1 /*****************************************************************************
2 * mp4.c : MP4 file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004 the VideoLAN team
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 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 General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
34 #include <vlc_demux.h>
35 #include <vlc_playlist.h>
37 #include <vlc_charset.h>
45 #define uint64_t int64_t
48 /*****************************************************************************
50 *****************************************************************************/
51 static int Open ( vlc_object_t * );
52 static void Close( vlc_object_t * );
55 set_category( CAT_INPUT );
56 set_subcategory( SUBCAT_INPUT_DEMUX );
57 set_description( _("MP4 stream demuxer") );
58 set_capability( "demux2", 242 );
59 set_callbacks( Open, Close );
62 /*****************************************************************************
64 *****************************************************************************/
65 static int Demux ( demux_t * );
66 static int DemuxRef( demux_t *p_demux ){ return 0;}
67 static int Seek ( demux_t *, mtime_t );
68 static int Control ( demux_t *, int, va_list );
70 /* Contain all information about a chunk */
73 uint64_t i_offset; /* absolute position of this chunk in the file */
74 uint32_t i_sample_description_index; /* index for SampleEntry to use */
75 uint32_t i_sample_count; /* how many samples in this chunk */
76 uint32_t i_sample_first; /* index of the first sample in this chunk */
78 /* now provide way to calculate pts, dts, and offset without to
79 much memory and with fast acces */
81 /* with this we can calculate dts/pts without waste memory */
83 uint32_t *p_sample_count_dts;
84 uint32_t *p_sample_delta_dts; /* dts delta */
86 uint32_t *p_sample_count_pts;
87 int32_t *p_sample_offset_pts; /* pts-dts */
89 /* TODO if needed add pts
90 but quickly *add* support for edts and seeking */
94 /* Contain all needed information for read all track with vlc */
97 unsigned int i_track_ID;/* this should be unique */
99 int b_ok; /* The track is usable */
100 int b_enable; /* is the trak enable by default */
101 vlc_bool_t b_selected; /* is the trak being played */
102 vlc_bool_t b_chapter; /* True when used for chapter only */
107 /* display size only ! */
111 /* more internal data */
112 uint64_t i_timescale; /* time scale for this track only */
115 int i_elst; /* current elst */
116 int64_t i_elst_time; /* current elst start time (in movie time scale)*/
117 MP4_Box_t *p_elst; /* elst (could be NULL) */
119 /* give the next sample to read, i_chunk is to find quickly where
120 the sample is located */
121 uint32_t i_sample; /* next sample to read */
122 uint32_t i_chunk; /* chunk where next sample is stored */
123 /* total count of chunk and sample */
124 uint32_t i_chunk_count;
125 uint32_t i_sample_count;
127 mp4_chunk_t *chunk; /* always defined for each chunk */
129 /* sample size, p_sample_size defined only if i_sample_size == 0
130 else i_sample_size is size for all sample */
131 uint32_t i_sample_size;
132 uint32_t *p_sample_size; /* XXX perhaps add file offset if take
133 too much time to do sumations each time*/
135 MP4_Box_t *p_stbl; /* will contain all timing information */
136 MP4_Box_t *p_stsd; /* will contain all data to initialize decoder */
137 MP4_Box_t *p_sample;/* point on actual sdsd */
147 MP4_Box_t *p_root; /* container for the whole file */
151 uint64_t i_time; /* time position of the presentation
152 * in movie timescale */
153 uint64_t i_timescale; /* movie time scale */
154 uint64_t i_duration; /* movie duration */
155 unsigned int i_tracks; /* number of tracks */
156 mp4_track_t *track; /* array of track */
159 MP4_Box_t *p_tref_chap;
162 input_title_t *p_title;
165 /*****************************************************************************
166 * Declaration of local function
167 *****************************************************************************/
168 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *);
169 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
171 static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
172 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
174 static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
176 static uint64_t MP4_TrackGetPos ( mp4_track_t * );
177 static int MP4_TrackSampleSize( mp4_track_t * );
178 static int MP4_TrackNextSample( demux_t *, mp4_track_t * );
179 static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
181 static void MP4_UpdateSeekpoint( demux_t * );
183 /* Return time in s of a track */
184 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
186 #define chunk p_track->chunk[p_track->i_chunk]
188 unsigned int i_index = 0;
189 unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
190 int64_t i_dts = chunk.i_first_dts;
192 while( i_sample > 0 )
194 if( i_sample > chunk.p_sample_count_dts[i_index] )
196 i_dts += chunk.p_sample_count_dts[i_index] *
197 chunk.p_sample_delta_dts[i_index];
198 i_sample -= chunk.p_sample_count_dts[i_index];
203 i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
211 /* now handle elst */
212 if( p_track->p_elst )
214 demux_sys_t *p_sys = p_demux->p_sys;
215 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
217 /* convert to offset */
218 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
219 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
220 elst->i_media_time[p_track->i_elst] > 0 )
222 i_dts -= elst->i_media_time[p_track->i_elst];
225 /* add i_elst_time */
226 i_dts += p_track->i_elst_time * p_track->i_timescale /
229 if( i_dts < 0 ) i_dts = 0;
232 return I64C(1000000) * i_dts / p_track->i_timescale;
235 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
237 mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
238 unsigned int i_index = 0;
239 unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
241 if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
244 for( i_index = 0;; i_index++ )
246 if( i_sample < ck->p_sample_count_pts[i_index] )
247 return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
248 (int64_t)p_track->i_timescale;
250 i_sample -= ck->p_sample_count_pts[i_index];
254 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
256 return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
259 /* Function to lookup the currently playing item */
260 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
261 playlist_item_t **pp_item );
263 static void LoadChapter( demux_t *p_demux );
265 /*****************************************************************************
266 * Open: check file and initializes MP4 structures
267 *****************************************************************************/
268 static int Open( vlc_object_t * p_this )
270 demux_t *p_demux = (demux_t *)p_this;
273 const uint8_t *p_peek;
281 vlc_bool_t b_seekable;
283 /* A little test to see if it could be a mp4 */
284 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
286 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
297 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
304 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
307 msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
311 /*Set exported functions */
312 p_demux->pf_demux = Demux;
313 p_demux->pf_control = Control;
315 /* create our structure that will contains all data */
316 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
317 memset( p_sys, 0, sizeof( demux_sys_t ) );
319 /* Now load all boxes ( except raw data ) */
320 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
322 msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
326 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
328 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
330 switch( p_ftyp->data.p_ftyp->i_major_brand )
334 "ISO Media file (isom) version %d.",
335 p_ftyp->data.p_ftyp->i_minor_version );
339 "unrecognized major file specification (%4.4s).",
340 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
346 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
349 /* the file need to have one moov box */
350 if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
352 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
356 msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
359 /* we have a free box as a moov, rename it */
360 p_foov->i_type = FOURCC_moov;
363 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
365 playlist_t *p_playlist;
366 playlist_item_t *p_current, *p_item_in_category;
367 int i_count = MP4_BoxCount( p_rmra, "rmda" );
369 vlc_bool_t b_play = VLC_FALSE;
371 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
373 p_playlist = pl_Yield( p_demux );
376 b_play = FindItem( p_demux, p_playlist, &p_current );
377 p_item_in_category = playlist_ItemToNode( p_playlist, p_current, VLC_TRUE );
378 p_current->p_input->i_type = ITEM_TYPE_PLAYLIST;
380 for( i = 0; i < i_count; i++ )
382 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
386 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
390 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
392 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
393 psz_ref, (char*)&i_ref_type );
395 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
397 if( strstr( psz_ref, "qt5gateQT" ) )
399 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
402 if( !strncmp( psz_ref, "http://", 7 ) ||
403 !strncmp( psz_ref, "rtsp://", 7 ) )
410 char *psz_path = strdup( p_demux->psz_path );
411 char *end = strrchr( psz_path, '/' );
412 if( end ) end[1] = '\0';
413 else *psz_path = '\0';
415 asprintf( &psz_absolute, "%s://%s%s",
416 p_demux->psz_access, psz_path, psz_ref );
419 psz_ref = psz_absolute;
424 input_item_t *p_input;
425 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
426 p_input = input_ItemNewExt( p_playlist, psz_ref, NULL,
428 input_ItemCopyOptions( p_current->p_input, p_input );
429 /* FIXME: playlist_BothAddInput() can fail */
430 playlist_BothAddInput( p_playlist, p_input,
432 PLAYLIST_APPEND, PLAYLIST_END,
433 NULL, NULL, VLC_FALSE );
434 vlc_gc_decref( p_input );
439 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
440 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
442 if( psz_ref ) free( psz_ref );
444 if( b_play && p_item_in_category &&
445 p_item_in_category->i_children > 0 )
447 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, VLC_TRUE,
448 p_item_in_category, NULL );
450 vlc_object_release( p_playlist );
454 msg_Err( p_demux, "can't find playlist" );
458 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
462 msg_Err( p_demux, "cannot find /moov/mvhd" );
467 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
468 p_demux->pf_demux = DemuxRef;
474 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
475 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
478 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
480 msg_Err( p_demux, "cannot find any /moov/trak" );
483 msg_Dbg( p_demux, "found %d track%c",
485 p_sys->i_tracks ? 's':' ' );
487 /* allocate memory */
488 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
489 if( p_sys->track == NULL )
491 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
493 /* Search the first chap reference (like quicktime) */
494 p_sys->p_tref_chap = NULL;
495 for( i = 0; i < p_sys->i_tracks; i++ )
497 MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
498 MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
499 if( !p_chap || p_chap->data.p_tref_generic->i_entry_count <= 0 )
502 p_sys->p_tref_chap = p_chap;
506 /* now process each track and extract all usefull information */
507 for( i = 0; i < p_sys->i_tracks; i++ )
509 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
510 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
512 if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
515 switch( p_sys->track[i].fmt.i_cat )
524 psz_cat = "subtitle";
532 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
533 p_sys->track[i].i_track_ID, psz_cat,
534 p_sys->track[i].b_enable ? "enable":"disable",
535 p_sys->track[i].fmt.psz_language ?
536 p_sys->track[i].fmt.psz_language : "undef" );
538 else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
540 msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
541 p_sys->track[i].i_track_ID,
542 p_sys->track[i].fmt.psz_language ?
543 p_sys->track[i].fmt.psz_language : "undef" );
547 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
548 p_sys->track[i].i_track_ID );
553 LoadChapter( p_demux );
560 MP4_BoxFree( p_demux->s, p_sys->p_root );
566 /*****************************************************************************
567 * Demux: read packet and send them to decoders
568 *****************************************************************************
569 * TODO check for newly selected track (ie audio upt to now )
570 *****************************************************************************/
571 static int Demux( demux_t *p_demux )
573 demux_sys_t *p_sys = p_demux->p_sys;
574 unsigned int i_track;
577 unsigned int i_track_selected;
579 /* check for newly selected/unselected track */
580 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
583 mp4_track_t *tk = &p_sys->track[i_track];
586 if( !tk->b_ok || tk->b_chapter ||
587 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
592 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
594 if( tk->b_selected && !b )
596 MP4_TrackUnselect( p_demux, tk );
598 else if( !tk->b_selected && b)
600 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
609 if( i_track_selected <= 0 )
611 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
612 if( p_sys->i_timescale > 0 )
614 int64_t i_length = (mtime_t)1000000 *
615 (mtime_t)p_sys->i_duration /
616 (mtime_t)p_sys->i_timescale;
617 if( MP4_GetMoviePTS( p_sys ) >= i_length )
622 msg_Warn( p_demux, "no track selected, exiting..." );
627 MP4_UpdateSeekpoint( p_demux );
629 /* first wait for the good time to read a packet */
630 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
632 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
634 /* we will read 100ms for each stream so ...*/
635 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
637 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
639 mp4_track_t *tk = &p_sys->track[i_track];
641 if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
644 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
647 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
648 MP4_TrackGetDTS( p_demux, tk ),
649 MP4_GetMoviePTS( p_sys ) );
652 if( MP4_TrackSampleSize( tk ) > 0 )
658 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
660 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
662 MP4_TrackUnselect( p_demux, tk );
668 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
670 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
672 MP4_TrackUnselect( p_demux, tk );
676 if( tk->b_drms && tk->p_drms )
678 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
681 else if( tk->fmt.i_cat == SPU_ES )
683 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
684 p_block->i_buffer >= 2 )
686 uint16_t i_size = GetWBE( p_block->p_buffer );
688 if( i_size + 2 <= p_block->i_buffer )
691 /* remove the length field, and append a '\0' */
692 memmove( &p_block->p_buffer[0],
693 &p_block->p_buffer[2], i_size );
694 p_block->p_buffer[i_size] = '\0';
695 p_block->i_buffer = i_size + 1;
697 /* convert \r -> \n */
698 while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
706 p_block->i_buffer = 0;
711 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
713 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
715 p_block->i_pts = p_block->i_dts + i_delta;
716 else if( tk->fmt.i_cat != VIDEO_ES )
717 p_block->i_pts = p_block->i_dts;
721 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
722 es_out_Send( p_demux->out, tk->p_es, p_block );
726 if( MP4_TrackNextSample( p_demux, tk ) )
734 static void MP4_UpdateSeekpoint( demux_t *p_demux )
736 demux_sys_t *p_sys = p_demux->p_sys;
739 if( !p_sys->p_title )
741 i_time = MP4_GetMoviePTS( p_sys );
742 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
744 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
749 if( i != p_demux->info.i_seekpoint && i >= 0 )
751 p_demux->info.i_seekpoint = i;
752 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
755 /*****************************************************************************
756 * Seek: Got to i_date
757 ******************************************************************************/
758 static int Seek( demux_t *p_demux, mtime_t i_date )
760 demux_sys_t *p_sys = p_demux->p_sys;
761 unsigned int i_track;
763 /* First update update global time */
764 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
765 p_sys->i_pcr = i_date;
767 /* Now for each stream try to go to this time */
768 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
770 mp4_track_t *tk = &p_sys->track[i_track];
771 MP4_TrackSeek( p_demux, tk, i_date );
773 MP4_UpdateSeekpoint( p_demux );
777 /*****************************************************************************
779 *****************************************************************************/
780 static int Control( demux_t *p_demux, int i_query, va_list args )
782 demux_sys_t *p_sys = p_demux->p_sys;
789 case DEMUX_GET_POSITION:
790 pf = (double*)va_arg( args, double * );
791 if( p_sys->i_duration > 0 )
793 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
801 case DEMUX_SET_POSITION:
802 f = (double)va_arg( args, double );
803 if( p_sys->i_timescale > 0 )
805 i64 = (int64_t)( f * (double)1000000 *
806 (double)p_sys->i_duration /
807 (double)p_sys->i_timescale );
808 return Seek( p_demux, i64 );
810 else return VLC_SUCCESS;
813 pi64 = (int64_t*)va_arg( args, int64_t * );
814 if( p_sys->i_timescale > 0 )
816 *pi64 = (mtime_t)1000000 *
817 (mtime_t)p_sys->i_time /
818 (mtime_t)p_sys->i_timescale;
824 i64 = (int64_t)va_arg( args, int64_t );
825 return Seek( p_demux, i64 );
827 case DEMUX_GET_LENGTH:
828 pi64 = (int64_t*)va_arg( args, int64_t * );
829 if( p_sys->i_timescale > 0 )
831 *pi64 = (mtime_t)1000000 *
832 (mtime_t)p_sys->i_duration /
833 (mtime_t)p_sys->i_timescale;
839 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
844 vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
845 MP4_Box_t *p_0xa9xxx;
847 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
850 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
857 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
858 p_0xa9xxx = p_0xa9xxx->p_next )
861 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
864 /* FIXME FIXME: should convert from whatever the character
865 * encoding of MP4 meta data is to UTF-8. */
866 #define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
867 if( psz_utf ) { EnsureUTF8( psz_utf ); \
868 fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
870 /* XXX Becarefull p_udta can have box that are not 0xa9xx */
871 switch( p_0xa9xxx->i_type )
873 case FOURCC_0xa9nam: /* Full name */
874 SET( vlc_meta_SetTitle );
877 SET( vlc_meta_SetArtist );
880 SET( vlc_meta_SetArtist );
883 SET( vlc_meta_SetCopyright );
885 case FOURCC_0xa9day: /* Creation Date */
886 SET( vlc_meta_SetDate );
888 case FOURCC_0xa9des: /* Description */
889 SET( vlc_meta_SetDescription );
891 case FOURCC_0xa9gen: /* Genre */
892 SET( vlc_meta_SetGenre );
895 case FOURCC_0xa9alb: /* Album */
896 SET( vlc_meta_SetAlbum );
899 case FOURCC_0xa9trk: /* Track */
900 SET( vlc_meta_SetTracknum );
903 case FOURCC_0xa9cmt: /* Commment */
904 SET( vlc_meta_SetDescription );
907 case FOURCC_0xa9url: /* URL */
908 SET( vlc_meta_SetURL );
911 case FOURCC_0xa9enc: /* Encoded By */
912 SET( vlc_meta_SetEncodedBy );
916 case FOURCC_0xa9inf: /* Information */
917 case FOURCC_0xa9dir: /* Director */
918 case FOURCC_0xa9dis: /* Disclaimer */
919 case FOURCC_0xa9req: /* Requirements */
920 case FOURCC_0xa9fmt: /* Original Format */
921 case FOURCC_0xa9dsa: /* Display Source As */
922 case FOURCC_0xa9hst: /* Host Computer */
923 case FOURCC_0xa9prd: /* Producer */
924 case FOURCC_0xa9prf: /* Performers */
925 case FOURCC_0xa9ope: /* Original Performer */
926 case FOURCC_0xa9src: /* Providers Source Content */
927 case FOURCC_0xa9wrt: /* Writer */
928 case FOURCC_0xa9com: /* Composer */
929 case FOURCC_WLOC: /* Window Location */
930 /* TODO one day, but they aren't really meaningfull */
941 case DEMUX_GET_TITLE_INFO:
943 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
944 int *pi_int = (int*)va_arg( args, int* );
945 int *pi_title_offset = (int*)va_arg( args, int* );
946 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
948 if( !p_sys->p_title )
952 *ppp_title = malloc( sizeof( input_title_t**) );
953 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
954 *pi_title_offset = 0;
955 *pi_seekpoint_offset = 0;
958 case DEMUX_SET_TITLE:
960 const int i_title = (int)va_arg( args, int );
961 if( !p_sys->p_title || i_title != 0 )
965 case DEMUX_SET_SEEKPOINT:
967 const int i_seekpoint = (int)va_arg( args, int );
968 if( !p_sys->p_title )
970 return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
973 case DEMUX_SET_NEXT_DEMUX_TIME:
974 case DEMUX_SET_GROUP:
975 case DEMUX_HAS_UNSUPPORTED_META:
976 case DEMUX_GET_ATTACHMENTS:
980 msg_Warn( p_demux, "control query %u unimplemented", i_query );
985 /*****************************************************************************
986 * Close: frees unused data
987 *****************************************************************************/
988 static void Close ( vlc_object_t * p_this )
990 demux_t * p_demux = (demux_t *)p_this;
991 demux_sys_t *p_sys = p_demux->p_sys;
992 unsigned int i_track;
994 msg_Dbg( p_demux, "freeing all memory" );
996 MP4_BoxFree( p_demux->s, p_sys->p_root );
997 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
999 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
1001 FREENULL( p_sys->track );
1003 if( p_sys->p_title )
1004 vlc_input_title_Delete( p_sys->p_title );
1011 /****************************************************************************
1012 * Local functions, specific to vlc
1013 ****************************************************************************/
1015 static void LoadChapterGpac( demux_t *p_demux, MP4_Box_t *p_chpl )
1017 demux_sys_t *p_sys = p_demux->p_sys;
1020 p_sys->p_title = vlc_input_title_New();
1021 for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
1023 seekpoint_t *s = vlc_seekpoint_New();
1025 s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
1026 EnsureUTF8( s->psz_name );
1027 s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
1028 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1031 static void LoadChapterApple( demux_t *p_demux, mp4_track_t *tk )
1033 demux_sys_t *p_sys = p_demux->p_sys;
1035 for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1037 const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1038 const int64_t i_pts_delta = MP4_TrackGetPTSDelta( p_demux, tk );
1039 const unsigned int i_size = MP4_TrackSampleSize( tk );
1041 if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1044 const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
1045 const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1049 seekpoint_t *s = vlc_seekpoint_New();
1051 s->psz_name = strndup( &p_buffer[2], i_len );
1052 EnsureUTF8( s->psz_name );
1054 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1056 if( !p_sys->p_title )
1057 p_sys->p_title = vlc_input_title_New();
1058 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1061 if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1062 tk->chunk[tk->i_chunk].i_sample_count )
1066 static void LoadChapter( demux_t *p_demux )
1068 demux_sys_t *p_sys = p_demux->p_sys;
1071 if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
1073 LoadChapterGpac( p_demux, p_chpl );
1075 else if( p_sys->p_tref_chap )
1077 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1080 /* Load the first subtitle track like quicktime */
1081 for( i = 0; i < p_chap->i_entry_count; i++ )
1083 for( j = 0; j < p_sys->i_tracks; j++ )
1085 mp4_track_t *tk = &p_sys->track[j];
1086 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1087 tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
1090 if( j < p_sys->i_tracks )
1092 LoadChapterApple( p_demux, &p_sys->track[i] );
1099 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1100 static int TrackCreateChunksIndex( demux_t *p_demux,
1101 mp4_track_t *p_demux_track )
1103 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1106 unsigned int i_chunk;
1107 unsigned int i_index, i_last;
1109 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1110 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1111 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1113 return( VLC_EGENERIC );
1116 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1117 if( !p_demux_track->i_chunk_count )
1119 msg_Warn( p_demux, "no chunk defined" );
1120 return( VLC_EGENERIC );
1122 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1123 sizeof( mp4_chunk_t ) );
1124 if( p_demux_track->chunk == NULL )
1129 /* first we read chunk offset */
1130 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1132 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1134 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1136 ck->i_first_dts = 0;
1137 ck->p_sample_count_dts = NULL;
1138 ck->p_sample_delta_dts = NULL;
1139 ck->p_sample_count_pts = NULL;
1140 ck->p_sample_offset_pts = NULL;
1143 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1144 to be used for the sample XXX begin to 1
1145 We construct it begining at the end */
1146 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1147 i_index = p_stsc->data.p_stsc->i_entry_count;
1150 msg_Warn( p_demux, "cannot read chunk table or table empty" );
1151 return( VLC_EGENERIC );
1156 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1157 i_chunk < i_last; i_chunk++ )
1159 if( i_chunk >= p_demux_track->i_chunk_count )
1161 msg_Warn( p_demux, "corrupted chunk table" );
1162 return VLC_EGENERIC;
1165 p_demux_track->chunk[i_chunk].i_sample_description_index =
1166 p_stsc->data.p_stsc->i_sample_description_index[i_index];
1167 p_demux_track->chunk[i_chunk].i_sample_count =
1168 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1170 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1173 p_demux_track->chunk[0].i_sample_first = 0;
1174 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1176 p_demux_track->chunk[i_chunk].i_sample_first =
1177 p_demux_track->chunk[i_chunk-1].i_sample_first +
1178 p_demux_track->chunk[i_chunk-1].i_sample_count;
1181 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1182 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1187 static int TrackCreateSamplesIndex( demux_t *p_demux,
1188 mp4_track_t *p_demux_track )
1191 MP4_Box_data_stsz_t *stsz;
1192 MP4_Box_data_stts_t *stts;
1193 /* TODO use also stss and stsh table for seeking */
1194 /* FIXME use edit table */
1199 int64_t i_index_sample_used;
1204 * Gives the sample size for each samples. There is also a stz2 table
1205 * (compressed form) that we need to implement TODO */
1206 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1209 /* FIXME and stz2 */
1210 msg_Warn( p_demux, "cannot find STSZ box" );
1211 return VLC_EGENERIC;
1213 stsz = p_box->data.p_stsz;
1216 * Gives mapping between sample and decoding time
1218 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1221 msg_Warn( p_demux, "cannot find STTS box" );
1222 return VLC_EGENERIC;
1224 stts = p_box->data.p_stts;
1226 /* Use stsz table to create a sample number -> sample size table */
1227 p_demux_track->i_sample_count = stsz->i_sample_count;
1228 if( stsz->i_sample_size )
1230 /* 1: all sample have the same size, so no need to construct a table */
1231 p_demux_track->i_sample_size = stsz->i_sample_size;
1232 p_demux_track->p_sample_size = NULL;
1236 /* 2: each sample can have a different size */
1237 p_demux_track->i_sample_size = 0;
1238 p_demux_track->p_sample_size =
1239 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1240 if( p_demux_track->p_sample_size == NULL )
1243 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1245 p_demux_track->p_sample_size[i_sample] =
1246 stsz->i_entry_size[i_sample];
1250 /* Use stts table to create a sample number -> dts table.
1251 * XXX: if we don't want to waste too much memory, we can't expand
1252 * the box! so each chunk will contain an "extract" of this table
1253 * for fast research (problem with raw stream where a sample is sometime
1254 * just channels*bits_per_sample/8 */
1257 i_index = 0; i_index_sample_used = 0;
1258 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1260 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1261 int64_t i_entry, i_sample_count, i;
1264 ck->i_first_dts = i_last_dts;
1266 /* count how many entries are needed for this chunk
1267 * for p_sample_delta_dts and p_sample_count_dts */
1268 i_sample_count = ck->i_sample_count;
1271 while( i_sample_count > 0 )
1273 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1274 /* don't count already used sample in this entry */
1276 i_sample_count += i_index_sample_used;
1282 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1283 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1286 i_sample_count = ck->i_sample_count;
1287 for( i = 0; i < i_entry; i++ )
1292 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1294 i_used = __MIN( i_rest, i_sample_count );
1296 i_index_sample_used += i_used;
1297 i_sample_count -= i_used;
1299 ck->p_sample_count_dts[i] = i_used;
1300 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1302 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1304 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1307 i_index_sample_used = 0;
1313 * Gives the delta between decoding time (dts) and composition table (pts)
1315 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1318 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1320 msg_Warn( p_demux, "CTTS table" );
1322 /* Create pts-dts table per chunk */
1323 i_index = 0; i_index_sample_used = 0;
1324 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1326 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1327 int64_t i_entry, i_sample_count, i;
1329 /* count how many entries are needed for this chunk
1330 * for p_sample_delta_dts and p_sample_count_dts */
1331 i_sample_count = ck->i_sample_count;
1334 while( i_sample_count > 0 )
1336 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1338 /* don't count already used sample in this entry */
1340 i_sample_count += i_index_sample_used;
1346 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1347 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1350 i_sample_count = ck->i_sample_count;
1351 for( i = 0; i < i_entry; i++ )
1356 i_rest = ctts->i_sample_count[i_index] -
1357 i_index_sample_used;
1359 i_used = __MIN( i_rest, i_sample_count );
1361 i_index_sample_used += i_used;
1362 i_sample_count -= i_used;
1364 ck->p_sample_count_pts[i] = i_used;
1365 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1367 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1370 i_index_sample_used = 0;
1376 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1377 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1378 i_last_dts / p_demux_track->i_timescale );
1385 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1387 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1388 unsigned int i_chunk, es_out_id_t **pp_es )
1390 MP4_Box_t *p_sample;
1397 if( !p_track->chunk[i_chunk].i_sample_description_index )
1399 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1400 p_track->i_track_ID );
1401 return VLC_EGENERIC;
1404 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1405 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1408 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1410 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1411 p_track->i_track_ID );
1412 return VLC_EGENERIC;
1415 p_track->p_sample = p_sample;
1417 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1419 MP4_Box_data_sample_soun_t *p_soun;
1421 p_soun = p_sample->data.p_sample_soun;
1423 if( p_soun->i_qt_version == 0 )
1425 switch( p_sample->i_type )
1427 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1428 p_soun->i_qt_version = 1;
1429 p_soun->i_sample_per_packet = 64;
1430 p_soun->i_bytes_per_packet = 34;
1431 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1432 p_soun->i_bytes_per_sample = 2;
1434 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1435 p_soun->i_qt_version = 1;
1436 p_soun->i_sample_per_packet = 6;
1437 p_soun->i_bytes_per_packet = 2;
1438 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1439 p_soun->i_bytes_per_sample = 2;
1441 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1442 p_soun->i_qt_version = 1;
1443 p_soun->i_sample_per_packet = 12;
1444 p_soun->i_bytes_per_packet = 2;
1445 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1446 p_soun->i_bytes_per_sample = 2;
1448 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1449 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1450 p_soun->i_samplesize = 8;
1457 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1459 p_soun->i_qt_version = 0;
1464 /* It's a little ugly but .. there are special cases */
1465 switch( p_sample->i_type )
1467 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1468 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1469 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1472 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1473 p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1475 /* Buggy files workaround */
1476 if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1477 p_sample->data.p_sample_soun->i_sampleratehi) )
1479 MP4_Box_data_sample_soun_t *p_soun =
1480 p_sample->data.p_sample_soun;
1482 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1483 "(%u), making both equal (report any problem).",
1484 p_track->i_timescale, p_soun->i_sampleratehi );
1486 if( p_soun->i_sampleratehi )
1487 p_track->i_timescale = p_soun->i_sampleratehi;
1489 p_soun->i_sampleratehi = p_track->i_timescale;
1493 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1494 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1497 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1498 case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1499 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1500 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1501 /* FIXME UTF-8 doesn't work here ? */
1502 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1505 case VLC_FOURCC('y','v','1','2'):
1506 p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1508 case VLC_FOURCC('y','u','v','2'):
1509 p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1512 case VLC_FOURCC('i','n','2','4'):
1513 /* in in24/in32 there's enda-atom to tell it's little-endian (if present) */
1514 if( ( MP4_BoxGet( p_sample, "wave/enda" ) ) ||
1515 ( MP4_BoxGet( p_sample, "enda" ) ) )
1517 p_track->fmt.i_codec = VLC_FOURCC('4','2','n','i');
1519 p_track->fmt.i_codec = p_sample->i_type;
1524 p_track->fmt.i_codec = p_sample->i_type;
1528 /* now see if esds is present and if so create a data packet
1529 with decoder_specific_info */
1530 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1531 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1532 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1533 ( p_esds->data.p_esds )&&
1536 /* First update information based on i_objectTypeIndication */
1537 switch( p_decconfig->i_objectTypeIndication )
1539 case( 0x20 ): /* MPEG4 VIDEO */
1540 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1543 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1550 case( 0x65): /* MPEG2 video */
1551 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1553 /* Theses are MPEG2-AAC */
1554 case( 0x66): /* main profile */
1555 case( 0x67): /* Low complexity profile */
1556 case( 0x68): /* Scaleable Sampling rate profile */
1557 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1559 /* true MPEG 2 audio */
1561 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1563 case( 0x6a): /* MPEG1 video */
1564 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1566 case( 0x6b): /* MPEG1 audio */
1567 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1569 case( 0x6c ): /* jpeg */
1570 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1574 case( 0xe0 ): /* NeroDigital: dvd subs */
1575 if( p_track->fmt.i_cat == SPU_ES )
1577 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1578 if( p_track->i_width > 0 )
1579 p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1580 if( p_track->i_height > 0 )
1581 p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1586 /* Unknown entry, but don't touch i_fourcc */
1588 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1589 p_decconfig->i_objectTypeIndication,
1590 p_track->i_track_ID );
1593 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1594 if( p_track->fmt.i_extra > 0 )
1596 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1597 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1598 p_track->fmt.i_extra );
1603 switch( p_sample->i_type )
1605 /* qt decoder, send the complete chunk */
1606 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1607 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1608 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1609 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1610 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1611 p_track->fmt.i_extra =
1612 p_sample->data.p_sample_vide->i_qt_image_description;
1613 if( p_track->fmt.i_extra > 0 )
1615 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1616 memcpy( p_track->fmt.p_extra,
1617 p_sample->data.p_sample_vide->p_qt_image_description,
1618 p_track->fmt.i_extra);
1621 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1622 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1623 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1624 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1625 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1626 p_track->fmt.i_extra =
1627 p_sample->data.p_sample_soun->i_qt_description;
1628 if( p_track->fmt.i_extra > 0 )
1630 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1631 memcpy( p_track->fmt.p_extra,
1632 p_sample->data.p_sample_soun->p_qt_description,
1633 p_track->fmt.i_extra);
1637 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1638 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1640 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1644 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1645 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1646 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1647 p_track->fmt.i_extra );
1651 msg_Err( p_demux, "missing avcC" );
1663 /* some last initialisation */
1664 switch( p_track->fmt.i_cat )
1667 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1668 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1669 p_track->fmt.video.i_bits_per_pixel =
1670 p_sample->data.p_sample_vide->i_depth;
1672 /* fall on display size */
1673 if( p_track->fmt.video.i_width <= 0 )
1674 p_track->fmt.video.i_width = p_track->i_width;
1675 if( p_track->fmt.video.i_height <= 0 )
1676 p_track->fmt.video.i_height = p_track->i_height;
1678 /* Find out apect ratio from display size */
1679 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1680 /* Work-around buggy muxed files */
1681 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1682 p_track->fmt.video.i_aspect =
1683 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1685 /* Support for cropping (eg. in H263 files) */
1686 p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1687 p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1690 p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1691 p_track->fmt.video.i_frame_rate_base = 1;
1693 if( p_track->fmt.video.i_frame_rate &&
1694 (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1695 p_box->data.p_stts->i_entry_count >= 1 )
1697 p_track->fmt.video.i_frame_rate_base =
1698 p_box->data.p_stts->i_sample_delta[0];
1704 p_track->fmt.audio.i_channels =
1705 p_sample->data.p_sample_soun->i_channelcount;
1706 p_track->fmt.audio.i_rate =
1707 p_sample->data.p_sample_soun->i_sampleratehi;
1708 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1709 p_sample->data.p_sample_soun->i_sampleratehi *
1710 p_sample->data.p_sample_soun->i_samplesize;
1711 p_track->fmt.audio.i_bitspersample =
1712 p_sample->data.p_sample_soun->i_samplesize;
1720 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1725 /* given a time it return sample/chunk
1726 * it also update elst field of the track
1728 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1729 int64_t i_start, uint32_t *pi_chunk,
1730 uint32_t *pi_sample )
1732 demux_sys_t *p_sys = p_demux->p_sys;
1735 unsigned int i_sample;
1736 unsigned int i_chunk;
1739 /* FIXME see if it's needed to check p_track->i_chunk_count */
1740 if( p_track->i_chunk_count == 0 )
1741 return( VLC_EGENERIC );
1743 /* handle elst (find the correct one) */
1744 MP4_TrackSetELST( p_demux, p_track, i_start );
1745 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1747 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1748 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1750 /* now calculate i_start for this elst */
1752 i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1760 /* to track time scale */
1761 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1762 /* add elst offset */
1763 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1764 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1765 elst->i_media_time[p_track->i_elst] > 0 )
1767 i_start += elst->i_media_time[p_track->i_elst];
1770 msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1771 "ms (track)", p_track->i_elst,
1772 i_mvt * 1000 / p_sys->i_timescale,
1773 i_start * 1000 / p_track->i_timescale );
1777 /* convert absolute time to in timescale unit */
1778 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1781 /* we start from sample 0/chunk 0, hope it won't take too much time */
1782 /* *** find good chunk *** */
1783 for( i_chunk = 0; ; i_chunk++ )
1785 if( i_chunk + 1 >= p_track->i_chunk_count )
1787 /* at the end and can't check if i_start in this chunk,
1788 it will be check while searching i_sample */
1789 i_chunk = p_track->i_chunk_count - 1;
1793 if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1794 (uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1800 /* *** find sample in the chunk *** */
1801 i_sample = p_track->chunk[i_chunk].i_sample_first;
1802 i_dts = p_track->chunk[i_chunk].i_first_dts;
1803 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1806 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1807 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1810 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1811 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1813 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1818 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1822 i_sample += ( i_start - i_dts ) /
1823 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1828 if( i_sample >= p_track->i_sample_count )
1830 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1831 "(seeking too far) chunk=%d sample=%d",
1832 p_track->i_track_ID, i_chunk, i_sample );
1833 return( VLC_EGENERIC );
1837 /* *** Try to find nearest sync points *** */
1838 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1840 unsigned int i_index;
1842 "track[Id 0x%x] using Sync Sample Box (stss)",
1843 p_track->i_track_ID );
1844 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1846 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1850 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1852 p_stss->data.p_stss->i_sample_number[i_index-1] );
1853 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1854 /* new i_sample is less than old so i_chunk can only decreased */
1855 while( i_chunk > 0 &&
1856 i_sample < p_track->chunk[i_chunk].i_sample_first )
1863 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1865 p_stss->data.p_stss->i_sample_number[i_index] );
1866 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1867 /* new i_sample is more than old so i_chunk can only increased */
1868 while( i_chunk < p_track->i_chunk_count - 1 &&
1869 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1870 p_track->chunk[i_chunk].i_sample_count )
1881 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1882 "Sample Box (stss)", p_track->i_track_ID );
1885 *pi_chunk = i_chunk;
1886 *pi_sample = i_sample;
1891 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1892 unsigned int i_chunk, unsigned int i_sample )
1894 vlc_bool_t b_reselect = VLC_FALSE;
1896 /* now see if actual es is ok */
1897 if( (p_track->i_chunk >= p_track->i_chunk_count - 1) ||
1898 (p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1899 p_track->chunk[i_chunk].i_sample_description_index) )
1901 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1902 p_track->i_track_ID );
1904 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1905 p_track->p_es, &b_reselect );
1907 es_out_Del( p_demux->out, p_track->p_es );
1909 p_track->p_es = NULL;
1911 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1913 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1914 p_track->i_track_ID );
1916 p_track->b_ok = VLC_FALSE;
1917 p_track->b_selected = VLC_FALSE;
1918 return VLC_EGENERIC;
1922 /* select again the new decoder */
1925 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1928 p_track->i_chunk = i_chunk;
1929 p_track->i_sample = i_sample;
1931 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1934 /****************************************************************************
1936 ****************************************************************************
1937 * Parse track information and create all needed data to run a track
1938 * If it succeed b_ok is set to 1 else to 0
1939 ****************************************************************************/
1940 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1941 MP4_Box_t *p_box_trak )
1943 demux_sys_t *p_sys = p_demux->p_sys;
1945 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1946 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1961 /* hint track unsupported */
1963 /* set default value (-> track unusable) */
1964 p_track->b_ok = VLC_FALSE;
1965 p_track->b_enable = VLC_FALSE;
1966 p_track->b_selected = VLC_FALSE;
1967 p_track->b_chapter = VLC_FALSE;
1969 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1976 /* do we launch this track by default ? */
1978 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1980 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1981 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1982 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1986 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1989 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1990 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1992 if( ( !p_mdhd )||( !p_hdlr ) )
1997 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1999 for( i = 0; i < 3; i++ )
2001 language[i] = p_mdhd->data.p_mdhd->i_language[i];
2005 switch( p_hdlr->data.p_hdlr->i_handler_type )
2007 case( FOURCC_soun ):
2008 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2012 p_track->fmt.i_cat = AUDIO_ES;
2015 case( FOURCC_vide ):
2016 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2020 p_track->fmt.i_cat = VIDEO_ES;
2023 case( FOURCC_text ):
2024 case( FOURCC_subp ):
2025 case( FOURCC_tx3g ):
2026 p_track->fmt.i_cat = SPU_ES;
2033 p_track->i_elst = 0;
2034 p_track->i_elst_time = 0;
2035 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2037 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
2040 msg_Warn( p_demux, "elst box found" );
2041 for( i = 0; i < elst->i_entry_count; i++ )
2043 msg_Dbg( p_demux, " - [%d] duration="I64Fd"ms media time="I64Fd
2044 "ms) rate=%d.%d", i,
2045 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2046 elst->i_media_time[i] >= 0 ?
2047 (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2049 elst->i_media_rate_integer[i],
2050 elst->i_media_rate_fraction[i] );
2057 p_dinf = MP4_BoxGet( p_minf, "dinf" );
2059 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2060 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2065 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
2066 p_track->b_drms = p_drms != NULL;
2067 p_track->p_drms = p_track->b_drms ?
2068 p_drms->data.p_sample_soun->p_drms : NULL;
2071 if( strcmp( language, "```" ) && strcmp( language, "und" ) )
2073 p_track->fmt.psz_language = strdup( language );
2076 p_udta = MP4_BoxGet( p_box_trak, "udta" );
2079 MP4_Box_t *p_0xa9xxx;
2080 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
2081 p_0xa9xxx = p_0xa9xxx->p_next )
2083 switch( p_0xa9xxx->i_type )
2085 case FOURCC_0xa9nam:
2086 p_track->fmt.psz_description =
2087 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
2093 /* Create chunk index table and sample index table */
2094 if( TrackCreateChunksIndex( p_demux,p_track ) ||
2095 TrackCreateSamplesIndex( p_demux, p_track ) )
2097 return; /* cannot create chunks index */
2100 p_track->i_chunk = 0;
2101 p_track->i_sample = 0;
2103 /* Mark chapter only track */
2104 if( !p_track->b_enable && p_sys->p_tref_chap )
2106 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2109 for( i = 0; i < p_chap->i_entry_count; i++ )
2111 if( p_track->i_track_ID == p_chap->i_track_ID[i] )
2113 p_track->b_chapter = VLC_TRUE;
2120 p_track->p_es = NULL;
2121 if( TrackCreateES( p_demux,
2122 p_track, p_track->i_chunk,
2123 p_track->b_chapter ? NULL : &p_track->p_es ) )
2125 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2126 p_track->i_track_ID );
2129 p_track->b_ok = VLC_TRUE;
2133 for( i = 0; i < p_track->i_chunk_count; i++ )
2135 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2136 i, p_track->chunk[i].i_sample_count,
2137 p_track->chunk[i].i_first_dts );
2144 /****************************************************************************
2146 ****************************************************************************
2147 * Destroy a track created by MP4_TrackCreate.
2148 ****************************************************************************/
2149 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
2151 unsigned int i_chunk;
2153 p_track->b_ok = VLC_FALSE;
2154 p_track->b_enable = VLC_FALSE;
2155 p_track->b_selected = VLC_FALSE;
2157 es_format_Clean( &p_track->fmt );
2159 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2161 if( p_track->chunk )
2163 FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2164 FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2166 FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2167 FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2170 FREENULL( p_track->chunk );
2172 if( !p_track->i_sample_size )
2174 FREENULL( p_track->p_sample_size );
2178 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2181 if( !p_track->b_ok || p_track->b_chapter )
2183 return VLC_EGENERIC;
2186 if( p_track->b_selected )
2188 msg_Warn( p_demux, "track[Id 0x%x] already selected",
2189 p_track->i_track_ID );
2193 return MP4_TrackSeek( p_demux, p_track, i_start );
2196 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2198 if( !p_track->b_ok || p_track->b_chapter )
2203 if( !p_track->b_selected )
2205 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2206 p_track->i_track_ID );
2211 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2212 p_track->p_es, VLC_FALSE );
2215 p_track->b_selected = VLC_FALSE;
2218 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2224 if( !p_track->b_ok || p_track->b_chapter )
2225 return VLC_EGENERIC;
2227 p_track->b_selected = VLC_FALSE;
2229 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2230 &i_chunk, &i_sample ) )
2232 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2233 p_track->i_track_ID );
2234 return VLC_EGENERIC;
2237 p_track->b_selected = VLC_TRUE;
2239 if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2242 p_track->b_selected = VLC_TRUE;
2244 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2245 p_track->p_es, i_start );
2248 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2253 * 3 types: for audio
2256 #define QT_V0_MAX_SAMPLES 1024
2257 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2260 MP4_Box_data_sample_soun_t *p_soun;
2262 if( p_track->i_sample_size == 0 )
2264 /* most simple case */
2265 return p_track->p_sample_size[p_track->i_sample];
2267 if( p_track->fmt.i_cat != AUDIO_ES )
2269 return p_track->i_sample_size;
2272 p_soun = p_track->p_sample->data.p_sample_soun;
2274 if( p_soun->i_qt_version == 1 )
2276 i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2277 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2279 else if( p_track->i_sample_size > 256 )
2281 /* We do that so we don't read too much data
2282 * (in this case we are likely dealing with compressed data) */
2283 i_size = p_track->i_sample_size;
2287 /* Read a bunch of samples at once */
2288 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2289 ( p_track->i_sample -
2290 p_track->chunk[p_track->i_chunk].i_sample_first );
2292 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2293 i_size = i_samples * p_track->i_sample_size;
2296 //fprintf( stderr, "size=%d\n", i_size );
2300 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2302 unsigned int i_sample;
2305 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2307 if( p_track->i_sample_size )
2309 MP4_Box_data_sample_soun_t *p_soun =
2310 p_track->p_sample->data.p_sample_soun;
2312 if( p_soun->i_qt_version == 0 )
2314 i_pos += ( p_track->i_sample -
2315 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2316 p_track->i_sample_size;
2320 /* we read chunk by chunk */
2326 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2327 i_sample < p_track->i_sample; i_sample++ )
2329 i_pos += p_track->p_sample_size[i_sample];
2336 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2338 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2340 MP4_Box_data_sample_soun_t *p_soun;
2342 p_soun = p_track->p_sample->data.p_sample_soun;
2344 if( p_soun->i_qt_version == 1 )
2346 /* chunk by chunk */
2348 p_track->chunk[p_track->i_chunk].i_sample_first +
2349 p_track->chunk[p_track->i_chunk].i_sample_count;
2351 else if( p_track->i_sample_size > 256 )
2353 /* We do that so we don't read too much data
2354 * (in this case we are likely dealing with compressed data) */
2355 p_track->i_sample += 1;
2360 p_track->i_sample += QT_V0_MAX_SAMPLES;
2361 if( p_track->i_sample >
2362 p_track->chunk[p_track->i_chunk].i_sample_first +
2363 p_track->chunk[p_track->i_chunk].i_sample_count )
2366 p_track->chunk[p_track->i_chunk].i_sample_first +
2367 p_track->chunk[p_track->i_chunk].i_sample_count;
2373 p_track->i_sample++;
2376 if( p_track->i_sample >= p_track->i_sample_count )
2377 return VLC_EGENERIC;
2379 /* Have we changed chunk ? */
2380 if( p_track->i_sample >=
2381 p_track->chunk[p_track->i_chunk].i_sample_first +
2382 p_track->chunk[p_track->i_chunk].i_sample_count )
2384 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2385 p_track->i_sample ) )
2387 msg_Warn( p_demux, "track[0x%x] will be disabled "
2388 "(cannot restart decoder)", p_track->i_track_ID );
2389 MP4_TrackUnselect( p_demux, p_track );
2390 return VLC_EGENERIC;
2394 /* Have we changed elst */
2395 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2397 demux_sys_t *p_sys = p_demux->p_sys;
2398 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2399 uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2400 p_sys->i_timescale / (int64_t)1000000;
2402 if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2403 i_mvt >= p_track->i_elst_time +
2404 elst->i_segment_duration[p_track->i_elst] )
2406 MP4_TrackSetELST( p_demux, p_track,
2407 MP4_TrackGetDTS( p_demux, p_track ) );
2414 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2417 demux_sys_t *p_sys = p_demux->p_sys;
2418 int i_elst_last = tk->i_elst;
2420 /* handle elst (find the correct one) */
2422 tk->i_elst_time = 0;
2423 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2425 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2426 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2428 for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2430 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2432 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2436 tk->i_elst_time += i_dur;
2439 if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2441 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2442 tk->i_elst = elst->i_entry_count - 1;
2443 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2446 if( elst->i_media_time[tk->i_elst] < 0 )
2449 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2452 if( i_elst_last != tk->i_elst )
2454 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2458 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
2459 playlist_item_t **pp_item )
2461 input_thread_t *p_input = (input_thread_t *)vlc_object_find( p_demux, VLC_OBJECT_INPUT, FIND_PARENT );
2462 vlc_bool_t b_play = var_CreateGetBool( p_demux, "playlist-autostart" );
2467 if( b_play && p_playlist->status.p_item &&
2468 p_playlist->status.p_item->p_input == input_GetItem(p_input) )
2470 msg_Dbg( p_playlist, "starting playlist playback" );
2471 *pp_item = p_playlist->status.p_item;
2476 input_item_t *p_current = input_GetItem( p_input );
2478 *pp_item = playlist_ItemGetByInput( p_playlist, p_current, VLC_FALSE );
2480 msg_Dbg( p_playlist, "unable to find item in playlist");
2482 msg_Dbg( p_playlist, "not starting playlist playback");
2485 vlc_object_release( p_input );