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 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
35 #include <vlc_demux.h>
37 #include <vlc_charset.h>
38 #include <vlc_iso_lang.h>
40 #include <vlc_input.h>
46 #define uint64_t int64_t
49 /*****************************************************************************
51 *****************************************************************************/
52 static int Open ( vlc_object_t * );
53 static void Close( vlc_object_t * );
56 set_category( CAT_INPUT );
57 set_subcategory( SUBCAT_INPUT_DEMUX );
58 set_description( N_("MP4 stream demuxer") );
59 set_capability( "demux", 242 );
60 set_callbacks( Open, Close );
63 /*****************************************************************************
65 *****************************************************************************/
66 static int Demux ( demux_t * );
67 static int DemuxRef( demux_t *p_demux ){ (void)p_demux; return 0;}
68 static int Seek ( demux_t *, mtime_t );
69 static int Control ( demux_t *, int, va_list );
71 /* Contain all information about a chunk */
74 uint64_t i_offset; /* absolute position of this chunk in the file */
75 uint32_t i_sample_description_index; /* index for SampleEntry to use */
76 uint32_t i_sample_count; /* how many samples in this chunk */
77 uint32_t i_sample_first; /* index of the first sample in this chunk */
79 /* now provide way to calculate pts, dts, and offset without to
80 much memory and with fast acces */
82 /* with this we can calculate dts/pts without waste memory */
84 uint32_t *p_sample_count_dts;
85 uint32_t *p_sample_delta_dts; /* dts delta */
87 uint32_t *p_sample_count_pts;
88 int32_t *p_sample_offset_pts; /* pts-dts */
90 /* TODO if needed add pts
91 but quickly *add* support for edts and seeking */
95 /* Contain all needed information for read all track with vlc */
98 unsigned int i_track_ID;/* this should be unique */
100 int b_ok; /* The track is usable */
101 int b_enable; /* is the trak enable by default */
102 bool b_selected; /* is the trak being played */
103 bool b_chapter; /* True when used for chapter only */
108 /* display size only ! */
112 /* more internal data */
113 uint64_t i_timescale; /* time scale for this track only */
116 int i_elst; /* current elst */
117 int64_t i_elst_time; /* current elst start time (in movie time scale)*/
118 MP4_Box_t *p_elst; /* elst (could be NULL) */
120 /* give the next sample to read, i_chunk is to find quickly where
121 the sample is located */
122 uint32_t i_sample; /* next sample to read */
123 uint32_t i_chunk; /* chunk where next sample is stored */
124 /* total count of chunk and sample */
125 uint32_t i_chunk_count;
126 uint32_t i_sample_count;
128 mp4_chunk_t *chunk; /* always defined for each chunk */
130 /* sample size, p_sample_size defined only if i_sample_size == 0
131 else i_sample_size is size for all sample */
132 uint32_t i_sample_size;
133 uint32_t *p_sample_size; /* XXX perhaps add file offset if take
134 too much time to do sumations each time*/
136 MP4_Box_t *p_stbl; /* will contain all timing information */
137 MP4_Box_t *p_stsd; /* will contain all data to initialize decoder */
138 MP4_Box_t *p_sample;/* point on actual sdsd */
148 MP4_Box_t *p_root; /* container for the whole file */
152 uint64_t i_time; /* time position of the presentation
153 * in movie timescale */
154 uint64_t i_timescale; /* movie time scale */
155 uint64_t i_duration; /* movie duration */
156 unsigned int i_tracks; /* number of tracks */
157 mp4_track_t *track; /* array of track */
160 MP4_Box_t *p_tref_chap;
163 input_title_t *p_title;
166 /*****************************************************************************
167 * Declaration of local function
168 *****************************************************************************/
169 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *);
170 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
172 static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
173 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
175 static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
177 static uint64_t MP4_TrackGetPos ( mp4_track_t * );
178 static int MP4_TrackSampleSize( mp4_track_t * );
179 static int MP4_TrackNextSample( demux_t *, mp4_track_t * );
180 static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
182 static void MP4_UpdateSeekpoint( demux_t * );
184 /* Return time in s of a track */
185 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
187 #define chunk p_track->chunk[p_track->i_chunk]
189 unsigned int i_index = 0;
190 unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
191 int64_t i_dts = chunk.i_first_dts;
193 while( i_sample > 0 )
195 if( i_sample > chunk.p_sample_count_dts[i_index] )
197 i_dts += chunk.p_sample_count_dts[i_index] *
198 chunk.p_sample_delta_dts[i_index];
199 i_sample -= chunk.p_sample_count_dts[i_index];
204 i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
212 /* now handle elst */
213 if( p_track->p_elst )
215 demux_sys_t *p_sys = p_demux->p_sys;
216 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
218 /* convert to offset */
219 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
220 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
221 elst->i_media_time[p_track->i_elst] > 0 )
223 i_dts -= elst->i_media_time[p_track->i_elst];
226 /* add i_elst_time */
227 i_dts += p_track->i_elst_time * p_track->i_timescale /
230 if( i_dts < 0 ) i_dts = 0;
233 return INT64_C(1000000) * i_dts / p_track->i_timescale;
236 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
238 mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
239 unsigned int i_index = 0;
240 unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
242 if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
245 for( i_index = 0;; i_index++ )
247 if( i_sample < ck->p_sample_count_pts[i_index] )
248 return ck->p_sample_offset_pts[i_index] * INT64_C(1000000) /
249 (int64_t)p_track->i_timescale;
251 i_sample -= ck->p_sample_count_pts[i_index];
255 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
257 return INT64_C(1000000) * p_sys->i_time / p_sys->i_timescale;
260 static void LoadChapter( demux_t *p_demux );
262 /*****************************************************************************
263 * Open: check file and initializes MP4 structures
264 *****************************************************************************/
265 static int Open( vlc_object_t * p_this )
267 demux_t *p_demux = (demux_t *)p_this;
270 const uint8_t *p_peek;
280 /* A little test to see if it could be a mp4 */
281 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
283 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
294 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
301 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
304 msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
308 /*Set exported functions */
309 p_demux->pf_demux = Demux;
310 p_demux->pf_control = Control;
312 /* create our structure that will contains all data */
313 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
314 memset( p_sys, 0, sizeof( demux_sys_t ) );
316 /* Now load all boxes ( except raw data ) */
317 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
319 msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
323 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
325 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
327 switch( p_ftyp->data.p_ftyp->i_major_brand )
331 "ISO Media file (isom) version %d.",
332 p_ftyp->data.p_ftyp->i_minor_version );
336 "unrecognized major file specification (%4.4s).",
337 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
343 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
346 /* the file need to have one moov box */
347 if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
349 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
353 msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
356 /* we have a free box as a moov, rename it */
357 p_foov->i_type = FOURCC_moov;
360 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
362 int i_count = MP4_BoxCount( p_rmra, "rmda" );
365 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
367 input_thread_t * p_input = vlc_object_find( p_demux, VLC_OBJECT_INPUT, FIND_PARENT );
368 input_item_t * p_current = input_GetItem( p_input );
369 p_current->i_type = ITEM_TYPE_PLAYLIST;
371 for( i = 0; i < i_count; i++ )
373 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
377 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
381 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
383 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
384 psz_ref, (char*)&i_ref_type );
386 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
388 if( strstr( psz_ref, "qt5gateQT" ) )
390 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
393 if( !strncmp( psz_ref, "http://", 7 ) ||
394 !strncmp( psz_ref, "rtsp://", 7 ) )
401 char *psz_path = strdup( p_demux->psz_path );
402 char *end = strrchr( psz_path, '/' );
403 if( end ) end[1] = '\0';
404 else *psz_path = '\0';
406 asprintf( &psz_absolute, "%s://%s%s",
407 p_demux->psz_access, psz_path, psz_ref );
410 psz_ref = psz_absolute;
413 input_item_t *p_input;
414 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
415 p_input = input_ItemNewExt( p_demux, psz_ref, NULL,
417 input_ItemCopyOptions( p_current, p_input );
418 input_ItemAddSubItem( p_current, p_input );
419 vlc_gc_decref( p_input );
423 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
424 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
428 vlc_object_release( p_input );
431 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
435 msg_Err( p_demux, "cannot find /moov/mvhd" );
440 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
441 p_demux->pf_demux = DemuxRef;
447 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
448 if( p_sys->i_timescale == 0 )
450 msg_Err( p_this, "bad timescale" );
453 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
456 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
458 msg_Err( p_demux, "cannot find any /moov/trak" );
461 msg_Dbg( p_demux, "found %d track%c",
463 p_sys->i_tracks ? 's':' ' );
465 /* allocate memory */
466 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
467 if( p_sys->track == NULL )
469 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
471 /* Search the first chap reference (like quicktime) */
472 p_sys->p_tref_chap = NULL;
473 for( i = 0; i < p_sys->i_tracks; i++ )
475 MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
476 MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
477 if( !p_chap || p_chap->data.p_tref_generic->i_entry_count <= 0 )
480 p_sys->p_tref_chap = p_chap;
484 /* now process each track and extract all usefull information */
485 for( i = 0; i < p_sys->i_tracks; i++ )
487 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
488 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
490 if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
493 switch( p_sys->track[i].fmt.i_cat )
502 psz_cat = "subtitle";
510 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
511 p_sys->track[i].i_track_ID, psz_cat,
512 p_sys->track[i].b_enable ? "enable":"disable",
513 p_sys->track[i].fmt.psz_language ?
514 p_sys->track[i].fmt.psz_language : "undef" );
516 else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
518 msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
519 p_sys->track[i].i_track_ID,
520 p_sys->track[i].fmt.psz_language ?
521 p_sys->track[i].fmt.psz_language : "undef" );
525 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
526 p_sys->track[i].i_track_ID );
531 LoadChapter( p_demux );
538 MP4_BoxFree( p_demux->s, p_sys->p_root );
544 /*****************************************************************************
545 * Demux: read packet and send them to decoders
546 *****************************************************************************
547 * TODO check for newly selected track (ie audio upt to now )
548 *****************************************************************************/
549 static int Demux( demux_t *p_demux )
551 demux_sys_t *p_sys = p_demux->p_sys;
552 unsigned int i_track;
555 unsigned int i_track_selected;
557 /* check for newly selected/unselected track */
558 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
561 mp4_track_t *tk = &p_sys->track[i_track];
564 if( !tk->b_ok || tk->b_chapter ||
565 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
570 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
572 if( tk->b_selected && !b )
574 MP4_TrackUnselect( p_demux, tk );
576 else if( !tk->b_selected && b)
578 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
587 if( i_track_selected <= 0 )
589 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
590 if( p_sys->i_timescale > 0 )
592 int64_t i_length = (mtime_t)1000000 *
593 (mtime_t)p_sys->i_duration /
594 (mtime_t)p_sys->i_timescale;
595 if( MP4_GetMoviePTS( p_sys ) >= i_length )
600 msg_Warn( p_demux, "no track selected, exiting..." );
605 MP4_UpdateSeekpoint( p_demux );
607 /* first wait for the good time to read a packet */
608 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
610 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
612 /* we will read 100ms for each stream so ...*/
613 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
615 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
617 mp4_track_t *tk = &p_sys->track[i_track];
619 if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
622 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
625 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
626 MP4_TrackGetDTS( p_demux, tk ),
627 MP4_GetMoviePTS( p_sys ) );
630 if( MP4_TrackSampleSize( tk ) > 0 )
636 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
638 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
640 MP4_TrackUnselect( p_demux, tk );
646 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
648 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
650 MP4_TrackUnselect( p_demux, tk );
654 if( tk->b_drms && tk->p_drms )
656 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
659 else if( tk->fmt.i_cat == SPU_ES )
661 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
662 p_block->i_buffer >= 2 )
664 uint16_t i_size = GetWBE( p_block->p_buffer );
666 if( i_size + 2 <= p_block->i_buffer )
669 /* remove the length field, and append a '\0' */
670 memmove( &p_block->p_buffer[0],
671 &p_block->p_buffer[2], i_size );
672 p_block->p_buffer[i_size] = '\0';
673 p_block->i_buffer = i_size + 1;
675 /* convert \r -> \n */
676 while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
684 p_block->i_buffer = 0;
689 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
691 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
693 p_block->i_pts = p_block->i_dts + i_delta;
694 else if( tk->fmt.i_cat != VIDEO_ES )
695 p_block->i_pts = p_block->i_dts;
699 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
700 es_out_Send( p_demux->out, tk->p_es, p_block );
704 if( MP4_TrackNextSample( p_demux, tk ) )
712 static void MP4_UpdateSeekpoint( demux_t *p_demux )
714 demux_sys_t *p_sys = p_demux->p_sys;
717 if( !p_sys->p_title )
719 i_time = MP4_GetMoviePTS( p_sys );
720 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
722 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
727 if( i != p_demux->info.i_seekpoint && i >= 0 )
729 p_demux->info.i_seekpoint = i;
730 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
733 /*****************************************************************************
734 * Seek: Got to i_date
735 ******************************************************************************/
736 static int Seek( demux_t *p_demux, mtime_t i_date )
738 demux_sys_t *p_sys = p_demux->p_sys;
739 unsigned int i_track;
741 /* First update update global time */
742 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
743 p_sys->i_pcr = i_date;
745 /* Now for each stream try to go to this time */
746 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
748 mp4_track_t *tk = &p_sys->track[i_track];
749 MP4_TrackSeek( p_demux, tk, i_date );
751 MP4_UpdateSeekpoint( p_demux );
755 /*****************************************************************************
757 *****************************************************************************/
758 static int Control( demux_t *p_demux, int i_query, va_list args )
760 demux_sys_t *p_sys = p_demux->p_sys;
767 case DEMUX_GET_POSITION:
768 pf = (double*)va_arg( args, double * );
769 if( p_sys->i_duration > 0 )
771 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
779 case DEMUX_SET_POSITION:
780 f = (double)va_arg( args, double );
781 if( p_sys->i_timescale > 0 )
783 i64 = (int64_t)( f * (double)1000000 *
784 (double)p_sys->i_duration /
785 (double)p_sys->i_timescale );
786 return Seek( p_demux, i64 );
788 else return VLC_SUCCESS;
791 pi64 = (int64_t*)va_arg( args, int64_t * );
792 if( p_sys->i_timescale > 0 )
794 *pi64 = (mtime_t)1000000 *
795 (mtime_t)p_sys->i_time /
796 (mtime_t)p_sys->i_timescale;
802 i64 = (int64_t)va_arg( args, int64_t );
803 return Seek( p_demux, i64 );
805 case DEMUX_GET_LENGTH:
806 pi64 = (int64_t*)va_arg( args, int64_t * );
807 if( p_sys->i_timescale > 0 )
809 *pi64 = (mtime_t)1000000 *
810 (mtime_t)p_sys->i_duration /
811 (mtime_t)p_sys->i_timescale;
817 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
822 vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
823 MP4_Box_t *p_0xa9xxx;
825 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
828 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
835 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
836 p_0xa9xxx = p_0xa9xxx->p_next )
839 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
842 /* FIXME FIXME: should convert from whatever the character
843 * encoding of MP4 meta data is to UTF-8. */
844 #define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
845 if( psz_utf ) { EnsureUTF8( psz_utf ); \
846 fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
848 /* XXX Becarefull p_udta can have box that are not 0xa9xx */
849 switch( p_0xa9xxx->i_type )
851 case FOURCC_0xa9nam: /* Full name */
852 SET( vlc_meta_SetTitle );
855 SET( vlc_meta_SetArtist );
858 SET( vlc_meta_SetArtist );
861 SET( vlc_meta_SetCopyright );
863 case FOURCC_0xa9day: /* Creation Date */
864 SET( vlc_meta_SetDate );
866 case FOURCC_0xa9des: /* Description */
867 SET( vlc_meta_SetDescription );
869 case FOURCC_0xa9gen: /* Genre */
870 SET( vlc_meta_SetGenre );
873 case FOURCC_0xa9alb: /* Album */
874 SET( vlc_meta_SetAlbum );
877 case FOURCC_0xa9trk: /* Track */
878 SET( vlc_meta_SetTracknum );
881 case FOURCC_0xa9cmt: /* Commment */
882 SET( vlc_meta_SetDescription );
885 case FOURCC_0xa9url: /* URL */
886 SET( vlc_meta_SetURL );
889 case FOURCC_0xa9enc: /* Encoded By */
890 SET( vlc_meta_SetEncodedBy );
894 case FOURCC_0xa9inf: /* Information */
895 case FOURCC_0xa9dir: /* Director */
896 case FOURCC_0xa9dis: /* Disclaimer */
897 case FOURCC_0xa9req: /* Requirements */
898 case FOURCC_0xa9fmt: /* Original Format */
899 case FOURCC_0xa9dsa: /* Display Source As */
900 case FOURCC_0xa9hst: /* Host Computer */
901 case FOURCC_0xa9prd: /* Producer */
902 case FOURCC_0xa9prf: /* Performers */
903 case FOURCC_0xa9ope: /* Original Performer */
904 case FOURCC_0xa9src: /* Providers Source Content */
905 case FOURCC_0xa9wrt: /* Writer */
906 case FOURCC_0xa9com: /* Composer */
907 case FOURCC_WLOC: /* Window Location */
908 /* TODO one day, but they aren't really meaningfull */
919 case DEMUX_GET_TITLE_INFO:
921 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
922 int *pi_int = (int*)va_arg( args, int* );
923 int *pi_title_offset = (int*)va_arg( args, int* );
924 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
926 if( !p_sys->p_title )
930 *ppp_title = malloc( sizeof( input_title_t**) );
931 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
932 *pi_title_offset = 0;
933 *pi_seekpoint_offset = 0;
936 case DEMUX_SET_TITLE:
938 const int i_title = (int)va_arg( args, int );
939 if( !p_sys->p_title || i_title != 0 )
943 case DEMUX_SET_SEEKPOINT:
945 const int i_seekpoint = (int)va_arg( args, int );
946 if( !p_sys->p_title )
948 return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
951 case DEMUX_SET_NEXT_DEMUX_TIME:
952 case DEMUX_SET_GROUP:
953 case DEMUX_HAS_UNSUPPORTED_META:
954 case DEMUX_GET_ATTACHMENTS:
958 msg_Warn( p_demux, "control query %u unimplemented", i_query );
963 /*****************************************************************************
964 * Close: frees unused data
965 *****************************************************************************/
966 static void Close ( vlc_object_t * p_this )
968 demux_t * p_demux = (demux_t *)p_this;
969 demux_sys_t *p_sys = p_demux->p_sys;
970 unsigned int i_track;
972 msg_Dbg( p_demux, "freeing all memory" );
974 MP4_BoxFree( p_demux->s, p_sys->p_root );
975 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
977 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
979 FREENULL( p_sys->track );
982 vlc_input_title_Delete( p_sys->p_title );
989 /****************************************************************************
990 * Local functions, specific to vlc
991 ****************************************************************************/
993 static void LoadChapterGpac( demux_t *p_demux, MP4_Box_t *p_chpl )
995 demux_sys_t *p_sys = p_demux->p_sys;
998 p_sys->p_title = vlc_input_title_New();
999 for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
1001 seekpoint_t *s = vlc_seekpoint_New();
1003 s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
1004 EnsureUTF8( s->psz_name );
1005 s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
1006 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1009 static void LoadChapterApple( demux_t *p_demux, mp4_track_t *tk )
1011 demux_sys_t *p_sys = p_demux->p_sys;
1013 for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1015 const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1016 const int64_t i_pts_delta = MP4_TrackGetPTSDelta( p_demux, tk );
1017 const unsigned int i_size = MP4_TrackSampleSize( tk );
1019 if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1022 const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
1023 const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1027 seekpoint_t *s = vlc_seekpoint_New();
1029 s->psz_name = strndup( &p_buffer[2], i_len );
1030 EnsureUTF8( s->psz_name );
1032 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1034 if( !p_sys->p_title )
1035 p_sys->p_title = vlc_input_title_New();
1036 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1039 if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1040 tk->chunk[tk->i_chunk].i_sample_count )
1044 static void LoadChapter( demux_t *p_demux )
1046 demux_sys_t *p_sys = p_demux->p_sys;
1049 if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
1051 LoadChapterGpac( p_demux, p_chpl );
1053 else if( p_sys->p_tref_chap )
1055 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1058 /* Load the first subtitle track like quicktime */
1059 for( i = 0; i < p_chap->i_entry_count; i++ )
1061 for( j = 0; j < p_sys->i_tracks; j++ )
1063 mp4_track_t *tk = &p_sys->track[j];
1064 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1065 tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
1068 if( j < p_sys->i_tracks )
1070 LoadChapterApple( p_demux, &p_sys->track[i] );
1077 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1078 static int TrackCreateChunksIndex( demux_t *p_demux,
1079 mp4_track_t *p_demux_track )
1081 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1084 unsigned int i_chunk;
1085 unsigned int i_index, i_last;
1087 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1088 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1089 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1091 return( VLC_EGENERIC );
1094 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1095 if( !p_demux_track->i_chunk_count )
1097 msg_Warn( p_demux, "no chunk defined" );
1098 return( VLC_EGENERIC );
1100 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1101 sizeof( mp4_chunk_t ) );
1102 if( p_demux_track->chunk == NULL )
1107 /* first we read chunk offset */
1108 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1110 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1112 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1114 ck->i_first_dts = 0;
1115 ck->p_sample_count_dts = NULL;
1116 ck->p_sample_delta_dts = NULL;
1117 ck->p_sample_count_pts = NULL;
1118 ck->p_sample_offset_pts = NULL;
1121 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1122 to be used for the sample XXX begin to 1
1123 We construct it begining at the end */
1124 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1125 i_index = p_stsc->data.p_stsc->i_entry_count;
1128 msg_Warn( p_demux, "cannot read chunk table or table empty" );
1129 return( VLC_EGENERIC );
1134 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1135 i_chunk < i_last; i_chunk++ )
1137 if( i_chunk >= p_demux_track->i_chunk_count )
1139 msg_Warn( p_demux, "corrupted chunk table" );
1140 return VLC_EGENERIC;
1143 p_demux_track->chunk[i_chunk].i_sample_description_index =
1144 p_stsc->data.p_stsc->i_sample_description_index[i_index];
1145 p_demux_track->chunk[i_chunk].i_sample_count =
1146 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1148 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1151 p_demux_track->chunk[0].i_sample_first = 0;
1152 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1154 p_demux_track->chunk[i_chunk].i_sample_first =
1155 p_demux_track->chunk[i_chunk-1].i_sample_first +
1156 p_demux_track->chunk[i_chunk-1].i_sample_count;
1159 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1160 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1165 static int TrackCreateSamplesIndex( demux_t *p_demux,
1166 mp4_track_t *p_demux_track )
1169 MP4_Box_data_stsz_t *stsz;
1170 MP4_Box_data_stts_t *stts;
1171 /* TODO use also stss and stsh table for seeking */
1172 /* FIXME use edit table */
1177 int64_t i_index_sample_used;
1182 * Gives the sample size for each samples. There is also a stz2 table
1183 * (compressed form) that we need to implement TODO */
1184 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1187 /* FIXME and stz2 */
1188 msg_Warn( p_demux, "cannot find STSZ box" );
1189 return VLC_EGENERIC;
1191 stsz = p_box->data.p_stsz;
1194 * Gives mapping between sample and decoding time
1196 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1199 msg_Warn( p_demux, "cannot find STTS box" );
1200 return VLC_EGENERIC;
1202 stts = p_box->data.p_stts;
1204 /* Use stsz table to create a sample number -> sample size table */
1205 p_demux_track->i_sample_count = stsz->i_sample_count;
1206 if( stsz->i_sample_size )
1208 /* 1: all sample have the same size, so no need to construct a table */
1209 p_demux_track->i_sample_size = stsz->i_sample_size;
1210 p_demux_track->p_sample_size = NULL;
1214 /* 2: each sample can have a different size */
1215 p_demux_track->i_sample_size = 0;
1216 p_demux_track->p_sample_size =
1217 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1218 if( p_demux_track->p_sample_size == NULL )
1221 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1223 p_demux_track->p_sample_size[i_sample] =
1224 stsz->i_entry_size[i_sample];
1228 /* Use stts table to create a sample number -> dts table.
1229 * XXX: if we don't want to waste too much memory, we can't expand
1230 * the box! so each chunk will contain an "extract" of this table
1231 * for fast research (problem with raw stream where a sample is sometime
1232 * just channels*bits_per_sample/8 */
1235 i_index = 0; i_index_sample_used = 0;
1236 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1238 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1239 int64_t i_entry, i_sample_count, i;
1242 ck->i_first_dts = i_last_dts;
1244 /* count how many entries are needed for this chunk
1245 * for p_sample_delta_dts and p_sample_count_dts */
1246 i_sample_count = ck->i_sample_count;
1249 while( i_sample_count > 0 )
1251 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1252 /* don't count already used sample in this entry */
1254 i_sample_count += i_index_sample_used;
1260 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1261 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1264 i_sample_count = ck->i_sample_count;
1265 for( i = 0; i < i_entry; i++ )
1270 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1272 i_used = __MIN( i_rest, i_sample_count );
1274 i_index_sample_used += i_used;
1275 i_sample_count -= i_used;
1277 ck->p_sample_count_dts[i] = i_used;
1278 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1280 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1282 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1285 i_index_sample_used = 0;
1291 * Gives the delta between decoding time (dts) and composition table (pts)
1293 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1296 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1298 msg_Warn( p_demux, "CTTS table" );
1300 /* Create pts-dts table per chunk */
1301 i_index = 0; i_index_sample_used = 0;
1302 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1304 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1305 int64_t i_entry, i_sample_count, i;
1307 /* count how many entries are needed for this chunk
1308 * for p_sample_delta_dts and p_sample_count_dts */
1309 i_sample_count = ck->i_sample_count;
1312 while( i_sample_count > 0 )
1314 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1316 /* don't count already used sample in this entry */
1318 i_sample_count += i_index_sample_used;
1324 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1325 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1328 i_sample_count = ck->i_sample_count;
1329 for( i = 0; i < i_entry; i++ )
1334 i_rest = ctts->i_sample_count[i_index] -
1335 i_index_sample_used;
1337 i_used = __MIN( i_rest, i_sample_count );
1339 i_index_sample_used += i_used;
1340 i_sample_count -= i_used;
1342 ck->p_sample_count_pts[i] = i_used;
1343 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1345 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1348 i_index_sample_used = 0;
1354 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:%"PRId64"s",
1355 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1356 i_last_dts / p_demux_track->i_timescale );
1363 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1365 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1366 unsigned int i_chunk, es_out_id_t **pp_es )
1368 MP4_Box_t *p_sample;
1375 if( !p_track->chunk[i_chunk].i_sample_description_index )
1377 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1378 p_track->i_track_ID );
1379 return VLC_EGENERIC;
1382 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1383 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1386 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1388 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1389 p_track->i_track_ID );
1390 return VLC_EGENERIC;
1393 p_track->p_sample = p_sample;
1395 if( p_track->fmt.i_cat == AUDIO_ES && ( p_track->i_sample_size == 1 || p_track->i_sample_size == 2 ) )
1397 MP4_Box_data_sample_soun_t *p_soun;
1399 p_soun = p_sample->data.p_sample_soun;
1401 if( p_soun->i_qt_version == 0 )
1403 switch( p_sample->i_type )
1405 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1406 p_soun->i_qt_version = 1;
1407 p_soun->i_sample_per_packet = 64;
1408 p_soun->i_bytes_per_packet = 34;
1409 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1410 p_soun->i_bytes_per_sample = 2;
1412 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1413 p_soun->i_qt_version = 1;
1414 p_soun->i_sample_per_packet = 6;
1415 p_soun->i_bytes_per_packet = 2;
1416 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1417 p_soun->i_bytes_per_sample = 2;
1419 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1420 p_soun->i_qt_version = 1;
1421 p_soun->i_sample_per_packet = 12;
1422 p_soun->i_bytes_per_packet = 2;
1423 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1424 p_soun->i_bytes_per_sample = 2;
1426 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1427 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1428 p_soun->i_samplesize = 8;
1430 case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
1431 case VLC_FOURCC( 'r', 'a', 'w', ' ' ):
1432 case VLC_FOURCC( 't', 'w', 'o', 's' ):
1433 case VLC_FOURCC( 's', 'o', 'w', 't' ):
1434 /* What would be the fun if you could trust the .mov */
1435 p_track->i_sample_size = ((p_soun->i_samplesize+7)/8) * p_soun->i_channelcount;
1442 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1444 p_soun->i_qt_version = 0;
1448 /* It's a little ugly but .. there are special cases */
1449 switch( p_sample->i_type )
1451 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1452 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1453 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1456 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1457 case( VLC_FOURCC( 'N', 'O', 'N', 'E' ) ):
1459 MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1461 if(p_soun && (p_soun->i_samplesize+7)/8 == 1 )
1462 p_track->fmt.i_codec = VLC_FOURCC( 'u', '8', ' ', ' ' );
1464 p_track->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1466 /* Buggy files workaround */
1467 if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1468 p_sample->data.p_sample_soun->i_sampleratehi) )
1470 MP4_Box_data_sample_soun_t *p_soun =
1471 p_sample->data.p_sample_soun;
1473 msg_Warn( p_demux, "i_timescale (%"PRIu64") != i_sampleratehi "
1474 "(%u), making both equal (report any problem).",
1475 p_track->i_timescale, p_soun->i_sampleratehi );
1477 if( p_soun->i_sampleratehi )
1478 p_track->i_timescale = p_soun->i_sampleratehi;
1480 p_soun->i_sampleratehi = p_track->i_timescale;
1485 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1486 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1489 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1490 case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1491 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1492 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1493 /* FIXME UTF-8 doesn't work here ? */
1494 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1497 case VLC_FOURCC('y','v','1','2'):
1498 p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1500 case VLC_FOURCC('y','u','v','2'):
1501 p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1504 case VLC_FOURCC('i','n','2','4'):
1505 /* in in24/in32 there's enda-atom to tell it's little-endian (if present) */
1506 if( ( MP4_BoxGet( p_sample, "wave/enda" ) ) ||
1507 ( MP4_BoxGet( p_sample, "enda" ) ) )
1509 p_track->fmt.i_codec = VLC_FOURCC('4','2','n','i');
1511 p_track->fmt.i_codec = p_sample->i_type;
1516 p_track->fmt.i_codec = p_sample->i_type;
1520 /* now see if esds is present and if so create a data packet
1521 with decoder_specific_info */
1522 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1523 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1524 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1525 ( p_esds->data.p_esds )&&
1528 /* First update information based on i_objectTypeIndication */
1529 switch( p_decconfig->i_objectTypeIndication )
1531 case( 0x20 ): /* MPEG4 VIDEO */
1532 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1535 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1542 case( 0x65): /* MPEG2 video */
1543 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1545 /* Theses are MPEG2-AAC */
1546 case( 0x66): /* main profile */
1547 case( 0x67): /* Low complexity profile */
1548 case( 0x68): /* Scaleable Sampling rate profile */
1549 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1551 /* true MPEG 2 audio */
1553 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1555 case( 0x6a): /* MPEG1 video */
1556 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1558 case( 0x6b): /* MPEG1 audio */
1559 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1561 case( 0x6c ): /* jpeg */
1562 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1566 case( 0xe0 ): /* NeroDigital: dvd subs */
1567 if( p_track->fmt.i_cat == SPU_ES )
1569 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1570 if( p_track->i_width > 0 )
1571 p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1572 if( p_track->i_height > 0 )
1573 p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1578 /* Unknown entry, but don't touch i_fourcc */
1580 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1581 p_decconfig->i_objectTypeIndication,
1582 p_track->i_track_ID );
1585 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1586 if( p_track->fmt.i_extra > 0 )
1588 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1589 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1590 p_track->fmt.i_extra );
1595 switch( p_sample->i_type )
1597 /* qt decoder, send the complete chunk */
1598 case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
1599 case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
1600 case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
1601 case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
1602 case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
1603 case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
1604 case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
1605 case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
1606 case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
1607 case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
1608 case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
1609 case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
1610 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1612 /* qt decoder, send the complete chunk */
1613 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1614 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1615 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1616 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1617 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1618 p_track->fmt.i_extra =
1619 p_sample->data.p_sample_vide->i_qt_image_description;
1620 if( p_track->fmt.i_extra > 0 )
1622 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1623 memcpy( p_track->fmt.p_extra,
1624 p_sample->data.p_sample_vide->p_qt_image_description,
1625 p_track->fmt.i_extra);
1628 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1629 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1630 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1631 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1632 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1633 p_track->fmt.i_extra =
1634 p_sample->data.p_sample_soun->i_qt_description;
1635 if( p_track->fmt.i_extra > 0 )
1637 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1638 memcpy( p_track->fmt.p_extra,
1639 p_sample->data.p_sample_soun->p_qt_description,
1640 p_track->fmt.i_extra);
1644 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1645 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1647 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1651 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1652 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1653 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1654 p_track->fmt.i_extra );
1658 msg_Err( p_demux, "missing avcC" );
1663 case VLC_FOURCC('m','s',0x00,0x02):
1664 case VLC_FOURCC('m','s',0x00,0x11):
1665 p_track->fmt.audio.i_blockalign = p_sample->data.p_sample_soun->i_bytes_per_frame;
1675 /* some last initialisation */
1676 switch( p_track->fmt.i_cat )
1679 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1680 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1681 p_track->fmt.video.i_bits_per_pixel =
1682 p_sample->data.p_sample_vide->i_depth;
1684 /* fall on display size */
1685 if( p_track->fmt.video.i_width <= 0 )
1686 p_track->fmt.video.i_width = p_track->i_width;
1687 if( p_track->fmt.video.i_height <= 0 )
1688 p_track->fmt.video.i_height = p_track->i_height;
1690 /* Find out apect ratio from display size */
1691 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1692 /* Work-around buggy muxed files */
1693 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1694 p_track->fmt.video.i_aspect =
1695 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1697 /* Support for cropping (eg. in H263 files) */
1698 p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1699 p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1702 p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1703 p_track->fmt.video.i_frame_rate_base = 1;
1705 if( p_track->fmt.video.i_frame_rate &&
1706 (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1707 p_box->data.p_stts->i_entry_count >= 1 )
1709 p_track->fmt.video.i_frame_rate_base =
1710 p_box->data.p_stts->i_sample_delta[0];
1716 p_track->fmt.audio.i_channels =
1717 p_sample->data.p_sample_soun->i_channelcount;
1718 p_track->fmt.audio.i_rate =
1719 p_sample->data.p_sample_soun->i_sampleratehi;
1720 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1721 p_sample->data.p_sample_soun->i_sampleratehi *
1722 p_sample->data.p_sample_soun->i_samplesize;
1723 p_track->fmt.audio.i_bitspersample =
1724 p_sample->data.p_sample_soun->i_samplesize;
1732 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1737 /* given a time it return sample/chunk
1738 * it also update elst field of the track
1740 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1741 int64_t i_start, uint32_t *pi_chunk,
1742 uint32_t *pi_sample )
1744 demux_sys_t *p_sys = p_demux->p_sys;
1747 unsigned int i_sample;
1748 unsigned int i_chunk;
1751 /* FIXME see if it's needed to check p_track->i_chunk_count */
1752 if( p_track->i_chunk_count == 0 )
1753 return( VLC_EGENERIC );
1755 /* handle elst (find the correct one) */
1756 MP4_TrackSetELST( p_demux, p_track, i_start );
1757 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1759 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1760 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1762 /* now calculate i_start for this elst */
1764 i_start -= p_track->i_elst_time * INT64_C(1000000) / p_sys->i_timescale;
1772 /* to track time scale */
1773 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1774 /* add elst offset */
1775 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1776 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1777 elst->i_media_time[p_track->i_elst] > 0 )
1779 i_start += elst->i_media_time[p_track->i_elst];
1782 msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
1783 "ms (track)", p_track->i_elst,
1784 i_mvt * 1000 / p_sys->i_timescale,
1785 i_start * 1000 / p_track->i_timescale );
1789 /* convert absolute time to in timescale unit */
1790 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1793 /* we start from sample 0/chunk 0, hope it won't take too much time */
1794 /* *** find good chunk *** */
1795 for( i_chunk = 0; ; i_chunk++ )
1797 if( i_chunk + 1 >= p_track->i_chunk_count )
1799 /* at the end and can't check if i_start in this chunk,
1800 it will be check while searching i_sample */
1801 i_chunk = p_track->i_chunk_count - 1;
1805 if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1806 (uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1812 /* *** find sample in the chunk *** */
1813 i_sample = p_track->chunk[i_chunk].i_sample_first;
1814 i_dts = p_track->chunk[i_chunk].i_first_dts;
1815 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1818 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1819 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1822 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1823 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1825 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1830 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1834 i_sample += ( i_start - i_dts ) /
1835 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1840 if( i_sample >= p_track->i_sample_count )
1842 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1843 "(seeking too far) chunk=%d sample=%d",
1844 p_track->i_track_ID, i_chunk, i_sample );
1845 return( VLC_EGENERIC );
1849 /* *** Try to find nearest sync points *** */
1850 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1852 unsigned int i_index;
1854 "track[Id 0x%x] using Sync Sample Box (stss)",
1855 p_track->i_track_ID );
1856 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1858 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1862 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1864 p_stss->data.p_stss->i_sample_number[i_index-1] );
1865 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1866 /* new i_sample is less than old so i_chunk can only decreased */
1867 while( i_chunk > 0 &&
1868 i_sample < p_track->chunk[i_chunk].i_sample_first )
1875 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1877 p_stss->data.p_stss->i_sample_number[i_index] );
1878 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1879 /* new i_sample is more than old so i_chunk can only increased */
1880 while( i_chunk < p_track->i_chunk_count - 1 &&
1881 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1882 p_track->chunk[i_chunk].i_sample_count )
1893 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1894 "Sample Box (stss)", p_track->i_track_ID );
1897 *pi_chunk = i_chunk;
1898 *pi_sample = i_sample;
1903 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1904 unsigned int i_chunk, unsigned int i_sample )
1906 bool b_reselect = false;
1908 /* now see if actual es is ok */
1909 if( (p_track->i_chunk >= p_track->i_chunk_count - 1) ||
1910 (p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1911 p_track->chunk[i_chunk].i_sample_description_index) )
1913 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1914 p_track->i_track_ID );
1916 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1917 p_track->p_es, &b_reselect );
1919 es_out_Del( p_demux->out, p_track->p_es );
1921 p_track->p_es = NULL;
1923 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1925 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1926 p_track->i_track_ID );
1928 p_track->b_ok = false;
1929 p_track->b_selected = false;
1930 return VLC_EGENERIC;
1934 /* select again the new decoder */
1937 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1940 p_track->i_chunk = i_chunk;
1941 p_track->i_sample = i_sample;
1943 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1946 /****************************************************************************
1948 ****************************************************************************
1949 * Parse track information and create all needed data to run a track
1950 * If it succeed b_ok is set to 1 else to 0
1951 ****************************************************************************/
1952 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1953 MP4_Box_t *p_box_trak )
1955 demux_sys_t *p_sys = p_demux->p_sys;
1957 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1958 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1973 /* hint track unsupported */
1975 /* set default value (-> track unusable) */
1976 p_track->b_ok = false;
1977 p_track->b_enable = false;
1978 p_track->b_selected = false;
1979 p_track->b_chapter = false;
1981 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1988 /* do we launch this track by default ? */
1990 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1992 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1993 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1994 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1998 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
2001 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
2002 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
2004 if( ( !p_mdhd )||( !p_hdlr ) )
2009 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
2010 if( !p_track->i_timescale )
2013 for( i = 0; i < 3; i++ )
2015 language[i] = p_mdhd->data.p_mdhd->i_language[i];
2019 switch( p_hdlr->data.p_hdlr->i_handler_type )
2021 case( FOURCC_soun ):
2022 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2026 p_track->fmt.i_cat = AUDIO_ES;
2029 case( FOURCC_vide ):
2030 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2034 p_track->fmt.i_cat = VIDEO_ES;
2037 case( FOURCC_text ):
2038 case( FOURCC_subp ):
2039 case( FOURCC_tx3g ):
2040 p_track->fmt.i_cat = SPU_ES;
2047 p_track->i_elst = 0;
2048 p_track->i_elst_time = 0;
2049 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2051 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
2054 msg_Warn( p_demux, "elst box found" );
2055 for( i = 0; i < elst->i_entry_count; i++ )
2057 msg_Dbg( p_demux, " - [%d] duration=%"PRId64"ms media time=%"PRId64
2058 "ms) rate=%d.%d", i,
2059 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2060 elst->i_media_time[i] >= 0 ?
2061 (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2063 elst->i_media_rate_integer[i],
2064 elst->i_media_rate_fraction[i] );
2071 p_dinf = MP4_BoxGet( p_minf, "dinf" );
2073 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2074 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2079 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
2080 p_track->b_drms = p_drms != NULL;
2081 p_track->p_drms = p_track->b_drms ?
2082 p_drms->data.p_sample_soun->p_drms : NULL;
2085 if( strcmp( language, "```" ) && strcmp( language, "und" ) )
2087 p_track->fmt.psz_language = strdup( language );
2090 p_udta = MP4_BoxGet( p_box_trak, "udta" );
2093 MP4_Box_t *p_0xa9xxx;
2094 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
2095 p_0xa9xxx = p_0xa9xxx->p_next )
2097 switch( p_0xa9xxx->i_type )
2099 case FOURCC_0xa9nam:
2100 p_track->fmt.psz_description =
2101 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
2107 /* Create chunk index table and sample index table */
2108 if( TrackCreateChunksIndex( p_demux,p_track ) ||
2109 TrackCreateSamplesIndex( p_demux, p_track ) )
2111 return; /* cannot create chunks index */
2114 p_track->i_chunk = 0;
2115 p_track->i_sample = 0;
2117 /* Mark chapter only track */
2118 if( !p_track->b_enable && p_sys->p_tref_chap )
2120 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2123 for( i = 0; i < p_chap->i_entry_count; i++ )
2125 if( p_track->i_track_ID == p_chap->i_track_ID[i] )
2127 p_track->b_chapter = true;
2134 p_track->p_es = NULL;
2135 if( TrackCreateES( p_demux,
2136 p_track, p_track->i_chunk,
2137 p_track->b_chapter ? NULL : &p_track->p_es ) )
2139 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2140 p_track->i_track_ID );
2143 p_track->b_ok = true;
2147 for( i = 0; i < p_track->i_chunk_count; i++ )
2149 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2150 i, p_track->chunk[i].i_sample_count,
2151 p_track->chunk[i].i_first_dts );
2158 /****************************************************************************
2160 ****************************************************************************
2161 * Destroy a track created by MP4_TrackCreate.
2162 ****************************************************************************/
2163 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
2165 unsigned int i_chunk;
2167 p_track->b_ok = false;
2168 p_track->b_enable = false;
2169 p_track->b_selected = false;
2171 es_format_Clean( &p_track->fmt );
2173 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2175 if( p_track->chunk )
2177 FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2178 FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2180 FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2181 FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2184 FREENULL( p_track->chunk );
2186 if( !p_track->i_sample_size )
2188 FREENULL( p_track->p_sample_size );
2192 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2195 if( !p_track->b_ok || p_track->b_chapter )
2197 return VLC_EGENERIC;
2200 if( p_track->b_selected )
2202 msg_Warn( p_demux, "track[Id 0x%x] already selected",
2203 p_track->i_track_ID );
2207 return MP4_TrackSeek( p_demux, p_track, i_start );
2210 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2212 if( !p_track->b_ok || p_track->b_chapter )
2217 if( !p_track->b_selected )
2219 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2220 p_track->i_track_ID );
2225 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2226 p_track->p_es, false );
2229 p_track->b_selected = false;
2232 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2238 if( !p_track->b_ok || p_track->b_chapter )
2239 return VLC_EGENERIC;
2241 p_track->b_selected = false;
2243 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2244 &i_chunk, &i_sample ) )
2246 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2247 p_track->i_track_ID );
2248 return VLC_EGENERIC;
2251 p_track->b_selected = true;
2253 if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2256 p_track->b_selected = true;
2258 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2259 p_track->p_es, i_start );
2262 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2267 * 3 types: for audio
2270 #define QT_V0_MAX_SAMPLES 1024
2271 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2274 MP4_Box_data_sample_soun_t *p_soun;
2276 if( p_track->i_sample_size == 0 )
2278 /* most simple case */
2279 return p_track->p_sample_size[p_track->i_sample];
2281 if( p_track->fmt.i_cat != AUDIO_ES )
2283 return p_track->i_sample_size;
2286 p_soun = p_track->p_sample->data.p_sample_soun;
2288 if( p_soun->i_qt_version == 1 )
2290 i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2291 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2293 else if( p_track->i_sample_size > 256 )
2295 /* We do that so we don't read too much data
2296 * (in this case we are likely dealing with compressed data) */
2297 i_size = p_track->i_sample_size;
2301 /* Read a bunch of samples at once */
2302 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2303 ( p_track->i_sample -
2304 p_track->chunk[p_track->i_chunk].i_sample_first );
2306 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2307 i_size = i_samples * p_track->i_sample_size;
2310 //fprintf( stderr, "size=%d\n", i_size );
2314 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2316 unsigned int i_sample;
2319 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2321 if( p_track->i_sample_size )
2323 MP4_Box_data_sample_soun_t *p_soun =
2324 p_track->p_sample->data.p_sample_soun;
2326 if( p_soun->i_qt_version == 0 )
2328 i_pos += ( p_track->i_sample -
2329 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2330 p_track->i_sample_size;
2334 /* we read chunk by chunk */
2340 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2341 i_sample < p_track->i_sample; i_sample++ )
2343 i_pos += p_track->p_sample_size[i_sample];
2350 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2352 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2354 MP4_Box_data_sample_soun_t *p_soun;
2356 p_soun = p_track->p_sample->data.p_sample_soun;
2358 if( p_soun->i_qt_version == 1 )
2360 /* chunk by chunk */
2362 p_track->chunk[p_track->i_chunk].i_sample_first +
2363 p_track->chunk[p_track->i_chunk].i_sample_count;
2365 else if( p_track->i_sample_size > 256 )
2367 /* We do that so we don't read too much data
2368 * (in this case we are likely dealing with compressed data) */
2369 p_track->i_sample += 1;
2374 p_track->i_sample += QT_V0_MAX_SAMPLES;
2375 if( p_track->i_sample >
2376 p_track->chunk[p_track->i_chunk].i_sample_first +
2377 p_track->chunk[p_track->i_chunk].i_sample_count )
2380 p_track->chunk[p_track->i_chunk].i_sample_first +
2381 p_track->chunk[p_track->i_chunk].i_sample_count;
2387 p_track->i_sample++;
2390 if( p_track->i_sample >= p_track->i_sample_count )
2391 return VLC_EGENERIC;
2393 /* Have we changed chunk ? */
2394 if( p_track->i_sample >=
2395 p_track->chunk[p_track->i_chunk].i_sample_first +
2396 p_track->chunk[p_track->i_chunk].i_sample_count )
2398 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2399 p_track->i_sample ) )
2401 msg_Warn( p_demux, "track[0x%x] will be disabled "
2402 "(cannot restart decoder)", p_track->i_track_ID );
2403 MP4_TrackUnselect( p_demux, p_track );
2404 return VLC_EGENERIC;
2408 /* Have we changed elst */
2409 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2411 demux_sys_t *p_sys = p_demux->p_sys;
2412 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2413 uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2414 p_sys->i_timescale / (int64_t)1000000;
2416 if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2417 i_mvt >= p_track->i_elst_time +
2418 elst->i_segment_duration[p_track->i_elst] )
2420 MP4_TrackSetELST( p_demux, p_track,
2421 MP4_TrackGetDTS( p_demux, p_track ) );
2428 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2431 demux_sys_t *p_sys = p_demux->p_sys;
2432 int i_elst_last = tk->i_elst;
2434 /* handle elst (find the correct one) */
2436 tk->i_elst_time = 0;
2437 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2439 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2440 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2442 for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2444 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2446 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2450 tk->i_elst_time += i_dur;
2453 if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2455 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2456 tk->i_elst = elst->i_entry_count - 1;
2457 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2460 if( elst->i_media_time[tk->i_elst] < 0 )
2463 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2466 if( i_elst_last != tk->i_elst )
2468 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );