1 /*****************************************************************************
2 * mp4.c : MP4 file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004 VideoLAN
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 uint32_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) / p_track->i_timescale;
233 i_sample -= ck->p_sample_count_pts[i_index];
237 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
239 return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
242 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
244 /*****************************************************************************
245 * Open: check file and initializes MP4 structures
246 *****************************************************************************/
247 static int Open( vlc_object_t * p_this )
249 demux_t *p_demux = (demux_t *)p_this;
260 vlc_bool_t b_seekable;
262 /* A little test to see if it could be a mp4 */
263 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
265 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
276 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
283 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
286 msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
290 /*Set exported functions */
291 p_demux->pf_demux = Demux;
292 p_demux->pf_control = Control;
294 /* create our structure that will contains all data */
295 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
296 memset( p_sys, 0, sizeof( demux_sys_t ) );
298 /* Now load all boxes ( except raw data ) */
299 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
301 msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
305 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
307 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
309 switch( p_ftyp->data.p_ftyp->i_major_brand )
313 "ISO Media file (isom) version %d.",
314 p_ftyp->data.p_ftyp->i_minor_version );
318 "unrecognized major file specification (%4.4s).",
319 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
325 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
328 /* the file need to have one moov box */
329 if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
331 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
335 msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
338 /* we have a free box as a moov, rename it */
339 p_foov->i_type = FOURCC_moov;
342 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
344 playlist_t *p_playlist;
345 playlist_item_t *p_item;
346 int i_count = MP4_BoxCount( p_rmra, "rmda" );
348 vlc_bool_t b_play = VLC_FALSE;
350 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
353 (playlist_t *)vlc_object_find( p_demux,
358 p_item = playlist_LockItemGetByInput( p_playlist,
359 ((input_thread_t *)p_demux->p_parent)->input.p_item );
360 playlist_ItemToNode( p_playlist, p_item );
362 for( i = 0; i < i_count; i++ )
364 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
368 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
372 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
374 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
375 psz_ref, (char*)&i_ref_type );
377 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
379 if( strstr( psz_ref, "qt5gateQT" ) )
381 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
384 if( !strncmp( psz_ref, "http://", 7 ) ||
385 !strncmp( psz_ref, "rtsp://", 7 ) )
387 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
390 playlist_item_t *p_child =
391 playlist_ItemNew( p_playlist,
395 playlist_NodeAddItem( p_playlist, p_child,
396 p_item->pp_parents[0]->i_view,
397 p_item, PLAYLIST_APPEND,
399 playlist_CopyParents( p_item, p_child );
406 /* msg dbg relative ? */
407 char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
408 char *end = strrchr( p_demux->psz_path, '/' );
412 int i_len = end + 1 - p_demux->psz_path;
414 strcpy( psz_absolute, p_demux->psz_access );
415 strcat( psz_absolute, "://" );
416 strncat( psz_absolute, p_demux->psz_path, i_len);
420 strcpy( psz_absolute, "" );
422 strcat( psz_absolute, psz_ref );
423 msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
426 playlist_item_t *p_child =
427 playlist_ItemNew( p_playlist,
432 playlist_NodeAddItem( p_playlist, p_child,
433 p_item->pp_parents[0]->i_view,
434 p_item, PLAYLIST_APPEND,
436 playlist_CopyParents( p_item, p_child );
444 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
445 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
448 if( b_play == VLC_TRUE )
450 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
451 p_playlist->status.i_view,
452 p_playlist->status.p_item, NULL );
454 vlc_object_release( p_playlist );
458 msg_Err( p_demux, "can't find playlist" );
462 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
466 msg_Err( p_demux, "cannot find /moov/mvhd" );
471 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
472 p_demux->pf_demux = DemuxRef;
478 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
479 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
482 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
484 msg_Err( p_demux, "cannot find any /moov/trak" );
487 msg_Dbg( p_demux, "find %d track%c",
489 p_sys->i_tracks ? 's':' ' );
491 /* allocate memory */
492 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
493 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
495 /* now process each track and extract all usefull information */
496 for( i = 0; i < p_sys->i_tracks; i++ )
498 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
499 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
501 if( p_sys->track[i].b_ok )
504 switch( p_sys->track[i].fmt.i_cat )
513 psz_cat = "subtitle";
521 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
522 p_sys->track[i].i_track_ID, psz_cat,
523 p_sys->track[i].b_enable ? "enable":"disable",
524 p_sys->track[i].fmt.psz_language ?
525 p_sys->track[i].fmt.psz_language : "undef" );
529 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
530 p_sys->track[i].i_track_ID );
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];
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..." );
605 /* first wait for the good time to read a packet */
606 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
608 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
610 /* we will read 100ms for each stream so ...*/
611 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
613 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
615 mp4_track_t *tk = &p_sys->track[i_track];
617 if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
622 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
625 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
626 MP4_TrackGetDTS( p_demux, tk ),
627 MP4_GetMoviePTS( p_sys ) );
630 if( MP4_TrackSampleSize( tk ) > 0 )
636 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
638 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
640 MP4_TrackUnselect( p_demux, tk );
646 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
648 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
650 MP4_TrackUnselect( p_demux, tk );
654 if( tk->b_drms && tk->p_drms )
656 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
659 else if( tk->fmt.i_cat == SPU_ES )
661 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
662 p_block->i_buffer >= 2 )
664 uint16_t i_size = GetWBE( p_block->p_buffer );
666 if( i_size + 2 <= p_block->i_buffer )
669 /* remove the length field, and append a '\0' */
670 memmove( &p_block->p_buffer[0],
671 &p_block->p_buffer[2], i_size );
672 p_block->p_buffer[i_size] = '\0';
673 p_block->i_buffer = i_size + 1;
675 /* convert \r -> \n */
676 while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
684 p_block->i_buffer = 0;
689 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
691 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
693 p_block->i_pts = p_block->i_dts + i_delta;
694 else if( tk->fmt.i_cat != VIDEO_ES )
695 p_block->i_pts = p_block->i_dts;
699 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
700 es_out_Send( p_demux->out, tk->p_es, p_block );
704 if( MP4_TrackNextSample( p_demux, tk ) )
713 /*****************************************************************************
714 * Seek: Got to i_date
715 ******************************************************************************/
716 static int Seek( demux_t *p_demux, mtime_t i_date )
718 demux_sys_t *p_sys = p_demux->p_sys;
719 unsigned int i_track;
721 /* First update update global time */
722 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
723 p_sys->i_pcr = i_date;
725 /* Now for each stream try to go to this time */
726 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
728 mp4_track_t *tk = &p_sys->track[i_track];
729 MP4_TrackSeek( p_demux, tk, i_date );
734 /*****************************************************************************
736 *****************************************************************************/
737 static int Control( demux_t *p_demux, int i_query, va_list args )
739 demux_sys_t *p_sys = p_demux->p_sys;
746 case DEMUX_GET_POSITION:
747 pf = (double*)va_arg( args, double * );
748 if( p_sys->i_duration > 0 )
750 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
758 case DEMUX_SET_POSITION:
759 f = (double)va_arg( args, double );
760 if( p_sys->i_timescale > 0 )
762 i64 = (int64_t)( f * (double)1000000 *
763 (double)p_sys->i_duration /
764 (double)p_sys->i_timescale );
765 return Seek( p_demux, i64 );
767 else return VLC_SUCCESS;
770 pi64 = (int64_t*)va_arg( args, int64_t * );
771 if( p_sys->i_timescale > 0 )
773 *pi64 = (mtime_t)1000000 *
774 (mtime_t)p_sys->i_time /
775 (mtime_t)p_sys->i_timescale;
781 i64 = (int64_t)va_arg( args, int64_t );
782 return Seek( p_demux, i64 );
784 case DEMUX_GET_LENGTH:
785 pi64 = (int64_t*)va_arg( args, int64_t * );
786 if( p_sys->i_timescale > 0 )
788 *pi64 = (mtime_t)1000000 *
789 (mtime_t)p_sys->i_duration /
790 (mtime_t)p_sys->i_timescale;
796 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
801 vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
803 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
804 MP4_Box_t *p_0xa9xxx;
809 *pp_meta = meta = vlc_meta_New();
810 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
811 p_0xa9xxx = p_0xa9xxx->p_next )
813 switch( p_0xa9xxx->i_type )
815 case FOURCC_0xa9nam: /* Full name */
816 vlc_meta_Add( meta, VLC_META_TITLE,
817 p_0xa9xxx->data.p_0xa9xxx->psz_text );
820 vlc_meta_Add( meta, VLC_META_AUTHOR,
821 p_0xa9xxx->data.p_0xa9xxx->psz_text );
824 vlc_meta_Add( meta, VLC_META_ARTIST,
825 p_0xa9xxx->data.p_0xa9xxx->psz_text );
828 vlc_meta_Add( meta, VLC_META_COPYRIGHT,
829 p_0xa9xxx->data.p_0xa9xxx->psz_text );
831 case FOURCC_0xa9day: /* Creation Date */
832 vlc_meta_Add( meta, VLC_META_DATE,
833 p_0xa9xxx->data.p_0xa9xxx->psz_text );
835 case FOURCC_0xa9des: /* Description */
836 vlc_meta_Add( meta, VLC_META_DESCRIPTION,
837 p_0xa9xxx->data.p_0xa9xxx->psz_text );
839 case FOURCC_0xa9gen: /* Genre */
840 vlc_meta_Add( meta, VLC_META_GENRE,
841 p_0xa9xxx->data.p_0xa9xxx->psz_text );
845 case FOURCC_0xa9inf: /* Information */
846 case FOURCC_0xa9alb: /* Album */
847 case FOURCC_0xa9dir: /* Director */
848 case FOURCC_0xa9dis: /* Disclaimer */
849 case FOURCC_0xa9enc: /* Encoded By */
850 case FOURCC_0xa9trk: /* Track */
851 case FOURCC_0xa9cmt: /* Commment */
852 case FOURCC_0xa9url: /* URL */
853 case FOURCC_0xa9req: /* Requirements */
854 case FOURCC_0xa9fmt: /* Original Format */
855 case FOURCC_0xa9dsa: /* Display Source As */
856 case FOURCC_0xa9hst: /* Host Computer */
857 case FOURCC_0xa9prd: /* Producer */
858 case FOURCC_0xa9prf: /* Performers */
859 case FOURCC_0xa9ope: /* Original Performer */
860 case FOURCC_0xa9src: /* Providers Source Content */
861 case FOURCC_0xa9wrt: /* Writer */
862 case FOURCC_0xa9com: /* Composer */
863 case FOURCC_WLOC: /* Window Location */
864 /* TODO one day, but they aren't really meaningfull */
874 case DEMUX_GET_TITLE_INFO:
875 case DEMUX_SET_NEXT_DEMUX_TIME:
876 case DEMUX_SET_GROUP:
880 msg_Warn( p_demux, "control query unimplemented !!!" );
885 /*****************************************************************************
886 * Close: frees unused data
887 *****************************************************************************/
888 static void Close ( vlc_object_t * p_this )
890 unsigned int i_track;
891 demux_t * p_demux = (demux_t *)p_this;
892 demux_sys_t *p_sys = p_demux->p_sys;
894 msg_Dbg( p_demux, "freeing all memory" );
896 MP4_BoxFree( p_demux->s, p_sys->p_root );
897 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
899 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
901 FREE( p_sys->track );
908 /****************************************************************************
909 * Local functions, specific to vlc
910 ****************************************************************************/
912 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
913 static int TrackCreateChunksIndex( demux_t *p_demux,
914 mp4_track_t *p_demux_track )
916 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
919 unsigned int i_chunk;
920 unsigned int i_index, i_last;
922 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
923 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
924 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
926 return( VLC_EGENERIC );
929 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
930 if( !p_demux_track->i_chunk_count )
932 msg_Warn( p_demux, "no chunk defined" );
933 return( VLC_EGENERIC );
935 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
936 sizeof( mp4_chunk_t ) );
938 /* first we read chunk offset */
939 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
941 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
943 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
946 ck->p_sample_count_dts = NULL;
947 ck->p_sample_delta_dts = NULL;
948 ck->p_sample_count_pts = NULL;
949 ck->p_sample_offset_pts = NULL;
952 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
953 to be used for the sample XXX begin to 1
954 We construct it begining at the end */
955 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
956 i_index = p_stsc->data.p_stsc->i_entry_count;
959 msg_Warn( p_demux, "cannot read chunk table or table empty" );
960 return( VLC_EGENERIC );
965 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
966 i_chunk < i_last; i_chunk++ )
968 p_demux_track->chunk[i_chunk].i_sample_description_index =
969 p_stsc->data.p_stsc->i_sample_description_index[i_index];
970 p_demux_track->chunk[i_chunk].i_sample_count =
971 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
973 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
976 p_demux_track->chunk[0].i_sample_first = 0;
977 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
979 p_demux_track->chunk[i_chunk].i_sample_first =
980 p_demux_track->chunk[i_chunk-1].i_sample_first +
981 p_demux_track->chunk[i_chunk-1].i_sample_count;
984 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
985 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
990 static int TrackCreateSamplesIndex( demux_t *p_demux,
991 mp4_track_t *p_demux_track )
994 MP4_Box_data_stsz_t *stsz;
995 MP4_Box_data_stts_t *stts;
996 /* TODO use also stss and stsh table for seeking */
997 /* FIXME use edit table */
1002 int64_t i_index_sample_used;
1007 * Gives the sample size for each samples. There is also a stz2 table
1008 * (compressed form) that we need to implement TODO */
1009 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1012 /* FIXME and stz2 */
1013 msg_Warn( p_demux, "cannot find STSZ box" );
1014 return VLC_EGENERIC;
1016 stsz = p_box->data.p_stsz;
1019 * Gives mapping between sample and decoding time
1021 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1024 msg_Warn( p_demux, "cannot find STTS box" );
1025 return VLC_EGENERIC;
1027 stts = p_box->data.p_stts;
1029 /* Use stsz table to create a sample number -> sample size table */
1030 p_demux_track->i_sample_count = stsz->i_sample_count;
1031 if( stsz->i_sample_size )
1033 /* 1: all sample have the same size, so no need to construct a table */
1034 p_demux_track->i_sample_size = stsz->i_sample_size;
1035 p_demux_track->p_sample_size = NULL;
1039 /* 2: each sample can have a different size */
1040 p_demux_track->i_sample_size = 0;
1041 p_demux_track->p_sample_size =
1042 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1044 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1046 p_demux_track->p_sample_size[i_sample] =
1047 stsz->i_entry_size[i_sample];
1051 /* Use stts table to create a sample number -> dts table.
1052 * XXX: if we don't want to waste too much memory, we can't expand
1053 * the box! so each chunk will contain an "extract" of this table
1054 * for fast research (problem with raw stream where a sample is sometime
1055 * just channels*bits_per_sample/8 */
1058 i_index = 0; i_index_sample_used = 0;
1059 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1061 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1062 int64_t i_entry, i_sample_count, i;
1065 ck->i_first_dts = i_last_dts;
1067 /* count how many entries are needed for this chunk
1068 * for p_sample_delta_dts and p_sample_count_dts */
1069 i_sample_count = ck->i_sample_count;
1072 while( i_sample_count > 0 )
1074 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1075 /* don't count already used sample in this entry */
1077 i_sample_count += i_index_sample_used;
1083 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1084 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1087 i_sample_count = ck->i_sample_count;
1088 for( i = 0; i < i_entry; i++ )
1093 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1095 i_used = __MIN( i_rest, i_sample_count );
1097 i_index_sample_used += i_used;
1098 i_sample_count -= i_used;
1100 ck->p_sample_count_dts[i] = i_used;
1101 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1103 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1105 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1108 i_index_sample_used = 0;
1114 * Gives the delta between decoding time (dts) and composition table (pts)
1116 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1119 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1121 msg_Warn( p_demux, "CTTS table" );
1123 /* Create pts-dts table per chunk */
1124 i_index = 0; i_index_sample_used = 0;
1125 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1127 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1128 int64_t i_entry, i_sample_count, i;
1130 /* count how many entries are needed for this chunk
1131 * for p_sample_delta_dts and p_sample_count_dts */
1132 i_sample_count = ck->i_sample_count;
1135 while( i_sample_count > 0 )
1137 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1139 /* don't count already used sample in this entry */
1141 i_sample_count += i_index_sample_used;
1147 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1148 ck->p_sample_offset_pts = calloc( i_entry, sizeof( uint32_t ) );
1151 i_sample_count = ck->i_sample_count;
1152 for( i = 0; i < i_entry; i++ )
1157 i_rest = ctts->i_sample_count[i_index] -
1158 i_index_sample_used;
1160 i_used = __MIN( i_rest, i_sample_count );
1162 i_index_sample_used += i_used;
1163 i_sample_count -= i_used;
1165 ck->p_sample_count_pts[i] = i_used;
1166 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1168 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1171 i_index_sample_used = 0;
1177 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1178 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1179 i_last_dts / p_demux_track->i_timescale );
1186 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1188 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1189 unsigned int i_chunk, es_out_id_t **pp_es )
1191 MP4_Box_t *p_sample;
1197 if( !p_track->chunk[i_chunk].i_sample_description_index )
1199 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1200 p_track->i_track_ID );
1201 return VLC_EGENERIC;
1204 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1205 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1208 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1210 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1211 p_track->i_track_ID );
1212 return VLC_EGENERIC;
1215 p_track->p_sample = p_sample;
1217 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1219 MP4_Box_data_sample_soun_t *p_soun;
1221 p_soun = p_sample->data.p_sample_soun;
1223 if( p_soun->i_qt_version == 0 )
1225 switch( p_sample->i_type )
1227 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1228 p_soun->i_qt_version = 1;
1229 p_soun->i_sample_per_packet = 64;
1230 p_soun->i_bytes_per_packet = 34;
1231 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1232 p_soun->i_bytes_per_sample = 2;
1234 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1235 p_soun->i_qt_version = 1;
1236 p_soun->i_sample_per_packet = 6;
1237 p_soun->i_bytes_per_packet = 2;
1238 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1239 p_soun->i_bytes_per_sample = 2;
1241 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1242 p_soun->i_qt_version = 1;
1243 p_soun->i_sample_per_packet = 12;
1244 p_soun->i_bytes_per_packet = 2;
1245 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1246 p_soun->i_bytes_per_sample = 2;
1248 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1249 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1250 p_soun->i_samplesize = 8;
1257 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1259 p_soun->i_qt_version = 0;
1264 /* It's a little ugly but .. there are special cases */
1265 switch( p_sample->i_type )
1267 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1268 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1269 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1271 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1272 p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1274 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1275 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1278 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1279 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1280 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1281 /* FIXME UTF-8 doesn't work here ? */
1282 /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1286 p_track->fmt.i_codec = p_sample->i_type;
1290 /* now see if esds is present and if so create a data packet
1291 with decoder_specific_info */
1292 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1293 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1294 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1295 ( p_esds->data.p_esds )&&
1298 /* First update information based on i_objectTypeIndication */
1299 switch( p_decconfig->i_objectTypeIndication )
1301 case( 0x20 ): /* MPEG4 VIDEO */
1302 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1305 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1312 case( 0x65): /* MPEG2 video */
1313 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1315 /* Theses are MPEG2-AAC */
1316 case( 0x66): /* main profile */
1317 case( 0x67): /* Low complexity profile */
1318 case( 0x68): /* Scaleable Sampling rate profile */
1319 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1321 /* true MPEG 2 audio */
1323 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1325 case( 0x6a): /* MPEG1 video */
1326 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1328 case( 0x6b): /* MPEG1 audio */
1329 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1331 case( 0x6c ): /* jpeg */
1332 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1336 case( 0xe0 ): /* NeroDigital: dvd subs */
1337 if( p_track->fmt.i_cat == SPU_ES )
1339 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1344 /* Unknown entry, but don't touch i_fourcc */
1346 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1347 p_decconfig->i_objectTypeIndication,
1348 p_track->i_track_ID );
1351 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1352 if( p_track->fmt.i_extra > 0 )
1354 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1355 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1356 p_track->fmt.i_extra );
1361 switch( p_sample->i_type )
1363 /* qt decoder, send the complete chunk */
1364 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1365 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1366 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1367 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1368 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1369 p_track->fmt.i_extra =
1370 p_sample->data.p_sample_vide->i_qt_image_description;
1371 if( p_track->fmt.i_extra > 0 )
1373 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1374 memcpy( p_track->fmt.p_extra,
1375 p_sample->data.p_sample_vide->p_qt_image_description,
1376 p_track->fmt.i_extra);
1379 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1380 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1381 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1382 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1383 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1384 p_track->fmt.i_extra =
1385 p_sample->data.p_sample_soun->i_qt_description;
1386 if( p_track->fmt.i_extra > 0 )
1388 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1389 memcpy( p_track->fmt.p_extra,
1390 p_sample->data.p_sample_soun->p_qt_description,
1391 p_track->fmt.i_extra);
1395 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1396 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1398 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1402 /* Hack: use a packetizer to reecampsulate data in anexe B format */
1403 msg_Dbg( p_demux, "avcC: size=%d", p_avcC->data.p_avcC->i_avcC );
1404 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1405 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1406 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC, p_track->fmt.i_extra );
1407 p_track->fmt.b_packetized = VLC_FALSE;
1411 msg_Err( p_demux, "missing avcC" );
1423 /* some last initialisation */
1424 switch( p_track->fmt.i_cat )
1427 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1428 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1430 /* fall on display size */
1431 if( p_track->fmt.video.i_width <= 0 )
1432 p_track->fmt.video.i_width = p_track->i_width;
1433 if( p_track->fmt.video.i_height <= 0 )
1434 p_track->fmt.video.i_height = p_track->i_height;
1436 /* Find out apect ratio from display size */
1437 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1438 /* Work-around buggy muxed files */
1439 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1440 p_track->fmt.video.i_aspect =
1441 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1444 p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1445 p_track->fmt.video.i_frame_rate_base = 1;
1447 if( p_track->fmt.video.i_frame_rate &&
1448 (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1449 p_box->data.p_stts->i_entry_count >= 1 )
1451 p_track->fmt.video.i_frame_rate_base =
1452 p_box->data.p_stts->i_sample_delta[0];
1458 p_track->fmt.audio.i_channels =
1459 p_sample->data.p_sample_soun->i_channelcount;
1460 p_track->fmt.audio.i_rate =
1461 p_sample->data.p_sample_soun->i_sampleratehi;
1462 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1463 p_sample->data.p_sample_soun->i_sampleratehi *
1464 p_sample->data.p_sample_soun->i_samplesize;
1465 p_track->fmt.audio.i_bitspersample =
1466 p_sample->data.p_sample_soun->i_samplesize;
1473 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1478 /* given a time it return sample/chunk
1479 * it also update elst field of the track
1481 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1482 int64_t i_start, uint32_t *pi_chunk,
1483 uint32_t *pi_sample )
1485 demux_sys_t *p_sys = p_demux->p_sys;
1488 unsigned int i_sample;
1489 unsigned int i_chunk;
1492 /* FIXME see if it's needed to check p_track->i_chunk_count */
1493 if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1495 return( VLC_EGENERIC );
1498 /* handle elst (find the correct one) */
1499 MP4_TrackSetELST( p_demux, p_track, i_start );
1500 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1502 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1503 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1505 /* now calculate i_start for this elst */
1507 i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1515 /* to track time scale */
1516 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1517 /* add elst offset */
1518 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1519 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1520 elst->i_media_time[p_track->i_elst] > 0 )
1522 i_start += elst->i_media_time[p_track->i_elst];
1525 msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1526 "ms (track)", p_track->i_elst,
1527 i_mvt * 1000 / p_sys->i_timescale,
1528 i_start * 1000 / p_track->i_timescale );
1532 /* convert absolute time to in timescale unit */
1533 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1536 /* we start from sample 0/chunk 0, hope it won't take too much time */
1537 /* *** find good chunk *** */
1538 for( i_chunk = 0; ; i_chunk++ )
1540 if( i_chunk + 1 >= p_track->i_chunk_count )
1542 /* at the end and can't check if i_start in this chunk,
1543 it will be check while searching i_sample */
1544 i_chunk = p_track->i_chunk_count - 1;
1548 if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1549 i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1555 /* *** find sample in the chunk *** */
1556 i_sample = p_track->chunk[i_chunk].i_sample_first;
1557 i_dts = p_track->chunk[i_chunk].i_first_dts;
1558 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1561 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1562 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1565 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1566 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1568 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1573 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1577 i_sample += ( i_start - i_dts ) /
1578 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1583 if( i_sample >= p_track->i_sample_count )
1585 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1586 "(seeking too far) chunk=%d sample=%d",
1587 p_track->i_track_ID, i_chunk, i_sample );
1588 return( VLC_EGENERIC );
1592 /* *** Try to find nearest sync points *** */
1593 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1595 unsigned int i_index;
1597 "track[Id 0x%x] using Sync Sample Box (stss)",
1598 p_track->i_track_ID );
1599 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1601 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1605 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1607 p_stss->data.p_stss->i_sample_number[i_index-1] );
1608 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1609 /* new i_sample is less than old so i_chunk can only decreased */
1610 while( i_chunk > 0 &&
1611 i_sample < p_track->chunk[i_chunk].i_sample_first )
1618 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1620 p_stss->data.p_stss->i_sample_number[i_index] );
1621 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1622 /* new i_sample is more than old so i_chunk can only increased */
1623 while( i_chunk < p_track->i_chunk_count - 1 &&
1624 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1625 p_track->chunk[i_chunk].i_sample_count )
1636 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1637 "Sample Box (stss)", p_track->i_track_ID );
1640 *pi_chunk = i_chunk;
1641 *pi_sample = i_sample;
1646 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1647 unsigned int i_chunk, unsigned int i_sample )
1649 vlc_bool_t b_reselect = VLC_FALSE;
1651 /* now see if actual es is ok */
1652 if( p_track->i_chunk < 0 ||
1653 p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1654 p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1655 p_track->chunk[i_chunk].i_sample_description_index )
1657 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1658 p_track->i_track_ID );
1660 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1661 p_track->p_es, &b_reselect );
1663 es_out_Del( p_demux->out, p_track->p_es );
1665 p_track->p_es = NULL;
1667 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1669 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1670 p_track->i_track_ID );
1672 p_track->b_ok = VLC_FALSE;
1673 p_track->b_selected = VLC_FALSE;
1674 return VLC_EGENERIC;
1678 /* select again the new decoder */
1681 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1684 p_track->i_chunk = i_chunk;
1685 p_track->i_sample = i_sample;
1687 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1690 /****************************************************************************
1692 ****************************************************************************
1693 * Parse track information and create all needed data to run a track
1694 * If it succeed b_ok is set to 1 else to 0
1695 ****************************************************************************/
1696 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1697 MP4_Box_t *p_box_trak )
1699 demux_sys_t *p_sys = p_demux->p_sys;
1701 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1702 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1717 /* hint track unsuported */
1719 /* set default value (-> track unusable) */
1720 p_track->b_ok = VLC_FALSE;
1721 p_track->b_enable = VLC_FALSE;
1722 p_track->b_selected = VLC_FALSE;
1724 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1731 /* do we launch this track by default ? */
1733 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1735 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1736 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1737 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1741 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1744 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1745 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1747 if( ( !p_mdhd )||( !p_hdlr ) )
1752 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1754 for( i = 0; i < 3; i++ )
1756 language[i] = p_mdhd->data.p_mdhd->i_language[i];
1760 switch( p_hdlr->data.p_hdlr->i_handler_type )
1762 case( FOURCC_soun ):
1763 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1767 p_track->fmt.i_cat = AUDIO_ES;
1770 case( FOURCC_vide ):
1771 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1775 p_track->fmt.i_cat = VIDEO_ES;
1778 case( FOURCC_text ):
1779 case( FOURCC_subp ):
1780 p_track->fmt.i_cat = SPU_ES;
1787 p_track->i_elst = 0;
1788 p_track->i_elst_time = 0;
1789 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1791 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1794 msg_Warn( p_demux, "elst box found" );
1795 for( i = 0; i < elst->i_entry_count; i++ )
1797 msg_Dbg( p_demux, " - [%d] duration="I64Fd"ms media time="I64Fd
1798 "ms) rate=%d.%d", i,
1799 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1800 elst->i_media_time[i] >= 0 ?
1801 elst->i_media_time[i] * 1000 / p_track->i_timescale : -1,
1802 elst->i_media_rate_integer[i],
1803 elst->i_media_rate_fraction[i] );
1810 p_dinf = MP4_BoxGet( p_minf, "dinf" );
1812 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1813 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1818 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1819 p_track->b_drms = p_drms != NULL;
1820 p_track->p_drms = p_track->b_drms ?
1821 p_drms->data.p_sample_soun->p_drms : NULL;
1824 if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1826 p_track->fmt.psz_language = strdup( language );
1829 p_udta = MP4_BoxGet( p_box_trak, "udta" );
1832 MP4_Box_t *p_0xa9xxx;
1833 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1834 p_0xa9xxx = p_0xa9xxx->p_next )
1836 switch( p_0xa9xxx->i_type )
1838 case FOURCC_0xa9nam:
1839 p_track->fmt.psz_description =
1840 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1846 /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1847 if( p_track->fmt.i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1849 MP4_Box_t *p_sample;
1851 p_sample = MP4_BoxGet( p_track->p_stsd, "[0]" );
1852 if( p_sample && p_sample->data.p_sample_soun)
1854 MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1855 if( p_soun->i_qt_version == 0 &&
1856 p_track->i_timescale != p_soun->i_sampleratehi )
1859 "i_timescale ("I64Fu") != i_sampleratehi (%u) with "
1861 "Making both equal. (report any problem)",
1862 p_track->i_timescale, p_soun->i_sampleratehi );
1864 if( p_soun->i_sampleratehi )
1865 p_track->i_timescale = p_soun->i_sampleratehi;
1867 p_soun->i_sampleratehi = p_track->i_timescale;
1872 /* Create chunk index table and sample index table */
1873 if( TrackCreateChunksIndex( p_demux,p_track ) ||
1874 TrackCreateSamplesIndex( p_demux, p_track ) )
1876 return; /* cannot create chunks index */
1879 p_track->i_chunk = 0;
1880 p_track->i_sample = 0;
1883 if( TrackCreateES( p_demux,
1884 p_track, p_track->i_chunk,
1887 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1888 p_track->i_track_ID );
1895 for( i = 0; i < p_track->i_chunk_count; i++ )
1897 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1898 i, p_track->chunk[i].i_sample_count,
1899 p_track->chunk[i].i_first_dts );
1904 p_track->b_ok = VLC_TRUE;
1907 /****************************************************************************
1909 ****************************************************************************
1910 * Destroy a track created by MP4_TrackCreate.
1911 ****************************************************************************/
1912 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1914 unsigned int i_chunk;
1916 p_track->b_ok = VLC_FALSE;
1917 p_track->b_enable = VLC_FALSE;
1918 p_track->b_selected = VLC_FALSE;
1920 es_format_Clean( &p_track->fmt );
1922 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1924 if( p_track->chunk )
1926 FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1927 FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1929 FREE(p_track->chunk[i_chunk].p_sample_count_pts);
1930 FREE(p_track->chunk[i_chunk].p_sample_offset_pts );
1933 FREE( p_track->chunk );
1935 if( !p_track->i_sample_size )
1937 FREE( p_track->p_sample_size );
1941 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1944 if( !p_track->b_ok )
1946 return VLC_EGENERIC;
1949 if( p_track->b_selected )
1951 msg_Warn( p_demux, "track[Id 0x%x] already selected",
1952 p_track->i_track_ID );
1956 return MP4_TrackSeek( p_demux, p_track, i_start );
1959 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1961 if( !p_track->b_ok )
1966 if( !p_track->b_selected )
1968 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1969 p_track->i_track_ID );
1974 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1975 p_track->p_es, VLC_FALSE );
1978 p_track->b_selected = VLC_FALSE;
1981 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1987 if( !p_track->b_ok )
1989 return( VLC_EGENERIC );
1992 p_track->b_selected = VLC_FALSE;
1994 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1995 &i_chunk, &i_sample ) )
1997 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1998 p_track->i_track_ID );
1999 return( VLC_EGENERIC );
2002 p_track->b_selected = VLC_TRUE;
2004 if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2007 p_track->b_selected = VLC_TRUE;
2009 return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2014 * 3 types: for audio
2017 #define QT_V0_MAX_SAMPLES 1024
2018 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2021 MP4_Box_data_sample_soun_t *p_soun;
2023 if( p_track->i_sample_size == 0 )
2025 /* most simple case */
2026 return p_track->p_sample_size[p_track->i_sample];
2028 if( p_track->fmt.i_cat != AUDIO_ES )
2030 return p_track->i_sample_size;
2033 p_soun = p_track->p_sample->data.p_sample_soun;
2035 if( p_soun->i_qt_version == 1 )
2037 i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2038 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2040 else if( p_track->i_sample_size > 256 )
2042 /* We do that so we don't read too much data
2043 * (in this case we are likely dealing with compressed data) */
2044 i_size = p_track->i_sample_size;
2048 /* Read a bunch of samples at once */
2049 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2050 ( p_track->i_sample -
2051 p_track->chunk[p_track->i_chunk].i_sample_first );
2053 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2054 i_size = i_samples * p_track->i_sample_size;
2057 //fprintf( stderr, "size=%d\n", i_size );
2061 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2063 unsigned int i_sample;
2066 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2068 if( p_track->i_sample_size )
2070 MP4_Box_data_sample_soun_t *p_soun =
2071 p_track->p_sample->data.p_sample_soun;
2073 if( p_soun->i_qt_version == 0 )
2075 i_pos += ( p_track->i_sample -
2076 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2077 p_track->i_sample_size;
2081 /* we read chunk by chunk */
2087 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2088 i_sample < p_track->i_sample; i_sample++ )
2090 i_pos += p_track->p_sample_size[i_sample];
2097 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2099 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2101 MP4_Box_data_sample_soun_t *p_soun;
2103 p_soun = p_track->p_sample->data.p_sample_soun;
2105 if( p_soun->i_qt_version == 1 )
2107 /* chunk by chunk */
2109 p_track->chunk[p_track->i_chunk].i_sample_first +
2110 p_track->chunk[p_track->i_chunk].i_sample_count;
2112 else if( p_track->i_sample_size > 256 )
2114 /* We do that so we don't read too much data
2115 * (in this case we are likely dealing with compressed data) */
2116 p_track->i_sample += 1;
2121 p_track->i_sample += QT_V0_MAX_SAMPLES;
2122 if( p_track->i_sample >
2123 p_track->chunk[p_track->i_chunk].i_sample_first +
2124 p_track->chunk[p_track->i_chunk].i_sample_count )
2127 p_track->chunk[p_track->i_chunk].i_sample_first +
2128 p_track->chunk[p_track->i_chunk].i_sample_count;
2134 p_track->i_sample++;
2137 if( p_track->i_sample >= p_track->i_sample_count )
2138 return VLC_EGENERIC;
2140 /* Have we changed chunk ? */
2141 if( p_track->i_sample >=
2142 p_track->chunk[p_track->i_chunk].i_sample_first +
2143 p_track->chunk[p_track->i_chunk].i_sample_count )
2145 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2146 p_track->i_sample ) )
2148 msg_Warn( p_demux, "track[0x%x] will be disabled "
2149 "(cannot restart decoder)", p_track->i_track_ID );
2150 MP4_TrackUnselect( p_demux, p_track );
2151 return VLC_EGENERIC;
2155 /* Have we changed elst */
2156 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2158 demux_sys_t *p_sys = p_demux->p_sys;
2159 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2160 int64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2161 p_sys->i_timescale / (int64_t)1000000;
2163 if( p_track->i_elst < elst->i_entry_count &&
2164 i_mvt >= p_track->i_elst_time +
2165 elst->i_segment_duration[p_track->i_elst] )
2167 MP4_TrackSetELST( p_demux, p_track,
2168 MP4_TrackGetDTS( p_demux, p_track ) );
2175 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2178 demux_sys_t *p_sys = p_demux->p_sys;
2179 int i_elst_last = tk->i_elst;
2181 /* handle elst (find the correct one) */
2183 tk->i_elst_time = 0;
2184 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2186 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2187 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2189 for( tk->i_elst = 0; tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2191 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2193 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2197 tk->i_elst_time += i_dur;
2200 if( tk->i_elst >= elst->i_entry_count )
2202 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2203 tk->i_elst = elst->i_entry_count - 1;
2204 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2207 if( elst->i_media_time[tk->i_elst] < 0 )
2210 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2213 if( i_elst_last != tk->i_elst )
2215 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );