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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
26 #include <stdlib.h> /* malloc(), free() */
29 #include <vlc/input.h>
30 #include <vlc_playlist.h>
38 #define uint64_t int64_t
41 /*****************************************************************************
43 *****************************************************************************/
44 static int Open ( vlc_object_t * );
45 static void Close( vlc_object_t * );
48 set_category( CAT_INPUT );
49 set_subcategory( SUBCAT_INPUT_DEMUX );
50 set_description( _("MP4 stream demuxer") );
51 set_capability( "demux2", 242 );
52 set_callbacks( Open, Close );
55 /*****************************************************************************
57 *****************************************************************************/
58 static int Demux ( demux_t * );
59 static int DemuxRef( demux_t *p_demux ){ return 0;}
60 static int Seek ( demux_t *, mtime_t );
61 static int Control ( demux_t *, int, va_list );
63 /* Contain all information about a chunk */
66 uint64_t i_offset; /* absolute position of this chunk in the file */
67 uint32_t i_sample_description_index; /* index for SampleEntry to use */
68 uint32_t i_sample_count; /* how many samples in this chunk */
69 uint32_t i_sample_first; /* index of the first sample in this chunk */
71 /* now provide way to calculate pts, dts, and offset without to
72 much memory and with fast acces */
74 /* with this we can calculate dts/pts without waste memory */
76 uint32_t *p_sample_count_dts;
77 uint32_t *p_sample_delta_dts; /* dts delta */
79 uint32_t *p_sample_count_pts;
80 int32_t *p_sample_offset_pts; /* pts-dts */
82 /* TODO if needed add pts
83 but quickly *add* support for edts and seeking */
87 /* Contain all needed information for read all track with vlc */
90 int i_track_ID; /* this should be unique */
92 int b_ok; /* The track is usable */
93 int b_enable; /* is the trak enable by default */
94 vlc_bool_t b_selected; /* is the trak being played */
99 /* display size only ! */
103 /* more internal data */
104 uint64_t i_timescale; /* time scale for this track only */
107 int i_elst; /* current elst */
108 int64_t i_elst_time; /* current elst start time (in movie time scale)*/
109 MP4_Box_t *p_elst; /* elst (could be NULL) */
111 /* give the next sample to read, i_chunk is to find quickly where
112 the sample is located */
113 uint32_t i_sample; /* next sample to read */
114 uint32_t i_chunk; /* chunk where next sample is stored */
115 /* total count of chunk and sample */
116 uint32_t i_chunk_count;
117 uint32_t i_sample_count;
119 mp4_chunk_t *chunk; /* always defined for each chunk */
121 /* sample size, p_sample_size defined only if i_sample_size == 0
122 else i_sample_size is size for all sample */
123 uint32_t i_sample_size;
124 uint32_t *p_sample_size; /* XXX perhaps add file offset if take
125 too much time to do sumations each time*/
127 MP4_Box_t *p_stbl; /* will contain all timing information */
128 MP4_Box_t *p_stsd; /* will contain all data to initialize decoder */
129 MP4_Box_t *p_sample;/* point on actual sdsd */
139 MP4_Box_t *p_root; /* container for the whole file */
143 uint64_t i_time; /* time position of the presentation
144 * in movie timescale */
145 uint64_t i_timescale; /* movie time scale */
146 uint64_t i_duration; /* movie duration */
147 unsigned int i_tracks; /* number of tracks */
148 mp4_track_t *track; /* array of track */
151 /*****************************************************************************
152 * Declaration of local function
153 *****************************************************************************/
154 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *);
155 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
157 static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
158 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
160 static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
162 static uint64_t MP4_TrackGetPos ( mp4_track_t * );
163 static int MP4_TrackSampleSize( mp4_track_t * );
164 static int MP4_TrackNextSample( demux_t *, mp4_track_t * );
165 static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
167 /* Return time in µs of a track */
168 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
170 #define chunk p_track->chunk[p_track->i_chunk]
172 unsigned int i_index = 0;
173 unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
174 int64_t i_dts = chunk.i_first_dts;
176 while( i_sample > 0 )
178 if( i_sample > chunk.p_sample_count_dts[i_index] )
180 i_dts += chunk.p_sample_count_dts[i_index] *
181 chunk.p_sample_delta_dts[i_index];
182 i_sample -= chunk.p_sample_count_dts[i_index];
187 i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
195 /* now handle elst */
196 if( p_track->p_elst )
198 demux_sys_t *p_sys = p_demux->p_sys;
199 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
201 /* convert to offset */
202 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
203 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
204 elst->i_media_time[p_track->i_elst] > 0 )
206 i_dts -= elst->i_media_time[p_track->i_elst];
209 /* add i_elst_time */
210 i_dts += p_track->i_elst_time * p_track->i_timescale /
213 if( i_dts < 0 ) i_dts = 0;
216 return I64C(1000000) * i_dts / p_track->i_timescale;
219 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
221 mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
222 unsigned int i_index = 0;
223 unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
225 if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
228 for( i_index = 0;; i_index++ )
230 if( i_sample < ck->p_sample_count_pts[i_index] )
231 return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
232 (int64_t)p_track->i_timescale;
234 i_sample -= ck->p_sample_count_pts[i_index];
238 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
240 return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
243 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
245 /*****************************************************************************
246 * Open: check file and initializes MP4 structures
247 *****************************************************************************/
248 static int Open( vlc_object_t * p_this )
250 demux_t *p_demux = (demux_t *)p_this;
261 vlc_bool_t b_seekable;
263 /* A little test to see if it could be a mp4 */
264 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
266 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
277 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
284 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
287 msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
291 /*Set exported functions */
292 p_demux->pf_demux = Demux;
293 p_demux->pf_control = Control;
295 /* create our structure that will contains all data */
296 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
297 memset( p_sys, 0, sizeof( demux_sys_t ) );
299 /* Now load all boxes ( except raw data ) */
300 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
302 msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
306 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
308 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
310 switch( p_ftyp->data.p_ftyp->i_major_brand )
314 "ISO Media file (isom) version %d.",
315 p_ftyp->data.p_ftyp->i_minor_version );
319 "unrecognized major file specification (%4.4s).",
320 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
326 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
329 /* the file need to have one moov box */
330 if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
332 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
336 msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
339 /* we have a free box as a moov, rename it */
340 p_foov->i_type = FOURCC_moov;
343 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
345 playlist_t *p_playlist;
346 playlist_item_t *p_item;
347 int i_count = MP4_BoxCount( p_rmra, "rmda" );
349 vlc_bool_t b_play = VLC_FALSE;
351 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
354 (playlist_t *)vlc_object_find( p_demux,
359 p_item = playlist_LockItemGetByInput( p_playlist,
360 ((input_thread_t *)p_demux->p_parent)->input.p_item );
361 playlist_ItemToNode( p_playlist, p_item );
363 for( i = 0; i < i_count; i++ )
365 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
369 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
373 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
375 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
376 psz_ref, (char*)&i_ref_type );
378 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
380 if( strstr( psz_ref, "qt5gateQT" ) )
382 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
385 if( !strncmp( psz_ref, "http://", 7 ) ||
386 !strncmp( psz_ref, "rtsp://", 7 ) )
388 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
391 playlist_item_t *p_child =
392 playlist_ItemNew( p_playlist,
396 playlist_NodeAddItem( p_playlist, p_child,
397 p_item->pp_parents[0]->i_view,
398 p_item, PLAYLIST_APPEND,
400 playlist_CopyParents( p_item, p_child );
407 /* msg dbg relative ? */
408 char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
409 char *end = strrchr( p_demux->psz_path, '/' );
413 int i_len = end + 1 - p_demux->psz_path;
415 strcpy( psz_absolute, p_demux->psz_access );
416 strcat( psz_absolute, "://" );
417 strncat( psz_absolute, p_demux->psz_path, i_len);
421 strcpy( psz_absolute, "" );
423 strcat( psz_absolute, psz_ref );
424 msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
427 playlist_item_t *p_child =
428 playlist_ItemNew( p_playlist,
433 playlist_NodeAddItem( p_playlist, p_child,
434 p_item->pp_parents[0]->i_view,
435 p_item, PLAYLIST_APPEND,
437 playlist_CopyParents( p_item, p_child );
445 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
446 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
449 if( b_play == VLC_TRUE )
451 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
452 p_playlist->status.i_view,
453 p_playlist->status.p_item, NULL );
455 vlc_object_release( p_playlist );
459 msg_Err( p_demux, "can't find playlist" );
463 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
467 msg_Err( p_demux, "cannot find /moov/mvhd" );
472 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
473 p_demux->pf_demux = DemuxRef;
479 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
480 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
483 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
485 msg_Err( p_demux, "cannot find any /moov/trak" );
488 msg_Dbg( p_demux, "find %d track%c",
490 p_sys->i_tracks ? 's':' ' );
492 /* allocate memory */
493 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
494 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
496 /* now process each track and extract all usefull information */
497 for( i = 0; i < p_sys->i_tracks; i++ )
499 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
500 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
502 if( p_sys->track[i].b_ok )
505 switch( p_sys->track[i].fmt.i_cat )
514 psz_cat = "subtitle";
522 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
523 p_sys->track[i].i_track_ID, psz_cat,
524 p_sys->track[i].b_enable ? "enable":"disable",
525 p_sys->track[i].fmt.psz_language ?
526 p_sys->track[i].fmt.psz_language : "undef" );
530 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
531 p_sys->track[i].i_track_ID );
540 MP4_BoxFree( p_demux->s, p_sys->p_root );
546 /*****************************************************************************
547 * Demux: read packet and send them to decoders
548 *****************************************************************************
549 * TODO check for newly selected track (ie audio upt to now )
550 *****************************************************************************/
551 static int Demux( demux_t *p_demux )
553 demux_sys_t *p_sys = p_demux->p_sys;
554 unsigned int i_track;
557 unsigned int i_track_selected;
559 /* check for newly selected/unselected track */
560 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
563 mp4_track_t *tk = &p_sys->track[i_track];
567 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
572 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
574 if( tk->b_selected && !b )
576 MP4_TrackUnselect( p_demux, tk );
578 else if( !tk->b_selected && b)
580 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
589 if( i_track_selected <= 0 )
591 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
592 if( p_sys->i_timescale > 0 )
594 int64_t i_length = (mtime_t)1000000 *
595 (mtime_t)p_sys->i_duration /
596 (mtime_t)p_sys->i_timescale;
597 if( MP4_GetMoviePTS( p_sys ) >= i_length )
602 msg_Warn( p_demux, "no track selected, exiting..." );
606 /* first wait for the good time to read a packet */
607 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
609 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
611 /* we will read 100ms for each stream so ...*/
612 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
614 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
616 mp4_track_t *tk = &p_sys->track[i_track];
618 if( !tk->b_ok || !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( 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 ) )
714 /*****************************************************************************
715 * Seek: Got to i_date
716 ******************************************************************************/
717 static int Seek( demux_t *p_demux, mtime_t i_date )
719 demux_sys_t *p_sys = p_demux->p_sys;
720 unsigned int i_track;
722 /* First update update global time */
723 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
724 p_sys->i_pcr = i_date;
726 /* Now for each stream try to go to this time */
727 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
729 mp4_track_t *tk = &p_sys->track[i_track];
730 MP4_TrackSeek( p_demux, tk, i_date );
735 /*****************************************************************************
737 *****************************************************************************/
738 static int Control( demux_t *p_demux, int i_query, va_list args )
740 demux_sys_t *p_sys = p_demux->p_sys;
747 case DEMUX_GET_POSITION:
748 pf = (double*)va_arg( args, double * );
749 if( p_sys->i_duration > 0 )
751 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
759 case DEMUX_SET_POSITION:
760 f = (double)va_arg( args, double );
761 if( p_sys->i_timescale > 0 )
763 i64 = (int64_t)( f * (double)1000000 *
764 (double)p_sys->i_duration /
765 (double)p_sys->i_timescale );
766 return Seek( p_demux, i64 );
768 else return VLC_SUCCESS;
771 pi64 = (int64_t*)va_arg( args, int64_t * );
772 if( p_sys->i_timescale > 0 )
774 *pi64 = (mtime_t)1000000 *
775 (mtime_t)p_sys->i_time /
776 (mtime_t)p_sys->i_timescale;
782 i64 = (int64_t)va_arg( args, int64_t );
783 return Seek( p_demux, i64 );
785 case DEMUX_GET_LENGTH:
786 pi64 = (int64_t*)va_arg( args, int64_t * );
787 if( p_sys->i_timescale > 0 )
789 *pi64 = (mtime_t)1000000 *
790 (mtime_t)p_sys->i_duration /
791 (mtime_t)p_sys->i_timescale;
797 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
802 vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
804 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
805 MP4_Box_t *p_0xa9xxx;
810 *pp_meta = meta = vlc_meta_New();
811 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
812 p_0xa9xxx = p_0xa9xxx->p_next )
814 switch( p_0xa9xxx->i_type )
816 case FOURCC_0xa9nam: /* Full name */
817 vlc_meta_Add( meta, VLC_META_TITLE,
818 p_0xa9xxx->data.p_0xa9xxx->psz_text );
821 vlc_meta_Add( meta, VLC_META_AUTHOR,
822 p_0xa9xxx->data.p_0xa9xxx->psz_text );
825 vlc_meta_Add( meta, VLC_META_ARTIST,
826 p_0xa9xxx->data.p_0xa9xxx->psz_text );
829 vlc_meta_Add( meta, VLC_META_COPYRIGHT,
830 p_0xa9xxx->data.p_0xa9xxx->psz_text );
832 case FOURCC_0xa9day: /* Creation Date */
833 vlc_meta_Add( meta, VLC_META_DATE,
834 p_0xa9xxx->data.p_0xa9xxx->psz_text );
836 case FOURCC_0xa9des: /* Description */
837 vlc_meta_Add( meta, VLC_META_DESCRIPTION,
838 p_0xa9xxx->data.p_0xa9xxx->psz_text );
840 case FOURCC_0xa9gen: /* Genre */
841 vlc_meta_Add( meta, VLC_META_GENRE,
842 p_0xa9xxx->data.p_0xa9xxx->psz_text );
846 case FOURCC_0xa9inf: /* Information */
847 case FOURCC_0xa9alb: /* Album */
848 case FOURCC_0xa9dir: /* Director */
849 case FOURCC_0xa9dis: /* Disclaimer */
850 case FOURCC_0xa9enc: /* Encoded By */
851 case FOURCC_0xa9trk: /* Track */
852 case FOURCC_0xa9cmt: /* Commment */
853 case FOURCC_0xa9url: /* URL */
854 case FOURCC_0xa9req: /* Requirements */
855 case FOURCC_0xa9fmt: /* Original Format */
856 case FOURCC_0xa9dsa: /* Display Source As */
857 case FOURCC_0xa9hst: /* Host Computer */
858 case FOURCC_0xa9prd: /* Producer */
859 case FOURCC_0xa9prf: /* Performers */
860 case FOURCC_0xa9ope: /* Original Performer */
861 case FOURCC_0xa9src: /* Providers Source Content */
862 case FOURCC_0xa9wrt: /* Writer */
863 case FOURCC_0xa9com: /* Composer */
864 case FOURCC_WLOC: /* Window Location */
865 /* TODO one day, but they aren't really meaningfull */
875 case DEMUX_GET_TITLE_INFO:
876 case DEMUX_SET_NEXT_DEMUX_TIME:
877 case DEMUX_SET_GROUP:
881 msg_Warn( p_demux, "control query unimplemented !!!" );
886 /*****************************************************************************
887 * Close: frees unused data
888 *****************************************************************************/
889 static void Close ( vlc_object_t * p_this )
891 unsigned int i_track;
892 demux_t * p_demux = (demux_t *)p_this;
893 demux_sys_t *p_sys = p_demux->p_sys;
895 msg_Dbg( p_demux, "freeing all memory" );
897 MP4_BoxFree( p_demux->s, p_sys->p_root );
898 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
900 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
902 FREE( p_sys->track );
909 /****************************************************************************
910 * Local functions, specific to vlc
911 ****************************************************************************/
913 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
914 static int TrackCreateChunksIndex( demux_t *p_demux,
915 mp4_track_t *p_demux_track )
917 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
920 unsigned int i_chunk;
921 unsigned int i_index, i_last;
923 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
924 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
925 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
927 return( VLC_EGENERIC );
930 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
931 if( !p_demux_track->i_chunk_count )
933 msg_Warn( p_demux, "no chunk defined" );
934 return( VLC_EGENERIC );
936 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
937 sizeof( mp4_chunk_t ) );
939 /* first we read chunk offset */
940 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
942 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
944 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
947 ck->p_sample_count_dts = NULL;
948 ck->p_sample_delta_dts = NULL;
949 ck->p_sample_count_pts = NULL;
950 ck->p_sample_offset_pts = NULL;
953 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
954 to be used for the sample XXX begin to 1
955 We construct it begining at the end */
956 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
957 i_index = p_stsc->data.p_stsc->i_entry_count;
960 msg_Warn( p_demux, "cannot read chunk table or table empty" );
961 return( VLC_EGENERIC );
966 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
967 i_chunk < i_last; i_chunk++ )
969 p_demux_track->chunk[i_chunk].i_sample_description_index =
970 p_stsc->data.p_stsc->i_sample_description_index[i_index];
971 p_demux_track->chunk[i_chunk].i_sample_count =
972 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
974 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
977 p_demux_track->chunk[0].i_sample_first = 0;
978 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
980 p_demux_track->chunk[i_chunk].i_sample_first =
981 p_demux_track->chunk[i_chunk-1].i_sample_first +
982 p_demux_track->chunk[i_chunk-1].i_sample_count;
985 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
986 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
991 static int TrackCreateSamplesIndex( demux_t *p_demux,
992 mp4_track_t *p_demux_track )
995 MP4_Box_data_stsz_t *stsz;
996 MP4_Box_data_stts_t *stts;
997 /* TODO use also stss and stsh table for seeking */
998 /* FIXME use edit table */
1003 int64_t i_index_sample_used;
1008 * Gives the sample size for each samples. There is also a stz2 table
1009 * (compressed form) that we need to implement TODO */
1010 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1013 /* FIXME and stz2 */
1014 msg_Warn( p_demux, "cannot find STSZ box" );
1015 return VLC_EGENERIC;
1017 stsz = p_box->data.p_stsz;
1020 * Gives mapping between sample and decoding time
1022 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1025 msg_Warn( p_demux, "cannot find STTS box" );
1026 return VLC_EGENERIC;
1028 stts = p_box->data.p_stts;
1030 /* Use stsz table to create a sample number -> sample size table */
1031 p_demux_track->i_sample_count = stsz->i_sample_count;
1032 if( stsz->i_sample_size )
1034 /* 1: all sample have the same size, so no need to construct a table */
1035 p_demux_track->i_sample_size = stsz->i_sample_size;
1036 p_demux_track->p_sample_size = NULL;
1040 /* 2: each sample can have a different size */
1041 p_demux_track->i_sample_size = 0;
1042 p_demux_track->p_sample_size =
1043 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1045 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1047 p_demux_track->p_sample_size[i_sample] =
1048 stsz->i_entry_size[i_sample];
1052 /* Use stts table to create a sample number -> dts table.
1053 * XXX: if we don't want to waste too much memory, we can't expand
1054 * the box! so each chunk will contain an "extract" of this table
1055 * for fast research (problem with raw stream where a sample is sometime
1056 * just channels*bits_per_sample/8 */
1059 i_index = 0; i_index_sample_used = 0;
1060 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1062 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1063 int64_t i_entry, i_sample_count, i;
1066 ck->i_first_dts = i_last_dts;
1068 /* count how many entries are needed for this chunk
1069 * for p_sample_delta_dts and p_sample_count_dts */
1070 i_sample_count = ck->i_sample_count;
1073 while( i_sample_count > 0 )
1075 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1076 /* don't count already used sample in this entry */
1078 i_sample_count += i_index_sample_used;
1084 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1085 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1088 i_sample_count = ck->i_sample_count;
1089 for( i = 0; i < i_entry; i++ )
1094 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1096 i_used = __MIN( i_rest, i_sample_count );
1098 i_index_sample_used += i_used;
1099 i_sample_count -= i_used;
1101 ck->p_sample_count_dts[i] = i_used;
1102 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1104 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1106 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1109 i_index_sample_used = 0;
1115 * Gives the delta between decoding time (dts) and composition table (pts)
1117 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1120 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1122 msg_Warn( p_demux, "CTTS table" );
1124 /* Create pts-dts table per chunk */
1125 i_index = 0; i_index_sample_used = 0;
1126 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1128 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1129 int64_t i_entry, i_sample_count, i;
1131 /* count how many entries are needed for this chunk
1132 * for p_sample_delta_dts and p_sample_count_dts */
1133 i_sample_count = ck->i_sample_count;
1136 while( i_sample_count > 0 )
1138 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1140 /* don't count already used sample in this entry */
1142 i_sample_count += i_index_sample_used;
1148 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1149 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1152 i_sample_count = ck->i_sample_count;
1153 for( i = 0; i < i_entry; i++ )
1158 i_rest = ctts->i_sample_count[i_index] -
1159 i_index_sample_used;
1161 i_used = __MIN( i_rest, i_sample_count );
1163 i_index_sample_used += i_used;
1164 i_sample_count -= i_used;
1166 ck->p_sample_count_pts[i] = i_used;
1167 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1169 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1172 i_index_sample_used = 0;
1178 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1179 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1180 i_last_dts / p_demux_track->i_timescale );
1187 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1189 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1190 unsigned int i_chunk, es_out_id_t **pp_es )
1192 MP4_Box_t *p_sample;
1198 if( !p_track->chunk[i_chunk].i_sample_description_index )
1200 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1201 p_track->i_track_ID );
1202 return VLC_EGENERIC;
1205 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1206 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1209 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1211 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1212 p_track->i_track_ID );
1213 return VLC_EGENERIC;
1216 p_track->p_sample = p_sample;
1218 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1220 MP4_Box_data_sample_soun_t *p_soun;
1222 p_soun = p_sample->data.p_sample_soun;
1224 if( p_soun->i_qt_version == 0 )
1226 switch( p_sample->i_type )
1228 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1229 p_soun->i_qt_version = 1;
1230 p_soun->i_sample_per_packet = 64;
1231 p_soun->i_bytes_per_packet = 34;
1232 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1233 p_soun->i_bytes_per_sample = 2;
1235 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1236 p_soun->i_qt_version = 1;
1237 p_soun->i_sample_per_packet = 6;
1238 p_soun->i_bytes_per_packet = 2;
1239 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1240 p_soun->i_bytes_per_sample = 2;
1242 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1243 p_soun->i_qt_version = 1;
1244 p_soun->i_sample_per_packet = 12;
1245 p_soun->i_bytes_per_packet = 2;
1246 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1247 p_soun->i_bytes_per_sample = 2;
1249 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1250 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1251 p_soun->i_samplesize = 8;
1258 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1260 p_soun->i_qt_version = 0;
1265 /* It's a little ugly but .. there are special cases */
1266 switch( p_sample->i_type )
1268 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1269 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1270 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1272 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1273 p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1275 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1276 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1279 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1280 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1281 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1282 /* FIXME UTF-8 doesn't work here ? */
1283 /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1287 p_track->fmt.i_codec = p_sample->i_type;
1291 /* now see if esds is present and if so create a data packet
1292 with decoder_specific_info */
1293 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1294 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1295 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1296 ( p_esds->data.p_esds )&&
1299 /* First update information based on i_objectTypeIndication */
1300 switch( p_decconfig->i_objectTypeIndication )
1302 case( 0x20 ): /* MPEG4 VIDEO */
1303 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1306 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1313 case( 0x65): /* MPEG2 video */
1314 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1316 /* Theses are MPEG2-AAC */
1317 case( 0x66): /* main profile */
1318 case( 0x67): /* Low complexity profile */
1319 case( 0x68): /* Scaleable Sampling rate profile */
1320 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1322 /* true MPEG 2 audio */
1324 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1326 case( 0x6a): /* MPEG1 video */
1327 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1329 case( 0x6b): /* MPEG1 audio */
1330 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1332 case( 0x6c ): /* jpeg */
1333 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1337 case( 0xe0 ): /* NeroDigital: dvd subs */
1338 if( p_track->fmt.i_cat == SPU_ES )
1340 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1345 /* Unknown entry, but don't touch i_fourcc */
1347 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1348 p_decconfig->i_objectTypeIndication,
1349 p_track->i_track_ID );
1352 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1353 if( p_track->fmt.i_extra > 0 )
1355 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1356 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1357 p_track->fmt.i_extra );
1362 switch( p_sample->i_type )
1364 /* qt decoder, send the complete chunk */
1365 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1366 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1367 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1368 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1369 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1370 p_track->fmt.i_extra =
1371 p_sample->data.p_sample_vide->i_qt_image_description;
1372 if( p_track->fmt.i_extra > 0 )
1374 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1375 memcpy( p_track->fmt.p_extra,
1376 p_sample->data.p_sample_vide->p_qt_image_description,
1377 p_track->fmt.i_extra);
1380 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1381 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1382 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1383 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1384 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1385 p_track->fmt.i_extra =
1386 p_sample->data.p_sample_soun->i_qt_description;
1387 if( p_track->fmt.i_extra > 0 )
1389 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1390 memcpy( p_track->fmt.p_extra,
1391 p_sample->data.p_sample_soun->p_qt_description,
1392 p_track->fmt.i_extra);
1396 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1397 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1399 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1403 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1404 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1405 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1406 p_track->fmt.i_extra );
1410 msg_Err( p_demux, "missing avcC" );
1422 /* some last initialisation */
1423 switch( p_track->fmt.i_cat )
1426 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1427 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1429 /* fall on display size */
1430 if( p_track->fmt.video.i_width <= 0 )
1431 p_track->fmt.video.i_width = p_track->i_width;
1432 if( p_track->fmt.video.i_height <= 0 )
1433 p_track->fmt.video.i_height = p_track->i_height;
1435 /* Find out apect ratio from display size */
1436 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1437 /* Work-around buggy muxed files */
1438 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1439 p_track->fmt.video.i_aspect =
1440 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1443 p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1444 p_track->fmt.video.i_frame_rate_base = 1;
1446 if( p_track->fmt.video.i_frame_rate &&
1447 (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1448 p_box->data.p_stts->i_entry_count >= 1 )
1450 p_track->fmt.video.i_frame_rate_base =
1451 p_box->data.p_stts->i_sample_delta[0];
1457 p_track->fmt.audio.i_channels =
1458 p_sample->data.p_sample_soun->i_channelcount;
1459 p_track->fmt.audio.i_rate =
1460 p_sample->data.p_sample_soun->i_sampleratehi;
1461 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1462 p_sample->data.p_sample_soun->i_sampleratehi *
1463 p_sample->data.p_sample_soun->i_samplesize;
1464 p_track->fmt.audio.i_bitspersample =
1465 p_sample->data.p_sample_soun->i_samplesize;
1472 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1477 /* given a time it return sample/chunk
1478 * it also update elst field of the track
1480 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1481 int64_t i_start, uint32_t *pi_chunk,
1482 uint32_t *pi_sample )
1484 demux_sys_t *p_sys = p_demux->p_sys;
1487 unsigned int i_sample;
1488 unsigned int i_chunk;
1491 /* FIXME see if it's needed to check p_track->i_chunk_count */
1492 if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1494 return( VLC_EGENERIC );
1497 /* handle elst (find the correct one) */
1498 MP4_TrackSetELST( p_demux, p_track, i_start );
1499 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1501 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1502 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1504 /* now calculate i_start for this elst */
1506 i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1514 /* to track time scale */
1515 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1516 /* add elst offset */
1517 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1518 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1519 elst->i_media_time[p_track->i_elst] > 0 )
1521 i_start += elst->i_media_time[p_track->i_elst];
1524 msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1525 "ms (track)", p_track->i_elst,
1526 i_mvt * 1000 / p_sys->i_timescale,
1527 i_start * 1000 / p_track->i_timescale );
1531 /* convert absolute time to in timescale unit */
1532 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1535 /* we start from sample 0/chunk 0, hope it won't take too much time */
1536 /* *** find good chunk *** */
1537 for( i_chunk = 0; ; i_chunk++ )
1539 if( i_chunk + 1 >= p_track->i_chunk_count )
1541 /* at the end and can't check if i_start in this chunk,
1542 it will be check while searching i_sample */
1543 i_chunk = p_track->i_chunk_count - 1;
1547 if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1548 i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1554 /* *** find sample in the chunk *** */
1555 i_sample = p_track->chunk[i_chunk].i_sample_first;
1556 i_dts = p_track->chunk[i_chunk].i_first_dts;
1557 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1560 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1561 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1564 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1565 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1567 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1572 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1576 i_sample += ( i_start - i_dts ) /
1577 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1582 if( i_sample >= p_track->i_sample_count )
1584 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1585 "(seeking too far) chunk=%d sample=%d",
1586 p_track->i_track_ID, i_chunk, i_sample );
1587 return( VLC_EGENERIC );
1591 /* *** Try to find nearest sync points *** */
1592 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1594 unsigned int i_index;
1596 "track[Id 0x%x] using Sync Sample Box (stss)",
1597 p_track->i_track_ID );
1598 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1600 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1604 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1606 p_stss->data.p_stss->i_sample_number[i_index-1] );
1607 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1608 /* new i_sample is less than old so i_chunk can only decreased */
1609 while( i_chunk > 0 &&
1610 i_sample < p_track->chunk[i_chunk].i_sample_first )
1617 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1619 p_stss->data.p_stss->i_sample_number[i_index] );
1620 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1621 /* new i_sample is more than old so i_chunk can only increased */
1622 while( i_chunk < p_track->i_chunk_count - 1 &&
1623 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1624 p_track->chunk[i_chunk].i_sample_count )
1635 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1636 "Sample Box (stss)", p_track->i_track_ID );
1639 *pi_chunk = i_chunk;
1640 *pi_sample = i_sample;
1645 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1646 unsigned int i_chunk, unsigned int i_sample )
1648 vlc_bool_t b_reselect = VLC_FALSE;
1650 /* now see if actual es is ok */
1651 if( p_track->i_chunk < 0 ||
1652 p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1653 p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1654 p_track->chunk[i_chunk].i_sample_description_index )
1656 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1657 p_track->i_track_ID );
1659 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1660 p_track->p_es, &b_reselect );
1662 es_out_Del( p_demux->out, p_track->p_es );
1664 p_track->p_es = NULL;
1666 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1668 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1669 p_track->i_track_ID );
1671 p_track->b_ok = VLC_FALSE;
1672 p_track->b_selected = VLC_FALSE;
1673 return VLC_EGENERIC;
1677 /* select again the new decoder */
1680 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1683 p_track->i_chunk = i_chunk;
1684 p_track->i_sample = i_sample;
1686 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1689 /****************************************************************************
1691 ****************************************************************************
1692 * Parse track information and create all needed data to run a track
1693 * If it succeed b_ok is set to 1 else to 0
1694 ****************************************************************************/
1695 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1696 MP4_Box_t *p_box_trak )
1698 demux_sys_t *p_sys = p_demux->p_sys;
1700 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1701 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1716 /* hint track unsupported */
1718 /* set default value (-> track unusable) */
1719 p_track->b_ok = VLC_FALSE;
1720 p_track->b_enable = VLC_FALSE;
1721 p_track->b_selected = VLC_FALSE;
1723 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1730 /* do we launch this track by default ? */
1732 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1734 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1735 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1736 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1740 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1743 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1744 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1746 if( ( !p_mdhd )||( !p_hdlr ) )
1751 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1753 for( i = 0; i < 3; i++ )
1755 language[i] = p_mdhd->data.p_mdhd->i_language[i];
1759 switch( p_hdlr->data.p_hdlr->i_handler_type )
1761 case( FOURCC_soun ):
1762 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1766 p_track->fmt.i_cat = AUDIO_ES;
1769 case( FOURCC_vide ):
1770 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1774 p_track->fmt.i_cat = VIDEO_ES;
1777 case( FOURCC_text ):
1778 case( FOURCC_subp ):
1779 p_track->fmt.i_cat = SPU_ES;
1786 p_track->i_elst = 0;
1787 p_track->i_elst_time = 0;
1788 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1790 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1793 msg_Warn( p_demux, "elst box found" );
1794 for( i = 0; i < elst->i_entry_count; i++ )
1796 msg_Dbg( p_demux, " - [%d] duration="I64Fd"ms media time="I64Fd
1797 "ms) rate=%d.%d", i,
1798 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1799 elst->i_media_time[i] >= 0 ?
1800 elst->i_media_time[i] * 1000 / p_track->i_timescale : -1,
1801 elst->i_media_rate_integer[i],
1802 elst->i_media_rate_fraction[i] );
1809 p_dinf = MP4_BoxGet( p_minf, "dinf" );
1811 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1812 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1817 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1818 p_track->b_drms = p_drms != NULL;
1819 p_track->p_drms = p_track->b_drms ?
1820 p_drms->data.p_sample_soun->p_drms : NULL;
1823 if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1825 p_track->fmt.psz_language = strdup( language );
1828 p_udta = MP4_BoxGet( p_box_trak, "udta" );
1831 MP4_Box_t *p_0xa9xxx;
1832 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1833 p_0xa9xxx = p_0xa9xxx->p_next )
1835 switch( p_0xa9xxx->i_type )
1837 case FOURCC_0xa9nam:
1838 p_track->fmt.psz_description =
1839 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1845 /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1846 if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1848 MP4_Box_t *p_sample;
1850 p_sample = MP4_BoxGet( p_track->p_stsd, "[0]" );
1851 if( p_sample && p_sample->data.p_sample_soun)
1853 MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1854 if( p_soun->i_qt_version == 0 &&
1855 p_track->i_timescale != p_soun->i_sampleratehi )
1858 "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1860 "Making both equal. (report any problem)",
1861 p_track->i_timescale, p_soun->i_sampleratehi );
1863 if( p_soun->i_sampleratehi )
1864 p_track->i_timescale = p_soun->i_sampleratehi;
1866 p_soun->i_sampleratehi = p_track->i_timescale;
1871 /* Create chunk index table and sample index table */
1872 if( TrackCreateChunksIndex( p_demux,p_track ) ||
1873 TrackCreateSamplesIndex( p_demux, p_track ) )
1875 return; /* cannot create chunks index */
1878 p_track->i_chunk = 0;
1879 p_track->i_sample = 0;
1882 if( TrackCreateES( p_demux,
1883 p_track, p_track->i_chunk,
1886 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1887 p_track->i_track_ID );
1894 for( i = 0; i < p_track->i_chunk_count; i++ )
1896 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1897 i, p_track->chunk[i].i_sample_count,
1898 p_track->chunk[i].i_first_dts );
1903 p_track->b_ok = VLC_TRUE;
1906 /****************************************************************************
1908 ****************************************************************************
1909 * Destroy a track created by MP4_TrackCreate.
1910 ****************************************************************************/
1911 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1913 unsigned int i_chunk;
1915 p_track->b_ok = VLC_FALSE;
1916 p_track->b_enable = VLC_FALSE;
1917 p_track->b_selected = VLC_FALSE;
1919 es_format_Clean( &p_track->fmt );
1921 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1923 if( p_track->chunk )
1925 FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1926 FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1928 FREE(p_track->chunk[i_chunk].p_sample_count_pts);
1929 FREE(p_track->chunk[i_chunk].p_sample_offset_pts );
1932 FREE( p_track->chunk );
1934 if( !p_track->i_sample_size )
1936 FREE( p_track->p_sample_size );
1940 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1943 if( !p_track->b_ok )
1945 return VLC_EGENERIC;
1948 if( p_track->b_selected )
1950 msg_Warn( p_demux, "track[Id 0x%x] already selected",
1951 p_track->i_track_ID );
1955 return MP4_TrackSeek( p_demux, p_track, i_start );
1958 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1960 if( !p_track->b_ok )
1965 if( !p_track->b_selected )
1967 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1968 p_track->i_track_ID );
1973 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1974 p_track->p_es, VLC_FALSE );
1977 p_track->b_selected = VLC_FALSE;
1980 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1986 if( !p_track->b_ok )
1988 return( VLC_EGENERIC );
1991 p_track->b_selected = VLC_FALSE;
1993 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1994 &i_chunk, &i_sample ) )
1996 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1997 p_track->i_track_ID );
1998 return( VLC_EGENERIC );
2001 p_track->b_selected = VLC_TRUE;
2003 if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2006 p_track->b_selected = VLC_TRUE;
2008 return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2013 * 3 types: for audio
2016 #define QT_V0_MAX_SAMPLES 1024
2017 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2020 MP4_Box_data_sample_soun_t *p_soun;
2022 if( p_track->i_sample_size == 0 )
2024 /* most simple case */
2025 return p_track->p_sample_size[p_track->i_sample];
2027 if( p_track->fmt.i_cat != AUDIO_ES )
2029 return p_track->i_sample_size;
2032 p_soun = p_track->p_sample->data.p_sample_soun;
2034 if( p_soun->i_qt_version == 1 )
2036 i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2037 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2039 else if( p_track->i_sample_size > 256 )
2041 /* We do that so we don't read too much data
2042 * (in this case we are likely dealing with compressed data) */
2043 i_size = p_track->i_sample_size;
2047 /* Read a bunch of samples at once */
2048 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2049 ( p_track->i_sample -
2050 p_track->chunk[p_track->i_chunk].i_sample_first );
2052 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2053 i_size = i_samples * p_track->i_sample_size;
2056 //fprintf( stderr, "size=%d\n", i_size );
2060 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2062 unsigned int i_sample;
2065 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2067 if( p_track->i_sample_size )
2069 MP4_Box_data_sample_soun_t *p_soun =
2070 p_track->p_sample->data.p_sample_soun;
2072 if( p_soun->i_qt_version == 0 )
2074 i_pos += ( p_track->i_sample -
2075 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2076 p_track->i_sample_size;
2080 /* we read chunk by chunk */
2086 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2087 i_sample < p_track->i_sample; i_sample++ )
2089 i_pos += p_track->p_sample_size[i_sample];
2096 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2098 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2100 MP4_Box_data_sample_soun_t *p_soun;
2102 p_soun = p_track->p_sample->data.p_sample_soun;
2104 if( p_soun->i_qt_version == 1 )
2106 /* chunk by chunk */
2108 p_track->chunk[p_track->i_chunk].i_sample_first +
2109 p_track->chunk[p_track->i_chunk].i_sample_count;
2111 else if( p_track->i_sample_size > 256 )
2113 /* We do that so we don't read too much data
2114 * (in this case we are likely dealing with compressed data) */
2115 p_track->i_sample += 1;
2120 p_track->i_sample += QT_V0_MAX_SAMPLES;
2121 if( p_track->i_sample >
2122 p_track->chunk[p_track->i_chunk].i_sample_first +
2123 p_track->chunk[p_track->i_chunk].i_sample_count )
2126 p_track->chunk[p_track->i_chunk].i_sample_first +
2127 p_track->chunk[p_track->i_chunk].i_sample_count;
2133 p_track->i_sample++;
2136 if( p_track->i_sample >= p_track->i_sample_count )
2137 return VLC_EGENERIC;
2139 /* Have we changed chunk ? */
2140 if( p_track->i_sample >=
2141 p_track->chunk[p_track->i_chunk].i_sample_first +
2142 p_track->chunk[p_track->i_chunk].i_sample_count )
2144 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2145 p_track->i_sample ) )
2147 msg_Warn( p_demux, "track[0x%x] will be disabled "
2148 "(cannot restart decoder)", p_track->i_track_ID );
2149 MP4_TrackUnselect( p_demux, p_track );
2150 return VLC_EGENERIC;
2154 /* Have we changed elst */
2155 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2157 demux_sys_t *p_sys = p_demux->p_sys;
2158 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2159 int64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2160 p_sys->i_timescale / (int64_t)1000000;
2162 if( p_track->i_elst < elst->i_entry_count &&
2163 i_mvt >= p_track->i_elst_time +
2164 elst->i_segment_duration[p_track->i_elst] )
2166 MP4_TrackSetELST( p_demux, p_track,
2167 MP4_TrackGetDTS( p_demux, p_track ) );
2174 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2177 demux_sys_t *p_sys = p_demux->p_sys;
2178 int i_elst_last = tk->i_elst;
2180 /* handle elst (find the correct one) */
2182 tk->i_elst_time = 0;
2183 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2185 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2186 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2188 for( tk->i_elst = 0; tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2190 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2192 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2196 tk->i_elst_time += i_dur;
2199 if( tk->i_elst >= elst->i_entry_count )
2201 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2202 tk->i_elst = elst->i_entry_count - 1;
2203 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2206 if( elst->i_media_time[tk->i_elst] < 0 )
2209 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2212 if( i_elst_last != tk->i_elst )
2214 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );