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
 102 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
 103                                     opj_tcd_tile_t *p_tile,
 104                                     opj_tcp_t *p_tcp,
 105                                     opj_pi_iterator_t *p_pi,
 106                                     OPJ_BYTE *p_src,
 107                                     OPJ_UINT32 * p_data_read,
 108                                     OPJ_UINT32 p_max_length,
 109                                     opj_packet_info_t *p_pack_info);
 110
 111 static OPJ_BOOL opj_t2_read_packet_header(  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_BOOL * p_is_data_present,
 116                                             OPJ_BYTE *p_src_data,
 117                                             OPJ_UINT32 * p_data_read,
 118                                             OPJ_UINT32 p_max_length,
 119                                             opj_packet_info_t *p_pack_info);
 120
 121 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
 122                                         opj_tcd_tile_t *p_tile,
 123                                         opj_pi_iterator_t *p_pi,
 124                                         OPJ_BYTE *p_src_data,
 125                                         OPJ_UINT32 * p_data_read,
 126                                         OPJ_UINT32 p_max_length,
 127                                         opj_packet_info_t *pack_info);
 128
 129 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
 130                                         opj_tcd_tile_t *p_tile,
 131                                         opj_pi_iterator_t *p_pi,
 132                                         OPJ_UINT32 * p_data_read,
 133                                         OPJ_UINT32 p_max_length,
 134                                         opj_packet_info_t *pack_info);
 135
 136 /**
 137 @param cblk
 138 @param index
 139 @param cblksty
 140 @param first
 141 */
 142 static OPJ_BOOL opj_t2_init_seg(    opj_tcd_cblk_dec_t* cblk,
 143                                     OPJ_UINT32 index,
 144                                     OPJ_UINT32 cblksty,
 145                                     OPJ_UINT32 first);
 146
 147 /*@}*/
 148
 149 /*@}*/
 150
 151 /* ----------------------------------------------------------------------- */
 152
 153 /* #define RESTART 0x04 */
 154 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n) {
 155         while (--n >= 0) {
 156                 opj_bio_write(bio, 1, 1);
 157         }
 158         opj_bio_write(bio, 0, 1);
 159 }
 160
 161 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio)
 162 {
 163     OPJ_UINT32 n = 0;
 164     while (opj_bio_read(bio, 1)) {
 165             ++n;
 166     }
 167     return n;
 168 }
 169
 170 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n) {
 171         if (n == 1) {
 172                 opj_bio_write(bio, 0, 1);
 173         } else if (n == 2) {
 174                 opj_bio_write(bio, 2, 2);
 175         } else if (n <= 5) {
 176                 opj_bio_write(bio, 0xc | (n - 3), 4);
 177         } else if (n <= 36) {
 178                 opj_bio_write(bio, 0x1e0 | (n - 6), 9);
 179         } else if (n <= 164) {
 180                 opj_bio_write(bio, 0xff80 | (n - 37), 16);
 181         }
 182 }
 183
 184 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio) {
 185         OPJ_UINT32 n;
 186         if (!opj_bio_read(bio, 1))
 187                 return 1;
 188         if (!opj_bio_read(bio, 1))
 189                 return 2;
 190         if ((n = opj_bio_read(bio, 2)) != 3)
 191                 return (3 + n);
 192         if ((n = opj_bio_read(bio, 5)) != 31)
 193                 return (6 + n);
 194         return (37 + opj_bio_read(bio, 7));
 195 }
 196
 197 /* ----------------------------------------------------------------------- */
 198
 199 OPJ_BOOL opj_t2_encode_packets( opj_t2_t* p_t2,
 200                                 OPJ_UINT32 p_tile_no,
 201                                 opj_tcd_tile_t *p_tile,
 202                                 OPJ_UINT32 p_maxlayers,
 203                                 OPJ_BYTE *p_dest,
 204                                 OPJ_UINT32 * p_data_written,
 205                                 OPJ_UINT32 p_max_len,
 206                                 opj_codestream_info_t *cstr_info,
 207                                 OPJ_UINT32 p_tp_num,
 208                                 OPJ_INT32 p_tp_pos,
 209                                 OPJ_UINT32 p_pino,
 210                                 J2K_T2_MODE p_t2_mode)
 211 {
 212         OPJ_BYTE *l_current_data = p_dest;
 213         OPJ_UINT32 l_nb_bytes = 0;
 214         OPJ_UINT32 compno;
 215         OPJ_UINT32 poc;
 216         opj_pi_iterator_t *l_pi = 00;
 217         opj_pi_iterator_t *l_current_pi = 00;
 218         opj_image_t *l_image = p_t2->image;
 219         opj_cp_t *l_cp = p_t2->cp;
 220         opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
 221         OPJ_UINT32 pocno = (l_cp->rsiz == OPJ_PROFILE_CINEMA_4K)? 2: 1;
 222         OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ? l_image->numcomps : 1;
 223         OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
 224
 225         l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode);
 226         if (!l_pi) {
 227                 return OPJ_FALSE;
 228         }
 229
 230         * p_data_written = 0;
 231
 232         if (p_t2_mode == THRESH_CALC ){ /* Calculating threshold */
 233                 l_current_pi = l_pi;
 234
 235                 for     (compno = 0; compno < l_max_comp; ++compno) {
 236                         OPJ_UINT32 l_comp_len = 0;
 237                         l_current_pi = l_pi;
 238
 239                         for (poc = 0; poc < pocno ; ++poc) {
 240                                 OPJ_UINT32 l_tp_num = compno;
 241
 242                                 /* TODO MSD : check why this function cannot fail (cf. v1) */
 243                                 opj_pi_create_encode(l_pi, l_cp,p_tile_no,poc,l_tp_num,p_tp_pos,p_t2_mode);
 244
 245                                 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
 246                                     /* TODO ADE : add an error */
 247                                     opj_pi_destroy(l_pi, l_nb_pocs);
 248                                     return OPJ_FALSE;
 249                                 }
 250                                 while (opj_pi_next(l_current_pi)) {
 251                                         if (l_current_pi->layno < p_maxlayers) {
 252                                                 l_nb_bytes = 0;
 253
 254                                                 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)) {
 255                                                         opj_pi_destroy(l_pi, l_nb_pocs);
 256                                                         return OPJ_FALSE;
 257                                                 }
 258
 259                                                 l_comp_len += l_nb_bytes;
 260                                                 l_current_data += l_nb_bytes;
 261                                                 p_max_len -= l_nb_bytes;
 262
 263                                                 * p_data_written += l_nb_bytes;
 264                                         }
 265                                 }
 266
 267                                 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
 268                                         if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
 269                                                 opj_pi_destroy(l_pi, l_nb_pocs);
 270                                                 return OPJ_FALSE;
 271                                         }
 272                                 }
 273
 274                                 ++l_current_pi;
 275                         }
 276                 }
 277         }
 278         else {  /* t2_mode == FINAL_PASS  */
 279                 opj_pi_create_encode(l_pi, l_cp,p_tile_no,p_pino,p_tp_num,p_tp_pos,p_t2_mode);
 280
 281                 l_current_pi = &l_pi[p_pino];
 282                 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
 283                     /* TODO ADE : add an error */
 284                     opj_pi_destroy(l_pi, l_nb_pocs);
 285                     return OPJ_FALSE;
 286                 }
 287                 while (opj_pi_next(l_current_pi)) {
 288                         if (l_current_pi->layno < p_maxlayers) {
 289                                 l_nb_bytes=0;
 290
 291                                 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)) {
 292                                         opj_pi_destroy(l_pi, l_nb_pocs);
 293                                         return OPJ_FALSE;
 294                                 }
 295
 296                                 l_current_data += l_nb_bytes;
 297                                 p_max_len -= l_nb_bytes;
 298
 299                                 * p_data_written += l_nb_bytes;
 300
 301                                 /* INDEX >> */
 302                                 if(cstr_info) {
 303                                         if(cstr_info->index_write) {
 304                                                 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
 305                                                 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
 306                                                 if (!cstr_info->packno) {
 307                                                         info_PK->start_pos = info_TL->end_header + 1;
 308                                                 } else {
 309                                                         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;
 310                                                 }
 311                                                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
 312                                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance
 313                                                                                                                                                                                                                                                    to start of packet is incremented by value of start of packet*/
 314                                         }
 315
 316                                         cstr_info->packno++;
 317                                 }
 318                                 /* << INDEX */
 319                                 ++p_tile->packno;
 320                         }
 321                 }
 322         }
 323
 324         opj_pi_destroy(l_pi, l_nb_pocs);
 325
 326         return OPJ_TRUE;
 327 }
 328
 329 /* see issue 80 */
 330 #if 0
 331 #define JAS_FPRINTF fprintf
 332 #else
 333 /* issue 290 */
 334 static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
 335 {
 336   (void)file;
 337   (void)format;
 338 }
 339 #define JAS_FPRINTF opj_null_jas_fprintf
 340 #endif
 341
 342 OPJ_BOOL opj_t2_decode_packets( opj_t2_t *p_t2,
 343                                 OPJ_UINT32 p_tile_no,
 344                                 opj_tcd_tile_t *p_tile,
 345                                 OPJ_BYTE *p_src,
 346                                 OPJ_UINT32 * p_data_read,
 347                                 OPJ_UINT32 p_max_len,
 348                                 opj_codestream_index_t *p_cstr_index)
 349 {
 350         OPJ_BYTE *l_current_data = p_src;
 351         opj_pi_iterator_t *l_pi = 00;
 352         OPJ_UINT32 pino;
 353         opj_image_t *l_image = p_t2->image;
 354         opj_cp_t *l_cp = p_t2->cp;
 355         opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
 356         OPJ_UINT32 l_nb_bytes_read;
 357         OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
 358         opj_pi_iterator_t *l_current_pi = 00;
 359 #ifdef TODO_MSD
 360         OPJ_UINT32 curtp = 0;
 361         OPJ_UINT32 tp_start_packno;
 362 #endif
 363         opj_packet_info_t *l_pack_info = 00;
 364         opj_image_comp_t* l_img_comp = 00;
 365
 366         OPJ_ARG_NOT_USED(p_cstr_index);
 367
 368 #ifdef TODO_MSD
 369         if (p_cstr_index) {
 370                 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
 371         }
 372 #endif
 373
 374         /* create a packet iterator */
 375         l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no);
 376         if (!l_pi) {
 377                 return OPJ_FALSE;
 378         }
 379
 380
 381         l_current_pi = l_pi;
 382
 383         for     (pino = 0; pino <= l_tcp->numpocs; ++pino) {
 384
 385                 /* if the resolution needed is too low, one dim of the tilec could be equal to zero
 386                  * and no packets are used to decode this resolution and
 387                  * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
 388                  * and no l_img_comp->resno_decoded are computed
 389                  */
 390                 OPJ_BOOL* first_pass_failed = NULL;
 391
 392                 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
 393                     /* TODO ADE : add an error */
 394                     opj_pi_destroy(l_pi, l_nb_pocs);
 395                     return OPJ_FALSE;
 396                 }
 397
 398                 first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
 399                 if (!first_pass_failed)
 400                 {
 401                     opj_pi_destroy(l_pi,l_nb_pocs);
 402                     return OPJ_FALSE;
 403                 }
 404                 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
 405
 406                 while (opj_pi_next(l_current_pi)) {
 407                   JAS_FPRINTF( stderr, "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
 408                     l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno );
 409
 410                         if (l_tcp->num_layers_to_decode > l_current_pi->layno
 411                                         && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
 412                                 l_nb_bytes_read = 0;
 413
 414                                 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
 415
 416                                 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)) {
 417                                         opj_pi_destroy(l_pi,l_nb_pocs);
 418                                         opj_free(first_pass_failed);
 419                                         return OPJ_FALSE;
 420                                 }
 421
 422                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 423                                 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
 424                         }
 425                         else {
 426                                 l_nb_bytes_read = 0;
 427                                 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)) {
 428                                         opj_pi_destroy(l_pi,l_nb_pocs);
 429                                         opj_free(first_pass_failed);
 430                                         return OPJ_FALSE;
 431                                 }
 432                         }
 433
 434                         if (first_pass_failed[l_current_pi->compno]) {
 435                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 436                                 if (l_img_comp->resno_decoded == 0)
 437                                         l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
 438                         }
 439
 440                         l_current_data += l_nb_bytes_read;
 441                         p_max_len -= l_nb_bytes_read;
 442
 443                         /* INDEX >> */
 444 #ifdef TODO_MSD
 445                         if(p_cstr_info) {
 446                                 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
 447                                 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
 448                                 tp_start_packno = 0;
 449                                 if (!p_cstr_info->packno) {
 450                                         info_PK->start_pos = info_TL->end_header + 1;
 451                                 } 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 */
 452                                         info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */
 453                                         tp_start_packno = p_cstr_info->packno;
 454                                         curtp++;
 455                                         info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header+1;
 456                                 } else {
 457                                         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;
 458                                 }
 459                                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
 460                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance */
 461                                 ++p_cstr_info->packno;
 462                         }
 463 #endif
 464                         /* << INDEX */
 465                 }
 466                 ++l_current_pi;
 467
 468                 opj_free(first_pass_failed);
 469         }
 470         /* INDEX >> */
 471 #ifdef TODO_MSD
 472         if
 473                 (p_cstr_info) {
 474                 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 */
 475         }
 476 #endif
 477         /* << INDEX */
 478
 479         /* don't forget to release pi */
 480         opj_pi_destroy(l_pi,l_nb_pocs);
 481         *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
 482         return OPJ_TRUE;
 483 }
 484
 485 /* ----------------------------------------------------------------------- */
 486
 487 /**
 488  * Creates a Tier 2 handle
 489  *
 490  * @param       p_image         Source or destination image
 491  * @param       p_cp            Image coding parameters.
 492  * @return              a new T2 handle if successful, NULL otherwise.
 493 */
 494 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
 495 {
 496         /* create the t2 structure */
 497         opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1,sizeof(opj_t2_t));
 498         if (!l_t2) {
 499                 return NULL;
 500         }
 501
 502         l_t2->image = p_image;
 503         l_t2->cp = p_cp;
 504
 505         return l_t2;
 506 }
 507
 508 void opj_t2_destroy(opj_t2_t *t2) {
 509         if(t2) {
 510                 opj_free(t2);
 511         }
 512 }
 513
 514 static OPJ_BOOL opj_t2_decode_packet(  opj_t2_t* p_t2,
 515                                 opj_tcd_tile_t *p_tile,
 516                                 opj_tcp_t *p_tcp,
 517                                 opj_pi_iterator_t *p_pi,
 518                                 OPJ_BYTE *p_src,
 519                                 OPJ_UINT32 * p_data_read,
 520                                 OPJ_UINT32 p_max_length,
 521                                 opj_packet_info_t *p_pack_info)
 522 {
 523         OPJ_BOOL l_read_data;
 524         OPJ_UINT32 l_nb_bytes_read = 0;
 525         OPJ_UINT32 l_nb_total_bytes_read = 0;
 526
 527         *p_data_read = 0;
 528
 529         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)) {
 530                 return OPJ_FALSE;
 531         }
 532
 533         p_src += l_nb_bytes_read;
 534         l_nb_total_bytes_read += l_nb_bytes_read;
 535         p_max_length -= l_nb_bytes_read;
 536
 537         /* we should read data for the packet */
 538         if (l_read_data) {
 539                 l_nb_bytes_read = 0;
 540
 541                 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info)) {
 542                         return OPJ_FALSE;
 543                 }
 544
 545                 l_nb_total_bytes_read += l_nb_bytes_read;
 546         }
 547
 548         *p_data_read = l_nb_total_bytes_read;
 549
 550         return OPJ_TRUE;
 551 }
 552
 553 static OPJ_BOOL opj_t2_encode_packet(  OPJ_UINT32 tileno,
 554                                 opj_tcd_tile_t * tile,
 555                                 opj_tcp_t * tcp,
 556                                 opj_pi_iterator_t *pi,
 557                                 OPJ_BYTE *dest,
 558                                 OPJ_UINT32 * p_data_written,
 559                                 OPJ_UINT32 length,
 560                                 opj_codestream_info_t *cstr_info)
 561 {
 562         OPJ_UINT32 bandno, cblkno;
 563         OPJ_BYTE* c = dest;
 564         OPJ_UINT32 l_nb_bytes;
 565         OPJ_UINT32 compno = pi->compno;     /* component value */
 566         OPJ_UINT32 resno  = pi->resno;      /* resolution level value */
 567         OPJ_UINT32 precno = pi->precno;     /* precinct value */
 568         OPJ_UINT32 layno  = pi->layno;      /* quality layer value */
 569         OPJ_UINT32 l_nb_blocks;
 570         opj_tcd_band_t *band = 00;
 571         opj_tcd_cblk_enc_t* cblk = 00;
 572         opj_tcd_pass_t *pass = 00;
 573
 574         opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
 575         opj_tcd_resolution_t *res = &tilec->resolutions[resno];
 576
 577         opj_bio_t *bio = 00;    /* BIO component */
 578
 579         /* <SOP 0xff91> */
 580         if (tcp->csty & J2K_CP_CSTY_SOP) {
 581                 c[0] = 255;
 582                 c[1] = 145;
 583                 c[2] = 0;
 584                 c[3] = 4;
 585 #if 0
 586                 c[4] = (tile->packno % 65536) / 256;
 587                 c[5] = (tile->packno % 65536) % 256;
 588 #else
 589                 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
 590                 c[5] = tile->packno & 0xff;
 591 #endif
 592                 c += 6;
 593                 length -= 6;
 594         }
 595         /* </SOP> */
 596
 597         if (!layno) {
 598                 band = res->bands;
 599
 600                 for(bandno = 0; bandno < res->numbands; ++bandno) {
 601                         opj_tcd_precinct_t *prc = &band->precincts[precno];
 602
 603                         opj_tgt_reset(prc->incltree);
 604                         opj_tgt_reset(prc->imsbtree);
 605
 606                         l_nb_blocks = prc->cw * prc->ch;
 607                         for     (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 608                                 cblk = &prc->cblks.enc[cblkno];
 609
 610                                 cblk->numpasses = 0;
 611                                 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
 612                         }
 613                         ++band;
 614                 }
 615         }
 616
 617         bio = opj_bio_create();
 618         if (!bio) {
 619                 /* FIXME event manager error callback */
 620                 return OPJ_FALSE;
 621         }
 622         opj_bio_init_enc(bio, c, length);
 623         opj_bio_write(bio, 1, 1);           /* Empty header bit */
 624
 625         /* Writing Packet header */
 626         band = res->bands;
 627         for (bandno = 0; bandno < res->numbands; ++bandno)      {
 628                 opj_tcd_precinct_t *prc = &band->precincts[precno];
 629
 630                 l_nb_blocks = prc->cw * prc->ch;
 631                 cblk = prc->cblks.enc;
 632
 633                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 634                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 635
 636                         if (!cblk->numpasses && layer->numpasses) {
 637                                 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
 638                         }
 639
 640                         ++cblk;
 641                 }
 642
 643                 cblk = prc->cblks.enc;
 644                 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
 645                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 646                         OPJ_UINT32 increment = 0;
 647                         OPJ_UINT32 nump = 0;
 648                         OPJ_UINT32 len = 0, passno;
 649                         OPJ_UINT32 l_nb_passes;
 650
 651                         /* cblk inclusion bits */
 652                         if (!cblk->numpasses) {
 653                                 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
 654                         } else {
 655                                 opj_bio_write(bio, layer->numpasses != 0, 1);
 656                         }
 657
 658                         /* if cblk not included, go to the next cblk  */
 659                         if (!layer->numpasses) {
 660                                 ++cblk;
 661                                 continue;
 662                         }
 663
 664                         /* if first instance of cblk --> zero bit-planes information */
 665                         if (!cblk->numpasses) {
 666                                 cblk->numlenbits = 3;
 667                                 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
 668                         }
 669
 670                         /* number of coding passes included */
 671                         opj_t2_putnumpasses(bio, layer->numpasses);
 672                         l_nb_passes = cblk->numpasses + layer->numpasses;
 673                         pass = cblk->passes +  cblk->numpasses;
 674
 675                         /* computation of the increase of the length indicator and insertion in the header     */
 676                         for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 677                                 ++nump;
 678                                 len += pass->len;
 679
 680                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 681                                   increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment, opj_int_floorlog2((OPJ_INT32)len) + 1
 682                                     - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
 683                                         len = 0;
 684                                         nump = 0;
 685                                 }
 686
 687                                 ++pass;
 688                         }
 689                         opj_t2_putcommacode(bio, (OPJ_INT32)increment);
 690
 691                         /* computation of the new Length indicator */
 692                         cblk->numlenbits += increment;
 693
 694                         pass = cblk->passes +  cblk->numpasses;
 695                         /* insertion of the codeword segment length */
 696                         for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 697                                 nump++;
 698                                 len += pass->len;
 699
 700                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 701                                         opj_bio_write(bio, (OPJ_UINT32)len, cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
 702                                         len = 0;
 703                                         nump = 0;
 704                                 }
 705                                 ++pass;
 706                         }
 707
 708                         ++cblk;
 709                 }
 710
 711                 ++band;
 712         }
 713
 714         if (!opj_bio_flush(bio)) {
 715                 opj_bio_destroy(bio);
 716                 return OPJ_FALSE;               /* modified to eliminate longjmp !! */
 717         }
 718
 719         l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
 720         c += l_nb_bytes;
 721         length -= l_nb_bytes;
 722
 723         opj_bio_destroy(bio);
 724
 725         /* <EPH 0xff92> */
 726         if (tcp->csty & J2K_CP_CSTY_EPH) {
 727                 c[0] = 255;
 728                 c[1] = 146;
 729                 c += 2;
 730                 length -= 2;
 731         }
 732         /* </EPH> */
 733
 734         /* << INDEX */
 735         /* End of packet header position. Currently only represents the distance to start of packet
 736            Will be updated later by incrementing with packet start value*/
 737         if(cstr_info && cstr_info->index_write) {
 738                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 739                 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
 740         }
 741         /* INDEX >> */
 742
 743         /* Writing the packet body */
 744         band = res->bands;
 745         for (bandno = 0; bandno < res->numbands; bandno++) {
 746                 opj_tcd_precinct_t *prc = &band->precincts[precno];
 747
 748                 l_nb_blocks = prc->cw * prc->ch;
 749                 cblk = prc->cblks.enc;
 750
 751                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 752                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 753
 754                         if (!layer->numpasses) {
 755                                 ++cblk;
 756                                 continue;
 757                         }
 758
 759                         if (layer->len > length) {
 760                                 return OPJ_FALSE;
 761                         }
 762
 763                         memcpy(c, layer->data, layer->len);
 764                         cblk->numpasses += layer->numpasses;
 765                         c += layer->len;
 766                         length -= layer->len;
 767
 768                         /* << INDEX */
 769                         if(cstr_info && cstr_info->index_write) {
 770                                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 771                                 info_PK->disto += layer->disto;
 772                                 if (cstr_info->D_max < info_PK->disto) {
 773                                         cstr_info->D_max = info_PK->disto;
 774                                 }
 775                         }
 776
 777                         ++cblk;
 778                         /* INDEX >> */
 779                 }
 780                 ++band;
 781         }
 782
 783         assert( c >= dest );
 784         * p_data_written += (OPJ_UINT32)(c - dest);
 785
 786         return OPJ_TRUE;
 787 }
 788
 789 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
 790                                     opj_tcd_tile_t *p_tile,
 791                                     opj_tcp_t *p_tcp,
 792                                     opj_pi_iterator_t *p_pi,
 793                                     OPJ_BYTE *p_src,
 794                                     OPJ_UINT32 * p_data_read,
 795                                     OPJ_UINT32 p_max_length,
 796                                     opj_packet_info_t *p_pack_info)
 797 {
 798         OPJ_BOOL l_read_data;
 799         OPJ_UINT32 l_nb_bytes_read = 0;
 800         OPJ_UINT32 l_nb_total_bytes_read = 0;
 801
 802         *p_data_read = 0;
 803
 804         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)) {
 805                 return OPJ_FALSE;
 806         }
 807
 808         p_src += l_nb_bytes_read;
 809         l_nb_total_bytes_read += l_nb_bytes_read;
 810         p_max_length -= l_nb_bytes_read;
 811
 812         /* we should read data for the packet */
 813         if (l_read_data) {
 814                 l_nb_bytes_read = 0;
 815
 816                 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info)) {
 817                         return OPJ_FALSE;
 818                 }
 819
 820                 l_nb_total_bytes_read += l_nb_bytes_read;
 821         }
 822         *p_data_read = l_nb_total_bytes_read;
 823
 824         return OPJ_TRUE;
 825 }
 826
 827
 828 static OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
 829                                     opj_tcd_tile_t *p_tile,
 830                                     opj_tcp_t *p_tcp,
 831                                     opj_pi_iterator_t *p_pi,
 832                                     OPJ_BOOL * p_is_data_present,
 833                                     OPJ_BYTE *p_src_data,
 834                                     OPJ_UINT32 * p_data_read,
 835                                     OPJ_UINT32 p_max_length,
 836                                     opj_packet_info_t *p_pack_info)
 837
 838 {
 839         /* loop */
 840         OPJ_UINT32 bandno, cblkno;
 841         OPJ_UINT32 l_nb_code_blocks;
 842         OPJ_UINT32 l_remaining_length;
 843         OPJ_UINT32 l_header_length;
 844         OPJ_UINT32 * l_modified_length_ptr = 00;
 845         OPJ_BYTE *l_current_data = p_src_data;
 846         opj_cp_t *l_cp = p_t2->cp;
 847         opj_bio_t *l_bio = 00;  /* BIO component */
 848         opj_tcd_band_t *l_band = 00;
 849         opj_tcd_cblk_dec_t* l_cblk = 00;
 850         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
 851
 852         OPJ_BYTE *l_header_data = 00;
 853         OPJ_BYTE **l_header_data_start = 00;
 854
 855         OPJ_UINT32 l_present;
 856
 857         if (p_pi->layno == 0) {
 858                 l_band = l_res->bands;
 859
 860                 /* reset tagtrees */
 861                 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
 862                         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
 863
 864                         if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
 865                                 opj_tgt_reset(l_prc->incltree);
 866                                 opj_tgt_reset(l_prc->imsbtree);
 867                                 l_cblk = l_prc->cblks.dec;
 868
 869                                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
 870                                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
 871                                         l_cblk->numsegs = 0;
 872                                         l_cblk->real_num_segs = 0;
 873                                         ++l_cblk;
 874                                 }
 875                         }
 876
 877                         ++l_band;
 878                 }
 879         }
 880
 881         /* SOP markers */
 882
 883         if (p_tcp->csty & J2K_CP_CSTY_SOP) {
 884                 if (p_max_length < 6) {
 885                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Not enough space for expected SOP marker\n"); */
 886                         fprintf(stderr, "Not enough space for expected SOP marker\n");
 887                 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
 888                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Expected SOP marker\n"); */
 889                         fprintf(stderr, "Warning: expected SOP marker\n");
 890                 } else {
 891                         l_current_data += 6;
 892                 }
 893
 894                 /** TODO : check the Nsop value */
 895         }
 896
 897         /*
 898         When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
 899         This part deal with this caracteristic
 900         step 1: Read packet header in the saved structure
 901         step 2: Return to codestream for decoding
 902         */
 903
 904         l_bio = opj_bio_create();
 905         if (! l_bio) {
 906                 return OPJ_FALSE;
 907         }
 908
 909         if (l_cp->ppm == 1) { /* PPM */
 910                 l_header_data_start = &l_cp->ppm_data;
 911                 l_header_data = *l_header_data_start;
 912                 l_modified_length_ptr = &(l_cp->ppm_len);
 913
 914         }
 915         else if (p_tcp->ppt == 1) { /* PPT */
 916                 l_header_data_start = &(p_tcp->ppt_data);
 917                 l_header_data = *l_header_data_start;
 918                 l_modified_length_ptr = &(p_tcp->ppt_len);
 919         }
 920         else {  /* Normal Case */
 921                 l_header_data_start = &(l_current_data);
 922                 l_header_data = *l_header_data_start;
 923                 l_remaining_length = (OPJ_UINT32)(p_src_data+p_max_length-l_header_data);
 924                 l_modified_length_ptr = &(l_remaining_length);
 925         }
 926
 927         opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
 928
 929         l_present = opj_bio_read(l_bio, 1);
 930         JAS_FPRINTF(stderr, "present=%d \n", l_present );
 931         if (!l_present) {
 932             /* TODO MSD: no test to control the output of this function*/
 933                 opj_bio_inalign(l_bio);
 934                 l_header_data += opj_bio_numbytes(l_bio);
 935                 opj_bio_destroy(l_bio);
 936
 937                 /* EPH markers */
 938                 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
 939                         if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) {
 940                                 fprintf(stderr, "Not enough space for expected EPH marker\n");
 941                         } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
 942                                 fprintf(stderr, "Error : expected EPH marker\n");
 943                         } else {
 944                                 l_header_data += 2;
 945                         }
 946                 }
 947
 948                 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
 949                 *l_modified_length_ptr -= l_header_length;
 950                 *l_header_data_start += l_header_length;
 951
 952                 /* << INDEX */
 953                 /* End of packet header position. Currently only represents the distance to start of packet
 954                    Will be updated later by incrementing with packet start value */
 955                 if (p_pack_info) {
 956                         p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
 957                 }
 958                 /* INDEX >> */
 959
 960                 * p_is_data_present = OPJ_FALSE;
 961                 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
 962                 return OPJ_TRUE;
 963         }
 964
 965         l_band = l_res->bands;
 966         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
 967                 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
 968
 969                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
 970                         ++l_band;
 971                         continue;
 972                 }
 973
 974                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
 975                 l_cblk = l_prc->cblks.dec;
 976                 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
 977                         OPJ_UINT32 l_included,l_increment, l_segno;
 978                         OPJ_INT32 n;
 979
 980                         /* if cblk not yet included before --> inclusion tagtree */
 981                         if (!l_cblk->numsegs) {
 982                                 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, (OPJ_INT32)(p_pi->layno + 1));
 983                                 /* else one bit */
 984                         }
 985                         else {
 986                                 l_included = opj_bio_read(l_bio, 1);
 987                         }
 988
 989                         /* if cblk not included */
 990                         if (!l_included) {
 991                                 l_cblk->numnewpasses = 0;
 992                                 ++l_cblk;
 993         JAS_FPRINTF(stderr, "included=%d \n", l_included);
 994                                 continue;
 995                         }
 996
 997                         /* if cblk not yet included --> zero-bitplane tagtree */
 998                         if (!l_cblk->numsegs) {
 999                                 OPJ_UINT32 i = 0;
1000
1001                                 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1002                                         ++i;
1003                                 }
1004
1005                                 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1006                                 l_cblk->numlenbits = 3;
1007                         }
1008
1009                         /* number of coding passes */
1010                         l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1011                         l_increment = opj_t2_getcommacode(l_bio);
1012
1013                         /* length indicator increment */
1014                         l_cblk->numlenbits += l_increment;
1015                         l_segno = 0;
1016
1017                         if (!l_cblk->numsegs) {
1018                                 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1019                                         opj_bio_destroy(l_bio);
1020                                         return OPJ_FALSE;
1021                                 }
1022                         }
1023                         else {
1024                                 l_segno = l_cblk->numsegs - 1;
1025                                 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1026                                         ++l_segno;
1027                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1028                                                 opj_bio_destroy(l_bio);
1029                                                 return OPJ_FALSE;
1030                                         }
1031                                 }
1032                         }
1033                         n = (OPJ_INT32)l_cblk->numnewpasses;
1034
1035                         do {
1036                                 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);
1037                                 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
1038                                         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 );
1039
1040                                 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1041                                 if (n > 0) {
1042                                         ++l_segno;
1043
1044                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1045                                                 opj_bio_destroy(l_bio);
1046                                                 return OPJ_FALSE;
1047                                         }
1048                                 }
1049                         } while (n > 0);
1050
1051                         ++l_cblk;
1052                 }
1053
1054                 ++l_band;
1055         }
1056
1057         if (!opj_bio_inalign(l_bio)) {
1058                 opj_bio_destroy(l_bio);
1059                 return OPJ_FALSE;
1060         }
1061
1062         l_header_data += opj_bio_numbytes(l_bio);
1063         opj_bio_destroy(l_bio);
1064
1065         /* EPH markers */
1066         if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1067                 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) {
1068                         fprintf(stderr, "Not enough space for expected EPH marker\n");
1069                 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1070                         /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n"); */
1071                         fprintf(stderr, "Error : expected EPH marker\n");
1072                 } else {
1073                         l_header_data += 2;
1074                 }
1075         }
1076
1077         l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1078         JAS_FPRINTF( stderr, "hdrlen=%d \n", l_header_length );
1079         JAS_FPRINTF( stderr, "packet body\n");
1080         *l_modified_length_ptr -= l_header_length;
1081         *l_header_data_start += l_header_length;
1082
1083         /* << INDEX */
1084         /* End of packet header position. Currently only represents the distance to start of packet
1085          Will be updated later by incrementing with packet start value */
1086         if (p_pack_info) {
1087                 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1088         }
1089         /* INDEX >> */
1090
1091         *p_is_data_present = OPJ_TRUE;
1092         *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1093
1094         return OPJ_TRUE;
1095 }
1096
1097 static OPJ_BOOL opj_t2_read_packet_data(   opj_t2_t* p_t2,
1098                                     opj_tcd_tile_t *p_tile,
1099                                     opj_pi_iterator_t *p_pi,
1100                                     OPJ_BYTE *p_src_data,
1101                                     OPJ_UINT32 * p_data_read,
1102                                     OPJ_UINT32 p_max_length,
1103                                     opj_packet_info_t *pack_info)
1104 {
1105         OPJ_UINT32 bandno, cblkno;
1106         OPJ_UINT32 l_nb_code_blocks;
1107         OPJ_BYTE *l_current_data = p_src_data;
1108         opj_tcd_band_t *l_band = 00;
1109         opj_tcd_cblk_dec_t* l_cblk = 00;
1110         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1111
1112         OPJ_ARG_NOT_USED(p_t2);
1113         OPJ_ARG_NOT_USED(pack_info);
1114
1115         l_band = l_res->bands;
1116         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1117                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1118
1119                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1120                         ++l_band;
1121                         continue;
1122                 }
1123
1124                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1125                 l_cblk = l_prc->cblks.dec;
1126
1127                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1128                         opj_tcd_seg_t *l_seg = 00;
1129
1130                         if (!l_cblk->numnewpasses) {
1131                                 /* nothing to do */
1132                                 ++l_cblk;
1133                                 continue;
1134                         }
1135
1136                         if (!l_cblk->numsegs) {
1137                                 l_seg = l_cblk->segs;
1138                                 ++l_cblk->numsegs;
1139                                 l_cblk->data_current_size = 0;
1140                         }
1141                         else {
1142                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1143
1144                                 if (l_seg->numpasses == l_seg->maxpasses) {
1145                                         ++l_seg;
1146                                         ++l_cblk->numsegs;
1147                                 }
1148                         }
1149
1150                         do {
1151                                 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1152                                 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)) {
1153                                         fprintf(stderr, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1154                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1155                                         return OPJ_FALSE;
1156                                 }
1157
1158 #ifdef USE_JPWL
1159                         /* we need here a j2k handle to verify if making a check to
1160                         the validity of cblocks parameters is selected from user (-W) */
1161
1162                                 /* let's check that we are not exceeding */
1163                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1164                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1165                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1166                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1167                                         if (!JPWL_ASSUME) {
1168                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1169                                                 return OPJ_FALSE;
1170                                         }
1171                                         l_seg->newlen = 8192 - l_cblk->len;
1172                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1173                                         break;
1174                                 };
1175
1176 #endif /* USE_JPWL */
1177                                 /* Check possible overflow on size */
1178                                 if ((l_cblk->data_current_size + l_seg->newlen) < l_cblk->data_current_size) {
1179                                         fprintf(stderr, "read: segment too long (%d) with current size (%d > %d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1180                                                 l_seg->newlen, l_cblk->data_current_size, 0xFFFFFFFF - l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1181                                         return OPJ_FALSE;
1182                                 }
1183                                 /* Check if the cblk->data have allocated enough memory */
1184                                 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1185                                     OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1186                                     if(! new_cblk_data) {
1187                                         opj_free(l_cblk->data);
1188                                         l_cblk->data = NULL;
1189                                         l_cblk->data_max_size = 0;
1190                                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1191                                         return OPJ_FALSE;
1192                                     }
1193                                     l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1194                                     l_cblk->data = new_cblk_data;
1195                                 }
1196
1197                                 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1198
1199                                 if (l_seg->numpasses == 0) {
1200                                         l_seg->data = &l_cblk->data;
1201                                         l_seg->dataindex = l_cblk->data_current_size;
1202                                 }
1203
1204                                 l_current_data += l_seg->newlen;
1205                                 l_seg->numpasses += l_seg->numnewpasses;
1206                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1207
1208                                 l_seg->real_num_passes = l_seg->numpasses;
1209                                 l_cblk->data_current_size += l_seg->newlen;
1210                                 l_seg->len += l_seg->newlen;
1211
1212                                 if (l_cblk->numnewpasses > 0) {
1213                                         ++l_seg;
1214                                         ++l_cblk->numsegs;
1215                                 }
1216                         } while (l_cblk->numnewpasses > 0);
1217
1218                         l_cblk->real_num_segs = l_cblk->numsegs;
1219                         ++l_cblk;
1220                 } /* next code_block */
1221
1222                 ++l_band;
1223         }
1224
1225         *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1226
1227
1228         return OPJ_TRUE;
1229 }
1230
1231 static OPJ_BOOL opj_t2_skip_packet_data(   opj_t2_t* p_t2,
1232                                     opj_tcd_tile_t *p_tile,
1233                                     opj_pi_iterator_t *p_pi,
1234                                     OPJ_UINT32 * p_data_read,
1235                                     OPJ_UINT32 p_max_length,
1236                                     opj_packet_info_t *pack_info)
1237 {
1238         OPJ_UINT32 bandno, cblkno;
1239         OPJ_UINT32 l_nb_code_blocks;
1240         opj_tcd_band_t *l_band = 00;
1241         opj_tcd_cblk_dec_t* l_cblk = 00;
1242         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1243
1244         OPJ_ARG_NOT_USED(p_t2);
1245         OPJ_ARG_NOT_USED(pack_info);
1246
1247         *p_data_read = 0;
1248         l_band = l_res->bands;
1249
1250         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1251                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1252
1253                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1254                         ++l_band;
1255                         continue;
1256                 }
1257
1258                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1259                 l_cblk = l_prc->cblks.dec;
1260
1261                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1262                         opj_tcd_seg_t *l_seg = 00;
1263
1264                         if (!l_cblk->numnewpasses) {
1265                                 /* nothing to do */
1266                                 ++l_cblk;
1267                                 continue;
1268                         }
1269
1270                         if (!l_cblk->numsegs) {
1271                                 l_seg = l_cblk->segs;
1272                                 ++l_cblk->numsegs;
1273                                 l_cblk->data_current_size = 0;
1274                         }
1275                         else {
1276                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1277
1278                                 if (l_seg->numpasses == l_seg->maxpasses) {
1279                                         ++l_seg;
1280                                         ++l_cblk->numsegs;
1281                                 }
1282                         }
1283
1284                         do {
1285                                 /* Check possible overflow then size */
1286                                 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) || ((*p_data_read + l_seg->newlen) > p_max_length)) {
1287                                         fprintf(stderr, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1288                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1289                                         return OPJ_FALSE;
1290                                 }
1291
1292 #ifdef USE_JPWL
1293                         /* we need here a j2k handle to verify if making a check to
1294                         the validity of cblocks parameters is selected from user (-W) */
1295
1296                                 /* let's check that we are not exceeding */
1297                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1298                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1299                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1300                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1301                                         if (!JPWL_ASSUME) {
1302                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1303                                                 return -999;
1304                                         }
1305                                         l_seg->newlen = 8192 - l_cblk->len;
1306                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1307                                         break;
1308                                 };
1309
1310 #endif /* USE_JPWL */
1311                                         JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read, l_seg->newlen );
1312                                 *(p_data_read) += l_seg->newlen;
1313
1314                                 l_seg->numpasses += l_seg->numnewpasses;
1315                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1316                                 if (l_cblk->numnewpasses > 0)
1317                                 {
1318                                         ++l_seg;
1319                                         ++l_cblk->numsegs;
1320                                 }
1321                         } while (l_cblk->numnewpasses > 0);
1322
1323                         ++l_cblk;
1324                 }
1325
1326                 ++l_band;
1327         }
1328
1329         return OPJ_TRUE;
1330 }
1331
1332
1333 OPJ_BOOL opj_t2_init_seg(   opj_tcd_cblk_dec_t* cblk,
1334                             OPJ_UINT32 index,
1335                             OPJ_UINT32 cblksty,
1336                             OPJ_UINT32 first)
1337 {
1338         opj_tcd_seg_t* seg = 00;
1339         OPJ_UINT32 l_nb_segs = index + 1;
1340
1341         if (l_nb_segs > cblk->m_current_max_segs) {
1342                 opj_tcd_seg_t* new_segs;
1343                 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1344
1345                 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1346                 if(! new_segs) {
1347                         opj_free(cblk->segs);
1348                         cblk->segs = NULL;
1349                         cblk->m_current_max_segs = 0;
1350                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1351                         return OPJ_FALSE;
1352                 }
1353                 cblk->segs = new_segs;
1354         }
1355
1356         seg = &cblk->segs[index];
1357         memset(seg,0,sizeof(opj_tcd_seg_t));
1358
1359         if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1360                 seg->maxpasses = 1;
1361         }
1362         else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1363                 if (first) {
1364                         seg->maxpasses = 10;
1365                 } else {
1366                         seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1367                 }
1368         } else {
1369                 seg->maxpasses = 109;
1370         }
1371
1372         return OPJ_TRUE;
1373 }