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 /* Destructor */
  32 matroska_segment_c::~matroska_segment_c()
  33 {
  34     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
  35     {
  36         delete tracks[i_track]->p_compression_data;
  37         es_format_Clean( &tracks[i_track]->fmt );
  38         free( tracks[i_track]->p_extra_data );
  39         free( tracks[i_track]->psz_codec );
  40         delete tracks[i_track];
  41     }
  42
  43     free( psz_writing_application );
  44     free( psz_muxing_application );
  45     free( psz_segment_filename );
  46     free( psz_title );
  47     free( psz_date_utc );
  48     free( p_indexes );
  49
  50     delete ep;
  51     delete segment;
  52     delete p_segment_uid;
  53     delete p_prev_segment_uid;
  54     delete p_next_segment_uid;
  55
  56     std::vector<chapter_edition_c*>::iterator index = stored_editions.begin();
  57     while ( index != stored_editions.end() )
  58     {
  59         delete (*index);
  60         index++;
  61     }
  62     std::vector<chapter_translation_c*>::iterator indext = translations.begin();
  63     while ( indext != translations.end() )
  64     {
  65         delete (*indext);
  66         indext++;
  67     }
  68     std::vector<KaxSegmentFamily*>::iterator indexf = families.begin();
  69     while ( indexf != families.end() )
  70     {
  71         delete (*indexf);
  72         indexf++;
  73    }
  74 }
  75
  76
  77 /*****************************************************************************
  78  * Tools
  79  *  * LoadCues : load the cues element and update index
  80  *
  81  *  * LoadTags : load ... the tags element
  82  *
  83  *  * InformationCreate : create all information, load tags if present
  84  *
  85  *****************************************************************************/
  86 void matroska_segment_c::LoadCues( KaxCues *cues )
  87 {
  88     EbmlParser  *ep;
  89     EbmlElement *el;
  90
  91     if( b_cues )
  92     {
  93         msg_Err( &sys.demuxer, "There can be only 1 Cues per section." );
  94         return;
  95     }
  96
  97     ep = new EbmlParser( &es, cues, &sys.demuxer );
  98     while( ( el = ep->Get() ) != NULL )
  99     {
 100         if( MKV_IS_ID( el, KaxCuePoint ) )
 101         {
 102 #define idx p_indexes[i_index]
 103
 104             idx.i_track       = -1;
 105             idx.i_block_number= -1;
 106             idx.i_position    = -1;
 107             idx.i_time        = 0;
 108             idx.b_key         = true;
 109
 110             ep->Down();
 111             while( ( el = ep->Get() ) != NULL )
 112             {
 113                 if( MKV_IS_ID( el, KaxCueTime ) )
 114                 {
 115                     KaxCueTime &ctime = *(KaxCueTime*)el;
 116
 117                     ctime.ReadData( es.I_O() );
 118
 119                     idx.i_time = uint64( ctime ) * i_timescale / (mtime_t)1000;
 120                 }
 121                 else if( MKV_IS_ID( el, KaxCueTrackPositions ) )
 122                 {
 123                     ep->Down();
 124                     while( ( el = ep->Get() ) != NULL )
 125                     {
 126                         if( MKV_IS_ID( el, KaxCueTrack ) )
 127                         {
 128                             KaxCueTrack &ctrack = *(KaxCueTrack*)el;
 129
 130                             ctrack.ReadData( es.I_O() );
 131                             idx.i_track = uint16( ctrack );
 132                         }
 133                         else if( MKV_IS_ID( el, KaxCueClusterPosition ) )
 134                         {
 135                             KaxCueClusterPosition &ccpos = *(KaxCueClusterPosition*)el;
 136
 137                             ccpos.ReadData( es.I_O() );
 138                             idx.i_position = segment->GetGlobalPosition( uint64( ccpos ) );
 139                         }
 140                         else if( MKV_IS_ID( el, KaxCueBlockNumber ) )
 141                         {
 142                             KaxCueBlockNumber &cbnum = *(KaxCueBlockNumber*)el;
 143
 144                             cbnum.ReadData( es.I_O() );
 145                             idx.i_block_number = uint32( cbnum );
 146                         }
 147                         else
 148                         {
 149                             msg_Dbg( &sys.demuxer, "         * Unknown (%s)", typeid(*el).name() );
 150                         }
 151                     }
 152                     ep->Up();
 153                 }
 154                 else
 155                 {
 156                     msg_Dbg( &sys.demuxer, "     * Unknown (%s)", typeid(*el).name() );
 157                 }
 158             }
 159             ep->Up();
 160
 161 #if 0
 162             msg_Dbg( &sys.demuxer, " * added time=%"PRId64" pos=%"PRId64
 163                      " track=%d bnum=%d", idx.i_time, idx.i_position,
 164                      idx.i_track, idx.i_block_number );
 165 #endif
 166
 167             i_index++;
 168             if( i_index >= i_index_max )
 169             {
 170                 i_index_max += 1024;
 171                 p_indexes = (mkv_index_t*)realloc( p_indexes, sizeof( mkv_index_t ) * i_index_max );
 172             }
 173 #undef idx
 174         }
 175         else
 176         {
 177             msg_Dbg( &sys.demuxer, " * Unknown (%s)", typeid(*el).name() );
 178         }
 179     }
 180     delete ep;
 181     b_cues = true;
 182     msg_Dbg( &sys.demuxer, "|   - loading cues done." );
 183 }
 184
 185 void matroska_segment_c::LoadTags( KaxTags *tags )
 186 {
 187     EbmlParser  *ep;
 188     EbmlElement *el;
 189
 190     /* Master elements */
 191     ep = new EbmlParser( &es, tags, &sys.demuxer );
 192
 193     while( ( el = ep->Get() ) != NULL )
 194     {
 195         if( MKV_IS_ID( el, KaxTag ) )
 196         {
 197             msg_Dbg( &sys.demuxer, "+ Tag" );
 198             ep->Down();
 199             while( ( el = ep->Get() ) != NULL )
 200             {
 201                 if( MKV_IS_ID( el, KaxTagTargets ) )
 202                 {
 203                     msg_Dbg( &sys.demuxer, "|   + Targets" );
 204                     ep->Down();
 205                     while( ( el = ep->Get() ) != NULL )
 206                     {
 207                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 208                     }
 209                     ep->Up();
 210                 }
 211                 else if( MKV_IS_ID( el, KaxTagGeneral ) )
 212                 {
 213                     msg_Dbg( &sys.demuxer, "|   + General" );
 214                     ep->Down();
 215                     while( ( el = ep->Get() ) != NULL )
 216                     {
 217                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 218                     }
 219                     ep->Up();
 220                 }
 221                 else if( MKV_IS_ID( el, KaxTagGenres ) )
 222                 {
 223                     msg_Dbg( &sys.demuxer, "|   + Genres" );
 224                     ep->Down();
 225                     while( ( el = ep->Get() ) != NULL )
 226                     {
 227                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 228                     }
 229                     ep->Up();
 230                 }
 231                 else if( MKV_IS_ID( el, KaxTagAudioSpecific ) )
 232                 {
 233                     msg_Dbg( &sys.demuxer, "|   + Audio Specific" );
 234                     ep->Down();
 235                     while( ( el = ep->Get() ) != NULL )
 236                     {
 237                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 238                     }
 239                     ep->Up();
 240                 }
 241                 else if( MKV_IS_ID( el, KaxTagImageSpecific ) )
 242                 {
 243                     msg_Dbg( &sys.demuxer, "|   + Images Specific" );
 244                     ep->Down();
 245                     while( ( el = ep->Get() ) != NULL )
 246                     {
 247                         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() );
 248                     }
 249                     ep->Up();
 250                 }
 251                 else if( MKV_IS_ID( el, KaxTagMultiComment ) )
 252                 {
 253                     msg_Dbg( &sys.demuxer, "|   + Multi Comment" );
 254                 }
 255                 else if( MKV_IS_ID( el, KaxTagMultiCommercial ) )
 256                 {
 257                     msg_Dbg( &sys.demuxer, "|   + Multi Commercial" );
 258                 }
 259                 else if( MKV_IS_ID( el, KaxTagMultiDate ) )
 260                 {
 261                     msg_Dbg( &sys.demuxer, "|   + Multi Date" );
 262                 }
 263                 else if( MKV_IS_ID( el, KaxTagMultiEntity ) )
 264                 {
 265                     msg_Dbg( &sys.demuxer, "|   + Multi Entity" );
 266                 }
 267                 else if( MKV_IS_ID( el, KaxTagMultiIdentifier ) )
 268                 {
 269                     msg_Dbg( &sys.demuxer, "|   + Multi Identifier" );
 270                 }
 271                 else if( MKV_IS_ID( el, KaxTagMultiLegal ) )
 272                 {
 273                     msg_Dbg( &sys.demuxer, "|   + Multi Legal" );
 274                 }
 275                 else if( MKV_IS_ID( el, KaxTagMultiTitle ) )
 276                 {
 277                     msg_Dbg( &sys.demuxer, "|   + Multi Title" );
 278                 }
 279                 else
 280                 {
 281                     msg_Dbg( &sys.demuxer, "|   + LoadTag Unknown (%s)", typeid( *el ).name() );
 282                 }
 283             }
 284             ep->Up();
 285         }
 286         else
 287         {
 288             msg_Dbg( &sys.demuxer, "+ Unknown (%s)", typeid( *el ).name() );
 289         }
 290     }
 291     delete ep;
 292
 293     msg_Dbg( &sys.demuxer, "loading tags done." );
 294 }
 295
 296 /*****************************************************************************
 297  * InformationCreate:
 298  *****************************************************************************/
 299 void matroska_segment_c::InformationCreate( )
 300 {
 301     sys.meta = vlc_meta_New();
 302
 303     if( psz_title )
 304     {
 305         vlc_meta_SetTitle( sys.meta, psz_title );
 306     }
 307     if( psz_date_utc )
 308     {
 309         vlc_meta_SetDate( sys.meta, psz_date_utc );
 310     }
 311 #if 0
 312     if( psz_segment_filename )
 313     {
 314         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 315     }
 316     if( psz_muxing_application )
 317     {
 318         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 319     }
 320     if( psz_writing_application )
 321     {
 322         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 323     }
 324
 325     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
 326     {
 327 //        mkv_track_t *tk = tracks[i_track];
 328 //        vlc_meta_t *mtk = vlc_meta_New();
 329         fprintf( stderr, "***** WARNING: Unhandled child meta\n");
 330     }
 331 #endif
 332 #if 0
 333     if( i_tags_position >= 0 )
 334     {
 335         bool b_seekable;
 336
 337         stream_Control( sys.demuxer.s, STREAM_CAN_FASTSEEK, &b_seekable );
 338         if( b_seekable )
 339         {
 340             LoadTags( );
 341         }
 342     }
 343 #endif
 344 }
 345
 346
 347 /*****************************************************************************
 348  * Misc
 349  *****************************************************************************/
 350
 351 void matroska_segment_c::IndexAppendCluster( KaxCluster *cluster )
 352 {
 353 #define idx p_indexes[i_index]
 354     idx.i_track       = -1;
 355     idx.i_block_number= -1;
 356     idx.i_position    = cluster->GetElementPosition();
 357     idx.i_time        = -1;
 358     idx.b_key         = true;
 359
 360     i_index++;
 361     if( i_index >= i_index_max )
 362     {
 363         i_index_max += 1024;
 364         p_indexes = (mkv_index_t*)realloc( p_indexes, sizeof( mkv_index_t ) * i_index_max );
 365     }
 366 #undef idx
 367 }
 368
 369
 370 bool matroska_segment_c::PreloadFamily( const matroska_segment_c & of_segment )
 371 {
 372     if ( b_preloaded )
 373         return false;
 374
 375     for (size_t i=0; i<families.size(); i++)
 376     {
 377         for (size_t j=0; j<of_segment.families.size(); j++)
 378         {
 379             if ( *(families[i]) == *(of_segment.families[j]) )
 380                 return Preload( );
 381         }
 382     }
 383
 384     return false;
 385 }
 386
 387 bool matroska_segment_c::CompareSegmentUIDs( const matroska_segment_c * p_item_a, const matroska_segment_c * p_item_b )
 388 {
 389     EbmlBinary *p_tmp;
 390
 391     if ( p_item_a == NULL || p_item_b == NULL )
 392         return false;
 393
 394     p_tmp = (EbmlBinary *)p_item_a->p_segment_uid;
 395     if ( p_item_b->p_prev_segment_uid != NULL
 396           && *p_tmp == *p_item_b->p_prev_segment_uid )
 397         return true;
 398
 399     p_tmp = (EbmlBinary *)p_item_a->p_next_segment_uid;
 400     if ( !p_tmp )
 401         return false;
 402
 403     if ( p_item_b->p_segment_uid != NULL
 404           && *p_tmp == *p_item_b->p_segment_uid )
 405         return true;
 406
 407     if ( p_item_b->p_prev_segment_uid != NULL
 408           && *p_tmp == *p_item_b->p_prev_segment_uid )
 409         return true;
 410
 411     return false;
 412 }
 413
 414 bool matroska_segment_c::Preload( )
 415 {
 416     if ( b_preloaded )
 417         return false;
 418
 419     EbmlElement *el = NULL;
 420
 421     ep->Reset( &sys.demuxer );
 422
 423     while( ( el = ep->Get() ) != NULL )
 424     {
 425         if( MKV_IS_ID( el, KaxSeekHead ) )
 426         {
 427             /* Multiple allowed */
 428             /* We bail at 10, to prevent possible recursion */
 429             msg_Dbg(  &sys.demuxer, "|   + Seek head" );
 430             if( i_seekhead_count < 10 )
 431             {
 432                 i_seekhead_position = (int64_t) es.I_O().getFilePointer();
 433                 ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 434             }
 435         }
 436         else if( MKV_IS_ID( el, KaxInfo ) )
 437         {
 438             /* Multiple allowed, mandatory */
 439             msg_Dbg(  &sys.demuxer, "|   + Information" );
 440             if( i_info_position < 0 ) // FIXME
 441                 ParseInfo( static_cast<KaxInfo*>( el ) );
 442             i_info_position = (int64_t) es.I_O().getFilePointer();
 443         }
 444         else if( MKV_IS_ID( el, KaxTracks ) )
 445         {
 446             /* Multiple allowed */
 447             msg_Dbg(  &sys.demuxer, "|   + Tracks" );
 448             if( i_tracks_position < 0 ) // FIXME
 449                 ParseTracks( static_cast<KaxTracks*>( el ) );
 450             if ( tracks.size() == 0 )
 451             {
 452                 msg_Err( &sys.demuxer, "No tracks supported" );
 453                 return false;
 454             }
 455             i_tracks_position = (int64_t) es.I_O().getFilePointer();
 456         }
 457         else if( MKV_IS_ID( el, KaxCues ) )
 458         {
 459             msg_Dbg(  &sys.demuxer, "|   + Cues" );
 460             if( i_cues_position < 0 )
 461                 LoadCues( static_cast<KaxCues*>( el ) );
 462             i_cues_position = (int64_t) es.I_O().getFilePointer();
 463         }
 464         else if( MKV_IS_ID( el, KaxCluster ) )
 465         {
 466             msg_Dbg( &sys.demuxer, "|   + Cluster" );
 467
 468             cluster = (KaxCluster*)el;
 469
 470             i_cluster_pos = i_start_pos = cluster->GetElementPosition();
 471             ParseCluster( );
 472
 473             ep->Down();
 474             /* stop pre-parsing the stream */
 475             break;
 476         }
 477         else if( MKV_IS_ID( el, KaxAttachments ) )
 478         {
 479             msg_Dbg( &sys.demuxer, "|   + Attachments" );
 480             if( i_attachments_position < 0 )
 481                 ParseAttachments( static_cast<KaxAttachments*>( el ) );
 482             i_attachments_position = (int64_t) es.I_O().getFilePointer();
 483         }
 484         else if( MKV_IS_ID( el, KaxChapters ) )
 485         {
 486             msg_Dbg( &sys.demuxer, "|   + Chapters" );
 487             if( i_chapters_position < 0 )
 488                 ParseChapters( static_cast<KaxChapters*>( el ) );
 489             i_chapters_position = (int64_t) es.I_O().getFilePointer();
 490         }
 491         else if( MKV_IS_ID( el, KaxTag ) )
 492         {
 493             msg_Dbg( &sys.demuxer, "|   + Tags" );
 494             if( i_tags_position < 0) // FIXME
 495                 ;//LoadTags( static_cast<KaxTags*>( el ) );
 496             i_tags_position = (int64_t) es.I_O().getFilePointer();
 497         }
 498         else
 499             msg_Dbg( &sys.demuxer, "|   + Preload Unknown (%s)", typeid(*el).name() );
 500     }
 501
 502     b_preloaded = true;
 503
 504     return true;
 505 }
 506
 507 /* Here we try to load elements that were found in Seek Heads, but not yet parsed */
 508 bool matroska_segment_c::LoadSeekHeadItem( const EbmlCallbacks & ClassInfos, int64_t i_element_position )
 509 {
 510     int64_t     i_sav_position = (int64_t)es.I_O().getFilePointer();
 511     EbmlElement *el;
 512
 513     es.I_O().setFilePointer( i_element_position, seek_beginning );
 514     el = es.FindNextID( ClassInfos, 0xFFFFFFFFL);
 515
 516     if( el == NULL )
 517     {
 518         msg_Err( &sys.demuxer, "cannot load some cues/chapters/tags etc. (broken seekhead or file)" );
 519         es.I_O().setFilePointer( i_sav_position, seek_beginning );
 520         return false;
 521     }
 522
 523     if( MKV_IS_ID( el, KaxSeekHead ) )
 524     {
 525         /* Multiple allowed */
 526         msg_Dbg( &sys.demuxer, "|   + Seek head" );
 527         if( i_seekhead_count < 10 )
 528         {
 529             i_seekhead_position = i_element_position;
 530             ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 531         }
 532     }
 533     else if( MKV_IS_ID( el, KaxInfo ) ) // FIXME
 534     {
 535         /* Multiple allowed, mandatory */
 536         msg_Dbg( &sys.demuxer, "|   + Information" );
 537         if( i_info_position < 0 )
 538             ParseInfo( static_cast<KaxInfo*>( el ) );
 539         i_info_position = i_element_position;
 540     }
 541     else if( MKV_IS_ID( el, KaxTracks ) ) // FIXME
 542     {
 543         /* Multiple allowed */
 544         msg_Dbg( &sys.demuxer, "|   + Tracks" );
 545         if( i_tracks_position < 0 )
 546             ParseTracks( static_cast<KaxTracks*>( el ) );
 547         if ( tracks.size() == 0 )
 548         {
 549             msg_Err( &sys.demuxer, "No tracks supported" );
 550             delete el;
 551             es.I_O().setFilePointer( i_sav_position, seek_beginning );
 552             return false;
 553         }
 554         i_tracks_position = i_element_position;
 555     }
 556     else if( MKV_IS_ID( el, KaxCues ) )
 557     {
 558         msg_Dbg( &sys.demuxer, "|   + Cues" );
 559         if( i_cues_position < 0 )
 560             LoadCues( static_cast<KaxCues*>( el ) );
 561         i_cues_position = i_element_position;
 562     }
 563     else if( MKV_IS_ID( el, KaxAttachments ) )
 564     {
 565         msg_Dbg( &sys.demuxer, "|   + Attachments" );
 566         if( i_attachments_position < 0 )
 567             ParseAttachments( static_cast<KaxAttachments*>( el ) );
 568         i_attachments_position = i_element_position;
 569     }
 570     else if( MKV_IS_ID( el, KaxChapters ) )
 571     {
 572         msg_Dbg( &sys.demuxer, "|   + Chapters" );
 573         if( i_chapters_position < 0 )
 574             ParseChapters( static_cast<KaxChapters*>( el ) );
 575         i_chapters_position = i_element_position;
 576     }
 577     else if( MKV_IS_ID( el, KaxTag ) ) // FIXME
 578     {
 579         msg_Dbg( &sys.demuxer, "|   + Tags" );
 580         if( i_tags_position < 0 )
 581             ;//LoadTags( static_cast<KaxTags*>( el ) );
 582         i_tags_position = i_element_position;
 583     }
 584     else
 585     {
 586         msg_Dbg( &sys.demuxer, "|   + LoadSeekHeadItem Unknown (%s)", typeid(*el).name() );
 587     }
 588     delete el;
 589
 590     es.I_O().setFilePointer( i_sav_position, seek_beginning );
 591     return true;
 592 }
 593
 594 int matroska_segment_c::BlockFindTrackIndex( size_t *pi_track,
 595                                              const KaxBlock *p_block, const KaxSimpleBlock *p_simpleblock )
 596 {
 597     size_t          i_track;
 598
 599     for( i_track = 0; i_track < tracks.size(); i_track++ )
 600     {
 601         const mkv_track_t *tk = tracks[i_track];
 602
 603         if( ( p_block != NULL && tk->i_number == p_block->TrackNum() ) ||
 604             ( p_simpleblock != NULL && tk->i_number == p_simpleblock->TrackNum() ) )
 605         {
 606             break;
 607         }
 608     }
 609
 610     if( i_track >= tracks.size() )
 611         return VLC_EGENERIC;
 612
 613     if( pi_track )
 614         *pi_track = i_track;
 615     return VLC_SUCCESS;
 616 }
 617
 618 bool matroska_segment_c::Select( mtime_t i_start_time )
 619 {
 620     size_t i_track;
 621
 622     /* add all es */
 623     msg_Dbg( &sys.demuxer, "found %d es", (int)tracks.size() );
 624     sys.b_pci_packet_set = false;
 625
 626     for( i_track = 0; i_track < tracks.size(); i_track++ )
 627     {
 628         mkv_track_t *p_tk = tracks[i_track];
 629         es_format_t *p_fmt = &p_tk->fmt;
 630
 631         if( tracks[i_track]->fmt.i_cat == UNKNOWN_ES )
 632         {
 633             msg_Warn( &sys.demuxer, "invalid track[%d, n=%d]", (int)i_track, tracks[i_track]->i_number );
 634             tracks[i_track]->p_es = NULL;
 635             continue;
 636         }
 637
 638         if( !strcmp( tracks[i_track]->psz_codec, "V_MS/VFW/FOURCC" ) )
 639         {
 640             if( tracks[i_track]->i_extra_data < (int)sizeof( BITMAPINFOHEADER ) )
 641             {
 642                 msg_Err( &sys.demuxer, "missing/invalid BITMAPINFOHEADER" );
 643                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 644             }
 645             else
 646             {
 647                 BITMAPINFOHEADER *p_bih = (BITMAPINFOHEADER*)tracks[i_track]->p_extra_data;
 648
 649                 tracks[i_track]->fmt.video.i_width = GetDWLE( &p_bih->biWidth );
 650                 tracks[i_track]->fmt.video.i_height= GetDWLE( &p_bih->biHeight );
 651                 tracks[i_track]->fmt.i_codec       = GetFOURCC( &p_bih->biCompression );
 652
 653                 tracks[i_track]->fmt.i_extra       = GetDWLE( &p_bih->biSize ) - sizeof( BITMAPINFOHEADER );
 654                 if( tracks[i_track]->fmt.i_extra > 0 )
 655                 {
 656                     tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->fmt.i_extra );
 657                     memcpy( tracks[i_track]->fmt.p_extra, &p_bih[1], tracks[i_track]->fmt.i_extra );
 658                 }
 659             }
 660         }
 661         else if( !strcmp( tracks[i_track]->psz_codec, "V_MPEG1" ) ||
 662                  !strcmp( tracks[i_track]->psz_codec, "V_MPEG2" ) )
 663         {
 664             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'v' );
 665         }
 666         else if( !strncmp( tracks[i_track]->psz_codec, "V_THEORA", 8 ) )
 667         {
 668             uint8_t *p_data = tracks[i_track]->p_extra_data;
 669             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 't', 'h', 'e', 'o' );
 670             if( tracks[i_track]->i_extra_data >= 4 ) {
 671                 if( p_data[0] == 2 ) {
 672                     int i = 1;
 673                     int i_size1 = 0, i_size2 = 0;
 674                     p_data++;
 675                     /* read size of first header packet */
 676                     while( *p_data == 0xFF &&
 677                            i < tracks[i_track]->i_extra_data )
 678                     {
 679                         i_size1 += *p_data;
 680                         p_data++;
 681                         i++;
 682                     }
 683                     i_size1 += *p_data;
 684                     p_data++;
 685                     i++;
 686                     msg_Dbg( &sys.demuxer, "first theora header size %d", i_size1 );
 687                     /* read size of second header packet */
 688                     while( *p_data == 0xFF &&
 689                            i < tracks[i_track]->i_extra_data )
 690                     {
 691                         i_size2 += *p_data;
 692                         p_data++;
 693                         i++;
 694                     }
 695                     i_size2 += *p_data;
 696                     p_data++;
 697                     i++;
 698                     int i_size3 = tracks[i_track]->i_extra_data - i - i_size1
 699                         - i_size2;
 700                     msg_Dbg( &sys.demuxer, "second theora header size %d", i_size2 );
 701                     msg_Dbg( &sys.demuxer, "third theora header size %d", i_size3 );
 702                     tracks[i_track]->fmt.i_extra = i_size1 + i_size2 + i_size3
 703                         + 6;
 704                     if( i_size1 > 0 && i_size2 > 0 && i_size3 > 0  ) {
 705                         tracks[i_track]->fmt.p_extra =
 706                             malloc( tracks[i_track]->fmt.i_extra );
 707                         uint8_t *p_out = (uint8_t*)tracks[i_track]->fmt.p_extra;
 708                         *p_out++ = (i_size1>>8) & 0xFF;
 709                         *p_out++ = i_size1 & 0xFF;
 710                         memcpy( p_out, p_data, i_size1 );
 711                         p_data += i_size1;
 712                         p_out += i_size1;
 713
 714                         *p_out++ = (i_size2>>8) & 0xFF;
 715                         *p_out++ = i_size2 & 0xFF;
 716                         memcpy( p_out, p_data, i_size2 );
 717                         p_data += i_size2;
 718                         p_out += i_size2;
 719
 720                         *p_out++ = (i_size3>>8) & 0xFF;
 721                         *p_out++ = i_size3 & 0xFF;
 722                         memcpy( p_out, p_data, i_size3 );
 723                         p_data += i_size3;
 724                         p_out += i_size3;
 725                     }
 726                     else
 727                     {
 728                         msg_Err( &sys.demuxer, "inconsistant theora extradata" );
 729                     }
 730                 }
 731                 else {
 732                     msg_Err( &sys.demuxer, "Wrong number of ogg packets with theora headers (%d)", p_data[0] + 1 );
 733                 }
 734             }
 735         }
 736         else if( !strncmp( tracks[i_track]->psz_codec, "V_REAL/RV", 9 ) )
 737         {
 738             if( !strcmp( p_tk->psz_codec, "V_REAL/RV10" ) )
 739                 p_fmt->i_codec = VLC_FOURCC( 'R', 'V', '1', '0' );
 740             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV20" ) )
 741                 p_fmt->i_codec = VLC_FOURCC( 'R', 'V', '2', '0' );
 742             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV30" ) )
 743                 p_fmt->i_codec = VLC_FOURCC( 'R', 'V', '3', '0' );
 744             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV40" ) )
 745                 p_fmt->i_codec = VLC_FOURCC( 'R', 'V', '4', '0' );
 746
 747             if( p_tk->i_extra_data > 26 )
 748             {
 749                 p_fmt->p_extra = malloc( p_tk->i_extra_data - 26 );
 750                 if( p_fmt->p_extra )
 751                 {
 752                     p_fmt->i_extra = p_tk->i_extra_data - 26;
 753                     memcpy( p_fmt->p_extra, &p_tk->p_extra_data[26], p_fmt->i_extra );
 754                 }
 755             }
 756         }
 757         else if( !strncmp( tracks[i_track]->psz_codec, "V_DIRAC", 7 ) )
 758         {
 759             tracks[i_track]->fmt.i_codec = VLC_FOURCC('d', 'r', 'a', 'c' );
 760         }
 761         else if( !strncmp( tracks[i_track]->psz_codec, "V_MPEG4", 7 ) )
 762         {
 763             if( !strcmp( tracks[i_track]->psz_codec, "V_MPEG4/MS/V3" ) )
 764             {
 765                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'D', 'I', 'V', '3' );
 766             }
 767             else if( !strncmp( tracks[i_track]->psz_codec, "V_MPEG4/ISO", 11 ) )
 768             {
 769                 /* A MPEG 4 codec, SP, ASP, AP or AVC */
 770                 if( !strcmp( tracks[i_track]->psz_codec, "V_MPEG4/ISO/AVC" ) )
 771                     tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'a', 'v', 'c', '1' );
 772                 else
 773                     tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'v' );
 774                 tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 775                 tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->i_extra_data );
 776                 memcpy( tracks[i_track]->fmt.p_extra,tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 777             }
 778         }
 779         else if( !strcmp( tracks[i_track]->psz_codec, "V_QUICKTIME" ) )
 780         {
 781             MP4_Box_t *p_box = (MP4_Box_t*)malloc( sizeof( MP4_Box_t ) );
 782             stream_t *p_mp4_stream = stream_MemoryNew( VLC_OBJECT(&sys.demuxer),
 783                                                        tracks[i_track]->p_extra_data,
 784                                                        tracks[i_track]->i_extra_data,
 785                                                        true );
 786             MP4_ReadBoxCommon( p_mp4_stream, p_box );
 787             MP4_ReadBox_sample_vide( p_mp4_stream, p_box );
 788             tracks[i_track]->fmt.i_codec = p_box->i_type;
 789             tracks[i_track]->fmt.video.i_width = p_box->data.p_sample_vide->i_width;
 790             tracks[i_track]->fmt.video.i_height = p_box->data.p_sample_vide->i_height;
 791             tracks[i_track]->fmt.i_extra = p_box->data.p_sample_vide->i_qt_image_description;
 792             tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->fmt.i_extra );
 793             memcpy( tracks[i_track]->fmt.p_extra, p_box->data.p_sample_vide->p_qt_image_description, tracks[i_track]->fmt.i_extra );
 794             MP4_FreeBox_sample_vide( p_box );
 795             stream_Delete( p_mp4_stream );
 796         }
 797         else if( !strcmp( tracks[i_track]->psz_codec, "A_MS/ACM" ) )
 798         {
 799             if( tracks[i_track]->i_extra_data < (int)sizeof( WAVEFORMATEX ) )
 800             {
 801                 msg_Err( &sys.demuxer, "missing/invalid WAVEFORMATEX" );
 802                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 803             }
 804             else
 805             {
 806                 WAVEFORMATEX *p_wf = (WAVEFORMATEX*)tracks[i_track]->p_extra_data;
 807
 808                 wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &tracks[i_track]->fmt.i_codec, NULL );
 809
 810                 tracks[i_track]->fmt.audio.i_channels   = GetWLE( &p_wf->nChannels );
 811                 tracks[i_track]->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
 812                 tracks[i_track]->fmt.i_bitrate    = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
 813                 tracks[i_track]->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );;
 814                 tracks[i_track]->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
 815
 816                 tracks[i_track]->fmt.i_extra            = GetWLE( &p_wf->cbSize );
 817                 if( tracks[i_track]->fmt.i_extra > 0 )
 818                 {
 819                     tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->fmt.i_extra );
 820                     memcpy( tracks[i_track]->fmt.p_extra, &p_wf[1], tracks[i_track]->fmt.i_extra );
 821                 }
 822             }
 823         }
 824         else if( !strcmp( tracks[i_track]->psz_codec, "A_MPEG/L3" ) ||
 825                  !strcmp( tracks[i_track]->psz_codec, "A_MPEG/L2" ) ||
 826                  !strcmp( tracks[i_track]->psz_codec, "A_MPEG/L1" ) )
 827         {
 828             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
 829         }
 830         else if( !strcmp( tracks[i_track]->psz_codec, "A_AC3" ) )
 831         {
 832             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
 833         }
 834         else if( !strcmp( tracks[i_track]->psz_codec, "A_EAC3" ) )
 835         {
 836             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'e', 'a', 'c', '3' );
 837         }
 838         else if( !strcmp( tracks[i_track]->psz_codec, "A_DTS" ) )
 839         {
 840             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'd', 't', 's', ' ' );
 841         }
 842         else if( !strcmp( tracks[i_track]->psz_codec, "A_FLAC" ) )
 843         {
 844             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'f', 'l', 'a', 'c' );
 845             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 846             tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->i_extra_data );
 847             memcpy( tracks[i_track]->fmt.p_extra,tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 848         }
 849         else if( !strcmp( tracks[i_track]->psz_codec, "A_VORBIS" ) )
 850         {
 851             int i, i_offset = 1, i_size[3], i_extra;
 852             uint8_t *p_extra;
 853
 854             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'v', 'o', 'r', 'b' );
 855
 856             /* Split the 3 headers */
 857             if( tracks[i_track]->p_extra_data[0] != 0x02 )
 858                 msg_Err( &sys.demuxer, "invalid vorbis header" );
 859
 860             for( i = 0; i < 2; i++ )
 861             {
 862                 i_size[i] = 0;
 863                 while( i_offset < tracks[i_track]->i_extra_data )
 864                 {
 865                     i_size[i] += tracks[i_track]->p_extra_data[i_offset];
 866                     if( tracks[i_track]->p_extra_data[i_offset++] != 0xff ) break;
 867                 }
 868             }
 869
 870             i_size[0] = __MIN(i_size[0], tracks[i_track]->i_extra_data - i_offset);
 871             i_size[1] = __MIN(i_size[1], tracks[i_track]->i_extra_data -i_offset -i_size[0]);
 872             i_size[2] = tracks[i_track]->i_extra_data - i_offset - i_size[0] - i_size[1];
 873
 874             tracks[i_track]->fmt.i_extra = 3 * 2 + i_size[0] + i_size[1] + i_size[2];
 875             tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->fmt.i_extra );
 876             p_extra = (uint8_t *)tracks[i_track]->fmt.p_extra; i_extra = 0;
 877             for( i = 0; i < 3; i++ )
 878             {
 879                 *(p_extra++) = i_size[i] >> 8;
 880                 *(p_extra++) = i_size[i] & 0xFF;
 881                 memcpy( p_extra, tracks[i_track]->p_extra_data + i_offset + i_extra,
 882                         i_size[i] );
 883                 p_extra += i_size[i];
 884                 i_extra += i_size[i];
 885             }
 886         }
 887         else if( !strncmp( tracks[i_track]->psz_codec, "A_AAC/MPEG2/", strlen( "A_AAC/MPEG2/" ) ) ||
 888                  !strncmp( tracks[i_track]->psz_codec, "A_AAC/MPEG4/", strlen( "A_AAC/MPEG4/" ) ) )
 889         {
 890             int i_profile, i_srate, sbr = 0;
 891             static const unsigned int i_sample_rates[] =
 892             {
 893                     96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
 894                         16000, 12000, 11025, 8000,  7350,  0,     0,     0
 895             };
 896
 897             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
 898             /* create data for faad (MP4DecSpecificDescrTag)*/
 899
 900             if( !strcmp( &tracks[i_track]->psz_codec[12], "MAIN" ) )
 901             {
 902                 i_profile = 0;
 903             }
 904             else if( !strcmp( &tracks[i_track]->psz_codec[12], "LC" ) )
 905             {
 906                 i_profile = 1;
 907             }
 908             else if( !strcmp( &tracks[i_track]->psz_codec[12], "SSR" ) )
 909             {
 910                 i_profile = 2;
 911             }
 912             else if( !strcmp( &tracks[i_track]->psz_codec[12], "LC/SBR" ) )
 913             {
 914                 i_profile = 1;
 915                 sbr = 1;
 916             }
 917             else
 918             {
 919                 i_profile = 3;
 920             }
 921
 922             for( i_srate = 0; i_srate < 13; i_srate++ )
 923             {
 924                 if( i_sample_rates[i_srate] == tracks[i_track]->i_original_rate )
 925                 {
 926                     break;
 927                 }
 928             }
 929             msg_Dbg( &sys.demuxer, "profile=%d srate=%d", i_profile, i_srate );
 930
 931             tracks[i_track]->fmt.i_extra = sbr ? 5 : 2;
 932             tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->fmt.i_extra );
 933             ((uint8_t*)tracks[i_track]->fmt.p_extra)[0] = ((i_profile + 1) << 3) | ((i_srate&0xe) >> 1);
 934             ((uint8_t*)tracks[i_track]->fmt.p_extra)[1] = ((i_srate & 0x1) << 7) | (tracks[i_track]->fmt.audio.i_channels << 3);
 935             if (sbr != 0)
 936             {
 937                 int syncExtensionType = 0x2B7;
 938                 int iDSRI;
 939                 for (iDSRI=0; iDSRI<13; iDSRI++)
 940                     if( i_sample_rates[iDSRI] == tracks[i_track]->fmt.audio.i_rate )
 941                         break;
 942                 ((uint8_t*)tracks[i_track]->fmt.p_extra)[2] = (syncExtensionType >> 3) & 0xFF;
 943                 ((uint8_t*)tracks[i_track]->fmt.p_extra)[3] = ((syncExtensionType & 0x7) << 5) | 5;
 944                 ((uint8_t*)tracks[i_track]->fmt.p_extra)[4] = ((1 & 0x1) << 7) | (iDSRI << 3);
 945             }
 946         }
 947         else if( !strcmp( tracks[i_track]->psz_codec, "A_AAC" ) )
 948         {
 949             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
 950             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 951             tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->i_extra_data );
 952             memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 953         }
 954         else if( !strcmp( tracks[i_track]->psz_codec, "A_WAVPACK4" ) )
 955         {
 956             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'W', 'V', 'P', 'K' );
 957             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 958             tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->i_extra_data );
 959             memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
 960         }
 961         else if( !strcmp( tracks[i_track]->psz_codec, "A_TTA1" ) )
 962         {
 963             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'T', 'T', 'A', '1' );
 964             tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
 965             tracks[i_track]->fmt.p_extra = malloc( 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         else if( !strcmp( tracks[i_track]->psz_codec, "A_PCM/INT/BIG" ) ||
 969                  !strcmp( tracks[i_track]->psz_codec, "A_PCM/INT/LIT" ) ||
 970                  !strcmp( tracks[i_track]->psz_codec, "A_PCM/FLOAT/IEEE" ) )
 971         {
 972             if( !strcmp( tracks[i_track]->psz_codec, "A_PCM/INT/BIG" ) )
 973             {
 974                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
 975             }
 976             else
 977             {
 978                 tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
 979             }
 980             tracks[i_track]->fmt.audio.i_blockalign = ( tracks[i_track]->fmt.audio.i_bitspersample + 7 ) / 8 * tracks[i_track]->fmt.audio.i_channels;
 981         }
 982         /* disabled due to the potential "S_KATE" namespace issue */
 983         else if( !strcmp( tracks[i_track]->psz_codec, "S_KATE" ) )
 984         {
 985             int i, i_offset = 1, *i_size, i_extra, num_headers, size_so_far;
 986             uint8_t *p_extra;
 987
 988             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'k', 'a', 't', 'e' );
 989             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
 990
 991             /* Recover the number of headers to expect */
 992             num_headers = tracks[i_track]->p_extra_data[0]+1;
 993             msg_Dbg( &sys.demuxer, "kate in mkv detected: %d headers in %u bytes",
 994                 num_headers, tracks[i_track]->i_extra_data);
 995
 996             /* this won't overflow the stack as is can allocate only 1020 bytes max */
 997             i_size = (int*)alloca(num_headers*sizeof(int));
 998
 999             /* Split the headers */
1000             size_so_far = 0;
1001             for( i = 0; i < num_headers-1; i++ )
1002             {
1003                 i_size[i] = 0;
1004                 while( i_offset < tracks[i_track]->i_extra_data )
1005                 {
1006                     i_size[i] += tracks[i_track]->p_extra_data[i_offset];
1007                     if( tracks[i_track]->p_extra_data[i_offset++] != 0xff ) break;
1008                 }
1009                 msg_Dbg( &sys.demuxer, "kate header %d is %d bytes", i, i_size[i]);
1010                 size_so_far += i_size[i];
1011             }
1012             i_size[num_headers-1] = tracks[i_track]->i_extra_data - (size_so_far+i_offset);
1013             msg_Dbg( &sys.demuxer, "kate last header (%d) is %d bytes", num_headers-1, i_size[num_headers-1]);
1014
1015             tracks[i_track]->fmt.i_extra = 1 + num_headers * 2 + size_so_far + i_size[num_headers-1];
1016             tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->fmt.i_extra );
1017
1018             p_extra = (uint8_t *)tracks[i_track]->fmt.p_extra;
1019             i_extra = 0;
1020             *(p_extra++) = num_headers;
1021             ++i_extra;
1022             for( i = 0; i < num_headers; i++ )
1023             {
1024                 *(p_extra++) = i_size[i] >> 8;
1025                 *(p_extra++) = i_size[i] & 0xFF;
1026                 memcpy( p_extra, tracks[i_track]->p_extra_data + i_offset + i_extra-1,
1027                         i_size[i] );
1028                 p_extra += i_size[i];
1029                 i_extra += i_size[i];
1030             }
1031         }
1032         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/ASCII" ) )
1033         {
1034             p_fmt->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1035             p_fmt->subs.psz_encoding = NULL; /* Is there a place where it is stored ? */
1036         }
1037         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/UTF8" ) )
1038         {
1039             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1040             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
1041         }
1042         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/USF" ) )
1043         {
1044             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 's', 'f', ' ' );
1045             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
1046             if( tracks[i_track]->i_extra_data )
1047             {
1048                 tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
1049                 tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->i_extra_data );
1050                 memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
1051             }
1052         }
1053         else if( !strcmp( tracks[i_track]->psz_codec, "S_TEXT/SSA" ) ||
1054                  !strcmp( tracks[i_track]->psz_codec, "S_TEXT/ASS" ) ||
1055                  !strcmp( tracks[i_track]->psz_codec, "S_SSA" ) ||
1056                  !strcmp( tracks[i_track]->psz_codec, "S_ASS" ))
1057         {
1058             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 's', 's', 'a', ' ' );
1059             tracks[i_track]->fmt.subs.psz_encoding = strdup( "UTF-8" );
1060             if( tracks[i_track]->i_extra_data )
1061             {
1062                 tracks[i_track]->fmt.i_extra = tracks[i_track]->i_extra_data;
1063                 tracks[i_track]->fmt.p_extra = malloc( tracks[i_track]->i_extra_data );
1064                 memcpy( tracks[i_track]->fmt.p_extra, tracks[i_track]->p_extra_data, tracks[i_track]->i_extra_data );
1065             }
1066         }
1067         else if( !strcmp( tracks[i_track]->psz_codec, "S_VOBSUB" ) )
1068         {
1069             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1070             if( tracks[i_track]->i_extra_data )
1071             {
1072                 char *p_start;
1073                 char *p_buf = (char *)malloc( tracks[i_track]->i_extra_data + 1);
1074                 memcpy( p_buf, tracks[i_track]->p_extra_data , tracks[i_track]->i_extra_data );
1075                 p_buf[tracks[i_track]->i_extra_data] = '\0';
1076
1077                 p_start = strstr( p_buf, "size:" );
1078                 if( sscanf( p_start, "size: %dx%d",
1079                         &tracks[i_track]->fmt.subs.spu.i_original_frame_width, &tracks[i_track]->fmt.subs.spu.i_original_frame_height ) == 2 )
1080                 {
1081                     msg_Dbg( &sys.demuxer, "original frame size vobsubs: %dx%d", tracks[i_track]->fmt.subs.spu.i_original_frame_width, tracks[i_track]->fmt.subs.spu.i_original_frame_height );
1082                 }
1083                 else
1084                 {
1085                     msg_Warn( &sys.demuxer, "reading original frame size for vobsub failed" );
1086                 }
1087                 free( p_buf );
1088             }
1089         }
1090         else if( !strcmp( tracks[i_track]->psz_codec, "B_VOBBTN" ) )
1091         {
1092             tracks[i_track]->fmt.i_cat = NAV_ES;
1093             continue;
1094         }
1095         else if( !strcmp( p_tk->psz_codec, "A_REAL/14_4" ) )
1096         {
1097             p_fmt->i_codec = VLC_FOURCC( '1', '4', '_', '4');
1098             p_fmt->audio.i_channels = 1;
1099             p_fmt->audio.i_rate = 8000;
1100             p_fmt->audio.i_blockalign = 0x14;
1101         }
1102         else
1103         {
1104             msg_Err( &sys.demuxer, "unknown codec id=`%s'", tracks[i_track]->psz_codec );
1105             tracks[i_track]->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
1106         }
1107         if( tracks[i_track]->b_default )
1108         {
1109             tracks[i_track]->fmt.i_priority = 1000;
1110         }
1111
1112         tracks[i_track]->p_es = es_out_Add( sys.demuxer.out, &tracks[i_track]->fmt );
1113
1114         /* Turn on a subtitles track if it has been flagged as default -
1115          * but only do this if no subtitles track has already been engaged,
1116          * either by an earlier 'default track' (??) or by default
1117          * language choice behaviour.
1118          */
1119         if( tracks[i_track]->b_default )
1120         {
1121             es_out_Control( sys.demuxer.out,
1122                             ES_OUT_SET_ES_DEFAULT,
1123                             tracks[i_track]->p_es );
1124         }
1125     }
1126     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_start_time );
1127
1128     sys.i_start_pts = i_start_time;
1129     // reset the stream reading to the first cluster of the segment used
1130     es.I_O().setFilePointer( i_start_pos );
1131
1132     delete ep;
1133     ep = new EbmlParser( &es, segment, &sys.demuxer );
1134
1135     return true;
1136 }
1137
1138 void matroska_segment_c::UnSelect( )
1139 {
1140     size_t i_track;
1141
1142     for( i_track = 0; i_track < tracks.size(); i_track++ )
1143     {
1144         if ( tracks[i_track]->p_es != NULL )
1145         {
1146 //            es_format_Clean( &tracks[i_track]->fmt );
1147             es_out_Del( sys.demuxer.out, tracks[i_track]->p_es );
1148             tracks[i_track]->p_es = NULL;
1149         }
1150     }
1151     delete ep;
1152     ep = NULL;
1153 }
1154
1155 int matroska_segment_c::BlockGet( KaxBlock * & pp_block, KaxSimpleBlock * & pp_simpleblock, int64_t *pi_ref1, int64_t *pi_ref2, int64_t *pi_duration )
1156 {
1157     pp_simpleblock = NULL;
1158     pp_block = NULL;
1159     *pi_ref1  = 0;
1160     *pi_ref2  = 0;
1161
1162     for( ;; )
1163     {
1164         EbmlElement *el = NULL;
1165         int         i_level;
1166
1167         if ( ep == NULL )
1168             return VLC_EGENERIC;
1169
1170         if( pp_simpleblock != NULL || ((el = ep->Get()) == NULL && pp_block != NULL) )
1171         {
1172             /* Check blocks validity to protect againts broken files */
1173             if( BlockFindTrackIndex( NULL, pp_block , pp_simpleblock ) )
1174             {
1175                 delete pp_block;
1176                 pp_simpleblock = NULL;
1177                 pp_block = NULL;
1178                 continue;
1179             }
1180
1181             /* update the index */
1182 #define idx p_indexes[i_index - 1]
1183             if( i_index > 0 && idx.i_time == -1 )
1184             {
1185                 if ( pp_simpleblock != NULL )
1186                     idx.i_time        = pp_simpleblock->GlobalTimecode() / (mtime_t)1000;
1187                 else
1188                     idx.i_time        = (*pp_block).GlobalTimecode() / (mtime_t)1000;
1189                 idx.b_key         = *pi_ref1 == 0 ? true : false;
1190             }
1191 #undef idx
1192             return VLC_SUCCESS;
1193         }
1194
1195         i_level = ep->GetLevel();
1196
1197         if( el == NULL )
1198         {
1199             if( i_level > 1 )
1200             {
1201                 ep->Up();
1202                 continue;
1203             }
1204             msg_Warn( &sys.demuxer, "EOF" );
1205             return VLC_EGENERIC;
1206         }
1207
1208         /* Verify that we are still inside our cluster
1209          * It can happens whith broken files and when seeking
1210          * without index */
1211         if( i_level > 1 )
1212         {
1213             if( cluster && !ep->IsTopPresent( cluster ) )
1214             {
1215                 msg_Warn( &sys.demuxer, "Unexpected escape from current cluster" );
1216                 cluster = NULL;
1217             }
1218             if( !cluster )
1219                 continue;
1220         }
1221
1222         /* do parsing */
1223         switch ( i_level )
1224         {
1225         case 1:
1226             if( MKV_IS_ID( el, KaxCluster ) )
1227             {
1228                 cluster = (KaxCluster*)el;
1229                 i_cluster_pos = cluster->GetElementPosition();
1230
1231                 /* add it to the index */
1232                 if( i_index == 0 ||
1233                     ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
1234                 {
1235                     IndexAppendCluster( cluster );
1236                 }
1237
1238                 // reset silent tracks
1239                 for (size_t i=0; i<tracks.size(); i++)
1240                 {
1241                     tracks[i]->b_silent = false;
1242                 }
1243
1244                 ep->Down();
1245             }
1246             else if( MKV_IS_ID( el, KaxCues ) )
1247             {
1248                 msg_Warn( &sys.demuxer, "find KaxCues FIXME" );
1249                 return VLC_EGENERIC;
1250             }
1251             else
1252             {
1253                 msg_Dbg( &sys.demuxer, "unknown (%s)", typeid( el ).name() );
1254             }
1255             break;
1256         case 2:
1257             if( MKV_IS_ID( el, KaxClusterTimecode ) )
1258             {
1259                 KaxClusterTimecode &ctc = *(KaxClusterTimecode*)el;
1260
1261                 ctc.ReadData( es.I_O(), SCOPE_ALL_DATA );
1262                 cluster->InitTimecode( uint64( ctc ), i_timescale );
1263             }
1264             else if( MKV_IS_ID( el, KaxClusterSilentTracks ) )
1265             {
1266                 ep->Down();
1267             }
1268             else if( MKV_IS_ID( el, KaxBlockGroup ) )
1269             {
1270                 i_block_pos = el->GetElementPosition();
1271                 ep->Down();
1272             }
1273             else if( MKV_IS_ID( el, KaxSimpleBlock ) )
1274             {
1275                 pp_simpleblock = (KaxSimpleBlock*)el;
1276
1277                 pp_simpleblock->ReadData( es.I_O() );
1278                 pp_simpleblock->SetParent( *cluster );
1279             }
1280             break;
1281         case 3:
1282             if( MKV_IS_ID( el, KaxBlock ) )
1283             {
1284                 pp_block = (KaxBlock*)el;
1285
1286                 pp_block->ReadData( es.I_O() );
1287                 pp_block->SetParent( *cluster );
1288
1289                 ep->Keep();
1290             }
1291             else if( MKV_IS_ID( el, KaxBlockDuration ) )
1292             {
1293                 KaxBlockDuration &dur = *(KaxBlockDuration*)el;
1294
1295                 dur.ReadData( es.I_O() );
1296                 *pi_duration = uint64( dur );
1297             }
1298             else if( MKV_IS_ID( el, KaxReferenceBlock ) )
1299             {
1300                 KaxReferenceBlock &ref = *(KaxReferenceBlock*)el;
1301
1302                 ref.ReadData( es.I_O() );
1303                 if( *pi_ref1 == 0 )
1304                 {
1305                     *pi_ref1 = int64( ref ) * cluster->GlobalTimecodeScale();
1306                 }
1307                 else if( *pi_ref2 == 0 )
1308                 {
1309                     *pi_ref2 = int64( ref ) * cluster->GlobalTimecodeScale();
1310                 }
1311             }
1312             else if( MKV_IS_ID( el, KaxClusterSilentTrackNumber ) )
1313             {
1314                 KaxClusterSilentTrackNumber &track_num = *(KaxClusterSilentTrackNumber*)el;
1315                 track_num.ReadData( es.I_O() );
1316                 // find the track
1317                 for (size_t i=0; i<tracks.size(); i++)
1318                 {
1319                     if ( tracks[i]->i_number == uint32(track_num))
1320                     {
1321                         tracks[i]->b_silent = true;
1322                         break;
1323                     }
1324                 }
1325             }
1326             break;
1327         default:
1328             msg_Err( &sys.demuxer, "invalid level = %d", i_level );
1329             return VLC_EGENERIC;
1330         }
1331     }
1332 }
1333