src/third_party/pdfium/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/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 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 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 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 = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
 391                 if (!first_pass_failed)
 392                 {
 393                     opj_pi_destroy(l_pi,l_nb_pocs);
 394                     return OPJ_FALSE;
 395                 }
 396                 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
 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                 while (opj_pi_next(l_current_pi)) {
 404                   JAS_FPRINTF( stderr, "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
 405                     l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno );
 406
 407                         if (l_tcp->num_layers_to_decode > l_current_pi->layno
 408                                         && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
 409                                 l_nb_bytes_read = 0;
 410
 411                                 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
 412
 413                                 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)) {
 414                                         opj_pi_destroy(l_pi,l_nb_pocs);
 415                                         opj_free(first_pass_failed);
 416                                         return OPJ_FALSE;
 417                                 }
 418
 419                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 420                                 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
 421                         }
 422                         else {
 423                                 l_nb_bytes_read = 0;
 424                                 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)) {
 425                                         opj_pi_destroy(l_pi,l_nb_pocs);
 426                                         opj_free(first_pass_failed);
 427                                         return OPJ_FALSE;
 428                                 }
 429                         }
 430
 431                         if (first_pass_failed[l_current_pi->compno]) {
 432                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 433                                 if (l_img_comp->resno_decoded == 0)
 434                                         l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
 435                         }
 436
 437                         l_current_data += l_nb_bytes_read;
 438                         p_max_len -= l_nb_bytes_read;
 439
 440                         /* INDEX >> */
 441 #ifdef TODO_MSD
 442                         if(p_cstr_info) {
 443                                 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
 444                                 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
 445                                 tp_start_packno = 0;
 446                                 if (!p_cstr_info->packno) {
 447                                         info_PK->start_pos = info_TL->end_header + 1;
 448                                 } 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 */
 449                                         info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */
 450                                         tp_start_packno = p_cstr_info->packno;
 451                                         curtp++;
 452                                         info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header+1;
 453                                 } else {
 454                                         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;
 455                                 }
 456                                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
 457                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance */
 458                                 ++p_cstr_info->packno;
 459                         }
 460 #endif
 461                         /* << INDEX */
 462                 }
 463                 ++l_current_pi;
 464
 465                 opj_free(first_pass_failed);
 466         }
 467         /* INDEX >> */
 468 #ifdef TODO_MSD
 469         if
 470                 (p_cstr_info) {
 471                 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 */
 472         }
 473 #endif
 474         /* << INDEX */
 475
 476         /* don't forget to release pi */
 477         opj_pi_destroy(l_pi,l_nb_pocs);
 478         *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
 479         return OPJ_TRUE;
 480 }
 481
 482 /* ----------------------------------------------------------------------- */
 483
 484 /**
 485  * Creates a Tier 2 handle
 486  *
 487  * @param       p_image         Source or destination image
 488  * @param       p_cp            Image coding parameters.
 489  * @return              a new T2 handle if successful, NULL otherwise.
 490 */
 491 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
 492 {
 493         /* create the t2 structure */
 494         opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1,sizeof(opj_t2_t));
 495         if (!l_t2) {
 496                 return NULL;
 497         }
 498
 499         l_t2->image = p_image;
 500         l_t2->cp = p_cp;
 501
 502         return l_t2;
 503 }
 504
 505 void opj_t2_destroy(opj_t2_t *t2) {
 506         if(t2) {
 507                 opj_free(t2);
 508         }
 509 }
 510
 511 OPJ_BOOL opj_t2_decode_packet(  opj_t2_t* p_t2,
 512                                 opj_tcd_tile_t *p_tile,
 513                                 opj_tcp_t *p_tcp,
 514                                 opj_pi_iterator_t *p_pi,
 515                                 OPJ_BYTE *p_src,
 516                                 OPJ_UINT32 * p_data_read,
 517                                 OPJ_UINT32 p_max_length,
 518                                 opj_packet_info_t *p_pack_info)
 519 {
 520         OPJ_BOOL l_read_data;
 521         OPJ_UINT32 l_nb_bytes_read = 0;
 522         OPJ_UINT32 l_nb_total_bytes_read = 0;
 523
 524         *p_data_read = 0;
 525
 526         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)) {
 527                 return OPJ_FALSE;
 528         }
 529
 530         p_src += l_nb_bytes_read;
 531         l_nb_total_bytes_read += l_nb_bytes_read;
 532         p_max_length -= l_nb_bytes_read;
 533
 534         /* we should read data for the packet */
 535         if (l_read_data) {
 536                 l_nb_bytes_read = 0;
 537
 538                 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info)) {
 539                         return OPJ_FALSE;
 540                 }
 541
 542                 l_nb_total_bytes_read += l_nb_bytes_read;
 543         }
 544
 545         *p_data_read = l_nb_total_bytes_read;
 546
 547         return OPJ_TRUE;
 548 }
 549
 550 OPJ_BOOL opj_t2_encode_packet(  OPJ_UINT32 tileno,
 551                                 opj_tcd_tile_t * tile,
 552                                 opj_tcp_t * tcp,
 553                                 opj_pi_iterator_t *pi,
 554                                 OPJ_BYTE *dest,
 555                                 OPJ_UINT32 * p_data_written,
 556                                 OPJ_UINT32 length,
 557                                 opj_codestream_info_t *cstr_info)
 558 {
 559         OPJ_UINT32 bandno, cblkno;
 560         OPJ_BYTE* c = dest;
 561         OPJ_UINT32 l_nb_bytes;
 562         OPJ_UINT32 compno = pi->compno;     /* component value */
 563         OPJ_UINT32 resno  = pi->resno;      /* resolution level value */
 564         OPJ_UINT32 precno = pi->precno;     /* precinct value */
 565         OPJ_UINT32 layno  = pi->layno;      /* quality layer value */
 566         OPJ_UINT32 l_nb_blocks;
 567         opj_tcd_band_t *band = 00;
 568         opj_tcd_cblk_enc_t* cblk = 00;
 569         opj_tcd_pass_t *pass = 00;
 570
 571         opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
 572         opj_tcd_resolution_t *res = &tilec->resolutions[resno];
 573
 574         opj_bio_t *bio = 00;    /* BIO component */
 575
 576         /* <SOP 0xff91> */
 577         if (tcp->csty & J2K_CP_CSTY_SOP) {
 578                 c[0] = 255;
 579                 c[1] = 145;
 580                 c[2] = 0;
 581                 c[3] = 4;
 582 #if 0
 583                 c[4] = (tile->packno % 65536) / 256;
 584                 c[5] = (tile->packno % 65536) % 256;
 585 #else
 586                 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
 587                 c[5] = tile->packno & 0xff;
 588 #endif
 589                 c += 6;
 590                 length -= 6;
 591         }
 592         /* </SOP> */
 593
 594         if (!layno) {
 595                 band = res->bands;
 596
 597                 for(bandno = 0; bandno < res->numbands; ++bandno) {
 598                         opj_tcd_precinct_t *prc = &band->precincts[precno];
 599
 600                         opj_tgt_reset(prc->incltree);
 601                         opj_tgt_reset(prc->imsbtree);
 602
 603                         l_nb_blocks = prc->cw * prc->ch;
 604                         for     (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 605                                 cblk = &prc->cblks.enc[cblkno];
 606
 607                                 cblk->numpasses = 0;
 608                                 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
 609                         }
 610                         ++band;
 611                 }
 612         }
 613
 614         bio = opj_bio_create();
 615         if (!bio) {
 616                 /* FIXME event manager error callback */
 617                 return OPJ_FALSE;
 618         }
 619         opj_bio_init_enc(bio, c, length);
 620         opj_bio_write(bio, 1, 1);           /* Empty header bit */
 621
 622         /* Writing Packet header */
 623         band = res->bands;
 624         for (bandno = 0; bandno < res->numbands; ++bandno)      {
 625                 opj_tcd_precinct_t *prc = &band->precincts[precno];
 626
 627                 l_nb_blocks = prc->cw * prc->ch;
 628                 cblk = prc->cblks.enc;
 629
 630                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 631                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 632
 633                         if (!cblk->numpasses && layer->numpasses) {
 634                                 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
 635                         }
 636
 637                         ++cblk;
 638                 }
 639
 640                 cblk = prc->cblks.enc;
 641                 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
 642                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 643                         OPJ_UINT32 increment = 0;
 644                         OPJ_UINT32 nump = 0;
 645                         OPJ_UINT32 len = 0, passno;
 646                         OPJ_UINT32 l_nb_passes;
 647
 648                         /* cblk inclusion bits */
 649                         if (!cblk->numpasses) {
 650                                 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
 651                         } else {
 652                                 opj_bio_write(bio, layer->numpasses != 0, 1);
 653                         }
 654
 655                         /* if cblk not included, go to the next cblk  */
 656                         if (!layer->numpasses) {
 657                                 ++cblk;
 658                                 continue;
 659                         }
 660
 661                         /* if first instance of cblk --> zero bit-planes information */
 662                         if (!cblk->numpasses) {
 663                                 cblk->numlenbits = 3;
 664                                 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
 665                         }
 666
 667                         /* number of coding passes included */
 668                         opj_t2_putnumpasses(bio, layer->numpasses);
 669                         l_nb_passes = cblk->numpasses + layer->numpasses;
 670                         pass = cblk->passes +  cblk->numpasses;
 671
 672                         /* computation of the increase of the length indicator and insertion in the header     */
 673                         for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 674                                 ++nump;
 675                                 len += pass->len;
 676
 677                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 678                                   increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment, opj_int_floorlog2((OPJ_INT32)len) + 1
 679                                     - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
 680                                         len = 0;
 681                                         nump = 0;
 682                                 }
 683
 684                                 ++pass;
 685                         }
 686                         opj_t2_putcommacode(bio, (OPJ_INT32)increment);
 687
 688                         /* computation of the new Length indicator */
 689                         cblk->numlenbits += increment;
 690
 691                         pass = cblk->passes +  cblk->numpasses;
 692                         /* insertion of the codeword segment length */
 693                         for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 694                                 nump++;
 695                                 len += pass->len;
 696
 697                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 698                                         opj_bio_write(bio, (OPJ_UINT32)len, cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
 699                                         len = 0;
 700                                         nump = 0;
 701                                 }
 702                                 ++pass;
 703                         }
 704
 705                         ++cblk;
 706                 }
 707
 708                 ++band;
 709         }
 710
 711         if (!opj_bio_flush(bio)) {
 712                 opj_bio_destroy(bio);
 713                 return OPJ_FALSE;               /* modified to eliminate longjmp !! */
 714         }
 715
 716         l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
 717         c += l_nb_bytes;
 718         length -= l_nb_bytes;
 719
 720         opj_bio_destroy(bio);
 721
 722         /* <EPH 0xff92> */
 723         if (tcp->csty & J2K_CP_CSTY_EPH) {
 724                 c[0] = 255;
 725                 c[1] = 146;
 726                 c += 2;
 727                 length -= 2;
 728         }
 729         /* </EPH> */
 730
 731         /* << INDEX */
 732         /* End of packet header position. Currently only represents the distance to start of packet
 733            Will be updated later by incrementing with packet start value*/
 734         if(cstr_info && cstr_info->index_write) {
 735                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 736                 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
 737         }
 738         /* INDEX >> */
 739
 740         /* Writing the packet body */
 741         band = res->bands;
 742         for (bandno = 0; bandno < res->numbands; bandno++) {
 743                 opj_tcd_precinct_t *prc = &band->precincts[precno];
 744
 745                 l_nb_blocks = prc->cw * prc->ch;
 746                 cblk = prc->cblks.enc;
 747
 748                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 749                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 750
 751                         if (!layer->numpasses) {
 752                                 ++cblk;
 753                                 continue;
 754                         }
 755
 756                         if (layer->len > length) {
 757                                 return OPJ_FALSE;
 758                         }
 759
 760                         memcpy(c, layer->data, layer->len);
 761                         cblk->numpasses += layer->numpasses;
 762                         c += layer->len;
 763                         length -= layer->len;
 764
 765                         /* << INDEX */
 766                         if(cstr_info && cstr_info->index_write) {
 767                                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 768                                 info_PK->disto += layer->disto;
 769                                 if (cstr_info->D_max < info_PK->disto) {
 770                                         cstr_info->D_max = info_PK->disto;
 771                                 }
 772                         }
 773
 774                         ++cblk;
 775                         /* INDEX >> */
 776                 }
 777                 ++band;
 778         }
 779
 780         assert( c >= dest );
 781         * p_data_written += (OPJ_UINT32)(c - dest);
 782
 783         return OPJ_TRUE;
 784 }
 785
 786 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
 787                                     opj_tcd_tile_t *p_tile,
 788                                     opj_tcp_t *p_tcp,
 789                                     opj_pi_iterator_t *p_pi,
 790                                     OPJ_BYTE *p_src,
 791                                     OPJ_UINT32 * p_data_read,
 792                                     OPJ_UINT32 p_max_length,
 793                                     opj_packet_info_t *p_pack_info)
 794 {
 795         OPJ_BOOL l_read_data;
 796         OPJ_UINT32 l_nb_bytes_read = 0;
 797         OPJ_UINT32 l_nb_total_bytes_read = 0;
 798
 799         *p_data_read = 0;
 800
 801         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)) {
 802                 return OPJ_FALSE;
 803         }
 804
 805         p_src += l_nb_bytes_read;
 806         l_nb_total_bytes_read += l_nb_bytes_read;
 807         p_max_length -= l_nb_bytes_read;
 808
 809         /* we should read data for the packet */
 810         if (l_read_data) {
 811                 l_nb_bytes_read = 0;
 812
 813                 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info)) {
 814                         return OPJ_FALSE;
 815                 }
 816
 817                 l_nb_total_bytes_read += l_nb_bytes_read;
 818         }
 819         *p_data_read = l_nb_total_bytes_read;
 820
 821         return OPJ_TRUE;
 822 }
 823
 824
 825 OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
 826                                     opj_tcd_tile_t *p_tile,
 827                                     opj_tcp_t *p_tcp,
 828                                     opj_pi_iterator_t *p_pi,
 829                                     OPJ_BOOL * p_is_data_present,
 830                                     OPJ_BYTE *p_src_data,
 831                                     OPJ_UINT32 * p_data_read,
 832                                     OPJ_UINT32 p_max_length,
 833                                     opj_packet_info_t *p_pack_info)
 834
 835 {
 836         /* loop */
 837         OPJ_UINT32 bandno, cblkno;
 838         OPJ_UINT32 l_nb_code_blocks;
 839         OPJ_UINT32 l_remaining_length;
 840         OPJ_UINT32 l_header_length;
 841         OPJ_UINT32 * l_modified_length_ptr = 00;
 842         OPJ_BYTE *l_current_data = p_src_data;
 843         opj_cp_t *l_cp = p_t2->cp;
 844         opj_bio_t *l_bio = 00;  /* BIO component */
 845         opj_tcd_band_t *l_band = 00;
 846         opj_tcd_cblk_dec_t* l_cblk = 00;
 847         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
 848
 849         OPJ_BYTE *l_header_data = 00;
 850         OPJ_BYTE **l_header_data_start = 00;
 851
 852         OPJ_UINT32 l_present;
 853
 854         if (p_pi->layno == 0) {
 855                 l_band = l_res->bands;
 856
 857                 /* reset tagtrees */
 858                 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
 859                         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
 860
 861                         if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
 862                                 opj_tgt_reset(l_prc->incltree);
 863                                 opj_tgt_reset(l_prc->imsbtree);
 864                                 l_cblk = l_prc->cblks.dec;
 865
 866                                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
 867                                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
 868                                         l_cblk->numsegs = 0;
 869                                         l_cblk->real_num_segs = 0;
 870                                         ++l_cblk;
 871                                 }
 872                         }
 873
 874                         ++l_band;
 875                 }
 876         }
 877
 878         /* SOP markers */
 879
 880         if (p_tcp->csty & J2K_CP_CSTY_SOP) {
 881                 if (p_max_length < 6) {
 882                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Not enough space for expected SOP marker\n"); */
 883                         fprintf(stderr, "Not enough space for expected SOP marker\n");
 884                 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
 885                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Expected SOP marker\n"); */
 886                         fprintf(stderr, "Warning: expected SOP marker\n");
 887                 } else {
 888                         l_current_data += 6;
 889                 }
 890
 891                 /** TODO : check the Nsop value */
 892         }
 893
 894         /*
 895         When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
 896         This part deal with this caracteristic
 897         step 1: Read packet header in the saved structure
 898         step 2: Return to codestream for decoding
 899         */
 900
 901         l_bio = opj_bio_create();
 902         if (! l_bio) {
 903                 return OPJ_FALSE;
 904         }
 905
 906         if (l_cp->ppm == 1) { /* PPM */
 907                 l_header_data_start = &l_cp->ppm_data;
 908                 l_header_data = *l_header_data_start;
 909                 l_modified_length_ptr = &(l_cp->ppm_len);
 910
 911         }
 912         else if (p_tcp->ppt == 1) { /* PPT */
 913                 l_header_data_start = &(p_tcp->ppt_data);
 914                 l_header_data = *l_header_data_start;
 915                 l_modified_length_ptr = &(p_tcp->ppt_len);
 916         }
 917         else {  /* Normal Case */
 918                 l_header_data_start = &(l_current_data);
 919                 l_header_data = *l_header_data_start;
 920                 l_remaining_length = (OPJ_UINT32)(p_src_data+p_max_length-l_header_data);
 921                 l_modified_length_ptr = &(l_remaining_length);
 922         }
 923
 924         opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
 925
 926         l_present = opj_bio_read(l_bio, 1);
 927         JAS_FPRINTF(stderr, "present=%d \n", l_present );
 928         if (!l_present) {
 929             /* TODO MSD: no test to control the output of this function*/
 930                 opj_bio_inalign(l_bio);
 931                 l_header_data += opj_bio_numbytes(l_bio);
 932                 opj_bio_destroy(l_bio);
 933
 934                 /* EPH markers */
 935                 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
 936                         if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) {
 937                                 fprintf(stderr, "Not enough space for expected EPH marker\n");
 938                         } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
 939                                 fprintf(stderr, "Error : expected EPH marker\n");
 940                         } else {
 941                                 l_header_data += 2;
 942                         }
 943                 }
 944
 945                 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
 946                 *l_modified_length_ptr -= l_header_length;
 947                 *l_header_data_start += l_header_length;
 948
 949                 /* << INDEX */
 950                 /* End of packet header position. Currently only represents the distance to start of packet
 951                    Will be updated later by incrementing with packet start value */
 952                 if (p_pack_info) {
 953                         p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
 954                 }
 955                 /* INDEX >> */
 956
 957                 * p_is_data_present = OPJ_FALSE;
 958                 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
 959                 return OPJ_TRUE;
 960         }
 961
 962         l_band = l_res->bands;
 963         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
 964                 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
 965
 966                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
 967                         ++l_band;
 968                         continue;
 969                 }
 970
 971                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
 972                 l_cblk = l_prc->cblks.dec;
 973                 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
 974                         OPJ_UINT32 l_included,l_increment, l_segno;
 975                         OPJ_INT32 n;
 976
 977                         /* if cblk not yet included before --> inclusion tagtree */
 978                         if (!l_cblk->numsegs) {
 979                                 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, (OPJ_INT32)(p_pi->layno + 1));
 980                                 /* else one bit */
 981                         }
 982                         else {
 983                                 l_included = opj_bio_read(l_bio, 1);
 984                         }
 985
 986                         /* if cblk not included */
 987                         if (!l_included) {
 988                                 l_cblk->numnewpasses = 0;
 989                                 ++l_cblk;
 990         JAS_FPRINTF(stderr, "included=%d \n", l_included);
 991                                 continue;
 992                         }
 993
 994                         /* if cblk not yet included --> zero-bitplane tagtree */
 995                         if (!l_cblk->numsegs) {
 996                                 OPJ_UINT32 i = 0;
 997
 998                                 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
 999                                         ++i;
1000                                 }
1001
1002                                 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1003                                 l_cblk->numlenbits = 3;
1004                         }
1005
1006                         /* number of coding passes */
1007                         l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1008                         l_increment = opj_t2_getcommacode(l_bio);
1009
1010                         /* length indicator increment */
1011                         l_cblk->numlenbits += l_increment;
1012                         l_segno = 0;
1013
1014                         if (!l_cblk->numsegs) {
1015                                 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1016                                         opj_bio_destroy(l_bio);
1017                                         return OPJ_FALSE;
1018                                 }
1019                         }
1020                         else {
1021                                 l_segno = l_cblk->numsegs - 1;
1022                                 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1023                                         ++l_segno;
1024                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1025                                                 opj_bio_destroy(l_bio);
1026                                                 return OPJ_FALSE;
1027                                         }
1028                                 }
1029                         }
1030                         n = (OPJ_INT32)l_cblk->numnewpasses;
1031
1032                         do {
1033                                 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);
1034                                 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
1035                                         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 );
1036
1037                                 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1038                                 if (n > 0) {
1039                                         ++l_segno;
1040
1041                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1042                                                 opj_bio_destroy(l_bio);
1043                                                 return OPJ_FALSE;
1044                                         }
1045                                 }
1046                         } while (n > 0);
1047
1048                         ++l_cblk;
1049                 }
1050
1051                 ++l_band;
1052         }
1053
1054         if (!opj_bio_inalign(l_bio)) {
1055                 opj_bio_destroy(l_bio);
1056                 return OPJ_FALSE;
1057         }
1058
1059         l_header_data += opj_bio_numbytes(l_bio);
1060         opj_bio_destroy(l_bio);
1061
1062         /* EPH markers */
1063         if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1064                 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) {
1065                         fprintf(stderr, "Not enough space for expected EPH marker\n");
1066                 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1067                         /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n"); */
1068                         fprintf(stderr, "Error : expected EPH marker\n");
1069                 } else {
1070                         l_header_data += 2;
1071                 }
1072         }
1073
1074         l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1075         JAS_FPRINTF( stderr, "hdrlen=%d \n", l_header_length );
1076         JAS_FPRINTF( stderr, "packet body\n");
1077         *l_modified_length_ptr -= l_header_length;
1078         *l_header_data_start += l_header_length;
1079
1080         /* << INDEX */
1081         /* End of packet header position. Currently only represents the distance to start of packet
1082          Will be updated later by incrementing with packet start value */
1083         if (p_pack_info) {
1084                 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1085         }
1086         /* INDEX >> */
1087
1088         *p_is_data_present = OPJ_TRUE;
1089         *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1090
1091         return OPJ_TRUE;
1092 }
1093
1094 OPJ_BOOL opj_t2_read_packet_data(   opj_t2_t* p_t2,
1095                                     opj_tcd_tile_t *p_tile,
1096                                     opj_pi_iterator_t *p_pi,
1097                                     OPJ_BYTE *p_src_data,
1098                                     OPJ_UINT32 * p_data_read,
1099                                     OPJ_UINT32 p_max_length,
1100                                     opj_packet_info_t *pack_info)
1101 {
1102         OPJ_UINT32 bandno, cblkno;
1103         OPJ_UINT32 l_nb_code_blocks;
1104         OPJ_BYTE *l_current_data = p_src_data;
1105         opj_tcd_band_t *l_band = 00;
1106         opj_tcd_cblk_dec_t* l_cblk = 00;
1107         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1108
1109         OPJ_ARG_NOT_USED(p_t2);
1110         OPJ_ARG_NOT_USED(pack_info);
1111
1112         l_band = l_res->bands;
1113         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1114                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1115
1116                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1117                         ++l_band;
1118                         continue;
1119                 }
1120
1121                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1122                 l_cblk = l_prc->cblks.dec;
1123
1124                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1125                         opj_tcd_seg_t *l_seg = 00;
1126
1127                         if (!l_cblk->numnewpasses) {
1128                                 /* nothing to do */
1129                                 ++l_cblk;
1130                                 continue;
1131                         }
1132
1133                         if (!l_cblk->numsegs) {
1134                                 l_seg = l_cblk->segs;
1135                                 ++l_cblk->numsegs;
1136                                 l_cblk->data_current_size = 0;
1137                         }
1138                         else {
1139                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1140
1141                                 if (l_seg->numpasses == l_seg->maxpasses) {
1142                                         ++l_seg;
1143                                         ++l_cblk->numsegs;
1144                                 }
1145                         }
1146
1147                         do {
1148                                 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1149                                 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)) {
1150                                         fprintf(stderr, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1151                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1152                                         return OPJ_FALSE;
1153                                 }
1154
1155 #ifdef USE_JPWL
1156                         /* we need here a j2k handle to verify if making a check to
1157                         the validity of cblocks parameters is selected from user (-W) */
1158
1159                                 /* let's check that we are not exceeding */
1160                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1161                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1162                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1163                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1164                                         if (!JPWL_ASSUME) {
1165                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1166                                                 return OPJ_FALSE;
1167                                         }
1168                                         l_seg->newlen = 8192 - l_cblk->len;
1169                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1170                                         break;
1171                                 };
1172
1173 #endif /* USE_JPWL */
1174                                 /* Check possible overflow on size */
1175                                 if ((l_cblk->data_current_size + l_seg->newlen) < l_cblk->data_current_size) {
1176                                         fprintf(stderr, "read: segment too long (%d) with current size (%d > %d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1177                                                 l_seg->newlen, l_cblk->data_current_size, 0xFFFFFFFF - l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1178                                         return OPJ_FALSE;
1179                                 }
1180                                 /* Check if the cblk->data have allocated enough memory */
1181                                 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1182                                     OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1183                                     if(! new_cblk_data) {
1184                                         opj_free(l_cblk->data);
1185                                         l_cblk->data = NULL;
1186                                         l_cblk->data_max_size = 0;
1187                                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1188                                         return OPJ_FALSE;
1189                                     }
1190                                     l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1191                                     l_cblk->data = new_cblk_data;
1192                                 }
1193
1194                                 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1195
1196                                 if (l_seg->numpasses == 0) {
1197                                         l_seg->data = &l_cblk->data;
1198                                         l_seg->dataindex = l_cblk->data_current_size;
1199                                 }
1200
1201                                 l_current_data += l_seg->newlen;
1202                                 l_seg->numpasses += l_seg->numnewpasses;
1203                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1204
1205                                 l_seg->real_num_passes = l_seg->numpasses;
1206                                 l_cblk->data_current_size += l_seg->newlen;
1207                                 l_seg->len += l_seg->newlen;
1208
1209                                 if (l_cblk->numnewpasses > 0) {
1210                                         ++l_seg;
1211                                         ++l_cblk->numsegs;
1212                                 }
1213                         } while (l_cblk->numnewpasses > 0);
1214
1215                         l_cblk->real_num_segs = l_cblk->numsegs;
1216                         ++l_cblk;
1217                 } /* next code_block */
1218
1219                 ++l_band;
1220         }
1221
1222         *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1223
1224
1225         return OPJ_TRUE;
1226 }
1227
1228 OPJ_BOOL opj_t2_skip_packet_data(   opj_t2_t* p_t2,
1229                                     opj_tcd_tile_t *p_tile,
1230                                     opj_pi_iterator_t *p_pi,
1231                                     OPJ_UINT32 * p_data_read,
1232                                     OPJ_UINT32 p_max_length,
1233                                     opj_packet_info_t *pack_info)
1234 {
1235         OPJ_UINT32 bandno, cblkno;
1236         OPJ_UINT32 l_nb_code_blocks;
1237         opj_tcd_band_t *l_band = 00;
1238         opj_tcd_cblk_dec_t* l_cblk = 00;
1239         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1240
1241         OPJ_ARG_NOT_USED(p_t2);
1242         OPJ_ARG_NOT_USED(pack_info);
1243
1244         *p_data_read = 0;
1245         l_band = l_res->bands;
1246
1247         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1248                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1249
1250                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1251                         ++l_band;
1252                         continue;
1253                 }
1254
1255                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1256                 l_cblk = l_prc->cblks.dec;
1257
1258                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1259                         opj_tcd_seg_t *l_seg = 00;
1260
1261                         if (!l_cblk->numnewpasses) {
1262                                 /* nothing to do */
1263                                 ++l_cblk;
1264                                 continue;
1265                         }
1266
1267                         if (!l_cblk->numsegs) {
1268                                 l_seg = l_cblk->segs;
1269                                 ++l_cblk->numsegs;
1270                                 l_cblk->data_current_size = 0;
1271                         }
1272                         else {
1273                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1274
1275                                 if (l_seg->numpasses == l_seg->maxpasses) {
1276                                         ++l_seg;
1277                                         ++l_cblk->numsegs;
1278                                 }
1279                         }
1280
1281                         do {
1282                                 /* Check possible overflow then size */
1283                                 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) || ((*p_data_read + l_seg->newlen) > p_max_length)) {
1284                                         fprintf(stderr, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1285                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1286                                         return OPJ_FALSE;
1287                                 }
1288
1289 #ifdef USE_JPWL
1290                         /* we need here a j2k handle to verify if making a check to
1291                         the validity of cblocks parameters is selected from user (-W) */
1292
1293                                 /* let's check that we are not exceeding */
1294                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1295                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1296                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1297                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1298                                         if (!JPWL_ASSUME) {
1299                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1300                                                 return -999;
1301                                         }
1302                                         l_seg->newlen = 8192 - l_cblk->len;
1303                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1304                                         break;
1305                                 };
1306
1307 #endif /* USE_JPWL */
1308                                         JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read, l_seg->newlen );
1309                                 *(p_data_read) += l_seg->newlen;
1310
1311                                 l_seg->numpasses += l_seg->numnewpasses;
1312                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1313                                 if (l_cblk->numnewpasses > 0)
1314                                 {
1315                                         ++l_seg;
1316                                         ++l_cblk->numsegs;
1317                                 }
1318                         } while (l_cblk->numnewpasses > 0);
1319
1320                         ++l_cblk;
1321                 }
1322
1323                 ++l_band;
1324         }
1325
1326         return OPJ_TRUE;
1327 }
1328
1329
1330 OPJ_BOOL opj_t2_init_seg(   opj_tcd_cblk_dec_t* cblk,
1331                             OPJ_UINT32 index,
1332                             OPJ_UINT32 cblksty,
1333                             OPJ_UINT32 first)
1334 {
1335         opj_tcd_seg_t* seg = 00;
1336         OPJ_UINT32 l_nb_segs = index + 1;
1337
1338         if (l_nb_segs > cblk->m_current_max_segs) {
1339                 opj_tcd_seg_t* new_segs;
1340                 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1341
1342                 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1343                 if(! new_segs) {
1344                         opj_free(cblk->segs);
1345                         cblk->segs = NULL;
1346                         cblk->m_current_max_segs = 0;
1347                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1348                         return OPJ_FALSE;
1349                 }
1350                 cblk->segs = new_segs;
1351         }
1352
1353         seg = &cblk->segs[index];
1354         memset(seg,0,sizeof(opj_tcd_seg_t));
1355
1356         if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1357                 seg->maxpasses = 1;
1358         }
1359         else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1360                 if (first) {
1361                         seg->maxpasses = 10;
1362                 } else {
1363                         seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1364                 }
1365         } else {
1366                 seg->maxpasses = 109;
1367         }
1368
1369         return OPJ_TRUE;
1370 }