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" );
366 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
368 input_thread_t * p_input = vlc_object_find( p_demux, VLC_OBJECT_INPUT, FIND_PARENT );
369 input_item_t * p_current = input_GetItem( p_input );
370 p_current->i_type = ITEM_TYPE_PLAYLIST;
372 for( i = 0; i < i_count; i++ )
374 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
378 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
382 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
384 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
385 psz_ref, (char*)&i_ref_type );
387 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
389 if( strstr( psz_ref, "qt5gateQT" ) )
391 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
394 if( !strncmp( psz_ref, "http://", 7 ) ||
395 !strncmp( psz_ref, "rtsp://", 7 ) )
402 char *psz_path = strdup( p_demux->psz_path );
403 char *end = strrchr( psz_path, '/' );
404 if( end ) end[1] = '\0';
405 else *psz_path = '\0';
407 asprintf( &psz_absolute, "%s://%s%s",
408 p_demux->psz_access, psz_path, psz_ref );
411 psz_ref = psz_absolute;
414 input_item_t *p_input;
415 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
416 p_input = input_ItemNewExt( p_demux, psz_ref, NULL,
418 input_ItemCopyOptions( p_current, p_input );
419 input_ItemAddSubItem( p_current, p_input );
420 vlc_gc_decref( p_input );
424 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
425 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
429 vlc_object_release( p_input );
432 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
436 msg_Err( p_demux, "cannot find /moov/mvhd" );
441 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
442 p_demux->pf_demux = DemuxRef;
448 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
449 if( p_sys->i_timescale == 0 )
451 msg_Err( p_this, "bad timescale" );
454 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
457 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
459 msg_Err( p_demux, "cannot find any /moov/trak" );
462 msg_Dbg( p_demux, "found %d track%c",
464 p_sys->i_tracks ? 's':' ' );
466 /* allocate memory */
467 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
468 if( p_sys->track == NULL )
470 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
472 /* Search the first chap reference (like quicktime) */
473 p_sys->p_tref_chap = NULL;
474 for( i = 0; i < p_sys->i_tracks; i++ )
476 MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
477 MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
478 if( !p_chap || p_chap->data.p_tref_generic->i_entry_count <= 0 )
481 p_sys->p_tref_chap = p_chap;
485 /* now process each track and extract all usefull information */
486 for( i = 0; i < p_sys->i_tracks; i++ )
488 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
489 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
491 if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
494 switch( p_sys->track[i].fmt.i_cat )
503 psz_cat = "subtitle";
511 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
512 p_sys->track[i].i_track_ID, psz_cat,
513 p_sys->track[i].b_enable ? "enable":"disable",
514 p_sys->track[i].fmt.psz_language ?
515 p_sys->track[i].fmt.psz_language : "undef" );
517 else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
519 msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
520 p_sys->track[i].i_track_ID,
521 p_sys->track[i].fmt.psz_language ?
522 p_sys->track[i].fmt.psz_language : "undef" );
526 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
527 p_sys->track[i].i_track_ID );
532 LoadChapter( p_demux );
539 MP4_BoxFree( p_demux->s, p_sys->p_root );
545 /*****************************************************************************
546 * Demux: read packet and send them to decoders
547 *****************************************************************************
548 * TODO check for newly selected track (ie audio upt to now )
549 *****************************************************************************/
550 static int Demux( demux_t *p_demux )
552 demux_sys_t *p_sys = p_demux->p_sys;
553 unsigned int i_track;
556 unsigned int i_track_selected;
558 /* check for newly selected/unselected track */
559 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
562 mp4_track_t *tk = &p_sys->track[i_track];
565 if( !tk->b_ok || tk->b_chapter ||
566 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
571 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
573 if( tk->b_selected && !b )
575 MP4_TrackUnselect( p_demux, tk );
577 else if( !tk->b_selected && b)
579 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
588 if( i_track_selected <= 0 )
590 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
591 if( p_sys->i_timescale > 0 )
593 int64_t i_length = (mtime_t)1000000 *
594 (mtime_t)p_sys->i_duration /
595 (mtime_t)p_sys->i_timescale;
596 if( MP4_GetMoviePTS( p_sys ) >= i_length )
601 msg_Warn( p_demux, "no track selected, exiting..." );
606 MP4_UpdateSeekpoint( p_demux );
608 /* first wait for the good time to read a packet */
609 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
611 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
613 /* we will read 100ms for each stream so ...*/
614 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
616 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
618 mp4_track_t *tk = &p_sys->track[i_track];
620 if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
623 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
626 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
627 MP4_TrackGetDTS( p_demux, tk ),
628 MP4_GetMoviePTS( p_sys ) );
631 if( MP4_TrackSampleSize( tk ) > 0 )
637 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
639 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
641 MP4_TrackUnselect( p_demux, tk );
647 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
649 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
651 MP4_TrackUnselect( p_demux, tk );
655 if( tk->b_drms && tk->p_drms )
657 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
660 else if( tk->fmt.i_cat == SPU_ES )
662 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
663 p_block->i_buffer >= 2 )
665 uint16_t i_size = GetWBE( p_block->p_buffer );
667 if( i_size + 2 <= p_block->i_buffer )
670 /* remove the length field, and append a '\0' */
671 memmove( &p_block->p_buffer[0],
672 &p_block->p_buffer[2], i_size );
673 p_block->p_buffer[i_size] = '\0';
674 p_block->i_buffer = i_size + 1;
676 /* convert \r -> \n */
677 while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
685 p_block->i_buffer = 0;
690 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
692 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
694 p_block->i_pts = p_block->i_dts + i_delta;
695 else if( tk->fmt.i_cat != VIDEO_ES )
696 p_block->i_pts = p_block->i_dts;
700 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
701 es_out_Send( p_demux->out, tk->p_es, p_block );
705 if( MP4_TrackNextSample( p_demux, tk ) )
713 static void MP4_UpdateSeekpoint( demux_t *p_demux )
715 demux_sys_t *p_sys = p_demux->p_sys;
718 if( !p_sys->p_title )
720 i_time = MP4_GetMoviePTS( p_sys );
721 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
723 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
728 if( i != p_demux->info.i_seekpoint && i >= 0 )
730 p_demux->info.i_seekpoint = i;
731 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
734 /*****************************************************************************
735 * Seek: Got to i_date
736 ******************************************************************************/
737 static int Seek( demux_t *p_demux, mtime_t i_date )
739 demux_sys_t *p_sys = p_demux->p_sys;
740 unsigned int i_track;
742 /* First update update global time */
743 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
744 p_sys->i_pcr = i_date;
746 /* Now for each stream try to go to this time */
747 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
749 mp4_track_t *tk = &p_sys->track[i_track];
750 MP4_TrackSeek( p_demux, tk, i_date );
752 MP4_UpdateSeekpoint( p_demux );
756 /*****************************************************************************
758 *****************************************************************************/
759 static int Control( demux_t *p_demux, int i_query, va_list args )
761 demux_sys_t *p_sys = p_demux->p_sys;
768 case DEMUX_GET_POSITION:
769 pf = (double*)va_arg( args, double * );
770 if( p_sys->i_duration > 0 )
772 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
780 case DEMUX_SET_POSITION:
781 f = (double)va_arg( args, double );
782 if( p_sys->i_timescale > 0 )
784 i64 = (int64_t)( f * (double)1000000 *
785 (double)p_sys->i_duration /
786 (double)p_sys->i_timescale );
787 return Seek( p_demux, i64 );
789 else return VLC_SUCCESS;
792 pi64 = (int64_t*)va_arg( args, int64_t * );
793 if( p_sys->i_timescale > 0 )
795 *pi64 = (mtime_t)1000000 *
796 (mtime_t)p_sys->i_time /
797 (mtime_t)p_sys->i_timescale;
803 i64 = (int64_t)va_arg( args, int64_t );
804 return Seek( p_demux, i64 );
806 case DEMUX_GET_LENGTH:
807 pi64 = (int64_t*)va_arg( args, int64_t * );
808 if( p_sys->i_timescale > 0 )
810 *pi64 = (mtime_t)1000000 *
811 (mtime_t)p_sys->i_duration /
812 (mtime_t)p_sys->i_timescale;
818 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
823 vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
824 MP4_Box_t *p_0xa9xxx;
826 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
829 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
836 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
837 p_0xa9xxx = p_0xa9xxx->p_next )
840 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
843 /* FIXME FIXME: should convert from whatever the character
844 * encoding of MP4 meta data is to UTF-8. */
845 #define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
846 if( psz_utf ) { EnsureUTF8( psz_utf ); \
847 fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
849 /* XXX Becarefull p_udta can have box that are not 0xa9xx */
850 switch( p_0xa9xxx->i_type )
852 case FOURCC_0xa9nam: /* Full name */
853 SET( vlc_meta_SetTitle );
856 SET( vlc_meta_SetArtist );
859 SET( vlc_meta_SetArtist );
862 SET( vlc_meta_SetCopyright );
864 case FOURCC_0xa9day: /* Creation Date */
865 SET( vlc_meta_SetDate );
867 case FOURCC_0xa9des: /* Description */
868 SET( vlc_meta_SetDescription );
870 case FOURCC_0xa9gen: /* Genre */
871 SET( vlc_meta_SetGenre );
874 case FOURCC_0xa9alb: /* Album */
875 SET( vlc_meta_SetAlbum );
878 case FOURCC_0xa9trk: /* Track */
879 SET( vlc_meta_SetTracknum );
882 case FOURCC_0xa9cmt: /* Commment */
883 SET( vlc_meta_SetDescription );
886 case FOURCC_0xa9url: /* URL */
887 SET( vlc_meta_SetURL );
890 case FOURCC_0xa9enc: /* Encoded By */
891 SET( vlc_meta_SetEncodedBy );
895 case FOURCC_0xa9inf: /* Information */
896 case FOURCC_0xa9dir: /* Director */
897 case FOURCC_0xa9dis: /* Disclaimer */
898 case FOURCC_0xa9req: /* Requirements */
899 case FOURCC_0xa9fmt: /* Original Format */
900 case FOURCC_0xa9dsa: /* Display Source As */
901 case FOURCC_0xa9hst: /* Host Computer */
902 case FOURCC_0xa9prd: /* Producer */
903 case FOURCC_0xa9prf: /* Performers */
904 case FOURCC_0xa9ope: /* Original Performer */
905 case FOURCC_0xa9src: /* Providers Source Content */
906 case FOURCC_0xa9wrt: /* Writer */
907 case FOURCC_0xa9com: /* Composer */
908 case FOURCC_WLOC: /* Window Location */
909 /* TODO one day, but they aren't really meaningfull */
920 case DEMUX_GET_TITLE_INFO:
922 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
923 int *pi_int = (int*)va_arg( args, int* );
924 int *pi_title_offset = (int*)va_arg( args, int* );
925 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
927 if( !p_sys->p_title )
931 *ppp_title = malloc( sizeof( input_title_t**) );
932 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
933 *pi_title_offset = 0;
934 *pi_seekpoint_offset = 0;
937 case DEMUX_SET_TITLE:
939 const int i_title = (int)va_arg( args, int );
940 if( !p_sys->p_title || i_title != 0 )
944 case DEMUX_SET_SEEKPOINT:
946 const int i_seekpoint = (int)va_arg( args, int );
947 if( !p_sys->p_title )
949 return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
952 case DEMUX_SET_NEXT_DEMUX_TIME:
953 case DEMUX_SET_GROUP:
954 case DEMUX_HAS_UNSUPPORTED_META:
955 case DEMUX_GET_ATTACHMENTS:
959 msg_Warn( p_demux, "control query %u unimplemented", i_query );
964 /*****************************************************************************
965 * Close: frees unused data
966 *****************************************************************************/
967 static void Close ( vlc_object_t * p_this )
969 demux_t * p_demux = (demux_t *)p_this;
970 demux_sys_t *p_sys = p_demux->p_sys;
971 unsigned int i_track;
973 msg_Dbg( p_demux, "freeing all memory" );
975 MP4_BoxFree( p_demux->s, p_sys->p_root );
976 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
978 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
980 FREENULL( p_sys->track );
983 vlc_input_title_Delete( p_sys->p_title );
990 /****************************************************************************
991 * Local functions, specific to vlc
992 ****************************************************************************/
994 static void LoadChapterGpac( demux_t *p_demux, MP4_Box_t *p_chpl )
996 demux_sys_t *p_sys = p_demux->p_sys;
999 p_sys->p_title = vlc_input_title_New();
1000 for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
1002 seekpoint_t *s = vlc_seekpoint_New();
1004 s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
1005 EnsureUTF8( s->psz_name );
1006 s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
1007 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1010 static void LoadChapterApple( demux_t *p_demux, mp4_track_t *tk )
1012 demux_sys_t *p_sys = p_demux->p_sys;
1014 for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1016 const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1017 const int64_t i_pts_delta = MP4_TrackGetPTSDelta( p_demux, tk );
1018 const unsigned int i_size = MP4_TrackSampleSize( tk );
1020 if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1023 const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
1024 const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1028 seekpoint_t *s = vlc_seekpoint_New();
1030 s->psz_name = strndup( &p_buffer[2], i_len );
1031 EnsureUTF8( s->psz_name );
1033 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1035 if( !p_sys->p_title )
1036 p_sys->p_title = vlc_input_title_New();
1037 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1040 if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1041 tk->chunk[tk->i_chunk].i_sample_count )
1045 static void LoadChapter( demux_t *p_demux )
1047 demux_sys_t *p_sys = p_demux->p_sys;
1050 if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
1052 LoadChapterGpac( p_demux, p_chpl );
1054 else if( p_sys->p_tref_chap )
1056 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1059 /* Load the first subtitle track like quicktime */
1060 for( i = 0; i < p_chap->i_entry_count; i++ )
1062 for( j = 0; j < p_sys->i_tracks; j++ )
1064 mp4_track_t *tk = &p_sys->track[j];
1065 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1066 tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
1069 if( j < p_sys->i_tracks )
1071 LoadChapterApple( p_demux, &p_sys->track[i] );
1078 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1079 static int TrackCreateChunksIndex( demux_t *p_demux,
1080 mp4_track_t *p_demux_track )
1082 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1085 unsigned int i_chunk;
1086 unsigned int i_index, i_last;
1088 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1089 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1090 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1092 return( VLC_EGENERIC );
1095 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1096 if( !p_demux_track->i_chunk_count )
1098 msg_Warn( p_demux, "no chunk defined" );
1099 return( VLC_EGENERIC );
1101 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1102 sizeof( mp4_chunk_t ) );
1103 if( p_demux_track->chunk == NULL )
1108 /* first we read chunk offset */
1109 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1111 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1113 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1115 ck->i_first_dts = 0;
1116 ck->p_sample_count_dts = NULL;
1117 ck->p_sample_delta_dts = NULL;
1118 ck->p_sample_count_pts = NULL;
1119 ck->p_sample_offset_pts = NULL;
1122 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1123 to be used for the sample XXX begin to 1
1124 We construct it begining at the end */
1125 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1126 i_index = p_stsc->data.p_stsc->i_entry_count;
1129 msg_Warn( p_demux, "cannot read chunk table or table empty" );
1130 return( VLC_EGENERIC );
1135 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1136 i_chunk < i_last; i_chunk++ )
1138 if( i_chunk >= p_demux_track->i_chunk_count )
1140 msg_Warn( p_demux, "corrupted chunk table" );
1141 return VLC_EGENERIC;
1144 p_demux_track->chunk[i_chunk].i_sample_description_index =
1145 p_stsc->data.p_stsc->i_sample_description_index[i_index];
1146 p_demux_track->chunk[i_chunk].i_sample_count =
1147 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1149 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1152 p_demux_track->chunk[0].i_sample_first = 0;
1153 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1155 p_demux_track->chunk[i_chunk].i_sample_first =
1156 p_demux_track->chunk[i_chunk-1].i_sample_first +
1157 p_demux_track->chunk[i_chunk-1].i_sample_count;
1160 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1161 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1166 static int TrackCreateSamplesIndex( demux_t *p_demux,
1167 mp4_track_t *p_demux_track )
1170 MP4_Box_data_stsz_t *stsz;
1171 MP4_Box_data_stts_t *stts;
1172 /* TODO use also stss and stsh table for seeking */
1173 /* FIXME use edit table */
1178 int64_t i_index_sample_used;
1183 * Gives the sample size for each samples. There is also a stz2 table
1184 * (compressed form) that we need to implement TODO */
1185 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1188 /* FIXME and stz2 */
1189 msg_Warn( p_demux, "cannot find STSZ box" );
1190 return VLC_EGENERIC;
1192 stsz = p_box->data.p_stsz;
1195 * Gives mapping between sample and decoding time
1197 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1200 msg_Warn( p_demux, "cannot find STTS box" );
1201 return VLC_EGENERIC;
1203 stts = p_box->data.p_stts;
1205 /* Use stsz table to create a sample number -> sample size table */
1206 p_demux_track->i_sample_count = stsz->i_sample_count;
1207 if( stsz->i_sample_size )
1209 /* 1: all sample have the same size, so no need to construct a table */
1210 p_demux_track->i_sample_size = stsz->i_sample_size;
1211 p_demux_track->p_sample_size = NULL;
1215 /* 2: each sample can have a different size */
1216 p_demux_track->i_sample_size = 0;
1217 p_demux_track->p_sample_size =
1218 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1219 if( p_demux_track->p_sample_size == NULL )
1222 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1224 p_demux_track->p_sample_size[i_sample] =
1225 stsz->i_entry_size[i_sample];
1229 /* Use stts table to create a sample number -> dts table.
1230 * XXX: if we don't want to waste too much memory, we can't expand
1231 * the box! so each chunk will contain an "extract" of this table
1232 * for fast research (problem with raw stream where a sample is sometime
1233 * just channels*bits_per_sample/8 */
1236 i_index = 0; i_index_sample_used = 0;
1237 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1239 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1240 int64_t i_entry, i_sample_count, i;
1243 ck->i_first_dts = i_last_dts;
1245 /* count how many entries are needed for this chunk
1246 * for p_sample_delta_dts and p_sample_count_dts */
1247 i_sample_count = ck->i_sample_count;
1250 while( i_sample_count > 0 )
1252 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1253 /* don't count already used sample in this entry */
1255 i_sample_count += i_index_sample_used;
1261 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1262 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1265 i_sample_count = ck->i_sample_count;
1266 for( i = 0; i < i_entry; i++ )
1271 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1273 i_used = __MIN( i_rest, i_sample_count );
1275 i_index_sample_used += i_used;
1276 i_sample_count -= i_used;
1278 ck->p_sample_count_dts[i] = i_used;
1279 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1281 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1283 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1286 i_index_sample_used = 0;
1292 * Gives the delta between decoding time (dts) and composition table (pts)
1294 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1297 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1299 msg_Warn( p_demux, "CTTS table" );
1301 /* Create pts-dts table per chunk */
1302 i_index = 0; i_index_sample_used = 0;
1303 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1305 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1306 int64_t i_entry, i_sample_count, i;
1308 /* count how many entries are needed for this chunk
1309 * for p_sample_delta_dts and p_sample_count_dts */
1310 i_sample_count = ck->i_sample_count;
1313 while( i_sample_count > 0 )
1315 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1317 /* don't count already used sample in this entry */
1319 i_sample_count += i_index_sample_used;
1325 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1326 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1329 i_sample_count = ck->i_sample_count;
1330 for( i = 0; i < i_entry; i++ )
1335 i_rest = ctts->i_sample_count[i_index] -
1336 i_index_sample_used;
1338 i_used = __MIN( i_rest, i_sample_count );
1340 i_index_sample_used += i_used;
1341 i_sample_count -= i_used;
1343 ck->p_sample_count_pts[i] = i_used;
1344 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1346 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1349 i_index_sample_used = 0;
1355 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:%"PRId64"s",
1356 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1357 i_last_dts / p_demux_track->i_timescale );
1364 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1366 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1367 unsigned int i_chunk, es_out_id_t **pp_es )
1369 MP4_Box_t *p_sample;
1376 if( !p_track->chunk[i_chunk].i_sample_description_index )
1378 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1379 p_track->i_track_ID );
1380 return VLC_EGENERIC;
1383 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1384 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1387 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1389 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1390 p_track->i_track_ID );
1391 return VLC_EGENERIC;
1394 p_track->p_sample = p_sample;
1396 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1398 MP4_Box_data_sample_soun_t *p_soun;
1400 p_soun = p_sample->data.p_sample_soun;
1402 if( p_soun->i_qt_version == 0 )
1404 switch( p_sample->i_type )
1406 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1407 p_soun->i_qt_version = 1;
1408 p_soun->i_sample_per_packet = 64;
1409 p_soun->i_bytes_per_packet = 34;
1410 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1411 p_soun->i_bytes_per_sample = 2;
1413 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1414 p_soun->i_qt_version = 1;
1415 p_soun->i_sample_per_packet = 6;
1416 p_soun->i_bytes_per_packet = 2;
1417 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1418 p_soun->i_bytes_per_sample = 2;
1420 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1421 p_soun->i_qt_version = 1;
1422 p_soun->i_sample_per_packet = 12;
1423 p_soun->i_bytes_per_packet = 2;
1424 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1425 p_soun->i_bytes_per_sample = 2;
1427 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1428 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1429 p_soun->i_samplesize = 8;
1436 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1438 p_soun->i_qt_version = 0;
1443 /* It's a little ugly but .. there are special cases */
1444 switch( p_sample->i_type )
1446 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1447 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1448 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1451 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1452 p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1454 /* Buggy files workaround */
1455 if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1456 p_sample->data.p_sample_soun->i_sampleratehi) )
1458 MP4_Box_data_sample_soun_t *p_soun =
1459 p_sample->data.p_sample_soun;
1461 msg_Warn( p_demux, "i_timescale (%"PRIu64") != i_sampleratehi "
1462 "(%u), making both equal (report any problem).",
1463 p_track->i_timescale, p_soun->i_sampleratehi );
1465 if( p_soun->i_sampleratehi )
1466 p_track->i_timescale = p_soun->i_sampleratehi;
1468 p_soun->i_sampleratehi = p_track->i_timescale;
1472 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1473 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1476 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1477 case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1478 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1479 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1480 /* FIXME UTF-8 doesn't work here ? */
1481 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1484 case VLC_FOURCC('y','v','1','2'):
1485 p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1487 case VLC_FOURCC('y','u','v','2'):
1488 p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1491 case VLC_FOURCC('i','n','2','4'):
1492 /* in in24/in32 there's enda-atom to tell it's little-endian (if present) */
1493 if( ( MP4_BoxGet( p_sample, "wave/enda" ) ) ||
1494 ( MP4_BoxGet( p_sample, "enda" ) ) )
1496 p_track->fmt.i_codec = VLC_FOURCC('4','2','n','i');
1498 p_track->fmt.i_codec = p_sample->i_type;
1503 p_track->fmt.i_codec = p_sample->i_type;
1507 /* now see if esds is present and if so create a data packet
1508 with decoder_specific_info */
1509 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1510 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1511 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1512 ( p_esds->data.p_esds )&&
1515 /* First update information based on i_objectTypeIndication */
1516 switch( p_decconfig->i_objectTypeIndication )
1518 case( 0x20 ): /* MPEG4 VIDEO */
1519 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1522 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1529 case( 0x65): /* MPEG2 video */
1530 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1532 /* Theses are MPEG2-AAC */
1533 case( 0x66): /* main profile */
1534 case( 0x67): /* Low complexity profile */
1535 case( 0x68): /* Scaleable Sampling rate profile */
1536 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1538 /* true MPEG 2 audio */
1540 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1542 case( 0x6a): /* MPEG1 video */
1543 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1545 case( 0x6b): /* MPEG1 audio */
1546 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1548 case( 0x6c ): /* jpeg */
1549 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1553 case( 0xe0 ): /* NeroDigital: dvd subs */
1554 if( p_track->fmt.i_cat == SPU_ES )
1556 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1557 if( p_track->i_width > 0 )
1558 p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1559 if( p_track->i_height > 0 )
1560 p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1565 /* Unknown entry, but don't touch i_fourcc */
1567 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1568 p_decconfig->i_objectTypeIndication,
1569 p_track->i_track_ID );
1572 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1573 if( p_track->fmt.i_extra > 0 )
1575 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1576 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1577 p_track->fmt.i_extra );
1582 switch( p_sample->i_type )
1584 /* qt decoder, send the complete chunk */
1585 case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
1586 case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
1587 case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
1588 case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
1589 case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
1590 case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
1591 case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
1592 case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
1593 case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
1594 case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
1595 case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
1596 case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
1597 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1599 /* qt decoder, send the complete chunk */
1600 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1601 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1602 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1603 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1604 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1605 p_track->fmt.i_extra =
1606 p_sample->data.p_sample_vide->i_qt_image_description;
1607 if( p_track->fmt.i_extra > 0 )
1609 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1610 memcpy( p_track->fmt.p_extra,
1611 p_sample->data.p_sample_vide->p_qt_image_description,
1612 p_track->fmt.i_extra);
1615 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1616 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1617 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1618 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1619 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1620 p_track->fmt.i_extra =
1621 p_sample->data.p_sample_soun->i_qt_description;
1622 if( p_track->fmt.i_extra > 0 )
1624 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1625 memcpy( p_track->fmt.p_extra,
1626 p_sample->data.p_sample_soun->p_qt_description,
1627 p_track->fmt.i_extra);
1631 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1632 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1634 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1638 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1639 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1640 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1641 p_track->fmt.i_extra );
1645 msg_Err( p_demux, "missing avcC" );
1657 /* some last initialisation */
1658 switch( p_track->fmt.i_cat )
1661 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1662 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1663 p_track->fmt.video.i_bits_per_pixel =
1664 p_sample->data.p_sample_vide->i_depth;
1666 /* fall on display size */
1667 if( p_track->fmt.video.i_width <= 0 )
1668 p_track->fmt.video.i_width = p_track->i_width;
1669 if( p_track->fmt.video.i_height <= 0 )
1670 p_track->fmt.video.i_height = p_track->i_height;
1672 /* Find out apect ratio from display size */
1673 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1674 /* Work-around buggy muxed files */
1675 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1676 p_track->fmt.video.i_aspect =
1677 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1679 /* Support for cropping (eg. in H263 files) */
1680 p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1681 p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1684 p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1685 p_track->fmt.video.i_frame_rate_base = 1;
1687 if( p_track->fmt.video.i_frame_rate &&
1688 (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1689 p_box->data.p_stts->i_entry_count >= 1 )
1691 p_track->fmt.video.i_frame_rate_base =
1692 p_box->data.p_stts->i_sample_delta[0];
1698 p_track->fmt.audio.i_channels =
1699 p_sample->data.p_sample_soun->i_channelcount;
1700 p_track->fmt.audio.i_rate =
1701 p_sample->data.p_sample_soun->i_sampleratehi;
1702 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1703 p_sample->data.p_sample_soun->i_sampleratehi *
1704 p_sample->data.p_sample_soun->i_samplesize;
1705 p_track->fmt.audio.i_bitspersample =
1706 p_sample->data.p_sample_soun->i_samplesize;
1714 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1719 /* given a time it return sample/chunk
1720 * it also update elst field of the track
1722 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1723 int64_t i_start, uint32_t *pi_chunk,
1724 uint32_t *pi_sample )
1726 demux_sys_t *p_sys = p_demux->p_sys;
1729 unsigned int i_sample;
1730 unsigned int i_chunk;
1733 /* FIXME see if it's needed to check p_track->i_chunk_count */
1734 if( p_track->i_chunk_count == 0 )
1735 return( VLC_EGENERIC );
1737 /* handle elst (find the correct one) */
1738 MP4_TrackSetELST( p_demux, p_track, i_start );
1739 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1741 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1742 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1744 /* now calculate i_start for this elst */
1746 i_start -= p_track->i_elst_time * INT64_C(1000000) / p_sys->i_timescale;
1754 /* to track time scale */
1755 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1756 /* add elst offset */
1757 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1758 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1759 elst->i_media_time[p_track->i_elst] > 0 )
1761 i_start += elst->i_media_time[p_track->i_elst];
1764 msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
1765 "ms (track)", p_track->i_elst,
1766 i_mvt * 1000 / p_sys->i_timescale,
1767 i_start * 1000 / p_track->i_timescale );
1771 /* convert absolute time to in timescale unit */
1772 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1775 /* we start from sample 0/chunk 0, hope it won't take too much time */
1776 /* *** find good chunk *** */
1777 for( i_chunk = 0; ; i_chunk++ )
1779 if( i_chunk + 1 >= p_track->i_chunk_count )
1781 /* at the end and can't check if i_start in this chunk,
1782 it will be check while searching i_sample */
1783 i_chunk = p_track->i_chunk_count - 1;
1787 if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1788 (uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1794 /* *** find sample in the chunk *** */
1795 i_sample = p_track->chunk[i_chunk].i_sample_first;
1796 i_dts = p_track->chunk[i_chunk].i_first_dts;
1797 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1800 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1801 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1804 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1805 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1807 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1812 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1816 i_sample += ( i_start - i_dts ) /
1817 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1822 if( i_sample >= p_track->i_sample_count )
1824 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1825 "(seeking too far) chunk=%d sample=%d",
1826 p_track->i_track_ID, i_chunk, i_sample );
1827 return( VLC_EGENERIC );
1831 /* *** Try to find nearest sync points *** */
1832 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1834 unsigned int i_index;
1836 "track[Id 0x%x] using Sync Sample Box (stss)",
1837 p_track->i_track_ID );
1838 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1840 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1844 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1846 p_stss->data.p_stss->i_sample_number[i_index-1] );
1847 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1848 /* new i_sample is less than old so i_chunk can only decreased */
1849 while( i_chunk > 0 &&
1850 i_sample < p_track->chunk[i_chunk].i_sample_first )
1857 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1859 p_stss->data.p_stss->i_sample_number[i_index] );
1860 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1861 /* new i_sample is more than old so i_chunk can only increased */
1862 while( i_chunk < p_track->i_chunk_count - 1 &&
1863 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1864 p_track->chunk[i_chunk].i_sample_count )
1875 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1876 "Sample Box (stss)", p_track->i_track_ID );
1879 *pi_chunk = i_chunk;
1880 *pi_sample = i_sample;
1885 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1886 unsigned int i_chunk, unsigned int i_sample )
1888 bool b_reselect = false;
1890 /* now see if actual es is ok */
1891 if( (p_track->i_chunk >= p_track->i_chunk_count - 1) ||
1892 (p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1893 p_track->chunk[i_chunk].i_sample_description_index) )
1895 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1896 p_track->i_track_ID );
1898 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1899 p_track->p_es, &b_reselect );
1901 es_out_Del( p_demux->out, p_track->p_es );
1903 p_track->p_es = NULL;
1905 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1907 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1908 p_track->i_track_ID );
1910 p_track->b_ok = false;
1911 p_track->b_selected = false;
1912 return VLC_EGENERIC;
1916 /* select again the new decoder */
1919 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1922 p_track->i_chunk = i_chunk;
1923 p_track->i_sample = i_sample;
1925 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1928 /****************************************************************************
1930 ****************************************************************************
1931 * Parse track information and create all needed data to run a track
1932 * If it succeed b_ok is set to 1 else to 0
1933 ****************************************************************************/
1934 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1935 MP4_Box_t *p_box_trak )
1937 demux_sys_t *p_sys = p_demux->p_sys;
1939 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1940 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1955 /* hint track unsupported */
1957 /* set default value (-> track unusable) */
1958 p_track->b_ok = false;
1959 p_track->b_enable = false;
1960 p_track->b_selected = false;
1961 p_track->b_chapter = false;
1963 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1970 /* do we launch this track by default ? */
1972 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1974 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1975 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1976 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1980 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1983 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1984 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1986 if( ( !p_mdhd )||( !p_hdlr ) )
1991 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1992 if( !p_track->i_timescale )
1995 for( i = 0; i < 3; i++ )
1997 language[i] = p_mdhd->data.p_mdhd->i_language[i];
2001 switch( p_hdlr->data.p_hdlr->i_handler_type )
2003 case( FOURCC_soun ):
2004 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2008 p_track->fmt.i_cat = AUDIO_ES;
2011 case( FOURCC_vide ):
2012 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2016 p_track->fmt.i_cat = VIDEO_ES;
2019 case( FOURCC_text ):
2020 case( FOURCC_subp ):
2021 case( FOURCC_tx3g ):
2022 p_track->fmt.i_cat = SPU_ES;
2029 p_track->i_elst = 0;
2030 p_track->i_elst_time = 0;
2031 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2033 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
2036 msg_Warn( p_demux, "elst box found" );
2037 for( i = 0; i < elst->i_entry_count; i++ )
2039 msg_Dbg( p_demux, " - [%d] duration=%"PRId64"ms media time=%"PRId64
2040 "ms) rate=%d.%d", i,
2041 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2042 elst->i_media_time[i] >= 0 ?
2043 (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2045 elst->i_media_rate_integer[i],
2046 elst->i_media_rate_fraction[i] );
2053 p_dinf = MP4_BoxGet( p_minf, "dinf" );
2055 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2056 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2061 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
2062 p_track->b_drms = p_drms != NULL;
2063 p_track->p_drms = p_track->b_drms ?
2064 p_drms->data.p_sample_soun->p_drms : NULL;
2067 if( strcmp( language, "```" ) && strcmp( language, "und" ) )
2069 p_track->fmt.psz_language = strdup( language );
2072 p_udta = MP4_BoxGet( p_box_trak, "udta" );
2075 MP4_Box_t *p_0xa9xxx;
2076 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
2077 p_0xa9xxx = p_0xa9xxx->p_next )
2079 switch( p_0xa9xxx->i_type )
2081 case FOURCC_0xa9nam:
2082 p_track->fmt.psz_description =
2083 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
2089 /* Create chunk index table and sample index table */
2090 if( TrackCreateChunksIndex( p_demux,p_track ) ||
2091 TrackCreateSamplesIndex( p_demux, p_track ) )
2093 return; /* cannot create chunks index */
2096 p_track->i_chunk = 0;
2097 p_track->i_sample = 0;
2099 /* Mark chapter only track */
2100 if( !p_track->b_enable && p_sys->p_tref_chap )
2102 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2105 for( i = 0; i < p_chap->i_entry_count; i++ )
2107 if( p_track->i_track_ID == p_chap->i_track_ID[i] )
2109 p_track->b_chapter = true;
2116 p_track->p_es = NULL;
2117 if( TrackCreateES( p_demux,
2118 p_track, p_track->i_chunk,
2119 p_track->b_chapter ? NULL : &p_track->p_es ) )
2121 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2122 p_track->i_track_ID );
2125 p_track->b_ok = true;
2129 for( i = 0; i < p_track->i_chunk_count; i++ )
2131 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2132 i, p_track->chunk[i].i_sample_count,
2133 p_track->chunk[i].i_first_dts );
2140 /****************************************************************************
2142 ****************************************************************************
2143 * Destroy a track created by MP4_TrackCreate.
2144 ****************************************************************************/
2145 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
2147 unsigned int i_chunk;
2149 p_track->b_ok = false;
2150 p_track->b_enable = false;
2151 p_track->b_selected = false;
2153 es_format_Clean( &p_track->fmt );
2155 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2157 if( p_track->chunk )
2159 FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2160 FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2162 FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2163 FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2166 FREENULL( p_track->chunk );
2168 if( !p_track->i_sample_size )
2170 FREENULL( p_track->p_sample_size );
2174 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2177 if( !p_track->b_ok || p_track->b_chapter )
2179 return VLC_EGENERIC;
2182 if( p_track->b_selected )
2184 msg_Warn( p_demux, "track[Id 0x%x] already selected",
2185 p_track->i_track_ID );
2189 return MP4_TrackSeek( p_demux, p_track, i_start );
2192 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2194 if( !p_track->b_ok || p_track->b_chapter )
2199 if( !p_track->b_selected )
2201 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2202 p_track->i_track_ID );
2207 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2208 p_track->p_es, false );
2211 p_track->b_selected = false;
2214 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2220 if( !p_track->b_ok || p_track->b_chapter )
2221 return VLC_EGENERIC;
2223 p_track->b_selected = false;
2225 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2226 &i_chunk, &i_sample ) )
2228 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2229 p_track->i_track_ID );
2230 return VLC_EGENERIC;
2233 p_track->b_selected = true;
2235 if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2238 p_track->b_selected = true;
2240 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2241 p_track->p_es, i_start );
2244 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2249 * 3 types: for audio
2252 #define QT_V0_MAX_SAMPLES 1024
2253 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2256 MP4_Box_data_sample_soun_t *p_soun;
2258 if( p_track->i_sample_size == 0 )
2260 /* most simple case */
2261 return p_track->p_sample_size[p_track->i_sample];
2263 if( p_track->fmt.i_cat != AUDIO_ES )
2265 return p_track->i_sample_size;
2268 p_soun = p_track->p_sample->data.p_sample_soun;
2270 if( p_soun->i_qt_version == 1 )
2272 i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2273 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2275 else if( p_track->i_sample_size > 256 )
2277 /* We do that so we don't read too much data
2278 * (in this case we are likely dealing with compressed data) */
2279 i_size = p_track->i_sample_size;
2283 /* Read a bunch of samples at once */
2284 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2285 ( p_track->i_sample -
2286 p_track->chunk[p_track->i_chunk].i_sample_first );
2288 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2289 i_size = i_samples * p_track->i_sample_size;
2292 //fprintf( stderr, "size=%d\n", i_size );
2296 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2298 unsigned int i_sample;
2301 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2303 if( p_track->i_sample_size )
2305 MP4_Box_data_sample_soun_t *p_soun =
2306 p_track->p_sample->data.p_sample_soun;
2308 if( p_soun->i_qt_version == 0 )
2310 i_pos += ( p_track->i_sample -
2311 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2312 p_track->i_sample_size;
2316 /* we read chunk by chunk */
2322 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2323 i_sample < p_track->i_sample; i_sample++ )
2325 i_pos += p_track->p_sample_size[i_sample];
2332 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2334 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2336 MP4_Box_data_sample_soun_t *p_soun;
2338 p_soun = p_track->p_sample->data.p_sample_soun;
2340 if( p_soun->i_qt_version == 1 )
2342 /* chunk by chunk */
2344 p_track->chunk[p_track->i_chunk].i_sample_first +
2345 p_track->chunk[p_track->i_chunk].i_sample_count;
2347 else if( p_track->i_sample_size > 256 )
2349 /* We do that so we don't read too much data
2350 * (in this case we are likely dealing with compressed data) */
2351 p_track->i_sample += 1;
2356 p_track->i_sample += QT_V0_MAX_SAMPLES;
2357 if( p_track->i_sample >
2358 p_track->chunk[p_track->i_chunk].i_sample_first +
2359 p_track->chunk[p_track->i_chunk].i_sample_count )
2362 p_track->chunk[p_track->i_chunk].i_sample_first +
2363 p_track->chunk[p_track->i_chunk].i_sample_count;
2369 p_track->i_sample++;
2372 if( p_track->i_sample >= p_track->i_sample_count )
2373 return VLC_EGENERIC;
2375 /* Have we changed chunk ? */
2376 if( p_track->i_sample >=
2377 p_track->chunk[p_track->i_chunk].i_sample_first +
2378 p_track->chunk[p_track->i_chunk].i_sample_count )
2380 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2381 p_track->i_sample ) )
2383 msg_Warn( p_demux, "track[0x%x] will be disabled "
2384 "(cannot restart decoder)", p_track->i_track_ID );
2385 MP4_TrackUnselect( p_demux, p_track );
2386 return VLC_EGENERIC;
2390 /* Have we changed elst */
2391 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2393 demux_sys_t *p_sys = p_demux->p_sys;
2394 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2395 uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2396 p_sys->i_timescale / (int64_t)1000000;
2398 if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2399 i_mvt >= p_track->i_elst_time +
2400 elst->i_segment_duration[p_track->i_elst] )
2402 MP4_TrackSetELST( p_demux, p_track,
2403 MP4_TrackGetDTS( p_demux, p_track ) );
2410 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2413 demux_sys_t *p_sys = p_demux->p_sys;
2414 int i_elst_last = tk->i_elst;
2416 /* handle elst (find the correct one) */
2418 tk->i_elst_time = 0;
2419 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2421 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2422 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2424 for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2426 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2428 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2432 tk->i_elst_time += i_dur;
2435 if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2437 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2438 tk->i_elst = elst->i_entry_count - 1;
2439 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2442 if( elst->i_media_time[tk->i_elst] < 0 )
2445 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2448 if( i_elst_last != tk->i_elst )
2450 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );