1 /*****************************************************************************
2 * mp4.c : MP4 file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004 the VideoLAN team
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
26 #include <stdlib.h> /* malloc(), free() */
29 #include <vlc/input.h>
30 #include <vlc_playlist.h>
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 );
392 playlist_item_t *p_child =
393 playlist_ItemNew( p_playlist,
397 playlist_NodeAddItem( p_playlist, p_child,
398 p_item->pp_parents[0]->i_view,
399 p_item, PLAYLIST_APPEND,
401 playlist_CopyParents( p_item, p_child );
408 /* msg dbg relative ? */
409 char *psz_absolute = alloca( strlen( p_demux->psz_access ) + 3 + strlen( p_demux->psz_path ) + strlen( psz_ref ) + 1);
410 char *end = strrchr( p_demux->psz_path, '/' );
414 int i_len = end + 1 - p_demux->psz_path;
416 strcpy( psz_absolute, p_demux->psz_access );
417 strcat( psz_absolute, "://" );
418 strncat( psz_absolute, p_demux->psz_path, i_len);
422 strcpy( psz_absolute, "" );
424 strcat( psz_absolute, psz_ref );
425 msg_Dbg( p_demux, "adding ref = `%s'", psz_absolute );
428 playlist_item_t *p_child =
429 playlist_ItemNew( p_playlist,
434 playlist_NodeAddItem( p_playlist, p_child,
435 p_item->pp_parents[0]->i_view,
436 p_item, PLAYLIST_APPEND,
438 playlist_CopyParents( p_item, p_child );
446 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
447 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
450 if( b_play == VLC_TRUE )
452 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
453 p_playlist->status.i_view,
454 p_playlist->status.p_item, NULL );
456 vlc_object_release( p_playlist );
460 msg_Err( p_demux, "can't find playlist" );
464 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
468 msg_Err( p_demux, "cannot find /moov/mvhd" );
473 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
474 p_demux->pf_demux = DemuxRef;
480 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
481 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
484 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
486 msg_Err( p_demux, "cannot find any /moov/trak" );
489 msg_Dbg( p_demux, "find %d track%c",
491 p_sys->i_tracks ? 's':' ' );
493 /* allocate memory */
494 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
495 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
497 /* now process each track and extract all usefull information */
498 for( i = 0; i < p_sys->i_tracks; i++ )
500 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
501 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
503 if( p_sys->track[i].b_ok )
506 switch( p_sys->track[i].fmt.i_cat )
515 psz_cat = "subtitle";
523 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
524 p_sys->track[i].i_track_ID, psz_cat,
525 p_sys->track[i].b_enable ? "enable":"disable",
526 p_sys->track[i].fmt.psz_language ?
527 p_sys->track[i].fmt.psz_language : "undef" );
531 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
532 p_sys->track[i].i_track_ID );
541 MP4_BoxFree( p_demux->s, p_sys->p_root );
547 /*****************************************************************************
548 * Demux: read packet and send them to decoders
549 *****************************************************************************
550 * TODO check for newly selected track (ie audio upt to now )
551 *****************************************************************************/
552 static int Demux( demux_t *p_demux )
554 demux_sys_t *p_sys = p_demux->p_sys;
555 unsigned int i_track;
558 unsigned int i_track_selected;
560 /* check for newly selected/unselected track */
561 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
564 mp4_track_t *tk = &p_sys->track[i_track];
568 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
573 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
575 if( tk->b_selected && !b )
577 MP4_TrackUnselect( p_demux, tk );
579 else if( !tk->b_selected && b)
581 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
590 if( i_track_selected <= 0 )
592 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
593 if( p_sys->i_timescale > 0 )
595 int64_t i_length = (mtime_t)1000000 *
596 (mtime_t)p_sys->i_duration /
597 (mtime_t)p_sys->i_timescale;
598 if( MP4_GetMoviePTS( p_sys ) >= i_length )
603 msg_Warn( p_demux, "no track selected, exiting..." );
607 /* first wait for the good time to read a packet */
608 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
610 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
612 /* we will read 100ms for each stream so ...*/
613 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
615 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
617 mp4_track_t *tk = &p_sys->track[i_track];
619 if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
624 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
627 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
628 MP4_TrackGetDTS( p_demux, tk ),
629 MP4_GetMoviePTS( p_sys ) );
632 if( MP4_TrackSampleSize( tk ) > 0 )
638 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
640 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
642 MP4_TrackUnselect( p_demux, tk );
648 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
650 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
652 MP4_TrackUnselect( p_demux, tk );
656 if( tk->b_drms && tk->p_drms )
658 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
661 else if( tk->fmt.i_cat == SPU_ES )
663 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
664 p_block->i_buffer >= 2 )
666 uint16_t i_size = GetWBE( p_block->p_buffer );
668 if( i_size + 2 <= p_block->i_buffer )
671 /* remove the length field, and append a '\0' */
672 memmove( &p_block->p_buffer[0],
673 &p_block->p_buffer[2], i_size );
674 p_block->p_buffer[i_size] = '\0';
675 p_block->i_buffer = i_size + 1;
677 /* convert \r -> \n */
678 while( ( p = strchr( p_block->p_buffer, '\r' ) ) )
686 p_block->i_buffer = 0;
691 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
693 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
695 p_block->i_pts = p_block->i_dts + i_delta;
696 else if( tk->fmt.i_cat != VIDEO_ES )
697 p_block->i_pts = p_block->i_dts;
701 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
702 es_out_Send( p_demux->out, tk->p_es, p_block );
706 if( MP4_TrackNextSample( p_demux, tk ) )
715 /*****************************************************************************
716 * Seek: Got to i_date
717 ******************************************************************************/
718 static int Seek( demux_t *p_demux, mtime_t i_date )
720 demux_sys_t *p_sys = p_demux->p_sys;
721 unsigned int i_track;
723 /* First update update global time */
724 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
725 p_sys->i_pcr = i_date;
727 /* Now for each stream try to go to this time */
728 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
730 mp4_track_t *tk = &p_sys->track[i_track];
731 MP4_TrackSeek( p_demux, tk, i_date );
736 /*****************************************************************************
738 *****************************************************************************/
739 static int Control( demux_t *p_demux, int i_query, va_list args )
741 demux_sys_t *p_sys = p_demux->p_sys;
748 case DEMUX_GET_POSITION:
749 pf = (double*)va_arg( args, double * );
750 if( p_sys->i_duration > 0 )
752 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
760 case DEMUX_SET_POSITION:
761 f = (double)va_arg( args, double );
762 if( p_sys->i_timescale > 0 )
764 i64 = (int64_t)( f * (double)1000000 *
765 (double)p_sys->i_duration /
766 (double)p_sys->i_timescale );
767 return Seek( p_demux, i64 );
769 else return VLC_SUCCESS;
772 pi64 = (int64_t*)va_arg( args, int64_t * );
773 if( p_sys->i_timescale > 0 )
775 *pi64 = (mtime_t)1000000 *
776 (mtime_t)p_sys->i_time /
777 (mtime_t)p_sys->i_timescale;
783 i64 = (int64_t)va_arg( args, int64_t );
784 return Seek( p_demux, i64 );
786 case DEMUX_GET_LENGTH:
787 pi64 = (int64_t*)va_arg( args, int64_t * );
788 if( p_sys->i_timescale > 0 )
790 *pi64 = (mtime_t)1000000 *
791 (mtime_t)p_sys->i_duration /
792 (mtime_t)p_sys->i_timescale;
798 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
803 vlc_meta_t **pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
805 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
806 MP4_Box_t *p_0xa9xxx;
811 *pp_meta = meta = vlc_meta_New();
812 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
813 p_0xa9xxx = p_0xa9xxx->p_next )
815 switch( p_0xa9xxx->i_type )
817 case FOURCC_0xa9nam: /* Full name */
818 vlc_meta_Add( meta, VLC_META_TITLE,
819 p_0xa9xxx->data.p_0xa9xxx->psz_text );
822 vlc_meta_Add( meta, VLC_META_AUTHOR,
823 p_0xa9xxx->data.p_0xa9xxx->psz_text );
826 vlc_meta_Add( meta, VLC_META_ARTIST,
827 p_0xa9xxx->data.p_0xa9xxx->psz_text );
830 vlc_meta_Add( meta, VLC_META_COPYRIGHT,
831 p_0xa9xxx->data.p_0xa9xxx->psz_text );
833 case FOURCC_0xa9day: /* Creation Date */
834 vlc_meta_Add( meta, VLC_META_DATE,
835 p_0xa9xxx->data.p_0xa9xxx->psz_text );
837 case FOURCC_0xa9des: /* Description */
838 vlc_meta_Add( meta, VLC_META_DESCRIPTION,
839 p_0xa9xxx->data.p_0xa9xxx->psz_text );
841 case FOURCC_0xa9gen: /* Genre */
842 vlc_meta_Add( meta, VLC_META_GENRE,
843 p_0xa9xxx->data.p_0xa9xxx->psz_text );
847 case FOURCC_0xa9inf: /* Information */
848 case FOURCC_0xa9alb: /* Album */
849 case FOURCC_0xa9dir: /* Director */
850 case FOURCC_0xa9dis: /* Disclaimer */
851 case FOURCC_0xa9enc: /* Encoded By */
852 case FOURCC_0xa9trk: /* Track */
853 case FOURCC_0xa9cmt: /* Commment */
854 case FOURCC_0xa9url: /* URL */
855 case FOURCC_0xa9req: /* Requirements */
856 case FOURCC_0xa9fmt: /* Original Format */
857 case FOURCC_0xa9dsa: /* Display Source As */
858 case FOURCC_0xa9hst: /* Host Computer */
859 case FOURCC_0xa9prd: /* Producer */
860 case FOURCC_0xa9prf: /* Performers */
861 case FOURCC_0xa9ope: /* Original Performer */
862 case FOURCC_0xa9src: /* Providers Source Content */
863 case FOURCC_0xa9wrt: /* Writer */
864 case FOURCC_0xa9com: /* Composer */
865 case FOURCC_WLOC: /* Window Location */
866 /* TODO one day, but they aren't really meaningfull */
876 case DEMUX_GET_TITLE_INFO:
877 case DEMUX_SET_NEXT_DEMUX_TIME:
878 case DEMUX_SET_GROUP:
882 msg_Warn( p_demux, "control query unimplemented !!!" );
887 /*****************************************************************************
888 * Close: frees unused data
889 *****************************************************************************/
890 static void Close ( vlc_object_t * p_this )
892 unsigned int i_track;
893 demux_t * p_demux = (demux_t *)p_this;
894 demux_sys_t *p_sys = p_demux->p_sys;
896 msg_Dbg( p_demux, "freeing all memory" );
898 MP4_BoxFree( p_demux->s, p_sys->p_root );
899 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
901 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
903 FREE( p_sys->track );
910 /****************************************************************************
911 * Local functions, specific to vlc
912 ****************************************************************************/
914 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
915 static int TrackCreateChunksIndex( demux_t *p_demux,
916 mp4_track_t *p_demux_track )
918 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
921 unsigned int i_chunk;
922 unsigned int i_index, i_last;
924 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
925 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
926 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
928 return( VLC_EGENERIC );
931 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
932 if( !p_demux_track->i_chunk_count )
934 msg_Warn( p_demux, "no chunk defined" );
935 return( VLC_EGENERIC );
937 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
938 sizeof( mp4_chunk_t ) );
940 /* first we read chunk offset */
941 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
943 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
945 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
948 ck->p_sample_count_dts = NULL;
949 ck->p_sample_delta_dts = NULL;
950 ck->p_sample_count_pts = NULL;
951 ck->p_sample_offset_pts = NULL;
954 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
955 to be used for the sample XXX begin to 1
956 We construct it begining at the end */
957 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
958 i_index = p_stsc->data.p_stsc->i_entry_count;
961 msg_Warn( p_demux, "cannot read chunk table or table empty" );
962 return( VLC_EGENERIC );
967 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
968 i_chunk < i_last; i_chunk++ )
970 p_demux_track->chunk[i_chunk].i_sample_description_index =
971 p_stsc->data.p_stsc->i_sample_description_index[i_index];
972 p_demux_track->chunk[i_chunk].i_sample_count =
973 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
975 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
978 p_demux_track->chunk[0].i_sample_first = 0;
979 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
981 p_demux_track->chunk[i_chunk].i_sample_first =
982 p_demux_track->chunk[i_chunk-1].i_sample_first +
983 p_demux_track->chunk[i_chunk-1].i_sample_count;
986 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
987 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
992 static int TrackCreateSamplesIndex( demux_t *p_demux,
993 mp4_track_t *p_demux_track )
996 MP4_Box_data_stsz_t *stsz;
997 MP4_Box_data_stts_t *stts;
998 /* TODO use also stss and stsh table for seeking */
999 /* FIXME use edit table */
1004 int64_t i_index_sample_used;
1009 * Gives the sample size for each samples. There is also a stz2 table
1010 * (compressed form) that we need to implement TODO */
1011 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1014 /* FIXME and stz2 */
1015 msg_Warn( p_demux, "cannot find STSZ box" );
1016 return VLC_EGENERIC;
1018 stsz = p_box->data.p_stsz;
1021 * Gives mapping between sample and decoding time
1023 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1026 msg_Warn( p_demux, "cannot find STTS box" );
1027 return VLC_EGENERIC;
1029 stts = p_box->data.p_stts;
1031 /* Use stsz table to create a sample number -> sample size table */
1032 p_demux_track->i_sample_count = stsz->i_sample_count;
1033 if( stsz->i_sample_size )
1035 /* 1: all sample have the same size, so no need to construct a table */
1036 p_demux_track->i_sample_size = stsz->i_sample_size;
1037 p_demux_track->p_sample_size = NULL;
1041 /* 2: each sample can have a different size */
1042 p_demux_track->i_sample_size = 0;
1043 p_demux_track->p_sample_size =
1044 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1046 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1048 p_demux_track->p_sample_size[i_sample] =
1049 stsz->i_entry_size[i_sample];
1053 /* Use stts table to create a sample number -> dts table.
1054 * XXX: if we don't want to waste too much memory, we can't expand
1055 * the box! so each chunk will contain an "extract" of this table
1056 * for fast research (problem with raw stream where a sample is sometime
1057 * just channels*bits_per_sample/8 */
1060 i_index = 0; i_index_sample_used = 0;
1061 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1063 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1064 int64_t i_entry, i_sample_count, i;
1067 ck->i_first_dts = i_last_dts;
1069 /* count how many entries are needed for this chunk
1070 * for p_sample_delta_dts and p_sample_count_dts */
1071 i_sample_count = ck->i_sample_count;
1074 while( i_sample_count > 0 )
1076 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1077 /* don't count already used sample in this entry */
1079 i_sample_count += i_index_sample_used;
1085 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1086 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1089 i_sample_count = ck->i_sample_count;
1090 for( i = 0; i < i_entry; i++ )
1095 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1097 i_used = __MIN( i_rest, i_sample_count );
1099 i_index_sample_used += i_used;
1100 i_sample_count -= i_used;
1102 ck->p_sample_count_dts[i] = i_used;
1103 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1105 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1107 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1110 i_index_sample_used = 0;
1116 * Gives the delta between decoding time (dts) and composition table (pts)
1118 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1121 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1123 msg_Warn( p_demux, "CTTS table" );
1125 /* Create pts-dts table per chunk */
1126 i_index = 0; i_index_sample_used = 0;
1127 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1129 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1130 int64_t i_entry, i_sample_count, i;
1132 /* count how many entries are needed for this chunk
1133 * for p_sample_delta_dts and p_sample_count_dts */
1134 i_sample_count = ck->i_sample_count;
1137 while( i_sample_count > 0 )
1139 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1141 /* don't count already used sample in this entry */
1143 i_sample_count += i_index_sample_used;
1149 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1150 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1153 i_sample_count = ck->i_sample_count;
1154 for( i = 0; i < i_entry; i++ )
1159 i_rest = ctts->i_sample_count[i_index] -
1160 i_index_sample_used;
1162 i_used = __MIN( i_rest, i_sample_count );
1164 i_index_sample_used += i_used;
1165 i_sample_count -= i_used;
1167 ck->p_sample_count_pts[i] = i_used;
1168 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1170 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1173 i_index_sample_used = 0;
1179 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1180 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1181 i_last_dts / p_demux_track->i_timescale );
1188 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1190 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1191 unsigned int i_chunk, es_out_id_t **pp_es )
1193 MP4_Box_t *p_sample;
1199 if( !p_track->chunk[i_chunk].i_sample_description_index )
1201 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1202 p_track->i_track_ID );
1203 return VLC_EGENERIC;
1206 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1207 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1210 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1212 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1213 p_track->i_track_ID );
1214 return VLC_EGENERIC;
1217 p_track->p_sample = p_sample;
1219 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1221 MP4_Box_data_sample_soun_t *p_soun;
1223 p_soun = p_sample->data.p_sample_soun;
1225 if( p_soun->i_qt_version == 0 )
1227 switch( p_sample->i_type )
1229 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1230 p_soun->i_qt_version = 1;
1231 p_soun->i_sample_per_packet = 64;
1232 p_soun->i_bytes_per_packet = 34;
1233 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1234 p_soun->i_bytes_per_sample = 2;
1236 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1237 p_soun->i_qt_version = 1;
1238 p_soun->i_sample_per_packet = 6;
1239 p_soun->i_bytes_per_packet = 2;
1240 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1241 p_soun->i_bytes_per_sample = 2;
1243 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1244 p_soun->i_qt_version = 1;
1245 p_soun->i_sample_per_packet = 12;
1246 p_soun->i_bytes_per_packet = 2;
1247 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1248 p_soun->i_bytes_per_sample = 2;
1250 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1251 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1252 p_soun->i_samplesize = 8;
1259 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1261 p_soun->i_qt_version = 0;
1266 /* It's a little ugly but .. there are special cases */
1267 switch( p_sample->i_type )
1269 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1270 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1271 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1273 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1274 p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1276 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1277 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1280 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1281 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1282 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1283 /* FIXME UTF-8 doesn't work here ? */
1284 /* p_track->fmt.subs.psz_encoding = strdup( "UTF-8" ); */
1288 p_track->fmt.i_codec = p_sample->i_type;
1292 /* now see if esds is present and if so create a data packet
1293 with decoder_specific_info */
1294 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1295 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1296 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1297 ( p_esds->data.p_esds )&&
1300 /* First update information based on i_objectTypeIndication */
1301 switch( p_decconfig->i_objectTypeIndication )
1303 case( 0x20 ): /* MPEG4 VIDEO */
1304 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1307 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1314 case( 0x65): /* MPEG2 video */
1315 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1317 /* Theses are MPEG2-AAC */
1318 case( 0x66): /* main profile */
1319 case( 0x67): /* Low complexity profile */
1320 case( 0x68): /* Scaleable Sampling rate profile */
1321 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1323 /* true MPEG 2 audio */
1325 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1327 case( 0x6a): /* MPEG1 video */
1328 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1330 case( 0x6b): /* MPEG1 audio */
1331 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1333 case( 0x6c ): /* jpeg */
1334 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1338 case( 0xe0 ): /* NeroDigital: dvd subs */
1339 if( p_track->fmt.i_cat == SPU_ES )
1341 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1346 /* Unknown entry, but don't touch i_fourcc */
1348 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1349 p_decconfig->i_objectTypeIndication,
1350 p_track->i_track_ID );
1353 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1354 if( p_track->fmt.i_extra > 0 )
1356 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1357 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1358 p_track->fmt.i_extra );
1363 switch( p_sample->i_type )
1365 /* qt decoder, send the complete chunk */
1366 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1367 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1368 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1369 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1370 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1371 p_track->fmt.i_extra =
1372 p_sample->data.p_sample_vide->i_qt_image_description;
1373 if( p_track->fmt.i_extra > 0 )
1375 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1376 memcpy( p_track->fmt.p_extra,
1377 p_sample->data.p_sample_vide->p_qt_image_description,
1378 p_track->fmt.i_extra);
1381 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1382 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1383 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1384 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1385 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1386 p_track->fmt.i_extra =
1387 p_sample->data.p_sample_soun->i_qt_description;
1388 if( p_track->fmt.i_extra > 0 )
1390 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1391 memcpy( p_track->fmt.p_extra,
1392 p_sample->data.p_sample_soun->p_qt_description,
1393 p_track->fmt.i_extra);
1397 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1398 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1400 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "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,
1407 p_track->fmt.i_extra );
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 unsupported */
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 );