1 /*****************************************************************************
2 * mp4.c : MP4 file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004 the VideoLAN team
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
26 #include <stdlib.h> /* malloc(), free() */
29 #include <vlc/input.h>
30 #include <vlc_playlist.h>
39 #define uint64_t int64_t
42 /*****************************************************************************
44 *****************************************************************************/
45 static int Open ( vlc_object_t * );
46 static void Close( vlc_object_t * );
49 set_category( CAT_INPUT );
50 set_subcategory( SUBCAT_INPUT_DEMUX );
51 set_description( _("MP4 stream demuxer") );
52 set_capability( "demux2", 242 );
53 set_callbacks( Open, Close );
56 /*****************************************************************************
58 *****************************************************************************/
59 static int Demux ( demux_t * );
60 static int DemuxRef( demux_t *p_demux ){ return 0;}
61 static int Seek ( demux_t *, mtime_t );
62 static int Control ( demux_t *, int, va_list );
64 /* Contain all information about a chunk */
67 uint64_t i_offset; /* absolute position of this chunk in the file */
68 uint32_t i_sample_description_index; /* index for SampleEntry to use */
69 uint32_t i_sample_count; /* how many samples in this chunk */
70 uint32_t i_sample_first; /* index of the first sample in this chunk */
72 /* now provide way to calculate pts, dts, and offset without to
73 much memory and with fast acces */
75 /* with this we can calculate dts/pts without waste memory */
77 uint32_t *p_sample_count_dts;
78 uint32_t *p_sample_delta_dts; /* dts delta */
80 uint32_t *p_sample_count_pts;
81 int32_t *p_sample_offset_pts; /* pts-dts */
83 /* TODO if needed add pts
84 but quickly *add* support for edts and seeking */
88 /* Contain all needed information for read all track with vlc */
91 int i_track_ID; /* this should be unique */
93 int b_ok; /* The track is usable */
94 int b_enable; /* is the trak enable by default */
95 vlc_bool_t b_selected; /* is the trak being played */
100 /* display size only ! */
104 /* more internal data */
105 uint64_t i_timescale; /* time scale for this track only */
108 int i_elst; /* current elst */
109 int64_t i_elst_time; /* current elst start time (in movie time scale)*/
110 MP4_Box_t *p_elst; /* elst (could be NULL) */
112 /* give the next sample to read, i_chunk is to find quickly where
113 the sample is located */
114 uint32_t i_sample; /* next sample to read */
115 uint32_t i_chunk; /* chunk where next sample is stored */
116 /* total count of chunk and sample */
117 uint32_t i_chunk_count;
118 uint32_t i_sample_count;
120 mp4_chunk_t *chunk; /* always defined for each chunk */
122 /* sample size, p_sample_size defined only if i_sample_size == 0
123 else i_sample_size is size for all sample */
124 uint32_t i_sample_size;
125 uint32_t *p_sample_size; /* XXX perhaps add file offset if take
126 too much time to do sumations each time*/
128 MP4_Box_t *p_stbl; /* will contain all timing information */
129 MP4_Box_t *p_stsd; /* will contain all data to initialize decoder */
130 MP4_Box_t *p_sample;/* point on actual sdsd */
140 MP4_Box_t *p_root; /* container for the whole file */
144 uint64_t i_time; /* time position of the presentation
145 * in movie timescale */
146 uint64_t i_timescale; /* movie time scale */
147 uint64_t i_duration; /* movie duration */
148 unsigned int i_tracks; /* number of tracks */
149 mp4_track_t *track; /* array of track */
152 /*****************************************************************************
153 * Declaration of local function
154 *****************************************************************************/
155 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *);
156 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
158 static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
159 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
161 static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
163 static uint64_t MP4_TrackGetPos ( mp4_track_t * );
164 static int MP4_TrackSampleSize( mp4_track_t * );
165 static int MP4_TrackNextSample( demux_t *, mp4_track_t * );
166 static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
168 /* Return time in s of a track */
169 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
171 #define chunk p_track->chunk[p_track->i_chunk]
173 unsigned int i_index = 0;
174 unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
175 int64_t i_dts = chunk.i_first_dts;
177 while( i_sample > 0 )
179 if( i_sample > chunk.p_sample_count_dts[i_index] )
181 i_dts += chunk.p_sample_count_dts[i_index] *
182 chunk.p_sample_delta_dts[i_index];
183 i_sample -= chunk.p_sample_count_dts[i_index];
188 i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
196 /* now handle elst */
197 if( p_track->p_elst )
199 demux_sys_t *p_sys = p_demux->p_sys;
200 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
202 /* convert to offset */
203 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
204 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
205 elst->i_media_time[p_track->i_elst] > 0 )
207 i_dts -= elst->i_media_time[p_track->i_elst];
210 /* add i_elst_time */
211 i_dts += p_track->i_elst_time * p_track->i_timescale /
214 if( i_dts < 0 ) i_dts = 0;
217 return I64C(1000000) * i_dts / p_track->i_timescale;
220 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
222 mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
223 unsigned int i_index = 0;
224 unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
226 if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
229 for( i_index = 0;; i_index++ )
231 if( i_sample < ck->p_sample_count_pts[i_index] )
232 return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
233 (int64_t)p_track->i_timescale;
235 i_sample -= ck->p_sample_count_pts[i_index];
239 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
241 return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
244 #define FREE( p ) if( p ) { free( p ); (p) = NULL;}
246 /*****************************************************************************
247 * Open: check file and initializes MP4 structures
248 *****************************************************************************/
249 static int Open( vlc_object_t * p_this )
251 demux_t *p_demux = (demux_t *)p_this;
262 vlc_bool_t b_seekable;
264 /* A little test to see if it could be a mp4 */
265 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
267 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
278 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
285 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
288 msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
292 /*Set exported functions */
293 p_demux->pf_demux = Demux;
294 p_demux->pf_control = Control;
296 /* create our structure that will contains all data */
297 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
298 memset( p_sys, 0, sizeof( demux_sys_t ) );
300 /* Now load all boxes ( except raw data ) */
301 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
303 msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
307 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
309 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
311 switch( p_ftyp->data.p_ftyp->i_major_brand )
315 "ISO Media file (isom) version %d.",
316 p_ftyp->data.p_ftyp->i_minor_version );
320 "unrecognized major file specification (%4.4s).",
321 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
327 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
330 /* the file need to have one moov box */
331 if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
333 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
337 msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
340 /* we have a free box as a moov, rename it */
341 p_foov->i_type = FOURCC_moov;
344 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
346 playlist_t *p_playlist;
347 playlist_item_t *p_item;
348 int i_count = MP4_BoxCount( p_rmra, "rmda" );
350 vlc_bool_t b_play = VLC_FALSE;
352 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
355 (playlist_t *)vlc_object_find( p_demux,
360 p_item = playlist_LockItemGetByInput( p_playlist,
361 ((input_thread_t *)p_demux->p_parent)->input.p_item );
362 playlist_ItemToNode( p_playlist, p_item );
364 for( i = 0; i < i_count; i++ )
366 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
370 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
374 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
376 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
377 psz_ref, (char*)&i_ref_type );
379 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
381 if( strstr( psz_ref, "qt5gateQT" ) )
383 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
386 if( !strncmp( psz_ref, "http://", 7 ) ||
387 !strncmp( psz_ref, "rtsp://", 7 ) )
389 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
390 msg_Err( p_demux, "REF is broken (fix playlist") ;
394 playlist_item_t *p_child =
395 playlist_ItemNew( p_playlist,
399 playlist_NodeAddItem( p_playlist, p_child,
400 p_item->pp_parents[0]->i_view,
401 p_item, PLAYLIST_APPEND,
403 playlist_CopyParents( p_item, p_child );
411 /* msg dbg relative ? */
412 int i_path_size = strlen( p_demux->psz_access ) + 3 +
413 strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1;
414 char psz_absolute[i_path_size];
415 char *end = strrchr( p_demux->psz_path, '/' );
419 snprintf( psz_absolute, i_path_size, "%s://%s",
420 p_demux->psz_access, p_demux->psz_path );
424 *psz_absolute = '\0';
426 strcat( psz_absolute, psz_ref );
427 msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
428 msg_Err( p_demux, "Ref broken (fix playlist" );
432 playlist_item_t *p_child =
433 playlist_ItemNew( p_playlist,
438 playlist_NodeAddItem( p_playlist, p_child,
439 p_item->pp_parents[0]->i_view,
440 p_item, PLAYLIST_APPEND,
442 playlist_CopyParents( p_item, p_child );
451 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
452 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
455 if( b_play == VLC_TRUE )
457 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
458 p_playlist->status.p_item, NULL );
460 vlc_object_release( p_playlist );
464 msg_Err( p_demux, "can't find playlist" );
468 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
472 msg_Err( p_demux, "cannot find /moov/mvhd" );
477 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
478 p_demux->pf_demux = DemuxRef;
484 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
485 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
488 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
490 msg_Err( p_demux, "cannot find any /moov/trak" );
493 msg_Dbg( p_demux, "find %d track%c",
495 p_sys->i_tracks ? 's':' ' );
497 /* allocate memory */
498 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
499 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
501 /* now process each track and extract all usefull information */
502 for( i = 0; i < p_sys->i_tracks; i++ )
504 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
505 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
507 if( p_sys->track[i].b_ok )
510 switch( p_sys->track[i].fmt.i_cat )
519 psz_cat = "subtitle";
527 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
528 p_sys->track[i].i_track_ID, psz_cat,
529 p_sys->track[i].b_enable ? "enable":"disable",
530 p_sys->track[i].fmt.psz_language ?
531 p_sys->track[i].fmt.psz_language : "undef" );
535 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
536 p_sys->track[i].i_track_ID );
545 MP4_BoxFree( p_demux->s, p_sys->p_root );
551 /*****************************************************************************
552 * Demux: read packet and send them to decoders
553 *****************************************************************************
554 * TODO check for newly selected track (ie audio upt to now )
555 *****************************************************************************/
556 static int Demux( demux_t *p_demux )
558 demux_sys_t *p_sys = p_demux->p_sys;
559 unsigned int i_track;
562 unsigned int i_track_selected;
564 /* check for newly selected/unselected track */
565 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
568 mp4_track_t *tk = &p_sys->track[i_track];
572 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
577 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
579 if( tk->b_selected && !b )
581 MP4_TrackUnselect( p_demux, tk );
583 else if( !tk->b_selected && b)
585 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
594 if( i_track_selected <= 0 )
596 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
597 if( p_sys->i_timescale > 0 )
599 int64_t i_length = (mtime_t)1000000 *
600 (mtime_t)p_sys->i_duration /
601 (mtime_t)p_sys->i_timescale;
602 if( MP4_GetMoviePTS( p_sys ) >= i_length )
607 msg_Warn( p_demux, "no track selected, exiting..." );
611 /* first wait for the good time to read a packet */
612 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
614 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
616 /* we will read 100ms for each stream so ...*/
617 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
619 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
621 mp4_track_t *tk = &p_sys->track[i_track];
623 if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
628 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
631 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
632 MP4_TrackGetDTS( p_demux, tk ),
633 MP4_GetMoviePTS( p_sys ) );
636 if( MP4_TrackSampleSize( tk ) > 0 )
642 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
644 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
646 MP4_TrackUnselect( p_demux, tk );
652 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
654 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
656 MP4_TrackUnselect( p_demux, tk );
660 if( tk->b_drms && tk->p_drms )
662 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
665 else if( tk->fmt.i_cat == SPU_ES )
667 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
668 p_block->i_buffer >= 2 )
670 uint16_t i_size = GetWBE( p_block->p_buffer );
672 if( i_size + 2 <= p_block->i_buffer )
675 /* remove the length field, and append a '\0' */
676 memmove( &p_block->p_buffer[0],
677 &p_block->p_buffer[2], i_size );
678 p_block->p_buffer[i_size] = '\0';
679 p_block->i_buffer = i_size + 1;
681 /* convert \r -> \n */
682 while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
690 p_block->i_buffer = 0;
695 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
697 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
699 p_block->i_pts = p_block->i_dts + i_delta;
700 else if( tk->fmt.i_cat != VIDEO_ES )
701 p_block->i_pts = p_block->i_dts;
705 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
706 es_out_Send( p_demux->out, tk->p_es, p_block );
710 if( MP4_TrackNextSample( p_demux, tk ) )
719 /*****************************************************************************
720 * Seek: Got to i_date
721 ******************************************************************************/
722 static int Seek( demux_t *p_demux, mtime_t i_date )
724 demux_sys_t *p_sys = p_demux->p_sys;
725 unsigned int i_track;
727 /* First update update global time */
728 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
729 p_sys->i_pcr = i_date;
731 /* Now for each stream try to go to this time */
732 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
734 mp4_track_t *tk = &p_sys->track[i_track];
735 MP4_TrackSeek( p_demux, tk, i_date );
740 /*****************************************************************************
742 *****************************************************************************/
743 static int Control( demux_t *p_demux, int i_query, va_list args )
745 demux_sys_t *p_sys = p_demux->p_sys;
752 case DEMUX_GET_POSITION:
753 pf = (double*)va_arg( args, double * );
754 if( p_sys->i_duration > 0 )
756 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
764 case DEMUX_SET_POSITION:
765 f = (double)va_arg( args, double );
766 if( p_sys->i_timescale > 0 )
768 i64 = (int64_t)( f * (double)1000000 *
769 (double)p_sys->i_duration /
770 (double)p_sys->i_timescale );
771 return Seek( p_demux, i64 );
773 else return VLC_SUCCESS;
776 pi64 = (int64_t*)va_arg( args, int64_t * );
777 if( p_sys->i_timescale > 0 )
779 *pi64 = (mtime_t)1000000 *
780 (mtime_t)p_sys->i_time /
781 (mtime_t)p_sys->i_timescale;
787 i64 = (int64_t)va_arg( args, int64_t );
788 return Seek( p_demux, i64 );
790 case DEMUX_GET_LENGTH:
791 pi64 = (int64_t*)va_arg( args, int64_t * );
792 if( p_sys->i_timescale > 0 )
794 *pi64 = (mtime_t)1000000 *
795 (mtime_t)p_sys->i_duration /
796 (mtime_t)p_sys->i_timescale;
802 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
807 vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
808 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
809 MP4_Box_t *p_0xa9xxx;
814 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
815 p_0xa9xxx = p_0xa9xxx->p_next )
818 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
820 psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
821 if( psz_utf == NULL )
823 /* FIXME FIXME: should convert from whatever the character
824 * encoding of MP4 meta data is to UTF-8. */
825 EnsureUTF8( psz_utf );
827 switch( p_0xa9xxx->i_type )
829 case FOURCC_0xa9nam: /* Full name */
830 vlc_meta_SetArtist( p_meta, psz_utf );
833 vlc_meta_SetAuthor( p_meta, psz_utf );
836 vlc_meta_SetArtist( p_meta, psz_utf );
839 vlc_meta_SetCopyright( p_meta, psz_utf );
841 case FOURCC_0xa9day: /* Creation Date */
842 vlc_meta_SetDate( p_meta, psz_utf );
844 case FOURCC_0xa9des: /* Description */
845 vlc_meta_SetDescription( p_meta, psz_utf );
847 case FOURCC_0xa9gen: /* Genre */
848 vlc_meta_SetGenre( p_meta, psz_utf );
852 case FOURCC_0xa9inf: /* Information */
853 case FOURCC_0xa9alb: /* Album */
854 case FOURCC_0xa9dir: /* Director */
855 case FOURCC_0xa9dis: /* Disclaimer */
856 case FOURCC_0xa9enc: /* Encoded By */
857 case FOURCC_0xa9trk: /* Track */
858 case FOURCC_0xa9cmt: /* Commment */
859 case FOURCC_0xa9url: /* URL */
860 case FOURCC_0xa9req: /* Requirements */
861 case FOURCC_0xa9fmt: /* Original Format */
862 case FOURCC_0xa9dsa: /* Display Source As */
863 case FOURCC_0xa9hst: /* Host Computer */
864 case FOURCC_0xa9prd: /* Producer */
865 case FOURCC_0xa9prf: /* Performers */
866 case FOURCC_0xa9ope: /* Original Performer */
867 case FOURCC_0xa9src: /* Providers Source Content */
868 case FOURCC_0xa9wrt: /* Writer */
869 case FOURCC_0xa9com: /* Composer */
870 case FOURCC_WLOC: /* Window Location */
871 /* TODO one day, but they aren't really meaningfull */
882 case DEMUX_GET_TITLE_INFO:
883 case DEMUX_SET_NEXT_DEMUX_TIME:
884 case DEMUX_SET_GROUP:
888 msg_Warn( p_demux, "control query %u unimplemented", i_query );
893 /*****************************************************************************
894 * Close: frees unused data
895 *****************************************************************************/
896 static void Close ( vlc_object_t * p_this )
898 unsigned int i_track;
899 demux_t * p_demux = (demux_t *)p_this;
900 demux_sys_t *p_sys = p_demux->p_sys;
902 msg_Dbg( p_demux, "freeing all memory" );
904 MP4_BoxFree( p_demux->s, p_sys->p_root );
905 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
907 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
909 FREE( p_sys->track );
916 /****************************************************************************
917 * Local functions, specific to vlc
918 ****************************************************************************/
920 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
921 static int TrackCreateChunksIndex( demux_t *p_demux,
922 mp4_track_t *p_demux_track )
924 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
927 unsigned int i_chunk;
928 unsigned int i_index, i_last;
930 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
931 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
932 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
934 return( VLC_EGENERIC );
937 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
938 if( !p_demux_track->i_chunk_count )
940 msg_Warn( p_demux, "no chunk defined" );
941 return( VLC_EGENERIC );
943 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
944 sizeof( mp4_chunk_t ) );
946 /* first we read chunk offset */
947 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
949 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
951 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
954 ck->p_sample_count_dts = NULL;
955 ck->p_sample_delta_dts = NULL;
956 ck->p_sample_count_pts = NULL;
957 ck->p_sample_offset_pts = NULL;
960 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
961 to be used for the sample XXX begin to 1
962 We construct it begining at the end */
963 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
964 i_index = p_stsc->data.p_stsc->i_entry_count;
967 msg_Warn( p_demux, "cannot read chunk table or table empty" );
968 return( VLC_EGENERIC );
973 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
974 i_chunk < i_last; i_chunk++ )
976 p_demux_track->chunk[i_chunk].i_sample_description_index =
977 p_stsc->data.p_stsc->i_sample_description_index[i_index];
978 p_demux_track->chunk[i_chunk].i_sample_count =
979 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
981 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
984 p_demux_track->chunk[0].i_sample_first = 0;
985 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
987 p_demux_track->chunk[i_chunk].i_sample_first =
988 p_demux_track->chunk[i_chunk-1].i_sample_first +
989 p_demux_track->chunk[i_chunk-1].i_sample_count;
992 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
993 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
998 static int TrackCreateSamplesIndex( demux_t *p_demux,
999 mp4_track_t *p_demux_track )
1002 MP4_Box_data_stsz_t *stsz;
1003 MP4_Box_data_stts_t *stts;
1004 /* TODO use also stss and stsh table for seeking */
1005 /* FIXME use edit table */
1010 int64_t i_index_sample_used;
1015 * Gives the sample size for each samples. There is also a stz2 table
1016 * (compressed form) that we need to implement TODO */
1017 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1020 /* FIXME and stz2 */
1021 msg_Warn( p_demux, "cannot find STSZ box" );
1022 return VLC_EGENERIC;
1024 stsz = p_box->data.p_stsz;
1027 * Gives mapping between sample and decoding time
1029 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1032 msg_Warn( p_demux, "cannot find STTS box" );
1033 return VLC_EGENERIC;
1035 stts = p_box->data.p_stts;
1037 /* Use stsz table to create a sample number -> sample size table */
1038 p_demux_track->i_sample_count = stsz->i_sample_count;
1039 if( stsz->i_sample_size )
1041 /* 1: all sample have the same size, so no need to construct a table */
1042 p_demux_track->i_sample_size = stsz->i_sample_size;
1043 p_demux_track->p_sample_size = NULL;
1047 /* 2: each sample can have a different size */
1048 p_demux_track->i_sample_size = 0;
1049 p_demux_track->p_sample_size =
1050 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1052 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1054 p_demux_track->p_sample_size[i_sample] =
1055 stsz->i_entry_size[i_sample];
1059 /* Use stts table to create a sample number -> dts table.
1060 * XXX: if we don't want to waste too much memory, we can't expand
1061 * the box! so each chunk will contain an "extract" of this table
1062 * for fast research (problem with raw stream where a sample is sometime
1063 * just channels*bits_per_sample/8 */
1066 i_index = 0; i_index_sample_used = 0;
1067 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1069 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1070 int64_t i_entry, i_sample_count, i;
1073 ck->i_first_dts = i_last_dts;
1075 /* count how many entries are needed for this chunk
1076 * for p_sample_delta_dts and p_sample_count_dts */
1077 i_sample_count = ck->i_sample_count;
1080 while( i_sample_count > 0 )
1082 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1083 /* don't count already used sample in this entry */
1085 i_sample_count += i_index_sample_used;
1091 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1092 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1095 i_sample_count = ck->i_sample_count;
1096 for( i = 0; i < i_entry; i++ )
1101 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1103 i_used = __MIN( i_rest, i_sample_count );
1105 i_index_sample_used += i_used;
1106 i_sample_count -= i_used;
1108 ck->p_sample_count_dts[i] = i_used;
1109 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1111 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1113 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1116 i_index_sample_used = 0;
1122 * Gives the delta between decoding time (dts) and composition table (pts)
1124 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1127 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1129 msg_Warn( p_demux, "CTTS table" );
1131 /* Create pts-dts table per chunk */
1132 i_index = 0; i_index_sample_used = 0;
1133 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1135 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1136 int64_t i_entry, i_sample_count, i;
1138 /* count how many entries are needed for this chunk
1139 * for p_sample_delta_dts and p_sample_count_dts */
1140 i_sample_count = ck->i_sample_count;
1143 while( i_sample_count > 0 )
1145 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1147 /* don't count already used sample in this entry */
1149 i_sample_count += i_index_sample_used;
1155 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1156 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1159 i_sample_count = ck->i_sample_count;
1160 for( i = 0; i < i_entry; i++ )
1165 i_rest = ctts->i_sample_count[i_index] -
1166 i_index_sample_used;
1168 i_used = __MIN( i_rest, i_sample_count );
1170 i_index_sample_used += i_used;
1171 i_sample_count -= i_used;
1173 ck->p_sample_count_pts[i] = i_used;
1174 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1176 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1179 i_index_sample_used = 0;
1185 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1186 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1187 i_last_dts / p_demux_track->i_timescale );
1194 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1196 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1197 unsigned int i_chunk, es_out_id_t **pp_es )
1199 MP4_Box_t *p_sample;
1205 if( !p_track->chunk[i_chunk].i_sample_description_index )
1207 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1208 p_track->i_track_ID );
1209 return VLC_EGENERIC;
1212 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1213 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1216 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1218 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1219 p_track->i_track_ID );
1220 return VLC_EGENERIC;
1223 p_track->p_sample = p_sample;
1225 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1227 MP4_Box_data_sample_soun_t *p_soun;
1229 p_soun = p_sample->data.p_sample_soun;
1231 if( p_soun->i_qt_version == 0 )
1233 switch( p_sample->i_type )
1235 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1236 p_soun->i_qt_version = 1;
1237 p_soun->i_sample_per_packet = 64;
1238 p_soun->i_bytes_per_packet = 34;
1239 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1240 p_soun->i_bytes_per_sample = 2;
1242 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1243 p_soun->i_qt_version = 1;
1244 p_soun->i_sample_per_packet = 6;
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( 'M', 'A', 'C', '6' ):
1250 p_soun->i_qt_version = 1;
1251 p_soun->i_sample_per_packet = 12;
1252 p_soun->i_bytes_per_packet = 2;
1253 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1254 p_soun->i_bytes_per_sample = 2;
1256 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1257 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1258 p_soun->i_samplesize = 8;
1265 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1267 p_soun->i_qt_version = 0;
1272 /* It's a little ugly but .. there are special cases */
1273 switch( p_sample->i_type )
1275 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1276 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1277 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1280 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1281 p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1283 /* Buggy files workaround */
1284 if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1285 p_sample->data.p_sample_soun->i_sampleratehi) )
1287 MP4_Box_data_sample_soun_t *p_soun =
1288 p_sample->data.p_sample_soun;
1290 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1291 "(%u), making both equal (report any problem).",
1292 p_track->i_timescale, p_soun->i_sampleratehi );
1294 if( p_soun->i_sampleratehi )
1295 p_track->i_timescale = p_soun->i_sampleratehi;
1297 p_soun->i_sampleratehi = p_track->i_timescale;
1301 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1302 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1305 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1306 case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1307 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1308 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1309 /* FIXME UTF-8 doesn't work here ? */
1310 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1314 p_track->fmt.i_codec = p_sample->i_type;
1318 /* now see if esds is present and if so create a data packet
1319 with decoder_specific_info */
1320 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1321 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1322 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1323 ( p_esds->data.p_esds )&&
1326 /* First update information based on i_objectTypeIndication */
1327 switch( p_decconfig->i_objectTypeIndication )
1329 case( 0x20 ): /* MPEG4 VIDEO */
1330 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1333 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1340 case( 0x65): /* MPEG2 video */
1341 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1343 /* Theses are MPEG2-AAC */
1344 case( 0x66): /* main profile */
1345 case( 0x67): /* Low complexity profile */
1346 case( 0x68): /* Scaleable Sampling rate profile */
1347 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1349 /* true MPEG 2 audio */
1351 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1353 case( 0x6a): /* MPEG1 video */
1354 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1356 case( 0x6b): /* MPEG1 audio */
1357 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1359 case( 0x6c ): /* jpeg */
1360 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1364 case( 0xe0 ): /* NeroDigital: dvd subs */
1365 if( p_track->fmt.i_cat == SPU_ES )
1367 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1368 if( p_track->i_width > 0 )
1369 p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1370 if( p_track->i_height > 0 )
1371 p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1376 /* Unknown entry, but don't touch i_fourcc */
1378 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1379 p_decconfig->i_objectTypeIndication,
1380 p_track->i_track_ID );
1383 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1384 if( p_track->fmt.i_extra > 0 )
1386 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1387 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1388 p_track->fmt.i_extra );
1393 switch( p_sample->i_type )
1395 /* qt decoder, send the complete chunk */
1396 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1397 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1398 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1399 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1400 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1401 p_track->fmt.i_extra =
1402 p_sample->data.p_sample_vide->i_qt_image_description;
1403 if( p_track->fmt.i_extra > 0 )
1405 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1406 memcpy( p_track->fmt.p_extra,
1407 p_sample->data.p_sample_vide->p_qt_image_description,
1408 p_track->fmt.i_extra);
1411 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1412 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1413 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1414 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1415 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1416 p_track->fmt.i_extra =
1417 p_sample->data.p_sample_soun->i_qt_description;
1418 if( p_track->fmt.i_extra > 0 )
1420 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1421 memcpy( p_track->fmt.p_extra,
1422 p_sample->data.p_sample_soun->p_qt_description,
1423 p_track->fmt.i_extra);
1427 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1428 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1430 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1434 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1435 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1436 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1437 p_track->fmt.i_extra );
1441 msg_Err( p_demux, "missing avcC" );
1453 /* some last initialisation */
1454 switch( p_track->fmt.i_cat )
1457 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1458 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1459 p_track->fmt.video.i_bits_per_pixel =
1460 p_sample->data.p_sample_vide->i_depth;
1462 /* fall on display size */
1463 if( p_track->fmt.video.i_width <= 0 )
1464 p_track->fmt.video.i_width = p_track->i_width;
1465 if( p_track->fmt.video.i_height <= 0 )
1466 p_track->fmt.video.i_height = p_track->i_height;
1468 /* Find out apect ratio from display size */
1469 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1470 /* Work-around buggy muxed files */
1471 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1472 p_track->fmt.video.i_aspect =
1473 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1476 p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1477 p_track->fmt.video.i_frame_rate_base = 1;
1479 if( p_track->fmt.video.i_frame_rate &&
1480 (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1481 p_box->data.p_stts->i_entry_count >= 1 )
1483 p_track->fmt.video.i_frame_rate_base =
1484 p_box->data.p_stts->i_sample_delta[0];
1490 p_track->fmt.audio.i_channels =
1491 p_sample->data.p_sample_soun->i_channelcount;
1492 p_track->fmt.audio.i_rate =
1493 p_sample->data.p_sample_soun->i_sampleratehi;
1494 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1495 p_sample->data.p_sample_soun->i_sampleratehi *
1496 p_sample->data.p_sample_soun->i_samplesize;
1497 p_track->fmt.audio.i_bitspersample =
1498 p_sample->data.p_sample_soun->i_samplesize;
1505 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1510 /* given a time it return sample/chunk
1511 * it also update elst field of the track
1513 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1514 int64_t i_start, uint32_t *pi_chunk,
1515 uint32_t *pi_sample )
1517 demux_sys_t *p_sys = p_demux->p_sys;
1520 unsigned int i_sample;
1521 unsigned int i_chunk;
1524 /* FIXME see if it's needed to check p_track->i_chunk_count */
1525 if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1527 return( VLC_EGENERIC );
1530 /* handle elst (find the correct one) */
1531 MP4_TrackSetELST( p_demux, p_track, i_start );
1532 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1534 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1535 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1537 /* now calculate i_start for this elst */
1539 i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1547 /* to track time scale */
1548 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1549 /* add elst offset */
1550 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1551 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1552 elst->i_media_time[p_track->i_elst] > 0 )
1554 i_start += elst->i_media_time[p_track->i_elst];
1557 msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1558 "ms (track)", p_track->i_elst,
1559 i_mvt * 1000 / p_sys->i_timescale,
1560 i_start * 1000 / p_track->i_timescale );
1564 /* convert absolute time to in timescale unit */
1565 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1568 /* we start from sample 0/chunk 0, hope it won't take too much time */
1569 /* *** find good chunk *** */
1570 for( i_chunk = 0; ; i_chunk++ )
1572 if( i_chunk + 1 >= p_track->i_chunk_count )
1574 /* at the end and can't check if i_start in this chunk,
1575 it will be check while searching i_sample */
1576 i_chunk = p_track->i_chunk_count - 1;
1580 if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1581 (uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1587 /* *** find sample in the chunk *** */
1588 i_sample = p_track->chunk[i_chunk].i_sample_first;
1589 i_dts = p_track->chunk[i_chunk].i_first_dts;
1590 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1593 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1594 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1597 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1598 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1600 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1605 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1609 i_sample += ( i_start - i_dts ) /
1610 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1615 if( i_sample >= p_track->i_sample_count )
1617 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1618 "(seeking too far) chunk=%d sample=%d",
1619 p_track->i_track_ID, i_chunk, i_sample );
1620 return( VLC_EGENERIC );
1624 /* *** Try to find nearest sync points *** */
1625 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1627 unsigned int i_index;
1629 "track[Id 0x%x] using Sync Sample Box (stss)",
1630 p_track->i_track_ID );
1631 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1633 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1637 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1639 p_stss->data.p_stss->i_sample_number[i_index-1] );
1640 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1641 /* new i_sample is less than old so i_chunk can only decreased */
1642 while( i_chunk > 0 &&
1643 i_sample < p_track->chunk[i_chunk].i_sample_first )
1650 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1652 p_stss->data.p_stss->i_sample_number[i_index] );
1653 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1654 /* new i_sample is more than old so i_chunk can only increased */
1655 while( i_chunk < p_track->i_chunk_count - 1 &&
1656 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1657 p_track->chunk[i_chunk].i_sample_count )
1668 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1669 "Sample Box (stss)", p_track->i_track_ID );
1672 *pi_chunk = i_chunk;
1673 *pi_sample = i_sample;
1678 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1679 unsigned int i_chunk, unsigned int i_sample )
1681 vlc_bool_t b_reselect = VLC_FALSE;
1683 /* now see if actual es is ok */
1684 if( p_track->i_chunk < 0 ||
1685 p_track->i_chunk >= p_track->i_chunk_count - 1 ||
1686 p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1687 p_track->chunk[i_chunk].i_sample_description_index )
1689 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1690 p_track->i_track_ID );
1692 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1693 p_track->p_es, &b_reselect );
1695 es_out_Del( p_demux->out, p_track->p_es );
1697 p_track->p_es = NULL;
1699 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1701 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1702 p_track->i_track_ID );
1704 p_track->b_ok = VLC_FALSE;
1705 p_track->b_selected = VLC_FALSE;
1706 return VLC_EGENERIC;
1710 /* select again the new decoder */
1713 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1716 p_track->i_chunk = i_chunk;
1717 p_track->i_sample = i_sample;
1719 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1722 /****************************************************************************
1724 ****************************************************************************
1725 * Parse track information and create all needed data to run a track
1726 * If it succeed b_ok is set to 1 else to 0
1727 ****************************************************************************/
1728 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1729 MP4_Box_t *p_box_trak )
1731 demux_sys_t *p_sys = p_demux->p_sys;
1733 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1734 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1749 /* hint track unsupported */
1751 /* set default value (-> track unusable) */
1752 p_track->b_ok = VLC_FALSE;
1753 p_track->b_enable = VLC_FALSE;
1754 p_track->b_selected = VLC_FALSE;
1756 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1763 /* do we launch this track by default ? */
1765 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1767 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1768 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1769 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1773 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1776 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1777 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1779 if( ( !p_mdhd )||( !p_hdlr ) )
1784 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1786 for( i = 0; i < 3; i++ )
1788 language[i] = p_mdhd->data.p_mdhd->i_language[i];
1792 switch( p_hdlr->data.p_hdlr->i_handler_type )
1794 case( FOURCC_soun ):
1795 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1799 p_track->fmt.i_cat = AUDIO_ES;
1802 case( FOURCC_vide ):
1803 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1807 p_track->fmt.i_cat = VIDEO_ES;
1810 case( FOURCC_text ):
1811 case( FOURCC_subp ):
1812 case( FOURCC_tx3g ):
1813 p_track->fmt.i_cat = SPU_ES;
1820 p_track->i_elst = 0;
1821 p_track->i_elst_time = 0;
1822 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1824 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1827 msg_Warn( p_demux, "elst box found" );
1828 for( i = 0; i < elst->i_entry_count; i++ )
1830 msg_Dbg( p_demux, " - [%d] duration="I64Fd"ms media time="I64Fd
1831 "ms) rate=%d.%d", i,
1832 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1833 elst->i_media_time[i] >= 0 ?
1834 (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
1836 elst->i_media_rate_integer[i],
1837 elst->i_media_rate_fraction[i] );
1844 p_dinf = MP4_BoxGet( p_minf, "dinf" );
1846 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1847 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1852 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1853 p_track->b_drms = p_drms != NULL;
1854 p_track->p_drms = p_track->b_drms ?
1855 p_drms->data.p_sample_soun->p_drms : NULL;
1858 if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1860 p_track->fmt.psz_language = strdup( language );
1863 p_udta = MP4_BoxGet( p_box_trak, "udta" );
1866 MP4_Box_t *p_0xa9xxx;
1867 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1868 p_0xa9xxx = p_0xa9xxx->p_next )
1870 switch( p_0xa9xxx->i_type )
1872 case FOURCC_0xa9nam:
1873 p_track->fmt.psz_description =
1874 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1880 /* Create chunk index table and sample index table */
1881 if( TrackCreateChunksIndex( p_demux,p_track ) ||
1882 TrackCreateSamplesIndex( p_demux, p_track ) )
1884 return; /* cannot create chunks index */
1887 p_track->i_chunk = 0;
1888 p_track->i_sample = 0;
1891 if( TrackCreateES( p_demux,
1892 p_track, p_track->i_chunk,
1895 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1896 p_track->i_track_ID );
1903 for( i = 0; i < p_track->i_chunk_count; i++ )
1905 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1906 i, p_track->chunk[i].i_sample_count,
1907 p_track->chunk[i].i_first_dts );
1912 p_track->b_ok = VLC_TRUE;
1915 /****************************************************************************
1917 ****************************************************************************
1918 * Destroy a track created by MP4_TrackCreate.
1919 ****************************************************************************/
1920 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1922 unsigned int i_chunk;
1924 p_track->b_ok = VLC_FALSE;
1925 p_track->b_enable = VLC_FALSE;
1926 p_track->b_selected = VLC_FALSE;
1928 es_format_Clean( &p_track->fmt );
1930 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1932 if( p_track->chunk )
1934 FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1935 FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1937 FREE(p_track->chunk[i_chunk].p_sample_count_pts);
1938 FREE(p_track->chunk[i_chunk].p_sample_offset_pts );
1941 FREE( p_track->chunk );
1943 if( !p_track->i_sample_size )
1945 FREE( p_track->p_sample_size );
1949 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1952 if( !p_track->b_ok )
1954 return VLC_EGENERIC;
1957 if( p_track->b_selected )
1959 msg_Warn( p_demux, "track[Id 0x%x] already selected",
1960 p_track->i_track_ID );
1964 return MP4_TrackSeek( p_demux, p_track, i_start );
1967 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1969 if( !p_track->b_ok )
1974 if( !p_track->b_selected )
1976 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1977 p_track->i_track_ID );
1982 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1983 p_track->p_es, VLC_FALSE );
1986 p_track->b_selected = VLC_FALSE;
1989 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1995 if( !p_track->b_ok )
1997 return( VLC_EGENERIC );
2000 p_track->b_selected = VLC_FALSE;
2002 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2003 &i_chunk, &i_sample ) )
2005 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2006 p_track->i_track_ID );
2007 return( VLC_EGENERIC );
2010 p_track->b_selected = VLC_TRUE;
2012 if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2015 p_track->b_selected = VLC_TRUE;
2017 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2018 p_track->p_es, i_start );
2021 return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2026 * 3 types: for audio
2029 #define QT_V0_MAX_SAMPLES 1024
2030 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2033 MP4_Box_data_sample_soun_t *p_soun;
2035 if( p_track->i_sample_size == 0 )
2037 /* most simple case */
2038 return p_track->p_sample_size[p_track->i_sample];
2040 if( p_track->fmt.i_cat != AUDIO_ES )
2042 return p_track->i_sample_size;
2045 p_soun = p_track->p_sample->data.p_sample_soun;
2047 if( p_soun->i_qt_version == 1 )
2049 i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2050 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2052 else if( p_track->i_sample_size > 256 )
2054 /* We do that so we don't read too much data
2055 * (in this case we are likely dealing with compressed data) */
2056 i_size = p_track->i_sample_size;
2060 /* Read a bunch of samples at once */
2061 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2062 ( p_track->i_sample -
2063 p_track->chunk[p_track->i_chunk].i_sample_first );
2065 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2066 i_size = i_samples * p_track->i_sample_size;
2069 //fprintf( stderr, "size=%d\n", i_size );
2073 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2075 unsigned int i_sample;
2078 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2080 if( p_track->i_sample_size )
2082 MP4_Box_data_sample_soun_t *p_soun =
2083 p_track->p_sample->data.p_sample_soun;
2085 if( p_soun->i_qt_version == 0 )
2087 i_pos += ( p_track->i_sample -
2088 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2089 p_track->i_sample_size;
2093 /* we read chunk by chunk */
2099 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2100 i_sample < p_track->i_sample; i_sample++ )
2102 i_pos += p_track->p_sample_size[i_sample];
2109 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2111 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2113 MP4_Box_data_sample_soun_t *p_soun;
2115 p_soun = p_track->p_sample->data.p_sample_soun;
2117 if( p_soun->i_qt_version == 1 )
2119 /* chunk by chunk */
2121 p_track->chunk[p_track->i_chunk].i_sample_first +
2122 p_track->chunk[p_track->i_chunk].i_sample_count;
2124 else if( p_track->i_sample_size > 256 )
2126 /* We do that so we don't read too much data
2127 * (in this case we are likely dealing with compressed data) */
2128 p_track->i_sample += 1;
2133 p_track->i_sample += QT_V0_MAX_SAMPLES;
2134 if( p_track->i_sample >
2135 p_track->chunk[p_track->i_chunk].i_sample_first +
2136 p_track->chunk[p_track->i_chunk].i_sample_count )
2139 p_track->chunk[p_track->i_chunk].i_sample_first +
2140 p_track->chunk[p_track->i_chunk].i_sample_count;
2146 p_track->i_sample++;
2149 if( p_track->i_sample >= p_track->i_sample_count )
2150 return VLC_EGENERIC;
2152 /* Have we changed chunk ? */
2153 if( p_track->i_sample >=
2154 p_track->chunk[p_track->i_chunk].i_sample_first +
2155 p_track->chunk[p_track->i_chunk].i_sample_count )
2157 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2158 p_track->i_sample ) )
2160 msg_Warn( p_demux, "track[0x%x] will be disabled "
2161 "(cannot restart decoder)", p_track->i_track_ID );
2162 MP4_TrackUnselect( p_demux, p_track );
2163 return VLC_EGENERIC;
2167 /* Have we changed elst */
2168 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2170 demux_sys_t *p_sys = p_demux->p_sys;
2171 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2172 uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2173 p_sys->i_timescale / (int64_t)1000000;
2175 if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2176 i_mvt >= p_track->i_elst_time +
2177 elst->i_segment_duration[p_track->i_elst] )
2179 MP4_TrackSetELST( p_demux, p_track,
2180 MP4_TrackGetDTS( p_demux, p_track ) );
2187 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2190 demux_sys_t *p_sys = p_demux->p_sys;
2191 int i_elst_last = tk->i_elst;
2193 /* handle elst (find the correct one) */
2195 tk->i_elst_time = 0;
2196 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2198 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2199 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2201 for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2203 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2205 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2209 tk->i_elst_time += i_dur;
2212 if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2214 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2215 tk->i_elst = elst->i_entry_count - 1;
2216 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2219 if( elst->i_media_time[tk->i_elst] < 0 )
2222 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2225 if( i_elst_last != tk->i_elst )
2227 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );