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