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 #include <vlc_codecs.h>
  36
  37 /* GetFourCC helper */
  38 #define GetFOURCC( p )  __GetFOURCC( (uint8_t*)p )
  39 static vlc_fourcc_t __GetFOURCC( uint8_t *p )
  40 {
  41     return VLC_FOURCC( p[0], p[1], p[2], p[3] );
  42 }
  43
  44 /* Destructor */
  45 matroska_segment_c::~matroska_segment_c()
  46 {
  47     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
  48     {
  49         delete tracks[i_track]->p_compression_data;
  50         es_format_Clean( &tracks[i_track]->fmt );
  51         free( tracks[i_track]->p_extra_data );
  52         free( tracks[i_track]->psz_codec );
  53         delete tracks[i_track];
  54     }
  55
  56     free( psz_writing_application );
  57     free( psz_muxing_application );
  58     free( psz_segment_filename );
  59     free( psz_title );
  60     free( psz_date_utc );
  61     free( p_indexes );
  62
  63     delete ep;
  64     delete segment;
  65     delete p_segment_uid;
  66     delete p_prev_segment_uid;
  67     delete p_next_segment_uid;
  68
  69     std::vector<chapter_edition_c*>::iterator index = stored_editions.begin();
  70     while ( index != stored_editions.end() )
  71     {
  72         delete (*index);
  73         index++;
  74     }
  75     std::vector<chapter_translation_c*>::iterator indext = translations.begin();
  76     while ( indext != translations.end() )
  77     {
  78         delete (*indext);
  79         indext++;
  80     }
  81     std::vector<KaxSegmentFamily*>::iterator indexf = families.begin();
  82     while ( indexf != families.end() )
  83     {
  84         delete (*indexf);
  85         indexf++;
  86    }
  87 }
  88
  89
  90 /*****************************************************************************
  91  * Tools                                                                     *
  92  *****************************************************************************
  93  *  * LoadCues : load the cues element and update index
  94  *  * LoadTags : load ... the tags element
  95  *  * InformationCreate : create all information, load tags if present
  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
 198 #define PARSE_TAG( type ) \
 199     do { \
 200     msg_Dbg( &sys.demuxer, "|   + " type ); \
 201     ep->Down();                             \
 202     while( ( el = ep->Get() ) != NULL )     \
 203     {                                       \
 204         msg_Dbg( &sys.demuxer, "|   |   + Unknown (%s)", typeid( *el ).name() ); \
 205     }                                      \
 206     ep->Up(); } while( 0 )
 207
 208 void matroska_segment_c::LoadTags( KaxTags *tags )
 209 {
 210     /* Master elements */
 211     EbmlParser *ep = new EbmlParser( &es, tags, &sys.demuxer );
 212     EbmlElement *el;
 213
 214     while( ( el = ep->Get() ) != NULL )
 215     {
 216         if( MKV_IS_ID( el, KaxTag ) )
 217         {
 218             msg_Dbg( &sys.demuxer, "+ Tag" );
 219             ep->Down();
 220             while( ( el = ep->Get() ) != NULL )
 221             {
 222                 if( MKV_IS_ID( el, KaxTagTargets ) )
 223                     PARSE_TAG( "Targets" );
 224                 else if( MKV_IS_ID( el, KaxTagGeneral ) )
 225                     PARSE_TAG( "General" );
 226                 else if( MKV_IS_ID( el, KaxTagGenres ) )
 227                     PARSE_TAG( "Genres" );
 228                 else if( MKV_IS_ID( el, KaxTagAudioSpecific ) )
 229                     PARSE_TAG( "Audio Specific" );
 230                 else if( MKV_IS_ID( el, KaxTagImageSpecific ) )
 231                     PARSE_TAG( "Images Specific" );
 232                 else if( MKV_IS_ID( el, KaxTagMultiComment ) )
 233                 {
 234                     msg_Dbg( &sys.demuxer, "|   + Multi Comment" );
 235                 }
 236                 else if( MKV_IS_ID( el, KaxTagMultiCommercial ) )
 237                 {
 238                     msg_Dbg( &sys.demuxer, "|   + Multi Commercial" );
 239                 }
 240                 else if( MKV_IS_ID( el, KaxTagMultiDate ) )
 241                 {
 242                     msg_Dbg( &sys.demuxer, "|   + Multi Date" );
 243                 }
 244                 else if( MKV_IS_ID( el, KaxTagMultiEntity ) )
 245                 {
 246                     msg_Dbg( &sys.demuxer, "|   + Multi Entity" );
 247                 }
 248                 else if( MKV_IS_ID( el, KaxTagMultiIdentifier ) )
 249                 {
 250                     msg_Dbg( &sys.demuxer, "|   + Multi Identifier" );
 251                 }
 252                 else if( MKV_IS_ID( el, KaxTagMultiLegal ) )
 253                 {
 254                     msg_Dbg( &sys.demuxer, "|   + Multi Legal" );
 255                 }
 256                 else if( MKV_IS_ID( el, KaxTagMultiTitle ) )
 257                 {
 258                     msg_Dbg( &sys.demuxer, "|   + Multi Title" );
 259                 }
 260                 else
 261                 {
 262                     msg_Dbg( &sys.demuxer, "|   + LoadTag Unknown (%s)", typeid( *el ).name() );
 263                 }
 264             }
 265             ep->Up();
 266         }
 267         else
 268         {
 269             msg_Dbg( &sys.demuxer, "+ Unknown (%s)", typeid( *el ).name() );
 270         }
 271     }
 272     delete ep;
 273
 274     msg_Dbg( &sys.demuxer, "loading tags done." );
 275 }
 276 #undef PARSE_TAG
 277
 278 /*****************************************************************************
 279  * InformationCreate:
 280  *****************************************************************************/
 281 void matroska_segment_c::InformationCreate( )
 282 {
 283     sys.meta = vlc_meta_New();
 284
 285     if( psz_title )
 286     {
 287         vlc_meta_SetTitle( sys.meta, psz_title );
 288     }
 289     if( psz_date_utc )
 290     {
 291         vlc_meta_SetDate( sys.meta, psz_date_utc );
 292     }
 293 #if 0
 294     if( psz_segment_filename )
 295     {
 296         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 297     }
 298     if( psz_muxing_application )
 299     {
 300         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 301     }
 302     if( psz_writing_application )
 303     {
 304         fprintf( stderr, "***** WARNING: Unhandled meta - Use custom\n" );
 305     }
 306
 307     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
 308     {
 309 //        mkv_track_t *tk = tracks[i_track];
 310 //        vlc_meta_t *mtk = vlc_meta_New();
 311         fprintf( stderr, "***** WARNING: Unhandled child meta\n");
 312     }
 313 #endif
 314 #if 0
 315     if( i_tags_position >= 0 )
 316     {
 317         bool b_seekable;
 318
 319         stream_Control( sys.demuxer.s, STREAM_CAN_FASTSEEK, &b_seekable );
 320         if( b_seekable )
 321         {
 322             LoadTags( );
 323         }
 324     }
 325 #endif
 326 }
 327
 328
 329 /*****************************************************************************
 330  * Misc
 331  *****************************************************************************/
 332
 333 void matroska_segment_c::IndexAppendCluster( KaxCluster *cluster )
 334 {
 335 #define idx p_indexes[i_index]
 336     idx.i_track       = -1;
 337     idx.i_block_number= -1;
 338     idx.i_position    = cluster->GetElementPosition();
 339     idx.i_time        = -1;
 340     idx.b_key         = true;
 341
 342     i_index++;
 343     if( i_index >= i_index_max )
 344     {
 345         i_index_max += 1024;
 346         p_indexes = (mkv_index_t*)xrealloc( p_indexes,
 347                                         sizeof( mkv_index_t ) * i_index_max );
 348     }
 349 #undef idx
 350 }
 351
 352
 353 bool matroska_segment_c::PreloadFamily( const matroska_segment_c & of_segment )
 354 {
 355     if ( b_preloaded )
 356         return false;
 357
 358     for (size_t i=0; i<families.size(); i++)
 359     {
 360         for (size_t j=0; j<of_segment.families.size(); j++)
 361         {
 362             if ( *(families[i]) == *(of_segment.families[j]) )
 363                 return Preload( );
 364         }
 365     }
 366
 367     return false;
 368 }
 369
 370 bool matroska_segment_c::CompareSegmentUIDs( const matroska_segment_c * p_item_a, const matroska_segment_c * p_item_b )
 371 {
 372     EbmlBinary *p_tmp;
 373
 374     if ( p_item_a == NULL || p_item_b == NULL )
 375         return false;
 376
 377     p_tmp = (EbmlBinary *)p_item_a->p_segment_uid;
 378     if ( p_item_b->p_prev_segment_uid != NULL
 379           && *p_tmp == *p_item_b->p_prev_segment_uid )
 380         return true;
 381
 382     p_tmp = (EbmlBinary *)p_item_a->p_next_segment_uid;
 383     if ( !p_tmp )
 384         return false;
 385
 386     if ( p_item_b->p_segment_uid != NULL
 387           && *p_tmp == *p_item_b->p_segment_uid )
 388         return true;
 389
 390     if ( p_item_b->p_prev_segment_uid != NULL
 391           && *p_tmp == *p_item_b->p_prev_segment_uid )
 392         return true;
 393
 394     return false;
 395 }
 396
 397 bool matroska_segment_c::Preload( )
 398 {
 399     if ( b_preloaded )
 400         return false;
 401
 402     EbmlElement *el = NULL;
 403
 404     ep->Reset( &sys.demuxer );
 405
 406     while( ( el = ep->Get() ) != NULL )
 407     {
 408         if( MKV_IS_ID( el, KaxSeekHead ) )
 409         {
 410             /* Multiple allowed */
 411             /* We bail at 10, to prevent possible recursion */
 412             msg_Dbg(  &sys.demuxer, "|   + Seek head" );
 413             if( i_seekhead_count < 10 )
 414             {
 415                 i_seekhead_position = (int64_t) es.I_O().getFilePointer();
 416                 ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 417             }
 418         }
 419         else if( MKV_IS_ID( el, KaxInfo ) )
 420         {
 421             /* Multiple allowed, mandatory */
 422             msg_Dbg(  &sys.demuxer, "|   + Information" );
 423             if( i_info_position < 0 ) // FIXME
 424                 ParseInfo( static_cast<KaxInfo*>( el ) );
 425             i_info_position = (int64_t) es.I_O().getFilePointer();
 426         }
 427         else if( MKV_IS_ID( el, KaxTracks ) )
 428         {
 429             /* Multiple allowed */
 430             msg_Dbg(  &sys.demuxer, "|   + Tracks" );
 431             if( i_tracks_position < 0 ) // FIXME
 432                 ParseTracks( static_cast<KaxTracks*>( el ) );
 433             if ( tracks.size() == 0 )
 434             {
 435                 msg_Err( &sys.demuxer, "No tracks supported" );
 436                 return false;
 437             }
 438             i_tracks_position = (int64_t) es.I_O().getFilePointer();
 439         }
 440         else if( MKV_IS_ID( el, KaxCues ) )
 441         {
 442             msg_Dbg(  &sys.demuxer, "|   + Cues" );
 443             if( i_cues_position < 0 )
 444                 LoadCues( static_cast<KaxCues*>( el ) );
 445             i_cues_position = (int64_t) es.I_O().getFilePointer();
 446         }
 447         else if( MKV_IS_ID( el, KaxCluster ) )
 448         {
 449             msg_Dbg( &sys.demuxer, "|   + Cluster" );
 450
 451             cluster = (KaxCluster*)el;
 452
 453             i_cluster_pos = i_start_pos = cluster->GetElementPosition();
 454             ParseCluster( );
 455
 456             ep->Down();
 457             /* stop pre-parsing the stream */
 458             break;
 459         }
 460         else if( MKV_IS_ID( el, KaxAttachments ) )
 461         {
 462             msg_Dbg( &sys.demuxer, "|   + Attachments" );
 463             if( i_attachments_position < 0 )
 464                 ParseAttachments( static_cast<KaxAttachments*>( el ) );
 465             i_attachments_position = (int64_t) es.I_O().getFilePointer();
 466         }
 467         else if( MKV_IS_ID( el, KaxChapters ) )
 468         {
 469             msg_Dbg( &sys.demuxer, "|   + Chapters" );
 470             if( i_chapters_position < 0 )
 471                 ParseChapters( static_cast<KaxChapters*>( el ) );
 472             i_chapters_position = (int64_t) es.I_O().getFilePointer();
 473         }
 474         else if( MKV_IS_ID( el, KaxTag ) )
 475         {
 476             msg_Dbg( &sys.demuxer, "|   + Tags" );
 477             if( i_tags_position < 0) // FIXME
 478                 ;//LoadTags( static_cast<KaxTags*>( el ) );
 479             i_tags_position = (int64_t) es.I_O().getFilePointer();
 480         }
 481         else
 482             msg_Dbg( &sys.demuxer, "|   + Preload Unknown (%s)", typeid(*el).name() );
 483     }
 484
 485     b_preloaded = true;
 486
 487     return true;
 488 }
 489
 490 /* Here we try to load elements that were found in Seek Heads, but not yet parsed */
 491 bool matroska_segment_c::LoadSeekHeadItem( const EbmlCallbacks & ClassInfos, int64_t i_element_position )
 492 {
 493     int64_t     i_sav_position = (int64_t)es.I_O().getFilePointer();
 494     EbmlElement *el;
 495
 496     es.I_O().setFilePointer( i_element_position, seek_beginning );
 497     el = es.FindNextID( ClassInfos, 0xFFFFFFFFL);
 498
 499     if( el == NULL )
 500     {
 501         msg_Err( &sys.demuxer, "cannot load some cues/chapters/tags etc. (broken seekhead or file)" );
 502         es.I_O().setFilePointer( i_sav_position, seek_beginning );
 503         return false;
 504     }
 505
 506     if( MKV_IS_ID( el, KaxSeekHead ) )
 507     {
 508         /* Multiple allowed */
 509         msg_Dbg( &sys.demuxer, "|   + Seek head" );
 510         if( i_seekhead_count < 10 )
 511         {
 512             i_seekhead_position = i_element_position;
 513             ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 514         }
 515     }
 516     else if( MKV_IS_ID( el, KaxInfo ) ) // FIXME
 517     {
 518         /* Multiple allowed, mandatory */
 519         msg_Dbg( &sys.demuxer, "|   + Information" );
 520         if( i_info_position < 0 )
 521             ParseInfo( static_cast<KaxInfo*>( el ) );
 522         i_info_position = i_element_position;
 523     }
 524     else if( MKV_IS_ID( el, KaxTracks ) ) // FIXME
 525     {
 526         /* Multiple allowed */
 527         msg_Dbg( &sys.demuxer, "|   + Tracks" );
 528         if( i_tracks_position < 0 )
 529             ParseTracks( static_cast<KaxTracks*>( el ) );
 530         if ( tracks.size() == 0 )
 531         {
 532             msg_Err( &sys.demuxer, "No tracks supported" );
 533             delete el;
 534             es.I_O().setFilePointer( i_sav_position, seek_beginning );
 535             return false;
 536         }
 537         i_tracks_position = i_element_position;
 538     }
 539     else if( MKV_IS_ID( el, KaxCues ) )
 540     {
 541         msg_Dbg( &sys.demuxer, "|   + Cues" );
 542         if( i_cues_position < 0 )
 543             LoadCues( static_cast<KaxCues*>( el ) );
 544         i_cues_position = i_element_position;
 545     }
 546     else if( MKV_IS_ID( el, KaxAttachments ) )
 547     {
 548         msg_Dbg( &sys.demuxer, "|   + Attachments" );
 549         if( i_attachments_position < 0 )
 550             ParseAttachments( static_cast<KaxAttachments*>( el ) );
 551         i_attachments_position = i_element_position;
 552     }
 553     else if( MKV_IS_ID( el, KaxChapters ) )
 554     {
 555         msg_Dbg( &sys.demuxer, "|   + Chapters" );
 556         if( i_chapters_position < 0 )
 557             ParseChapters( static_cast<KaxChapters*>( el ) );
 558         i_chapters_position = i_element_position;
 559     }
 560     else if( MKV_IS_ID( el, KaxTag ) ) // FIXME
 561     {
 562         msg_Dbg( &sys.demuxer, "|   + Tags" );
 563         if( i_tags_position < 0 )
 564             ;//LoadTags( static_cast<KaxTags*>( el ) );
 565         i_tags_position = i_element_position;
 566     }
 567     else
 568     {
 569         msg_Dbg( &sys.demuxer, "|   + LoadSeekHeadItem Unknown (%s)", typeid(*el).name() );
 570     }
 571     delete el;
 572
 573     es.I_O().setFilePointer( i_sav_position, seek_beginning );
 574     return true;
 575 }
 576
 577 void matroska_segment_c::Seek( mtime_t i_date, mtime_t i_time_offset, int64_t i_global_position )
 578 {
 579     KaxBlock    *block;
 580     KaxSimpleBlock *simpleblock;
 581     int         i_track_skipping;
 582     int64_t     i_block_duration;
 583     size_t      i_track;
 584     int64_t     i_seek_position = i_start_pos;
 585     int64_t     i_seek_time = i_start_time;
 586
 587     if( i_global_position >= 0 )
 588     {
 589         /* Special case for seeking in files with no cues */
 590         EbmlElement *el = NULL;
 591         es.I_O().setFilePointer( i_start_pos, seek_beginning );
 592         delete ep;
 593         ep = new EbmlParser( &es, segment, &sys.demuxer );
 594         cluster = NULL;
 595
 596         while( ( el = ep->Get() ) != NULL )
 597         {
 598             if( MKV_IS_ID( el, KaxCluster ) )
 599             {
 600                 cluster = (KaxCluster *)el;
 601                 i_cluster_pos = cluster->GetElementPosition();
 602                 if( i_index == 0 ||
 603                         ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
 604                 {
 605                     IndexAppendCluster( cluster );
 606                 }
 607                 if( es.I_O().getFilePointer() >= i_global_position )
 608                 {
 609                     ParseCluster();
 610                     msg_Dbg( &sys.demuxer, "we found a cluster that is in the neighbourhood" );
 611                     return;
 612                 }
 613             }
 614         }
 615         msg_Err( &sys.demuxer, "This file has no cues, and we were unable to seek to the requested position by parsing." );
 616         return;
 617     }
 618
 619     if ( i_index > 0 )
 620     {
 621         int i_idx = 0;
 622
 623         for( ; i_idx < i_index; i_idx++ )
 624         {
 625             if( p_indexes[i_idx].i_time + i_time_offset > i_date )
 626             {
 627                 break;
 628             }
 629         }
 630
 631         if( i_idx > 0 )
 632         {
 633             i_idx--;
 634         }
 635
 636         i_seek_position = p_indexes[i_idx].i_position;
 637         i_seek_time = p_indexes[i_idx].i_time;
 638     }
 639
 640     msg_Dbg( &sys.demuxer, "seek got %"PRId64" (%d%%)",
 641                 i_seek_time, (int)( 100 * i_seek_position / stream_Size( sys.demuxer.s ) ) );
 642
 643     es.I_O().setFilePointer( i_seek_position, seek_beginning );
 644
 645     delete ep;
 646     ep = new EbmlParser( &es, segment, &sys.demuxer );
 647     cluster = NULL;
 648
 649     sys.i_start_pts = i_date;
 650
 651     /* now parse until key frame */
 652     i_track_skipping = 0;
 653     for( i_track = 0; i_track < tracks.size(); i_track++ )
 654     {
 655         if( tracks[i_track]->fmt.i_cat == VIDEO_ES )
 656         {
 657             tracks[i_track]->b_search_keyframe = true;
 658             i_track_skipping++;
 659         }
 660     }
 661     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
 662
 663     while( i_track_skipping > 0 )
 664     {
 665         bool b_key_picture;
 666         bool b_discardable_picture;
 667         if( BlockGet( block, simpleblock, &b_key_picture, &b_discardable_picture, &i_block_duration ) )
 668         {
 669             msg_Warn( &sys.demuxer, "cannot get block EOF?" );
 670
 671             return;
 672         }
 673
 674         for( i_track = 0; i_track < tracks.size(); i_track++ )
 675         {
 676             if( (simpleblock && tracks[i_track]->i_number == simpleblock->TrackNum()) ||
 677                 (block && tracks[i_track]->i_number == block->TrackNum()) )
 678             {
 679                 break;
 680             }
 681         }
 682
 683         if( simpleblock )
 684             sys.i_pts = (sys.i_chapter_time + simpleblock->GlobalTimecode()) / (mtime_t) 1000;
 685         else
 686             sys.i_pts = (sys.i_chapter_time + block->GlobalTimecode()) / (mtime_t) 1000;
 687
 688         if( i_track < tracks.size() )
 689         {
 690             if( sys.i_pts > sys.i_start_pts )
 691             {
 692                 cluster = static_cast<KaxCluster*>(ep->UnGet( i_block_pos, i_cluster_pos ));
 693                 i_track_skipping = 0;
 694             }
 695             else if( tracks[i_track]->fmt.i_cat == VIDEO_ES )
 696             {
 697                 if( b_key_picture && tracks[i_track]->b_search_keyframe )
 698                 {
 699                     tracks[i_track]->b_search_keyframe = false;
 700                     i_track_skipping--;
 701                 }
 702                 if( !tracks[i_track]->b_search_keyframe )
 703                 {
 704                     BlockDecode( &sys.demuxer, block, simpleblock, sys.i_pts, 0, b_key_picture || b_discardable_picture );
 705                 }
 706             }
 707         }
 708
 709         delete block;
 710     }
 711
 712     /* FIXME current ES_OUT_SET_NEXT_DISPLAY_TIME does not work that well if
 713      * the delay is too high. */
 714     if( sys.i_pts + 500*1000 < sys.i_start_pts )
 715     {
 716         sys.i_start_pts = sys.i_pts;
 717
 718         es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, sys.i_start_pts );
 719     }
 720 }
 721
 722
 723 int matroska_segment_c::BlockFindTrackIndex( size_t *pi_track,
 724                                              const KaxBlock *p_block, const KaxSimpleBlock *p_simpleblock )
 725 {
 726     size_t i_track;
 727
 728     for( i_track = 0; i_track < tracks.size(); i_track++ )
 729     {
 730         const mkv_track_t *tk = tracks[i_track];
 731
 732         if( ( p_block != NULL && tk->i_number == p_block->TrackNum() ) ||
 733             ( p_simpleblock != NULL && tk->i_number == p_simpleblock->TrackNum() ) )
 734         {
 735             break;
 736         }
 737     }
 738
 739     if( i_track >= tracks.size() )
 740         return VLC_EGENERIC;
 741
 742     if( pi_track )
 743         *pi_track = i_track;
 744     return VLC_SUCCESS;
 745 }
 746
 747 static inline void fill_extra_data( mkv_track_t *p_tk )
 748 {
 749       p_tk->fmt.i_extra = p_tk->i_extra_data;
 750       p_tk->fmt.p_extra = xmalloc( p_tk->i_extra_data );
 751       memcpy( p_tk->fmt.p_extra, p_tk->p_extra_data, p_tk->i_extra_data );
 752 }
 753
 754 bool matroska_segment_c::Select( mtime_t i_start_time )
 755 {
 756     /* add all es */
 757     msg_Dbg( &sys.demuxer, "found %d es", (int)tracks.size() );
 758     sys.b_pci_packet_set = false;
 759
 760     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
 761     {
 762         mkv_track_t *p_tk = tracks[i_track];
 763         es_format_t *p_fmt = &p_tk->fmt;
 764
 765         if( p_fmt->i_cat == UNKNOWN_ES || !p_tk->psz_codec )
 766         {
 767             msg_Warn( &sys.demuxer, "invalid track[%d, n=%d]", (int)i_track, p_tk->i_number );
 768             p_tk->p_es = NULL;
 769             continue;
 770         }
 771
 772         if( !strcmp( p_tk->psz_codec, "V_MS/VFW/FOURCC" ) )
 773         {
 774             if( p_tk->i_extra_data < (int)sizeof( BITMAPINFOHEADER ) )
 775             {
 776                 msg_Err( &sys.demuxer, "missing/invalid BITMAPINFOHEADER" );
 777                 p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 778             }
 779             else
 780             {
 781                 BITMAPINFOHEADER *p_bih = (BITMAPINFOHEADER*)p_tk->p_extra_data;
 782
 783                 p_tk->fmt.video.i_width = GetDWLE( &p_bih->biWidth );
 784                 p_tk->fmt.video.i_height= GetDWLE( &p_bih->biHeight );
 785                 p_tk->fmt.i_codec       = GetFOURCC( &p_bih->biCompression );
 786
 787                 p_tk->fmt.i_extra       = GetDWLE( &p_bih->biSize ) - sizeof( BITMAPINFOHEADER );
 788                 if( p_tk->fmt.i_extra > 0 )
 789                 {
 790                     p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 791                     memcpy( p_tk->fmt.p_extra, &p_bih[1], p_tk->fmt.i_extra );
 792                 }
 793             }
 794             p_tk->b_dts_only = true;
 795         }
 796         else if( !strcmp( p_tk->psz_codec, "V_MPEG1" ) ||
 797                  !strcmp( p_tk->psz_codec, "V_MPEG2" ) )
 798         {
 799             p_tk->fmt.i_codec = VLC_CODEC_MPGV;
 800         }
 801         else if( !strncmp( p_tk->psz_codec, "V_THEORA", 8 ) )
 802         {
 803             p_tk->fmt.i_codec = VLC_CODEC_THEORA;
 804             fill_extra_data( p_tk );
 805             p_tk->b_pts_only = true;
 806         }
 807         else if( !strncmp( p_tk->psz_codec, "V_REAL/RV", 9 ) )
 808         {
 809             if( !strcmp( p_tk->psz_codec, "V_REAL/RV10" ) )
 810                 p_fmt->i_codec = VLC_CODEC_RV10;
 811             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV20" ) )
 812                 p_fmt->i_codec = VLC_CODEC_RV20;
 813             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV30" ) )
 814                 p_fmt->i_codec = VLC_CODEC_RV30;
 815             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV40" ) )
 816                 p_fmt->i_codec = VLC_CODEC_RV40;
 817
 818             if( p_tk->i_extra_data > 26 )
 819             {
 820                 p_fmt->p_extra = malloc( p_tk->i_extra_data - 26 );
 821                 if( p_fmt->p_extra )
 822                 {
 823                     p_fmt->i_extra = p_tk->i_extra_data - 26;
 824                     memcpy( p_fmt->p_extra, &p_tk->p_extra_data[26], p_fmt->i_extra );
 825                 }
 826             }
 827             p_tk->b_dts_only = true;
 828         }
 829         else if( !strncmp( p_tk->psz_codec, "V_DIRAC", 7 ) )
 830         {
 831             p_tk->fmt.i_codec = VLC_CODEC_DIRAC;
 832         }
 833         else if( !strncmp( p_tk->psz_codec, "V_VP8", 5 ) )
 834         {
 835             p_tk->fmt.i_codec = VLC_CODEC_VP8;
 836             p_tk->b_pts_only = true;
 837         }
 838         else if( !strncmp( p_tk->psz_codec, "V_MPEG4", 7 ) )
 839         {
 840             if( !strcmp( p_tk->psz_codec, "V_MPEG4/MS/V3" ) )
 841             {
 842                 p_tk->fmt.i_codec = VLC_CODEC_DIV3;
 843             }
 844             else if( !strncmp( p_tk->psz_codec, "V_MPEG4/ISO", 11 ) )
 845             {
 846                 /* A MPEG 4 codec, SP, ASP, AP or AVC */
 847                 if( !strcmp( p_tk->psz_codec, "V_MPEG4/ISO/AVC" ) )
 848                     p_tk->fmt.i_codec = VLC_FOURCC( 'a', 'v', 'c', '1' );
 849                 else
 850                     p_tk->fmt.i_codec = VLC_CODEC_MP4V;
 851                 fill_extra_data( p_tk );
 852             }
 853         }
 854         else if( !strcmp( p_tk->psz_codec, "V_QUICKTIME" ) )
 855         {
 856             MP4_Box_t *p_box = (MP4_Box_t*)xmalloc( sizeof( MP4_Box_t ) );
 857             stream_t *p_mp4_stream = stream_MemoryNew( VLC_OBJECT(&sys.demuxer),
 858                                                        p_tk->p_extra_data,
 859                                                        p_tk->i_extra_data,
 860                                                        true );
 861             if( MP4_ReadBoxCommon( p_mp4_stream, p_box ) &&
 862                 MP4_ReadBox_sample_vide( p_mp4_stream, p_box ) )
 863             {
 864                 p_tk->fmt.i_codec = p_box->i_type;
 865                 p_tk->fmt.video.i_width = p_box->data.p_sample_vide->i_width;
 866                 p_tk->fmt.video.i_height = p_box->data.p_sample_vide->i_height;
 867                 p_tk->fmt.i_extra = p_box->data.p_sample_vide->i_qt_image_description;
 868                 p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 869                 memcpy( p_tk->fmt.p_extra, p_box->data.p_sample_vide->p_qt_image_description, p_tk->fmt.i_extra );
 870                 MP4_FreeBox_sample_vide( p_box );
 871             }
 872             else
 873             {
 874                 free( p_box );
 875             }
 876             stream_Delete( p_mp4_stream );
 877         }
 878         else if( !strcmp( p_tk->psz_codec, "A_MS/ACM" ) )
 879         {
 880             if( p_tk->i_extra_data < (int)sizeof( WAVEFORMATEX ) )
 881             {
 882                 msg_Err( &sys.demuxer, "missing/invalid WAVEFORMATEX" );
 883                 p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 884             }
 885             else
 886             {
 887                 WAVEFORMATEX *p_wf = (WAVEFORMATEX*)p_tk->p_extra_data;
 888
 889                 wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &p_tk->fmt.i_codec, NULL );
 890
 891                 p_tk->fmt.audio.i_channels   = GetWLE( &p_wf->nChannels );
 892                 p_tk->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
 893                 p_tk->fmt.i_bitrate    = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
 894                 p_tk->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );;
 895                 p_tk->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
 896
 897                 p_tk->fmt.i_extra            = GetWLE( &p_wf->cbSize );
 898                 if( p_tk->fmt.i_extra > 0 )
 899                 {
 900                     p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 901                     memcpy( p_tk->fmt.p_extra, &p_wf[1], p_tk->fmt.i_extra );
 902                 }
 903             }
 904         }
 905         else if( !strcmp( p_tk->psz_codec, "A_MPEG/L3" ) ||
 906                  !strcmp( p_tk->psz_codec, "A_MPEG/L2" ) ||
 907                  !strcmp( p_tk->psz_codec, "A_MPEG/L1" ) )
 908         {
 909             p_tk->fmt.i_codec = VLC_CODEC_MPGA;
 910         }
 911         else if( !strcmp( p_tk->psz_codec, "A_AC3" ) )
 912         {
 913             p_tk->fmt.i_codec = VLC_CODEC_A52;
 914         }
 915         else if( !strcmp( p_tk->psz_codec, "A_EAC3" ) )
 916         {
 917             p_tk->fmt.i_codec = VLC_CODEC_EAC3;
 918         }
 919         else if( !strcmp( p_tk->psz_codec, "A_DTS" ) )
 920         {
 921             p_tk->fmt.i_codec = VLC_CODEC_DTS;
 922         }
 923         else if( !strcmp( p_tk->psz_codec, "A_MLP" ) )
 924         {
 925             p_tk->fmt.i_codec = VLC_CODEC_MLP;
 926         }
 927         else if( !strcmp( p_tk->psz_codec, "A_TRUEHD" ) )
 928         {
 929             /* FIXME when more samples arrive */
 930             p_tk->fmt.i_codec = VLC_CODEC_TRUEHD;
 931             p_fmt->b_packetized = false;
 932         }
 933         else if( !strcmp( p_tk->psz_codec, "A_FLAC" ) )
 934         {
 935             p_tk->fmt.i_codec = VLC_CODEC_FLAC;
 936             fill_extra_data( p_tk );
 937         }
 938         else if( !strcmp( p_tk->psz_codec, "A_VORBIS" ) )
 939         {
 940             p_tk->fmt.i_codec = VLC_CODEC_VORBIS;
 941             fill_extra_data( p_tk );
 942         }
 943         else if( !strncmp( p_tk->psz_codec, "A_AAC/MPEG2/", strlen( "A_AAC/MPEG2/" ) ) ||
 944                  !strncmp( p_tk->psz_codec, "A_AAC/MPEG4/", strlen( "A_AAC/MPEG4/" ) ) )
 945         {
 946             int i_profile, i_srate, sbr = 0;
 947             static const unsigned int i_sample_rates[] =
 948             {
 949                     96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
 950                     16000, 12000, 11025,  8000,  7350,     0,     0,     0
 951             };
 952
 953             p_tk->fmt.i_codec = VLC_CODEC_MP4A;
 954             /* create data for faad (MP4DecSpecificDescrTag)*/
 955
 956             if( !strcmp( &p_tk->psz_codec[12], "MAIN" ) )
 957             {
 958                 i_profile = 0;
 959             }
 960             else if( !strcmp( &p_tk->psz_codec[12], "LC" ) )
 961             {
 962                 i_profile = 1;
 963             }
 964             else if( !strcmp( &p_tk->psz_codec[12], "SSR" ) )
 965             {
 966                 i_profile = 2;
 967             }
 968             else if( !strcmp( &p_tk->psz_codec[12], "LC/SBR" ) )
 969             {
 970                 i_profile = 1;
 971                 sbr = 1;
 972             }
 973             else
 974             {
 975                 i_profile = 3;
 976             }
 977
 978             for( i_srate = 0; i_srate < 13; i_srate++ )
 979             {
 980                 if( i_sample_rates[i_srate] == p_tk->i_original_rate )
 981                 {
 982                     break;
 983                 }
 984             }
 985             msg_Dbg( &sys.demuxer, "profile=%d srate=%d", i_profile, i_srate );
 986
 987             p_tk->fmt.i_extra = sbr ? 5 : 2;
 988             p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 989             ((uint8_t*)p_tk->fmt.p_extra)[0] = ((i_profile + 1) << 3) | ((i_srate&0xe) >> 1);
 990             ((uint8_t*)p_tk->fmt.p_extra)[1] = ((i_srate & 0x1) << 7) | (p_tk->fmt.audio.i_channels << 3);
 991             if (sbr != 0)
 992             {
 993                 int syncExtensionType = 0x2B7;
 994                 int iDSRI;
 995                 for (iDSRI=0; iDSRI<13; iDSRI++)
 996                     if( i_sample_rates[iDSRI] == p_tk->fmt.audio.i_rate )
 997                         break;
 998                 ((uint8_t*)p_tk->fmt.p_extra)[2] = (syncExtensionType >> 3) & 0xFF;
 999                 ((uint8_t*)p_tk->fmt.p_extra)[3] = ((syncExtensionType & 0x7) << 5) | 5;
1000                 ((uint8_t*)p_tk->fmt.p_extra)[4] = ((1 & 0x1) << 7) | (iDSRI << 3);
1001             }
1002         }
1003         else if( !strcmp( p_tk->psz_codec, "A_AAC" ) )
1004         {
1005             p_tk->fmt.i_codec = VLC_CODEC_MP4A;
1006             fill_extra_data( p_tk );
1007         }
1008         else if( !strcmp( p_tk->psz_codec, "A_WAVPACK4" ) )
1009         {
1010             p_tk->fmt.i_codec = VLC_CODEC_WAVPACK;
1011             fill_extra_data( p_tk );
1012         }
1013         else if( !strcmp( p_tk->psz_codec, "A_TTA1" ) )
1014         {
1015             p_fmt->i_codec = VLC_CODEC_TTA;
1016             if( p_tk->i_extra_data > 0 )
1017             {
1018                 fill_extra_data( p_tk );
1019             }
1020             else
1021             {
1022                 p_fmt->i_extra = 30;
1023                 p_fmt->p_extra = xmalloc( p_fmt->i_extra );
1024                 uint8_t *p_extra = (uint8_t*)p_fmt->p_extra;
1025                 memcpy( &p_extra[ 0], "TTA1", 4 );
1026                 SetWLE( &p_extra[ 4], 1 );
1027                 SetWLE( &p_extra[ 6], p_fmt->audio.i_channels );
1028                 SetWLE( &p_extra[ 8], p_fmt->audio.i_bitspersample );
1029                 SetDWLE( &p_extra[10], p_fmt->audio.i_rate );
1030                 SetDWLE( &p_extra[14], 0xffffffff );
1031                 memset( &p_extra[18], 0, 30  - 18 );
1032             }
1033         }
1034         else if( !strcmp( p_tk->psz_codec, "A_PCM/INT/BIG" ) ||
1035                  !strcmp( p_tk->psz_codec, "A_PCM/INT/LIT" ) ||
1036                  !strcmp( p_tk->psz_codec, "A_PCM/FLOAT/IEEE" ) )
1037         {
1038             if( !strcmp( p_tk->psz_codec, "A_PCM/INT/BIG" ) )
1039             {
1040                 p_tk->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1041             }
1042             else
1043             {
1044                 p_tk->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1045             }
1046             p_tk->fmt.audio.i_blockalign = ( p_tk->fmt.audio.i_bitspersample + 7 ) / 8 * p_tk->fmt.audio.i_channels;
1047         }
1048         else if( !strncmp( p_tk->psz_codec, "A_REAL/", 7 ) )
1049         {
1050             if( !strcmp( p_tk->psz_codec, "A_REAL/COOK" ) )
1051                 p_tk->fmt.i_codec = VLC_CODEC_COOK;
1052             else if( !strcmp( p_tk->psz_codec, "A_REAL/ATRC" ) )
1053                 p_tk->fmt.i_codec = VLC_CODEC_ATRAC3;
1054             else if( !strcmp( p_tk->psz_codec, "A_REAL/28_8" ) )
1055                 p_tk->fmt.i_codec = VLC_CODEC_RA_288;
1056             /* FIXME 14_4, RALF and SIPR */
1057             fill_extra_data( p_tk );
1058         }
1059         else if( !strcmp( p_tk->psz_codec, "A_REAL/14_4" ) )
1060         {
1061             p_fmt->i_codec = VLC_CODEC_RA_144;
1062             p_fmt->audio.i_channels = 1;
1063             p_fmt->audio.i_rate = 8000;
1064             p_fmt->audio.i_blockalign = 0x14;
1065         }
1066         /* disabled due to the potential "S_KATE" namespace issue */
1067         else if( !strcmp( p_tk->psz_codec, "S_KATE" ) )
1068         {
1069             int i, i_offset = 1, i_extra, num_headers, size_so_far;
1070             uint8_t *p_extra;
1071
1072             p_tk->fmt.i_codec = VLC_CODEC_KATE;
1073             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1074
1075             fill_extra_data( p_tk );
1076         }
1077         else if( !strcmp( p_tk->psz_codec, "S_TEXT/ASCII" ) )
1078         {
1079             p_fmt->i_codec = VLC_CODEC_SUBT;
1080             p_fmt->subs.psz_encoding = NULL; /* Is there a place where it is stored ? */
1081         }
1082         else if( !strcmp( p_tk->psz_codec, "S_TEXT/UTF8" ) )
1083         {
1084             p_tk->fmt.i_codec = VLC_CODEC_SUBT;
1085             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1086         }
1087         else if( !strcmp( p_tk->psz_codec, "S_TEXT/USF" ) )
1088         {
1089             p_tk->fmt.i_codec = VLC_FOURCC( 'u', 's', 'f', ' ' );
1090             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1091             if( p_tk->i_extra_data )
1092             {
1093                 fill_extra_data( p_tk );
1094             }
1095         }
1096         else if( !strcmp( p_tk->psz_codec, "S_TEXT/SSA" ) ||
1097                  !strcmp( p_tk->psz_codec, "S_TEXT/ASS" ) ||
1098                  !strcmp( p_tk->psz_codec, "S_SSA" ) ||
1099                  !strcmp( p_tk->psz_codec, "S_ASS" ))
1100         {
1101             p_tk->fmt.i_codec = VLC_CODEC_SSA;
1102             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1103             if( p_tk->i_extra_data )
1104             {
1105                 fill_extra_data( p_tk );
1106             }
1107         }
1108         else if( !strcmp( p_tk->psz_codec, "S_VOBSUB" ) )
1109         {
1110             p_tk->fmt.i_codec = VLC_CODEC_SPU;
1111             if( p_tk->i_extra_data )
1112             {
1113                 char *psz_start;
1114                 char *psz_buf = (char *)malloc( p_tk->i_extra_data + 1);
1115                 if( psz_buf != NULL )
1116                 {
1117                     memcpy( psz_buf, p_tk->p_extra_data , p_tk->i_extra_data );
1118                     psz_buf[p_tk->i_extra_data] = '\0';
1119
1120                     psz_start = strstr( psz_buf, "size:" );
1121                     if( psz_start &&
1122                         vobsub_size_parse( psz_start,
1123                                            &p_tk->fmt.subs.spu.i_original_frame_width,
1124                                            &p_tk->fmt.subs.spu.i_original_frame_height ) == VLC_SUCCESS )
1125                     {
1126                         msg_Dbg( &sys.demuxer, "original frame size vobsubs: %dx%d",
1127                                  p_tk->fmt.subs.spu.i_original_frame_width,
1128                                  p_tk->fmt.subs.spu.i_original_frame_height );
1129                     }
1130                     else
1131                     {
1132                         msg_Warn( &sys.demuxer, "reading original frame size for vobsub failed" );
1133                     }
1134
1135                     psz_start = strstr( psz_buf, "palette:" );
1136                     if( psz_start &&
1137                         vobsub_palette_parse( psz_start, &p_tk->fmt.subs.spu.palette[1] ) == VLC_SUCCESS )
1138                     {
1139                         p_tk->fmt.subs.spu.palette[0] =  0xBeef;
1140                         msg_Dbg( &sys.demuxer, "vobsub palette read" );
1141                     }
1142                     else
1143                     {
1144                         msg_Warn( &sys.demuxer, "reading original palette failed" );
1145                     }
1146                     free( psz_buf );
1147                 }
1148             }
1149         }
1150         else if( !strcmp( p_tk->psz_codec, "S_HDMV/PGS" ) )
1151         {
1152             p_tk->fmt.i_codec = VLC_CODEC_BD_PG;
1153         }
1154         else if( !strcmp( p_tk->psz_codec, "B_VOBBTN" ) )
1155         {
1156             p_tk->fmt.i_cat = NAV_ES;
1157             continue;
1158         }
1159         else
1160         {
1161             msg_Err( &sys.demuxer, "unknown codec id=`%s'", p_tk->psz_codec );
1162             p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
1163         }
1164         if( p_tk->b_default )
1165         {
1166             p_tk->fmt.i_priority = 1000;
1167         }
1168
1169         p_tk->p_es = es_out_Add( sys.demuxer.out, &p_tk->fmt );
1170
1171         /* Turn on a subtitles track if it has been flagged as default -
1172          * but only do this if no subtitles track has already been engaged,
1173          * either by an earlier 'default track' (??) or by default
1174          * language choice behaviour.
1175          */
1176         if( p_tk->b_default )
1177         {
1178             es_out_Control( sys.demuxer.out,
1179                             ES_OUT_SET_ES_DEFAULT,
1180                             p_tk->p_es );
1181         }
1182     }
1183     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_start_time );
1184
1185     sys.i_start_pts = i_start_time;
1186     // reset the stream reading to the first cluster of the segment used
1187     es.I_O().setFilePointer( i_start_pos );
1188
1189     delete ep;
1190     ep = new EbmlParser( &es, segment, &sys.demuxer );
1191
1192     return true;
1193 }
1194
1195 void matroska_segment_c::UnSelect( )
1196 {
1197     size_t i_track;
1198
1199     for( i_track = 0; i_track < tracks.size(); i_track++ )
1200     {
1201         if ( tracks[i_track]->p_es != NULL )
1202         {
1203 //            es_format_Clean( &tracks[i_track]->fmt );
1204             es_out_Del( sys.demuxer.out, tracks[i_track]->p_es );
1205             tracks[i_track]->p_es = NULL;
1206         }
1207     }
1208     delete ep;
1209     ep = NULL;
1210 }
1211
1212 int matroska_segment_c::BlockGet( KaxBlock * & pp_block, KaxSimpleBlock * & pp_simpleblock, bool *pb_key_picture, bool *pb_discardable_picture, int64_t *pi_duration )
1213 {
1214     pp_simpleblock = NULL;
1215     pp_block = NULL;
1216
1217     *pb_key_picture         = true;
1218     *pb_discardable_picture = false;
1219
1220     for( ;; )
1221     {
1222         EbmlElement *el = NULL;
1223         int         i_level;
1224
1225         if ( ep == NULL )
1226             return VLC_EGENERIC;
1227
1228         if( pp_simpleblock != NULL || ((el = ep->Get()) == NULL && pp_block != NULL) )
1229         {
1230             /* Check blocks validity to protect againts broken files */
1231             if( BlockFindTrackIndex( NULL, pp_block , pp_simpleblock ) )
1232             {
1233                 delete pp_block;
1234                 pp_simpleblock = NULL;
1235                 pp_block = NULL;
1236                 continue;
1237             }
1238             if( pp_simpleblock != NULL )
1239             {
1240                 *pb_key_picture         = pp_simpleblock->IsKeyframe();
1241                 *pb_discardable_picture = pp_simpleblock->IsDiscardable();
1242             }
1243
1244             /* update the index */
1245 #define idx p_indexes[i_index - 1]
1246             if( i_index > 0 && idx.i_time == -1 )
1247             {
1248                 if ( pp_simpleblock != NULL )
1249                     idx.i_time        = pp_simpleblock->GlobalTimecode() / (mtime_t)1000;
1250                 else
1251                     idx.i_time        = (*pp_block).GlobalTimecode() / (mtime_t)1000;
1252                 idx.b_key         = *pb_key_picture;
1253             }
1254 #undef idx
1255             return VLC_SUCCESS;
1256         }
1257
1258         i_level = ep->GetLevel();
1259
1260         if( el == NULL )
1261         {
1262             if( i_level > 1 )
1263             {
1264                 ep->Up();
1265                 continue;
1266             }
1267             msg_Warn( &sys.demuxer, "EOF" );
1268             return VLC_EGENERIC;
1269         }
1270
1271         /* Verify that we are still inside our cluster
1272          * It can happens whith broken files and when seeking
1273          * without index */
1274         if( i_level > 1 )
1275         {
1276             if( cluster && !ep->IsTopPresent( cluster ) )
1277             {
1278                 msg_Warn( &sys.demuxer, "Unexpected escape from current cluster" );
1279                 cluster = NULL;
1280             }
1281             if( !cluster )
1282                 continue;
1283         }
1284
1285         /* do parsing */
1286         switch ( i_level )
1287         {
1288         case 1:
1289             if( MKV_IS_ID( el, KaxCluster ) )
1290             {
1291                 cluster = (KaxCluster*)el;
1292                 i_cluster_pos = cluster->GetElementPosition();
1293
1294                 /* add it to the index */
1295                 if( i_index == 0 ||
1296                     ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
1297                 {
1298                     IndexAppendCluster( cluster );
1299                 }
1300
1301                 // reset silent tracks
1302                 for (size_t i=0; i<tracks.size(); i++)
1303                 {
1304                     tracks[i]->b_silent = false;
1305                 }
1306
1307                 ep->Down();
1308             }
1309             else if( MKV_IS_ID( el, KaxCues ) )
1310             {
1311                 msg_Warn( &sys.demuxer, "find KaxCues FIXME" );
1312                 return VLC_EGENERIC;
1313             }
1314             else
1315             {
1316                 msg_Dbg( &sys.demuxer, "unknown (%s)", typeid( el ).name() );
1317             }
1318             break;
1319         case 2:
1320             if( MKV_IS_ID( el, KaxClusterTimecode ) )
1321             {
1322                 KaxClusterTimecode &ctc = *(KaxClusterTimecode*)el;
1323
1324                 ctc.ReadData( es.I_O(), SCOPE_ALL_DATA );
1325                 cluster->InitTimecode( uint64( ctc ), i_timescale );
1326             }
1327             else if( MKV_IS_ID( el, KaxClusterSilentTracks ) )
1328             {
1329                 ep->Down();
1330             }
1331             else if( MKV_IS_ID( el, KaxBlockGroup ) )
1332             {
1333                 i_block_pos = el->GetElementPosition();
1334                 ep->Down();
1335             }
1336             else if( MKV_IS_ID( el, KaxSimpleBlock ) )
1337             {
1338                 pp_simpleblock = (KaxSimpleBlock*)el;
1339
1340                 pp_simpleblock->ReadData( es.I_O() );
1341                 pp_simpleblock->SetParent( *cluster );
1342             }
1343             break;
1344         case 3:
1345             if( MKV_IS_ID( el, KaxBlock ) )
1346             {
1347                 pp_block = (KaxBlock*)el;
1348
1349                 pp_block->ReadData( es.I_O() );
1350                 pp_block->SetParent( *cluster );
1351
1352                 ep->Keep();
1353             }
1354             else if( MKV_IS_ID( el, KaxBlockDuration ) )
1355             {
1356                 KaxBlockDuration &dur = *(KaxBlockDuration*)el;
1357
1358                 dur.ReadData( es.I_O() );
1359                 *pi_duration = uint64( dur );
1360             }
1361             else if( MKV_IS_ID( el, KaxReferenceBlock ) )
1362             {
1363                 KaxReferenceBlock &ref = *(KaxReferenceBlock*)el;
1364
1365                 ref.ReadData( es.I_O() );
1366
1367                 if( *pb_key_picture )
1368                     *pb_key_picture = false;
1369                 else if( int64( ref ) > 0 )
1370                     *pb_discardable_picture = true;
1371             }
1372             else if( MKV_IS_ID( el, KaxClusterSilentTrackNumber ) )
1373             {
1374                 KaxClusterSilentTrackNumber &track_num = *(KaxClusterSilentTrackNumber*)el;
1375                 track_num.ReadData( es.I_O() );
1376                 // find the track
1377                 for (size_t i=0; i<tracks.size(); i++)
1378                 {
1379                     if ( tracks[i]->i_number == uint32(track_num))
1380                     {
1381                         tracks[i]->b_silent = true;
1382                         break;
1383                     }
1384                 }
1385             }
1386             break;
1387         default:
1388             msg_Err( &sys.demuxer, "invalid level = %d", i_level );
1389             return VLC_EGENERIC;
1390         }
1391     }
1392 }
1393