1 /*****************************************************************************
2 * mkv.cpp : matroska demuxer
3 *****************************************************************************
4 * Copyright (C) 2003-2005, 2008, 2010 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Steve Lhomme <steve.lhomme@free.fr>
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.
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.
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 *****************************************************************************/
28 #include "matroska_segment.hpp"
31 #include "chapters.hpp"
32 #include "Ebml_parser.hpp"
34 #include "stream_io_callback.hpp"
39 /*****************************************************************************
41 *****************************************************************************/
42 static int Open ( vlc_object_t * );
43 static void Close( vlc_object_t * );
46 set_shortname( "Matroska" )
47 set_description( N_("Matroska stream demuxer" ) )
48 set_capability( "demux", 50 )
49 set_callbacks( Open, Close )
50 set_category( CAT_INPUT )
51 set_subcategory( SUBCAT_INPUT_DEMUX )
53 add_bool( "mkv-use-ordered-chapters", true,
54 N_("Respect ordered chapters"),
55 N_("Play chapters in the order specified in the segment."), false );
57 add_bool( "mkv-use-chapter-codec", true,
59 N_("Use chapter codecs found in the segment."), true );
61 add_bool( "mkv-preload-local-dir", true,
62 N_("Preload MKV files in the same directory"),
63 N_("Preload matroska files in the same directory to find linked segments (not good for broken files)."), false );
65 add_bool( "mkv-seek-percent", false,
66 N_("Seek based on percent not time"),
67 N_("Seek based on percent not time."), true );
69 add_bool( "mkv-use-dummy", false,
71 N_("Read and discard unknown EBML elements (not good for broken files)."), true );
73 add_shortcut( "mka", "mkv" )
78 static int Demux ( demux_t * );
79 static int Control( demux_t *, int, va_list );
80 static void Seek ( demux_t *, mtime_t i_date, double f_percent, virtual_chapter_c *p_chapter );
82 /*****************************************************************************
83 * Open: initializes matroska demux structures
84 *****************************************************************************/
85 static int Open( vlc_object_t * p_this )
87 demux_t *p_demux = (demux_t*)p_this;
89 matroska_stream_c *p_stream;
90 matroska_segment_c *p_segment;
91 const uint8_t *p_peek;
92 std::string s_path, s_filename;
93 vlc_stream_io_callback *p_io_callback;
94 EbmlStream *p_io_stream;
95 bool b_need_preload = false;
97 /* peek the begining */
98 if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 ) return VLC_EGENERIC;
100 /* is a valid file */
101 if( p_peek[0] != 0x1a || p_peek[1] != 0x45 ||
102 p_peek[2] != 0xdf || p_peek[3] != 0xa3 ) return VLC_EGENERIC;
104 /* Set the demux function */
105 p_demux->pf_demux = Demux;
106 p_demux->pf_control = Control;
107 p_demux->p_sys = p_sys = new demux_sys_t( *p_demux );
109 p_io_callback = new vlc_stream_io_callback( p_demux->s, false );
110 p_io_stream = new EbmlStream( *p_io_callback );
112 if( p_io_stream == NULL )
114 msg_Err( p_demux, "failed to create EbmlStream" );
115 delete p_io_callback;
120 p_stream = p_sys->AnalyseAllSegmentsFound( p_demux, p_io_stream, true );
121 if( p_stream == NULL )
123 msg_Err( p_demux, "cannot find KaxSegment or missing mandatory KaxInfo" );
126 p_sys->streams.push_back( p_stream );
128 p_stream->p_io_callback = p_io_callback;
129 p_stream->p_estream = p_io_stream;
131 for (size_t i=0; i<p_stream->segments.size(); i++)
133 p_stream->segments[i]->Preload();
134 b_need_preload |= p_stream->segments[i]->b_ref_external_segments;
137 p_segment = p_stream->segments[0];
138 if( p_segment->cluster == NULL )
140 msg_Err( p_demux, "cannot find any cluster, damaged file ?" );
144 if (b_need_preload && var_InheritBool( p_demux, "mkv-preload-local-dir" ))
146 msg_Dbg( p_demux, "Preloading local dir" );
147 /* get the files from the same dir from the same family (based on p_demux->psz_path) */
148 if ( p_demux->psz_file && !strcmp( p_demux->psz_access, "file" ) )
150 // assume it's a regular file
151 // get the directory path
152 s_path = p_demux->psz_file;
153 if (s_path.at(s_path.length() - 1) == DIR_SEP_CHAR)
155 s_path = s_path.substr(0,s_path.length()-1);
159 if (s_path.find_last_of(DIR_SEP_CHAR) > 0)
161 s_path = s_path.substr(0,s_path.find_last_of(DIR_SEP_CHAR));
165 DIR *p_src_dir = vlc_opendir(s_path.c_str());
167 if (p_src_dir != NULL)
170 while ((psz_file = vlc_readdir(p_src_dir)) != NULL)
172 if (strlen(psz_file) > 4)
174 s_filename = s_path + DIR_SEP_CHAR + psz_file;
176 #if defined(WIN32) || defined(__OS2__)
177 if (!strcasecmp(s_filename.c_str(), p_demux->psz_file))
179 if (!s_filename.compare(p_demux->psz_file))
183 continue; // don't reuse the original opened file
186 if (!s_filename.compare(s_filename.length() - 3, 3, "mkv") ||
187 !s_filename.compare(s_filename.length() - 3, 3, "mka"))
189 // test whether this file belongs to our family
190 const uint8_t *p_peek;
191 bool file_ok = false;
192 #warning Memory leak!
193 std::string s_url = vlc_path2uri( s_filename.c_str(), "file" );
194 stream_t *p_file_stream = stream_UrlNew(
197 /* peek the begining */
199 stream_Peek( p_file_stream, &p_peek, 4 ) >= 4
200 && p_peek[0] == 0x1a && p_peek[1] == 0x45 &&
201 p_peek[2] == 0xdf && p_peek[3] == 0xa3 ) file_ok = true;
205 vlc_stream_io_callback *p_file_io = new vlc_stream_io_callback( p_file_stream, true );
206 EbmlStream *p_estream = new EbmlStream(*p_file_io);
208 p_stream = p_sys->AnalyseAllSegmentsFound( p_demux, p_estream );
210 if ( p_stream == NULL )
212 msg_Dbg( p_demux, "the file '%s' will not be used", s_filename.c_str() );
218 p_stream->p_io_callback = p_file_io;
219 p_stream->p_estream = p_estream;
220 p_sys->streams.push_back( p_stream );
225 if( p_file_stream ) {
226 stream_Delete( p_file_stream );
228 msg_Dbg( p_demux, "the file '%s' cannot be opened", s_filename.c_str() );
234 closedir( p_src_dir );
238 p_sys->PreloadFamily( *p_segment );
240 else if (b_need_preload)
241 msg_Warn( p_demux, "This file references other files, you may want to enable the preload of local directory");
243 if ( !p_sys->PreloadLinked() ||
244 !p_sys->PreparePlayback( NULL ) )
246 msg_Err( p_demux, "cannot use the segment" );
259 /*****************************************************************************
260 * Close: frees unused data
261 *****************************************************************************/
262 static void Close( vlc_object_t *p_this )
264 demux_t *p_demux = (demux_t*)p_this;
265 demux_sys_t *p_sys = p_demux->p_sys;
266 virtual_segment_c *p_vsegment = p_sys->p_current_segment;
269 matroska_segment_c *p_segment = p_vsegment->CurrentSegment();
271 p_segment->UnSelect();
277 /*****************************************************************************
279 *****************************************************************************/
280 static int Control( demux_t *p_demux, int i_query, va_list args )
282 demux_sys_t *p_sys = p_demux->p_sys;
289 input_attachment_t ***ppp_attach;
294 case DEMUX_GET_ATTACHMENTS:
295 ppp_attach = (input_attachment_t***)va_arg( args, input_attachment_t*** );
296 pi_int = (int*)va_arg( args, int * );
298 if( p_sys->stored_attachments.size() <= 0 )
301 *pi_int = p_sys->stored_attachments.size();
302 *ppp_attach = (input_attachment_t**)malloc( sizeof(input_attachment_t**) *
303 p_sys->stored_attachments.size() );
306 for( size_t i = 0; i < p_sys->stored_attachments.size(); i++ )
308 attachment_c *a = p_sys->stored_attachments[i];
309 (*ppp_attach)[i] = vlc_input_attachment_New( a->fileName(), a->mimeType(), NULL,
310 a->p_data, a->size() );
315 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
316 vlc_meta_Merge( p_meta, p_sys->meta );
319 case DEMUX_GET_LENGTH:
320 pi64 = (int64_t*)va_arg( args, int64_t * );
321 if( p_sys->f_duration > 0.0 )
323 *pi64 = (int64_t)(p_sys->f_duration * 1000);
328 case DEMUX_GET_POSITION:
329 pf = (double*)va_arg( args, double * );
330 if ( p_sys->f_duration > 0.0 )
331 *pf = (double)(p_sys->i_pts >= p_sys->i_start_pts ? p_sys->i_pts : p_sys->i_start_pts ) / (1000.0 * p_sys->f_duration);
334 case DEMUX_SET_POSITION:
335 if( p_sys->f_duration > 0.0 )
337 f = (double)va_arg( args, double );
338 Seek( p_demux, -1, f, NULL );
344 pi64 = (int64_t*)va_arg( args, int64_t * );
345 *pi64 = p_sys->i_pts;
348 case DEMUX_GET_TITLE_INFO:
349 if( p_sys->titles.size() > 1 || ( p_sys->titles.size() == 1 && p_sys->titles[0]->i_seekpoint > 0 ) )
351 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
352 int *pi_int = (int*)va_arg( args, int* );
354 *pi_int = p_sys->titles.size();
355 *ppp_title = (input_title_t**)malloc( sizeof( input_title_t**) * p_sys->titles.size() );
357 for( size_t i = 0; i < p_sys->titles.size(); i++ )
359 (*ppp_title)[i] = vlc_input_title_Duplicate( p_sys->titles[i] );
365 case DEMUX_SET_TITLE:
366 /* TODO handle editions as titles */
367 i_idx = (int)va_arg( args, int );
368 if( i_idx < p_sys->used_segments.size() )
370 p_sys->JumpTo( *p_sys->used_segments[i_idx], NULL );
375 case DEMUX_SET_SEEKPOINT:
376 i_skp = (int)va_arg( args, int );
378 // TODO change the way it works with the << & >> buttons on the UI (+1/-1 instead of a number)
379 if( p_sys->titles.size() && i_skp < p_sys->titles[p_sys->i_current_title]->i_seekpoint)
381 Seek( p_demux, (int64_t)p_sys->titles[p_sys->i_current_title]->seekpoint[i_skp]->i_time_offset, -1, NULL);
382 p_demux->info.i_seekpoint |= INPUT_UPDATE_SEEKPOINT;
383 p_demux->info.i_seekpoint = i_skp;
389 pf = (double *)va_arg( args, double * );
391 if( p_sys->p_current_segment && p_sys->p_current_segment->CurrentSegment() )
393 const matroska_segment_c *p_segment = p_sys->p_current_segment->CurrentSegment();
394 for( size_t i = 0; i < p_segment->tracks.size(); i++ )
396 mkv_track_t *tk = p_segment->tracks[i];
397 if( tk->fmt.i_cat == VIDEO_ES && tk->fmt.video.i_frame_rate_base > 0 )
399 *pf = (double)tk->fmt.video.i_frame_rate / tk->fmt.video.i_frame_rate_base;
407 i64 = (int64_t) va_arg( args, int64_t );
408 msg_Dbg(p_demux,"SET_TIME to %"PRId64, i64 );
409 Seek( p_demux, i64, -1, NULL );
417 static void Seek( demux_t *p_demux, mtime_t i_date, double f_percent, virtual_chapter_c *p_chapter )
419 demux_sys_t *p_sys = p_demux->p_sys;
420 virtual_segment_c *p_vsegment = p_sys->p_current_segment;
421 matroska_segment_c *p_segment = p_vsegment->CurrentSegment();
422 mtime_t i_time_offset = 0;
423 int64_t i_global_position = -1;
427 msg_Dbg( p_demux, "seek request to %"PRId64" (%f%%)", i_date, f_percent );
428 if( i_date < 0 && f_percent < 0 )
430 msg_Warn( p_demux, "cannot seek nowhere!" );
433 if( f_percent > 1.0 )
435 msg_Warn( p_demux, "cannot seek so far!" );
438 if( p_sys->f_duration < 0 )
440 msg_Warn( p_demux, "cannot seek without duration!");
444 /* seek without index or without date */
445 if( f_percent >= 0 && (var_InheritBool( p_demux, "mkv-seek-percent" ) || !p_segment->b_cues || i_date < 0 ))
447 i_date = int64_t( f_percent * p_sys->f_duration * 1000.0 );
448 if( !p_segment->b_cues )
450 int64_t i_pos = int64_t( f_percent * stream_Size( p_demux->s ) );
452 msg_Dbg( p_demux, "lengthy way of seeking for pos:%"PRId64, i_pos );
453 for( i_index = 0; i_index < p_segment->i_index; i_index++ )
455 if( p_segment->p_indexes[i_index].i_position >= i_pos &&
456 p_segment->p_indexes[i_index].i_time > 0 )
459 if( i_index == p_segment->i_index )
462 if( p_segment->p_indexes[i_index].i_position < i_pos )
464 msg_Dbg( p_demux, "no cues, seek request to global pos: %"PRId64, i_pos );
465 i_global_position = i_pos;
469 p_vsegment->Seek( *p_demux, i_date, i_time_offset, p_chapter, i_global_position );
472 /* Needed by matroska_segment::Seek() and Seek */
473 void BlockDecode( demux_t *p_demux, KaxBlock *block, KaxSimpleBlock *simpleblock,
474 mtime_t i_pts, mtime_t i_duration, bool f_mandatory )
476 demux_sys_t *p_sys = p_demux->p_sys;
477 matroska_segment_c *p_segment = p_sys->p_current_segment->CurrentSegment();
479 if( !p_segment ) return;
482 if( p_segment->BlockFindTrackIndex( &i_track, block, simpleblock ) )
484 msg_Err( p_demux, "invalid track number" );
488 mkv_track_t *tk = p_segment->tracks[i_track];
490 if( tk->fmt.i_cat != NAV_ES && tk->p_es == NULL )
492 msg_Err( p_demux, "unknown track number" );
495 if( i_pts + i_duration < p_sys->i_start_pts && tk->fmt.i_cat == AUDIO_ES )
497 return; /* discard audio packets that shouldn't be rendered */
500 if ( tk->fmt.i_cat != NAV_ES )
503 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
507 tk->b_inited = false;
513 /* First send init data */
514 if( !tk->b_inited && tk->i_data_init > 0 )
518 msg_Dbg( p_demux, "sending header (%d bytes)", tk->i_data_init );
519 p_init = MemToBlock( tk->p_data_init, tk->i_data_init, 0 );
520 if( p_init ) es_out_Send( p_demux->out, tk->p_es, p_init );
525 size_t frame_size = 0;
526 size_t block_size = 0;
528 if( simpleblock != NULL )
529 block_size = simpleblock->GetSize();
531 block_size = block->GetSize();
533 for( unsigned int i = 0;
534 ( block != NULL && i < block->NumberFrames()) || ( simpleblock != NULL && i < simpleblock->NumberFrames() );
539 if( simpleblock != NULL )
541 data = &simpleblock->GetBuffer(i);
542 // condition when the DTS is correct (keyframe or B frame == NOT P frame)
543 f_mandatory = simpleblock->IsDiscardable() || simpleblock->IsKeyframe();
547 data = &block->GetBuffer(i);
548 // condition when the DTS is correct (keyframe or B frame == NOT P frame)
550 frame_size += data->Size();
551 if( !data->Buffer() || data->Size() > SIZE_MAX || frame_size > block_size )
553 msg_Warn( p_demux, "Cannot read frame (too long or no frame)" );
557 if( tk->i_compression_type == MATROSKA_COMPRESSION_HEADER && tk->p_compression_data != NULL )
558 p_block = MemToBlock( data->Buffer(), data->Size(), tk->p_compression_data->GetSize() );
560 p_block = MemToBlock( data->Buffer(), data->Size(), 0 );
562 if( p_block == NULL )
567 #if defined(HAVE_ZLIB_H)
568 if( tk->i_compression_type == MATROSKA_COMPRESSION_ZLIB )
570 p_block = block_zlib_decompress( VLC_OBJECT(p_demux), p_block );
571 if( p_block == NULL )
576 if( tk->i_compression_type == MATROSKA_COMPRESSION_HEADER )
578 memcpy( p_block->p_buffer, tk->p_compression_data->GetBuffer(), tk->p_compression_data->GetSize() );
581 if( tk->fmt.i_codec == VLC_CODEC_COOK ||
582 tk->fmt.i_codec == VLC_CODEC_ATRAC3 )
584 handle_real_audio(p_demux, tk, p_block, i_pts);
585 block_Release(p_block);
586 i_pts = ( tk->i_default_duration )?
587 i_pts + ( mtime_t )( tk->i_default_duration / 1000 ):
592 if ( tk->fmt.i_cat == NAV_ES )
594 // TODO handle the start/stop times of this packet
595 p_sys->p_ev->SetPci( (const pci_t *)&p_block->p_buffer[1]);
596 block_Release( p_block );
599 // correct timestamping when B frames are used
600 if( tk->fmt.i_cat != VIDEO_ES )
602 p_block->i_dts = p_block->i_pts = i_pts;
608 p_block->i_pts = VLC_TS_INVALID;
609 p_block->i_dts = i_pts;
611 else if( tk->b_pts_only )
613 p_block->i_pts = i_pts;
614 p_block->i_dts = i_pts;
618 p_block->i_pts = i_pts;
620 p_block->i_dts = p_block->i_pts;
622 p_block->i_dts = min( i_pts, tk->i_last_dts + ( mtime_t )( tk->i_default_duration / 1000 ) );
625 if( tk->fmt.i_cat == VIDEO_ES || tk->fmt.i_cat == AUDIO_ES )
626 tk->i_last_dts = p_block->i_dts;
629 msg_Dbg( p_demux, "block i_dts: %"PRId64" / i_pts: %"PRId64, p_block->i_dts, p_block->i_pts);
631 if( strcmp( tk->psz_codec, "S_VOBSUB" ) )
633 p_block->i_length = i_duration * 1000;
636 /* FIXME remove when VLC_TS_INVALID work is done */
637 if( i == 0 || p_block->i_dts > VLC_TS_INVALID )
638 p_block->i_dts += VLC_TS_0;
639 if( !tk->b_dts_only && ( i == 0 || p_block->i_pts > VLC_TS_INVALID ) )
640 p_block->i_pts += VLC_TS_0;
642 es_out_Send( p_demux->out, tk->p_es, p_block );
644 /* use time stamp only for first block */
645 i_pts = ( tk->i_default_duration )?
646 i_pts + ( mtime_t )( tk->i_default_duration / 1000 ):
651 /*****************************************************************************
652 * Demux: reads and demuxes data packets
653 *****************************************************************************
654 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
655 *****************************************************************************/
656 static int Demux( demux_t *p_demux)
658 demux_sys_t *p_sys = p_demux->p_sys;
660 vlc_mutex_lock( &p_sys->lock_demuxer );
662 virtual_segment_c *p_vsegment = p_sys->p_current_segment;
663 matroska_segment_c *p_segment = p_vsegment->CurrentSegment();
664 if ( p_segment == NULL ) return 0;
665 int i_block_count = 0;
670 if ( p_sys->demuxer.b_die )
673 if( p_sys->i_pts >= p_sys->i_start_pts )
674 if ( p_vsegment->UpdateCurrentToChapter( *p_demux ) )
680 if ( p_vsegment->CurrentEdition() &&
681 p_vsegment->CurrentEdition()->b_ordered &&
682 p_vsegment->CurrentChapter() == NULL )
683 /* nothing left to read in this ordered edition */
687 KaxSimpleBlock *simpleblock;
688 int64_t i_block_duration = 0;
690 bool b_discardable_picture;
691 if( p_segment->BlockGet( block, simpleblock, &b_key_picture, &b_discardable_picture, &i_block_duration ) )
693 if ( p_vsegment->CurrentEdition() && p_vsegment->CurrentEdition()->b_ordered )
695 const virtual_chapter_c *p_chap = p_vsegment->CurrentChapter();
696 // check if there are more chapters to read
697 if ( p_chap != NULL )
699 /* TODO handle successive chapters with the same user_start_time/user_end_time
701 p_sys->i_pts = p_chap->i_virtual_stop_time;
702 p_sys->i_pts++; // trick to avoid staying on segments with no duration and no content
711 msg_Warn( p_demux, "cannot get block EOF?" );
716 if( simpleblock != NULL )
717 p_sys->i_pts = p_sys->i_chapter_time + ( simpleblock->GlobalTimecode() / (mtime_t) 1000 );
719 p_sys->i_pts = p_sys->i_chapter_time + ( block->GlobalTimecode() / (mtime_t) 1000 );
721 mtime_t i_pcr = VLC_TS_INVALID;
722 for( size_t i = 0; i < p_segment->tracks.size(); i++)
723 if( p_segment->tracks[i]->i_last_dts > VLC_TS_INVALID &&
724 ( p_segment->tracks[i]->i_last_dts < i_pcr || i_pcr == VLC_TS_INVALID ))
725 i_pcr = p_segment->tracks[i]->i_last_dts;
727 if( i_pcr > p_sys->i_pcr + 300000 )
729 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
730 p_sys->i_pcr = i_pcr;
733 if( p_sys->i_pts >= p_sys->i_start_pts )
735 if ( p_vsegment->UpdateCurrentToChapter( *p_demux ) )
743 if ( p_vsegment->CurrentEdition() &&
744 p_vsegment->CurrentEdition()->b_ordered &&
745 p_vsegment->CurrentChapter() == NULL )
747 /* nothing left to read in this ordered edition */
752 BlockDecode( p_demux, block, simpleblock, p_sys->i_pts, i_block_duration, b_key_picture || b_discardable_picture );
757 // TODO optimize when there is need to leave or when seeking has been called
758 if( i_block_count > 5 )
765 vlc_mutex_unlock( &p_sys->lock_demuxer );