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 if( MKV_IS_ID( el, EbmlVoid ) )
 482             msg_Dbg( &sys.demuxer, "|   + Void" );
 483         else
 484             msg_Dbg( &sys.demuxer, "|   + Preload Unknown (%s)", typeid(*el).name() );
 485     }
 486
 487     b_preloaded = true;
 488
 489     return true;
 490 }
 491
 492 /* Here we try to load elements that were found in Seek Heads, but not yet parsed */
 493 bool matroska_segment_c::LoadSeekHeadItem( const EbmlCallbacks & ClassInfos, int64_t i_element_position )
 494 {
 495     int64_t     i_sav_position = (int64_t)es.I_O().getFilePointer();
 496     EbmlElement *el;
 497
 498     es.I_O().setFilePointer( i_element_position, seek_beginning );
 499     el = es.FindNextID( ClassInfos, 0xFFFFFFFFL);
 500
 501     if( el == NULL )
 502     {
 503         msg_Err( &sys.demuxer, "cannot load some cues/chapters/tags etc. (broken seekhead or file)" );
 504         es.I_O().setFilePointer( i_sav_position, seek_beginning );
 505         return false;
 506     }
 507
 508     if( MKV_IS_ID( el, KaxSeekHead ) )
 509     {
 510         /* Multiple allowed */
 511         msg_Dbg( &sys.demuxer, "|   + Seek head" );
 512         if( i_seekhead_count < 10 )
 513         {
 514             i_seekhead_position = i_element_position;
 515             ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 516         }
 517     }
 518     else if( MKV_IS_ID( el, KaxInfo ) ) // FIXME
 519     {
 520         /* Multiple allowed, mandatory */
 521         msg_Dbg( &sys.demuxer, "|   + Information" );
 522         if( i_info_position < 0 )
 523             ParseInfo( static_cast<KaxInfo*>( el ) );
 524         i_info_position = i_element_position;
 525     }
 526     else if( MKV_IS_ID( el, KaxTracks ) ) // FIXME
 527     {
 528         /* Multiple allowed */
 529         msg_Dbg( &sys.demuxer, "|   + Tracks" );
 530         if( i_tracks_position < 0 )
 531             ParseTracks( static_cast<KaxTracks*>( el ) );
 532         if ( tracks.size() == 0 )
 533         {
 534             msg_Err( &sys.demuxer, "No tracks supported" );
 535             delete el;
 536             es.I_O().setFilePointer( i_sav_position, seek_beginning );
 537             return false;
 538         }
 539         i_tracks_position = i_element_position;
 540     }
 541     else if( MKV_IS_ID( el, KaxCues ) )
 542     {
 543         msg_Dbg( &sys.demuxer, "|   + Cues" );
 544         if( i_cues_position < 0 )
 545             LoadCues( static_cast<KaxCues*>( el ) );
 546         i_cues_position = i_element_position;
 547     }
 548     else if( MKV_IS_ID( el, KaxAttachments ) )
 549     {
 550         msg_Dbg( &sys.demuxer, "|   + Attachments" );
 551         if( i_attachments_position < 0 )
 552             ParseAttachments( static_cast<KaxAttachments*>( el ) );
 553         i_attachments_position = i_element_position;
 554     }
 555     else if( MKV_IS_ID( el, KaxChapters ) )
 556     {
 557         msg_Dbg( &sys.demuxer, "|   + Chapters" );
 558         if( i_chapters_position < 0 )
 559             ParseChapters( static_cast<KaxChapters*>( el ) );
 560         i_chapters_position = i_element_position;
 561     }
 562     else if( MKV_IS_ID( el, KaxTag ) ) // FIXME
 563     {
 564         msg_Dbg( &sys.demuxer, "|   + Tags" );
 565         if( i_tags_position < 0 )
 566             ;//LoadTags( static_cast<KaxTags*>( el ) );
 567         i_tags_position = i_element_position;
 568     }
 569     else
 570     {
 571         msg_Dbg( &sys.demuxer, "|   + LoadSeekHeadItem Unknown (%s)", typeid(*el).name() );
 572     }
 573     delete el;
 574
 575     es.I_O().setFilePointer( i_sav_position, seek_beginning );
 576     return true;
 577 }
 578
 579 void matroska_segment_c::Seek( mtime_t i_date, mtime_t i_time_offset, int64_t i_global_position )
 580 {
 581     KaxBlock    *block;
 582     KaxSimpleBlock *simpleblock;
 583     int         i_track_skipping;
 584     int64_t     i_block_duration;
 585     size_t      i_track;
 586     int64_t     i_seek_position = i_start_pos;
 587     int64_t     i_seek_time = i_start_time;
 588
 589     if( i_global_position >= 0 )
 590     {
 591         /* Special case for seeking in files with no cues */
 592         EbmlElement *el = NULL;
 593         es.I_O().setFilePointer( i_start_pos, seek_beginning );
 594         delete ep;
 595         ep = new EbmlParser( &es, segment, &sys.demuxer );
 596         cluster = NULL;
 597
 598         while( ( el = ep->Get() ) != NULL )
 599         {
 600             if( MKV_IS_ID( el, KaxCluster ) )
 601             {
 602                 cluster = (KaxCluster *)el;
 603                 i_cluster_pos = cluster->GetElementPosition();
 604                 if( i_index == 0 ||
 605                         ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
 606                 {
 607                     IndexAppendCluster( cluster );
 608                 }
 609                 if( es.I_O().getFilePointer() >= i_global_position )
 610                 {
 611                     ParseCluster();
 612                     msg_Dbg( &sys.demuxer, "we found a cluster that is in the neighbourhood" );
 613                     return;
 614                 }
 615             }
 616         }
 617         msg_Err( &sys.demuxer, "This file has no cues, and we were unable to seek to the requested position by parsing." );
 618         return;
 619     }
 620
 621     if ( i_index > 0 )
 622     {
 623         int i_idx = 0;
 624
 625         for( ; i_idx < i_index; i_idx++ )
 626         {
 627             if( p_indexes[i_idx].i_time + i_time_offset > i_date )
 628             {
 629                 break;
 630             }
 631         }
 632
 633         if( i_idx > 0 )
 634         {
 635             i_idx--;
 636         }
 637
 638         i_seek_position = p_indexes[i_idx].i_position;
 639         i_seek_time = p_indexes[i_idx].i_time;
 640     }
 641
 642     msg_Dbg( &sys.demuxer, "seek got %"PRId64" (%d%%)",
 643                 i_seek_time, (int)( 100 * i_seek_position / stream_Size( sys.demuxer.s ) ) );
 644
 645     es.I_O().setFilePointer( i_seek_position, seek_beginning );
 646
 647     delete ep;
 648     ep = new EbmlParser( &es, segment, &sys.demuxer );
 649     cluster = NULL;
 650
 651     sys.i_start_pts = i_date;
 652
 653     /* now parse until key frame */
 654     i_track_skipping = 0;
 655     for( i_track = 0; i_track < tracks.size(); i_track++ )
 656     {
 657         if( tracks[i_track]->fmt.i_cat == VIDEO_ES )
 658         {
 659             tracks[i_track]->b_search_keyframe = true;
 660             i_track_skipping++;
 661         }
 662     }
 663     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
 664
 665     while( i_track_skipping > 0 )
 666     {
 667         bool b_key_picture;
 668         bool b_discardable_picture;
 669         if( BlockGet( block, simpleblock, &b_key_picture, &b_discardable_picture, &i_block_duration ) )
 670         {
 671             msg_Warn( &sys.demuxer, "cannot get block EOF?" );
 672
 673             return;
 674         }
 675
 676         for( i_track = 0; i_track < tracks.size(); i_track++ )
 677         {
 678             if( (simpleblock && tracks[i_track]->i_number == simpleblock->TrackNum()) ||
 679                 (block && tracks[i_track]->i_number == block->TrackNum()) )
 680             {
 681                 break;
 682             }
 683         }
 684
 685         if( simpleblock )
 686             sys.i_pts = (sys.i_chapter_time + simpleblock->GlobalTimecode()) / (mtime_t) 1000;
 687         else
 688             sys.i_pts = (sys.i_chapter_time + block->GlobalTimecode()) / (mtime_t) 1000;
 689
 690         if( i_track < tracks.size() )
 691         {
 692             if( sys.i_pts > sys.i_start_pts )
 693             {
 694                 cluster = static_cast<KaxCluster*>(ep->UnGet( i_block_pos, i_cluster_pos ));
 695                 i_track_skipping = 0;
 696             }
 697             else if( tracks[i_track]->fmt.i_cat == VIDEO_ES )
 698             {
 699                 if( b_key_picture && tracks[i_track]->b_search_keyframe )
 700                 {
 701                     tracks[i_track]->b_search_keyframe = false;
 702                     i_track_skipping--;
 703                 }
 704                 if( !tracks[i_track]->b_search_keyframe )
 705                 {
 706                     BlockDecode( &sys.demuxer, block, simpleblock, sys.i_pts, 0, b_key_picture || b_discardable_picture );
 707                 }
 708             }
 709         }
 710
 711         delete block;
 712     }
 713
 714     /* FIXME current ES_OUT_SET_NEXT_DISPLAY_TIME does not work that well if
 715      * the delay is too high. */
 716     if( sys.i_pts + 500*1000 < sys.i_start_pts )
 717     {
 718         sys.i_start_pts = sys.i_pts;
 719
 720         es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, sys.i_start_pts );
 721     }
 722 }
 723
 724
 725 int matroska_segment_c::BlockFindTrackIndex( size_t *pi_track,
 726                                              const KaxBlock *p_block, const KaxSimpleBlock *p_simpleblock )
 727 {
 728     size_t i_track;
 729
 730     for( i_track = 0; i_track < tracks.size(); i_track++ )
 731     {
 732         const mkv_track_t *tk = tracks[i_track];
 733
 734         if( ( p_block != NULL && tk->i_number == p_block->TrackNum() ) ||
 735             ( p_simpleblock != NULL && tk->i_number == p_simpleblock->TrackNum() ) )
 736         {
 737             break;
 738         }
 739     }
 740
 741     if( i_track >= tracks.size() )
 742         return VLC_EGENERIC;
 743
 744     if( pi_track )
 745         *pi_track = i_track;
 746     return VLC_SUCCESS;
 747 }
 748
 749 static inline void fill_extra_data( mkv_track_t *p_tk )
 750 {
 751       p_tk->fmt.i_extra = p_tk->i_extra_data;
 752       p_tk->fmt.p_extra = xmalloc( p_tk->i_extra_data );
 753       memcpy( p_tk->fmt.p_extra, p_tk->p_extra_data, p_tk->i_extra_data );
 754 }
 755
 756 bool matroska_segment_c::Select( mtime_t i_start_time )
 757 {
 758     /* add all es */
 759     msg_Dbg( &sys.demuxer, "found %d es", (int)tracks.size() );
 760     sys.b_pci_packet_set = false;
 761
 762     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
 763     {
 764         mkv_track_t *p_tk = tracks[i_track];
 765         es_format_t *p_fmt = &p_tk->fmt;
 766
 767         if( p_fmt->i_cat == UNKNOWN_ES || !p_tk->psz_codec )
 768         {
 769             msg_Warn( &sys.demuxer, "invalid track[%d, n=%d]", (int)i_track, p_tk->i_number );
 770             p_tk->p_es = NULL;
 771             continue;
 772         }
 773
 774         if( !strcmp( p_tk->psz_codec, "V_MS/VFW/FOURCC" ) )
 775         {
 776             if( p_tk->i_extra_data < (int)sizeof( BITMAPINFOHEADER ) )
 777             {
 778                 msg_Err( &sys.demuxer, "missing/invalid BITMAPINFOHEADER" );
 779                 p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 780             }
 781             else
 782             {
 783                 BITMAPINFOHEADER *p_bih = (BITMAPINFOHEADER*)p_tk->p_extra_data;
 784
 785                 p_tk->fmt.video.i_width = GetDWLE( &p_bih->biWidth );
 786                 p_tk->fmt.video.i_height= GetDWLE( &p_bih->biHeight );
 787                 p_tk->fmt.i_codec       = GetFOURCC( &p_bih->biCompression );
 788
 789                 p_tk->fmt.i_extra       = GetDWLE( &p_bih->biSize ) - sizeof( BITMAPINFOHEADER );
 790                 if( p_tk->fmt.i_extra > 0 )
 791                 {
 792                     p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 793                     memcpy( p_tk->fmt.p_extra, &p_bih[1], p_tk->fmt.i_extra );
 794                 }
 795             }
 796             p_tk->b_dts_only = true;
 797         }
 798         else if( !strcmp( p_tk->psz_codec, "V_MPEG1" ) ||
 799                  !strcmp( p_tk->psz_codec, "V_MPEG2" ) )
 800         {
 801             p_tk->fmt.i_codec = VLC_CODEC_MPGV;
 802         }
 803         else if( !strncmp( p_tk->psz_codec, "V_THEORA", 8 ) )
 804         {
 805             p_tk->fmt.i_codec = VLC_CODEC_THEORA;
 806             fill_extra_data( p_tk );
 807             p_tk->b_pts_only = true;
 808         }
 809         else if( !strncmp( p_tk->psz_codec, "V_REAL/RV", 9 ) )
 810         {
 811             if( !strcmp( p_tk->psz_codec, "V_REAL/RV10" ) )
 812                 p_fmt->i_codec = VLC_CODEC_RV10;
 813             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV20" ) )
 814                 p_fmt->i_codec = VLC_CODEC_RV20;
 815             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV30" ) )
 816                 p_fmt->i_codec = VLC_CODEC_RV30;
 817             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV40" ) )
 818                 p_fmt->i_codec = VLC_CODEC_RV40;
 819
 820             if( p_tk->i_extra_data > 26 )
 821             {
 822                 p_fmt->p_extra = malloc( p_tk->i_extra_data - 26 );
 823                 if( p_fmt->p_extra )
 824                 {
 825                     p_fmt->i_extra = p_tk->i_extra_data - 26;
 826                     memcpy( p_fmt->p_extra, &p_tk->p_extra_data[26], p_fmt->i_extra );
 827                 }
 828             }
 829             p_tk->b_dts_only = true;
 830         }
 831         else if( !strncmp( p_tk->psz_codec, "V_DIRAC", 7 ) )
 832         {
 833             p_tk->fmt.i_codec = VLC_CODEC_DIRAC;
 834         }
 835         else if( !strncmp( p_tk->psz_codec, "V_VP8", 5 ) )
 836         {
 837             p_tk->fmt.i_codec = VLC_CODEC_VP8;
 838             p_tk->b_pts_only = true;
 839         }
 840         else if( !strncmp( p_tk->psz_codec, "V_MPEG4", 7 ) )
 841         {
 842             if( !strcmp( p_tk->psz_codec, "V_MPEG4/MS/V3" ) )
 843             {
 844                 p_tk->fmt.i_codec = VLC_CODEC_DIV3;
 845             }
 846             else if( !strncmp( p_tk->psz_codec, "V_MPEG4/ISO", 11 ) )
 847             {
 848                 /* A MPEG 4 codec, SP, ASP, AP or AVC */
 849                 if( !strcmp( p_tk->psz_codec, "V_MPEG4/ISO/AVC" ) )
 850                     p_tk->fmt.i_codec = VLC_FOURCC( 'a', 'v', 'c', '1' );
 851                 else
 852                     p_tk->fmt.i_codec = VLC_CODEC_MP4V;
 853                 fill_extra_data( p_tk );
 854             }
 855         }
 856         else if( !strcmp( p_tk->psz_codec, "V_QUICKTIME" ) )
 857         {
 858             MP4_Box_t *p_box = (MP4_Box_t*)xmalloc( sizeof( MP4_Box_t ) );
 859             stream_t *p_mp4_stream = stream_MemoryNew( VLC_OBJECT(&sys.demuxer),
 860                                                        p_tk->p_extra_data,
 861                                                        p_tk->i_extra_data,
 862                                                        true );
 863             if( MP4_ReadBoxCommon( p_mp4_stream, p_box ) &&
 864                 MP4_ReadBox_sample_vide( p_mp4_stream, p_box ) )
 865             {
 866                 p_tk->fmt.i_codec = p_box->i_type;
 867                 p_tk->fmt.video.i_width = p_box->data.p_sample_vide->i_width;
 868                 p_tk->fmt.video.i_height = p_box->data.p_sample_vide->i_height;
 869                 p_tk->fmt.i_extra = p_box->data.p_sample_vide->i_qt_image_description;
 870                 p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 871                 memcpy( p_tk->fmt.p_extra, p_box->data.p_sample_vide->p_qt_image_description, p_tk->fmt.i_extra );
 872                 MP4_FreeBox_sample_vide( p_box );
 873             }
 874             else
 875             {
 876                 free( p_box );
 877             }
 878             stream_Delete( p_mp4_stream );
 879         }
 880         else if( !strcmp( p_tk->psz_codec, "A_MS/ACM" ) )
 881         {
 882             if( p_tk->i_extra_data < (int)sizeof( WAVEFORMATEX ) )
 883             {
 884                 msg_Err( &sys.demuxer, "missing/invalid WAVEFORMATEX" );
 885                 p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 886             }
 887             else
 888             {
 889                 WAVEFORMATEX *p_wf = (WAVEFORMATEX*)p_tk->p_extra_data;
 890
 891                 wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &p_tk->fmt.i_codec, NULL );
 892
 893                 p_tk->fmt.audio.i_channels   = GetWLE( &p_wf->nChannels );
 894                 p_tk->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
 895                 p_tk->fmt.i_bitrate    = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
 896                 p_tk->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );;
 897                 p_tk->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
 898
 899                 p_tk->fmt.i_extra            = GetWLE( &p_wf->cbSize );
 900                 if( p_tk->fmt.i_extra > 0 )
 901                 {
 902                     p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 903                     memcpy( p_tk->fmt.p_extra, &p_wf[1], p_tk->fmt.i_extra );
 904                 }
 905             }
 906         }
 907         else if( !strcmp( p_tk->psz_codec, "A_MPEG/L3" ) ||
 908                  !strcmp( p_tk->psz_codec, "A_MPEG/L2" ) ||
 909                  !strcmp( p_tk->psz_codec, "A_MPEG/L1" ) )
 910         {
 911             p_tk->fmt.i_codec = VLC_CODEC_MPGA;
 912         }
 913         else if( !strcmp( p_tk->psz_codec, "A_AC3" ) )
 914         {
 915             p_tk->fmt.i_codec = VLC_CODEC_A52;
 916         }
 917         else if( !strcmp( p_tk->psz_codec, "A_EAC3" ) )
 918         {
 919             p_tk->fmt.i_codec = VLC_CODEC_EAC3;
 920         }
 921         else if( !strcmp( p_tk->psz_codec, "A_DTS" ) )
 922         {
 923             p_tk->fmt.i_codec = VLC_CODEC_DTS;
 924         }
 925         else if( !strcmp( p_tk->psz_codec, "A_MLP" ) )
 926         {
 927             p_tk->fmt.i_codec = VLC_CODEC_MLP;
 928         }
 929         else if( !strcmp( p_tk->psz_codec, "A_TRUEHD" ) )
 930         {
 931             /* FIXME when more samples arrive */
 932             p_tk->fmt.i_codec = VLC_CODEC_TRUEHD;
 933             p_fmt->b_packetized = false;
 934         }
 935         else if( !strcmp( p_tk->psz_codec, "A_FLAC" ) )
 936         {
 937             p_tk->fmt.i_codec = VLC_CODEC_FLAC;
 938             fill_extra_data( p_tk );
 939         }
 940         else if( !strcmp( p_tk->psz_codec, "A_VORBIS" ) )
 941         {
 942             p_tk->fmt.i_codec = VLC_CODEC_VORBIS;
 943             fill_extra_data( p_tk );
 944         }
 945         else if( !strncmp( p_tk->psz_codec, "A_AAC/MPEG2/", strlen( "A_AAC/MPEG2/" ) ) ||
 946                  !strncmp( p_tk->psz_codec, "A_AAC/MPEG4/", strlen( "A_AAC/MPEG4/" ) ) )
 947         {
 948             int i_profile, i_srate, sbr = 0;
 949             static const unsigned int i_sample_rates[] =
 950             {
 951                     96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
 952                     16000, 12000, 11025,  8000,  7350,     0,     0,     0
 953             };
 954
 955             p_tk->fmt.i_codec = VLC_CODEC_MP4A;
 956             /* create data for faad (MP4DecSpecificDescrTag)*/
 957
 958             if( !strcmp( &p_tk->psz_codec[12], "MAIN" ) )
 959             {
 960                 i_profile = 0;
 961             }
 962             else if( !strcmp( &p_tk->psz_codec[12], "LC" ) )
 963             {
 964                 i_profile = 1;
 965             }
 966             else if( !strcmp( &p_tk->psz_codec[12], "SSR" ) )
 967             {
 968                 i_profile = 2;
 969             }
 970             else if( !strcmp( &p_tk->psz_codec[12], "LC/SBR" ) )
 971             {
 972                 i_profile = 1;
 973                 sbr = 1;
 974             }
 975             else
 976             {
 977                 i_profile = 3;
 978             }
 979
 980             for( i_srate = 0; i_srate < 13; i_srate++ )
 981             {
 982                 if( i_sample_rates[i_srate] == p_tk->i_original_rate )
 983                 {
 984                     break;
 985                 }
 986             }
 987             msg_Dbg( &sys.demuxer, "profile=%d srate=%d", i_profile, i_srate );
 988
 989             p_tk->fmt.i_extra = sbr ? 5 : 2;
 990             p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 991             ((uint8_t*)p_tk->fmt.p_extra)[0] = ((i_profile + 1) << 3) | ((i_srate&0xe) >> 1);
 992             ((uint8_t*)p_tk->fmt.p_extra)[1] = ((i_srate & 0x1) << 7) | (p_tk->fmt.audio.i_channels << 3);
 993             if (sbr != 0)
 994             {
 995                 int syncExtensionType = 0x2B7;
 996                 int iDSRI;
 997                 for (iDSRI=0; iDSRI<13; iDSRI++)
 998                     if( i_sample_rates[iDSRI] == p_tk->fmt.audio.i_rate )
 999                         break;
1000                 ((uint8_t*)p_tk->fmt.p_extra)[2] = (syncExtensionType >> 3) & 0xFF;
1001                 ((uint8_t*)p_tk->fmt.p_extra)[3] = ((syncExtensionType & 0x7) << 5) | 5;
1002                 ((uint8_t*)p_tk->fmt.p_extra)[4] = ((1 & 0x1) << 7) | (iDSRI << 3);
1003             }
1004         }
1005         else if( !strcmp( p_tk->psz_codec, "A_AAC" ) )
1006         {
1007             p_tk->fmt.i_codec = VLC_CODEC_MP4A;
1008             fill_extra_data( p_tk );
1009         }
1010         else if( !strcmp( p_tk->psz_codec, "A_WAVPACK4" ) )
1011         {
1012             p_tk->fmt.i_codec = VLC_CODEC_WAVPACK;
1013             fill_extra_data( p_tk );
1014         }
1015         else if( !strcmp( p_tk->psz_codec, "A_TTA1" ) )
1016         {
1017             p_fmt->i_codec = VLC_CODEC_TTA;
1018             if( p_tk->i_extra_data > 0 )
1019             {
1020                 fill_extra_data( p_tk );
1021             }
1022             else
1023             {
1024                 p_fmt->i_extra = 30;
1025                 p_fmt->p_extra = xmalloc( p_fmt->i_extra );
1026                 uint8_t *p_extra = (uint8_t*)p_fmt->p_extra;
1027                 memcpy( &p_extra[ 0], "TTA1", 4 );
1028                 SetWLE( &p_extra[ 4], 1 );
1029                 SetWLE( &p_extra[ 6], p_fmt->audio.i_channels );
1030                 SetWLE( &p_extra[ 8], p_fmt->audio.i_bitspersample );
1031                 SetDWLE( &p_extra[10], p_fmt->audio.i_rate );
1032                 SetDWLE( &p_extra[14], 0xffffffff );
1033                 memset( &p_extra[18], 0, 30  - 18 );
1034             }
1035         }
1036         else if( !strcmp( p_tk->psz_codec, "A_PCM/INT/BIG" ) ||
1037                  !strcmp( p_tk->psz_codec, "A_PCM/INT/LIT" ) ||
1038                  !strcmp( p_tk->psz_codec, "A_PCM/FLOAT/IEEE" ) )
1039         {
1040             if( !strcmp( p_tk->psz_codec, "A_PCM/INT/BIG" ) )
1041             {
1042                 p_tk->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1043             }
1044             else
1045             {
1046                 p_tk->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1047             }
1048             p_tk->fmt.audio.i_blockalign = ( p_tk->fmt.audio.i_bitspersample + 7 ) / 8 * p_tk->fmt.audio.i_channels;
1049         }
1050         else if( !strncmp( p_tk->psz_codec, "A_REAL/", 7 ) )
1051         {
1052             if( !strcmp( p_tk->psz_codec, "A_REAL/COOK" ) )
1053                 p_tk->fmt.i_codec = VLC_CODEC_COOK;
1054             else if( !strcmp( p_tk->psz_codec, "A_REAL/ATRC" ) )
1055                 p_tk->fmt.i_codec = VLC_CODEC_ATRAC3;
1056             else if( !strcmp( p_tk->psz_codec, "A_REAL/28_8" ) )
1057                 p_tk->fmt.i_codec = VLC_CODEC_RA_288;
1058             /* FIXME 14_4, RALF and SIPR */
1059             fill_extra_data( p_tk );
1060         }
1061         else if( !strcmp( p_tk->psz_codec, "A_REAL/14_4" ) )
1062         {
1063             p_fmt->i_codec = VLC_CODEC_RA_144;
1064             p_fmt->audio.i_channels = 1;
1065             p_fmt->audio.i_rate = 8000;
1066             p_fmt->audio.i_blockalign = 0x14;
1067         }
1068         /* disabled due to the potential "S_KATE" namespace issue */
1069         else if( !strcmp( p_tk->psz_codec, "S_KATE" ) )
1070         {
1071             int i, i_offset = 1, i_extra, num_headers, size_so_far;
1072             uint8_t *p_extra;
1073
1074             p_tk->fmt.i_codec = VLC_CODEC_KATE;
1075             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1076
1077             fill_extra_data( p_tk );
1078         }
1079         else if( !strcmp( p_tk->psz_codec, "S_TEXT/ASCII" ) )
1080         {
1081             p_fmt->i_codec = VLC_CODEC_SUBT;
1082             p_fmt->subs.psz_encoding = NULL; /* Is there a place where it is stored ? */
1083         }
1084         else if( !strcmp( p_tk->psz_codec, "S_TEXT/UTF8" ) )
1085         {
1086             p_tk->fmt.i_codec = VLC_CODEC_SUBT;
1087             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1088         }
1089         else if( !strcmp( p_tk->psz_codec, "S_TEXT/USF" ) )
1090         {
1091             p_tk->fmt.i_codec = VLC_FOURCC( 'u', 's', 'f', ' ' );
1092             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1093             if( p_tk->i_extra_data )
1094             {
1095                 fill_extra_data( p_tk );
1096             }
1097         }
1098         else if( !strcmp( p_tk->psz_codec, "S_TEXT/SSA" ) ||
1099                  !strcmp( p_tk->psz_codec, "S_TEXT/ASS" ) ||
1100                  !strcmp( p_tk->psz_codec, "S_SSA" ) ||
1101                  !strcmp( p_tk->psz_codec, "S_ASS" ))
1102         {
1103             p_tk->fmt.i_codec = VLC_CODEC_SSA;
1104             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1105             if( p_tk->i_extra_data )
1106             {
1107                 fill_extra_data( p_tk );
1108             }
1109         }
1110         else if( !strcmp( p_tk->psz_codec, "S_VOBSUB" ) )
1111         {
1112             p_tk->fmt.i_codec = VLC_CODEC_SPU;
1113             if( p_tk->i_extra_data )
1114             {
1115                 char *psz_start;
1116                 char *psz_buf = (char *)malloc( p_tk->i_extra_data + 1);
1117                 if( psz_buf != NULL )
1118                 {
1119                     memcpy( psz_buf, p_tk->p_extra_data , p_tk->i_extra_data );
1120                     psz_buf[p_tk->i_extra_data] = '\0';
1121
1122                     psz_start = strstr( psz_buf, "size:" );
1123                     if( psz_start &&
1124                         vobsub_size_parse( psz_start,
1125                                            &p_tk->fmt.subs.spu.i_original_frame_width,
1126                                            &p_tk->fmt.subs.spu.i_original_frame_height ) == VLC_SUCCESS )
1127                     {
1128                         msg_Dbg( &sys.demuxer, "original frame size vobsubs: %dx%d",
1129                                  p_tk->fmt.subs.spu.i_original_frame_width,
1130                                  p_tk->fmt.subs.spu.i_original_frame_height );
1131                     }
1132                     else
1133                     {
1134                         msg_Warn( &sys.demuxer, "reading original frame size for vobsub failed" );
1135                     }
1136
1137                     psz_start = strstr( psz_buf, "palette:" );
1138                     if( psz_start &&
1139                         vobsub_palette_parse( psz_start, &p_tk->fmt.subs.spu.palette[1] ) == VLC_SUCCESS )
1140                     {
1141                         p_tk->fmt.subs.spu.palette[0] =  0xBeef;
1142                         msg_Dbg( &sys.demuxer, "vobsub palette read" );
1143                     }
1144                     else
1145                     {
1146                         msg_Warn( &sys.demuxer, "reading original palette failed" );
1147                     }
1148                     free( psz_buf );
1149                 }
1150             }
1151         }
1152         else if( !strcmp( p_tk->psz_codec, "S_HDMV/PGS" ) )
1153         {
1154             p_tk->fmt.i_codec = VLC_CODEC_BD_PG;
1155         }
1156         else if( !strcmp( p_tk->psz_codec, "B_VOBBTN" ) )
1157         {
1158             p_tk->fmt.i_cat = NAV_ES;
1159             continue;
1160         }
1161         else
1162         {
1163             msg_Err( &sys.demuxer, "unknown codec id=`%s'", p_tk->psz_codec );
1164             p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
1165         }
1166         if( p_tk->b_default )
1167         {
1168             p_tk->fmt.i_priority = 1000;
1169         }
1170
1171         p_tk->p_es = es_out_Add( sys.demuxer.out, &p_tk->fmt );
1172
1173         /* Turn on a subtitles track if it has been flagged as default -
1174          * but only do this if no subtitles track has already been engaged,
1175          * either by an earlier 'default track' (??) or by default
1176          * language choice behaviour.
1177          */
1178         if( p_tk->b_default )
1179         {
1180             es_out_Control( sys.demuxer.out,
1181                             ES_OUT_SET_ES_DEFAULT,
1182                             p_tk->p_es );
1183         }
1184     }
1185     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_start_time );
1186
1187     sys.i_start_pts = i_start_time;
1188     // reset the stream reading to the first cluster of the segment used
1189     es.I_O().setFilePointer( i_start_pos );
1190
1191     delete ep;
1192     ep = new EbmlParser( &es, segment, &sys.demuxer );
1193
1194     return true;
1195 }
1196
1197 void matroska_segment_c::UnSelect( )
1198 {
1199     size_t i_track;
1200
1201     for( i_track = 0; i_track < tracks.size(); i_track++ )
1202     {
1203         if ( tracks[i_track]->p_es != NULL )
1204         {
1205 //            es_format_Clean( &tracks[i_track]->fmt );
1206             es_out_Del( sys.demuxer.out, tracks[i_track]->p_es );
1207             tracks[i_track]->p_es = NULL;
1208         }
1209     }
1210     delete ep;
1211     ep = NULL;
1212 }
1213
1214 int matroska_segment_c::BlockGet( KaxBlock * & pp_block, KaxSimpleBlock * & pp_simpleblock, bool *pb_key_picture, bool *pb_discardable_picture, int64_t *pi_duration )
1215 {
1216     pp_simpleblock = NULL;
1217     pp_block = NULL;
1218
1219     *pb_key_picture         = true;
1220     *pb_discardable_picture = false;
1221
1222     for( ;; )
1223     {
1224         EbmlElement *el = NULL;
1225         int         i_level;
1226
1227         if ( ep == NULL )
1228             return VLC_EGENERIC;
1229
1230         if( pp_simpleblock != NULL || ((el = ep->Get()) == NULL && pp_block != NULL) )
1231         {
1232             /* Check blocks validity to protect againts broken files */
1233             if( BlockFindTrackIndex( NULL, pp_block , pp_simpleblock ) )
1234             {
1235                 delete pp_block;
1236                 pp_simpleblock = NULL;
1237                 pp_block = NULL;
1238                 continue;
1239             }
1240             if( pp_simpleblock != NULL )
1241             {
1242                 *pb_key_picture         = pp_simpleblock->IsKeyframe();
1243                 *pb_discardable_picture = pp_simpleblock->IsDiscardable();
1244             }
1245
1246             /* update the index */
1247 #define idx p_indexes[i_index - 1]
1248             if( i_index > 0 && idx.i_time == -1 )
1249             {
1250                 if ( pp_simpleblock != NULL )
1251                     idx.i_time        = pp_simpleblock->GlobalTimecode() / (mtime_t)1000;
1252                 else
1253                     idx.i_time        = (*pp_block).GlobalTimecode() / (mtime_t)1000;
1254                 idx.b_key         = *pb_key_picture;
1255             }
1256 #undef idx
1257             return VLC_SUCCESS;
1258         }
1259
1260         i_level = ep->GetLevel();
1261
1262         if( el == NULL )
1263         {
1264             if( i_level > 1 )
1265             {
1266                 ep->Up();
1267                 continue;
1268             }
1269             msg_Warn( &sys.demuxer, "EOF" );
1270             return VLC_EGENERIC;
1271         }
1272
1273         /* Verify that we are still inside our cluster
1274          * It can happens whith broken files and when seeking
1275          * without index */
1276         if( i_level > 1 )
1277         {
1278             if( cluster && !ep->IsTopPresent( cluster ) )
1279             {
1280                 msg_Warn( &sys.demuxer, "Unexpected escape from current cluster" );
1281                 cluster = NULL;
1282             }
1283             if( !cluster )
1284                 continue;
1285         }
1286
1287         /* do parsing */
1288         switch ( i_level )
1289         {
1290         case 1:
1291             if( MKV_IS_ID( el, KaxCluster ) )
1292             {
1293                 cluster = (KaxCluster*)el;
1294                 i_cluster_pos = cluster->GetElementPosition();
1295
1296                 /* add it to the index */
1297                 if( i_index == 0 ||
1298                     ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
1299                 {
1300                     IndexAppendCluster( cluster );
1301                 }
1302
1303                 // reset silent tracks
1304                 for (size_t i=0; i<tracks.size(); i++)
1305                 {
1306                     tracks[i]->b_silent = false;
1307                 }
1308
1309                 ep->Down();
1310             }
1311             else if( MKV_IS_ID( el, KaxCues ) )
1312             {
1313                 msg_Warn( &sys.demuxer, "find KaxCues FIXME" );
1314                 return VLC_EGENERIC;
1315             }
1316             else
1317             {
1318                 msg_Dbg( &sys.demuxer, "unknown (%s)", typeid( el ).name() );
1319             }
1320             break;
1321         case 2:
1322             if( MKV_IS_ID( el, KaxClusterTimecode ) )
1323             {
1324                 KaxClusterTimecode &ctc = *(KaxClusterTimecode*)el;
1325
1326                 ctc.ReadData( es.I_O(), SCOPE_ALL_DATA );
1327                 cluster->InitTimecode( uint64( ctc ), i_timescale );
1328             }
1329             else if( MKV_IS_ID( el, KaxClusterSilentTracks ) )
1330             {
1331                 ep->Down();
1332             }
1333             else if( MKV_IS_ID( el, KaxBlockGroup ) )
1334             {
1335                 i_block_pos = el->GetElementPosition();
1336                 ep->Down();
1337             }
1338             else if( MKV_IS_ID( el, KaxSimpleBlock ) )
1339             {
1340                 pp_simpleblock = (KaxSimpleBlock*)el;
1341
1342                 pp_simpleblock->ReadData( es.I_O() );
1343                 pp_simpleblock->SetParent( *cluster );
1344             }
1345             break;
1346         case 3:
1347             if( MKV_IS_ID( el, KaxBlock ) )
1348             {
1349                 pp_block = (KaxBlock*)el;
1350
1351                 pp_block->ReadData( es.I_O() );
1352                 pp_block->SetParent( *cluster );
1353
1354                 ep->Keep();
1355             }
1356             else if( MKV_IS_ID( el, KaxBlockDuration ) )
1357             {
1358                 KaxBlockDuration &dur = *(KaxBlockDuration*)el;
1359
1360                 dur.ReadData( es.I_O() );
1361                 *pi_duration = uint64( dur );
1362             }
1363             else if( MKV_IS_ID( el, KaxReferenceBlock ) )
1364             {
1365                 KaxReferenceBlock &ref = *(KaxReferenceBlock*)el;
1366
1367                 ref.ReadData( es.I_O() );
1368
1369                 if( *pb_key_picture )
1370                     *pb_key_picture = false;
1371                 else if( int64( ref ) > 0 )
1372                     *pb_discardable_picture = true;
1373             }
1374             else if( MKV_IS_ID( el, KaxClusterSilentTrackNumber ) )
1375             {
1376                 KaxClusterSilentTrackNumber &track_num = *(KaxClusterSilentTrackNumber*)el;
1377                 track_num.ReadData( es.I_O() );
1378                 // find the track
1379                 for (size_t i=0; i<tracks.size(); i++)
1380                 {
1381                     if ( tracks[i]->i_number == uint32(track_num))
1382                     {
1383                         tracks[i]->b_silent = true;
1384                         break;
1385                     }
1386                 }
1387             }
1388             break;
1389         default:
1390             msg_Err( &sys.demuxer, "invalid level = %d", i_level );
1391             return VLC_EGENERIC;
1392         }
1393     }
1394 }
1395