git.sesse.net Git - vlc/blob - modules/demux/mkv/matroska_segment.cpp

   1 /*****************************************************************************
   2  * mkv.cpp : matroska demuxer
   3  *****************************************************************************
   4  * Copyright (C) 2003-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Steve Lhomme <steve.lhomme@free.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #include "matroska_segment.hpp"
  26
  27 #include "chapters.hpp"
  28
  29 #include "demux.hpp"
  30
  31 extern "C" {
  32 #include "../vobsub.h"
  33 }
  34
  35 /* GetFourCC helper */
  36 #define GetFOURCC( p )  __GetFOURCC( (uint8_t*)p )
  37 static vlc_fourcc_t __GetFOURCC( uint8_t *p )
  38 {
  39     return VLC_FOURCC( p[0], p[1], p[2], p[3] );
  40 }
  41
  42 /* Destructor */
  43 matroska_segment_c::~matroska_segment_c()
  44 {
  45     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
  46     {
  47         delete tracks[i_track]->p_compression_data;
  48         es_format_Clean( &tracks[i_track]->fmt );
  49         free( tracks[i_track]->p_extra_data );
  50         free( tracks[i_track]->psz_codec );
  51         delete tracks[i_track];
  52     }
  53
  54     free( psz_writing_application );
  55     free( psz_muxing_application );
  56     free( psz_segment_filename );
  57     free( psz_title );
  58     free( psz_date_utc );
  59     free( p_indexes );
  60
  61     delete ep;
  62     delete segment;
  63     delete p_segment_uid;
  64     delete p_prev_segment_uid;
  65     delete p_next_segment_uid;
  66
  67     std::vector<chapter_edition_c*>::iterator index = stored_editions.begin();
  68     while ( index != stored_editions.end() )
  69     {
  70         delete (*index);
  71         index++;
  72     }
  73     std::vector<chapter_translation_c*>::iterator indext = translations.begin();
  74     while ( indext != translations.end() )
  75     {
  76         delete (*indext);
  77         indext++;
  78     }
  79     std::vector<KaxSegmentFamily*>::iterator indexf = families.begin();
  80     while ( indexf != families.end() )
  81     {
  82         delete (*indexf);
  83         indexf++;
  84    }
  85 }
  86
  87
  88 /*****************************************************************************
  89  * Tools
  90  *  * LoadCues : load the cues element and update index
  91  *
  92  *  * LoadTags : load ... the tags element
  93  *
  94  *  * InformationCreate : create all information, load tags if present
  95  *
  96  *****************************************************************************/
  97 void matroska_segment_c::LoadCues( KaxCues *cues )
  98 {
  99     EbmlParser  *ep;
 100     EbmlElement *el;
 101
 102     if( b_cues )
 103     {
 104         msg_Err( &sys.demuxer, "There can be only 1 Cues per section." );
 105         return;
 106     }
 107
 108     ep = new EbmlParser( &es, cues, &sys.demuxer );
 109     while( ( el = ep->Get() ) != NULL )
 110     {
 111         if( MKV_IS_ID( el, KaxCuePoint ) )
 112         {
 113 #define idx p_indexes[i_index]
 114
 115             idx.i_track       = -1;
 116             idx.i_block_number= -1;
 117             idx.i_position    = -1;
 118             idx.i_time        = 0;
 119             idx.b_key         = true;
 120
 121             ep->Down();
 122             while( ( el = ep->Get() ) != NULL )
 123             {
 124                 if( MKV_IS_ID( el, KaxCueTime ) )
 125                 {
 126                     KaxCueTime &ctime = *(KaxCueTime*)el;
 127
 128                     ctime.ReadData( es.I_O() );
 129
 130                     idx.i_time = uint64( ctime ) * i_timescale / (mtime_t)1000;
 131                 }
 132                 else if( MKV_IS_ID( el, KaxCueTrackPositions ) )
 133                 {
 134                     ep->Down();
 135                     while( ( el = ep->Get() ) != NULL )
 136                     {
 137                         if( MKV_IS_ID( el, KaxCueTrack ) )
 138                         {
 139                             KaxCueTrack &ctrack = *(KaxCueTrack*)el;
 140
 141                             ctrack.ReadData( es.I_O() );
 142                             idx.i_track = uint16( ctrack );
 143                         }
 144                         else if( MKV_IS_ID( el, KaxCueClusterPosition ) )
 145                         {
 146                             KaxCueClusterPosition &ccpos = *(KaxCueClusterPosition*)el;
 147
 148                             ccpos.ReadData( es.I_O() );
 149                             idx.i_position = segment->GetGlobalPosition( uint64( ccpos ) );
 150                         }
 151                         else if( MKV_IS_ID( el, KaxCueBlockNumber ) )
 152                         {
 153                             KaxCueBlockNumber &cbnum = *(KaxCueBlockNumber*)el;
 154
 155                             cbnum.ReadData( es.I_O() );
 156                             idx.i_block_number = uint32( cbnum );
 157                         }
 158                         else
 159                         {
 160                             msg_Dbg( &sys.demuxer, "         * Unknown (%s)", typeid(*el).name() );
 161                         }
 162                     }
 163                     ep->Up();
 164                 }
 165                 else
 166                 {
 167                     msg_Dbg( &sys.demuxer, "     * Unknown (%s)", typeid(*el).name() );
 168                 }
 169             }
 170             ep->Up();
 171
 172 #if 0
 173             msg_Dbg( &sys.demuxer, " * added time=%"PRId64" pos=%"PRId64
 174                      " track=%d bnum=%d", idx.i_time, idx.i_position,
 175                      idx.i_track, idx.i_block_number );
 176 #endif
 177
 178             i_index++;
 179             if( i_index >= i_index_max )
 180             {
 181                 i_index_max += 1024;
 182                 p_indexes = (mkv_index_t*)xrealloc( p_indexes,
 183                                         sizeof( mkv_index_t ) * i_index_max );
 184             }
 185 #undef idx
 186         }
 187         else
 188         {
 189             msg_Dbg( &sys.demuxer, " * Unknown (%s)", typeid(*el).name() );
 190         }
 191     }
 192     delete ep;
 193     b_cues = true;
 194     msg_Dbg( &sys.demuxer, "|   - loading cues done." );
 195 }
 196
 197 void matroska_segment_c::LoadTags( KaxTags *tags )
 198 {
 199     EbmlParser  *ep;
 200     EbmlElement *el;
 201
 202     /* Master elements */
 203     ep = new EbmlParser( &es, tags, &sys.demuxer );
 204
 205     while( ( el = ep->Get() ) != NULL )
 206     {
 207         if( MKV_IS_ID( el, KaxTag ) )
 208         {
 209             msg_Dbg( &sys.demuxer, "+ Tag" );
 210             ep->Down();
 211             while( ( el = ep->Get() ) != NULL )
 212             {
 213                 if( MKV_IS_ID( el, KaxTagTargets ) )
 214                 {
 215                     msg_Dbg( &sys.demuxer, "|   + Targets" );
 216                     ep->Down();
 217                     while( ( el = ep->Get() ) != NULL )
 218                     {
 219                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 220                     }
 221                     ep->Up();
 222                 }
 223                 else if( MKV_IS_ID( el, KaxTagGeneral ) )
 224                 {
 225                     msg_Dbg( &sys.demuxer, "|   + General" );
 226                     ep->Down();
 227                     while( ( el = ep->Get() ) != NULL )
 228                     {
 229                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 230                     }
 231                     ep->Up();
 232                 }
 233                 else if( MKV_IS_ID( el, KaxTagGenres ) )
 234                 {
 235                     msg_Dbg( &sys.demuxer, "|   + Genres" );
 236                     ep->Down();
 237                     while( ( el = ep->Get() ) != NULL )
 238                     {
 239                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 240                     }
 241                     ep->Up();
 242                 }
 243                 else if( MKV_IS_ID( el, KaxTagAudioSpecific ) )
 244                 {
 245                     msg_Dbg( &sys.demuxer, "|   + Audio Specific" );
 246                     ep->Down();
 247                     while( ( el = ep->Get() ) != NULL )
 248                     {
 249                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 250                     }
 251                     ep->Up();
 252                 }
 253                 else if( MKV_IS_ID( el, KaxTagImageSpecific ) )
 254                 {
 255                     msg_Dbg( &sys.demuxer, "|   + Images Specific" );
 256                     ep->Down();
 257                     while( ( el = ep->Get() ) != NULL )
 258                     {
 259                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 260                     }
 261                     ep->Up();
 262                 }
 263                 else if( MKV_IS_ID( el, KaxTagMultiComment ) )
 264                 {
 265                     msg_Dbg( &sys.demuxer, "|   + Multi Comment" );
 266                 }
 267                 else if( MKV_IS_ID( el, KaxTagMultiCommercial ) )
 268                 {
 269                     msg_Dbg( &sys.demuxer, "|   + Multi Commercial" );
 270                 }
 271                 else if( MKV_IS_ID( el, KaxTagMultiDate ) )
 272                 {
 273                     msg_Dbg( &sys.demuxer, "|   + Multi Date" );
 274                 }
 275                 else if( MKV_IS_ID( el, KaxTagMultiEntity ) )
 276                 {
 277                     msg_Dbg( &sys.demuxer, "|   + Multi Entity" );
 278                 }
 279                 else if( MKV_IS_ID( el, KaxTagMultiIdentifier ) )
 280                 {
 281                     msg_Dbg( &sys.demuxer, "|   + Multi Identifier" );
 282                 }
 283                 else if( MKV_IS_ID( el, KaxTagMultiLegal ) )
 284                 {
 285                     msg_Dbg( &sys.demuxer, "|   + Multi Legal" );
 286                 }
 287                 else if( MKV_IS_ID( el, KaxTagMultiTitle ) )
 288                 {
 289                     msg_Dbg( &sys.demuxer, "|   + Multi Title" );
 290                 }
 291                 else
 292                 {
 293                     msg_Dbg( &sys.demuxer, "|   + LoadTag Unknown (%s)", typeid( *el ).name() );
 294                 }
 295             }
 296             ep->Up();
 297         }
 298         else
 299         {
 300             msg_Dbg( &sys.demuxer, "+ Unknown (%s)", typeid( *el ).name() );
 301         }
 302     }
 303     delete ep;
 304
 305     msg_Dbg( &sys.demuxer, "loading tags done." );
 306 }
 307
 308 /*****************************************************************************
 309  * InformationCreate:
 310  *****************************************************************************/
 311 void matroska_segment_c::InformationCreate( )
 312 {
 313     sys.meta = vlc_meta_New();
 314
 315     if( psz_title )
 316     {
 317         vlc_meta_SetTitle( sys.meta, psz_title );
 318     }
 319     if( psz_date_utc )
 320     {
 321         vlc_meta_SetDate( sys.meta, psz_date_utc );
 322     }
 323 #if 0
 324     if( psz_segment_filename )
 325     {
 326         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 327     }
 328     if( psz_muxing_application )
 329     {
 330         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 331     }
 332     if( psz_writing_application )
 333     {
 334         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 335     }
 336
 337     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
 338     {
 339 //        mkv_track_t *tk = tracks[i_track];
 340 //        vlc_meta_t *mtk = vlc_meta_New();
 341         fprintf( stderr, "***** WARNING: Unhandled child meta\n");
 342     }
 343 #endif
 344 #if 0
 345     if( i_tags_position >= 0 )
 346     {
 347         bool b_seekable;
 348
 349         stream_Control( sys.demuxer.s, STREAM_CAN_FASTSEEK, &b_seekable );
 350         if( b_seekable )
 351         {
 352             LoadTags( );
 353         }
 354     }
 355 #endif
 356 }
 357
 358
 359 /*****************************************************************************
 360  * Misc
 361  *****************************************************************************/
 362
 363 void matroska_segment_c::IndexAppendCluster( KaxCluster *cluster )
 364 {
 365 #define idx p_indexes[i_index]
 366     idx.i_track       = -1;
 367     idx.i_block_number= -1;
 368     idx.i_position    = cluster->GetElementPosition();
 369     idx.i_time        = -1;
 370     idx.b_key         = true;
 371
 372     i_index++;
 373     if( i_index >= i_index_max )
 374     {
 375         i_index_max += 1024;
 376         p_indexes = (mkv_index_t*)xrealloc( p_indexes,
 377                                         sizeof( mkv_index_t ) * i_index_max );
 378     }
 379 #undef idx
 380 }
 381
 382
 383 bool matroska_segment_c::PreloadFamily( const matroska_segment_c & of_segment )
 384 {
 385     if ( b_preloaded )
 386         return false;
 387
 388     for (size_t i=0; i<families.size(); i++)
 389     {
 390         for (size_t j=0; j<of_segment.families.size(); j++)
 391         {
 392             if ( *(families[i]) == *(of_segment.families[j]) )
 393                 return Preload( );
 394         }
 395     }
 396
 397     return false;
 398 }
 399
 400 bool matroska_segment_c::CompareSegmentUIDs( const matroska_segment_c * p_item_a, const matroska_segment_c * p_item_b )
 401 {
 402     EbmlBinary *p_tmp;
 403
 404     if ( p_item_a == NULL || p_item_b == NULL )
 405         return false;
 406
 407     p_tmp = (EbmlBinary *)p_item_a->p_segment_uid;
 408     if ( p_item_b->p_prev_segment_uid != NULL
 409           && *p_tmp == *p_item_b->p_prev_segment_uid )
 410         return true;
 411
 412     p_tmp = (EbmlBinary *)p_item_a->p_next_segment_uid;
 413     if ( !p_tmp )
 414         return false;
 415
 416     if ( p_item_b->p_segment_uid != NULL
 417           && *p_tmp == *p_item_b->p_segment_uid )
 418         return true;
 419
 420     if ( p_item_b->p_prev_segment_uid != NULL
 421           && *p_tmp == *p_item_b->p_prev_segment_uid )
 422         return true;
 423
 424     return false;
 425 }
 426
 427 bool matroska_segment_c::Preload( )
 428 {
 429     if ( b_preloaded )
 430         return false;
 431
 432     EbmlElement *el = NULL;
 433
 434     ep->Reset( &sys.demuxer );
 435
 436     while( ( el = ep->Get() ) != NULL )
 437     {
 438         if( MKV_IS_ID( el, KaxSeekHead ) )
 439         {
 440             /* Multiple allowed */
 441             /* We bail at 10, to prevent possible recursion */
 442             msg_Dbg(  &sys.demuxer, "|   + Seek head" );
 443             if( i_seekhead_count < 10 )
 444             {
 445                 i_seekhead_position = (int64_t) es.I_O().getFilePointer();
 446                 ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 447             }
 448         }
 449         else if( MKV_IS_ID( el, KaxInfo ) )
 450         {
 451             /* Multiple allowed, mandatory */
 452             msg_Dbg(  &sys.demuxer, "|   + Information" );
 453             if( i_info_position < 0 ) // FIXME
 454                 ParseInfo( static_cast<KaxInfo*>( el ) );
 455             i_info_position = (int64_t) es.I_O().getFilePointer();
 456         }
 457         else if( MKV_IS_ID( el, KaxTracks ) )
 458         {
 459             /* Multiple allowed */
 460             msg_Dbg(  &sys.demuxer, "|   + Tracks" );
 461             if( i_tracks_position < 0 ) // FIXME
 462                 ParseTracks( static_cast<KaxTracks*>( el ) );
 463             if ( tracks.size() == 0 )
 464             {
 465                 msg_Err( &sys.demuxer, "No tracks supported" );
 466                 return false;
 467             }
 468             i_tracks_position = (int64_t) es.I_O().getFilePointer();
 469         }
 470         else if( MKV_IS_ID( el, KaxCues ) )
 471         {
 472             msg_Dbg(  &sys.demuxer, "|   + Cues" );
 473             if( i_cues_position < 0 )
 474                 LoadCues( static_cast<KaxCues*>( el ) );
 475             i_cues_position = (int64_t) es.I_O().getFilePointer();
 476         }
 477         else if( MKV_IS_ID( el, KaxCluster ) )
 478         {
 479             msg_Dbg( &sys.demuxer, "|   + Cluster" );
 480
 481             cluster = (KaxCluster*)el;
 482
 483             i_cluster_pos = i_start_pos = cluster->GetElementPosition();
 484             ParseCluster( );
 485
 486             ep->Down();
 487             /* stop pre-parsing the stream */
 488             break;
 489         }
 490         else if( MKV_IS_ID( el, KaxAttachments ) )
 491         {
 492             msg_Dbg( &sys.demuxer, "|   + Attachments" );
 493             if( i_attachments_position < 0 )
 494                 ParseAttachments( static_cast<KaxAttachments*>( el ) );
 495             i_attachments_position = (int64_t) es.I_O().getFilePointer();
 496         }
 497         else if( MKV_IS_ID( el, KaxChapters ) )
 498         {
 499             msg_Dbg( &sys.demuxer, "|   + Chapters" );
 500             if( i_chapters_position < 0 )
 501                 ParseChapters( static_cast<KaxChapters*>( el ) );
 502             i_chapters_position = (int64_t) es.I_O().getFilePointer();
 503         }
 504         else if( MKV_IS_ID( el, KaxTag ) )
 505         {
 506             msg_Dbg( &sys.demuxer, "|   + Tags" );
 507             if( i_tags_position < 0) // FIXME
 508                 ;//LoadTags( static_cast<KaxTags*>( el ) );
 509             i_tags_position = (int64_t) es.I_O().getFilePointer();
 510         }
 511         else
 512             msg_Dbg( &sys.demuxer, "|   + Preload Unknown (%s)", typeid(*el).name() );
 513     }
 514
 515     b_preloaded = true;
 516
 517     return true;
 518 }
 519
 520 /* Here we try to load elements that were found in Seek Heads, but not yet parsed */
 521 bool matroska_segment_c::LoadSeekHeadItem( const EbmlCallbacks & ClassInfos, int64_t i_element_position )
 522 {
 523     int64_t     i_sav_position = (int64_t)es.I_O().getFilePointer();
 524     EbmlElement *el;
 525
 526     es.I_O().setFilePointer( i_element_position, seek_beginning );
 527     el = es.FindNextID( ClassInfos, 0xFFFFFFFFL);
 528
 529     if( el == NULL )
 530     {
 531         msg_Err( &sys.demuxer, "cannot load some cues/chapters/tags etc. (broken seekhead or file)" );
 532         es.I_O().setFilePointer( i_sav_position, seek_beginning );
 533         return false;
 534     }
 535
 536     if( MKV_IS_ID( el, KaxSeekHead ) )
 537     {
 538         /* Multiple allowed */
 539         msg_Dbg( &sys.demuxer, "|   + Seek head" );
 540         if( i_seekhead_count < 10 )
 541         {
 542             i_seekhead_position = i_element_position;
 543             ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 544         }
 545     }
 546     else if( MKV_IS_ID( el, KaxInfo ) ) // FIXME
 547     {
 548         /* Multiple allowed, mandatory */
 549         msg_Dbg( &sys.demuxer, "|   + Information" );
 550         if( i_info_position < 0 )
 551             ParseInfo( static_cast<KaxInfo*>( el ) );
 552         i_info_position = i_element_position;
 553     }
 554     else if( MKV_IS_ID( el, KaxTracks ) ) // FIXME
 555     {
 556         /* Multiple allowed */
 557         msg_Dbg( &sys.demuxer, "|   + Tracks" );
 558         if( i_tracks_position < 0 )
 559             ParseTracks( static_cast<KaxTracks*>( el ) );
 560         if ( tracks.size() == 0 )
 561         {
 562             msg_Err( &sys.demuxer, "No tracks supported" );
 563             delete el;
 564             es.I_O().setFilePointer( i_sav_position, seek_beginning );
 565             return false;
 566         }
 567         i_tracks_position = i_element_position;
 568     }
 569     else if( MKV_IS_ID( el, KaxCues ) )
 570     {
 571         msg_Dbg( &sys.demuxer, "|   + Cues" );
 572         if( i_cues_position < 0 )
 573             LoadCues( static_cast<KaxCues*>( el ) );
 574         i_cues_position = i_element_position;
 575     }
 576     else if( MKV_IS_ID( el, KaxAttachments ) )
 577     {
 578         msg_Dbg( &sys.demuxer, "|   + Attachments" );
 579         if( i_attachments_position < 0 )
 580             ParseAttachments( static_cast<KaxAttachments*>( el ) );
 581         i_attachments_position = i_element_position;
 582     }
 583     else if( MKV_IS_ID( el, KaxChapters ) )
 584     {
 585         msg_Dbg( &sys.demuxer, "|   + Chapters" );
 586         if( i_chapters_position < 0 )
 587             ParseChapters( static_cast<KaxChapters*>( el ) );
 588         i_chapters_position = i_element_position;
 589     }
 590     else if( MKV_IS_ID( el, KaxTag ) ) // FIXME
 591     {
 592         msg_Dbg( &sys.demuxer, "|   + Tags" );
 593         if( i_tags_position < 0 )
 594             ;//LoadTags( static_cast<KaxTags*>( el ) );
 595         i_tags_position = i_element_position;
 596     }
 597     else
 598     {
 599         msg_Dbg( &sys.demuxer, "|   + LoadSeekHeadItem Unknown (%s)", typeid(*el).name() );
 600     }
 601     delete el;
 602
 603     es.I_O().setFilePointer( i_sav_position, seek_beginning );
 604     return true;
 605 }
 606
 607 int matroska_segment_c::BlockFindTrackIndex( size_t *pi_track,
 608                                              const KaxBlock *p_block, const KaxSimpleBlock *p_simpleblock )
 609 {
 610     size_t          i_track;
 611
 612     for( i_track = 0; i_track < tracks.size(); i_track++ )
 613     {
 614         const mkv_track_t *tk = tracks[i_track];
 615
 616         if( ( p_block != NULL && tk->i_number == p_block->TrackNum() ) ||
 617             ( p_simpleblock != NULL && tk->i_number == p_simpleblock->TrackNum() ) )
 618         {
 619             break;
 620         }
 621     }
 622
 623     if( i_track >= tracks.size() )
 624         return VLC_EGENERIC;
 625
 626     if( pi_track )
 627         *pi_track = i_track;
 628     return VLC_SUCCESS;
 629 }
 630
 631 bool matroska_segment_c::Select( mtime_t i_start_time )
 632 {
 633     size_t i_track;
 634
 635     /* add all es */
 636     msg_Dbg( &sys.demuxer, "found %d es", (int)tracks.size() );
 637     sys.b_pci_packet_set = false;
 638
 639     for( i_track = 0; i_track < tracks.size(); i_track++ )
 640     {
 641         mkv_track_t *p_tk = tracks[i_track];
 642         es_format_t *p_fmt = &p_tk->fmt;
 643
 644         if( tracks[i_track]->fmt.i_cat == UNKNOWN_ES )
 645         {
 646             msg_Warn( &sys.demuxer, "invalid track[%d, n=%d]", (int)i_track, tracks[i_track]->i_number );
 647             tracks[i_track]->p_es = NULL;
 648             continue;
 649         }
 650
 651         if( !strcmp( tracks[i_track]->psz_codec, "V_MS/VFW/FOURCC" ) )
 652         {
 653             if( tracks[i_track]->i_extra_data < (int)sizeof( BITMAPINFOHEADER ) )
 654             {
 655                 msg_Err( &sys.demuxer, "missing/invalid BITMAPINFOHEADER" );
 656                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 657             }
 658             else
 659             {
 660                 BITMAPINFOHEADER *p_bih = (BITMAPINFOHEADER*)tracks[i_track]->p_extra_data;
 661
 662                 tracks[i_track]->fmt.video.i_width = GetDWLE( &p_bih->biWidth );
 663                 tracks[i_track]->fmt.video.i_height= GetDWLE( &p_bih->biHeight );
 664                 tracks[i_track]->fmt.i_codec       = GetFOURCC( &p_bih->biCompression );
 665
 666                 tracks[i_track]->fmt.i_extra       = GetDWLE( &p_bih->biSize ) - sizeof( BITMAPINFOHEADER );
 667                 if( tracks[i_track]->fmt.i_extra > 0 )
 668                 {
 669                     tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->fmt.i_extra );
 670                     memcpy( tracks[i_track]->fmt.p_extra, &p_bih[1], tracks[i_track]->fmt.i_extra );
 671                 }
 672             }
 673             p_tk->b_dts_only = true;
 674         }
 675         else if( !strcmp( tracks[i_track]->psz_codec, "V_MPEG1" ) ||
 676                  !strcmp( tracks[i_track]->psz_codec, "V_MPEG2" ) )
 677         {
 678             tracks[i_track]->fmt.i_codec = VLC_CODEC_MPGV;
 679         }
 680         else if( !strncmp( tracks[i_track]->psz_codec, "V_THEORA", 8 ) )
 681         {
 682             tracks[i_track]->fmt.i_codec = VLC_CODEC_THEORA;
 683             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 684             tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 685             memcpy( tracks[i_track]->fmt.p_extra,tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 686         }
 687         else if( !strncmp( tracks[i_track]->psz_codec, "V_REAL/RV", 9 ) )
 688         {
 689             if( !strcmp( p_tk->psz_codec, "V_REAL/RV10" ) )
 690                 p_fmt->i_codec = VLC_CODEC_RV10;
 691             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV20" ) )
 692                 p_fmt->i_codec = VLC_CODEC_RV20;
 693             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV30" ) )
 694                 p_fmt->i_codec = VLC_CODEC_RV30;
 695             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV40" ) )
 696                 p_fmt->i_codec = VLC_CODEC_RV40;
 697
 698             if( p_tk->i_extra_data > 26 )
 699             {
 700                 p_fmt->p_extra = malloc( p_tk->i_extra_data - 26 );
 701                 if( p_fmt->p_extra )
 702                 {
 703                     p_fmt->i_extra = p_tk->i_extra_data - 26;
 704                     memcpy( p_fmt->p_extra, &p_tk->p_extra_data[26], p_fmt->i_extra );
 705                 }
 706             }
 707             p_tk->b_dts_only = true;
 708         }
 709         else if( !strncmp( tracks[i_track]->psz_codec, "V_DIRAC", 7 ) )
 710         {
 711             tracks[i_track]->fmt.i_codec = VLC_CODEC_DIRAC;
 712         }
 713         else if( !strncmp( tracks[i_track]->psz_codec, "V_MPEG4", 7 ) )
 714         {
 715             if( !strcmp( tracks[i_track]->psz_codec, "V_MPEG4/MS/V3" ) )
 716             {
 717                 tracks[i_track]->fmt.i_codec = VLC_CODEC_DIV3;
 718             }
 719             else if( !strncmp( tracks[i_track]->psz_codec, "V_MPEG4/ISO", 11 ) )
 720             {
 721                 /* A MPEG 4 codec, SP, ASP, AP or AVC */
 722                 if( !strcmp( tracks[i_track]->psz_codec, "V_MPEG4/ISO/AVC" ) )
 723                     tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'a', 'v', 'c', '1' );
 724                 else
 725                     tracks[i_track]->fmt.i_codec = VLC_CODEC_MP4V;
 726                 tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 727                 tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 728                 memcpy( tracks[i_track]->fmt.p_extra,tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 729             }
 730         }
 731         else if( !strcmp( tracks[i_track]->psz_codec, "V_QUICKTIME" ) )
 732         {
 733             MP4_Box_t *p_box = (MP4_Box_t*)xmalloc( sizeof( MP4_Box_t ) );
 734             stream_t *p_mp4_stream = stream_MemoryNew( VLC_OBJECT(&sys.demuxer),
 735                                                        tracks[i_track]->p_extra_data,
 736                                                        tracks[i_track]->i_extra_data,
 737                                                        true );
 738             if( MP4_ReadBoxCommon( p_mp4_stream, p_box ) &&
 739                 MP4_ReadBox_sample_vide( p_mp4_stream, p_box ) )
 740             {
 741                 tracks[i_track]->fmt.i_codec = p_box->i_type;
 742                 tracks[i_track]->fmt.video.i_width = p_box->data.p_sample_vide->i_width;
 743                 tracks[i_track]->fmt.video.i_height = p_box->data.p_sample_vide->i_height;
 744                 tracks[i_track]->fmt.i_extra = p_box->data.p_sample_vide->i_qt_image_description;
 745                 tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->fmt.i_extra );
 746                 memcpy( tracks[i_track]->fmt.p_extra, p_box->data.p_sample_vide->p_qt_image_description, tracks[i_track]->fmt.i_extra );
 747                 MP4_FreeBox_sample_vide( p_box );
 748             }
 749             else
 750             {
 751                 free( p_box );
 752             }
 753             stream_Delete( p_mp4_stream );
 754         }
 755         else if( !strcmp( tracks[i_track]->psz_codec, "A_MS/ACM" ) )
 756         {
 757             if( tracks[i_track]->i_extra_data < (int)sizeof( WAVEFORMATEX ) )
 758             {
 759                 msg_Err( &sys.demuxer, "missing/invalid WAVEFORMATEX" );
 760                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 761             }
 762             else
 763             {
 764                 WAVEFORMATEX *p_wf = (WAVEFORMATEX*)tracks[i_track]->p_extra_data;
 765
 766                 wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &tracks[i_track]->fmt.i_codec, NULL );
 767
 768                 tracks[i_track]->fmt.audio.i_channels   = GetWLE( &p_wf->nChannels );
 769                 tracks[i_track]->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
 770                 tracks[i_track]->fmt.i_bitrate    = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
 771                 tracks[i_track]->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );;
 772                 tracks[i_track]->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
 773
 774                 tracks[i_track]->fmt.i_extra            = GetWLE( &p_wf->cbSize );
 775                 if( tracks[i_track]->fmt.i_extra > 0 )
 776                 {
 777                     tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->fmt.i_extra );
 778                     memcpy( tracks[i_track]->fmt.p_extra, &p_wf[1], tracks[i_track]->fmt.i_extra );
 779                 }
 780             }
 781         }
 782         else if( !strcmp( tracks[i_track]->psz_codec, "A_MPEG/L3" ) ||
 783                  !strcmp( tracks[i_track]->psz_codec, "A_MPEG/L2" ) ||
 784                  !strcmp( tracks[i_track]->psz_codec, "A_MPEG/L1" ) )
 785         {
 786             tracks[i_track]->fmt.i_codec = VLC_CODEC_MPGA;
 787         }
 788         else if( !strcmp( tracks[i_track]->psz_codec, "A_AC3" ) )
 789         {
 790             tracks[i_track]->fmt.i_codec = VLC_CODEC_A52;
 791         }
 792         else if( !strcmp( tracks[i_track]->psz_codec, "A_EAC3" ) )
 793         {
 794             tracks[i_track]->fmt.i_codec = VLC_CODEC_EAC3;
 795         }
 796         else if( !strcmp( tracks[i_track]->psz_codec, "A_DTS" ) )
 797         {
 798             tracks[i_track]->fmt.i_codec = VLC_CODEC_DTS;
 799         }
 800         else if( !strcmp( tracks[i_track]->psz_codec, "A_MLP" ) )
 801         {
 802             tracks[i_track]->fmt.i_codec = VLC_CODEC_MLP;
 803         }
 804         else if( !strcmp( tracks[i_track]->psz_codec, "A_TRUEHD" ) )
 805         {
 806             /* FIXME when more samples arrive */
 807             tracks[i_track]->fmt.i_codec = VLC_CODEC_TRUEHD;
 808             p_fmt->b_packetized = false;
 809         }
 810         else if( !strcmp( tracks[i_track]->psz_codec, "A_FLAC" ) )
 811         {
 812             tracks[i_track]->fmt.i_codec = VLC_CODEC_FLAC;
 813             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 814             tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 815             memcpy( tracks[i_track]->fmt.p_extra,tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 816         }
 817         else if( !strcmp( tracks[i_track]->psz_codec, "A_VORBIS" ) )
 818         {
 819             tracks[i_track]->fmt.i_codec = VLC_CODEC_VORBIS;
 820             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 821             tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 822             memcpy( tracks[i_track]->fmt.p_extra,tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 823         }
 824         else if( !strncmp( tracks[i_track]->psz_codec, "A_AAC/MPEG2/", strlen( "A_AAC/MPEG2/" ) ) ||
 825                  !strncmp( tracks[i_track]->psz_codec, "A_AAC/MPEG4/", strlen( "A_AAC/MPEG4/" ) ) )
 826         {
 827             int i_profile, i_srate, sbr = 0;
 828             static const unsigned int i_sample_rates[] =
 829             {
 830                     96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
 831                         16000, 12000, 11025, 8000,  7350,  0,     0,     0
 832             };
 833
 834             tracks[i_track]->fmt.i_codec = VLC_CODEC_MP4A;
 835             /* create data for faad (MP4DecSpecificDescrTag)*/
 836
 837             if( !strcmp( &tracks[i_track]->psz_codec[12], "MAIN" ) )
 838             {
 839                 i_profile = 0;
 840             }
 841             else if( !strcmp( &tracks[i_track]->psz_codec[12], "LC" ) )
 842             {
 843                 i_profile = 1;
 844             }
 845             else if( !strcmp( &tracks[i_track]->psz_codec[12], "SSR" ) )
 846             {
 847                 i_profile = 2;
 848             }
 849             else if( !strcmp( &tracks[i_track]->psz_codec[12], "LC/SBR" ) )
 850             {
 851                 i_profile = 1;
 852                 sbr = 1;
 853             }
 854             else
 855             {
 856                 i_profile = 3;
 857             }
 858
 859             for( i_srate = 0; i_srate < 13; i_srate++ )
 860             {
 861                 if( i_sample_rates[i_srate] == tracks[i_track]->i_original_rate )
 862                 {
 863                     break;
 864                 }
 865             }
 866             msg_Dbg( &sys.demuxer, "profile=%d srate=%d", i_profile, i_srate );
 867
 868             tracks[i_track]->fmt.i_extra = sbr ? 5 : 2;
 869             tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->fmt.i_extra );
 870             ((uint8_t*)tracks[i_track]->fmt.p_extra)[0] = ((i_profile + 1) << 3) | ((i_srate&0xe) >> 1);
 871             ((uint8_t*)tracks[i_track]->fmt.p_extra)[1] = ((i_srate & 0x1) << 7) | (tracks[i_track]->fmt.audio.i_channels << 3);
 872             if (sbr != 0)
 873             {
 874                 int syncExtensionType = 0x2B7;
 875                 int iDSRI;
 876                 for (iDSRI=0; iDSRI<13; iDSRI++)
 877                     if( i_sample_rates[iDSRI] == tracks[i_track]->fmt.audio.i_rate )
 878                         break;
 879                 ((uint8_t*)tracks[i_track]->fmt.p_extra)[2] = (syncExtensionType >> 3) & 0xFF;
 880                 ((uint8_t*)tracks[i_track]->fmt.p_extra)[3] = ((syncExtensionType & 0x7) << 5) | 5;
 881                 ((uint8_t*)tracks[i_track]->fmt.p_extra)[4] = ((1 & 0x1) << 7) | (iDSRI << 3);
 882             }
 883         }
 884         else if( !strcmp( tracks[i_track]->psz_codec, "A_AAC" ) )
 885         {
 886             tracks[i_track]->fmt.i_codec = VLC_CODEC_MP4A;
 887             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 888             tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 889             memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 890         }
 891         else if( !strcmp( tracks[i_track]->psz_codec, "A_WAVPACK4" ) )
 892         {
 893             tracks[i_track]->fmt.i_codec = VLC_CODEC_WAVPACK;
 894             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 895             tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 896             memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 897         }
 898         else if( !strcmp( tracks[i_track]->psz_codec, "A_TTA1" ) )
 899         {
 900             p_fmt->i_codec = VLC_CODEC_TTA;
 901             p_fmt->i_extra = p_tk->i_extra_data;
 902             if( p_fmt->i_extra > 0 )
 903             {
 904                 p_fmt->p_extra = xmalloc( p_tk->i_extra_data );
 905                 memcpy( p_fmt->p_extra, p_tk->p_extra_data, p_tk->i_extra_data );
 906             }
 907             else
 908             {
 909                 p_fmt->i_extra = 30;
 910                 p_fmt->p_extra = xmalloc( p_fmt->i_extra );
 911                 uint8_t *p_extra = (uint8_t*)p_fmt->p_extra;
 912                 memcpy( &p_extra[ 0], "TTA1", 4 );
 913                 SetWLE( &p_extra[ 4], 1 );
 914                 SetWLE( &p_extra[ 6], p_fmt->audio.i_channels );
 915                 SetWLE( &p_extra[ 8], p_fmt->audio.i_bitspersample );
 916                 SetDWLE( &p_extra[10], p_fmt->audio.i_rate );
 917                 SetDWLE( &p_extra[14], 0xffffffff );
 918                 memset( &p_extra[18], 0, 30  - 18 );
 919             }
 920         }
 921         else if( !strcmp( tracks[i_track]->psz_codec, "A_PCM/INT/BIG" ) ||
 922                  !strcmp( tracks[i_track]->psz_codec, "A_PCM/INT/LIT" ) ||
 923                  !strcmp( tracks[i_track]->psz_codec, "A_PCM/FLOAT/IEEE" ) )
 924         {
 925             if( !strcmp( tracks[i_track]->psz_codec, "A_PCM/INT/BIG" ) )
 926             {
 927                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
 928             }
 929             else
 930             {
 931                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
 932             }
 933             tracks[i_track]->fmt.audio.i_blockalign = ( tracks[i_track]->fmt.audio.i_bitspersample + 7 ) / 8 * tracks[i_track]->fmt.audio.i_channels;
 934         }
 935         /* disabled due to the potential "S_KATE" namespace issue */
 936         else if( !strcmp( tracks[i_track]->psz_codec, "S_KATE" ) )
 937         {
 938             int i, i_offset = 1, i_extra, num_headers, size_so_far;
 939             uint8_t *p_extra;
 940
 941             tracks[i_track]->fmt.i_codec = VLC_CODEC_KATE;
 942             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
 943
 944             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 945             tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 946             memcpy( tracks[i_track]->fmt.p_extra,tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 947         }
 948         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/ASCII" ) )
 949         {
 950             p_fmt->i_codec = VLC_CODEC_SUBT;
 951             p_fmt->subs.psz_encoding = NULL; /* Is there a place where it is stored ? */
 952         }
 953         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/UTF8" ) )
 954         {
 955             tracks[i_track]->fmt.i_codec = VLC_CODEC_SUBT;
 956             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
 957         }
 958         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/USF" ) )
 959         {
 960             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 's', 'f', ' ' );
 961             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
 962             if( tracks[i_track]->i_extra_data )
 963             {
 964                 tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 965                 tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 966                 memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 967             }
 968         }
 969         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/SSA" ) ||
 970                  !strcmp( tracks[i_track]->psz_codec, "S_TEXT/ASS" ) ||
 971                  !strcmp( tracks[i_track]->psz_codec, "S_SSA" ) ||
 972                  !strcmp( tracks[i_track]->psz_codec, "S_ASS" ))
 973         {
 974             tracks[i_track]->fmt.i_codec = VLC_CODEC_SSA;
 975             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
 976             if( tracks[i_track]->i_extra_data )
 977             {
 978                 tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 979                 tracks[i_track]->fmt.p_extra = xmalloc( tracks[i_track]->i_extra_data );
 980                 memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 981             }
 982         }
 983         else if( !strcmp( tracks[i_track]->psz_codec, "S_VOBSUB" ) )
 984         {
 985             tracks[i_track]->fmt.i_codec = VLC_CODEC_SPU;
 986             if( tracks[i_track]->i_extra_data )
 987             {
 988                 char *psz_start;
 989                 char *psz_buf = (char *)malloc( tracks[i_track]->i_extra_data + 1);
 990                 if( psz_buf != NULL )
 991                 {
 992                     memcpy( psz_buf, tracks[i_track]->p_extra_data , tracks[i_track]->i_extra_data );
 993                     psz_buf[tracks[i_track]->i_extra_data] = '\0';
 994
 995                     psz_start = strstr( psz_buf, "size:" );
 996                     if( psz_start &&
 997                         vobsub_size_parse( psz_start,
 998                                            &tracks[i_track]->fmt.subs.spu.i_original_frame_width,
 999                                            &tracks[i_track]->fmt.subs.spu.i_original_frame_height ) == VLC_SUCCESS )
1000                     {
1001                         msg_Dbg( &sys.demuxer, "original frame size vobsubs: %dx%d",
1002                                  tracks[i_track]->fmt.subs.spu.i_original_frame_width,
1003                                  tracks[i_track]->fmt.subs.spu.i_original_frame_height );
1004                     }
1005                     else
1006                     {
1007                         msg_Warn( &sys.demuxer, "reading original frame size for vobsub failed" );
1008                     }
1009
1010                     psz_start = strstr( psz_buf, "palette:" );
1011                     if( psz_start &&
1012                         vobsub_palette_parse( psz_start, &tracks[i_track]->fmt.subs.spu.palette[1] ) == VLC_SUCCESS )
1013                     {
1014                         tracks[i_track]->fmt.subs.spu.palette[0] =  0xBeef;
1015                         msg_Dbg( &sys.demuxer, "vobsub palette read" );
1016                     }
1017                     else
1018                     {
1019                         msg_Warn( &sys.demuxer, "reading original palette failed" );
1020                     }
1021                     free( psz_buf );
1022                 }
1023             }
1024         }
1025         else if( !strcmp( tracks[i_track]->psz_codec, "S_HDMV/PGS" ) )
1026         {
1027             tracks[i_track]->fmt.i_codec = VLC_CODEC_BD_PG;
1028         }
1029         else if( !strcmp( tracks[i_track]->psz_codec, "B_VOBBTN" ) )
1030         {
1031             tracks[i_track]->fmt.i_cat = NAV_ES;
1032             continue;
1033         }
1034         else if( !strcmp( p_tk->psz_codec, "A_REAL/14_4" ) )
1035         {
1036             p_fmt->i_codec = VLC_CODEC_RA_144;
1037             p_fmt->audio.i_channels = 1;
1038             p_fmt->audio.i_rate = 8000;
1039             p_fmt->audio.i_blockalign = 0x14;
1040         }
1041         else
1042         {
1043             msg_Err( &sys.demuxer, "unknown codec id=`%s'", tracks[i_track]->psz_codec );
1044             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
1045         }
1046         if( tracks[i_track]->b_default )
1047         {
1048             tracks[i_track]->fmt.i_priority = 1000;
1049         }
1050
1051         tracks[i_track]->p_es = es_out_Add( sys.demuxer.out, &tracks[i_track]->fmt );
1052
1053         /* Turn on a subtitles track if it has been flagged as default -
1054          * but only do this if no subtitles track has already been engaged,
1055          * either by an earlier 'default track' (??) or by default
1056          * language choice behaviour.
1057          */
1058         if( tracks[i_track]->b_default )
1059         {
1060             es_out_Control( sys.demuxer.out,
1061                             ES_OUT_SET_ES_DEFAULT,
1062                             tracks[i_track]->p_es );
1063         }
1064     }
1065     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_start_time );
1066
1067     sys.i_start_pts = i_start_time;
1068     // reset the stream reading to the first cluster of the segment used
1069     es.I_O().setFilePointer( i_start_pos );
1070
1071     delete ep;
1072     ep = new EbmlParser( &es, segment, &sys.demuxer );
1073
1074     return true;
1075 }
1076
1077 void matroska_segment_c::UnSelect( )
1078 {
1079     size_t i_track;
1080
1081     for( i_track = 0; i_track < tracks.size(); i_track++ )
1082     {
1083         if ( tracks[i_track]->p_es != NULL )
1084         {
1085 //            es_format_Clean( &tracks[i_track]->fmt );
1086             es_out_Del( sys.demuxer.out, tracks[i_track]->p_es );
1087             tracks[i_track]->p_es = NULL;
1088         }
1089     }
1090     delete ep;
1091     ep = NULL;
1092 }
1093
1094 int matroska_segment_c::BlockGet( KaxBlock * & pp_block, KaxSimpleBlock * & pp_simpleblock, int64_t *pi_ref1, int64_t *pi_ref2, int64_t *pi_duration )
1095 {
1096     pp_simpleblock = NULL;
1097     pp_block = NULL;
1098     *pi_ref1  = 0;
1099     *pi_ref2  = 0;
1100
1101     for( ;; )
1102     {
1103         EbmlElement *el = NULL;
1104         int         i_level;
1105
1106         if ( ep == NULL )
1107             return VLC_EGENERIC;
1108
1109         if( pp_simpleblock != NULL || ((el = ep->Get()) == NULL && pp_block != NULL) )
1110         {
1111             /* Check blocks validity to protect againts broken files */
1112             if( BlockFindTrackIndex( NULL, pp_block , pp_simpleblock ) )
1113             {
1114                 delete pp_block;
1115                 pp_simpleblock = NULL;
1116                 pp_block = NULL;
1117                 continue;
1118             }
1119
1120             /* update the index */
1121 #define idx p_indexes[i_index - 1]
1122             if( i_index > 0 && idx.i_time == -1 )
1123             {
1124                 if ( pp_simpleblock != NULL )
1125                     idx.i_time        = pp_simpleblock->GlobalTimecode() / (mtime_t)1000;
1126                 else
1127                     idx.i_time        = (*pp_block).GlobalTimecode() / (mtime_t)1000;
1128                 idx.b_key         = *pi_ref1 == 0 ? true : false;
1129             }
1130 #undef idx
1131             return VLC_SUCCESS;
1132         }
1133
1134         i_level = ep->GetLevel();
1135
1136         if( el == NULL )
1137         {
1138             if( i_level > 1 )
1139             {
1140                 ep->Up();
1141                 continue;
1142             }
1143             msg_Warn( &sys.demuxer, "EOF" );
1144             return VLC_EGENERIC;
1145         }
1146
1147         /* Verify that we are still inside our cluster
1148          * It can happens whith broken files and when seeking
1149          * without index */
1150         if( i_level > 1 )
1151         {
1152             if( cluster && !ep->IsTopPresent( cluster ) )
1153             {
1154                 msg_Warn( &sys.demuxer, "Unexpected escape from current cluster" );
1155                 cluster = NULL;
1156             }
1157             if( !cluster )
1158                 continue;
1159         }
1160
1161         /* do parsing */
1162         switch ( i_level )
1163         {
1164         case 1:
1165             if( MKV_IS_ID( el, KaxCluster ) )
1166             {
1167                 cluster = (KaxCluster*)el;
1168                 i_cluster_pos = cluster->GetElementPosition();
1169
1170                 /* add it to the index */
1171                 if( i_index == 0 ||
1172                     ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
1173                 {
1174                     IndexAppendCluster( cluster );
1175                 }
1176
1177                 // reset silent tracks
1178                 for (size_t i=0; i<tracks.size(); i++)
1179                 {
1180                     tracks[i]->b_silent = false;
1181                 }
1182
1183                 ep->Down();
1184             }
1185             else if( MKV_IS_ID( el, KaxCues ) )
1186             {
1187                 msg_Warn( &sys.demuxer, "find KaxCues FIXME" );
1188                 return VLC_EGENERIC;
1189             }
1190             else
1191             {
1192                 msg_Dbg( &sys.demuxer, "unknown (%s)", typeid( el ).name() );
1193             }
1194             break;
1195         case 2:
1196             if( MKV_IS_ID( el, KaxClusterTimecode ) )
1197             {
1198                 KaxClusterTimecode &ctc = *(KaxClusterTimecode*)el;
1199
1200                 ctc.ReadData( es.I_O(), SCOPE_ALL_DATA );
1201                 cluster->InitTimecode( uint64( ctc ), i_timescale );
1202             }
1203             else if( MKV_IS_ID( el, KaxClusterSilentTracks ) )
1204             {
1205                 ep->Down();
1206             }
1207             else if( MKV_IS_ID( el, KaxBlockGroup ) )
1208             {
1209                 i_block_pos = el->GetElementPosition();
1210                 ep->Down();
1211             }
1212             else if( MKV_IS_ID( el, KaxSimpleBlock ) )
1213             {
1214                 pp_simpleblock = (KaxSimpleBlock*)el;
1215
1216                 pp_simpleblock->ReadData( es.I_O() );
1217                 pp_simpleblock->SetParent( *cluster );
1218             }
1219             break;
1220         case 3:
1221             if( MKV_IS_ID( el, KaxBlock ) )
1222             {
1223                 pp_block = (KaxBlock*)el;
1224
1225                 pp_block->ReadData( es.I_O() );
1226                 pp_block->SetParent( *cluster );
1227
1228                 ep->Keep();
1229             }
1230             else if( MKV_IS_ID( el, KaxBlockDuration ) )
1231             {
1232                 KaxBlockDuration &dur = *(KaxBlockDuration*)el;
1233
1234                 dur.ReadData( es.I_O() );
1235                 *pi_duration = uint64( dur );
1236             }
1237             else if( MKV_IS_ID( el, KaxReferenceBlock ) )
1238             {
1239                 KaxReferenceBlock &ref = *(KaxReferenceBlock*)el;
1240
1241                 ref.ReadData( es.I_O() );
1242                 if( *pi_ref1 == 0 )
1243                 {
1244                     *pi_ref1 = int64( ref ) * cluster->GlobalTimecodeScale();
1245                 }
1246                 else if( *pi_ref2 == 0 )
1247                 {
1248                     *pi_ref2 = int64( ref ) * cluster->GlobalTimecodeScale();
1249                 }
1250             }
1251             else if( MKV_IS_ID( el, KaxClusterSilentTrackNumber ) )
1252             {
1253                 KaxClusterSilentTrackNumber &track_num = *(KaxClusterSilentTrackNumber*)el;
1254                 track_num.ReadData( es.I_O() );
1255                 // find the track
1256                 for (size_t i=0; i<tracks.size(); i++)
1257                 {
1258                     if ( tracks[i]->i_number == uint32(track_num))
1259                     {
1260                         tracks[i]->b_silent = true;
1261                         break;
1262                     }
1263                 }
1264             }
1265             break;
1266         default:
1267             msg_Err( &sys.demuxer, "invalid level = %d", i_level );
1268             return VLC_EGENERIC;
1269         }
1270     }
1271 }
1272