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

   1 /*****************************************************************************
   2  * mkv.cpp : matroska demuxer
   3  *****************************************************************************
   4  * Copyright (C) 2003-2010 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 bool matroska_segment_c::PreloadFamily( const matroska_segment_c & of_segment )
 353 {
 354     if ( b_preloaded )
 355         return false;
 356
 357     for (size_t i=0; i<families.size(); i++)
 358     {
 359         for (size_t j=0; j<of_segment.families.size(); j++)
 360         {
 361             if ( *(families[i]) == *(of_segment.families[j]) )
 362                 return Preload( );
 363         }
 364     }
 365
 366     return false;
 367 }
 368
 369 bool matroska_segment_c::CompareSegmentUIDs( const matroska_segment_c * p_item_a, const matroska_segment_c * p_item_b )
 370 {
 371     EbmlBinary *p_tmp;
 372
 373     if ( p_item_a == NULL || p_item_b == NULL )
 374         return false;
 375
 376     p_tmp = (EbmlBinary *)p_item_a->p_segment_uid;
 377     if ( p_item_b->p_prev_segment_uid != NULL
 378           && *p_tmp == *p_item_b->p_prev_segment_uid )
 379         return true;
 380
 381     p_tmp = (EbmlBinary *)p_item_a->p_next_segment_uid;
 382     if ( !p_tmp )
 383         return false;
 384
 385     if ( p_item_b->p_segment_uid != NULL
 386           && *p_tmp == *p_item_b->p_segment_uid )
 387         return true;
 388
 389     if ( p_item_b->p_prev_segment_uid != NULL
 390           && *p_tmp == *p_item_b->p_prev_segment_uid )
 391         return true;
 392
 393     return false;
 394 }
 395
 396 bool matroska_segment_c::Preload( )
 397 {
 398     if ( b_preloaded )
 399         return false;
 400
 401     EbmlElement *el = NULL;
 402
 403     ep->Reset( &sys.demuxer );
 404
 405     while( ( el = ep->Get() ) != NULL )
 406     {
 407         if( MKV_IS_ID( el, KaxSeekHead ) )
 408         {
 409             /* Multiple allowed */
 410             /* We bail at 10, to prevent possible recursion */
 411             msg_Dbg(  &sys.demuxer, "|   + Seek head" );
 412             if( i_seekhead_count < 10 )
 413             {
 414                 i_seekhead_position = (int64_t) es.I_O().getFilePointer();
 415                 ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 416             }
 417         }
 418         else if( MKV_IS_ID( el, KaxInfo ) )
 419         {
 420             /* Multiple allowed, mandatory */
 421             msg_Dbg(  &sys.demuxer, "|   + Information" );
 422             if( i_info_position < 0 ) // FIXME
 423                 ParseInfo( static_cast<KaxInfo*>( el ) );
 424             i_info_position = (int64_t) es.I_O().getFilePointer();
 425         }
 426         else if( MKV_IS_ID( el, KaxTracks ) )
 427         {
 428             /* Multiple allowed */
 429             msg_Dbg(  &sys.demuxer, "|   + Tracks" );
 430             if( i_tracks_position < 0 ) // FIXME
 431                 ParseTracks( static_cast<KaxTracks*>( el ) );
 432             if ( tracks.size() == 0 )
 433             {
 434                 msg_Err( &sys.demuxer, "No tracks supported" );
 435                 return false;
 436             }
 437             i_tracks_position = (int64_t) es.I_O().getFilePointer();
 438         }
 439         else if( MKV_IS_ID( el, KaxCues ) )
 440         {
 441             msg_Dbg(  &sys.demuxer, "|   + Cues" );
 442             if( i_cues_position < 0 )
 443                 LoadCues( static_cast<KaxCues*>( el ) );
 444             i_cues_position = (int64_t) es.I_O().getFilePointer();
 445         }
 446         else if( MKV_IS_ID( el, KaxCluster ) )
 447         {
 448             msg_Dbg( &sys.demuxer, "|   + Cluster" );
 449
 450             cluster = (KaxCluster*)el;
 451
 452             i_cluster_pos = i_start_pos = cluster->GetElementPosition();
 453             ParseCluster( );
 454
 455             ep->Down();
 456             /* stop pre-parsing the stream */
 457             break;
 458         }
 459         else if( MKV_IS_ID( el, KaxAttachments ) )
 460         {
 461             msg_Dbg( &sys.demuxer, "|   + Attachments" );
 462             if( i_attachments_position < 0 )
 463                 ParseAttachments( static_cast<KaxAttachments*>( el ) );
 464             i_attachments_position = (int64_t) es.I_O().getFilePointer();
 465         }
 466         else if( MKV_IS_ID( el, KaxChapters ) )
 467         {
 468             msg_Dbg( &sys.demuxer, "|   + Chapters" );
 469             if( i_chapters_position < 0 )
 470                 ParseChapters( static_cast<KaxChapters*>( el ) );
 471             i_chapters_position = (int64_t) es.I_O().getFilePointer();
 472         }
 473         else if( MKV_IS_ID( el, KaxTag ) )
 474         {
 475             msg_Dbg( &sys.demuxer, "|   + Tags" );
 476             if( i_tags_position < 0) // FIXME
 477                 ;//LoadTags( static_cast<KaxTags*>( el ) );
 478             i_tags_position = (int64_t) es.I_O().getFilePointer();
 479         }
 480         else if( MKV_IS_ID( el, EbmlVoid ) )
 481             msg_Dbg( &sys.demuxer, "|   + Void" );
 482         else
 483             msg_Dbg( &sys.demuxer, "|   + Preload Unknown (%s)", typeid(*el).name() );
 484     }
 485
 486     b_preloaded = true;
 487
 488     return true;
 489 }
 490
 491 /* Here we try to load elements that were found in Seek Heads, but not yet parsed */
 492 bool matroska_segment_c::LoadSeekHeadItem( const EbmlCallbacks & ClassInfos, int64_t i_element_position )
 493 {
 494     int64_t     i_sav_position = (int64_t)es.I_O().getFilePointer();
 495     EbmlElement *el;
 496
 497     es.I_O().setFilePointer( i_element_position, seek_beginning );
 498     el = es.FindNextID( ClassInfos, 0xFFFFFFFFL);
 499
 500     if( el == NULL )
 501     {
 502         msg_Err( &sys.demuxer, "cannot load some cues/chapters/tags etc. (broken seekhead or file)" );
 503         es.I_O().setFilePointer( i_sav_position, seek_beginning );
 504         return false;
 505     }
 506
 507     if( MKV_IS_ID( el, KaxSeekHead ) )
 508     {
 509         /* Multiple allowed */
 510         msg_Dbg( &sys.demuxer, "|   + Seek head" );
 511         if( i_seekhead_count < 10 )
 512         {
 513             i_seekhead_position = i_element_position;
 514             ParseSeekHead( static_cast<KaxSeekHead*>( el ) );
 515         }
 516     }
 517     else if( MKV_IS_ID( el, KaxInfo ) ) // FIXME
 518     {
 519         /* Multiple allowed, mandatory */
 520         msg_Dbg( &sys.demuxer, "|   + Information" );
 521         if( i_info_position < 0 )
 522             ParseInfo( static_cast<KaxInfo*>( el ) );
 523         i_info_position = i_element_position;
 524     }
 525     else if( MKV_IS_ID( el, KaxTracks ) ) // FIXME
 526     {
 527         /* Multiple allowed */
 528         msg_Dbg( &sys.demuxer, "|   + Tracks" );
 529         if( i_tracks_position < 0 )
 530             ParseTracks( static_cast<KaxTracks*>( el ) );
 531         if ( tracks.size() == 0 )
 532         {
 533             msg_Err( &sys.demuxer, "No tracks supported" );
 534             delete el;
 535             es.I_O().setFilePointer( i_sav_position, seek_beginning );
 536             return false;
 537         }
 538         i_tracks_position = i_element_position;
 539     }
 540     else if( MKV_IS_ID( el, KaxCues ) )
 541     {
 542         msg_Dbg( &sys.demuxer, "|   + Cues" );
 543         if( i_cues_position < 0 )
 544             LoadCues( static_cast<KaxCues*>( el ) );
 545         i_cues_position = i_element_position;
 546     }
 547     else if( MKV_IS_ID( el, KaxAttachments ) )
 548     {
 549         msg_Dbg( &sys.demuxer, "|   + Attachments" );
 550         if( i_attachments_position < 0 )
 551             ParseAttachments( static_cast<KaxAttachments*>( el ) );
 552         i_attachments_position = i_element_position;
 553     }
 554     else if( MKV_IS_ID( el, KaxChapters ) )
 555     {
 556         msg_Dbg( &sys.demuxer, "|   + Chapters" );
 557         if( i_chapters_position < 0 )
 558             ParseChapters( static_cast<KaxChapters*>( el ) );
 559         i_chapters_position = i_element_position;
 560     }
 561     else if( MKV_IS_ID( el, KaxTag ) ) // FIXME
 562     {
 563         msg_Dbg( &sys.demuxer, "|   + Tags" );
 564         if( i_tags_position < 0 )
 565             ;//LoadTags( static_cast<KaxTags*>( el ) );
 566         i_tags_position = i_element_position;
 567     }
 568     else
 569     {
 570         msg_Dbg( &sys.demuxer, "|   + LoadSeekHeadItem Unknown (%s)", typeid(*el).name() );
 571     }
 572     delete el;
 573
 574     es.I_O().setFilePointer( i_sav_position, seek_beginning );
 575     return true;
 576 }
 577
 578 void matroska_segment_c::Seek( mtime_t i_date, mtime_t i_time_offset, int64_t i_global_position )
 579 {
 580     KaxBlock    *block;
 581     KaxSimpleBlock *simpleblock;
 582     int         i_track_skipping;
 583     int64_t     i_block_duration;
 584     size_t      i_track;
 585     int64_t     i_seek_position = i_start_pos;
 586     int64_t     i_seek_time = i_start_time;
 587
 588     if( i_global_position >= 0 )
 589     {
 590         /* Special case for seeking in files with no cues */
 591         EbmlElement *el = NULL;
 592         es.I_O().setFilePointer( i_start_pos, seek_beginning );
 593         delete ep;
 594         ep = new EbmlParser( &es, segment, &sys.demuxer );
 595         cluster = NULL;
 596
 597         while( ( el = ep->Get() ) != NULL )
 598         {
 599             if( MKV_IS_ID( el, KaxCluster ) )
 600             {
 601                 cluster = (KaxCluster *)el;
 602                 i_cluster_pos = cluster->GetElementPosition();
 603                 if( i_index == 0 ||
 604                         ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
 605                 {
 606                     IndexAppendCluster( cluster );
 607                 }
 608                 if( es.I_O().getFilePointer() >= i_global_position )
 609                 {
 610                     ParseCluster();
 611                     msg_Dbg( &sys.demuxer, "we found a cluster that is in the neighbourhood" );
 612                     return;
 613                 }
 614             }
 615         }
 616         msg_Err( &sys.demuxer, "This file has no cues, and we were unable to seek to the requested position by parsing." );
 617         return;
 618     }
 619
 620     if ( i_index > 0 )
 621     {
 622         int i_idx = 0;
 623
 624         for( ; i_idx < i_index; i_idx++ )
 625         {
 626             if( p_indexes[i_idx].i_time + i_time_offset > i_date )
 627             {
 628                 break;
 629             }
 630         }
 631
 632         if( i_idx > 0 )
 633         {
 634             i_idx--;
 635         }
 636
 637         i_seek_position = p_indexes[i_idx].i_position;
 638         i_seek_time = p_indexes[i_idx].i_time;
 639     }
 640
 641     msg_Dbg( &sys.demuxer, "seek got %"PRId64" (%d%%)",
 642                 i_seek_time, (int)( 100 * i_seek_position / stream_Size( sys.demuxer.s ) ) );
 643
 644     es.I_O().setFilePointer( i_seek_position, seek_beginning );
 645
 646     delete ep;
 647     ep = new EbmlParser( &es, segment, &sys.demuxer );
 648     cluster = NULL;
 649
 650     sys.i_start_pts = i_date;
 651
 652     /* now parse until key frame */
 653     i_track_skipping = 0;
 654     for( i_track = 0; i_track < tracks.size(); i_track++ )
 655     {
 656         if( tracks[i_track]->fmt.i_cat == VIDEO_ES )
 657         {
 658             tracks[i_track]->b_search_keyframe = true;
 659             i_track_skipping++;
 660         }
 661     }
 662     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
 663
 664     while( i_track_skipping > 0 )
 665     {
 666         bool b_key_picture;
 667         bool b_discardable_picture;
 668         if( BlockGet( block, simpleblock, &b_key_picture, &b_discardable_picture, &i_block_duration ) )
 669         {
 670             msg_Warn( &sys.demuxer, "cannot get block EOF?" );
 671
 672             return;
 673         }
 674
 675         for( i_track = 0; i_track < tracks.size(); i_track++ )
 676         {
 677             if( (simpleblock && tracks[i_track]->i_number == simpleblock->TrackNum()) ||
 678                 (block && tracks[i_track]->i_number == block->TrackNum()) )
 679             {
 680                 break;
 681             }
 682         }
 683
 684         if( simpleblock )
 685             sys.i_pts = (sys.i_chapter_time + simpleblock->GlobalTimecode()) / (mtime_t) 1000;
 686         else
 687             sys.i_pts = (sys.i_chapter_time + block->GlobalTimecode()) / (mtime_t) 1000;
 688
 689         if( i_track < tracks.size() )
 690         {
 691             if( sys.i_pts > sys.i_start_pts )
 692             {
 693                 cluster = static_cast<KaxCluster*>(ep->UnGet( i_block_pos, i_cluster_pos ));
 694                 i_track_skipping = 0;
 695             }
 696             else if( tracks[i_track]->fmt.i_cat == VIDEO_ES )
 697             {
 698                 if( b_key_picture && tracks[i_track]->b_search_keyframe )
 699                 {
 700                     tracks[i_track]->b_search_keyframe = false;
 701                     i_track_skipping--;
 702                 }
 703                 if( !tracks[i_track]->b_search_keyframe )
 704                 {
 705                     BlockDecode( &sys.demuxer, block, simpleblock, sys.i_pts, 0, b_key_picture || b_discardable_picture );
 706                 }
 707             }
 708         }
 709
 710         delete block;
 711     }
 712
 713     /* FIXME current ES_OUT_SET_NEXT_DISPLAY_TIME does not work that well if
 714      * the delay is too high. */
 715     if( sys.i_pts + 500*1000 < sys.i_start_pts )
 716     {
 717         sys.i_start_pts = sys.i_pts;
 718
 719         es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, sys.i_start_pts );
 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     for( i_track = 0; i_track < tracks.size(); i_track++ )
 728     {
 729         const mkv_track_t *tk = tracks[i_track];
 730
 731         if( ( p_block != NULL && tk->i_number == p_block->TrackNum() ) ||
 732             ( p_simpleblock != NULL && tk->i_number == p_simpleblock->TrackNum() ) )
 733         {
 734             break;
 735         }
 736     }
 737
 738     if( i_track >= tracks.size() )
 739         return VLC_EGENERIC;
 740
 741     if( pi_track )
 742         *pi_track = i_track;
 743     return VLC_SUCCESS;
 744 }
 745
 746 static inline void fill_extra_data( mkv_track_t *p_tk )
 747 {
 748       p_tk->fmt.i_extra = p_tk->i_extra_data;
 749       p_tk->fmt.p_extra = xmalloc( p_tk->i_extra_data );
 750       memcpy( p_tk->fmt.p_extra, p_tk->p_extra_data, p_tk->i_extra_data );
 751 }
 752
 753 bool matroska_segment_c::Select( mtime_t i_start_time )
 754 {
 755     /* add all es */
 756     msg_Dbg( &sys.demuxer, "found %d es", (int)tracks.size() );
 757     sys.b_pci_packet_set = false;
 758
 759     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
 760     {
 761         mkv_track_t *p_tk = tracks[i_track];
 762         es_format_t *p_fmt = &p_tk->fmt;
 763
 764         if( p_fmt->i_cat == UNKNOWN_ES || !p_tk->psz_codec )
 765         {
 766             msg_Warn( &sys.demuxer, "invalid track[%d, n=%d]", (int)i_track, p_tk->i_number );
 767             p_tk->p_es = NULL;
 768             continue;
 769         }
 770
 771         if( !strcmp( p_tk->psz_codec, "V_MS/VFW/FOURCC" ) )
 772         {
 773             if( p_tk->i_extra_data < (int)sizeof( BITMAPINFOHEADER ) )
 774             {
 775                 msg_Err( &sys.demuxer, "missing/invalid BITMAPINFOHEADER" );
 776                 p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 777             }
 778             else
 779             {
 780                 BITMAPINFOHEADER *p_bih = (BITMAPINFOHEADER*)p_tk->p_extra_data;
 781
 782                 p_tk->fmt.video.i_width = GetDWLE( &p_bih->biWidth );
 783                 p_tk->fmt.video.i_height= GetDWLE( &p_bih->biHeight );
 784                 p_tk->fmt.i_codec       = GetFOURCC( &p_bih->biCompression );
 785
 786                 p_tk->fmt.i_extra       = GetDWLE( &p_bih->biSize ) - sizeof( BITMAPINFOHEADER );
 787                 if( p_tk->fmt.i_extra > 0 )
 788                 {
 789                     p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 790                     memcpy( p_tk->fmt.p_extra, &p_bih[1], p_tk->fmt.i_extra );
 791                 }
 792             }
 793             p_tk->b_dts_only = true;
 794         }
 795         else if( !strcmp( p_tk->psz_codec, "V_MPEG1" ) ||
 796                  !strcmp( p_tk->psz_codec, "V_MPEG2" ) )
 797         {
 798             p_tk->fmt.i_codec = VLC_CODEC_MPGV;
 799         }
 800         else if( !strncmp( p_tk->psz_codec, "V_THEORA", 8 ) )
 801         {
 802             p_tk->fmt.i_codec = VLC_CODEC_THEORA;
 803             fill_extra_data( p_tk );
 804             p_tk->b_pts_only = true;
 805         }
 806         else if( !strncmp( p_tk->psz_codec, "V_REAL/RV", 9 ) )
 807         {
 808             if( !strcmp( p_tk->psz_codec, "V_REAL/RV10" ) )
 809                 p_fmt->i_codec = VLC_CODEC_RV10;
 810             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV20" ) )
 811                 p_fmt->i_codec = VLC_CODEC_RV20;
 812             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV30" ) )
 813                 p_fmt->i_codec = VLC_CODEC_RV30;
 814             else if( !strcmp( p_tk->psz_codec, "V_REAL/RV40" ) )
 815                 p_fmt->i_codec = VLC_CODEC_RV40;
 816
 817             if( p_tk->i_extra_data > 26 )
 818             {
 819                 p_fmt->p_extra = malloc( p_tk->i_extra_data - 26 );
 820                 if( p_fmt->p_extra )
 821                 {
 822                     p_fmt->i_extra = p_tk->i_extra_data - 26;
 823                     memcpy( p_fmt->p_extra, &p_tk->p_extra_data[26], p_fmt->i_extra );
 824                 }
 825             }
 826             p_tk->b_dts_only = true;
 827         }
 828         else if( !strncmp( p_tk->psz_codec, "V_DIRAC", 7 ) )
 829         {
 830             p_tk->fmt.i_codec = VLC_CODEC_DIRAC;
 831         }
 832         else if( !strncmp( p_tk->psz_codec, "V_VP8", 5 ) )
 833         {
 834             p_tk->fmt.i_codec = VLC_CODEC_VP8;
 835             p_tk->b_pts_only = true;
 836         }
 837         else if( !strncmp( p_tk->psz_codec, "V_MPEG4", 7 ) )
 838         {
 839             if( !strcmp( p_tk->psz_codec, "V_MPEG4/MS/V3" ) )
 840             {
 841                 p_tk->fmt.i_codec = VLC_CODEC_DIV3;
 842             }
 843             else if( !strncmp( p_tk->psz_codec, "V_MPEG4/ISO", 11 ) )
 844             {
 845                 /* A MPEG 4 codec, SP, ASP, AP or AVC */
 846                 if( !strcmp( p_tk->psz_codec, "V_MPEG4/ISO/AVC" ) )
 847                     p_tk->fmt.i_codec = VLC_FOURCC( 'a', 'v', 'c', '1' );
 848                 else
 849                     p_tk->fmt.i_codec = VLC_CODEC_MP4V;
 850                 fill_extra_data( p_tk );
 851             }
 852         }
 853         else if( !strcmp( p_tk->psz_codec, "V_QUICKTIME" ) )
 854         {
 855             MP4_Box_t *p_box = (MP4_Box_t*)xmalloc( sizeof( MP4_Box_t ) );
 856             stream_t *p_mp4_stream = stream_MemoryNew( VLC_OBJECT(&sys.demuxer),
 857                                                        p_tk->p_extra_data,
 858                                                        p_tk->i_extra_data,
 859                                                        true );
 860             if( MP4_ReadBoxCommon( p_mp4_stream, p_box ) &&
 861                 MP4_ReadBox_sample_vide( p_mp4_stream, p_box ) )
 862             {
 863                 p_tk->fmt.i_codec = p_box->i_type;
 864                 p_tk->fmt.video.i_width = p_box->data.p_sample_vide->i_width;
 865                 p_tk->fmt.video.i_height = p_box->data.p_sample_vide->i_height;
 866                 p_tk->fmt.i_extra = p_box->data.p_sample_vide->i_qt_image_description;
 867                 p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 868                 memcpy( p_tk->fmt.p_extra, p_box->data.p_sample_vide->p_qt_image_description, p_tk->fmt.i_extra );
 869                 MP4_FreeBox_sample_vide( p_box );
 870             }
 871             else
 872             {
 873                 free( p_box );
 874             }
 875             stream_Delete( p_mp4_stream );
 876         }
 877         else if( !strcmp( p_tk->psz_codec, "A_MS/ACM" ) )
 878         {
 879             if( p_tk->i_extra_data < (int)sizeof( WAVEFORMATEX ) )
 880             {
 881                 msg_Err( &sys.demuxer, "missing/invalid WAVEFORMATEX" );
 882                 p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
 883             }
 884             else
 885             {
 886                 WAVEFORMATEX *p_wf = (WAVEFORMATEX*)p_tk->p_extra_data;
 887
 888                 wf_tag_to_fourcc( GetWLE( &p_wf->wFormatTag ), &p_tk->fmt.i_codec, NULL );
 889
 890                 p_tk->fmt.audio.i_channels   = GetWLE( &p_wf->nChannels );
 891                 p_tk->fmt.audio.i_rate = GetDWLE( &p_wf->nSamplesPerSec );
 892                 p_tk->fmt.i_bitrate    = GetDWLE( &p_wf->nAvgBytesPerSec ) * 8;
 893                 p_tk->fmt.audio.i_blockalign = GetWLE( &p_wf->nBlockAlign );;
 894                 p_tk->fmt.audio.i_bitspersample = GetWLE( &p_wf->wBitsPerSample );
 895
 896                 p_tk->fmt.i_extra            = GetWLE( &p_wf->cbSize );
 897                 if( p_tk->fmt.i_extra > 0 )
 898                 {
 899                     p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 900                     memcpy( p_tk->fmt.p_extra, &p_wf[1], p_tk->fmt.i_extra );
 901                 }
 902             }
 903         }
 904         else if( !strcmp( p_tk->psz_codec, "A_MPEG/L3" ) ||
 905                  !strcmp( p_tk->psz_codec, "A_MPEG/L2" ) ||
 906                  !strcmp( p_tk->psz_codec, "A_MPEG/L1" ) )
 907         {
 908             p_tk->fmt.i_codec = VLC_CODEC_MPGA;
 909         }
 910         else if( !strcmp( p_tk->psz_codec, "A_AC3" ) )
 911         {
 912             p_tk->fmt.i_codec = VLC_CODEC_A52;
 913         }
 914         else if( !strcmp( p_tk->psz_codec, "A_EAC3" ) )
 915         {
 916             p_tk->fmt.i_codec = VLC_CODEC_EAC3;
 917         }
 918         else if( !strcmp( p_tk->psz_codec, "A_DTS" ) )
 919         {
 920             p_tk->fmt.i_codec = VLC_CODEC_DTS;
 921         }
 922         else if( !strcmp( p_tk->psz_codec, "A_MLP" ) )
 923         {
 924             p_tk->fmt.i_codec = VLC_CODEC_MLP;
 925         }
 926         else if( !strcmp( p_tk->psz_codec, "A_TRUEHD" ) )
 927         {
 928             /* FIXME when more samples arrive */
 929             p_tk->fmt.i_codec = VLC_CODEC_TRUEHD;
 930             p_fmt->b_packetized = false;
 931         }
 932         else if( !strcmp( p_tk->psz_codec, "A_FLAC" ) )
 933         {
 934             p_tk->fmt.i_codec = VLC_CODEC_FLAC;
 935             fill_extra_data( p_tk );
 936         }
 937         else if( !strcmp( p_tk->psz_codec, "A_VORBIS" ) )
 938         {
 939             p_tk->fmt.i_codec = VLC_CODEC_VORBIS;
 940             fill_extra_data( p_tk );
 941         }
 942         else if( !strncmp( p_tk->psz_codec, "A_AAC/MPEG2/", strlen( "A_AAC/MPEG2/" ) ) ||
 943                  !strncmp( p_tk->psz_codec, "A_AAC/MPEG4/", strlen( "A_AAC/MPEG4/" ) ) )
 944         {
 945             int i_profile, i_srate, sbr = 0;
 946             static const unsigned int i_sample_rates[] =
 947             {
 948                     96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
 949                     16000, 12000, 11025,  8000,  7350,     0,     0,     0
 950             };
 951
 952             p_tk->fmt.i_codec = VLC_CODEC_MP4A;
 953             /* create data for faad (MP4DecSpecificDescrTag)*/
 954
 955             if( !strcmp( &p_tk->psz_codec[12], "MAIN" ) )
 956             {
 957                 i_profile = 0;
 958             }
 959             else if( !strcmp( &p_tk->psz_codec[12], "LC" ) )
 960             {
 961                 i_profile = 1;
 962             }
 963             else if( !strcmp( &p_tk->psz_codec[12], "SSR" ) )
 964             {
 965                 i_profile = 2;
 966             }
 967             else if( !strcmp( &p_tk->psz_codec[12], "LC/SBR" ) )
 968             {
 969                 i_profile = 1;
 970                 sbr = 1;
 971             }
 972             else
 973             {
 974                 i_profile = 3;
 975             }
 976
 977             for( i_srate = 0; i_srate < 13; i_srate++ )
 978             {
 979                 if( i_sample_rates[i_srate] == p_tk->i_original_rate )
 980                 {
 981                     break;
 982                 }
 983             }
 984             msg_Dbg( &sys.demuxer, "profile=%d srate=%d", i_profile, i_srate );
 985
 986             p_tk->fmt.i_extra = sbr ? 5 : 2;
 987             p_tk->fmt.p_extra = xmalloc( p_tk->fmt.i_extra );
 988             ((uint8_t*)p_tk->fmt.p_extra)[0] = ((i_profile + 1) << 3) | ((i_srate&0xe) >> 1);
 989             ((uint8_t*)p_tk->fmt.p_extra)[1] = ((i_srate & 0x1) << 7) | (p_tk->fmt.audio.i_channels << 3);
 990             if (sbr != 0)
 991             {
 992                 int syncExtensionType = 0x2B7;
 993                 int iDSRI;
 994                 for (iDSRI=0; iDSRI<13; iDSRI++)
 995                     if( i_sample_rates[iDSRI] == p_tk->fmt.audio.i_rate )
 996                         break;
 997                 ((uint8_t*)p_tk->fmt.p_extra)[2] = (syncExtensionType >> 3) & 0xFF;
 998                 ((uint8_t*)p_tk->fmt.p_extra)[3] = ((syncExtensionType & 0x7) << 5) | 5;
 999                 ((uint8_t*)p_tk->fmt.p_extra)[4] = ((1 & 0x1) << 7) | (iDSRI << 3);
1000             }
1001         }
1002         else if( !strcmp( p_tk->psz_codec, "A_AAC" ) )
1003         {
1004             p_tk->fmt.i_codec = VLC_CODEC_MP4A;
1005             fill_extra_data( p_tk );
1006         }
1007         else if( !strcmp( p_tk->psz_codec, "A_WAVPACK4" ) )
1008         {
1009             p_tk->fmt.i_codec = VLC_CODEC_WAVPACK;
1010             fill_extra_data( p_tk );
1011         }
1012         else if( !strcmp( p_tk->psz_codec, "A_TTA1" ) )
1013         {
1014             p_fmt->i_codec = VLC_CODEC_TTA;
1015             if( p_tk->i_extra_data > 0 )
1016             {
1017                 fill_extra_data( p_tk );
1018             }
1019             else
1020             {
1021                 p_fmt->i_extra = 30;
1022                 p_fmt->p_extra = xmalloc( p_fmt->i_extra );
1023                 uint8_t *p_extra = (uint8_t*)p_fmt->p_extra;
1024                 memcpy( &p_extra[ 0], "TTA1", 4 );
1025                 SetWLE( &p_extra[ 4], 1 );
1026                 SetWLE( &p_extra[ 6], p_fmt->audio.i_channels );
1027                 SetWLE( &p_extra[ 8], p_fmt->audio.i_bitspersample );
1028                 SetDWLE( &p_extra[10], p_fmt->audio.i_rate );
1029                 SetDWLE( &p_extra[14], 0xffffffff );
1030                 memset( &p_extra[18], 0, 30  - 18 );
1031             }
1032         }
1033         else if( !strcmp( p_tk->psz_codec, "A_PCM/INT/BIG" ) ||
1034                  !strcmp( p_tk->psz_codec, "A_PCM/INT/LIT" ) ||
1035                  !strcmp( p_tk->psz_codec, "A_PCM/FLOAT/IEEE" ) )
1036         {
1037             if( !strcmp( p_tk->psz_codec, "A_PCM/INT/BIG" ) )
1038             {
1039                 p_tk->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1040             }
1041             else
1042             {
1043                 p_tk->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1044             }
1045             p_tk->fmt.audio.i_blockalign = ( p_tk->fmt.audio.i_bitspersample + 7 ) / 8 * p_tk->fmt.audio.i_channels;
1046         }
1047         else if( !strncmp( p_tk->psz_codec, "A_REAL/", 7 ) )
1048         {
1049             if( !strcmp( p_tk->psz_codec, "A_REAL/COOK" ) )
1050                 p_tk->fmt.i_codec = VLC_CODEC_COOK;
1051             else if( !strcmp( p_tk->psz_codec, "A_REAL/ATRC" ) )
1052                 p_tk->fmt.i_codec = VLC_CODEC_ATRAC3;
1053             else if( !strcmp( p_tk->psz_codec, "A_REAL/28_8" ) )
1054                 p_tk->fmt.i_codec = VLC_CODEC_RA_288;
1055             /* FIXME 14_4, RALF and SIPR */
1056             fill_extra_data( p_tk );
1057         }
1058         else if( !strcmp( p_tk->psz_codec, "A_REAL/14_4" ) )
1059         {
1060             p_fmt->i_codec = VLC_CODEC_RA_144;
1061             p_fmt->audio.i_channels = 1;
1062             p_fmt->audio.i_rate = 8000;
1063             p_fmt->audio.i_blockalign = 0x14;
1064         }
1065         /* disabled due to the potential "S_KATE" namespace issue */
1066         else if( !strcmp( p_tk->psz_codec, "S_KATE" ) )
1067         {
1068             int i, i_offset = 1, i_extra, num_headers, size_so_far;
1069             uint8_t *p_extra;
1070
1071             p_tk->fmt.i_codec = VLC_CODEC_KATE;
1072             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1073
1074             fill_extra_data( p_tk );
1075         }
1076         else if( !strcmp( p_tk->psz_codec, "S_TEXT/ASCII" ) )
1077         {
1078             p_fmt->i_codec = VLC_CODEC_SUBT;
1079             p_fmt->subs.psz_encoding = NULL; /* Is there a place where it is stored ? */
1080         }
1081         else if( !strcmp( p_tk->psz_codec, "S_TEXT/UTF8" ) )
1082         {
1083             p_tk->fmt.i_codec = VLC_CODEC_SUBT;
1084             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1085         }
1086         else if( !strcmp( p_tk->psz_codec, "S_TEXT/USF" ) )
1087         {
1088             p_tk->fmt.i_codec = VLC_FOURCC( 'u', 's', 'f', ' ' );
1089             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1090             if( p_tk->i_extra_data )
1091             {
1092                 fill_extra_data( p_tk );
1093             }
1094         }
1095         else if( !strcmp( p_tk->psz_codec, "S_TEXT/SSA" ) ||
1096                  !strcmp( p_tk->psz_codec, "S_TEXT/ASS" ) ||
1097                  !strcmp( p_tk->psz_codec, "S_SSA" ) ||
1098                  !strcmp( p_tk->psz_codec, "S_ASS" ))
1099         {
1100             p_tk->fmt.i_codec = VLC_CODEC_SSA;
1101             p_tk->fmt.subs.psz_encoding = strdup( "UTF-8" );
1102             if( p_tk->i_extra_data )
1103             {
1104                 fill_extra_data( p_tk );
1105             }
1106         }
1107         else if( !strcmp( p_tk->psz_codec, "S_VOBSUB" ) )
1108         {
1109             p_tk->fmt.i_codec = VLC_CODEC_SPU;
1110             if( p_tk->i_extra_data )
1111             {
1112                 char *psz_start;
1113                 char *psz_buf = (char *)malloc( p_tk->i_extra_data + 1);
1114                 if( psz_buf != NULL )
1115                 {
1116                     memcpy( psz_buf, p_tk->p_extra_data , p_tk->i_extra_data );
1117                     psz_buf[p_tk->i_extra_data] = '\0';
1118
1119                     psz_start = strstr( psz_buf, "size:" );
1120                     if( psz_start &&
1121                         vobsub_size_parse( psz_start,
1122                                            &p_tk->fmt.subs.spu.i_original_frame_width,
1123                                            &p_tk->fmt.subs.spu.i_original_frame_height ) == VLC_SUCCESS )
1124                     {
1125                         msg_Dbg( &sys.demuxer, "original frame size vobsubs: %dx%d",
1126                                  p_tk->fmt.subs.spu.i_original_frame_width,
1127                                  p_tk->fmt.subs.spu.i_original_frame_height );
1128                     }
1129                     else
1130                     {
1131                         msg_Warn( &sys.demuxer, "reading original frame size for vobsub failed" );
1132                     }
1133
1134                     psz_start = strstr( psz_buf, "palette:" );
1135                     if( psz_start &&
1136                         vobsub_palette_parse( psz_start, &p_tk->fmt.subs.spu.palette[1] ) == VLC_SUCCESS )
1137                     {
1138                         p_tk->fmt.subs.spu.palette[0] =  0xBeef;
1139                         msg_Dbg( &sys.demuxer, "vobsub palette read" );
1140                     }
1141                     else
1142                     {
1143                         msg_Warn( &sys.demuxer, "reading original palette failed" );
1144                     }
1145                     free( psz_buf );
1146                 }
1147             }
1148         }
1149         else if( !strcmp( p_tk->psz_codec, "S_HDMV/PGS" ) )
1150         {
1151             p_tk->fmt.i_codec = VLC_CODEC_BD_PG;
1152         }
1153         else if( !strcmp( p_tk->psz_codec, "B_VOBBTN" ) )
1154         {
1155             p_tk->fmt.i_cat = NAV_ES;
1156             continue;
1157         }
1158         else
1159         {
1160             msg_Err( &sys.demuxer, "unknown codec id=`%s'", p_tk->psz_codec );
1161             p_tk->fmt.i_codec = VLC_FOURCC( 'u', 'n', 'd', 'f' );
1162         }
1163         if( p_tk->b_default )
1164         {
1165             p_tk->fmt.i_priority = 1000;
1166         }
1167
1168         p_tk->p_es = es_out_Add( sys.demuxer.out, &p_tk->fmt );
1169
1170         /* Turn on a subtitles track if it has been flagged as default -
1171          * but only do this if no subtitles track has already been engaged,
1172          * either by an earlier 'default track' (??) or by default
1173          * language choice behaviour.
1174          */
1175         if( p_tk->b_default )
1176         {
1177             es_out_Control( sys.demuxer.out,
1178                             ES_OUT_SET_ES_DEFAULT,
1179                             p_tk->p_es );
1180         }
1181     }
1182     es_out_Control( sys.demuxer.out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_start_time );
1183
1184     sys.i_start_pts = i_start_time;
1185     // reset the stream reading to the first cluster of the segment used
1186     es.I_O().setFilePointer( i_start_pos );
1187
1188     delete ep;
1189     ep = new EbmlParser( &es, segment, &sys.demuxer );
1190
1191     return true;
1192 }
1193
1194 void matroska_segment_c::UnSelect( )
1195 {
1196     for( size_t i_track = 0; i_track < tracks.size(); i_track++ )
1197     {
1198         if ( tracks[i_track]->p_es != NULL )
1199         {
1200 //            es_format_Clean( &tracks[i_track]->fmt );
1201             es_out_Del( sys.demuxer.out, tracks[i_track]->p_es );
1202             tracks[i_track]->p_es = NULL;
1203         }
1204     }
1205     delete ep;
1206     ep = NULL;
1207 }
1208
1209 int matroska_segment_c::BlockGet( KaxBlock * & pp_block, KaxSimpleBlock * & pp_simpleblock, bool *pb_key_picture, bool *pb_discardable_picture, int64_t *pi_duration )
1210 {
1211     pp_simpleblock = NULL;
1212     pp_block = NULL;
1213
1214     *pb_key_picture         = true;
1215     *pb_discardable_picture = false;
1216
1217     for( ;; )
1218     {
1219         EbmlElement *el = NULL;
1220         int         i_level;
1221
1222         if ( ep == NULL )
1223             return VLC_EGENERIC;
1224
1225         if( pp_simpleblock != NULL || ((el = ep->Get()) == NULL && pp_block != NULL) )
1226         {
1227             /* Check blocks validity to protect againts broken files */
1228             if( BlockFindTrackIndex( NULL, pp_block , pp_simpleblock ) )
1229             {
1230                 delete pp_block;
1231                 pp_simpleblock = NULL;
1232                 pp_block = NULL;
1233                 continue;
1234             }
1235             if( pp_simpleblock != NULL )
1236             {
1237                 *pb_key_picture         = pp_simpleblock->IsKeyframe();
1238                 *pb_discardable_picture = pp_simpleblock->IsDiscardable();
1239             }
1240
1241             /* update the index */
1242 #define idx p_indexes[i_index - 1]
1243             if( i_index > 0 && idx.i_time == -1 )
1244             {
1245                 if ( pp_simpleblock != NULL )
1246                     idx.i_time        = pp_simpleblock->GlobalTimecode() / (mtime_t)1000;
1247                 else
1248                     idx.i_time        = (*pp_block).GlobalTimecode() / (mtime_t)1000;
1249                 idx.b_key         = *pb_key_picture;
1250             }
1251 #undef idx
1252             return VLC_SUCCESS;
1253         }
1254
1255         i_level = ep->GetLevel();
1256
1257         if( el == NULL )
1258         {
1259             if( i_level > 1 )
1260             {
1261                 ep->Up();
1262                 continue;
1263             }
1264             msg_Warn( &sys.demuxer, "EOF" );
1265             return VLC_EGENERIC;
1266         }
1267
1268         /* Verify that we are still inside our cluster
1269          * It can happens whith broken files and when seeking
1270          * without index */
1271         if( i_level > 1 )
1272         {
1273             if( cluster && !ep->IsTopPresent( cluster ) )
1274             {
1275                 msg_Warn( &sys.demuxer, "Unexpected escape from current cluster" );
1276                 cluster = NULL;
1277             }
1278             if( !cluster )
1279                 continue;
1280         }
1281
1282         /* do parsing */
1283         switch ( i_level )
1284         {
1285         case 1:
1286             if( MKV_IS_ID( el, KaxCluster ) )
1287             {
1288                 cluster = (KaxCluster*)el;
1289                 i_cluster_pos = cluster->GetElementPosition();
1290
1291                 /* add it to the index */
1292                 if( i_index == 0 ||
1293                     ( i_index > 0 && p_indexes[i_index - 1].i_position < (int64_t)cluster->GetElementPosition() ) )
1294                 {
1295                     IndexAppendCluster( cluster );
1296                 }
1297
1298                 // reset silent tracks
1299                 for (size_t i=0; i<tracks.size(); i++)
1300                 {
1301                     tracks[i]->b_silent = false;
1302                 }
1303
1304                 ep->Down();
1305             }
1306             else if( MKV_IS_ID( el, KaxCues ) )
1307             {
1308                 msg_Warn( &sys.demuxer, "find KaxCues FIXME" );
1309                 return VLC_EGENERIC;
1310             }
1311             else
1312             {
1313                 msg_Dbg( &sys.demuxer, "unknown (%s)", typeid( el ).name() );
1314             }
1315             break;
1316         case 2:
1317             if( MKV_IS_ID( el, KaxClusterTimecode ) )
1318             {
1319                 KaxClusterTimecode &ctc = *(KaxClusterTimecode*)el;
1320
1321                 ctc.ReadData( es.I_O(), SCOPE_ALL_DATA );
1322                 cluster->InitTimecode( uint64( ctc ), i_timescale );
1323             }
1324             else if( MKV_IS_ID( el, KaxClusterSilentTracks ) )
1325             {
1326                 ep->Down();
1327             }
1328             else if( MKV_IS_ID( el, KaxBlockGroup ) )
1329             {
1330                 i_block_pos = el->GetElementPosition();
1331                 ep->Down();
1332             }
1333             else if( MKV_IS_ID( el, KaxSimpleBlock ) )
1334             {
1335                 pp_simpleblock = (KaxSimpleBlock*)el;
1336
1337                 pp_simpleblock->ReadData( es.I_O() );
1338                 pp_simpleblock->SetParent( *cluster );
1339             }
1340             break;
1341         case 3:
1342             if( MKV_IS_ID( el, KaxBlock ) )
1343             {
1344                 pp_block = (KaxBlock*)el;
1345
1346                 pp_block->ReadData( es.I_O() );
1347                 pp_block->SetParent( *cluster );
1348
1349                 ep->Keep();
1350             }
1351             else if( MKV_IS_ID( el, KaxBlockDuration ) )
1352             {
1353                 KaxBlockDuration &dur = *(KaxBlockDuration*)el;
1354
1355                 dur.ReadData( es.I_O() );
1356                 *pi_duration = uint64( dur );
1357             }
1358             else if( MKV_IS_ID( el, KaxReferenceBlock ) )
1359             {
1360                 KaxReferenceBlock &ref = *(KaxReferenceBlock*)el;
1361
1362                 ref.ReadData( es.I_O() );
1363
1364                 if( *pb_key_picture )
1365                     *pb_key_picture = false;
1366                 else if( int64( ref ) > 0 )
1367                     *pb_discardable_picture = true;
1368             }
1369             else if( MKV_IS_ID( el, KaxClusterSilentTrackNumber ) )
1370             {
1371                 KaxClusterSilentTrackNumber &track_num = *(KaxClusterSilentTrackNumber*)el;
1372                 track_num.ReadData( es.I_O() );
1373                 // find the track
1374                 for (size_t i=0; i<tracks.size(); i++)
1375                 {
1376                     if ( tracks[i]->i_number == uint32(track_num))
1377                     {
1378                         tracks[i]->b_silent = true;
1379                         break;
1380                     }
1381                 }
1382             }
1383             break;
1384         default:
1385             msg_Err( &sys.demuxer, "invalid level = %d", i_level );
1386             return VLC_EGENERIC;
1387         }
1388     }
1389 }
1390