         l_cblk = l_prc->cblks.dec;
1487
1488         for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1489             opj_tcd_seg_t *l_seg = 00;
1490
1491             if (!l_cblk->numnewpasses) {
1492                 /* nothing to do */
1493                 ++l_cblk;
1494                 continue;
1495             }
1496
1497             if (!l_cblk->numsegs) {
1498                 l_seg = l_cblk->segs;
1499                 ++l_cblk->numsegs;
1500             } else {
1501                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1502
1503                 if (l_seg->numpasses == l_seg->maxpasses) {
1504                     ++l_seg;
1505                     ++l_cblk->numsegs;
1506                 }
1507             }
1508
1509             do {
1510                 /* Check possible overflow then size */
1511                 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) ||
1512                         ((*p_data_read + l_seg->newlen) > p_max_length)) {
1513                     opj_event_msg(p_manager, EVT_ERROR,
1514                                   "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1515                                   l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1516                                   p_pi->compno);
1517                     return OPJ_FALSE;
1518                 }
1519
1520 #ifdef USE_JPWL
1521                 /* we need here a j2k handle to verify if making a check to
1522                 the validity of cblocks parameters is selected from user (-W) */
1523
1524                 /* let's check that we are not exceeding */
1525                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1526                     opj_event_msg(p_manager, EVT_WARNING,
1527                                   "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1528                                   l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1529                     if (!JPWL_ASSUME) {
1530                         opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1531                         return -999;
1532                     }
1533                     l_seg->newlen = 8192 - l_cblk->len;
1534                     opj_event_msg(p_manager, EVT_WARNING, "      - truncating segment to %d\n",
1535                                   l_seg->newlen);
1536                     break;
1537                 };
1538
1539 #endif /* USE_JPWL */
1540                 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read,
1541                             l_seg->newlen);
1542                 *(p_data_read) += l_seg->newlen;
1543
1544                 l_seg->numpasses += l_seg->numnewpasses;
1545                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1546                 if (l_cblk->numnewpasses > 0) {
1547                     ++l_seg;
1548                     ++l_cblk->numsegs;
1549                 }
1550             } while (l_cblk->numnewpasses > 0);
1551
1552             ++l_cblk;
1553         }
1554
1555         ++l_band;
1556     }
1557
1558     return OPJ_TRUE;
1559 }
1560
1561
1562 static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
1563                                 OPJ_UINT32 index,
1564                                 OPJ_UINT32 cblksty,
1565                                 OPJ_UINT32 first)
1566 {
1567     opj_tcd_seg_t* seg = 00;
1568     OPJ_UINT32 l_nb_segs = index + 1;
1569
1570     if (l_nb_segs > cblk->m_current_max_segs) {
1571         opj_tcd_seg_t* new_segs;
1572         OPJ_UINT32 l_m_current_max_segs = cblk->m_current_max_segs +
1573                                           OPJ_J2K_DEFAULT_NB_SEGS;
1574
1575         new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs,
1576                                                 l_m_current_max_segs * sizeof(opj_tcd_seg_t));
1577         if (! new_segs) {
1578             /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1579             return OPJ_FALSE;
1580         }
1581         cblk->segs = new_segs;
1582         memset(new_segs + cblk->m_current_max_segs,
1583                0, OPJ_J2K_DEFAULT_NB_SEGS * sizeof(opj_tcd_seg_t));
1584         cblk->m_current_max_segs = l_m_current_max_segs;
1585     }
1586
1587     seg = &cblk->segs[index];
1588     opj_tcd_reinit_segment(seg);
1589
1590     if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1591         seg->maxpasses = 1;
1592     } else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1593         if (first) {
1594             seg->maxpasses = 10;
1595         } else {
1596             seg->maxpasses = (((seg - 1)->maxpasses == 1) ||
1597                               ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1598         }
1599     } else {
1600         /* See paragraph "B.10.6 Number of coding passes" of the standard.
1601          * Probably that 109 must be interpreted a (Mb-1)*3 + 1 with Mb=37,
1602          * Mb being the maximum number of bit-planes available for the
1603          * representation of coefficients in the sub-band */
1604         seg->maxpasses = 109;
1605     }
1606
1607     return OPJ_TRUE;
1608 }