1 /*****************************************************************************
2 * mp4.c : MP4 file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004, 2010 VLC authors and VideoLAN
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
33 #include <vlc_plugin.h>
35 #include <vlc_demux.h>
36 #include <vlc_charset.h> /* EnsureUTF8 */
37 #include <vlc_input.h>
42 /*****************************************************************************
44 *****************************************************************************/
45 static int Open ( vlc_object_t * );
46 static void Close( vlc_object_t * );
49 set_category( CAT_INPUT )
50 set_subcategory( SUBCAT_INPUT_DEMUX )
51 set_description( N_("MP4 stream demuxer") )
52 set_shortname( N_("MP4") )
53 set_capability( "demux", 240 )
54 set_callbacks( Open, Close )
57 /*****************************************************************************
59 *****************************************************************************/
60 static int Demux ( demux_t * );
61 static int DemuxRef( demux_t *p_demux ){ (void)p_demux; return 0;}
62 static int DemuxFrg( demux_t * );
63 static int DemuxAsLeaf( demux_t * );
64 static int Seek ( demux_t *, mtime_t );
65 static int Control ( demux_t *, int, va_list );
69 MP4_Box_t *p_root; /* container for the whole file */
73 uint64_t i_overall_duration; /* Full duration, including all fragments */
74 uint64_t i_time; /* time position of the presentation
75 * in movie timescale */
76 uint32_t i_timescale; /* movie time scale */
77 uint64_t i_duration; /* movie duration */
78 unsigned int i_tracks; /* number of tracks */
79 mp4_track_t *track; /* array of track */
80 float f_fps; /* number of frame per seconds */
82 bool b_fragmented; /* fMP4 */
86 bool b_smooth; /* Is it Smooth Streaming? */
90 bool b_fragments_probed;
91 mp4_fragment_t moovfragment; /* moov */
92 mp4_fragment_t *p_fragments; /* known fragments (moof following moov) */
96 mp4_fragment_t *p_fragment;
97 uint32_t i_current_box_type;
98 uint32_t i_mdatbytesleft;
102 MP4_Box_t *p_tref_chap;
105 input_title_t *p_title;
108 asf_packet_sys_t asfpacketsys;
109 uint64_t i_preroll; /* foobar */
110 int64_t i_preroll_start;
111 mp4_track_t *p_current_track; /* avoids matching stream_number */
114 /*****************************************************************************
115 * Declaration of local function
116 *****************************************************************************/
117 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *, bool b_force_enable );
118 static int MP4_frg_TrackCreate( demux_t *, mp4_track_t *, MP4_Box_t *);
119 static void MP4_TrackDestroy( mp4_track_t * );
121 static block_t * MP4_Block_Read( demux_t *, const mp4_track_t *, int );
122 static void MP4_Block_Send( demux_t *, mp4_track_t *, block_t * );
124 static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
125 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
127 static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
129 static uint64_t MP4_TrackGetPos ( mp4_track_t * );
130 static uint32_t MP4_TrackGetReadSize( mp4_track_t *, uint32_t * );
131 static int MP4_TrackNextSample( demux_t *, mp4_track_t *, uint32_t );
132 static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
134 static void MP4_UpdateSeekpoint( demux_t * );
136 static MP4_Box_t * MP4_GetTrexByTrackID( MP4_Box_t *p_moov, const uint32_t i_id );
138 static bool AddFragment( demux_t *p_demux, MP4_Box_t *p_moox );
139 static int ProbeFragments( demux_t *p_demux, bool b_force );
140 static int ProbeIndex( demux_t *p_demux );
141 static mp4_fragment_t *GetFragmentByPos( demux_t *p_demux, uint64_t i_pos, bool b_exact );
142 static mp4_fragment_t *GetFragmentByTime( demux_t *p_demux, const mtime_t i_time );
144 static int LeafIndexGetMoofPosByTime( demux_t *p_demux, const mtime_t i_target_time,
145 uint64_t *pi_pos, mtime_t *pi_mooftime );
146 static mtime_t LeafGetTrackFragmentTimeOffset( demux_t *p_demux, mp4_fragment_t *, unsigned int );
147 static int LeafGetTrackAndChunkByMOOVPos( demux_t *p_demux, uint64_t *pi_pos,
148 mp4_track_t **pp_tk, unsigned int *pi_chunk );
149 static int LeafMapTrafTrunContextes( demux_t *p_demux, MP4_Box_t *p_moof );
152 static asf_track_info_t * MP4ASF_GetTrackInfo( asf_packet_sys_t *p_packetsys, uint8_t i_stream_number );
153 static void MP4ASF_Send(asf_packet_sys_t *p_packetsys, uint8_t i_stream_number, block_t **pp_frame);
154 static void MP4ASF_ResetFrames( demux_sys_t *p_sys );
158 static uint32_t stream_ReadU32( stream_t *s, void *p_read, uint32_t i_toread )
160 uint32_t i_return = 0;
161 if ( i_toread > INT32_MAX )
163 i_return = stream_Read( s, p_read, INT32_MAX );
164 if ( i_return < INT32_MAX )
167 i_toread -= INT32_MAX;
169 i_return += stream_Read( s, (uint8_t *)p_read + i_return, (int32_t) i_toread );
173 static bool MP4_stream_Tell( stream_t *s, uint64_t *pi_pos )
175 int64_t i_pos = stream_Tell( s );
180 *pi_pos = (uint64_t) i_pos;
185 static mtime_t GetTrackDurationInFragment( const mp4_fragment_t *p_fragment,
186 unsigned int i_track_ID )
188 for( unsigned int i=0; i<p_fragment->i_durations; i++ )
190 if( i_track_ID == p_fragment->p_durations[i].i_track_ID )
191 return p_fragment->p_durations[i].i_duration;
196 static MP4_Box_t * MP4_GetTrexByTrackID( MP4_Box_t *p_moov, const uint32_t i_id )
198 MP4_Box_t *p_trex = MP4_BoxGet( p_moov, "mvex/trex" );
201 if ( p_trex->i_type == ATOM_trex &&
202 BOXDATA(p_trex) && BOXDATA(p_trex)->i_track_ID == i_id )
205 p_trex = p_trex->p_next;
210 static MP4_Box_t * MP4_GetTrakByTrackID( MP4_Box_t *p_moov, const uint32_t i_id )
212 MP4_Box_t *p_trak = MP4_BoxGet( p_moov, "trak" );
216 if( p_trak->i_type == ATOM_trak &&
217 (p_tkhd = MP4_BoxGet( p_trak, "tkhd" )) && BOXDATA(p_tkhd) &&
218 BOXDATA(p_tkhd)->i_track_ID == i_id )
221 p_trak = p_trak->p_next;
226 /* Return time in microsecond of a track */
227 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
229 demux_sys_t *p_sys = p_demux->p_sys;
231 if( p_sys->b_fragmented )
232 chunk = *p_track->cchunk;
234 chunk = p_track->chunk[p_track->i_chunk];
236 unsigned int i_index = 0;
237 unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
238 int64_t i_dts = chunk.i_first_dts;
240 while( i_sample > 0 )
242 if( i_sample > chunk.p_sample_count_dts[i_index] )
244 i_dts += chunk.p_sample_count_dts[i_index] *
245 chunk.p_sample_delta_dts[i_index];
246 i_sample -= chunk.p_sample_count_dts[i_index];
251 i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
256 /* now handle elst */
257 if( p_track->p_elst )
259 demux_sys_t *p_sys = p_demux->p_sys;
260 MP4_Box_data_elst_t *elst = p_track->BOXDATA(p_elst);
262 /* convert to offset */
263 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
264 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
265 elst->i_media_time[p_track->i_elst] > 0 )
267 i_dts -= elst->i_media_time[p_track->i_elst];
270 /* add i_elst_time */
271 i_dts += p_track->i_elst_time * p_track->i_timescale /
274 if( i_dts < 0 ) i_dts = 0;
277 return CLOCK_FREQ * i_dts / p_track->i_timescale;
280 static inline bool MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track,
283 demux_sys_t *p_sys = p_demux->p_sys;
285 if( p_sys->b_fragmented )
286 ck = p_track->cchunk;
288 ck = &p_track->chunk[p_track->i_chunk];
290 unsigned int i_index = 0;
291 unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
293 if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
296 for( i_index = 0;; i_index++ )
298 if( i_sample < ck->p_sample_count_pts[i_index] )
300 *pi_delta = ck->p_sample_offset_pts[i_index] * CLOCK_FREQ /
301 (int64_t)p_track->i_timescale;
305 i_sample -= ck->p_sample_count_pts[i_index];
310 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
312 return CLOCK_FREQ * p_sys->i_time / p_sys->i_timescale;
315 static void LoadChapter( demux_t *p_demux );
317 static int LoadInitFrag( demux_t *p_demux )
319 demux_sys_t *p_sys = p_demux->p_sys;
321 if( p_sys->b_smooth ) /* Smooth Streaming */
323 if( ( p_sys->p_root = MP4_BoxGetSmooBox( p_demux->s ) ) == NULL )
325 goto LoadInitFragError;
329 MP4_Box_t *p_smoo = MP4_BoxGet( p_sys->p_root, "uuid" );
330 if( !p_smoo || CmpUUID( &p_smoo->i_uuid, &SmooBoxUUID ) )
331 goto LoadInitFragError;
332 /* Get number of tracks */
334 for( int i = 0; i < 3; i++ )
336 MP4_Box_t *p_stra = MP4_BoxGet( p_smoo, "uuid[%d]", i );
337 if( p_stra && BOXDATA(p_stra) && BOXDATA(p_stra)->i_track_ID )
339 /* Get timescale and duration of the video track; */
340 if( p_sys->i_timescale == 0 )
342 if ( p_stra && BOXDATA(p_stra) )
344 p_sys->i_timescale = BOXDATA(p_stra)->i_timescale;
345 p_sys->i_duration = BOXDATA(p_stra)->i_duration;
346 p_sys->i_overall_duration = BOXDATA(p_stra)->i_duration;
348 if( p_sys->i_timescale == 0 )
350 msg_Err( p_demux, "bad timescale" );
351 goto LoadInitFragError;
359 /* Load all boxes ( except raw data ) */
360 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
362 goto LoadInitFragError;
368 msg_Warn( p_demux, "MP4 plugin discarded (not a valid initialization chunk)" );
372 static int InitTracks( demux_t *p_demux )
374 demux_sys_t *p_sys = p_demux->p_sys;
376 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
377 if( p_sys->track == NULL )
380 if( p_sys->b_fragmented )
382 mp4_track_t *p_track;
383 for( uint16_t i = 0; i < p_sys->i_tracks; i++ )
385 p_track = &p_sys->track[i];
386 p_track->cchunk = calloc( 1, sizeof( mp4_chunk_t ) );
387 if( unlikely( !p_track->cchunk ) )
389 free( p_sys->track );
397 static void CreateTracksFromSmooBox( demux_t *p_demux )
399 demux_sys_t *p_sys = p_demux->p_sys;
401 MP4_Box_t *p_smoo = MP4_BoxGet( p_sys->p_root, "uuid" );
402 mp4_track_t *p_track;
404 for( int i = 0; i < 3; i++ )
406 MP4_Box_t *p_stra = MP4_BoxGet( p_smoo, "uuid[%d]", i );
407 if( !p_stra || !BOXDATA(p_stra) || BOXDATA(p_stra)->i_track_ID == 0 )
411 p_track = &p_sys->track[j]; j++;
412 MP4_frg_TrackCreate( p_demux, p_track, p_stra );
413 p_track->p_es = es_out_Add( p_demux->out, &p_track->fmt );
418 static block_t * MP4_EIA608_Convert( block_t * p_block )
420 /* Rebuild codec data from encap */
422 size_t i_remaining = p_block->i_buffer;
423 uint32_t i_bytes = 0;
426 if ( i_remaining < 10 ||
427 !(i_bytes = GetDWBE(p_block->p_buffer)) ||
428 (i_bytes + 8 > i_remaining) ||
429 memcmp("cdat", &p_block->p_buffer[4], 4) ||
430 !(p_newblock = block_Alloc( i_remaining * 3 - 8 )) )
432 p_block->i_buffer = 0;
436 uint8_t *p_write = p_newblock->p_buffer;
437 uint8_t *p_read = &p_block->p_buffer[8];
443 p_write[i_copied++] = 0; /* cc1 == field 0 */
444 p_write[i_copied++] = p_read[0];
445 p_write[i_copied++] = p_read[1];
449 } while( i_bytes >= 2 );
451 if ( i_remaining >= 10 &&
452 (i_bytes = GetDWBE(p_read)) &&
453 (i_bytes + 8 <= i_remaining) &&
454 !memcmp("cdt2", &p_read[4], 4) )
461 p_write[i_copied++] = 0; /* cc1 == field 0 */
462 p_write[i_copied++] = p_read[0];
463 p_write[i_copied++] = p_read[1];
466 } while( i_bytes >= 2 );
469 block_Release( p_block );
470 p_newblock->i_buffer = i_copied;
474 static block_t * MP4_Block_Read( demux_t *p_demux, const mp4_track_t *p_track, int i_size )
476 block_t *p_block = stream_Block( p_demux->s, i_size );
480 /* might have some encap */
481 if( p_track->fmt.i_cat == SPU_ES )
483 switch( p_track->fmt.i_codec )
489 case VLC_CODEC_EIA608_1:
490 p_block = MP4_EIA608_Convert( p_block );
493 p_block->i_buffer = 0;
501 static void MP4_Block_Send( demux_t *p_demux, mp4_track_t *p_track, block_t *p_block )
503 if ( p_track->b_chans_reorder && aout_BitsPerSample( p_track->fmt.i_codec ) )
505 aout_ChannelReorder( p_block->p_buffer, p_block->i_buffer,
506 p_track->fmt.audio.i_channels,
507 p_track->rgi_chans_reordering,
508 p_track->fmt.i_codec );
511 /* ASF packets in mov */
514 /* Fake a new stream from MP4 block */
515 stream_t *p_stream = p_demux->s;
516 p_demux->s = stream_MemoryNew( p_demux, p_block->p_buffer, p_block->i_buffer, true );
519 p_track->i_dts_backup = p_block->i_dts;
520 p_track->i_pts_backup = p_block->i_pts;
521 /* And demux it as ASF packet */
522 DemuxASFPacket( &p_demux->p_sys->asfpacketsys, p_block->i_buffer, p_block->i_buffer );
523 stream_Delete(p_demux->s);
525 block_Release(p_block);
526 p_demux->s = p_stream;
529 es_out_Send( p_demux->out, p_track->p_es, p_block );
532 /*****************************************************************************
533 * Open: check file and initializes MP4 structures
534 *****************************************************************************/
535 static int Open( vlc_object_t * p_this )
537 demux_t *p_demux = (demux_t *)p_this;
540 const uint8_t *p_peek;
550 /* A little test to see if it could be a mp4 */
551 if( stream_Peek( p_demux->s, &p_peek, 11 ) < 11 ) return VLC_EGENERIC;
553 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
564 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
567 /* We don't yet support f4v, but avformat does. */
568 if( p_peek[8] == 'f' && p_peek[9] == '4' && p_peek[10] == 'v' )
575 /* create our structure that will contains all data */
576 p_sys = calloc( 1, sizeof( demux_sys_t ) );
581 stream_Control( p_demux->s, STREAM_CAN_SEEK, &p_sys->b_seekable );
582 if( !p_sys->b_seekable )
584 msg_Warn( p_demux, "MP4 plugin discarded (not seekable)" );
588 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_fastseekable );
589 p_sys->b_seekmode = p_sys->b_fastseekable;
591 /*Set exported functions */
592 p_demux->pf_demux = Demux;
593 p_demux->pf_control = Control;
595 p_demux->p_sys = p_sys;
597 if( stream_Peek( p_demux->s, &p_peek, 24 ) < 24 ) return VLC_EGENERIC;
598 if( !CmpUUID( (UUID_t *)(p_peek + 8), &SmooBoxUUID ) )
600 p_sys->b_smooth = true;
601 p_sys->b_fragmented = true;
604 if( LoadInitFrag( p_demux ) != VLC_SUCCESS )
607 if( MP4_BoxCount( p_sys->p_root, "/moov/mvex" ) > 0 )
609 if ( p_sys->b_seekable )
611 /* Probe remaining to check if there's really fragments
612 or if that file is just ready to append fragments */
613 ProbeFragments( p_demux, false );
614 p_sys->b_fragmented = !!MP4_BoxCount( p_sys->p_root, "/moof" );
616 if ( p_sys->b_fragmented && !p_sys->i_overall_duration )
617 ProbeFragments( p_demux, true );
620 p_sys->b_fragmented = true;
623 if ( !p_sys->moovfragment.p_moox )
624 AddFragment( p_demux, MP4_BoxGet( p_sys->p_root, "/moov" ) );
626 /* we always need a moov entry, but smooth has a workaround */
627 if ( !p_sys->moovfragment.p_moox && !p_sys->b_smooth )
630 if( p_sys->b_smooth )
632 if( InitTracks( p_demux ) != VLC_SUCCESS )
634 CreateTracksFromSmooBox( p_demux );
638 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
640 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
642 switch( BOXDATA(p_ftyp)->i_major_brand )
646 "ISO Media file (isom) version %d.",
647 BOXDATA(p_ftyp)->i_minor_version );
653 msg_Dbg( p_demux, "3GPP Media file Release: %c",
654 #ifdef WORDS_BIGENDIAN
655 BOXDATA(p_ftyp)->i_major_brand
657 BOXDATA(p_ftyp)->i_major_brand >> 24
662 msg_Dbg( p_demux, "Apple QuickTime file" );
665 msg_Dbg( p_demux, "PIFF (= isml = fMP4) file" );
668 msg_Dbg( p_demux, "DASH Stream file" );
669 p_sys->b_dash = true;
673 "unrecognized major file specification (%4.4s).",
674 (char*)&BOXDATA(p_ftyp)->i_major_brand );
677 /* also lookup in compatibility list */
678 for(uint32_t i=0; i<BOXDATA(p_ftyp)->i_compatible_brands_count; i++)
680 if (BOXDATA(p_ftyp)->i_compatible_brands[i] == MAJOR_dash)
682 msg_Dbg( p_demux, "DASH Stream file" );
683 p_sys->b_dash = true;
689 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
692 if ( p_sys->b_smooth || p_sys->b_dash )
694 p_demux->pf_demux = DemuxFrg;
696 else if( p_sys->b_fragmented )
698 p_demux->pf_demux = DemuxAsLeaf;
701 /* the file need to have one moov box */
702 p_sys->moovfragment.p_moox = MP4_BoxGet( p_sys->p_root, "/moov", 0 );
703 if( !p_sys->moovfragment.p_moox )
705 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
709 msg_Err( p_demux, "MP4 plugin discarded (no moov,foov,moof box)" );
712 /* we have a free box as a moov, rename it */
713 p_foov->i_type = ATOM_moov;
714 p_sys->moovfragment.p_moox = p_foov;
717 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
719 int i_count = MP4_BoxCount( p_rmra, "rmda" );
722 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
724 input_thread_t *p_input = demux_GetParentInput( p_demux );
725 input_item_t *p_current = input_GetItem( p_input );
727 input_item_node_t *p_subitems = input_item_node_Create( p_current );
729 for( i = 0; i < i_count; i++ )
731 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
735 if( !p_rdrf || !BOXDATA(p_rdrf) || !( psz_ref = strdup( BOXDATA(p_rdrf)->psz_ref ) ) )
739 i_ref_type = BOXDATA(p_rdrf)->i_ref_type;
741 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
742 psz_ref, (char*)&i_ref_type );
744 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
746 if( strstr( psz_ref, "qt5gateQT" ) )
748 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
751 if( !strncmp( psz_ref, "http://", 7 ) ||
752 !strncmp( psz_ref, "rtsp://", 7 ) )
759 char *psz_path = strdup( p_demux->psz_location );
760 char *end = strrchr( psz_path, '/' );
761 if( end ) end[1] = '\0';
762 else *psz_path = '\0';
764 if( asprintf( &psz_absolute, "%s://%s%s",
765 p_demux->psz_access, psz_path, psz_ref ) < 0 )
769 input_item_node_Delete( p_subitems );
770 vlc_object_release( p_input) ;
775 psz_ref = psz_absolute;
778 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
779 input_item_t *p_item = input_item_New( psz_ref, NULL );
780 input_item_CopyOptions( p_current, p_item );
781 input_item_node_AppendItem( p_subitems, p_item );
782 vlc_gc_decref( p_item );
786 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
787 (char*)&BOXDATA(p_rdrf)->i_ref_type );
791 input_item_node_PostAndDelete( p_subitems );
792 vlc_object_release( p_input );
795 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
799 msg_Err( p_demux, "cannot find /moov/mvhd" );
804 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
805 p_demux->pf_demux = DemuxRef;
811 p_sys->i_timescale = BOXDATA(p_mvhd)->i_timescale;
812 if( p_sys->i_timescale == 0 )
814 msg_Err( p_this, "bad timescale" );
819 if ( p_sys->i_overall_duration == 0 )
821 /* Try in mehd if fragmented */
822 MP4_Box_t *p_mehd = MP4_BoxGet( p_demux->p_sys->p_root, "moov/mvex/mehd");
823 if ( p_mehd && p_mehd->data.p_mehd )
824 p_sys->i_overall_duration = p_mehd->data.p_mehd->i_fragment_duration;
827 for( i = 0; i < p_sys->i_tracks; i++ )
829 mtime_t i_duration = GetTrackDurationInFragment( &p_sys->moovfragment,
830 p_sys->track[i].i_track_ID );
831 p_sys->i_overall_duration = __MAX( p_sys->i_overall_duration, (uint64_t)i_duration );
836 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
838 msg_Err( p_demux, "cannot find any /moov/trak" );
841 msg_Dbg( p_demux, "found %d track%c",
843 p_sys->i_tracks ? 's':' ' );
845 if( InitTracks( p_demux ) != VLC_SUCCESS )
848 /* Search the first chap reference (like quicktime) and
849 * check that at least 1 stream is enabled */
850 p_sys->p_tref_chap = NULL;
851 b_enabled_es = false;
852 for( i = 0; i < p_sys->i_tracks; i++ )
854 MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
857 MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
858 if( p_tkhd && BOXDATA(p_tkhd) && (BOXDATA(p_tkhd)->i_flags&MP4_TRACK_ENABLED) )
861 MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
862 if( p_chap && p_chap->data.p_tref_generic &&
863 p_chap->data.p_tref_generic->i_entry_count > 0 && !p_sys->p_tref_chap )
864 p_sys->p_tref_chap = p_chap;
867 /* now process each track and extract all useful information */
868 for( i = 0; i < p_sys->i_tracks; i++ )
870 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
871 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
873 if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
876 switch( p_sys->track[i].fmt.i_cat )
885 psz_cat = "subtitle";
893 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
894 p_sys->track[i].i_track_ID, psz_cat,
895 p_sys->track[i].b_enable ? "enable":"disable",
896 p_sys->track[i].fmt.psz_language ?
897 p_sys->track[i].fmt.psz_language : "undef" );
899 else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
901 msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
902 p_sys->track[i].i_track_ID,
903 p_sys->track[i].fmt.psz_language ?
904 p_sys->track[i].fmt.psz_language : "undef" );
908 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
909 p_sys->track[i].i_track_ID );
914 mtime_t i_total_duration = 0;
915 mp4_fragment_t *p_fragment = &p_sys->moovfragment;
916 while ( p_fragment && p_sys->i_tracks )
918 if ( (p_fragment != &p_sys->moovfragment || p_fragment->i_chunk_range_max_offset) &&
919 p_fragment->i_durations && p_fragment->p_durations[0].i_track_ID == p_sys->track[0].i_track_ID )
920 i_total_duration += CLOCK_FREQ * p_fragment->p_durations[0].i_duration / p_sys->i_timescale;
921 msg_Dbg( p_demux, "fragment offset %"PRId64", data %"PRIu64"<->%"PRIu64", "
922 "duration %"PRId64" @%"PRId64,
923 p_fragment->p_moox->i_pos, p_fragment->i_chunk_range_min_offset,
924 p_fragment->i_chunk_range_max_offset,
925 ( p_fragment->i_durations && p_fragment->p_durations[0].i_track_ID == p_sys->track[0].i_track_ID )?
926 CLOCK_FREQ * p_fragment->p_durations[0].i_duration / p_sys->i_timescale : 0, i_total_duration );
927 p_fragment = p_fragment->p_next;
932 LoadChapter( p_demux );
934 p_sys->asfpacketsys.p_demux = p_demux;
935 p_sys->asfpacketsys.pi_preroll = &p_sys->i_preroll;
936 p_sys->asfpacketsys.pi_preroll_start = &p_sys->i_preroll_start;
937 p_sys->asfpacketsys.pf_doskip = NULL;
938 p_sys->asfpacketsys.pf_send = MP4ASF_Send;
939 p_sys->asfpacketsys.pf_gettrackinfo = MP4ASF_GetTrackInfo;
940 p_sys->asfpacketsys.pf_updatetime = NULL;
941 p_sys->asfpacketsys.pf_setaspectratio = NULL;
948 MP4_BoxFree( p_demux->s, p_sys->p_root );
954 /*****************************************************************************
955 * Demux: read packet and send them to decoders
956 *****************************************************************************
957 * TODO check for newly selected track (ie audio upt to now )
958 *****************************************************************************/
959 static int Demux( demux_t *p_demux )
961 demux_sys_t *p_sys = p_demux->p_sys;
962 unsigned int i_track;
965 unsigned int i_track_selected;
967 /* check for newly selected/unselected track */
968 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
971 mp4_track_t *tk = &p_sys->track[i_track];
974 if( !tk->b_ok || tk->b_chapter ||
975 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
980 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
982 if( tk->b_selected && !b )
984 MP4_TrackUnselect( p_demux, tk );
986 else if( !tk->b_selected && b)
988 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
997 if( i_track_selected <= 0 )
999 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
1000 if( p_sys->i_timescale > 0 )
1002 int64_t i_length = CLOCK_FREQ *
1003 (mtime_t)p_sys->i_overall_duration /
1004 (mtime_t)p_sys->i_timescale;
1005 if( MP4_GetMoviePTS( p_sys ) >= i_length )
1010 msg_Warn( p_demux, "no track selected, exiting..." );
1015 MP4_UpdateSeekpoint( p_demux );
1017 /* first wait for the good time to read a packet */
1018 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
1020 bool b_data_sent = false;
1022 /* Find next track matching contiguous data */
1023 mp4_track_t *tk = NULL;
1024 uint64_t i_candidate_pos = UINT64_MAX;
1025 mtime_t i_candidate_dts = INT64_MAX;
1026 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1028 mp4_track_t *tk_tmp = &p_sys->track[i_track];
1029 if( !tk_tmp->b_ok || tk_tmp->b_chapter || !tk_tmp->b_selected || tk_tmp->i_sample >= tk_tmp->i_sample_count )
1032 if ( p_sys->b_seekmode )
1034 mtime_t i_dts = MP4_TrackGetDTS( p_demux, tk_tmp );
1035 if ( i_dts <= i_candidate_dts )
1038 i_candidate_dts = i_dts;
1039 i_candidate_pos = MP4_TrackGetPos( tk_tmp );
1044 /* Try to avoid seeking on non fastseekable. Will fail with non interleaved content */
1045 uint64_t i_pos = MP4_TrackGetPos( tk_tmp );
1046 if ( i_pos <= i_candidate_pos )
1048 i_candidate_pos = i_pos;
1056 msg_Dbg( p_demux, "Could not select track by data position" );
1059 else if ( p_sys->b_seekmode )
1061 if( stream_Seek( p_demux->s, i_candidate_pos ) )
1063 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
1065 MP4_TrackUnselect( p_demux, tk );
1071 msg_Dbg( p_demux, "tk(%i)=%"PRId64" mv=%"PRId64" pos=%"PRIu64, i_track,
1072 MP4_TrackGetDTS( p_demux, tk ),
1073 MP4_GetMoviePTS( p_sys ), i_candidate_pos );
1076 uint32_t i_nb_samples = 0;
1077 uint32_t i_samplessize = MP4_TrackGetReadSize( tk, &i_nb_samples );
1078 if( i_samplessize > 0 )
1082 uint64_t i_current_pos;
1085 if ( !MP4_stream_Tell( p_demux->s, &i_current_pos ) )
1088 if( i_current_pos != i_candidate_pos )
1090 if( stream_Seek( p_demux->s, i_candidate_pos ) )
1092 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)"
1093 ": Failed to seek to %"PRIu64,
1094 tk->i_track_ID, i_candidate_pos );
1095 MP4_TrackUnselect( p_demux, tk );
1098 i_current_pos = i_candidate_pos;
1102 if( !(p_block = MP4_Block_Read( p_demux, tk, i_samplessize )) )
1104 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)"
1105 ": Failed to read %d bytes sample at %"PRIu64,
1106 tk->i_track_ID, i_samplessize, i_current_pos );
1107 MP4_TrackUnselect( p_demux, tk );
1112 p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
1114 if( MP4_TrackGetPTSDelta( p_demux, tk, &i_delta ) )
1115 p_block->i_pts = p_block->i_dts + i_delta;
1116 else if( tk->fmt.i_cat != VIDEO_ES )
1117 p_block->i_pts = p_block->i_dts;
1119 p_block->i_pts = VLC_TS_INVALID;
1123 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
1126 MP4_Block_Send( p_demux, tk, p_block );
1130 if ( i_nb_samples ) /* sample size could be 0, need to go fwd. see return */
1131 MP4_TrackNextSample( p_demux, tk, i_nb_samples );
1136 p_sys->i_pcr = INT64_MAX;
1137 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1139 mp4_track_t *tk = &p_sys->track[i_track];
1140 if ( !tk->b_ok || !tk->b_selected ||
1141 (tk->fmt.i_cat != AUDIO_ES && tk->fmt.i_cat != VIDEO_ES) )
1144 mtime_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1145 p_sys->i_pcr = __MIN( i_dts, p_sys->i_pcr );
1147 if ( !p_sys->b_seekmode && i_dts > p_sys->i_pcr + 2*CLOCK_FREQ )
1149 msg_Dbg( p_demux, "that media doesn't look interleaved, will need to seek");
1150 p_sys->b_seekmode = true;
1153 p_sys->i_time = p_sys->i_pcr * p_sys->i_timescale / CLOCK_FREQ;
1157 return b_data_sent || ( i_samplessize == 0 && i_nb_samples );
1160 static void MP4_UpdateSeekpoint( demux_t *p_demux )
1162 demux_sys_t *p_sys = p_demux->p_sys;
1165 if( !p_sys->p_title )
1167 i_time = MP4_GetMoviePTS( p_sys );
1168 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
1170 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
1175 if( i != p_demux->info.i_seekpoint && i >= 0 )
1177 p_demux->info.i_seekpoint = i;
1178 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1181 /*****************************************************************************
1182 * Seek: Go to i_date
1183 ******************************************************************************/
1184 static int Seek( demux_t *p_demux, mtime_t i_date )
1186 demux_sys_t *p_sys = p_demux->p_sys;
1187 unsigned int i_track;
1189 /* First update global time */
1190 p_sys->i_time = i_date * p_sys->i_timescale / CLOCK_FREQ;
1191 p_sys->i_pcr = VLC_TS_INVALID;
1193 /* Now for each stream try to go to this time */
1194 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1196 mp4_track_t *tk = &p_sys->track[i_track];
1197 MP4_TrackSeek( p_demux, tk, i_date );
1199 MP4_UpdateSeekpoint( p_demux );
1201 MP4ASF_ResetFrames( p_sys );
1202 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
1207 static int LeafSeekIntoFragment( demux_t *p_demux, mp4_fragment_t *p_fragment )
1209 demux_sys_t *p_sys = p_demux->p_sys;
1210 uint64_t i64 = p_fragment->i_chunk_range_min_offset;
1212 if ( p_fragment->p_moox->i_type == ATOM_moov )
1214 mp4_track_t *p_track;
1215 unsigned int i_chunk;
1216 int i_ret = LeafGetTrackAndChunkByMOOVPos( p_demux, &i64, &p_track, &i_chunk );
1217 if ( i_ret == VLC_EGENERIC )
1219 msg_Dbg( p_demux, "moov seek failed to identify %"PRIu64, i64 );
1222 msg_Dbg( p_demux, "moov seeking to %"PRIu64, i64 );
1226 i64 = p_fragment->i_chunk_range_min_offset;
1227 msg_Dbg( p_demux, "moof seeking to %"PRIu64, i64 );
1230 if( stream_Seek( p_demux->s, i64 ) )
1232 msg_Err( p_demux, "seek failed to %"PRIu64, i64 );
1233 return VLC_EGENERIC;
1237 p_sys->context.p_fragment = p_fragment;
1238 p_sys->context.i_current_box_type = ATOM_mdat;
1239 LeafMapTrafTrunContextes( p_demux, p_fragment->p_moox );
1240 p_sys->context.i_mdatbytesleft = p_fragment->i_chunk_range_max_offset - i64;
1242 mtime_t i_time_base = 0;
1243 for( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1245 mtime_t i_tracktime = LeafGetTrackFragmentTimeOffset( p_demux, p_fragment,
1246 p_sys->track[i_track].i_track_ID );
1247 p_sys->track[i_track].i_time = i_tracktime * p_sys->track[i_track].i_timescale / p_sys->i_timescale;
1248 i_time_base = __MIN( i_time_base, i_tracktime );
1250 p_sys->i_time = i_time_base;
1251 p_sys->i_pcr = VLC_TS_INVALID;
1256 static int LeafSeekToTime( demux_t *p_demux, mtime_t i_nztime )
1258 demux_sys_t *p_sys = p_demux->p_sys;
1259 mp4_fragment_t *p_fragment;
1261 if ( !p_sys->i_timescale || !p_sys->i_overall_duration || !p_sys->b_seekable )
1262 return VLC_EGENERIC;
1264 if ( !p_sys->b_fragments_probed && !p_sys->b_index_probed && p_sys->b_seekable )
1266 ProbeIndex( p_demux );
1267 p_sys->b_index_probed = true;
1270 p_fragment = GetFragmentByTime( p_demux, i_nztime );
1274 msg_Dbg( p_demux, "seek can't find matching fragment for %"PRId64", trying index", i_nztime );
1275 if ( LeafIndexGetMoofPosByTime( p_demux, i_nztime, &i64, &i_mooftime ) == VLC_SUCCESS )
1277 msg_Dbg( p_demux, "seek trying to go to unknown but indexed fragment at %"PRId64, i64 );
1278 if( stream_Seek( p_demux->s, i64 ) )
1280 msg_Err( p_demux, "seek to moof failed %"PRId64, i64 );
1281 return VLC_EGENERIC;
1283 p_sys->context.i_current_box_type = 0;
1284 p_sys->context.i_mdatbytesleft = 0;
1285 p_sys->context.p_fragment = NULL;
1286 for( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1288 p_sys->track[i_track].i_time = i_mooftime / CLOCK_FREQ * p_sys->track[i_track].i_timescale;
1290 p_sys->i_time = i_mooftime / CLOCK_FREQ * p_sys->i_timescale;
1291 p_sys->i_pcr = VLC_TS_INVALID;
1295 msg_Warn( p_demux, "seek by index failed" );
1296 return VLC_EGENERIC;
1301 msg_Dbg( p_demux, "seeking to fragment data starting at %"PRIu64" for time %"PRId64,
1302 p_fragment->i_chunk_range_min_offset, i_nztime );
1303 if ( LeafSeekIntoFragment( p_demux, p_fragment ) != VLC_SUCCESS )
1304 return VLC_EGENERIC;
1307 MP4ASF_ResetFrames( p_sys );
1308 /* And set next display time in that trun/fragment */
1309 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, VLC_TS_0 + i_nztime );
1313 static int LeafSeekToPos( demux_t *p_demux, double f )
1315 demux_sys_t *p_sys = p_demux->p_sys;
1316 if ( !p_sys->b_seekable )
1317 return VLC_EGENERIC;
1319 if ( p_sys->i_timescale && p_sys->i_overall_duration )
1321 return LeafSeekToTime( p_demux,
1322 (mtime_t)( f * CLOCK_FREQ * p_sys->i_overall_duration /
1323 p_sys->i_timescale ) );
1326 if ( !p_sys->b_fragments_probed && !p_sys->b_index_probed && p_sys->b_seekable )
1328 ProbeIndex( p_demux );
1329 p_sys->b_index_probed = true;
1332 /* Blind seek to pos only */
1333 uint64_t i64 = (uint64_t) stream_Size( p_demux->s ) * f;
1334 mp4_fragment_t *p_fragment = GetFragmentByPos( p_demux, i64, false );
1337 msg_Dbg( p_demux, "Seeking to fragment data starting at %"PRIu64" for pos %"PRIu64,
1338 p_fragment->i_chunk_range_min_offset, i64 );
1339 return LeafSeekIntoFragment( p_demux, p_fragment );
1343 msg_Dbg( p_demux, "Cant get fragment for data starting at %"PRIu64, i64 );
1344 return VLC_EGENERIC;
1348 static int MP4_frg_Seek( demux_t *p_demux, double f )
1350 demux_sys_t *p_sys = p_demux->p_sys;
1352 int64_t i64 = stream_Size( p_demux->s );
1353 if( stream_Seek( p_demux->s, (int64_t)(i64 * f) ) )
1355 return VLC_EGENERIC;
1359 /* update global time */
1360 p_sys->i_time = (uint64_t)(f * (double)p_sys->i_overall_duration);
1361 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
1363 for( unsigned i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1365 mp4_track_t *tk = &p_sys->track[i_track];
1367 /* We don't want the current chunk to be flushed */
1368 tk->cchunk->i_sample = tk->cchunk->i_sample_count;
1370 /* reset/update some values */
1371 tk->i_sample = tk->i_sample_first = 0;
1372 tk->i_first_dts = p_sys->i_time;
1374 /* We want to discard the current chunk and get the next one at once */
1375 tk->b_has_non_empty_cchunk = false;
1377 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, p_sys->i_pcr );
1382 static bool imageTypeCompatible( const MP4_Box_data_data_t *p_data )
1385 p_data->e_wellknowntype == DATA_WKT_PNG ||
1386 p_data->e_wellknowntype == DATA_WKT_JPEG ||
1387 p_data->e_wellknowntype == DATA_WKT_BMP );
1390 /*****************************************************************************
1392 *****************************************************************************/
1393 static int Control( demux_t *p_demux, int i_query, va_list args )
1395 demux_sys_t *p_sys = p_demux->p_sys;
1400 const char *psz_roots[] = { "/moov/udta/meta/ilst",
1407 const uint32_t rgi_pict_atoms[2] = { ATOM_PICT, ATOM_pict };
1411 case DEMUX_GET_POSITION:
1412 pf = (double*)va_arg( args, double * );
1413 if( p_sys->i_overall_duration > 0 )
1415 *pf = (double)p_sys->i_time / (double)p_sys->i_overall_duration;
1423 case DEMUX_SET_POSITION:
1424 f = (double)va_arg( args, double );
1425 if ( p_demux->pf_demux == DemuxAsLeaf )
1426 return LeafSeekToPos( p_demux, f );
1427 else if ( p_demux->pf_demux == DemuxFrg )
1428 return MP4_frg_Seek( p_demux, f );
1429 else if( p_sys->i_timescale > 0 )
1431 i64 = (int64_t)( f * CLOCK_FREQ *
1432 (double)p_sys->i_overall_duration /
1433 (double)p_sys->i_timescale );
1434 return Seek( p_demux, i64 );
1436 else return VLC_EGENERIC;
1438 case DEMUX_GET_TIME:
1439 pi64 = (int64_t*)va_arg( args, int64_t * );
1440 if( p_sys->i_timescale > 0 )
1442 *pi64 = CLOCK_FREQ *
1443 (mtime_t)p_sys->i_time /
1444 (mtime_t)p_sys->i_timescale;
1449 case DEMUX_SET_TIME:
1450 i64 = (int64_t)va_arg( args, int64_t );
1451 if ( p_demux->pf_demux == DemuxAsLeaf )
1452 return LeafSeekToTime( p_demux, i64 );
1454 return Seek( p_demux, i64 );
1456 case DEMUX_GET_LENGTH:
1457 pi64 = (int64_t*)va_arg( args, int64_t * );
1458 if( p_sys->i_timescale > 0 )
1460 *pi64 = CLOCK_FREQ *
1461 (mtime_t)p_sys->i_overall_duration /
1462 (mtime_t)p_sys->i_timescale;
1468 pf = (double*)va_arg( args, double* );
1472 case DEMUX_GET_ATTACHMENTS:
1474 input_attachment_t ***ppp_attach = va_arg( args, input_attachment_t*** );
1475 int *pi_int = va_arg( args, int * );
1477 MP4_Box_t *p_udta = NULL;
1481 /* Count number of total attachments */
1482 for( ; psz_roots[i_index] && !p_udta; i_index++ )
1484 p_udta = MP4_BoxGet( p_sys->p_root, psz_roots[i_index] );
1486 i_count += MP4_BoxCount( p_udta, "covr/data" );
1489 for ( size_t i=0; i< ARRAY_SIZE(rgi_pict_atoms); i++ )
1492 snprintf( rgsz_path, 5, "%4.4s", (char*)&rgi_pict_atoms[i] );
1493 i_count += MP4_BoxCount( p_sys->p_root, rgsz_path );
1497 return VLC_EGENERIC;
1499 *ppp_attach = (input_attachment_t**)
1500 malloc( sizeof(input_attachment_t*) * i_count );
1501 if( !(*ppp_attach) ) return VLC_ENOMEM;
1503 /* First add cover attachments */
1505 size_t i_box_count = 0;
1508 const MP4_Box_t *p_data = MP4_BoxGet( p_udta, "covr/data" );
1509 for( ; p_data; p_data = p_data->p_next )
1515 if ( p_data->i_type != ATOM_data || !imageTypeCompatible( BOXDATA(p_data) ) )
1518 switch( BOXDATA(p_data)->e_wellknowntype )
1521 psz_mime = strdup( "image/png" );
1524 psz_mime = strdup( "image/jpeg" );
1527 psz_mime = strdup( "image/bmp" );
1533 if ( asprintf( &psz_filename, "%s/covr/data[%"PRIu64"]", psz_roots[i_index - 1],
1534 i_box_count - 1 ) >= 0 )
1536 (*ppp_attach)[i_count++] =
1537 vlc_input_attachment_New( psz_filename, psz_mime, "Cover picture",
1538 BOXDATA(p_data)->p_blob, BOXDATA(p_data)->i_blob );
1539 msg_Dbg( p_demux, "adding attachment %s", psz_filename );
1540 free( psz_filename );
1547 /* Then quickdraw pict ones */
1548 for ( size_t i=0; i< ARRAY_SIZE(rgi_pict_atoms); i++ )
1551 snprintf( rgsz_path, 5, "%4.4s", (char*)&rgi_pict_atoms[i] );
1552 const MP4_Box_t *p_pict = MP4_BoxGet( p_sys->p_root, rgsz_path );
1554 for( ; p_pict; p_pict = p_pict->p_next )
1556 if ( i_box_count++ == UINT16_MAX ) /* pnot only handles 2^16 */
1558 if ( p_pict->i_type != rgi_pict_atoms[i] )
1560 char rgsz_location[12];
1561 snprintf( rgsz_location, 12, "%4.4s[%"PRIu16"]", (char*)&rgi_pict_atoms[i],
1562 (uint16_t) i_box_count - 1 );
1563 (*ppp_attach)[i_count++] = vlc_input_attachment_New( rgsz_location, "image/x-pict",
1564 "Quickdraw image", p_pict->data.p_binary->p_blob, p_pict->data.p_binary->i_blob );
1565 msg_Dbg( p_demux, "adding attachment %s", rgsz_location );
1571 free( *ppp_attach );
1572 return VLC_EGENERIC;
1580 case DEMUX_GET_META:
1582 vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
1584 MP4_Box_t *p_data = NULL;
1585 MP4_Box_t *p_udta = NULL;
1586 bool b_attachment_set = false;
1588 for( int i_index = 0; psz_roots[i_index] && !p_udta; i_index++ )
1590 p_udta = MP4_BoxGet( p_sys->p_root, psz_roots[i_index] );
1593 p_data = MP4_BoxGet( p_udta, "covr/data" );
1594 if ( p_data && imageTypeCompatible( BOXDATA(p_data) ) )
1596 char *psz_attachment;
1597 if ( -1 != asprintf( &psz_attachment, "attachment://%s/covr/data[0]",
1598 psz_roots[i_index] ) )
1600 vlc_meta_SetArtURL( p_meta, psz_attachment );
1601 b_attachment_set = true;
1602 free( psz_attachment );
1608 const MP4_Box_t *p_pnot;
1609 if ( !b_attachment_set && (p_pnot = MP4_BoxGet( p_sys->p_root, "pnot" )) )
1611 for ( size_t i=0; i< ARRAY_SIZE(rgi_pict_atoms) && !b_attachment_set; i++ )
1613 if ( rgi_pict_atoms[i] == BOXDATA(p_pnot)->i_type )
1616 snprintf( rgsz_path, 26, "attachment://%4.4s[%"PRIu16"]",
1617 (char*)&rgi_pict_atoms[i], BOXDATA(p_pnot)->i_index - 1 );
1618 vlc_meta_SetArtURL( p_meta, rgsz_path );
1619 b_attachment_set = true;
1624 if( p_udta == NULL && !b_attachment_set )
1625 return VLC_EGENERIC;
1627 SetupMeta( p_meta, p_udta );
1632 case DEMUX_GET_TITLE_INFO:
1634 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
1635 int *pi_int = (int*)va_arg( args, int* );
1636 int *pi_title_offset = (int*)va_arg( args, int* );
1637 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
1639 if( !p_sys->p_title )
1640 return VLC_EGENERIC;
1643 *ppp_title = malloc( sizeof( input_title_t*) );
1644 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
1645 *pi_title_offset = 0;
1646 *pi_seekpoint_offset = 0;
1649 case DEMUX_SET_TITLE:
1651 const int i_title = (int)va_arg( args, int );
1652 if( !p_sys->p_title || i_title != 0 )
1653 return VLC_EGENERIC;
1656 case DEMUX_SET_SEEKPOINT:
1658 const int i_seekpoint = (int)va_arg( args, int );
1659 if( !p_sys->p_title )
1660 return VLC_EGENERIC;
1661 return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
1663 case DEMUX_GET_PTS_DELAY:
1665 for( unsigned int i = 0; i < p_sys->i_tracks; i++ )
1667 const MP4_Box_t *p_load;
1668 if ( (p_load = MP4_BoxGet( p_sys->track[i].p_track, "load" )) &&
1669 BOXDATA(p_load)->i_duration > 0 )
1671 *va_arg(args, int64_t *) = BOXDATA(p_load)->i_duration *
1672 CLOCK_FREQ / p_sys->track[i].i_timescale;
1676 return VLC_EGENERIC;
1678 case DEMUX_SET_NEXT_DEMUX_TIME:
1679 case DEMUX_SET_GROUP:
1680 case DEMUX_HAS_UNSUPPORTED_META:
1681 case DEMUX_CAN_RECORD:
1682 return VLC_EGENERIC;
1685 msg_Warn( p_demux, "control query %u unimplemented", i_query );
1686 return VLC_EGENERIC;
1690 /*****************************************************************************
1691 * Close: frees unused data
1692 *****************************************************************************/
1693 static void Close ( vlc_object_t * p_this )
1695 demux_t * p_demux = (demux_t *)p_this;
1696 demux_sys_t *p_sys = p_demux->p_sys;
1697 unsigned int i_track;
1699 msg_Dbg( p_demux, "freeing all memory" );
1701 MP4_BoxFree( p_demux->s, p_sys->p_root );
1702 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1704 MP4_TrackDestroy( &p_sys->track[i_track] );
1706 FREENULL( p_sys->track );
1708 if( p_sys->p_title )
1709 vlc_input_title_Delete( p_sys->p_title );
1711 while( p_sys->moovfragment.p_next )
1713 mp4_fragment_t *p_fragment = p_sys->moovfragment.p_next->p_next;
1714 free( p_sys->moovfragment.p_next->p_durations );
1715 free( p_sys->moovfragment.p_next );
1716 p_sys->moovfragment.p_next = p_fragment;
1718 free( p_sys->moovfragment.p_durations );
1725 /****************************************************************************
1726 * Local functions, specific to vlc
1727 ****************************************************************************/
1729 static void LoadChapterGpac( demux_t *p_demux, MP4_Box_t *p_chpl )
1731 demux_sys_t *p_sys = p_demux->p_sys;
1734 p_sys->p_title = vlc_input_title_New();
1735 for( i = 0; i < BOXDATA(p_chpl)->i_chapter; i++ )
1737 seekpoint_t *s = vlc_seekpoint_New();
1739 s->psz_name = strdup( BOXDATA(p_chpl)->chapter[i].psz_name );
1740 EnsureUTF8( s->psz_name );
1741 s->i_time_offset = BOXDATA(p_chpl)->chapter[i].i_start / 10;
1742 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1745 static void LoadChapterApple( demux_t *p_demux, mp4_track_t *tk )
1747 demux_sys_t *p_sys = p_demux->p_sys;
1749 for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1751 const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1752 int64_t i_pts_delta;
1753 if ( !MP4_TrackGetPTSDelta( p_demux, tk, &i_pts_delta ) )
1755 uint32_t i_nb_samples = 0;
1756 const uint32_t i_size = MP4_TrackGetReadSize( tk, &i_nb_samples );
1758 if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1761 const uint32_t i_read = stream_ReadU32( p_demux->s, p_buffer,
1762 __MIN( sizeof(p_buffer), i_size ) );
1763 const uint32_t i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1767 seekpoint_t *s = vlc_seekpoint_New();
1769 s->psz_name = strndup( &p_buffer[2], i_len );
1770 EnsureUTF8( s->psz_name );
1772 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1774 if( !p_sys->p_title )
1775 p_sys->p_title = vlc_input_title_New();
1776 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1779 if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1780 tk->chunk[tk->i_chunk].i_sample_count )
1784 static void LoadChapter( demux_t *p_demux )
1786 demux_sys_t *p_sys = p_demux->p_sys;
1789 if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) &&
1790 BOXDATA(p_chpl) && BOXDATA(p_chpl)->i_chapter > 0 )
1792 LoadChapterGpac( p_demux, p_chpl );
1794 else if( p_sys->p_tref_chap )
1796 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1799 /* Load the first subtitle track like quicktime */
1800 for( i = 0; i < p_chap->i_entry_count; i++ )
1802 for( j = 0; j < p_sys->i_tracks; j++ )
1804 mp4_track_t *tk = &p_sys->track[j];
1805 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1806 tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_CODEC_SUBT )
1809 if( j < p_sys->i_tracks )
1811 LoadChapterApple( p_demux, &p_sys->track[j] );
1817 /* Add duration if titles are enabled */
1818 if( p_sys->p_title )
1820 p_sys->p_title->i_length = CLOCK_FREQ *
1821 (uint64_t)p_sys->i_overall_duration / (uint64_t)p_sys->i_timescale;
1825 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1826 static int TrackCreateChunksIndex( demux_t *p_demux,
1827 mp4_track_t *p_demux_track )
1829 demux_sys_t *p_sys = p_demux->p_sys;
1831 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1834 unsigned int i_chunk;
1835 unsigned int i_index, i_last;
1837 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1838 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1839 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1841 return( VLC_EGENERIC );
1844 p_demux_track->i_chunk_count = BOXDATA(p_co64)->i_entry_count;
1845 if( !p_demux_track->i_chunk_count )
1847 msg_Warn( p_demux, "no chunk defined" );
1849 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1850 sizeof( mp4_chunk_t ) );
1851 if( p_demux_track->chunk == NULL )
1856 /* first we read chunk offset */
1857 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1859 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1861 ck->i_offset = BOXDATA(p_co64)->i_chunk_offset[i_chunk];
1863 ck->i_first_dts = 0;
1864 ck->p_sample_count_dts = NULL;
1865 ck->p_sample_delta_dts = NULL;
1866 ck->p_sample_count_pts = NULL;
1867 ck->p_sample_offset_pts = NULL;
1870 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1871 to be used for the sample XXX begin to 1
1872 We construct it begining at the end */
1873 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1874 i_index = BOXDATA(p_stsc)->i_entry_count;
1876 while( i_index-- > 0 )
1878 for( i_chunk = BOXDATA(p_stsc)->i_first_chunk[i_index] - 1;
1879 i_chunk < i_last; i_chunk++ )
1881 if( i_chunk >= p_demux_track->i_chunk_count )
1883 msg_Warn( p_demux, "corrupted chunk table" );
1884 return VLC_EGENERIC;
1887 p_demux_track->chunk[i_chunk].i_sample_description_index =
1888 BOXDATA(p_stsc)->i_sample_description_index[i_index];
1889 p_demux_track->chunk[i_chunk].i_sample_count =
1890 BOXDATA(p_stsc)->i_samples_per_chunk[i_index];
1892 i_last = BOXDATA(p_stsc)->i_first_chunk[i_index] - 1;
1895 if ( p_demux_track->i_chunk_count )
1897 p_demux_track->chunk[0].i_sample_first = 0;
1898 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1900 p_demux_track->chunk[i_chunk].i_sample_first =
1901 p_demux_track->chunk[i_chunk-1].i_sample_first +
1902 p_demux_track->chunk[i_chunk-1].i_sample_count;
1906 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1907 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1909 if ( p_demux_track->i_chunk_count && (
1910 p_sys->moovfragment.i_chunk_range_min_offset == 0 ||
1911 p_sys->moovfragment.i_chunk_range_min_offset > p_demux_track->chunk[0].i_offset
1913 p_sys->moovfragment.i_chunk_range_min_offset = p_demux_track->chunk[0].i_offset;
1918 static int xTTS_CountEntries( demux_t *p_demux, uint32_t *pi_entry /* out */,
1919 const uint32_t i_index,
1920 uint32_t i_index_samples_left,
1921 uint32_t i_sample_count,
1922 const uint32_t *pi_index_sample_count,
1923 const uint32_t i_table_count )
1925 uint32_t i_array_offset;
1926 while( i_sample_count > 0 )
1928 if ( likely((UINT32_MAX - i_index) >= *pi_entry) )
1929 i_array_offset = i_index + *pi_entry;
1931 return VLC_EGENERIC;
1933 if ( i_array_offset >= i_table_count )
1935 msg_Err( p_demux, "invalid index counting total samples %u %u", i_array_offset, i_table_count );
1936 return VLC_EGENERIC;
1939 if ( i_index_samples_left )
1941 if ( i_index_samples_left > i_sample_count )
1943 i_index_samples_left -= i_sample_count;
1945 *pi_entry +=1; /* No samples left, go copy */
1950 i_sample_count -= i_index_samples_left;
1951 i_index_samples_left = 0;
1958 i_sample_count -= __MIN( i_sample_count, pi_index_sample_count[i_array_offset] );
1966 static int TrackCreateSamplesIndex( demux_t *p_demux,
1967 mp4_track_t *p_demux_track )
1969 demux_sys_t *p_sys = p_demux->p_sys;
1972 MP4_Box_data_stsz_t *stsz;
1973 /* TODO use also stss and stsh table for seeking */
1974 /* FIXME use edit table */
1977 * Gives the sample size for each samples. There is also a stz2 table
1978 * (compressed form) that we need to implement TODO */
1979 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1982 /* FIXME and stz2 */
1983 msg_Warn( p_demux, "cannot find STSZ box" );
1984 return VLC_EGENERIC;
1986 stsz = p_box->data.p_stsz;
1988 /* Use stsz table to create a sample number -> sample size table */
1989 p_demux_track->i_sample_count = stsz->i_sample_count;
1990 if( stsz->i_sample_size )
1992 /* 1: all sample have the same size, so no need to construct a table */
1993 p_demux_track->i_sample_size = stsz->i_sample_size;
1994 p_demux_track->p_sample_size = NULL;
1998 /* 2: each sample can have a different size */
1999 p_demux_track->i_sample_size = 0;
2000 p_demux_track->p_sample_size =
2001 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
2002 if( p_demux_track->p_sample_size == NULL )
2005 for( uint32_t i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
2007 p_demux_track->p_sample_size[i_sample] =
2008 stsz->i_entry_size[i_sample];
2012 if ( p_demux_track->i_chunk_count )
2014 mp4_chunk_t *lastchunk = &p_demux_track->chunk[p_demux_track->i_chunk_count - 1];
2015 uint64_t i_total_size = lastchunk->i_offset;
2017 if ( p_demux_track->i_sample_size != 0 ) /* all samples have same size */
2019 i_total_size += (uint64_t)p_demux_track->i_sample_size * lastchunk->i_sample_count;
2023 if( (uint64_t)lastchunk->i_sample_count + p_demux_track->i_chunk_count - 1 > stsz->i_sample_count )
2025 msg_Err( p_demux, "invalid samples table: stsz table is too small" );
2026 return VLC_EGENERIC;
2029 for( uint32_t i=stsz->i_sample_count - lastchunk->i_sample_count;
2030 i<stsz->i_sample_count; i++)
2032 i_total_size += stsz->i_entry_size[i];
2036 if ( i_total_size > p_sys->moovfragment.i_chunk_range_max_offset )
2037 p_sys->moovfragment.i_chunk_range_max_offset = i_total_size;
2040 /* Use stts table to create a sample number -> dts table.
2041 * XXX: if we don't want to waste too much memory, we can't expand
2042 * the box! so each chunk will contain an "extract" of this table
2043 * for fast research (problem with raw stream where a sample is sometime
2044 * just channels*bits_per_sample/8 */
2046 /* FIXME: refactor STTS & CTTS, STTS having now only few extra lines and
2047 * differing in 2/2 fields and 1 signedness */
2049 mtime_t i_next_dts = 0;
2051 * Gives mapping between sample and decoding time
2053 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
2056 msg_Warn( p_demux, "cannot find STTS box" );
2057 return VLC_EGENERIC;
2061 MP4_Box_data_stts_t *stts = p_box->data.p_stts;
2063 msg_Warn( p_demux, "STTS table of %"PRIu32" entries", stts->i_entry_count );
2065 /* Create sample -> dts table per chunk */
2066 uint32_t i_index = 0;
2067 uint32_t i_current_index_samples_left = 0;
2069 for( uint32_t i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
2071 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
2072 uint32_t i_entry, i_sample_count;
2074 /* save first dts */
2075 ck->i_first_dts = i_next_dts;
2076 ck->i_last_dts = i_next_dts;
2078 /* count how many entries are needed for this chunk
2079 * for p_sample_delta_dts and p_sample_count_dts */
2082 int i_ret = xTTS_CountEntries( p_demux, &i_entry, i_index,
2083 i_current_index_samples_left,
2085 stts->pi_sample_count,
2086 stts->i_entry_count );
2087 if ( i_ret != VLC_SUCCESS )
2091 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
2092 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
2093 if( !ck->p_sample_count_dts || !ck->p_sample_delta_dts )
2095 msg_Err( p_demux, "can't allocate memory for i_entry=%"PRIu32, i_entry );
2100 i_sample_count = ck->i_sample_count;
2102 for( uint32_t i = 0; i < i_entry; i++ )
2104 if ( i_current_index_samples_left )
2106 if ( i_current_index_samples_left > i_sample_count )
2108 if ( i_sample_count ) ck->i_last_dts = i_next_dts;
2109 ck->p_sample_count_dts[i] = i_sample_count;
2110 ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2111 i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2112 i_current_index_samples_left -= i_sample_count;
2114 assert( i == i_entry - 1 );
2119 if ( i_current_index_samples_left ) ck->i_last_dts = i_next_dts;
2120 ck->p_sample_count_dts[i] = i_current_index_samples_left;
2121 ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2122 i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2123 i_sample_count -= i_current_index_samples_left;
2124 i_current_index_samples_left = 0;
2130 if ( stts->pi_sample_count[i_index] > i_sample_count )
2132 if ( i_sample_count ) ck->i_last_dts = i_next_dts;
2133 ck->p_sample_count_dts[i] = i_sample_count;
2134 ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2135 i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2136 i_current_index_samples_left = stts->pi_sample_count[i_index] - i_sample_count;
2138 assert( i == i_entry - 1 );
2139 // keep building from same index
2143 if ( stts->pi_sample_count[i_index] ) ck->i_last_dts = i_next_dts;
2144 ck->p_sample_count_dts[i] = stts->pi_sample_count[i_index];
2145 ck->p_sample_delta_dts[i] = stts->pi_sample_delta[i_index];
2146 i_next_dts += ck->p_sample_count_dts[i] * stts->pi_sample_delta[i_index];
2147 i_sample_count -= stts->pi_sample_count[i_index];
2158 * Gives the delta between decoding time (dts) and composition table (pts)
2160 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
2161 if( p_box && p_box->data.p_ctts )
2163 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
2165 msg_Warn( p_demux, "CTTS table of %"PRIu32" entries", ctts->i_entry_count );
2167 /* Create pts-dts table per chunk */
2168 uint32_t i_index = 0;
2169 uint32_t i_current_index_samples_left = 0;
2171 for( uint32_t i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
2173 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
2174 uint32_t i_entry, i_sample_count;
2176 /* count how many entries are needed for this chunk
2177 * for p_sample_offset_pts and p_sample_count_pts */
2179 int i_ret = xTTS_CountEntries( p_demux, &i_entry, i_index,
2180 i_current_index_samples_left,
2182 ctts->pi_sample_count,
2183 ctts->i_entry_count );
2184 if ( i_ret != VLC_SUCCESS )
2188 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
2189 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
2190 if( !ck->p_sample_count_pts || !ck->p_sample_offset_pts )
2192 msg_Err( p_demux, "can't allocate memory for i_entry=%"PRIu32, i_entry );
2197 i_sample_count = ck->i_sample_count;
2199 for( uint32_t i = 0; i < i_entry; i++ )
2201 if ( i_current_index_samples_left )
2203 if ( i_current_index_samples_left > i_sample_count )
2205 ck->p_sample_count_pts[i] = i_sample_count;
2206 ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2207 i_current_index_samples_left -= i_sample_count;
2209 assert( i == i_entry - 1 );
2214 ck->p_sample_count_pts[i] = i_current_index_samples_left;
2215 ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2216 i_sample_count -= i_current_index_samples_left;
2217 i_current_index_samples_left = 0;
2223 if ( ctts->pi_sample_count[i_index] > i_sample_count )
2225 ck->p_sample_count_pts[i] = i_sample_count;
2226 ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2227 i_current_index_samples_left = ctts->pi_sample_count[i_index] - i_sample_count;
2229 assert( i == i_entry - 1 );
2230 // keep building from same index
2234 ck->p_sample_count_pts[i] = ctts->pi_sample_count[i_index];
2235 ck->p_sample_offset_pts[i] = ctts->pi_sample_offset[i_index];
2236 i_sample_count -= ctts->pi_sample_count[i_index];
2246 msg_Dbg( p_demux, "track[Id 0x%x] read %"PRIu32" samples length:%"PRId64"s",
2247 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
2248 i_next_dts / p_demux_track->i_timescale );
2255 * It computes the sample rate for a video track using the given sample
2258 static void TrackGetESSampleRate( demux_t *p_demux,
2259 unsigned *pi_num, unsigned *pi_den,
2260 const mp4_track_t *p_track,
2261 unsigned i_sd_index,
2267 MP4_Box_t *p_trak = MP4_GetTrakByTrackID( MP4_BoxGet( p_demux->p_sys->p_root, "/moov" ),
2268 p_track->i_track_ID );
2269 MP4_Box_t *p_mdhd = MP4_BoxGet( p_trak, "mdia/mdhd" );
2270 if ( p_mdhd && BOXDATA(p_mdhd) )
2272 vlc_ureduce( pi_num, pi_den,
2273 (uint64_t) BOXDATA(p_mdhd)->i_timescale * p_track->i_sample_count,
2274 (uint64_t) BOXDATA(p_mdhd)->i_duration,
2279 if( p_track->i_chunk_count == 0 )
2283 const mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
2284 while( p_chunk > &p_track->chunk[0] &&
2285 p_chunk[-1].i_sample_description_index == i_sd_index )
2290 uint64_t i_sample = 0;
2291 uint64_t i_first_dts = p_chunk->i_first_dts;
2292 uint64_t i_last_dts;
2295 i_sample += p_chunk->i_sample_count;
2296 i_last_dts = p_chunk->i_last_dts;
2299 while( p_chunk < &p_track->chunk[p_track->i_chunk_count] &&
2300 p_chunk->i_sample_description_index == i_sd_index );
2302 if( i_sample > 1 && i_first_dts < i_last_dts )
2303 vlc_ureduce( pi_num, pi_den,
2304 ( i_sample - 1) * p_track->i_timescale,
2305 i_last_dts - i_first_dts,
2311 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
2313 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
2314 unsigned int i_chunk, es_out_id_t **pp_es )
2316 demux_sys_t *p_sys = p_demux->p_sys;
2317 unsigned int i_sample_description_index;
2319 if( p_sys->b_fragmented || p_track->i_chunk_count == 0 )
2320 i_sample_description_index = 1; /* XXX */
2322 i_sample_description_index =
2323 p_track->chunk[i_chunk].i_sample_description_index;
2328 if( !i_sample_description_index )
2330 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
2331 p_track->i_track_ID );
2332 return VLC_EGENERIC;
2335 MP4_Box_t *p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
2336 i_sample_description_index - 1 );
2339 ( !p_sample->data.p_payload && p_track->fmt.i_cat != SPU_ES ) )
2341 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
2342 p_track->i_track_ID );
2343 return VLC_EGENERIC;
2346 p_track->p_sample = p_sample;
2349 if( ( p_frma = MP4_BoxGet( p_track->p_sample, "sinf/frma" ) ) && p_frma->data.p_frma )
2351 msg_Warn( p_demux, "Original Format Box: %4.4s", (char *)&p_frma->data.p_frma->i_type );
2353 p_sample->i_type = p_frma->data.p_frma->i_type;
2357 switch( p_track->fmt.i_cat )
2360 if ( !p_sample->data.p_sample_vide || p_sample->i_handler != ATOM_vide )
2362 SetupVideoES( p_demux, p_track, p_sample );
2364 /* Set frame rate */
2365 TrackGetESSampleRate( p_demux,
2366 &p_track->fmt.video.i_frame_rate,
2367 &p_track->fmt.video.i_frame_rate_base,
2368 p_track, i_sample_description_index, i_chunk );
2370 p_demux->p_sys->f_fps = (float)p_track->fmt.video.i_frame_rate /
2371 (float)p_track->fmt.video.i_frame_rate_base;
2376 if ( !p_sample->data.p_sample_soun || p_sample->i_handler != ATOM_soun )
2378 SetupAudioES( p_demux, p_track, p_sample );
2382 if ( !p_sample->data.p_sample_text || p_sample->i_handler != ATOM_text )
2384 SetupSpuES( p_demux, p_track, p_sample );
2391 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
2396 /* given a time it return sample/chunk
2397 * it also update elst field of the track
2399 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
2400 int64_t i_start, uint32_t *pi_chunk,
2401 uint32_t *pi_sample )
2403 demux_sys_t *p_sys = p_demux->p_sys;
2404 MP4_Box_t *p_box_stss;
2406 unsigned int i_sample;
2407 unsigned int i_chunk;
2410 /* FIXME see if it's needed to check p_track->i_chunk_count */
2411 if( p_track->i_chunk_count == 0 )
2412 return( VLC_EGENERIC );
2414 /* handle elst (find the correct one) */
2415 MP4_TrackSetELST( p_demux, p_track, i_start );
2416 if( p_track->p_elst && p_track->BOXDATA(p_elst)->i_entry_count > 0 )
2418 MP4_Box_data_elst_t *elst = p_track->BOXDATA(p_elst);
2419 int64_t i_mvt= i_start * p_sys->i_timescale / CLOCK_FREQ;
2421 /* now calculate i_start for this elst */
2423 i_start -= p_track->i_elst_time * CLOCK_FREQ / p_sys->i_timescale;
2431 /* to track time scale */
2432 i_start = i_start * p_track->i_timescale / CLOCK_FREQ;
2433 /* add elst offset */
2434 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
2435 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
2436 elst->i_media_time[p_track->i_elst] > 0 )
2438 i_start += elst->i_media_time[p_track->i_elst];
2441 msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
2442 "ms (track)", p_track->i_elst,
2443 i_mvt * 1000 / p_sys->i_timescale,
2444 i_start * 1000 / p_track->i_timescale );
2448 /* convert absolute time to in timescale unit */
2449 i_start = i_start * p_track->i_timescale / CLOCK_FREQ;
2452 /* we start from sample 0/chunk 0, hope it won't take too much time */
2453 /* *** find good chunk *** */
2454 for( i_chunk = 0; ; i_chunk++ )
2456 if( i_chunk + 1 >= p_track->i_chunk_count )
2458 /* at the end and can't check if i_start in this chunk,
2459 it will be check while searching i_sample */
2460 i_chunk = p_track->i_chunk_count - 1;
2464 if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
2465 (uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
2471 /* *** find sample in the chunk *** */
2472 i_sample = p_track->chunk[i_chunk].i_sample_first;
2473 i_dts = p_track->chunk[i_chunk].i_first_dts;
2474 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
2477 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2478 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
2481 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
2482 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2484 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
2489 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
2493 i_sample += ( i_start - i_dts ) /
2494 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
2499 if( i_sample >= p_track->i_sample_count )
2501 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
2502 "(seeking too far) chunk=%d sample=%d",
2503 p_track->i_track_ID, i_chunk, i_sample );
2504 return( VLC_EGENERIC );
2508 /* *** Try to find nearest sync points *** */
2509 if( ( p_box_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
2511 MP4_Box_data_stss_t *p_stss = p_box_stss->data.p_stss;
2512 msg_Dbg( p_demux, "track[Id 0x%x] using Sync Sample Box (stss)",
2513 p_track->i_track_ID );
2514 for( unsigned i_index = 0; i_index < p_stss->i_entry_count; i_index++ )
2516 if( i_index >= p_stss->i_entry_count - 1 ||
2517 i_sample < p_stss->i_sample_number[i_index+1] )
2519 unsigned i_sync_sample = p_stss->i_sample_number[i_index];
2520 msg_Dbg( p_demux, "stss gives %d --> %d (sample number)",
2521 i_sample, i_sync_sample );
2523 if( i_sync_sample <= i_sample )
2525 while( i_chunk > 0 &&
2526 i_sync_sample < p_track->chunk[i_chunk].i_sample_first )
2531 while( i_chunk < p_track->i_chunk_count - 1 &&
2532 i_sync_sample >= p_track->chunk[i_chunk].i_sample_first +
2533 p_track->chunk[i_chunk].i_sample_count )
2536 i_sample = i_sync_sample;
2543 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
2544 "Sample Box (stss)", p_track->i_track_ID );
2547 *pi_chunk = i_chunk;
2548 *pi_sample = i_sample;
2553 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
2554 unsigned int i_chunk, unsigned int i_sample )
2556 bool b_reselect = false;
2558 /* now see if actual es is ok */
2559 if( p_track->i_chunk >= p_track->i_chunk_count ||
2560 p_track->chunk[p_track->i_chunk].i_sample_description_index !=
2561 p_track->chunk[i_chunk].i_sample_description_index )
2563 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
2564 p_track->i_track_ID );
2566 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
2567 p_track->p_es, &b_reselect );
2569 es_out_Del( p_demux->out, p_track->p_es );
2571 p_track->p_es = NULL;
2573 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
2575 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2576 p_track->i_track_ID );
2578 p_track->b_ok = false;
2579 p_track->b_selected = false;
2580 return VLC_EGENERIC;
2584 /* select again the new decoder */
2587 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
2590 p_track->i_chunk = i_chunk;
2591 p_track->i_sample = i_sample;
2593 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2596 /****************************************************************************
2598 ****************************************************************************
2599 * Parse track information and create all needed data to run a track
2600 * If it succeed b_ok is set to 1 else to 0
2601 ****************************************************************************/
2602 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
2603 MP4_Box_t *p_box_trak,
2604 bool b_force_enable )
2606 demux_sys_t *p_sys = p_demux->p_sys;
2608 p_track->p_track = p_box_trak;
2610 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
2611 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
2621 char language[4] = { '\0' };
2623 /* hint track unsupported */
2625 /* set default value (-> track unusable) */
2626 p_track->b_ok = false;
2627 p_track->b_enable = false;
2628 p_track->b_selected = false;
2629 p_track->b_chapter = false;
2630 p_track->b_mac_encoding = false;
2632 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
2639 /* do we launch this track by default ? */
2641 ( ( BOXDATA(p_tkhd)->i_flags&MP4_TRACK_ENABLED ) != 0 );
2642 if( !p_track->b_enable )
2643 p_track->fmt.i_priority = ES_PRIORITY_NOT_DEFAULTABLE;
2645 p_track->i_track_ID = BOXDATA(p_tkhd)->i_track_ID;
2647 p_track->i_width = BOXDATA(p_tkhd)->i_width / BLOCK16x16;
2648 p_track->i_height = BOXDATA(p_tkhd)->i_height / BLOCK16x16;
2649 p_track->f_rotation = BOXDATA(p_tkhd)->f_rotation;
2653 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
2656 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
2657 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
2659 if( ( !p_mdhd )||( !p_hdlr ) )
2664 p_track->i_timescale = BOXDATA(p_mdhd)->i_timescale;
2665 if( p_track->i_timescale == 0 )
2668 memcpy( &language, BOXDATA(p_mdhd)->rgs_language, 3 );
2669 p_track->b_mac_encoding = BOXDATA(p_mdhd)->b_mac_encoding;
2671 switch( p_hdlr->data.p_hdlr->i_handler_type )
2674 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2678 p_track->fmt.i_cat = AUDIO_ES;
2682 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2686 p_track->fmt.i_cat = VIDEO_ES;
2693 p_track->fmt.i_codec = VLC_CODEC_TX3G;
2694 p_track->fmt.i_cat = SPU_ES;
2697 /* closed captions */
2699 p_track->fmt.i_cat = SPU_ES;
2706 p_track->i_elst = 0;
2707 p_track->i_elst_time = 0;
2708 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2710 MP4_Box_data_elst_t *elst = BOXDATA(p_elst);
2713 msg_Warn( p_demux, "elst box found" );
2714 for( i = 0; i < elst->i_entry_count; i++ )
2716 msg_Dbg( p_demux, " - [%d] duration=%"PRId64"ms media time=%"PRId64
2717 "ms) rate=%d.%d", i,
2718 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2719 elst->i_media_time[i] >= 0 ?
2720 (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2722 elst->i_media_rate_integer[i],
2723 elst->i_media_rate_fraction[i] );
2730 p_dinf = MP4_BoxGet( p_minf, "dinf" );
2732 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2733 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2739 if( *language && strcmp( language, "```" ) && strcmp( language, "und" ) )
2741 p_track->fmt.psz_language = strdup( language );
2744 p_udta = MP4_BoxGet( p_box_trak, "udta" );
2747 MP4_Box_t *p_box_iter;
2748 for( p_box_iter = p_udta->p_first; p_box_iter != NULL;
2749 p_box_iter = p_box_iter->p_next )
2751 switch( p_box_iter->i_type )
2755 p_track->fmt.psz_description =
2756 strdup( p_box_iter->data.p_string->psz_text );
2763 /* Create chunk index table and sample index table */
2764 if( TrackCreateChunksIndex( p_demux,p_track ) ||
2765 TrackCreateSamplesIndex( p_demux, p_track ) )
2767 msg_Err( p_demux, "cannot create chunks index" );
2768 return; /* cannot create chunks index */
2771 p_track->i_chunk = 0;
2772 p_track->i_sample = 0;
2774 /* Mark chapter only track */
2775 if( p_sys->p_tref_chap )
2777 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2780 for( i = 0; i < p_chap->i_entry_count; i++ )
2782 if( p_track->i_track_ID == p_chap->i_track_ID[i] &&
2783 p_track->fmt.i_cat == UNKNOWN_ES )
2785 p_track->b_chapter = true;
2786 p_track->b_enable = false;
2792 const MP4_Box_t *p_tsel;
2794 if( b_force_enable &&
2795 ( p_track->fmt.i_cat == VIDEO_ES || p_track->fmt.i_cat == AUDIO_ES ) )
2797 msg_Warn( p_demux, "Enabling track[Id 0x%x] (buggy file without enabled track)",
2798 p_track->i_track_ID );
2799 p_track->b_enable = true;
2800 p_track->fmt.i_priority = ES_PRIORITY_SELECTABLE_MIN;
2802 else if ( (p_tsel = MP4_BoxGet( p_box_trak, "udta/tsel" )) )
2804 if ( BOXDATA(p_tsel) && BOXDATA(p_tsel)->i_switch_group )
2806 p_track->i_switch_group = BOXDATA(p_tsel)->i_switch_group;
2807 int i_priority = ES_PRIORITY_SELECTABLE_MIN;
2808 for ( unsigned int i = 0; i < p_sys->i_tracks; i++ )
2810 const mp4_track_t *p_other = &p_sys->track[i];
2811 if( p_other && p_other != p_track &&
2812 p_other->fmt.i_cat == p_track->fmt.i_cat &&
2813 p_track->i_switch_group == p_other->i_switch_group )
2814 i_priority = __MAX( i_priority, p_other->fmt.i_priority + 1 );
2816 /* VLC only support ES priority for AUDIO_ES and SPU_ES.
2817 If there's another VIDEO_ES in the same group, we need to unselect it then */
2818 if ( p_track->fmt.i_cat == VIDEO_ES && i_priority > ES_PRIORITY_SELECTABLE_MIN )
2819 p_track->fmt.i_priority = ES_PRIORITY_NOT_DEFAULTABLE;
2821 p_track->fmt.i_priority = i_priority;
2824 /* If there's no tsel, try to enable the track coming first in edit list */
2825 else if ( p_track->p_elst && p_track->fmt.i_priority == ES_PRIORITY_SELECTABLE_MIN )
2827 #define MAX_SELECTABLE (INT_MAX - ES_PRIORITY_SELECTABLE_MIN)
2828 for ( uint32_t i=0; i<p_track->BOXDATA(p_elst)->i_entry_count; i++ )
2830 if ( p_track->BOXDATA(p_elst)->i_media_time[i] >= 0 &&
2831 p_track->BOXDATA(p_elst)->i_segment_duration[i] )
2833 /* We do selection by inverting start time into priority.
2834 The track with earliest edit will have the highest prio */
2835 const int i_time = __MIN( MAX_SELECTABLE, p_track->BOXDATA(p_elst)->i_media_time[i] );
2836 p_track->fmt.i_priority = ES_PRIORITY_SELECTABLE_MIN + MAX_SELECTABLE - i_time;
2842 p_track->p_es = NULL;
2843 if( TrackCreateES( p_demux,
2844 p_track, p_track->i_chunk,
2845 p_track->b_chapter ? NULL : &p_track->p_es ) )
2847 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2848 p_track->i_track_ID );
2851 p_track->b_ok = true;
2855 for( i = 0; i < p_track->i_chunk_count; i++ )
2857 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2858 i, p_track->chunk[i].i_sample_count,
2859 p_track->chunk[i].i_first_dts );
2866 static void FreeAndResetChunk( mp4_chunk_t *ck )
2868 free( ck->p_sample_count_dts );
2869 free( ck->p_sample_delta_dts );
2870 free( ck->p_sample_count_pts );
2871 free( ck->p_sample_offset_pts );
2872 free( ck->p_sample_size );
2873 for( uint32_t i = 0; i < ck->i_sample_count; i++ )
2874 free( ck->p_sample_data[i] );
2875 free( ck->p_sample_data );
2876 memset( ck, 0, sizeof( mp4_chunk_t ) );
2879 /****************************************************************************
2881 ****************************************************************************
2882 * Destroy a track created by MP4_TrackCreate.
2883 ****************************************************************************/
2884 static void MP4_TrackDestroy( mp4_track_t *p_track )
2886 unsigned int i_chunk;
2888 p_track->b_ok = false;
2889 p_track->b_enable = false;
2890 p_track->b_selected = false;
2892 es_format_Clean( &p_track->fmt );
2894 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2896 if( p_track->chunk )
2898 FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2899 FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2901 FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2902 FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2905 FREENULL( p_track->chunk );
2906 if( p_track->cchunk ) {
2907 FreeAndResetChunk( p_track->cchunk );
2908 FREENULL( p_track->cchunk );
2911 if( !p_track->i_sample_size )
2913 FREENULL( p_track->p_sample_size );
2916 if ( p_track->asfinfo.p_frame )
2917 block_ChainRelease( p_track->asfinfo.p_frame );
2920 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2923 if( !p_track->b_ok || p_track->b_chapter )
2925 return VLC_EGENERIC;
2928 if( p_track->b_selected )
2930 msg_Warn( p_demux, "track[Id 0x%x] already selected",
2931 p_track->i_track_ID );
2935 return MP4_TrackSeek( p_demux, p_track, i_start );
2938 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2940 if( !p_track->b_ok || p_track->b_chapter )
2945 if( !p_track->b_selected )
2947 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2948 p_track->i_track_ID );
2953 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2954 p_track->p_es, false );
2957 p_track->b_selected = false;
2960 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2966 if( !p_track->b_ok || p_track->b_chapter )
2967 return VLC_EGENERIC;
2969 p_track->b_selected = false;
2971 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2972 &i_chunk, &i_sample ) )
2974 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2975 p_track->i_track_ID );
2976 return VLC_EGENERIC;
2979 p_track->b_selected = true;
2980 if( !TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) )
2981 p_track->b_selected = true;
2983 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2988 * 3 types: for audio
2991 #define QT_V0_MAX_SAMPLES 1024
2992 static uint32_t MP4_TrackGetReadSize( mp4_track_t *p_track, uint32_t *pi_nb_samples )
2994 uint32_t i_size = 0;
2997 if ( p_track->i_sample == p_track->i_sample_count )
3000 if ( p_track->fmt.i_cat != AUDIO_ES )
3004 if( p_track->i_sample_size == 0 ) /* all sizes are different */
3005 return p_track->p_sample_size[p_track->i_sample];
3007 return p_track->i_sample_size;
3011 const MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
3012 const mp4_chunk_t *p_chunk = &p_track->chunk[p_track->i_chunk];
3013 uint32_t i_max_samples = p_chunk->i_sample_count - p_chunk->i_sample;
3015 /* Group audio packets so we don't call demux for single sample unit */
3016 if( p_track->fmt.i_original_fourcc == VLC_CODEC_DVD_LPCM &&
3017 p_soun->i_constLPCMframesperaudiopacket &&
3018 p_soun->i_constbytesperaudiopacket )
3020 /* uncompressed case */
3021 uint32_t i_packets = i_max_samples / p_soun->i_constLPCMframesperaudiopacket;
3022 if ( UINT32_MAX / p_soun->i_constbytesperaudiopacket < i_packets )
3023 i_packets = UINT32_MAX / p_soun->i_constbytesperaudiopacket;
3024 *pi_nb_samples = i_packets * p_soun->i_constLPCMframesperaudiopacket;
3025 return i_packets * p_soun->i_constbytesperaudiopacket;
3028 /* all samples have a different size */
3029 if( p_track->i_sample_size == 0 )
3032 return p_track->p_sample_size[p_track->i_sample];
3035 if( p_soun->i_qt_version == 1 )
3037 if ( p_soun->i_compressionid == 0xFFFE )
3039 *pi_nb_samples = 1; /* != number of audio samples */
3040 if ( p_track->i_sample_size )
3041 return p_track->i_sample_size;
3043 return p_track->p_sample_size[p_track->i_sample];
3045 else if ( p_soun->i_compressionid != 0 || p_soun->i_bytes_per_sample > 1 ) /* compressed */
3047 /* in this case we are dealing with compressed data
3048 -2 in V1: additional fields are meaningless (VBR and such) */
3049 *pi_nb_samples = i_max_samples;//p_track->chunk[p_track->i_chunk].i_sample_count;
3050 if( p_track->fmt.audio.i_blockalign > 1 )
3051 *pi_nb_samples = p_soun->i_sample_per_packet;
3052 i_size = *pi_nb_samples / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
3055 else /* uncompressed case */
3058 if( p_track->fmt.audio.i_blockalign > 1 )
3061 i_packets = i_max_samples / p_soun->i_sample_per_packet;
3063 if ( UINT32_MAX / p_soun->i_bytes_per_frame < i_packets )
3064 i_packets = UINT32_MAX / p_soun->i_bytes_per_frame;
3066 *pi_nb_samples = i_packets * p_soun->i_sample_per_packet;
3067 i_size = i_packets * p_soun->i_bytes_per_frame;
3072 /* uncompressed v0 */
3074 for( uint32_t i=p_track->i_sample;
3075 i<p_chunk->i_sample_first+p_chunk->i_sample_count &&
3076 i<p_track->i_sample_count;
3080 if ( p_track->i_sample_size == 0 )
3081 i_size += p_track->p_sample_size[i];
3083 i_size += p_track->i_sample_size;
3084 if ( *pi_nb_samples == QT_V0_MAX_SAMPLES )
3089 //fprintf( stderr, "size=%d\n", i_size );
3093 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
3095 unsigned int i_sample;
3098 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
3100 if( p_track->i_sample_size )
3102 MP4_Box_data_sample_soun_t *p_soun =
3103 p_track->p_sample->data.p_sample_soun;
3105 if( p_track->fmt.i_cat != AUDIO_ES || p_soun->i_qt_version == 0 ||
3106 p_track->fmt.audio.i_blockalign <= 1 )
3108 i_pos += ( p_track->i_sample -
3109 p_track->chunk[p_track->i_chunk].i_sample_first ) *
3110 p_track->i_sample_size;
3114 /* we read chunk by chunk unless a blockalign is requested */
3115 i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) /
3116 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
3121 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
3122 i_sample < p_track->i_sample; i_sample++ )
3124 i_pos += p_track->p_sample_size[i_sample];
3131 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track, uint32_t i_samples )
3133 if ( UINT32_MAX - p_track->i_sample < i_samples )
3135 p_track->i_sample = UINT32_MAX;
3136 return VLC_EGENERIC;
3139 p_track->i_sample += i_samples;
3141 if( p_track->i_sample >= p_track->i_sample_count )
3142 return VLC_EGENERIC;
3144 /* Have we changed chunk ? */
3145 if( p_track->i_sample >=
3146 p_track->chunk[p_track->i_chunk].i_sample_first +
3147 p_track->chunk[p_track->i_chunk].i_sample_count )
3149 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
3150 p_track->i_sample ) )
3152 msg_Warn( p_demux, "track[0x%x] will be disabled "
3153 "(cannot restart decoder)", p_track->i_track_ID );
3154 MP4_TrackUnselect( p_demux, p_track );
3155 return VLC_EGENERIC;
3159 /* Have we changed elst */
3160 if( p_track->p_elst && p_track->BOXDATA(p_elst)->i_entry_count > 0 )
3162 demux_sys_t *p_sys = p_demux->p_sys;
3163 MP4_Box_data_elst_t *elst = p_track->BOXDATA(p_elst);
3164 uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
3165 p_sys->i_timescale / CLOCK_FREQ;
3167 if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
3168 i_mvt >= p_track->i_elst_time +
3169 elst->i_segment_duration[p_track->i_elst] )
3171 MP4_TrackSetELST( p_demux, p_track,
3172 MP4_TrackGetDTS( p_demux, p_track ) );
3179 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
3182 demux_sys_t *p_sys = p_demux->p_sys;
3183 int i_elst_last = tk->i_elst;
3185 /* handle elst (find the correct one) */
3187 tk->i_elst_time = 0;
3188 if( tk->p_elst && tk->BOXDATA(p_elst)->i_entry_count > 0 )
3190 MP4_Box_data_elst_t *elst = tk->BOXDATA(p_elst);
3191 int64_t i_mvt= i_time * p_sys->i_timescale / CLOCK_FREQ;
3193 for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
3195 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
3197 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
3201 tk->i_elst_time += i_dur;
3204 if( (unsigned int)tk->i_elst >= elst->i_entry_count )
3206 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
3207 tk->i_elst = elst->i_entry_count - 1;
3208 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
3211 if( elst->i_media_time[tk->i_elst] < 0 )
3214 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
3217 if( i_elst_last != tk->i_elst )
3219 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
3223 /******************************************************************************
3224 * Here are the functions used for fragmented MP4
3225 *****************************************************************************/
3228 * It computes the sample rate for a video track using current video chunk
3230 static void ChunkGetESSampleRate( unsigned *pi_num, unsigned *pi_den,
3231 const mp4_track_t *p_track )
3233 if( p_track->cchunk->i_last_dts == 0 )
3240 const mp4_chunk_t *p_chunk = p_track->cchunk;
3242 uint32_t i_sample = p_chunk->i_sample_count;
3243 uint64_t i_first_dts = p_chunk->i_first_dts;
3244 uint64_t i_last_dts = p_chunk->i_last_dts;
3246 if( i_sample > 1 && i_first_dts < i_last_dts )
3247 vlc_ureduce( pi_num, pi_den,
3248 ( i_sample - 1) * p_track->i_timescale,
3249 i_last_dts - i_first_dts,
3254 * Build raw avcC box (without the 8 bytes header)
3255 * \return The size of the box.
3257 static int build_raw_avcC( uint8_t **p_extra, const uint8_t *CodecPrivateData,
3258 const unsigned cpd_len )
3261 unsigned sps_len = 0, pps_len = 0;
3262 const uint32_t mark = 0x00000001;
3264 assert( CodecPrivateData[0] == 0 );
3265 assert( CodecPrivateData[1] == 0 );
3266 assert( CodecPrivateData[2] == 0 );
3267 assert( CodecPrivateData[3] == 1 );
3269 uint32_t length = cpd_len + 3;
3270 avcC = calloc( length, 1 );
3271 if( unlikely( avcC == NULL ) )
3274 uint8_t *sps = avcC + 8;
3276 uint32_t candidate = ~mark;
3277 CodecPrivateData += 4;
3278 for( unsigned i = 0; i < cpd_len - 4; i++ )
3280 sps[i] = CodecPrivateData[i];
3281 candidate = (candidate << 8) | CodecPrivateData[i];
3282 if( candidate == mark )
3293 uint8_t *pps = sps + sps_len + 3;
3294 pps_len = cpd_len - sps_len - 4 * 2;
3295 memcpy( pps, CodecPrivateData + sps_len + 4, pps_len );
3298 uint8_t AVCProfileIndication = 0x64;
3299 uint8_t profile_compatibility = 0x40;
3300 uint8_t AVCLevelIndication = 0x1f;
3301 uint8_t lengthSizeMinusOne = 0x03;
3304 avcC[1] = AVCProfileIndication;
3305 avcC[2] = profile_compatibility;
3306 avcC[3] = AVCLevelIndication;
3307 avcC[4] = 0xfc + lengthSizeMinusOne;
3309 avcC[6] = (sps_len & 0xff00)>>8;
3310 avcC[7] = sps_len & 0xff;
3312 avcC[8+sps_len] = 1;
3313 avcC[9+sps_len] = (pps_len & 0xff00) >> 8;
3314 avcC[10+sps_len] = pps_len & 0xff;
3321 * Build a mp4_track_t from a StraBox
3324 static inline int MP4_SetCodecExtraData( es_format_t *fmt, MP4_Box_data_stra_t *p_data )
3326 fmt->i_extra = p_data->cpd_len;
3327 fmt->p_extra = malloc( p_data->cpd_len );
3328 if( unlikely( !fmt->p_extra ) )
3330 memcpy( fmt->p_extra, p_data->CodecPrivateData, p_data->cpd_len );
3334 static int MP4_frg_TrackCreate( demux_t *p_demux, mp4_track_t *p_track, MP4_Box_t *p_stra )
3336 demux_sys_t *p_sys = p_demux->p_sys;
3338 MP4_Box_data_stra_t *p_data = BOXDATA(p_stra);
3340 return VLC_EGENERIC;
3342 p_track->b_ok = true;
3343 p_track->b_selected = false;
3344 p_track->i_sample_count = UINT32_MAX;
3346 p_track->i_timescale = p_sys->i_timescale;
3347 p_track->i_width = p_data->MaxWidth;
3348 p_track->i_height = p_data->MaxHeight;
3349 p_track->i_track_ID = p_data->i_track_ID;
3351 es_format_t *fmt = &p_track->fmt;
3353 return VLC_EGENERIC;
3355 es_format_Init( fmt, p_data->i_es_cat, 0 );
3357 /* Set language FIXME */
3358 fmt->psz_language = strdup( "en" );
3360 fmt->i_original_fourcc = p_data->FourCC;
3361 fmt->i_codec = vlc_fourcc_GetCodec( fmt->i_cat, p_data->FourCC );
3363 uint8_t **p_extra = (uint8_t **)&fmt->p_extra;
3364 /* See http://msdn.microsoft.com/en-us/library/ff728116%28v=vs.90%29.aspx
3365 * for MS weird use of FourCC*/
3366 switch( fmt->i_cat )
3369 if( p_data->FourCC == VLC_FOURCC( 'A', 'V', 'C', '1' ) ||
3370 p_data->FourCC == VLC_FOURCC( 'A', 'V', 'C', 'B' ) ||
3371 p_data->FourCC == VLC_FOURCC( 'H', '2', '6', '4' ) )
3373 fmt->i_extra = build_raw_avcC( p_extra,
3374 p_data->CodecPrivateData, p_data->cpd_len );
3378 ret = MP4_SetCodecExtraData( fmt, p_data );
3379 if( ret != VLC_SUCCESS )
3383 fmt->video.i_width = p_data->MaxWidth;
3384 fmt->video.i_height = p_data->MaxHeight;
3385 fmt->video.i_bits_per_pixel = 0x18;
3386 fmt->video.i_visible_width = p_data->MaxWidth;
3387 fmt->video.i_visible_height = p_data->MaxHeight;
3390 ChunkGetESSampleRate( &fmt->video.i_frame_rate,
3391 &fmt->video.i_frame_rate_base, p_track );
3393 if( fmt->video.i_frame_rate_base != 0 )
3395 p_demux->p_sys->f_fps = (float)fmt->video.i_frame_rate /
3396 (float)fmt->video.i_frame_rate_base;
3399 p_demux->p_sys->f_fps = 24;
3404 fmt->audio.i_channels = p_data->Channels;
3405 fmt->audio.i_rate = p_data->SamplingRate;
3406 fmt->audio.i_bitspersample = p_data->BitsPerSample;
3407 fmt->audio.i_blockalign = p_data->nBlockAlign;
3409 fmt->i_bitrate = p_data->Bitrate;
3411 ret = MP4_SetCodecExtraData( fmt, p_data );
3412 if( ret != VLC_SUCCESS )
3425 * Return the track identified by tid
3427 static mp4_track_t *MP4_frg_GetTrackByID( demux_t *p_demux, const uint32_t tid )
3429 demux_sys_t *p_sys = p_demux->p_sys;
3431 mp4_track_t *ret = NULL;
3432 for( unsigned i = 0; i < p_sys->i_tracks; i++ )
3434 ret = &p_sys->track[i];
3435 if( ret->i_track_ID == tid )
3438 msg_Err( p_demux, "MP4_frg_GetTrack: track %"PRIu32" not found!", tid );
3442 static void FlushChunk( demux_t *p_demux, mp4_track_t *tk )
3444 msg_Dbg( p_demux, "Flushing chunk for track id %u", tk->i_track_ID );
3445 mp4_chunk_t *ck = tk->cchunk;
3446 while( ck->i_sample < ck->i_sample_count )
3451 if( ck->p_sample_size == NULL || ck->p_sample_data == NULL )
3454 uint32_t sample_size = ck->p_sample_size[ck->i_sample];
3455 assert( sample_size > 0 );
3456 p_block = block_Alloc( sample_size );
3457 if( unlikely( !p_block ) )
3460 uint8_t *src = ck->p_sample_data[ck->i_sample];
3461 memcpy( p_block->p_buffer, src, sample_size );
3465 p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
3467 if( MP4_TrackGetPTSDelta( p_demux, tk, &i_delta ) )
3468 p_block->i_pts = p_block->i_dts + i_delta;
3469 else if( tk->fmt.i_cat != VIDEO_ES )
3470 p_block->i_pts = p_block->i_dts;
3472 p_block->i_pts = VLC_TS_INVALID;
3474 MP4_Block_Send( p_demux, tk, p_block );
3482 * \Note If we call that function too soon,
3483 * before the track has been selected by MP4_TrackSelect
3484 * (during the first execution of Demux), then the track gets disabled
3486 static int ReInitDecoder( demux_t *p_demux, mp4_track_t *p_track )
3488 demux_sys_t *p_sys = p_demux->p_sys;
3490 uint32_t i_sample = 0;
3491 bool b_smooth = false;
3492 MP4_Box_t *p_stra = NULL, *p_trak = NULL;
3494 if( !CmpUUID( &p_sys->p_root->p_first->i_uuid, &SmooBoxUUID ) )
3499 p_stra = MP4_BoxGet( p_sys->p_root, "uuid/uuid[0]" );
3500 if( !p_stra || CmpUUID( &p_stra->i_uuid, &StraBoxUUID ) )
3501 return VLC_EGENERIC;
3505 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[0]" );
3507 return VLC_EGENERIC;
3510 i_sample = p_track->i_sample;
3511 es_out_Del( p_demux->out, p_track->p_es );
3512 es_format_Clean( &p_track->fmt );
3515 MP4_frg_TrackCreate( p_demux, p_track, p_stra );
3517 MP4_TrackCreate( p_demux, p_track, p_trak, true );
3519 p_track->i_sample = i_sample;
3521 /* Temporary hack until we support track selection */
3522 p_track->b_selected = true;
3523 p_track->b_ok = true;
3524 p_track->b_enable = true;
3526 p_track->p_es = es_out_Add( p_demux->out, &p_track->fmt );
3527 p_track->b_codec_need_restart = false;
3533 * This function fills a mp4_chunk_t structure from a MP4_Box_t (p_chunk).
3534 * The 'i_tk_id' argument returns the ID of the track the chunk belongs to.
3535 * \note p_chunk usually contains a 'moof' and a 'mdat', and might contain a 'sidx'.
3536 * \return VLC_SUCCESS, VLC_EGENERIC or VLC_ENOMEM.
3538 static int MP4_frg_GetChunk( demux_t *p_demux, MP4_Box_t *p_chunk, unsigned *i_tk_id )
3540 MP4_Box_t *p_sidx = MP4_BoxGet( p_chunk, "sidx" );
3541 MP4_Box_t *p_moof = MP4_BoxGet( p_chunk, "moof" );
3544 msg_Warn( p_demux, "no moof box found!" );
3545 return VLC_EGENERIC;
3548 MP4_Box_t *p_traf = MP4_BoxGet( p_moof, "traf" );
3551 msg_Warn( p_demux, "no traf box found!" );
3552 return VLC_EGENERIC;
3555 MP4_Box_t *p_tfhd = MP4_BoxGet( p_traf, "tfhd" );
3558 msg_Warn( p_demux, "no tfhd box found!" );
3559 return VLC_EGENERIC;
3562 uint32_t i_track_ID = BOXDATA(p_tfhd)->i_track_ID;
3563 *i_tk_id = i_track_ID;
3564 assert( i_track_ID > 0 );
3565 msg_Dbg( p_demux, "GetChunk: track ID is %"PRIu32"", i_track_ID );
3567 mp4_track_t *p_track = MP4_frg_GetTrackByID( p_demux, i_track_ID );
3569 return VLC_EGENERIC;
3571 mp4_chunk_t *ret = p_track->cchunk;
3573 if( BOXDATA(p_tfhd)->b_empty )
3574 msg_Warn( p_demux, "No samples in this chunk!" );
3576 /* Usually we read 100 ms of each track. However, suppose we have two tracks,
3577 * Ta and Tv (audio and video). Suppose also that Ta is the first track to be
3578 * read, i.e. we read 100 ms of Ta, then 100 ms of Tv, then 100 ms of Ta,
3579 * and so on. Finally, suppose that we get the chunks the other way around,
3580 * i.e. first a chunk of Tv, then a chunk of Ta, then a chunk of Tv, and so on.
3581 * In that case, it is very likely that at some point, Ta->cchunk or Tv->cchunk
3582 * is not emptied when MP4_frg_GetChunks is called. It is therefore necessary to
3583 * flush it, i.e. send to the decoder the samples not yet sent.
3584 * Note that all the samples to be flushed should worth less than 100 ms,
3585 * (though I did not do the formal proof) and thus this flushing mechanism
3586 * should not cause A/V sync issues, or delays or whatever.
3588 if( ret->i_sample < ret->i_sample_count )
3589 FlushChunk( p_demux, p_track );
3591 if( ret->i_sample_count )
3592 FreeAndResetChunk( ret );
3594 uint32_t default_duration = 0;
3595 if( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DFLT_SAMPLE_DURATION )
3596 default_duration = BOXDATA(p_tfhd)->i_default_sample_duration;
3598 uint32_t default_size = 0;
3599 if( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DFLT_SAMPLE_SIZE )
3600 default_size = BOXDATA(p_tfhd)->i_default_sample_size;
3602 MP4_Box_t *p_trun = MP4_BoxGet( p_traf, "trun");
3605 msg_Warn( p_demux, "no trun box found!" );
3606 return VLC_EGENERIC;
3608 MP4_Box_data_trun_t *p_trun_data = p_trun->data.p_trun;
3610 ret->i_sample_count = p_trun_data->i_sample_count;
3611 assert( ret->i_sample_count > 0 );
3612 ret->i_sample_description_index = 1; /* seems to be always 1, is it? */
3613 ret->i_sample_first = p_track->i_sample_first;
3614 p_track->i_sample_first += ret->i_sample_count;
3616 ret->i_first_dts = p_track->i_first_dts;
3618 /* XXX I already saw DASH content with no default_duration and no
3619 * MP4_TRUN_SAMPLE_DURATION flag, but a sidx box was present.
3620 * This chunk of code might be buggy with segments having
3621 * more than one subsegment. */
3622 if( !default_duration )
3624 MP4_Box_t *p_trex = MP4_GetTrexByTrackID( p_moof, i_track_ID );
3626 default_duration = BOXDATA(p_trex)->i_default_sample_duration;
3629 MP4_Box_data_sidx_t *p_sidx_data = BOXDATA(p_sidx);
3630 assert( p_sidx_data->i_reference_count == 1 );
3632 if( p_sidx_data->i_timescale == 0 )
3633 return VLC_EGENERIC;
3635 unsigned i_chunk_duration = p_sidx_data->p_items[0].i_subsegment_duration /
3636 p_sidx_data->i_timescale;
3637 default_duration = i_chunk_duration * p_track->i_timescale / ret->i_sample_count;
3642 msg_Dbg( p_demux, "Default sample duration is %"PRIu32, default_duration );
3644 ret->p_sample_count_dts = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3645 ret->p_sample_delta_dts = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3647 if( !ret->p_sample_count_dts || !ret->p_sample_delta_dts )
3650 ret->p_sample_count_pts = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3651 if( !ret->p_sample_count_pts )
3654 if( p_trun_data->i_flags & MP4_TRUN_SAMPLE_TIME_OFFSET )
3656 ret->p_sample_offset_pts = calloc( ret->i_sample_count, sizeof( int32_t ) );
3657 if( !ret->p_sample_offset_pts )
3661 ret->p_sample_size = calloc( ret->i_sample_count, sizeof( uint32_t ) );
3662 if( !ret->p_sample_size )
3665 ret->p_sample_data = calloc( ret->i_sample_count, sizeof( uint8_t * ) );
3666 if( !ret->p_sample_data )
3669 uint32_t dur = 0, i_mdatlen = 0, len;
3670 uint32_t chunk_duration = 0, chunk_size = 0;
3672 /* Skip header of mdat */
3674 int i_read = stream_Read( p_demux->s, &mdat, 8 );
3675 i_mdatlen = GetDWBE( mdat );
3676 if ( i_read < 8 || i_mdatlen < 8 ||
3677 VLC_FOURCC( mdat[4], mdat[5], mdat[6], mdat[7] ) != ATOM_mdat )
3678 return VLC_EGENERIC;
3680 for( uint32_t i = 0; i < ret->i_sample_count; i++)
3682 if( p_trun_data->i_flags & MP4_TRUN_SAMPLE_DURATION )
3683 dur = p_trun_data->p_samples[i].i_duration;
3685 dur = default_duration;
3686 ret->p_sample_delta_dts[i] = dur;
3687 chunk_duration += dur;
3689 ret->p_sample_count_dts[i] = ret->p_sample_count_pts[i] = 1;
3691 if( ret->p_sample_offset_pts )
3693 if ( p_trun_data->i_version == 0 )
3694 ret->p_sample_offset_pts[i] = (int32_t) p_trun_data->p_samples[i].i_composition_time_offset;
3696 ret->p_sample_offset_pts[i] = __MIN( INT32_MAX, p_trun_data->p_samples[i].i_composition_time_offset );
3699 if( p_trun_data->i_flags & MP4_TRUN_SAMPLE_SIZE )
3700 len = ret->p_sample_size[i] = p_trun_data->p_samples[i].i_size;
3702 len = ret->p_sample_size[i] = default_size;
3704 if ( chunk_size + len > ( i_mdatlen - 8 ) )
3705 return VLC_EGENERIC;
3707 ret->p_sample_data[i] = malloc( len );
3708 if( ret->p_sample_data[i] == NULL )
3710 uint32_t i_read = stream_ReadU32( p_demux->s, ret->p_sample_data[i], len );
3712 return VLC_EGENERIC;
3715 ret->i_last_dts = ret->i_first_dts + chunk_duration - dur;
3716 p_track->i_first_dts = chunk_duration + ret->i_first_dts;
3718 if( p_track->b_codec_need_restart &&
3719 p_track->fmt.i_cat == VIDEO_ES )
3720 ReInitDecoder( p_demux, p_track );
3722 /* Skip if we didn't reach the end of mdat box */
3723 if ( chunk_size < (i_mdatlen - 8) )
3724 stream_ReadU32( p_demux->s, NULL, i_mdatlen - chunk_size - 8 );
3726 p_track->b_has_non_empty_cchunk = true;
3732 * Get the next chunk of the track identified by i_tk_id.
3733 * \Note We don't want to seek all the time, so if the first chunk given by the
3734 * input method doesn't belong to the right track, we don't throw it away,
3735 * and so, in general, this function fetch more than one chunk.
3736 * Not to mention that a new init fragment might be put everywhere
3737 * between two chunks by the input method.
3739 static int MP4_frg_GetChunks( demux_t *p_demux, const unsigned i_tk_id )
3741 demux_sys_t *p_sys = p_demux->p_sys;
3742 mp4_track_t *p_track;
3744 for( unsigned i = 0; i < p_sys->i_tracks; i++ )
3746 MP4_Box_t *p_chunk = MP4_BoxGetNextChunk( p_demux->s );
3748 return VLC_EGENERIC;
3750 if( !p_chunk->p_first )
3751 goto MP4_frg_GetChunks_Error;
3752 uint32_t i_type = p_chunk->p_first->i_type;
3754 if( i_type == ATOM_uuid || i_type == ATOM_ftyp )
3756 MP4_BoxFree( p_demux->s, p_sys->p_root );
3757 p_sys->p_root = p_chunk;
3759 if( i_type == ATOM_ftyp ) /* DASH */
3761 MP4_Box_t *p_tkhd = MP4_BoxGet( p_chunk, "/moov/trak[0]/tkhd" );
3764 msg_Warn( p_demux, "No tkhd found!" );
3765 goto MP4_frg_GetChunks_Error;
3767 tid = p_tkhd->data.p_tkhd->i_track_ID;
3769 else /* Smooth Streaming */
3771 assert( !CmpUUID( &p_chunk->p_first->i_uuid, &SmooBoxUUID ) );
3772 MP4_Box_t *p_stra = MP4_BoxGet( p_chunk, "/uuid/uuid[0]" );
3773 if( !p_stra || CmpUUID( &p_stra->i_uuid, &StraBoxUUID ) )
3775 msg_Warn( p_demux, "No StraBox found!" );
3776 goto MP4_frg_GetChunks_Error;
3778 tid = p_stra->data.p_stra->i_track_ID;
3781 p_track = MP4_frg_GetTrackByID( p_demux, tid );
3783 goto MP4_frg_GetChunks_Error;
3784 p_track->b_codec_need_restart = true;
3786 return MP4_frg_GetChunks( p_demux, i_tk_id );
3789 if( MP4_frg_GetChunk( p_demux, p_chunk, &tid ) != VLC_SUCCESS )
3790 goto MP4_frg_GetChunks_Error;
3792 MP4_BoxFree( p_demux->s, p_chunk );
3794 if( tid == i_tk_id )
3799 MP4_frg_GetChunks_Error:
3800 MP4_BoxFree( p_demux->s, p_chunk );
3801 return VLC_EGENERIC;
3807 static int MP4_frg_TrackSelect( demux_t *p_demux, mp4_track_t *p_track )
3809 if( !p_track->b_ok || p_track->b_chapter )
3811 return VLC_EGENERIC;
3814 if( p_track->b_selected )
3816 msg_Warn( p_demux, "track[Id 0x%x] already selected", p_track->i_track_ID );
3820 msg_Dbg( p_demux, "Select track id %u", p_track->i_track_ID );
3821 p_track->b_selected = true;
3826 * DemuxFrg: read packet and send them to decoders
3827 * \return 1 on success, 0 on error.
3828 * TODO check for newly selected track
3830 int DemuxFrg( demux_t *p_demux )
3832 demux_sys_t *p_sys = p_demux->p_sys;
3834 unsigned i_track_selected;
3836 /* check for newly selected/unselected track */
3837 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks; i_track++ )
3839 mp4_track_t *tk = &p_sys->track[i_track];
3842 if( !tk->b_ok || tk->b_chapter )
3845 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
3846 msg_Dbg( p_demux, "track %u %s!", tk->i_track_ID, b ? "enabled" : "disabled" );
3848 if( tk->b_selected && !b )
3850 MP4_TrackUnselect( p_demux, tk );
3852 else if( !tk->b_selected && b)
3854 MP4_frg_TrackSelect( p_demux, tk );
3857 if( tk->b_selected )
3861 if( i_track_selected <= 0 )
3863 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
3864 if( p_sys->i_timescale > 0 )
3866 int64_t i_length = CLOCK_FREQ *
3867 (mtime_t)p_sys->i_overall_duration /
3868 (mtime_t)p_sys->i_timescale;
3869 if( MP4_GetMoviePTS( p_sys ) >= i_length )
3874 msg_Warn( p_demux, "no track selected, exiting..." );
3878 /* first wait for the good time to read a packet */
3879 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
3881 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
3883 /* we will read 100ms for each stream so ...*/
3884 p_sys->i_time += __MAX( p_sys->i_timescale / 10, 1 );
3886 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
3888 mp4_track_t *tk = &p_sys->track[i_track];
3890 if( !tk->b_ok || tk->b_chapter || !tk->b_selected )
3892 msg_Warn( p_demux, "Skipping track id %u", tk->i_track_ID );
3896 if( !tk->b_has_non_empty_cchunk )
3898 if( MP4_frg_GetChunks( p_demux, tk->i_track_ID ) != VLC_SUCCESS )
3900 msg_Info( p_demux, "MP4_frg_GetChunks returned error. End of stream?" );
3905 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
3910 mp4_chunk_t *ck = tk->cchunk;
3911 if( ck->i_sample >= ck->i_sample_count )
3913 msg_Err( p_demux, "sample %"PRIu32" of %"PRIu32"",
3914 ck->i_sample, ck->i_sample_count );
3918 uint32_t sample_size = ck->p_sample_size[ck->i_sample];
3919 p_block = block_Alloc( sample_size );
3920 uint8_t *src = ck->p_sample_data[ck->i_sample];
3921 memcpy( p_block->p_buffer, src, sample_size );
3924 if( ck->i_sample == ck->i_sample_count )
3925 tk->b_has_non_empty_cchunk = false;
3928 p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
3930 if( MP4_TrackGetPTSDelta( p_demux, tk, &i_delta ) )
3931 p_block->i_pts = p_block->i_dts + i_delta;
3932 else if( tk->fmt.i_cat != VIDEO_ES )
3933 p_block->i_pts = p_block->i_dts;
3935 p_block->i_pts = VLC_TS_INVALID;
3937 MP4_Block_Send( p_demux, tk, p_block );
3941 if( !tk->b_has_non_empty_cchunk )
3948 static MP4_Box_t * LoadNextChunk( demux_t *p_demux )
3950 /* Read Next Chunk */
3951 MP4_Box_t *p_chunk = MP4_BoxGetNextChunk( p_demux->s );
3954 msg_Warn( p_demux, "no next chunk" );
3958 if( !p_chunk->p_first )
3960 msg_Warn( p_demux, "no next chunk child" );
3967 static bool BoxExistsInRootTree( MP4_Box_t *p_root, uint32_t i_type, off_t i_pos )
3971 if ( p_root->i_pos == i_pos )
3973 assert( i_type == p_root->i_type );
3976 p_root = p_root->p_next;
3978 return (p_root != NULL);
3981 static mtime_t SumFragmentsDurations( demux_t *p_demux )
3983 demux_sys_t *p_sys = p_demux->p_sys;
3984 mtime_t i_max_duration = 0;
3986 for ( unsigned int i=0; i<p_sys->i_tracks; i++ )
3988 mtime_t i_duration = 0;
3989 const mp4_fragment_t *p_fragment = &p_sys->moovfragment;
3990 while ( p_fragment && p_fragment->p_durations )
3992 i_duration += GetTrackDurationInFragment( p_fragment,
3993 p_sys->track[i].i_track_ID );
3994 p_fragment = p_fragment->p_next;
3996 i_max_duration = __MAX( i_duration, i_max_duration );
3999 return i_max_duration;
4002 /* Keeps an ordered chain of all fragments */
4003 static bool AddFragment( demux_t *p_demux, MP4_Box_t *p_moox )
4005 demux_sys_t *p_sys = p_demux->p_sys;
4006 mp4_fragment_t *p_base_fragment = & p_sys->moovfragment;
4010 if( p_moox->i_type == ATOM_moov )
4012 if ( !p_sys->moovfragment.p_moox )
4014 p_sys->moovfragment.p_moox = p_moox;
4016 if( (p_mvhd = MP4_BoxGet( p_moox, "mvhd" )) )
4018 p_sys->i_timescale = BOXDATA(p_mvhd)->i_timescale;
4019 p_sys->i_overall_duration = BOXDATA(p_mvhd)->i_duration;
4022 if ( MP4_BoxCount( p_moox, "mvex" ) || !p_mvhd )
4023 { /* duration might be wrong an be set to whole duration :/ */
4025 MP4_Box_t *p_trak = MP4_BoxGet( p_moox, "trak" );
4026 unsigned int i_trakcount = MP4_BoxCount( p_moox, "trak" );
4027 p_sys->moovfragment.p_durations = calloc( i_trakcount, sizeof(*p_sys->moovfragment.p_durations) );
4028 if ( i_trakcount && !p_sys->moovfragment.p_durations )
4030 p_sys->moovfragment.i_durations = i_trakcount;
4034 if ( p_trak->i_type == ATOM_trak && (p_tkhd = MP4_BoxGet( p_trak, "tkhd" )) )
4036 p_sys->moovfragment.p_durations[i_trakcount].i_duration = BOXDATA(p_tkhd)->i_duration;
4037 p_sys->moovfragment.p_durations[i_trakcount++].i_track_ID = BOXDATA(p_tkhd)->i_track_ID;
4039 p_trak = p_trak->p_next;
4043 msg_Dbg( p_demux, "added fragment %4.4s", (char*) &p_moox->i_type );
4048 else // p_moox->i_type == ATOM_moof
4050 assert(p_moox->i_type == ATOM_moof);
4051 mp4_fragment_t *p_fragment = p_sys->moovfragment.p_next;
4052 while ( p_fragment )
4054 if ( !p_base_fragment->p_moox || p_moox->i_pos > p_base_fragment->p_moox->i_pos )
4056 p_base_fragment = p_fragment;
4057 p_fragment = p_fragment->p_next;
4059 else if ( p_moox->i_pos == p_base_fragment->p_moox->i_pos )
4061 /* already exists */
4067 /* Add the moof fragment */
4068 mp4_fragment_t *p_new = malloc(sizeof(mp4_fragment_t));
4069 if ( !p_new ) return false;
4070 p_new->p_moox = p_moox;
4071 p_new->i_durations = MP4_BoxCount( p_new->p_moox, "traf" );
4072 p_new->p_durations = calloc( p_new->i_durations, sizeof(*p_new->p_durations) );
4073 if ( p_new->i_durations && !p_new->p_durations )
4078 p_new->p_next = p_base_fragment->p_next;
4079 p_base_fragment->p_next = p_new;
4080 msg_Dbg( p_demux, "added fragment %4.4s", (char*) &p_moox->i_type );
4082 /* we have to probe all fragments :/ */
4083 uint64_t i_traf_base_data_offset = 0;
4084 uint64_t i_traf_min_offset = 0;
4085 uint32_t i_traf = 0;
4086 uint32_t i_traf_total_size = 0;
4087 uint32_t i_trafs_total_size = 0;
4089 MP4_Box_t *p_traf = MP4_BoxGet( p_new->p_moox, "traf" );
4090 unsigned int i_durationindex = 0;
4093 if ( p_traf->i_type != ATOM_traf )
4095 p_traf = p_traf->p_next;
4098 const MP4_Box_t *p_tfhd = MP4_BoxGet( p_traf, "tfhd" );
4099 const MP4_Box_t *p_trun = MP4_BoxGet( p_traf, "trun" );
4100 if ( !p_tfhd || !p_trun )
4102 p_traf = p_traf->p_next;
4106 uint32_t i_track_timescale = 0;
4107 uint32_t i_track_defaultsamplesize = 0;
4108 uint32_t i_track_defaultsampleduration = 0;
4109 if ( p_sys->b_smooth )
4111 /* stra sets identical timescales */
4112 i_track_timescale = p_sys->i_timescale;
4113 i_track_defaultsamplesize = 1;
4114 i_track_defaultsampleduration = 1;
4118 /* set trex for defaults */
4119 MP4_Box_t *p_trex = MP4_GetTrexByTrackID( p_sys->moovfragment.p_moox, BOXDATA(p_tfhd)->i_track_ID );
4122 i_track_defaultsamplesize = BOXDATA(p_trex)->i_default_sample_size;
4123 i_track_defaultsampleduration = BOXDATA(p_trex)->i_default_sample_duration;
4126 MP4_Box_t *p_trak = MP4_GetTrakByTrackID( p_sys->moovfragment.p_moox, BOXDATA(p_tfhd)->i_track_ID );
4129 MP4_Box_t *p_mdhd = MP4_BoxGet( p_trak, "mdia/mdhd" );
4130 if ( p_mdhd ) i_track_timescale = BOXDATA(p_mdhd)->i_timescale;
4134 if ( !i_track_timescale )
4136 p_traf = p_traf->p_next;
4140 if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_BASE_DATA_OFFSET )
4142 i_traf_base_data_offset = BOXDATA(p_tfhd)->i_base_data_offset;
4144 else if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DEFAULT_BASE_IS_MOOF )
4146 i_traf_base_data_offset = p_new->p_moox->i_pos /* + 8*/;
4151 i_traf_base_data_offset = p_new->p_moox->i_pos /*+ 8*/;
4153 i_traf_base_data_offset += i_traf_total_size;
4156 i_traf_total_size = 0;
4158 uint64_t i_trun_data_offset = i_traf_base_data_offset;
4159 uint64_t i_traf_duration = 0;
4160 uint32_t i_trun_size = 0;
4161 while ( p_trun && p_tfhd )
4163 if ( p_trun->i_type != ATOM_trun )
4165 p_trun = p_trun->p_next;
4168 const MP4_Box_data_trun_t *p_trundata = p_trun->data.p_trun;
4170 /* Get data offset */
4171 if ( p_trundata->i_flags & MP4_TRUN_DATA_OFFSET )
4172 i_trun_data_offset += __MAX( p_trundata->i_data_offset, 0 );
4174 i_trun_data_offset += i_trun_size;
4178 /* Sum total time */
4179 if ( p_trundata->i_flags & MP4_TRUN_SAMPLE_DURATION )
4181 for( uint32_t i=0; i< p_trundata->i_sample_count; i++ )
4182 i_traf_duration += p_trundata->p_samples[i].i_duration;
4184 else if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DFLT_SAMPLE_DURATION )
4186 i_traf_duration += p_trundata->i_sample_count *
4187 BOXDATA(p_tfhd)->i_default_sample_duration;
4191 i_traf_duration += p_trundata->i_sample_count *
4192 i_track_defaultsampleduration;
4195 /* Get total traf size */
4196 if ( p_trundata->i_flags & MP4_TRUN_SAMPLE_SIZE )
4198 for( uint32_t i=0; i< p_trundata->i_sample_count; i++ )
4199 i_trun_size += p_trundata->p_samples[i].i_size;
4201 else if ( BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DFLT_SAMPLE_SIZE )
4203 i_trun_size += p_trundata->i_sample_count *
4204 BOXDATA(p_tfhd)->i_default_sample_size;
4208 i_trun_size += p_trundata->i_sample_count *
4209 i_track_defaultsamplesize;
4212 i_traf_total_size += i_trun_size;
4214 if ( i_traf_min_offset )
4215 i_traf_min_offset = __MIN( i_trun_data_offset, i_traf_min_offset );
4217 i_traf_min_offset = i_trun_data_offset;
4219 p_trun = p_trun->p_next;
4222 i_trafs_total_size += i_traf_total_size;
4224 p_new->p_durations[i_durationindex].i_track_ID = BOXDATA(p_tfhd)->i_track_ID;
4225 p_new->p_durations[i_durationindex++].i_duration = i_traf_duration * p_sys->i_timescale / i_track_timescale;
4227 p_traf = p_traf->p_next;
4231 p_new->i_chunk_range_min_offset = i_traf_min_offset;
4232 p_new->i_chunk_range_max_offset = i_traf_min_offset + i_trafs_total_size;
4234 msg_Dbg( p_demux, "new fragment is %"PRId64" %"PRId64, p_new->i_chunk_range_min_offset, p_new->i_chunk_range_max_offset );
4236 /* compute total duration with that new fragment if no overall provided */
4237 MP4_Box_t *p_mehd = MP4_BoxGet( p_sys->moovfragment.p_moox, "mvex/mehd");
4240 if ( p_sys->b_fragments_probed )
4241 p_sys->i_overall_duration = SumFragmentsDurations( p_demux );
4244 p_sys->i_overall_duration = BOXDATA(p_mehd)->i_fragment_duration;
4246 msg_Dbg( p_demux, "total fragments duration %"PRId64, CLOCK_FREQ * p_sys->i_overall_duration / p_sys->i_timescale );
4250 static int ProbeIndex( demux_t *p_demux )
4252 demux_sys_t *p_sys = p_demux->p_sys;
4253 uint64_t i_backup_pos, i_stream_size;
4254 uint8_t mfro[MP4_MFRO_BOXSIZE];
4255 assert( p_sys->b_seekable );
4257 if ( MP4_BoxCount( p_sys->p_root, "/mfra" ) )
4260 i_stream_size = stream_Size( p_demux->s );
4261 if ( ( i_stream_size >> 62 ) ||
4262 ( i_stream_size < MP4_MFRO_BOXSIZE ) ||
4263 ( !MP4_stream_Tell( p_demux->s, &i_backup_pos ) ) ||
4264 ( stream_Seek( p_demux->s, i_stream_size - MP4_MFRO_BOXSIZE ) != VLC_SUCCESS )
4267 msg_Dbg( p_demux, "Probing tail for mfro has failed" );
4268 return VLC_EGENERIC;
4271 if ( stream_Read( p_demux->s, &mfro, MP4_MFRO_BOXSIZE ) == MP4_MFRO_BOXSIZE &&
4272 VLC_FOURCC(mfro[4],mfro[5],mfro[6],mfro[7]) == ATOM_mfro &&
4273 GetDWBE( &mfro ) == MP4_MFRO_BOXSIZE )
4275 uint32_t i_offset = GetDWBE( &mfro[12] );
4276 msg_Dbg( p_demux, "will read mfra index at %"PRIu64, i_stream_size - i_offset );
4277 if ( i_stream_size > i_offset &&
4278 stream_Seek( p_demux->s, i_stream_size - i_offset ) == VLC_SUCCESS )
4280 msg_Dbg( p_demux, "reading mfra index at %"PRIu64, i_stream_size - i_offset );
4281 MP4_ReadBoxContainerChildren( p_demux->s, p_sys->p_root, ATOM_mfra );
4285 return stream_Seek( p_demux->s, i_backup_pos );
4288 static int ProbeFragments( demux_t *p_demux, bool b_force )
4290 demux_sys_t *p_sys = p_demux->p_sys;
4291 uint64_t i_current_pos;
4293 if ( MP4_stream_Tell( p_demux->s, &i_current_pos ) )
4294 msg_Dbg( p_demux, "probing fragments from %"PRId64, i_current_pos );
4296 assert( p_sys->p_root );
4298 if ( p_sys->b_fastseekable || b_force )
4300 MP4_ReadBoxContainerChildren( p_demux->s, p_sys->p_root, 0 ); /* Get the rest of the file */
4301 p_sys->b_fragments_probed = true;
4305 /* We stop at first moof, which validates our fragmentation condition
4306 * and we'll find others while reading. */
4307 MP4_ReadBoxContainerChildren( p_demux->s, p_sys->p_root, ATOM_moof );
4310 if ( !p_sys->moovfragment.p_moox )
4312 MP4_Box_t *p_moov = MP4_BoxGet( p_sys->p_root, "/moov" );
4315 /* moov/mvex before probing should be present anyway */
4316 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
4317 return VLC_EGENERIC;
4319 AddFragment( p_demux, p_moov );
4322 MP4_Box_t *p_moof = MP4_BoxGet( p_sys->p_root, "moof" );
4325 if ( p_moof->i_type == ATOM_moof )
4326 AddFragment( p_demux, p_moof );
4327 p_moof = p_moof->p_next;
4330 MP4_Box_t *p_mdat = MP4_BoxGet( p_sys->p_root, "mdat" );
4333 stream_Seek( p_demux->s, p_mdat->i_pos );
4334 msg_Dbg( p_demux, "rewinding to mdat %"PRId64, p_mdat->i_pos );
4340 static mp4_fragment_t * GetFragmentByPos( demux_t *p_demux, uint64_t i_pos, bool b_exact )
4342 mp4_fragment_t *p_fragment = &p_demux->p_sys->moovfragment;
4343 while ( p_fragment )
4345 if ( i_pos <= p_fragment->i_chunk_range_max_offset &&
4346 ( !b_exact || i_pos >= p_fragment->i_chunk_range_min_offset ) )
4348 msg_Dbg( p_demux, "fragment matched %"PRIu64" << %"PRIu64" << %"PRIu64,
4349 p_fragment->i_chunk_range_min_offset, i_pos,
4350 p_fragment->i_chunk_range_max_offset );
4355 p_fragment = p_fragment->p_next;
4361 /* Get a matching fragment data start by clock time */
4362 static mp4_fragment_t * GetFragmentByTime( demux_t *p_demux, const mtime_t i_time )
4364 demux_sys_t *p_sys = p_demux->p_sys;
4365 mp4_fragment_t *p_fragment = &p_sys->moovfragment;
4366 mtime_t i_base_time = 0;
4367 mtime_t *pi_tracks_duration_total = calloc( p_sys->i_tracks, sizeof(mtime_t) );
4368 while ( p_fragment && pi_tracks_duration_total )
4370 if ( p_fragment == &p_sys->moovfragment &&
4371 p_fragment->i_chunk_range_max_offset == 0 )
4373 p_fragment = p_fragment->p_next;
4377 mtime_t i_length = 0;
4378 for( unsigned int i=0; i<p_sys->i_tracks; i++ )
4380 mtime_t i_track_duration = GetTrackDurationInFragment( p_fragment,
4381 p_sys->track[i].i_track_ID );
4382 pi_tracks_duration_total[i] += i_track_duration;
4383 i_length = __MAX(i_length, i_track_duration);
4386 i_length = i_length * CLOCK_FREQ / p_demux->p_sys->i_timescale; /* movie scale to time */
4387 if ( i_time >= i_base_time &&
4388 i_time <= i_base_time + i_length )
4394 i_base_time += i_length;
4395 p_fragment = p_fragment->p_next;
4398 if ( !p_demux->p_sys->b_fragments_probed )
4399 break; /* We have no way to guess missing fragments time */
4401 free( pi_tracks_duration_total );
4405 /* Returns fragment scaled time offset */
4406 static mtime_t LeafGetTrackFragmentTimeOffset( demux_t *p_demux, mp4_fragment_t *p_fragment,
4407 unsigned int i_track_ID )
4409 mtime_t i_base_scaledtime = 0;
4410 mp4_fragment_t *p_current = &p_demux->p_sys->moovfragment;
4411 while ( p_current != p_fragment )
4413 if ( p_current != &p_demux->p_sys->moovfragment ||
4414 p_current->i_chunk_range_max_offset )
4416 i_base_scaledtime += GetTrackDurationInFragment( p_current, i_track_ID );
4418 p_current = p_current->p_next;
4420 return i_base_scaledtime;
4423 static int LeafParseTRUN( demux_t *p_demux, mp4_track_t *p_track,
4424 const uint32_t i_defaultduration, const uint32_t i_defaultsize,
4425 const MP4_Box_data_trun_t *p_trun, uint32_t * const pi_mdatlen )
4427 assert( p_trun->i_sample_count );
4428 msg_Dbg( p_demux, "Default sample duration %"PRIu32" size %"PRIu32" firstdts %"PRIu64,
4429 i_defaultduration, i_defaultsize, p_track->i_first_dts );
4431 uint32_t dur = 0, len;
4432 uint32_t chunk_size = 0;
4433 mtime_t i_nzdts = CLOCK_FREQ * p_track->i_time / p_track->i_timescale;
4437 for( uint32_t i = 0; i < p_trun->i_sample_count; i++)
4439 i_nzdts += CLOCK_FREQ * dur / p_track->i_timescale;
4442 if( p_trun->i_flags & MP4_TRUN_SAMPLE_DURATION )
4443 dur = p_trun->p_samples[i].i_duration;
4445 dur = i_defaultduration;
4447 p_track->i_time += dur;
4449 if( p_trun->i_flags & MP4_TRUN_SAMPLE_TIME_OFFSET )
4451 if ( p_trun->i_version == 0 )
4452 i_nzpts += CLOCK_FREQ * (int32_t) p_trun->p_samples[i].i_composition_time_offset / p_track->i_timescale;
4454 i_nzpts += CLOCK_FREQ * p_trun->p_samples[i].i_composition_time_offset / p_track->i_timescale;
4457 if( p_trun->i_flags & MP4_TRUN_SAMPLE_SIZE )
4458 len = p_trun->p_samples[i].i_size;
4460 len = i_defaultsize;
4462 assert( dur ); /* dur, dur ! */
4465 if ( chunk_size + len > *pi_mdatlen )
4467 /* update data left in mdat */
4468 *pi_mdatlen -= chunk_size;
4469 return VLC_EGENERIC;
4472 block_t *p_block = MP4_Block_Read( p_demux, p_track, __MIN( len, INT32_MAX ) );
4473 uint32_t i_read = ( p_block ) ? p_block->i_buffer : 0;
4476 /* update data left in mdat */
4477 *pi_mdatlen -= chunk_size;
4478 *pi_mdatlen -= i_read;
4480 return VLC_EGENERIC;
4483 if ( p_demux->p_sys->i_pcr < VLC_TS_0 )
4485 p_demux->p_sys->i_pcr = i_nzdts;
4486 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + i_nzdts );
4489 if ( p_track->p_es )
4491 p_block->i_dts = VLC_TS_0 + i_nzdts;
4492 p_block->i_pts = VLC_TS_0 + i_nzpts;
4493 p_block->i_length = CLOCK_FREQ * dur / p_track->i_timescale;
4494 MP4_Block_Send( p_demux, p_track, p_block );
4496 else free( p_block );
4501 /* update data left in mdat */
4502 *pi_mdatlen -= chunk_size;
4506 static int LeafGetTrackAndChunkByMOOVPos( demux_t *p_demux, uint64_t *pi_pos,
4507 mp4_track_t **pp_tk, unsigned int *pi_chunk )
4509 const demux_sys_t *p_sys = p_demux->p_sys;
4511 mp4_track_t *p_tk_closest = NULL;
4512 uint64_t i_closest = UINT64_MAX;
4513 unsigned int i_chunk_closest;
4517 for ( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
4519 for( unsigned int i_chunk = 0; i_chunk < p_sys->track[i_track].i_chunk_count; i_chunk++ )
4521 if ( p_sys->track[i_track].chunk[i_chunk].i_offset > *pi_pos )
4523 i_closest = __MIN( i_closest, p_sys->track[i_track].chunk[i_chunk].i_offset );
4524 p_tk_closest = &p_sys->track[i_track];
4525 i_chunk_closest = i_chunk;
4528 if ( *pi_pos == p_sys->track[i_track].chunk[i_chunk].i_offset )
4530 *pp_tk = &p_sys->track[i_track];
4531 *pi_chunk = i_chunk;
4537 if ( i_closest != UINT64_MAX )
4539 *pi_pos = i_closest;
4540 *pp_tk = p_tk_closest;
4541 *pi_chunk = i_chunk_closest;
4544 else return VLC_EGENERIC;
4547 static int LeafMOOVGetSamplesSize( const mp4_track_t *p_track, const uint32_t i_sample,
4548 uint32_t *pi_samplestoread, uint32_t *pi_samplessize,
4549 const uint32_t i_maxbytes, const uint32_t i_maxsamples )
4551 MP4_Box_t *p_stsz = MP4_BoxGet( p_track->p_stbl, "stsz" );
4553 return VLC_EGENERIC;
4555 if ( BOXDATA(p_stsz)->i_sample_size == 0 )
4557 uint32_t i_entry = i_sample;
4558 uint32_t i_totalbytes = 0;
4559 *pi_samplestoread = 1;
4561 if ( i_sample >= BOXDATA(p_stsz)->i_sample_count )
4562 return VLC_EGENERIC;
4564 *pi_samplessize = BOXDATA(p_stsz)->i_entry_size[i_sample];
4565 i_totalbytes += *pi_samplessize;
4567 if ( *pi_samplessize > i_maxbytes )
4568 return VLC_EGENERIC;
4571 while( i_entry < BOXDATA(p_stsz)->i_sample_count &&
4572 *pi_samplessize == BOXDATA(p_stsz)->i_entry_size[i_entry] &&
4573 i_totalbytes + *pi_samplessize < i_maxbytes &&
4574 *pi_samplestoread < i_maxsamples
4577 i_totalbytes += *pi_samplessize;
4578 (*pi_samplestoread)++;
4581 *pi_samplessize = i_totalbytes;
4585 /* all samples have same size */
4586 *pi_samplessize = BOXDATA(p_stsz)->i_sample_size;
4587 *pi_samplestoread = __MIN( i_maxsamples, BOXDATA(p_stsz)->i_sample_count );
4588 *pi_samplestoread = __MIN( i_maxbytes / *pi_samplessize, *pi_samplestoread );
4589 *pi_samplessize = *pi_samplessize * *pi_samplestoread;
4595 static inline mtime_t LeafGetMOOVTimeInChunk( const mp4_chunk_t *p_chunk, uint32_t i_sample )
4598 uint32_t i_index = 0;
4600 while( i_sample > 0 )
4602 if( i_sample > p_chunk->p_sample_count_dts[i_index] )
4604 i_time += p_chunk->p_sample_count_dts[i_index] *
4605 p_chunk->p_sample_delta_dts[i_index];
4606 i_sample -= p_chunk->p_sample_count_dts[i_index];
4611 i_time += i_sample * p_chunk->p_sample_delta_dts[i_index];
4619 static int LeafParseMDATwithMOOV( demux_t *p_demux )
4621 demux_sys_t *p_sys = p_demux->p_sys;
4623 assert( p_sys->context.i_current_box_type == ATOM_mdat );
4624 assert( p_sys->context.p_fragment->p_moox->i_type == ATOM_moov );
4626 uint64_t i_current_pos;
4627 if ( !MP4_stream_Tell( p_demux->s, &i_current_pos ) )
4628 return VLC_EGENERIC;
4630 if ( p_sys->context.i_mdatbytesleft == 0 ) /* Start parsing new mdat */
4632 /* Ready mdat section */
4634 int i_read = stream_Read( p_demux->s, &mdat, 8 );
4635 p_sys->context.i_mdatbytesleft = GetDWBE( mdat );
4636 if ( i_read < 8 || p_sys->context.i_mdatbytesleft < 8 ||
4637 VLC_FOURCC( mdat[4], mdat[5], mdat[6], mdat[7] ) != ATOM_mdat )
4640 if ( !MP4_stream_Tell( p_demux->s, &i_pos ) )
4641 msg_Err( p_demux, "No mdat atom at %"PRIu64, i_pos - __MAX( 0, i_read ) );
4642 return VLC_EGENERIC;
4645 p_sys->context.i_mdatbytesleft -= 8;
4648 while( p_sys->context.i_mdatbytesleft > 0 )
4650 mp4_track_t *p_track;
4651 unsigned int i_chunk;
4654 uint64_t i_pos = i_current_pos;
4655 int i_ret = LeafGetTrackAndChunkByMOOVPos( p_demux, &i_pos, &p_track, &i_chunk );
4656 if ( i_ret == VLC_EGENERIC )
4658 msg_Err(p_demux, "can't find referenced chunk for start at %"PRIu64, i_current_pos );
4661 else if( i_ret == VLC_ENOOBJ )
4663 assert( i_pos - i_current_pos > p_sys->context.i_mdatbytesleft );
4664 int i_read = stream_Read( p_demux->s, NULL, i_pos - i_current_pos );
4665 i_current_pos += i_read;
4666 p_sys->context.i_mdatbytesleft -= i_read;
4667 if ( i_read == 0 ) goto error;
4672 mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
4674 uint32_t i_nb_samples_at_chunk_start = p_chunk->i_sample_first;
4675 uint32_t i_nb_samples_in_chunk = p_chunk->i_sample_count;
4677 assert(i_nb_samples_in_chunk);
4679 uint32_t i_nb_samples = 0;
4680 while ( i_nb_samples < i_nb_samples_in_chunk )
4682 uint32_t i_samplessize = 0;
4683 uint32_t i_samplescounttoread = 0;
4684 i_ret = LeafMOOVGetSamplesSize( p_track,
4685 i_nb_samples_at_chunk_start + i_nb_samples,
4686 &i_samplescounttoread, &i_samplessize,
4687 p_sys->context.i_mdatbytesleft,
4688 /*i_nb_samples_in_chunk - i_nb_samples*/ 1 );
4689 if ( i_ret != VLC_SUCCESS )
4692 if( p_sys->context.i_mdatbytesleft &&
4693 p_sys->context.i_mdatbytesleft >= i_samplessize )
4699 if( !(p_block = MP4_Block_Read( p_demux, p_track, i_samplessize )) )
4702 if ( MP4_stream_Tell( p_demux->s, &i_pos ) )
4704 p_sys->context.i_mdatbytesleft -= ( i_pos - i_current_pos );
4705 msg_Err( p_demux, "stream block error %"PRId64" %"PRId64, i_pos, i_pos - i_current_pos );
4710 i_nb_samples += i_samplescounttoread;
4711 i_current_pos += i_samplessize;
4712 p_sys->context.i_mdatbytesleft -= i_samplessize;
4715 mtime_t i_time = LeafGetMOOVTimeInChunk( p_chunk, i_nb_samples );
4716 i_time += p_chunk->i_first_dts;
4717 p_track->i_time = i_time;
4718 p_block->i_dts = VLC_TS_0 + CLOCK_FREQ * i_time / p_track->i_timescale;
4722 if( MP4_TrackGetPTSDelta( p_demux, p_track, &i_delta ) )
4723 p_block->i_pts = p_block->i_dts + i_delta;
4724 else if( p_track->fmt.i_cat != VIDEO_ES )
4725 p_block->i_pts = p_block->i_dts;
4727 p_block->i_pts = VLC_TS_INVALID;
4729 MP4_Block_Send( p_demux, p_track, p_block );
4731 if ( p_demux->p_sys->i_pcr < VLC_TS_0 )
4733 p_sys->i_time = p_track->i_time * p_sys->i_timescale / p_track->i_timescale;
4734 p_demux->p_sys->i_pcr = MP4_GetMoviePTS( p_demux->p_sys );
4735 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_demux->p_sys->i_pcr );
4741 // sample size > left bytes
4745 p_track->i_sample += i_samplescounttoread;
4748 /* flag end of mdat section if needed */
4749 if ( p_sys->context.i_mdatbytesleft == 0 )
4750 p_sys->context.i_current_box_type = 0;
4757 /* Skip if we didn't reach the end of mdat box */
4758 if ( p_sys->context.i_mdatbytesleft > 0 )
4760 msg_Err( p_demux, "mdat had still %"PRIu32" bytes unparsed as samples",
4761 p_sys->context.i_mdatbytesleft );
4762 stream_ReadU32( p_demux->s, NULL, p_sys->context.i_mdatbytesleft );
4764 p_sys->context.i_current_box_type = 0;
4769 static mp4_track_t * LeafGetTrackByTrunPos( demux_t *p_demux, const uint64_t i_pos, const uint64_t i_moofpos )
4771 demux_sys_t *p_sys = p_demux->p_sys;
4773 for ( uint32_t i=0; i<p_sys->i_tracks; i++ )
4775 mp4_track_t *p_track = &p_sys->track[i];
4776 if ( !p_track->context.p_trun || !p_track->context.p_tfhd )
4778 const MP4_Box_data_trun_t *p_trun_data = p_track->context.BOXDATA(p_trun);
4779 uint64_t i_offset = 0;
4781 if ( p_track->context.BOXDATA(p_tfhd)->i_flags & MP4_TFHD_BASE_DATA_OFFSET )
4782 i_offset = p_track->context.BOXDATA(p_tfhd)->i_base_data_offset;
4784 i_offset = i_moofpos;
4786 //if ( p_track->context.BOXDATA(p_tfhd)->i_flags & MP4_TFHD_DEFAULT_BASE_IS_MOOF )
4787 // i_offset += i_moofpos;
4789 if (p_trun_data->i_flags & MP4_TRUN_DATA_OFFSET)
4790 i_offset += p_trun_data->i_data_offset;
4794 if ( i_offset == i_pos )
4801 static int LeafMapTrafTrunContextes( demux_t *p_demux, MP4_Box_t *p_moof )
4803 demux_sys_t *p_sys = p_demux->p_sys;
4806 for ( uint32_t i=0; i<p_sys->i_tracks; i++ )
4808 mp4_track_t *p_track = &p_sys->track[i];
4809 p_track->context.p_tfhd = NULL;
4810 p_track->context.p_traf = NULL;
4811 p_track->context.p_trun = NULL;
4814 if ( p_moof->i_type == ATOM_moov )
4817 MP4_Box_t *p_traf = MP4_BoxGet( p_moof, "traf" );
4820 msg_Warn( p_demux, "no traf box found!" );
4821 return VLC_EGENERIC;
4827 if ( p_traf->i_type == ATOM_traf )
4829 MP4_Box_t *p_tfhd = MP4_BoxGet( p_traf, "tfhd" );
4830 for ( uint32_t i=0; p_tfhd && i<p_sys->i_tracks; i++ )
4832 mp4_track_t *p_track = &p_sys->track[i];
4833 if ( BOXDATA(p_tfhd)->i_track_ID == p_track->i_track_ID )
4835 MP4_Box_t *p_trun = MP4_BoxGet( p_traf, "trun" );
4838 p_track->context.p_tfhd = p_tfhd;
4839 p_track->context.p_traf = p_traf;
4840 p_track->context.p_trun = p_trun;
4842 p_tfhd = NULL; /* break loop */
4846 p_traf = p_traf->p_next;
4852 static int LeafIndexGetMoofPosByTime( demux_t *p_demux, const mtime_t i_target_time,
4853 uint64_t *pi_pos, mtime_t *pi_mooftime )
4855 MP4_Box_t *p_tfra = MP4_BoxGet( p_demux->p_sys->p_root, "mfra/tfra" );
4858 if ( p_tfra->i_type == ATOM_tfra )
4861 const MP4_Box_data_tfra_t *p_data = BOXDATA(p_tfra);
4862 mp4_track_t *p_track = MP4_frg_GetTrackByID( p_demux, p_data->i_track_ID );
4863 if ( p_track && (p_track->fmt.i_cat == AUDIO_ES || p_track->fmt.i_cat == VIDEO_ES) )
4865 for ( uint32_t i = 0; i<p_data->i_number_of_entries; i += ( p_data->i_version == 1 ) ? 2 : 1 )
4869 if ( p_data->i_version == 1 )
4871 i_time = *((uint64_t *)(p_data->p_time + i));
4872 i_offset = *((uint64_t *)(p_data->p_moof_offset + i));
4876 i_time = p_data->p_time[i];
4877 i_offset = p_data->p_moof_offset[i];
4880 if ( CLOCK_FREQ * i_time / p_track->i_timescale >= i_target_time )
4882 if ( i_pos == -1 ) /* Not in this traf */
4885 *pi_pos = (uint64_t) i_pos;
4886 *pi_mooftime = CLOCK_FREQ * i_time / p_track->i_timescale;
4887 if ( p_track->fmt.i_cat == AUDIO_ES )
4888 *pi_mooftime -= CLOCK_FREQ / p_track->fmt.audio.i_rate * p_data->p_sample_number[i];
4890 *pi_mooftime -= CLOCK_FREQ / p_demux->p_sys->f_fps * p_data->p_sample_number[i];
4898 p_tfra = p_tfra->p_next;
4900 return VLC_EGENERIC;
4903 static int LeafParseMDATwithMOOF( demux_t *p_demux, MP4_Box_t *p_moof )
4905 demux_sys_t *p_sys = p_demux->p_sys;
4907 assert( p_moof->i_type == ATOM_moof );
4908 assert( p_sys->context.i_current_box_type == ATOM_mdat );
4910 if ( p_sys->context.i_mdatbytesleft == 0 )
4912 int i_ret = LeafMapTrafTrunContextes( p_demux, p_moof );
4913 if ( i_ret != VLC_SUCCESS )
4916 /* Ready mdat section */
4918 int i_read = stream_Read( p_demux->s, &mdat, 8 );
4919 p_sys->context.i_mdatbytesleft = GetDWBE( mdat );
4920 if ( i_read < 8 || p_sys->context.i_mdatbytesleft < 8 ||
4921 VLC_FOURCC( mdat[4], mdat[5], mdat[6], mdat[7] ) != ATOM_mdat )
4923 if ( MP4_stream_Tell( p_demux->s, &i_pos ) )
4924 msg_Err(p_demux, "No mdat atom at %"PRIu64, i_pos - i_read );
4925 return VLC_EGENERIC;
4927 p_sys->context.i_mdatbytesleft -= 8;
4930 if ( !MP4_stream_Tell( p_demux->s, &i_pos ) )
4931 return VLC_EGENERIC;
4932 if ( p_sys->b_smooth )
4933 i_pos -= p_moof->i_pos;
4934 mp4_track_t *p_track = LeafGetTrackByTrunPos( p_demux, i_pos, p_moof->i_pos );
4937 MP4_Box_data_tfhd_t *p_tfhd_data = p_track->context.BOXDATA(p_tfhd);
4938 uint32_t i_trun_sample_default_duration = 0;
4939 uint32_t i_trun_sample_default_size = 0;
4941 if ( p_track->context.p_trun )
4943 /* Get defaults for this/these RUN */
4944 if( p_tfhd_data->i_flags & MP4_TFHD_DFLT_SAMPLE_DURATION )
4945 i_trun_sample_default_duration = p_tfhd_data->i_default_sample_duration;
4947 if( p_tfhd_data->i_flags & MP4_TFHD_DFLT_SAMPLE_SIZE )
4948 i_trun_sample_default_size = p_tfhd_data->i_default_sample_size;
4950 if( !i_trun_sample_default_duration || !i_trun_sample_default_size )
4952 MP4_Box_t *p_trex = MP4_BoxGet( p_demux->p_sys->p_root, "moov/mvex/trex");
4955 while( p_trex && BOXDATA(p_trex)->i_track_ID != p_tfhd_data->i_track_ID )
4956 p_trex = p_trex->p_next;
4957 if ( p_trex && !i_trun_sample_default_duration )
4958 i_trun_sample_default_duration = BOXDATA(p_trex)->i_default_sample_duration;
4959 if ( p_trex && !i_trun_sample_default_size )
4960 i_trun_sample_default_size = BOXDATA(p_trex)->i_default_sample_size;
4964 const MP4_Box_data_trun_t *p_trun_data = p_track->context.BOXDATA(p_trun);
4966 /* NOW PARSE TRUN WITH MDAT */
4967 int i_ret = LeafParseTRUN( p_demux, p_track,
4968 i_trun_sample_default_duration, i_trun_sample_default_size,
4969 p_trun_data, & p_sys->context.i_mdatbytesleft );
4970 if ( i_ret != VLC_SUCCESS )
4973 p_track->context.p_trun = p_track->context.p_trun->p_next;
4976 if ( p_sys->context.i_mdatbytesleft == 0 )
4977 p_sys->context.i_current_box_type = 0;
4982 /* Skip if we didn't reach the end of mdat box */
4983 if ( p_sys->context.i_mdatbytesleft > 0 )
4985 msg_Warn( p_demux, "mdat had still %"PRIu32" bytes unparsed as samples", p_sys->context.i_mdatbytesleft - 8 );
4986 stream_ReadU32( p_demux->s, NULL, p_sys->context.i_mdatbytesleft );
4989 p_sys->context.i_current_box_type = 0;
4994 static int DemuxAsLeaf( demux_t *p_demux )
4996 demux_sys_t *p_sys = p_demux->p_sys;
4997 unsigned i_track_selected = 0;
4999 /* check for newly selected/unselected track */
5000 for( unsigned i_track = 0; i_track < p_sys->i_tracks; i_track++ )
5002 mp4_track_t *tk = &p_sys->track[i_track];
5005 if( !tk->b_ok || tk->b_chapter )
5008 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
5009 msg_Dbg( p_demux, "track %u %s!", tk->i_track_ID, b ? "enabled" : "disabled" );
5011 if( tk->b_selected && !b )
5012 MP4_TrackUnselect( p_demux, tk );
5013 else if( !tk->b_selected && b)
5014 MP4_frg_TrackSelect( p_demux, tk );
5016 if( tk->b_selected )
5020 if( i_track_selected <= 0 )
5022 msg_Warn( p_demux, "no track selected, exiting..." );
5026 if ( p_sys->context.i_current_box_type != ATOM_mdat )
5028 /* Othewise mdat is skipped. FIXME: mdat reading ! */
5029 const uint8_t *p_peek;
5030 int i_read = stream_Peek( p_demux->s, &p_peek, 8 );
5034 p_sys->context.i_current_box_type = VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] );
5036 if ( p_sys->context.i_current_box_type != ATOM_mdat )
5038 if ( ! BoxExistsInRootTree( p_sys->p_root, p_sys->context.i_current_box_type, stream_Tell( p_demux->s ) ) )
5039 {// only if !b_probed ??
5040 MP4_Box_t *p_vroot = LoadNextChunk( p_demux );
5041 switch( p_sys->context.i_current_box_type )
5045 /* create fragment */
5046 AddFragment( p_demux, p_vroot->p_first );
5052 /* Append to root */
5053 p_sys->p_root->p_last->p_next = p_vroot->p_first;
5054 p_sys->p_root->p_last = p_vroot->p_first;
5055 p_vroot->p_last = NULL;
5056 p_vroot->p_next = NULL;
5057 p_vroot->p_first = NULL;
5058 MP4_BoxFree( p_demux->s, p_vroot );
5063 msg_Err( p_demux, "skipping known chunk type %4.4s size %"PRIu32, (char*)& p_sys->context.i_current_box_type, GetDWBE( p_peek ) );
5064 stream_Read( p_demux->s, NULL, GetDWBE( p_peek ) );
5069 /* skip mdat header */
5070 p_sys->context.p_fragment = GetFragmentByPos( p_demux,
5071 stream_Tell( p_demux->s ) + 8, true );
5076 if ( p_sys->context.i_current_box_type == ATOM_mdat )
5078 assert(p_sys->context.p_fragment);
5079 if ( p_sys->context.p_fragment )
5080 switch( p_sys->context.p_fragment->p_moox->i_type )
5082 case ATOM_moov://[ftyp/moov, mdat]+ -> [moof, mdat]+
5083 LeafParseMDATwithMOOV( p_demux );
5086 LeafParseMDATwithMOOF( p_demux, p_sys->context.p_fragment->p_moox ); // BACKUP CHUNK!
5089 msg_Err( p_demux, "fragment type %4.4s", (char*) &p_sys->context.p_fragment->p_moox->i_type );
5094 /* Get current time */
5095 mtime_t i_lowest_dts = VLC_TS_INVALID;
5096 mtime_t i_lowest_time = INT64_MAX;
5097 for( unsigned int i_track = 0; i_track < p_sys->i_tracks; i_track++ )
5099 const mp4_track_t *p_track = &p_sys->track[i_track];
5100 if( !p_track->b_selected || ( p_track->fmt.i_cat != VIDEO_ES && p_track->fmt.i_cat != AUDIO_ES ) )
5103 i_lowest_time = __MIN( i_lowest_time, p_track->i_time * p_sys->i_timescale / p_track->i_timescale );
5105 if ( i_lowest_dts == VLC_TS_INVALID )
5106 i_lowest_dts = CLOCK_FREQ * p_track->i_time / p_track->i_timescale;
5108 i_lowest_dts = __MIN( i_lowest_dts, CLOCK_FREQ * p_track->i_time / p_track->i_timescale );
5111 p_sys->i_time = i_lowest_time;
5112 p_sys->i_pcr = i_lowest_dts;
5113 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
5119 inline static mp4_track_t *MP4ASF_GetTrack( asf_packet_sys_t *p_packetsys,
5120 uint8_t i_stream_number )
5122 demux_sys_t *p_sys = p_packetsys->p_demux->p_sys;
5123 for ( unsigned int i=0; i<p_sys->i_tracks; i++ )
5125 if ( p_sys->track[i].p_asf &&
5126 i_stream_number == p_sys->track[i].BOXDATA(p_asf)->i_stream_number )
5128 return &p_sys->track[i];
5134 static asf_track_info_t * MP4ASF_GetTrackInfo( asf_packet_sys_t *p_packetsys,
5135 uint8_t i_stream_number )
5137 mp4_track_t *p_track = MP4ASF_GetTrack( p_packetsys, i_stream_number );
5139 return &p_track->asfinfo;
5144 static void MP4ASF_Send( asf_packet_sys_t *p_packetsys, uint8_t i_stream_number,
5145 block_t **pp_frame )
5147 mp4_track_t *p_track = MP4ASF_GetTrack( p_packetsys, i_stream_number );
5150 block_Release( *pp_frame );
5154 block_t *p_gather = block_ChainGather( *pp_frame );
5155 p_gather->i_dts = p_track->i_dts_backup;
5156 p_gather->i_pts = p_track->i_pts_backup;
5157 es_out_Send( p_packetsys->p_demux->out, p_track->p_es, p_gather );
5163 static void MP4ASF_ResetFrames( demux_sys_t *p_sys )
5165 for ( unsigned int i=0; i<p_sys->i_tracks; i++ )
5167 mp4_track_t *p_track = &p_sys->track[i];
5168 if( p_track->asfinfo.p_frame )
5170 block_ChainRelease( p_track->asfinfo.p_frame );
5171 p_track->asfinfo.p_frame = NULL;