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 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->m_specific_param.m_enc.m_cinema == OPJ_CINEMA4K_24? 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                                 while (opj_pi_next(l_current_pi)) {
 246                                         if (l_current_pi->layno < p_maxlayers) {
 247                                                 l_nb_bytes = 0;
 248
 249                                                 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)) {
 250                                                         opj_pi_destroy(l_pi, l_nb_pocs);
 251                                                         return OPJ_FALSE;
 252                                                 }
 253
 254                                                 l_comp_len += l_nb_bytes;
 255                                                 l_current_data += l_nb_bytes;
 256                                                 p_max_len -= l_nb_bytes;
 257
 258                                                 * p_data_written += l_nb_bytes;
 259                                         }
 260                                 }
 261
 262                                 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
 263                                         if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
 264                                                 opj_pi_destroy(l_pi, l_nb_pocs);
 265                                                 return OPJ_FALSE;
 266                                         }
 267                                 }
 268
 269                                 ++l_current_pi;
 270                         }
 271                 }
 272         }
 273         else {  /* t2_mode == FINAL_PASS  */
 274                 opj_pi_create_encode(l_pi, l_cp,p_tile_no,p_pino,p_tp_num,p_tp_pos,p_t2_mode);
 275
 276                 l_current_pi = &l_pi[p_pino];
 277
 278                 while (opj_pi_next(l_current_pi)) {
 279                         if (l_current_pi->layno < p_maxlayers) {
 280                                 l_nb_bytes=0;
 281
 282                                 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)) {
 283                                         opj_pi_destroy(l_pi, l_nb_pocs);
 284                                         return OPJ_FALSE;
 285                                 }
 286
 287                                 l_current_data += l_nb_bytes;
 288                                 p_max_len -= l_nb_bytes;
 289
 290                                 * p_data_written += l_nb_bytes;
 291
 292                                 /* INDEX >> */
 293                                 if(cstr_info) {
 294                                         if(cstr_info->index_write) {
 295                                                 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
 296                                                 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
 297                                                 if (!cstr_info->packno) {
 298                                                         info_PK->start_pos = info_TL->end_header + 1;
 299                                                 } else {
 300                                                         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;
 301                                                 }
 302                                                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
 303                                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance
 304                                                                                                                                                                                                                                                    to start of packet is incremented by value of start of packet*/
 305                                         }
 306
 307                                         cstr_info->packno++;
 308                                 }
 309                                 /* << INDEX */
 310                                 ++p_tile->packno;
 311                         }
 312                 }
 313         }
 314
 315         opj_pi_destroy(l_pi, l_nb_pocs);
 316
 317         return OPJ_TRUE;
 318 }
 319
 320 /* see issue 80 */
 321 #if 0
 322 #define JAS_FPRINTF fprintf
 323 #else
 324 /* issue 290 */
 325 static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
 326 {
 327   (void)file;
 328   (void)format;
 329 }
 330 #define JAS_FPRINTF opj_null_jas_fprintf
 331 #endif
 332
 333 OPJ_BOOL opj_t2_decode_packets( opj_t2_t *p_t2,
 334                                 OPJ_UINT32 p_tile_no,
 335                                 opj_tcd_tile_t *p_tile,
 336                                 OPJ_BYTE *p_src,
 337                                 OPJ_UINT32 * p_data_read,
 338                                 OPJ_UINT32 p_max_len,
 339                                 opj_codestream_index_t *p_cstr_index)
 340 {
 341         OPJ_BYTE *l_current_data = p_src;
 342         opj_pi_iterator_t *l_pi = 00;
 343         OPJ_UINT32 pino;
 344         opj_image_t *l_image = p_t2->image;
 345         opj_cp_t *l_cp = p_t2->cp;
 346         opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
 347         OPJ_UINT32 l_nb_bytes_read;
 348         OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
 349         opj_pi_iterator_t *l_current_pi = 00;
 350 #ifdef TODO_MSD
 351         OPJ_UINT32 curtp = 0;
 352         OPJ_UINT32 tp_start_packno;
 353 #endif
 354         opj_packet_info_t *l_pack_info = 00;
 355         opj_image_comp_t* l_img_comp = 00;
 356
 357         OPJ_ARG_NOT_USED(p_cstr_index);
 358
 359 #ifdef TODO_MSD
 360         if (p_cstr_index) {
 361                 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
 362         }
 363 #endif
 364
 365         /* create a packet iterator */
 366         l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no);
 367         if (!l_pi) {
 368                 return OPJ_FALSE;
 369         }
 370
 371
 372         l_current_pi = l_pi;
 373
 374         for     (pino = 0; pino <= l_tcp->numpocs; ++pino) {
 375
 376                 /* if the resolution needed is too low, one dim of the tilec could be equal to zero
 377                  * and no packets are used to decode this resolution and
 378                  * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
 379                  * and no l_img_comp->resno_decoded are computed
 380                  */
 381                 OPJ_BOOL* first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
 382                 if (!first_pass_failed)
 383                 {
 384                     opj_pi_destroy(l_pi,l_nb_pocs);
 385                     return OPJ_FALSE;
 386                 }
 387                 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
 388
 389                 while (opj_pi_next(l_current_pi)) {
 390                   JAS_FPRINTF( stderr, "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
 391                     l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno );
 392
 393                         if (l_tcp->num_layers_to_decode > l_current_pi->layno
 394                                         && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
 395                                 l_nb_bytes_read = 0;
 396
 397                                 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
 398
 399                                 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)) {
 400                                         opj_pi_destroy(l_pi,l_nb_pocs);
 401                                         opj_free(first_pass_failed);
 402                                         return OPJ_FALSE;
 403                                 }
 404
 405                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 406                                 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
 407                         }
 408                         else {
 409                                 l_nb_bytes_read = 0;
 410                                 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)) {
 411                                         opj_pi_destroy(l_pi,l_nb_pocs);
 412                                         opj_free(first_pass_failed);
 413                                         return OPJ_FALSE;
 414                                 }
 415                         }
 416
 417                         if (first_pass_failed[l_current_pi->compno]) {
 418                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
 419                                 if (l_img_comp->resno_decoded == 0)
 420                                         l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
 421                         }
 422
 423                         l_current_data += l_nb_bytes_read;
 424                         p_max_len -= l_nb_bytes_read;
 425
 426                         /* INDEX >> */
 427 #ifdef TODO_MSD
 428                         if(p_cstr_info) {
 429                                 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
 430                                 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
 431                                 tp_start_packno = 0;
 432                                 if (!p_cstr_info->packno) {
 433                                         info_PK->start_pos = info_TL->end_header + 1;
 434                                 } 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 */
 435                                         info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */
 436                                         tp_start_packno = p_cstr_info->packno;
 437                                         curtp++;
 438                                         info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header+1;
 439                                 } else {
 440                                         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;
 441                                 }
 442                                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
 443                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance */
 444                                 ++p_cstr_info->packno;
 445                         }
 446 #endif
 447                         /* << INDEX */
 448                 }
 449                 ++l_current_pi;
 450
 451                 opj_free(first_pass_failed);
 452         }
 453         /* INDEX >> */
 454 #ifdef TODO_MSD
 455         if
 456                 (p_cstr_info) {
 457                 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 */
 458         }
 459 #endif
 460         /* << INDEX */
 461
 462         /* don't forget to release pi */
 463         opj_pi_destroy(l_pi,l_nb_pocs);
 464         *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
 465         return OPJ_TRUE;
 466 }
 467
 468 /* ----------------------------------------------------------------------- */
 469
 470 /**
 471  * Creates a Tier 2 handle
 472  *
 473  * @param       p_image         Source or destination image
 474  * @param       p_cp            Image coding parameters.
 475  * @return              a new T2 handle if successful, NULL otherwise.
 476 */
 477 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
 478 {
 479         /* create the t2 structure */
 480         opj_t2_t *l_t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
 481         if (!l_t2) {
 482                 return NULL;
 483         }
 484         memset(l_t2,0,sizeof(opj_t2_t));
 485
 486         l_t2->image = p_image;
 487         l_t2->cp = p_cp;
 488
 489         return l_t2;
 490 }
 491
 492 void opj_t2_destroy(opj_t2_t *t2) {
 493         if(t2) {
 494                 opj_free(t2);
 495         }
 496 }
 497
 498 OPJ_BOOL opj_t2_decode_packet(  opj_t2_t* p_t2,
 499                                 opj_tcd_tile_t *p_tile,
 500                                 opj_tcp_t *p_tcp,
 501                                 opj_pi_iterator_t *p_pi,
 502                                 OPJ_BYTE *p_src,
 503                                 OPJ_UINT32 * p_data_read,
 504                                 OPJ_UINT32 p_max_length,
 505                                 opj_packet_info_t *p_pack_info)
 506 {
 507         OPJ_BOOL l_read_data;
 508         OPJ_UINT32 l_nb_bytes_read = 0;
 509         OPJ_UINT32 l_nb_total_bytes_read = 0;
 510
 511         *p_data_read = 0;
 512
 513         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)) {
 514                 return OPJ_FALSE;
 515         }
 516
 517         p_src += l_nb_bytes_read;
 518         l_nb_total_bytes_read += l_nb_bytes_read;
 519         p_max_length -= l_nb_bytes_read;
 520
 521         /* we should read data for the packet */
 522         if (l_read_data) {
 523                 l_nb_bytes_read = 0;
 524
 525                 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info)) {
 526                         return OPJ_FALSE;
 527                 }
 528
 529                 l_nb_total_bytes_read += l_nb_bytes_read;
 530         }
 531
 532         *p_data_read = l_nb_total_bytes_read;
 533
 534         return OPJ_TRUE;
 535 }
 536
 537 OPJ_BOOL opj_t2_encode_packet(  OPJ_UINT32 tileno,
 538                                 opj_tcd_tile_t * tile,
 539                                 opj_tcp_t * tcp,
 540                                 opj_pi_iterator_t *pi,
 541                                 OPJ_BYTE *dest,
 542                                 OPJ_UINT32 * p_data_written,
 543                                 OPJ_UINT32 length,
 544                                 opj_codestream_info_t *cstr_info)
 545 {
 546         OPJ_UINT32 bandno, cblkno;
 547         OPJ_BYTE* c = dest;
 548         OPJ_UINT32 l_nb_bytes;
 549         OPJ_UINT32 compno = pi->compno;     /* component value */
 550         OPJ_UINT32 resno  = pi->resno;      /* resolution level value */
 551         OPJ_UINT32 precno = pi->precno;     /* precinct value */
 552         OPJ_UINT32 layno  = pi->layno;      /* quality layer value */
 553         OPJ_UINT32 l_nb_blocks;
 554         opj_tcd_band_t *band = 00;
 555         opj_tcd_cblk_enc_t* cblk = 00;
 556         opj_tcd_pass_t *pass = 00;
 557
 558         opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
 559         opj_tcd_resolution_t *res = &tilec->resolutions[resno];
 560
 561         opj_bio_t *bio = 00;    /* BIO component */
 562
 563         /* <SOP 0xff91> */
 564         if (tcp->csty & J2K_CP_CSTY_SOP) {
 565                 c[0] = 255;
 566                 c[1] = 145;
 567                 c[2] = 0;
 568                 c[3] = 4;
 569 #if 0
 570                 c[4] = (tile->packno % 65536) / 256;
 571                 c[5] = (tile->packno % 65536) % 256;
 572 #else
 573                 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
 574                 c[5] = tile->packno & 0xff;
 575 #endif
 576                 c += 6;
 577                 length -= 6;
 578         }
 579         /* </SOP> */
 580
 581         if (!layno) {
 582                 band = res->bands;
 583
 584                 for(bandno = 0; bandno < res->numbands; ++bandno) {
 585                         opj_tcd_precinct_t *prc = &band->precincts[precno];
 586
 587                         opj_tgt_reset(prc->incltree);
 588                         opj_tgt_reset(prc->imsbtree);
 589
 590                         l_nb_blocks = prc->cw * prc->ch;
 591                         for     (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 592                                 cblk = &prc->cblks.enc[cblkno];
 593
 594                                 cblk->numpasses = 0;
 595                                 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
 596                         }
 597                         ++band;
 598                 }
 599         }
 600
 601         bio = opj_bio_create();
 602         opj_bio_init_enc(bio, c, length);
 603         opj_bio_write(bio, 1, 1);           /* Empty header bit */
 604
 605         /* Writing Packet header */
 606         band = res->bands;
 607         for (bandno = 0; bandno < res->numbands; ++bandno)      {
 608                 opj_tcd_precinct_t *prc = &band->precincts[precno];
 609
 610                 l_nb_blocks = prc->cw * prc->ch;
 611                 cblk = prc->cblks.enc;
 612
 613                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 614                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 615
 616                         if (!cblk->numpasses && layer->numpasses) {
 617                                 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
 618                         }
 619
 620                         ++cblk;
 621                 }
 622
 623                 cblk = prc->cblks.enc;
 624                 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
 625                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 626                         OPJ_UINT32 increment = 0;
 627                         OPJ_UINT32 nump = 0;
 628                         OPJ_UINT32 len = 0, passno;
 629                         OPJ_UINT32 l_nb_passes;
 630
 631                         /* cblk inclusion bits */
 632                         if (!cblk->numpasses) {
 633                                 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
 634                         } else {
 635                                 opj_bio_write(bio, layer->numpasses != 0, 1);
 636                         }
 637
 638                         /* if cblk not included, go to the next cblk  */
 639                         if (!layer->numpasses) {
 640                                 ++cblk;
 641                                 continue;
 642                         }
 643
 644                         /* if first instance of cblk --> zero bit-planes information */
 645                         if (!cblk->numpasses) {
 646                                 cblk->numlenbits = 3;
 647                                 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
 648                         }
 649
 650                         /* number of coding passes included */
 651                         opj_t2_putnumpasses(bio, layer->numpasses);
 652                         l_nb_passes = cblk->numpasses + layer->numpasses;
 653                         pass = cblk->passes +  cblk->numpasses;
 654
 655                         /* computation of the increase of the length indicator and insertion in the header     */
 656                         for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
 657                                 ++nump;
 658                                 len += pass->len;
 659
 660                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
 661                                   increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment, opj_int_floorlog2((OPJ_INT32)len) + 1
 662                                     - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
 663                                         len = 0;
 664                                         nump = 0;
 665                                 }
 666
 667                                 ++pass;
 668                         }
 669                         opj_t2_putcommacode(bio, (OPJ_INT32)increment);
 670
 671                         /* computation of the new Length indicator */
 672                         cblk->numlenbits += increment;
 673
 674                         pass = cblk->passes +  cblk->numpasses;
 675                         /* insertion of the codeword segment length */
 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                                         opj_bio_write(bio, (OPJ_UINT32)len, cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
 682                                         len = 0;
 683                                         nump = 0;
 684                                 }
 685                                 ++pass;
 686                         }
 687
 688                         ++cblk;
 689                 }
 690
 691                 ++band;
 692         }
 693
 694         if (!opj_bio_flush(bio)) {
 695                 opj_bio_destroy(bio);
 696                 return OPJ_FALSE;               /* modified to eliminate longjmp !! */
 697         }
 698
 699         l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
 700         c += l_nb_bytes;
 701         length -= l_nb_bytes;
 702
 703         opj_bio_destroy(bio);
 704
 705         /* <EPH 0xff92> */
 706         if (tcp->csty & J2K_CP_CSTY_EPH) {
 707                 c[0] = 255;
 708                 c[1] = 146;
 709                 c += 2;
 710                 length -= 2;
 711         }
 712         /* </EPH> */
 713
 714         /* << INDEX */
 715         /* End of packet header position. Currently only represents the distance to start of packet
 716            Will be updated later by incrementing with packet start value*/
 717         if(cstr_info && cstr_info->index_write) {
 718                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 719                 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
 720         }
 721         /* INDEX >> */
 722
 723         /* Writing the packet body */
 724         band = res->bands;
 725         for (bandno = 0; bandno < res->numbands; bandno++) {
 726                 opj_tcd_precinct_t *prc = &band->precincts[precno];
 727
 728                 l_nb_blocks = prc->cw * prc->ch;
 729                 cblk = prc->cblks.enc;
 730
 731                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
 732                         opj_tcd_layer_t *layer = &cblk->layers[layno];
 733
 734                         if (!layer->numpasses) {
 735                                 ++cblk;
 736                                 continue;
 737                         }
 738
 739                         if (layer->len > length) {
 740                                 return OPJ_FALSE;
 741                         }
 742
 743                         memcpy(c, layer->data, layer->len);
 744                         cblk->numpasses += layer->numpasses;
 745                         c += layer->len;
 746                         length -= layer->len;
 747
 748                         /* << INDEX */
 749                         if(cstr_info && cstr_info->index_write) {
 750                                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
 751                                 info_PK->disto += layer->disto;
 752                                 if (cstr_info->D_max < info_PK->disto) {
 753                                         cstr_info->D_max = info_PK->disto;
 754                                 }
 755                         }
 756
 757                         ++cblk;
 758                         /* INDEX >> */
 759                 }
 760                 ++band;
 761         }
 762
 763         assert( c >= dest );
 764         * p_data_written += (OPJ_UINT32)(c - dest);
 765
 766         return OPJ_TRUE;
 767 }
 768
 769 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
 770                                     opj_tcd_tile_t *p_tile,
 771                                     opj_tcp_t *p_tcp,
 772                                     opj_pi_iterator_t *p_pi,
 773                                     OPJ_BYTE *p_src,
 774                                     OPJ_UINT32 * p_data_read,
 775                                     OPJ_UINT32 p_max_length,
 776                                     opj_packet_info_t *p_pack_info)
 777 {
 778         OPJ_BOOL l_read_data;
 779         OPJ_UINT32 l_nb_bytes_read = 0;
 780         OPJ_UINT32 l_nb_total_bytes_read = 0;
 781
 782         *p_data_read = 0;
 783
 784         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)) {
 785                 return OPJ_FALSE;
 786         }
 787
 788         p_src += l_nb_bytes_read;
 789         l_nb_total_bytes_read += l_nb_bytes_read;
 790         p_max_length -= l_nb_bytes_read;
 791
 792         /* we should read data for the packet */
 793         if (l_read_data) {
 794                 l_nb_bytes_read = 0;
 795
 796                 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info)) {
 797                         return OPJ_FALSE;
 798                 }
 799
 800                 l_nb_total_bytes_read += l_nb_bytes_read;
 801         }
 802         *p_data_read = l_nb_total_bytes_read;
 803
 804         return OPJ_TRUE;
 805 }
 806
 807
 808 OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
 809                                     opj_tcd_tile_t *p_tile,
 810                                     opj_tcp_t *p_tcp,
 811                                     opj_pi_iterator_t *p_pi,
 812                                     OPJ_BOOL * p_is_data_present,
 813                                     OPJ_BYTE *p_src_data,
 814                                     OPJ_UINT32 * p_data_read,
 815                                     OPJ_UINT32 p_max_length,
 816                                     opj_packet_info_t *p_pack_info)
 817
 818 {
 819         /* loop */
 820         OPJ_UINT32 bandno, cblkno;
 821         OPJ_UINT32 l_nb_code_blocks;
 822         OPJ_UINT32 l_remaining_length;
 823         OPJ_UINT32 l_header_length;
 824         OPJ_UINT32 * l_modified_length_ptr = 00;
 825         OPJ_BYTE *l_current_data = p_src_data;
 826         opj_cp_t *l_cp = p_t2->cp;
 827         opj_bio_t *l_bio = 00;  /* BIO component */
 828         opj_tcd_band_t *l_band = 00;
 829         opj_tcd_cblk_dec_t* l_cblk = 00;
 830         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
 831
 832         OPJ_BYTE *l_header_data = 00;
 833         OPJ_BYTE **l_header_data_start = 00;
 834
 835         OPJ_UINT32 l_present;
 836
 837         if (p_pi->layno == 0) {
 838                 l_band = l_res->bands;
 839
 840                 /* reset tagtrees */
 841                 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
 842                         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
 843
 844                         if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
 845                                 opj_tgt_reset(l_prc->incltree);
 846                                 opj_tgt_reset(l_prc->imsbtree);
 847                                 l_cblk = l_prc->cblks.dec;
 848
 849                                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
 850                                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
 851                                         l_cblk->numsegs = 0;
 852                                         l_cblk->real_num_segs = 0;
 853                                         ++l_cblk;
 854                                 }
 855                         }
 856
 857                         ++l_band;
 858                 }
 859         }
 860
 861         /* SOP markers */
 862
 863         if (p_tcp->csty & J2K_CP_CSTY_SOP) {
 864                 if (p_max_length < 6) {
 865                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Not enough space for expected SOP marker\n"); */
 866                         printf("Not enough space for expected SOP marker\n");
 867                 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
 868                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Expected SOP marker\n"); */
 869                         printf("Expected SOP marker\n");
 870                         fprintf(stderr, "Error : expected SOP marker\n");
 871                 } else {
 872                         l_current_data += 6;
 873                 }
 874
 875                 /** TODO : check the Nsop value */
 876         }
 877
 878         /*
 879         When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
 880         This part deal with this caracteristic
 881         step 1: Read packet header in the saved structure
 882         step 2: Return to codestream for decoding
 883         */
 884
 885         l_bio = opj_bio_create();
 886         if (! l_bio) {
 887                 return OPJ_FALSE;
 888         }
 889
 890         if (l_cp->ppm == 1) { /* PPM */
 891                 l_header_data_start = &l_cp->ppm_data;
 892                 l_header_data = *l_header_data_start;
 893                 l_modified_length_ptr = &(l_cp->ppm_len);
 894
 895         }
 896         else if (p_tcp->ppt == 1) { /* PPT */
 897                 l_header_data_start = &(p_tcp->ppt_data);
 898                 l_header_data = *l_header_data_start;
 899                 l_modified_length_ptr = &(p_tcp->ppt_len);
 900         }
 901         else {  /* Normal Case */
 902                 l_header_data_start = &(l_current_data);
 903                 l_header_data = *l_header_data_start;
 904                 l_remaining_length = (OPJ_UINT32)(p_src_data+p_max_length-l_header_data);
 905                 l_modified_length_ptr = &(l_remaining_length);
 906         }
 907
 908         opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
 909
 910         l_present = opj_bio_read(l_bio, 1);
 911         JAS_FPRINTF(stderr, "present=%d \n", l_present );
 912         if (!l_present) {
 913             /* TODO MSD: no test to control the output of this function*/
 914                 opj_bio_inalign(l_bio);
 915                 l_header_data += opj_bio_numbytes(l_bio);
 916                 opj_bio_destroy(l_bio);
 917
 918                 /* EPH markers */
 919                 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
 920                         if (p_max_length < 2) {
 921                                 fprintf(stderr, "Not enough space for expected EPH marker\n");
 922                         } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
 923                                 fprintf(stderr, "Error : expected EPH marker\n");
 924                         } else {
 925                                 l_header_data += 2;
 926                         }
 927                 }
 928
 929                 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
 930                 *l_modified_length_ptr -= l_header_length;
 931                 *l_header_data_start += l_header_length;
 932
 933                 /* << INDEX */
 934                 /* End of packet header position. Currently only represents the distance to start of packet
 935                    Will be updated later by incrementing with packet start value */
 936                 if (p_pack_info) {
 937                         p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
 938                 }
 939                 /* INDEX >> */
 940
 941                 * p_is_data_present = OPJ_FALSE;
 942                 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
 943                 return OPJ_TRUE;
 944         }
 945
 946         l_band = l_res->bands;
 947         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
 948                 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
 949
 950                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
 951                         ++l_band;
 952                         continue;
 953                 }
 954
 955                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
 956                 l_cblk = l_prc->cblks.dec;
 957                 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
 958                         OPJ_UINT32 l_included,l_increment, l_segno;
 959                         OPJ_INT32 n;
 960
 961                         /* if cblk not yet included before --> inclusion tagtree */
 962                         if (!l_cblk->numsegs) {
 963                                 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, (OPJ_INT32)(p_pi->layno + 1));
 964                                 /* else one bit */
 965                         }
 966                         else {
 967                                 l_included = opj_bio_read(l_bio, 1);
 968                         }
 969
 970                         /* if cblk not included */
 971                         if (!l_included) {
 972                                 l_cblk->numnewpasses = 0;
 973                                 ++l_cblk;
 974         JAS_FPRINTF(stderr, "included=%d \n", l_included);
 975                                 continue;
 976                         }
 977
 978                         /* if cblk not yet included --> zero-bitplane tagtree */
 979                         if (!l_cblk->numsegs) {
 980                                 OPJ_UINT32 i = 0;
 981
 982                                 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
 983                                         ++i;
 984                                 }
 985
 986                                 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
 987                                 l_cblk->numlenbits = 3;
 988                         }
 989
 990                         /* number of coding passes */
 991                         l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
 992                         l_increment = opj_t2_getcommacode(l_bio);
 993
 994                         /* length indicator increment */
 995                         l_cblk->numlenbits += l_increment;
 996                         l_segno = 0;
 997
 998                         if (!l_cblk->numsegs) {
 999                                 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1000                                         opj_bio_destroy(l_bio);
1001                                         return OPJ_FALSE;
1002                                 }
1003                         }
1004                         else {
1005                                 l_segno = l_cblk->numsegs - 1;
1006                                 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1007                                         ++l_segno;
1008                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1009                                                 opj_bio_destroy(l_bio);
1010                                                 return OPJ_FALSE;
1011                                         }
1012                                 }
1013                         }
1014                         n = (OPJ_INT32)l_cblk->numnewpasses;
1015
1016                         do {
1017                                 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);
1018                                 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
1019                                         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 );
1020
1021                                 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1022                                 if (n > 0) {
1023                                         ++l_segno;
1024
1025                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1026                                                 opj_bio_destroy(l_bio);
1027                                                 return OPJ_FALSE;
1028                                         }
1029                                 }
1030                         } while (n > 0);
1031
1032                         ++l_cblk;
1033                 }
1034
1035                 ++l_band;
1036         }
1037
1038         if (!opj_bio_inalign(l_bio)) {
1039                 opj_bio_destroy(l_bio);
1040                 return OPJ_FALSE;
1041         }
1042
1043         l_header_data += opj_bio_numbytes(l_bio);
1044         opj_bio_destroy(l_bio);
1045
1046         /* EPH markers */
1047         if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1048                 if (p_max_length < 2) {
1049                         fprintf(stderr, "Not enough space for expected EPH marker\n");
1050                 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1051                         /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n"); */
1052                         fprintf(stderr, "Error : expected EPH marker\n");
1053                 } else {
1054                         l_header_data += 2;
1055                 }
1056         }
1057
1058         l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1059         JAS_FPRINTF( stderr, "hdrlen=%d \n", l_header_length );
1060         JAS_FPRINTF( stderr, "packet body\n");
1061         *l_modified_length_ptr -= l_header_length;
1062         *l_header_data_start += l_header_length;
1063
1064         /* << INDEX */
1065         /* End of packet header position. Currently only represents the distance to start of packet
1066          Will be updated later by incrementing with packet start value */
1067         if (p_pack_info) {
1068                 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1069         }
1070         /* INDEX >> */
1071
1072         *p_is_data_present = OPJ_TRUE;
1073         *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1074
1075         return OPJ_TRUE;
1076 }
1077
1078 OPJ_BOOL opj_t2_read_packet_data(   opj_t2_t* p_t2,
1079                                     opj_tcd_tile_t *p_tile,
1080                                     opj_pi_iterator_t *p_pi,
1081                                     OPJ_BYTE *p_src_data,
1082                                     OPJ_UINT32 * p_data_read,
1083                                     OPJ_UINT32 p_max_length,
1084                                     opj_packet_info_t *pack_info)
1085 {
1086         OPJ_UINT32 bandno, cblkno;
1087         OPJ_UINT32 l_nb_code_blocks;
1088         OPJ_BYTE *l_current_data = p_src_data;
1089         opj_tcd_band_t *l_band = 00;
1090         opj_tcd_cblk_dec_t* l_cblk = 00;
1091         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1092
1093         OPJ_ARG_NOT_USED(p_t2);
1094         OPJ_ARG_NOT_USED(pack_info);
1095
1096         l_band = l_res->bands;
1097         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1098                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1099
1100                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1101                         ++l_band;
1102                         continue;
1103                 }
1104
1105                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1106                 l_cblk = l_prc->cblks.dec;
1107
1108                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1109                         opj_tcd_seg_t *l_seg = 00;
1110
1111                         if (!l_cblk->numnewpasses) {
1112                                 /* nothing to do */
1113                                 ++l_cblk;
1114                                 continue;
1115                         }
1116
1117                         if (!l_cblk->numsegs) {
1118                                 l_seg = l_cblk->segs;
1119                                 ++l_cblk->numsegs;
1120                                 l_cblk->data_current_size = 0;
1121                         }
1122                         else {
1123                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1124
1125                                 if (l_seg->numpasses == l_seg->maxpasses) {
1126                                         ++l_seg;
1127                                         ++l_cblk->numsegs;
1128                                 }
1129                         }
1130
1131                         do {
1132                                 if (l_current_data + l_seg->newlen > p_src_data + p_max_length) {
1133                                         fprintf(stderr, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1134                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1135                                         return OPJ_FALSE;
1136                                 }
1137
1138 #ifdef USE_JPWL
1139                         /* we need here a j2k handle to verify if making a check to
1140                         the validity of cblocks parameters is selected from user (-W) */
1141
1142                                 /* let's check that we are not exceeding */
1143                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1144                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1145                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1146                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1147                                         if (!JPWL_ASSUME) {
1148                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1149                                                 return OPJ_FALSE;
1150                                         }
1151                                         l_seg->newlen = 8192 - l_cblk->len;
1152                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1153                                         break;
1154                                 };
1155
1156 #endif /* USE_JPWL */
1157                                 /* Check if the cblk->data have allocated enough memory */
1158                                 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1159                                     OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1160                                     if(! new_cblk_data) {
1161                                         opj_free(l_cblk->data);
1162                                         l_cblk->data_max_size = 0;
1163                                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1164                                         return OPJ_FALSE;
1165                                     }
1166                                     l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1167                                     l_cblk->data = new_cblk_data;
1168                                 }
1169
1170                                 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1171
1172                                 if (l_seg->numpasses == 0) {
1173                                         l_seg->data = &l_cblk->data;
1174                                         l_seg->dataindex = l_cblk->data_current_size;
1175                                 }
1176
1177                                 l_current_data += l_seg->newlen;
1178                                 l_seg->numpasses += l_seg->numnewpasses;
1179                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1180
1181                                 l_seg->real_num_passes = l_seg->numpasses;
1182                                 l_cblk->data_current_size += l_seg->newlen;
1183                                 l_seg->len += l_seg->newlen;
1184
1185                                 if (l_cblk->numnewpasses > 0) {
1186                                         ++l_seg;
1187                                         ++l_cblk->numsegs;
1188                                 }
1189                         } while (l_cblk->numnewpasses > 0);
1190
1191                         l_cblk->real_num_segs = l_cblk->numsegs;
1192                         ++l_cblk;
1193                 } /* next code_block */
1194
1195                 ++l_band;
1196         }
1197
1198         *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1199
1200         return OPJ_TRUE;
1201 }
1202
1203 OPJ_BOOL opj_t2_skip_packet_data(   opj_t2_t* p_t2,
1204                                     opj_tcd_tile_t *p_tile,
1205                                     opj_pi_iterator_t *p_pi,
1206                                     OPJ_UINT32 * p_data_read,
1207                                     OPJ_UINT32 p_max_length,
1208                                     opj_packet_info_t *pack_info)
1209 {
1210         OPJ_UINT32 bandno, cblkno;
1211         OPJ_UINT32 l_nb_code_blocks;
1212         opj_tcd_band_t *l_band = 00;
1213         opj_tcd_cblk_dec_t* l_cblk = 00;
1214         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1215
1216         OPJ_ARG_NOT_USED(p_t2);
1217         OPJ_ARG_NOT_USED(pack_info);
1218
1219         *p_data_read = 0;
1220         l_band = l_res->bands;
1221
1222         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1223                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1224
1225                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1226                         ++l_band;
1227                         continue;
1228                 }
1229
1230                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1231                 l_cblk = l_prc->cblks.dec;
1232
1233                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1234                         opj_tcd_seg_t *l_seg = 00;
1235
1236                         if (!l_cblk->numnewpasses) {
1237                                 /* nothing to do */
1238                                 ++l_cblk;
1239                                 continue;
1240                         }
1241
1242                         if (!l_cblk->numsegs) {
1243                                 l_seg = l_cblk->segs;
1244                                 ++l_cblk->numsegs;
1245                                 l_cblk->data_current_size = 0;
1246                         }
1247                         else {
1248                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1249
1250                                 if (l_seg->numpasses == l_seg->maxpasses) {
1251                                         ++l_seg;
1252                                         ++l_cblk->numsegs;
1253                                 }
1254                         }
1255
1256                         do {
1257                                 if (* p_data_read + l_seg->newlen > p_max_length) {
1258                                         fprintf(stderr, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1259                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1260                                         return OPJ_FALSE;
1261                                 }
1262
1263 #ifdef USE_JPWL
1264                         /* we need here a j2k handle to verify if making a check to
1265                         the validity of cblocks parameters is selected from user (-W) */
1266
1267                                 /* let's check that we are not exceeding */
1268                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1269                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1270                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1271                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1272                                         if (!JPWL_ASSUME) {
1273                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1274                                                 return -999;
1275                                         }
1276                                         l_seg->newlen = 8192 - l_cblk->len;
1277                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1278                                         break;
1279                                 };
1280
1281 #endif /* USE_JPWL */
1282                                         JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read, l_seg->newlen );
1283                                 *(p_data_read) += l_seg->newlen;
1284
1285                                 l_seg->numpasses += l_seg->numnewpasses;
1286                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1287                                 if (l_cblk->numnewpasses > 0)
1288                                 {
1289                                         ++l_seg;
1290                                         ++l_cblk->numsegs;
1291                                 }
1292                         } while (l_cblk->numnewpasses > 0);
1293
1294                         ++l_cblk;
1295                 }
1296
1297                 ++l_band;
1298         }
1299
1300         return OPJ_TRUE;
1301 }
1302
1303
1304 OPJ_BOOL opj_t2_init_seg(   opj_tcd_cblk_dec_t* cblk,
1305                             OPJ_UINT32 index,
1306                             OPJ_UINT32 cblksty,
1307                             OPJ_UINT32 first)
1308 {
1309         opj_tcd_seg_t* seg = 00;
1310         OPJ_UINT32 l_nb_segs = index + 1;
1311
1312         if (l_nb_segs > cblk->m_current_max_segs) {
1313                 opj_tcd_seg_t* new_segs;
1314                 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1315
1316                 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1317                 if(! new_segs) {
1318                         opj_free(cblk->segs);
1319                         cblk->segs = NULL;
1320                         cblk->m_current_max_segs = 0;
1321                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1322                         return OPJ_FALSE;
1323                 }
1324                 cblk->segs = new_segs;
1325         }
1326
1327         seg = &cblk->segs[index];
1328         memset(seg,0,sizeof(opj_tcd_seg_t));
1329
1330         if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1331                 seg->maxpasses = 1;
1332         }
1333         else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1334                 if (first) {
1335                         seg->maxpasses = 10;
1336                 } else {
1337                         seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1338                 }
1339         } else {
1340                 seg->maxpasses = 109;
1341         }
1342
1343         return OPJ_TRUE;
1344 }