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 *****************************************************************************/
30 #include <stdlib.h> /* malloc(), free() */
32 #include <vlc_demux.h>
33 #include <vlc_playlist.h>
35 #include <vlc_charset.h>
43 #define uint64_t int64_t
46 /*****************************************************************************
48 *****************************************************************************/
49 static int Open ( vlc_object_t * );
50 static void Close( vlc_object_t * );
53 set_category( CAT_INPUT );
54 set_subcategory( SUBCAT_INPUT_DEMUX );
55 set_description( _("MP4 stream demuxer") );
56 set_capability( "demux2", 242 );
57 set_callbacks( Open, Close );
60 /*****************************************************************************
62 *****************************************************************************/
63 static int Demux ( demux_t * );
64 static int DemuxRef( demux_t *p_demux ){ return 0;}
65 static int Seek ( demux_t *, mtime_t );
66 static int Control ( demux_t *, int, va_list );
68 /* Contain all information about a chunk */
71 uint64_t i_offset; /* absolute position of this chunk in the file */
72 uint32_t i_sample_description_index; /* index for SampleEntry to use */
73 uint32_t i_sample_count; /* how many samples in this chunk */
74 uint32_t i_sample_first; /* index of the first sample in this chunk */
76 /* now provide way to calculate pts, dts, and offset without to
77 much memory and with fast acces */
79 /* with this we can calculate dts/pts without waste memory */
81 uint32_t *p_sample_count_dts;
82 uint32_t *p_sample_delta_dts; /* dts delta */
84 uint32_t *p_sample_count_pts;
85 int32_t *p_sample_offset_pts; /* pts-dts */
87 /* TODO if needed add pts
88 but quickly *add* support for edts and seeking */
92 /* Contain all needed information for read all track with vlc */
95 int i_track_ID; /* this should be unique */
97 int b_ok; /* The track is usable */
98 int b_enable; /* is the trak enable by default */
99 vlc_bool_t b_selected; /* is the trak being played */
104 /* display size only ! */
108 /* more internal data */
109 uint64_t i_timescale; /* time scale for this track only */
112 int i_elst; /* current elst */
113 int64_t i_elst_time; /* current elst start time (in movie time scale)*/
114 MP4_Box_t *p_elst; /* elst (could be NULL) */
116 /* give the next sample to read, i_chunk is to find quickly where
117 the sample is located */
118 uint32_t i_sample; /* next sample to read */
119 uint32_t i_chunk; /* chunk where next sample is stored */
120 /* total count of chunk and sample */
121 uint32_t i_chunk_count;
122 uint32_t i_sample_count;
124 mp4_chunk_t *chunk; /* always defined for each chunk */
126 /* sample size, p_sample_size defined only if i_sample_size == 0
127 else i_sample_size is size for all sample */
128 uint32_t i_sample_size;
129 uint32_t *p_sample_size; /* XXX perhaps add file offset if take
130 too much time to do sumations each time*/
132 MP4_Box_t *p_stbl; /* will contain all timing information */
133 MP4_Box_t *p_stsd; /* will contain all data to initialize decoder */
134 MP4_Box_t *p_sample;/* point on actual sdsd */
144 MP4_Box_t *p_root; /* container for the whole file */
148 uint64_t i_time; /* time position of the presentation
149 * in movie timescale */
150 uint64_t i_timescale; /* movie time scale */
151 uint64_t i_duration; /* movie duration */
152 unsigned int i_tracks; /* number of tracks */
153 mp4_track_t *track; /* array of track */
156 /*****************************************************************************
157 * Declaration of local function
158 *****************************************************************************/
159 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *);
160 static void MP4_TrackDestroy( demux_t *, mp4_track_t * );
162 static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
163 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
165 static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
167 static uint64_t MP4_TrackGetPos ( mp4_track_t * );
168 static int MP4_TrackSampleSize( mp4_track_t * );
169 static int MP4_TrackNextSample( demux_t *, mp4_track_t * );
170 static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
172 /* Return time in s of a track */
173 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
175 #define chunk p_track->chunk[p_track->i_chunk]
177 unsigned int i_index = 0;
178 unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
179 int64_t i_dts = chunk.i_first_dts;
181 while( i_sample > 0 )
183 if( i_sample > chunk.p_sample_count_dts[i_index] )
185 i_dts += chunk.p_sample_count_dts[i_index] *
186 chunk.p_sample_delta_dts[i_index];
187 i_sample -= chunk.p_sample_count_dts[i_index];
192 i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
200 /* now handle elst */
201 if( p_track->p_elst )
203 demux_sys_t *p_sys = p_demux->p_sys;
204 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
206 /* convert to offset */
207 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
208 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
209 elst->i_media_time[p_track->i_elst] > 0 )
211 i_dts -= elst->i_media_time[p_track->i_elst];
214 /* add i_elst_time */
215 i_dts += p_track->i_elst_time * p_track->i_timescale /
218 if( i_dts < 0 ) i_dts = 0;
221 return I64C(1000000) * i_dts / p_track->i_timescale;
224 static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
226 mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
227 unsigned int i_index = 0;
228 unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
230 if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
233 for( i_index = 0;; i_index++ )
235 if( i_sample < ck->p_sample_count_pts[i_index] )
236 return ck->p_sample_offset_pts[i_index] * I64C(1000000) /
237 (int64_t)p_track->i_timescale;
239 i_sample -= ck->p_sample_count_pts[i_index];
243 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
245 return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
248 /* Function to lookup the currently playing item */
249 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
250 playlist_item_t **pp_item );
252 /*****************************************************************************
253 * Open: check file and initializes MP4 structures
254 *****************************************************************************/
255 static int Open( vlc_object_t * p_this )
257 demux_t *p_demux = (demux_t *)p_this;
268 vlc_bool_t b_seekable;
270 /* A little test to see if it could be a mp4 */
271 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
273 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
284 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
291 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
294 msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
298 /*Set exported functions */
299 p_demux->pf_demux = Demux;
300 p_demux->pf_control = Control;
302 /* create our structure that will contains all data */
303 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
304 memset( p_sys, 0, sizeof( demux_sys_t ) );
306 /* Now load all boxes ( except raw data ) */
307 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
309 msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
313 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
315 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
317 switch( p_ftyp->data.p_ftyp->i_major_brand )
321 "ISO Media file (isom) version %d.",
322 p_ftyp->data.p_ftyp->i_minor_version );
326 "unrecognized major file specification (%4.4s).",
327 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
333 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
336 /* the file need to have one moov box */
337 if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
339 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
343 msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
346 /* we have a free box as a moov, rename it */
347 p_foov->i_type = FOURCC_moov;
350 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
352 playlist_t *p_playlist;
353 playlist_item_t *p_current, *p_item_in_category;
354 int i_count = MP4_BoxCount( p_rmra, "rmda" );
356 vlc_bool_t b_play = VLC_FALSE;
358 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
361 (playlist_t *)vlc_object_find( p_demux,
366 b_play = FindItem( p_demux, p_playlist, &p_current );
367 p_item_in_category = playlist_ItemToNode( p_playlist, p_current, VLC_TRUE );
368 p_current->p_input->i_type = ITEM_TYPE_PLAYLIST;
370 for( i = 0; i < i_count; i++ )
372 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
376 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
380 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
382 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
383 psz_ref, (char*)&i_ref_type );
385 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
387 if( strstr( psz_ref, "qt5gateQT" ) )
389 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
392 if( !strncmp( psz_ref, "http://", 7 ) ||
393 !strncmp( psz_ref, "rtsp://", 7 ) )
400 char *psz_path = strdup( p_demux->psz_path );
401 char *end = strrchr( psz_path, '/' );
402 if( end ) end[1] = '\0';
403 else *psz_path = '\0';
405 asprintf( &psz_absolute, "%s://%s%s",
406 p_demux->psz_access, psz_path, psz_ref );
408 if( psz_ref ) free( psz_ref );
409 psz_ref = psz_absolute;
414 input_item_t *p_input;
415 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
416 p_input = input_ItemNewExt( p_playlist, psz_ref, NULL,
418 input_ItemCopyOptions( p_current->p_input, p_input );
419 playlist_BothAddInput( p_playlist, p_input,
421 PLAYLIST_APPEND, PLAYLIST_END,
422 NULL, NULL, VLC_FALSE );
427 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
428 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
430 if( psz_ref ) free( psz_ref );
432 if( b_play && p_item_in_category &&
433 p_item_in_category->i_children > 0 )
435 playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, VLC_TRUE,
436 p_item_in_category, NULL );
438 vlc_object_release( p_playlist );
442 msg_Err( p_demux, "can't find playlist" );
446 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
450 msg_Err( p_demux, "cannot find /moov/mvhd" );
455 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
456 p_demux->pf_demux = DemuxRef;
462 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
463 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
466 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
468 msg_Err( p_demux, "cannot find any /moov/trak" );
471 msg_Dbg( p_demux, "find %d track%c",
473 p_sys->i_tracks ? 's':' ' );
475 /* allocate memory */
476 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
477 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
479 /* now process each track and extract all usefull information */
480 for( i = 0; i < p_sys->i_tracks; i++ )
482 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
483 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak );
485 if( p_sys->track[i].b_ok )
488 switch( p_sys->track[i].fmt.i_cat )
497 psz_cat = "subtitle";
505 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
506 p_sys->track[i].i_track_ID, psz_cat,
507 p_sys->track[i].b_enable ? "enable":"disable",
508 p_sys->track[i].fmt.psz_language ?
509 p_sys->track[i].fmt.psz_language : "undef" );
513 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
514 p_sys->track[i].i_track_ID );
523 MP4_BoxFree( p_demux->s, p_sys->p_root );
529 /*****************************************************************************
530 * Demux: read packet and send them to decoders
531 *****************************************************************************
532 * TODO check for newly selected track (ie audio upt to now )
533 *****************************************************************************/
534 static int Demux( demux_t *p_demux )
536 demux_sys_t *p_sys = p_demux->p_sys;
537 unsigned int i_track;
540 unsigned int i_track_selected;
542 /* check for newly selected/unselected track */
543 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
546 mp4_track_t *tk = &p_sys->track[i_track];
550 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
555 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
557 if( tk->b_selected && !b )
559 MP4_TrackUnselect( p_demux, tk );
561 else if( !tk->b_selected && b)
563 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
572 if( i_track_selected <= 0 )
574 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
575 if( p_sys->i_timescale > 0 )
577 int64_t i_length = (mtime_t)1000000 *
578 (mtime_t)p_sys->i_duration /
579 (mtime_t)p_sys->i_timescale;
580 if( MP4_GetMoviePTS( p_sys ) >= i_length )
585 msg_Warn( p_demux, "no track selected, exiting..." );
589 /* first wait for the good time to read a packet */
590 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr + 1 );
592 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
594 /* we will read 100ms for each stream so ...*/
595 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
597 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
599 mp4_track_t *tk = &p_sys->track[i_track];
601 if( !tk->b_ok || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
606 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
609 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
610 MP4_TrackGetDTS( p_demux, tk ),
611 MP4_GetMoviePTS( p_sys ) );
614 if( MP4_TrackSampleSize( tk ) > 0 )
620 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
622 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
624 MP4_TrackUnselect( p_demux, tk );
630 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
632 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
634 MP4_TrackUnselect( p_demux, tk );
638 if( tk->b_drms && tk->p_drms )
640 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
643 else if( tk->fmt.i_cat == SPU_ES )
645 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
646 p_block->i_buffer >= 2 )
648 uint16_t i_size = GetWBE( p_block->p_buffer );
650 if( i_size + 2 <= p_block->i_buffer )
653 /* remove the length field, and append a '\0' */
654 memmove( &p_block->p_buffer[0],
655 &p_block->p_buffer[2], i_size );
656 p_block->p_buffer[i_size] = '\0';
657 p_block->i_buffer = i_size + 1;
659 /* convert \r -> \n */
660 while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
668 p_block->i_buffer = 0;
673 p_block->i_dts = MP4_TrackGetDTS( p_demux, tk ) + 1;
675 i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
677 p_block->i_pts = p_block->i_dts + i_delta;
678 else if( tk->fmt.i_cat != VIDEO_ES )
679 p_block->i_pts = p_block->i_dts;
683 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
684 es_out_Send( p_demux->out, tk->p_es, p_block );
688 if( MP4_TrackNextSample( p_demux, tk ) )
697 /*****************************************************************************
698 * Seek: Got to i_date
699 ******************************************************************************/
700 static int Seek( demux_t *p_demux, mtime_t i_date )
702 demux_sys_t *p_sys = p_demux->p_sys;
703 unsigned int i_track;
705 /* First update update global time */
706 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
707 p_sys->i_pcr = i_date;
709 /* Now for each stream try to go to this time */
710 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
712 mp4_track_t *tk = &p_sys->track[i_track];
713 MP4_TrackSeek( p_demux, tk, i_date );
718 /*****************************************************************************
720 *****************************************************************************/
721 static int Control( demux_t *p_demux, int i_query, va_list args )
723 demux_sys_t *p_sys = p_demux->p_sys;
730 case DEMUX_GET_POSITION:
731 pf = (double*)va_arg( args, double * );
732 if( p_sys->i_duration > 0 )
734 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
742 case DEMUX_SET_POSITION:
743 f = (double)va_arg( args, double );
744 if( p_sys->i_timescale > 0 )
746 i64 = (int64_t)( f * (double)1000000 *
747 (double)p_sys->i_duration /
748 (double)p_sys->i_timescale );
749 return Seek( p_demux, i64 );
751 else return VLC_SUCCESS;
754 pi64 = (int64_t*)va_arg( args, int64_t * );
755 if( p_sys->i_timescale > 0 )
757 *pi64 = (mtime_t)1000000 *
758 (mtime_t)p_sys->i_time /
759 (mtime_t)p_sys->i_timescale;
765 i64 = (int64_t)va_arg( args, int64_t );
766 return Seek( p_demux, i64 );
768 case DEMUX_GET_LENGTH:
769 pi64 = (int64_t*)va_arg( args, int64_t * );
770 if( p_sys->i_timescale > 0 )
772 *pi64 = (mtime_t)1000000 *
773 (mtime_t)p_sys->i_duration /
774 (mtime_t)p_sys->i_timescale;
780 msg_Warn( p_demux, "DEMUX_GET_FPS unimplemented !!" );
785 vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
786 MP4_Box_t *p_0xa9xxx;
788 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
791 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
798 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
799 p_0xa9xxx = p_0xa9xxx->p_next )
803 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
805 psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
806 if( psz_utf == NULL )
808 /* FIXME FIXME: should convert from whatever the character
809 * encoding of MP4 meta data is to UTF-8. */
810 EnsureUTF8( psz_utf );
812 switch( p_0xa9xxx->i_type )
814 case FOURCC_0xa9nam: /* Full name */
815 vlc_meta_SetTitle( p_meta, psz_utf );
818 vlc_meta_SetArtist( p_meta, psz_utf );
821 vlc_meta_SetArtist( p_meta, psz_utf );
824 vlc_meta_SetCopyright( p_meta, psz_utf );
826 case FOURCC_0xa9day: /* Creation Date */
827 vlc_meta_SetDate( p_meta, psz_utf );
829 case FOURCC_0xa9des: /* Description */
830 vlc_meta_SetDescription( p_meta, psz_utf );
832 case FOURCC_0xa9gen: /* Genre */
833 vlc_meta_SetGenre( p_meta, psz_utf );
836 case FOURCC_0xa9alb: /* Album */
837 vlc_meta_SetAlbum( p_meta, psz_utf );
841 case FOURCC_0xa9inf: /* Information */
842 case FOURCC_0xa9dir: /* Director */
843 case FOURCC_0xa9dis: /* Disclaimer */
844 case FOURCC_0xa9enc: /* Encoded By */
845 case FOURCC_0xa9trk: /* Track */
846 case FOURCC_0xa9cmt: /* Commment */
847 case FOURCC_0xa9url: /* URL */
848 case FOURCC_0xa9req: /* Requirements */
849 case FOURCC_0xa9fmt: /* Original Format */
850 case FOURCC_0xa9dsa: /* Display Source As */
851 case FOURCC_0xa9hst: /* Host Computer */
852 case FOURCC_0xa9prd: /* Producer */
853 case FOURCC_0xa9prf: /* Performers */
854 case FOURCC_0xa9ope: /* Original Performer */
855 case FOURCC_0xa9src: /* Providers Source Content */
856 case FOURCC_0xa9wrt: /* Writer */
857 case FOURCC_0xa9com: /* Composer */
858 case FOURCC_WLOC: /* Window Location */
859 /* TODO one day, but they aren't really meaningfull */
870 case DEMUX_GET_TITLE_INFO:
871 case DEMUX_SET_NEXT_DEMUX_TIME:
872 case DEMUX_SET_GROUP:
876 msg_Warn( p_demux, "control query %u unimplemented", i_query );
881 /*****************************************************************************
882 * Close: frees unused data
883 *****************************************************************************/
884 static void Close ( vlc_object_t * p_this )
886 unsigned int i_track;
887 demux_t * p_demux = (demux_t *)p_this;
888 demux_sys_t *p_sys = p_demux->p_sys;
890 msg_Dbg( p_demux, "freeing all memory" );
892 MP4_BoxFree( p_demux->s, p_sys->p_root );
893 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
895 MP4_TrackDestroy( p_demux, &p_sys->track[i_track] );
897 FREENULL( p_sys->track );
904 /****************************************************************************
905 * Local functions, specific to vlc
906 ****************************************************************************/
908 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
909 static int TrackCreateChunksIndex( demux_t *p_demux,
910 mp4_track_t *p_demux_track )
912 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
915 unsigned int i_chunk;
916 unsigned int i_index, i_last;
918 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
919 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
920 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
922 return( VLC_EGENERIC );
925 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
926 if( !p_demux_track->i_chunk_count )
928 msg_Warn( p_demux, "no chunk defined" );
929 return( VLC_EGENERIC );
931 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
932 sizeof( mp4_chunk_t ) );
934 /* first we read chunk offset */
935 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
937 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
939 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
942 ck->p_sample_count_dts = NULL;
943 ck->p_sample_delta_dts = NULL;
944 ck->p_sample_count_pts = NULL;
945 ck->p_sample_offset_pts = NULL;
948 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
949 to be used for the sample XXX begin to 1
950 We construct it begining at the end */
951 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
952 i_index = p_stsc->data.p_stsc->i_entry_count;
955 msg_Warn( p_demux, "cannot read chunk table or table empty" );
956 return( VLC_EGENERIC );
961 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
962 i_chunk < i_last; i_chunk++ )
964 p_demux_track->chunk[i_chunk].i_sample_description_index =
965 p_stsc->data.p_stsc->i_sample_description_index[i_index];
966 p_demux_track->chunk[i_chunk].i_sample_count =
967 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
969 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
972 p_demux_track->chunk[0].i_sample_first = 0;
973 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
975 p_demux_track->chunk[i_chunk].i_sample_first =
976 p_demux_track->chunk[i_chunk-1].i_sample_first +
977 p_demux_track->chunk[i_chunk-1].i_sample_count;
980 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
981 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
986 static int TrackCreateSamplesIndex( demux_t *p_demux,
987 mp4_track_t *p_demux_track )
990 MP4_Box_data_stsz_t *stsz;
991 MP4_Box_data_stts_t *stts;
992 /* TODO use also stss and stsh table for seeking */
993 /* FIXME use edit table */
998 int64_t i_index_sample_used;
1003 * Gives the sample size for each samples. There is also a stz2 table
1004 * (compressed form) that we need to implement TODO */
1005 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1008 /* FIXME and stz2 */
1009 msg_Warn( p_demux, "cannot find STSZ box" );
1010 return VLC_EGENERIC;
1012 stsz = p_box->data.p_stsz;
1015 * Gives mapping between sample and decoding time
1017 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1020 msg_Warn( p_demux, "cannot find STTS box" );
1021 return VLC_EGENERIC;
1023 stts = p_box->data.p_stts;
1025 /* Use stsz table to create a sample number -> sample size table */
1026 p_demux_track->i_sample_count = stsz->i_sample_count;
1027 if( stsz->i_sample_size )
1029 /* 1: all sample have the same size, so no need to construct a table */
1030 p_demux_track->i_sample_size = stsz->i_sample_size;
1031 p_demux_track->p_sample_size = NULL;
1035 /* 2: each sample can have a different size */
1036 p_demux_track->i_sample_size = 0;
1037 p_demux_track->p_sample_size =
1038 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1040 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1042 p_demux_track->p_sample_size[i_sample] =
1043 stsz->i_entry_size[i_sample];
1047 /* Use stts table to create a sample number -> dts table.
1048 * XXX: if we don't want to waste too much memory, we can't expand
1049 * the box! so each chunk will contain an "extract" of this table
1050 * for fast research (problem with raw stream where a sample is sometime
1051 * just channels*bits_per_sample/8 */
1054 i_index = 0; i_index_sample_used = 0;
1055 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1057 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1058 int64_t i_entry, i_sample_count, i;
1061 ck->i_first_dts = i_last_dts;
1063 /* count how many entries are needed for this chunk
1064 * for p_sample_delta_dts and p_sample_count_dts */
1065 i_sample_count = ck->i_sample_count;
1068 while( i_sample_count > 0 )
1070 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1071 /* don't count already used sample in this entry */
1073 i_sample_count += i_index_sample_used;
1079 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1080 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1083 i_sample_count = ck->i_sample_count;
1084 for( i = 0; i < i_entry; i++ )
1089 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1091 i_used = __MIN( i_rest, i_sample_count );
1093 i_index_sample_used += i_used;
1094 i_sample_count -= i_used;
1096 ck->p_sample_count_dts[i] = i_used;
1097 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1099 i_last_dts += i_used * ck->p_sample_delta_dts[i];
1101 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1104 i_index_sample_used = 0;
1110 * Gives the delta between decoding time (dts) and composition table (pts)
1112 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1115 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1117 msg_Warn( p_demux, "CTTS table" );
1119 /* Create pts-dts table per chunk */
1120 i_index = 0; i_index_sample_used = 0;
1121 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1123 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1124 int64_t i_entry, i_sample_count, i;
1126 /* count how many entries are needed for this chunk
1127 * for p_sample_delta_dts and p_sample_count_dts */
1128 i_sample_count = ck->i_sample_count;
1131 while( i_sample_count > 0 )
1133 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1135 /* don't count already used sample in this entry */
1137 i_sample_count += i_index_sample_used;
1143 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1144 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1147 i_sample_count = ck->i_sample_count;
1148 for( i = 0; i < i_entry; i++ )
1153 i_rest = ctts->i_sample_count[i_index] -
1154 i_index_sample_used;
1156 i_used = __MIN( i_rest, i_sample_count );
1158 i_index_sample_used += i_used;
1159 i_sample_count -= i_used;
1161 ck->p_sample_count_pts[i] = i_used;
1162 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1164 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1167 i_index_sample_used = 0;
1173 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
1174 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1175 i_last_dts / p_demux_track->i_timescale );
1182 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1184 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1185 unsigned int i_chunk, es_out_id_t **pp_es )
1187 MP4_Box_t *p_sample;
1193 if( !p_track->chunk[i_chunk].i_sample_description_index )
1195 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1196 p_track->i_track_ID );
1197 return VLC_EGENERIC;
1200 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1201 p_track->chunk[i_chunk].i_sample_description_index - 1 );
1204 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1206 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1207 p_track->i_track_ID );
1208 return VLC_EGENERIC;
1211 p_track->p_sample = p_sample;
1213 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size == 1 )
1215 MP4_Box_data_sample_soun_t *p_soun;
1217 p_soun = p_sample->data.p_sample_soun;
1219 if( p_soun->i_qt_version == 0 )
1221 switch( p_sample->i_type )
1223 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1224 p_soun->i_qt_version = 1;
1225 p_soun->i_sample_per_packet = 64;
1226 p_soun->i_bytes_per_packet = 34;
1227 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1228 p_soun->i_bytes_per_sample = 2;
1230 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1231 p_soun->i_qt_version = 1;
1232 p_soun->i_sample_per_packet = 6;
1233 p_soun->i_bytes_per_packet = 2;
1234 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1235 p_soun->i_bytes_per_sample = 2;
1237 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1238 p_soun->i_qt_version = 1;
1239 p_soun->i_sample_per_packet = 12;
1240 p_soun->i_bytes_per_packet = 2;
1241 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1242 p_soun->i_bytes_per_sample = 2;
1244 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1245 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1246 p_soun->i_samplesize = 8;
1253 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1255 p_soun->i_qt_version = 0;
1260 /* It's a little ugly but .. there are special cases */
1261 switch( p_sample->i_type )
1263 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1264 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1265 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1268 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1269 p_track->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
1271 /* Buggy files workaround */
1272 if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1273 p_sample->data.p_sample_soun->i_sampleratehi) )
1275 MP4_Box_data_sample_soun_t *p_soun =
1276 p_sample->data.p_sample_soun;
1278 msg_Warn( p_demux, "i_timescale ("I64Fu") != i_sampleratehi "
1279 "(%u), making both equal (report any problem).",
1280 p_track->i_timescale, p_soun->i_sampleratehi );
1282 if( p_soun->i_sampleratehi )
1283 p_track->i_timescale = p_soun->i_sampleratehi;
1285 p_soun->i_sampleratehi = p_track->i_timescale;
1289 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1290 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1293 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1294 case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1295 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1296 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1297 /* FIXME UTF-8 doesn't work here ? */
1298 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1302 p_track->fmt.i_codec = p_sample->i_type;
1306 /* now see if esds is present and if so create a data packet
1307 with decoder_specific_info */
1308 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1309 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1310 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1311 ( p_esds->data.p_esds )&&
1314 /* First update information based on i_objectTypeIndication */
1315 switch( p_decconfig->i_objectTypeIndication )
1317 case( 0x20 ): /* MPEG4 VIDEO */
1318 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1321 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1328 case( 0x65): /* MPEG2 video */
1329 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1331 /* Theses are MPEG2-AAC */
1332 case( 0x66): /* main profile */
1333 case( 0x67): /* Low complexity profile */
1334 case( 0x68): /* Scaleable Sampling rate profile */
1335 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1337 /* true MPEG 2 audio */
1339 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1341 case( 0x6a): /* MPEG1 video */
1342 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1344 case( 0x6b): /* MPEG1 audio */
1345 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1347 case( 0x6c ): /* jpeg */
1348 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1352 case( 0xe0 ): /* NeroDigital: dvd subs */
1353 if( p_track->fmt.i_cat == SPU_ES )
1355 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1356 if( p_track->i_width > 0 )
1357 p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1358 if( p_track->i_height > 0 )
1359 p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1364 /* Unknown entry, but don't touch i_fourcc */
1366 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1367 p_decconfig->i_objectTypeIndication,
1368 p_track->i_track_ID );
1371 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1372 if( p_track->fmt.i_extra > 0 )
1374 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1375 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1376 p_track->fmt.i_extra );
1381 switch( p_sample->i_type )
1383 /* qt decoder, send the complete chunk */
1384 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1385 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1386 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1387 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1388 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1389 p_track->fmt.i_extra =
1390 p_sample->data.p_sample_vide->i_qt_image_description;
1391 if( p_track->fmt.i_extra > 0 )
1393 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1394 memcpy( p_track->fmt.p_extra,
1395 p_sample->data.p_sample_vide->p_qt_image_description,
1396 p_track->fmt.i_extra);
1399 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1400 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1401 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1402 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1403 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1404 p_track->fmt.i_extra =
1405 p_sample->data.p_sample_soun->i_qt_description;
1406 if( p_track->fmt.i_extra > 0 )
1408 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1409 memcpy( p_track->fmt.p_extra,
1410 p_sample->data.p_sample_soun->p_qt_description,
1411 p_track->fmt.i_extra);
1415 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1416 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1418 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1422 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1423 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1424 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1425 p_track->fmt.i_extra );
1429 msg_Err( p_demux, "missing avcC" );
1441 /* some last initialisation */
1442 switch( p_track->fmt.i_cat )
1445 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1446 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1447 p_track->fmt.video.i_bits_per_pixel =
1448 p_sample->data.p_sample_vide->i_depth;
1450 /* fall on display size */
1451 if( p_track->fmt.video.i_width <= 0 )
1452 p_track->fmt.video.i_width = p_track->i_width;
1453 if( p_track->fmt.video.i_height <= 0 )
1454 p_track->fmt.video.i_height = p_track->i_height;
1456 /* Find out apect ratio from display size */
1457 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1458 /* Work-around buggy muxed files */
1459 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1460 p_track->fmt.video.i_aspect =
1461 VOUT_ASPECT_FACTOR * p_track->i_width / p_track->i_height;
1463 /* Support for cropping (eg. in H263 files) */
1464 p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1465 p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1468 p_track->fmt.video.i_frame_rate = p_track->i_timescale;
1469 p_track->fmt.video.i_frame_rate_base = 1;
1471 if( p_track->fmt.video.i_frame_rate &&
1472 (p_box = MP4_BoxGet( p_track->p_stbl, "stts" )) &&
1473 p_box->data.p_stts->i_entry_count >= 1 )
1475 p_track->fmt.video.i_frame_rate_base =
1476 p_box->data.p_stts->i_sample_delta[0];
1482 p_track->fmt.audio.i_channels =
1483 p_sample->data.p_sample_soun->i_channelcount;
1484 p_track->fmt.audio.i_rate =
1485 p_sample->data.p_sample_soun->i_sampleratehi;
1486 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1487 p_sample->data.p_sample_soun->i_sampleratehi *
1488 p_sample->data.p_sample_soun->i_samplesize;
1489 p_track->fmt.audio.i_bitspersample =
1490 p_sample->data.p_sample_soun->i_samplesize;
1497 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1502 /* given a time it return sample/chunk
1503 * it also update elst field of the track
1505 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1506 int64_t i_start, uint32_t *pi_chunk,
1507 uint32_t *pi_sample )
1509 demux_sys_t *p_sys = p_demux->p_sys;
1512 unsigned int i_sample;
1513 unsigned int i_chunk;
1516 /* FIXME see if it's needed to check p_track->i_chunk_count */
1517 if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1519 return( VLC_EGENERIC );
1522 /* handle elst (find the correct one) */
1523 MP4_TrackSetELST( p_demux, p_track, i_start );
1524 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1526 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1527 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1529 /* now calculate i_start for this elst */
1531 i_start -= p_track->i_elst_time * I64C(1000000) / p_sys->i_timescale;
1539 /* to track time scale */
1540 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1541 /* add elst offset */
1542 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1543 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1544 elst->i_media_time[p_track->i_elst] > 0 )
1546 i_start += elst->i_media_time[p_track->i_elst];
1549 msg_Dbg( p_demux, "elst (%d) gives "I64Fd"ms (movie)-> "I64Fd
1550 "ms (track)", p_track->i_elst,
1551 i_mvt * 1000 / p_sys->i_timescale,
1552 i_start * 1000 / p_track->i_timescale );
1556 /* convert absolute time to in timescale unit */
1557 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1560 /* we start from sample 0/chunk 0, hope it won't take too much time */
1561 /* *** find good chunk *** */
1562 for( i_chunk = 0; ; i_chunk++ )
1564 if( i_chunk + 1 >= p_track->i_chunk_count )
1566 /* at the end and can't check if i_start in this chunk,
1567 it will be check while searching i_sample */
1568 i_chunk = p_track->i_chunk_count - 1;
1572 if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1573 (uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1579 /* *** find sample in the chunk *** */
1580 i_sample = p_track->chunk[i_chunk].i_sample_first;
1581 i_dts = p_track->chunk[i_chunk].i_first_dts;
1582 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1585 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1586 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1589 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1590 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1592 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1597 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1601 i_sample += ( i_start - i_dts ) /
1602 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1607 if( i_sample >= p_track->i_sample_count )
1609 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1610 "(seeking too far) chunk=%d sample=%d",
1611 p_track->i_track_ID, i_chunk, i_sample );
1612 return( VLC_EGENERIC );
1616 /* *** Try to find nearest sync points *** */
1617 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1619 unsigned int i_index;
1621 "track[Id 0x%x] using Sync Sample Box (stss)",
1622 p_track->i_track_ID );
1623 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1625 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1629 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1631 p_stss->data.p_stss->i_sample_number[i_index-1] );
1632 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1633 /* new i_sample is less than old so i_chunk can only decreased */
1634 while( i_chunk > 0 &&
1635 i_sample < p_track->chunk[i_chunk].i_sample_first )
1642 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
1644 p_stss->data.p_stss->i_sample_number[i_index] );
1645 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1646 /* new i_sample is more than old so i_chunk can only increased */
1647 while( i_chunk < p_track->i_chunk_count - 1 &&
1648 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1649 p_track->chunk[i_chunk].i_sample_count )
1660 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
1661 "Sample Box (stss)", p_track->i_track_ID );
1664 *pi_chunk = i_chunk;
1665 *pi_sample = i_sample;
1670 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
1671 unsigned int i_chunk, unsigned int i_sample )
1673 vlc_bool_t b_reselect = VLC_FALSE;
1675 /* now see if actual es is ok */
1676 if( (p_track->i_chunk >= p_track->i_chunk_count - 1) ||
1677 (p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1678 p_track->chunk[i_chunk].i_sample_description_index) )
1680 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
1681 p_track->i_track_ID );
1683 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
1684 p_track->p_es, &b_reselect );
1686 es_out_Del( p_demux->out, p_track->p_es );
1688 p_track->p_es = NULL;
1690 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
1692 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1693 p_track->i_track_ID );
1695 p_track->b_ok = VLC_FALSE;
1696 p_track->b_selected = VLC_FALSE;
1697 return VLC_EGENERIC;
1701 /* select again the new decoder */
1704 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
1707 p_track->i_chunk = i_chunk;
1708 p_track->i_sample = i_sample;
1710 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
1713 /****************************************************************************
1715 ****************************************************************************
1716 * Parse track information and create all needed data to run a track
1717 * If it succeed b_ok is set to 1 else to 0
1718 ****************************************************************************/
1719 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
1720 MP4_Box_t *p_box_trak )
1722 demux_sys_t *p_sys = p_demux->p_sys;
1724 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1725 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1740 /* hint track unsupported */
1742 /* set default value (-> track unusable) */
1743 p_track->b_ok = VLC_FALSE;
1744 p_track->b_enable = VLC_FALSE;
1745 p_track->b_selected = VLC_FALSE;
1747 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
1754 /* do we launch this track by default ? */
1756 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1758 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1759 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1760 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1764 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
1767 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1768 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1770 if( ( !p_mdhd )||( !p_hdlr ) )
1775 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1777 for( i = 0; i < 3; i++ )
1779 language[i] = p_mdhd->data.p_mdhd->i_language[i];
1783 switch( p_hdlr->data.p_hdlr->i_handler_type )
1785 case( FOURCC_soun ):
1786 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1790 p_track->fmt.i_cat = AUDIO_ES;
1793 case( FOURCC_vide ):
1794 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1798 p_track->fmt.i_cat = VIDEO_ES;
1801 case( FOURCC_text ):
1802 case( FOURCC_subp ):
1803 case( FOURCC_tx3g ):
1804 p_track->fmt.i_cat = SPU_ES;
1811 p_track->i_elst = 0;
1812 p_track->i_elst_time = 0;
1813 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1815 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
1818 msg_Warn( p_demux, "elst box found" );
1819 for( i = 0; i < elst->i_entry_count; i++ )
1821 msg_Dbg( p_demux, " - [%d] duration="I64Fd"ms media time="I64Fd
1822 "ms) rate=%d.%d", i,
1823 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
1824 elst->i_media_time[i] >= 0 ?
1825 (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
1827 elst->i_media_rate_integer[i],
1828 elst->i_media_rate_fraction[i] );
1835 p_dinf = MP4_BoxGet( p_minf, "dinf" );
1837 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
1838 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1843 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
1844 p_track->b_drms = p_drms != NULL;
1845 p_track->p_drms = p_track->b_drms ?
1846 p_drms->data.p_sample_soun->p_drms : NULL;
1849 if( strcmp( language, "```" ) && strcmp( language, "und" ) )
1851 p_track->fmt.psz_language = strdup( language );
1854 p_udta = MP4_BoxGet( p_box_trak, "udta" );
1857 MP4_Box_t *p_0xa9xxx;
1858 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
1859 p_0xa9xxx = p_0xa9xxx->p_next )
1861 switch( p_0xa9xxx->i_type )
1863 case FOURCC_0xa9nam:
1864 p_track->fmt.psz_description =
1865 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
1871 /* Create chunk index table and sample index table */
1872 if( TrackCreateChunksIndex( p_demux,p_track ) ||
1873 TrackCreateSamplesIndex( p_demux, p_track ) )
1875 return; /* cannot create chunks index */
1878 p_track->i_chunk = 0;
1879 p_track->i_sample = 0;
1882 if( TrackCreateES( p_demux,
1883 p_track, p_track->i_chunk,
1886 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
1887 p_track->i_track_ID );
1894 for( i = 0; i < p_track->i_chunk_count; i++ )
1896 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
1897 i, p_track->chunk[i].i_sample_count,
1898 p_track->chunk[i].i_first_dts );
1903 p_track->b_ok = VLC_TRUE;
1906 /****************************************************************************
1908 ****************************************************************************
1909 * Destroy a track created by MP4_TrackCreate.
1910 ****************************************************************************/
1911 static void MP4_TrackDestroy( demux_t *p_demux, mp4_track_t *p_track )
1913 unsigned int i_chunk;
1915 p_track->b_ok = VLC_FALSE;
1916 p_track->b_enable = VLC_FALSE;
1917 p_track->b_selected = VLC_FALSE;
1919 es_format_Clean( &p_track->fmt );
1921 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1923 if( p_track->chunk )
1925 FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
1926 FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
1928 FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
1929 FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
1932 FREENULL( p_track->chunk );
1934 if( !p_track->i_sample_size )
1936 FREENULL( p_track->p_sample_size );
1940 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
1943 if( !p_track->b_ok )
1945 return VLC_EGENERIC;
1948 if( p_track->b_selected )
1950 msg_Warn( p_demux, "track[Id 0x%x] already selected",
1951 p_track->i_track_ID );
1955 return MP4_TrackSeek( p_demux, p_track, i_start );
1958 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
1960 if( !p_track->b_ok )
1965 if( !p_track->b_selected )
1967 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
1968 p_track->i_track_ID );
1973 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
1974 p_track->p_es, VLC_FALSE );
1977 p_track->b_selected = VLC_FALSE;
1980 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
1986 if( !p_track->b_ok )
1988 return( VLC_EGENERIC );
1991 p_track->b_selected = VLC_FALSE;
1993 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
1994 &i_chunk, &i_sample ) )
1996 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
1997 p_track->i_track_ID );
1998 return( VLC_EGENERIC );
2001 p_track->b_selected = VLC_TRUE;
2003 if( TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) ==
2006 p_track->b_selected = VLC_TRUE;
2008 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME,
2009 p_track->p_es, i_start );
2012 return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
2017 * 3 types: for audio
2020 #define QT_V0_MAX_SAMPLES 1024
2021 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2024 MP4_Box_data_sample_soun_t *p_soun;
2026 if( p_track->i_sample_size == 0 )
2028 /* most simple case */
2029 return p_track->p_sample_size[p_track->i_sample];
2031 if( p_track->fmt.i_cat != AUDIO_ES )
2033 return p_track->i_sample_size;
2036 p_soun = p_track->p_sample->data.p_sample_soun;
2038 if( p_soun->i_qt_version == 1 )
2040 i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
2041 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2043 else if( p_track->i_sample_size > 256 )
2045 /* We do that so we don't read too much data
2046 * (in this case we are likely dealing with compressed data) */
2047 i_size = p_track->i_sample_size;
2051 /* Read a bunch of samples at once */
2052 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2053 ( p_track->i_sample -
2054 p_track->chunk[p_track->i_chunk].i_sample_first );
2056 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2057 i_size = i_samples * p_track->i_sample_size;
2060 //fprintf( stderr, "size=%d\n", i_size );
2064 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2066 unsigned int i_sample;
2069 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2071 if( p_track->i_sample_size )
2073 MP4_Box_data_sample_soun_t *p_soun =
2074 p_track->p_sample->data.p_sample_soun;
2076 if( p_soun->i_qt_version == 0 )
2078 i_pos += ( p_track->i_sample -
2079 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2080 p_track->i_sample_size;
2084 /* we read chunk by chunk */
2090 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2091 i_sample < p_track->i_sample; i_sample++ )
2093 i_pos += p_track->p_sample_size[i_sample];
2100 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2102 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2104 MP4_Box_data_sample_soun_t *p_soun;
2106 p_soun = p_track->p_sample->data.p_sample_soun;
2108 if( p_soun->i_qt_version == 1 )
2110 /* chunk by chunk */
2112 p_track->chunk[p_track->i_chunk].i_sample_first +
2113 p_track->chunk[p_track->i_chunk].i_sample_count;
2115 else if( p_track->i_sample_size > 256 )
2117 /* We do that so we don't read too much data
2118 * (in this case we are likely dealing with compressed data) */
2119 p_track->i_sample += 1;
2124 p_track->i_sample += QT_V0_MAX_SAMPLES;
2125 if( p_track->i_sample >
2126 p_track->chunk[p_track->i_chunk].i_sample_first +
2127 p_track->chunk[p_track->i_chunk].i_sample_count )
2130 p_track->chunk[p_track->i_chunk].i_sample_first +
2131 p_track->chunk[p_track->i_chunk].i_sample_count;
2137 p_track->i_sample++;
2140 if( p_track->i_sample >= p_track->i_sample_count )
2141 return VLC_EGENERIC;
2143 /* Have we changed chunk ? */
2144 if( p_track->i_sample >=
2145 p_track->chunk[p_track->i_chunk].i_sample_first +
2146 p_track->chunk[p_track->i_chunk].i_sample_count )
2148 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2149 p_track->i_sample ) )
2151 msg_Warn( p_demux, "track[0x%x] will be disabled "
2152 "(cannot restart decoder)", p_track->i_track_ID );
2153 MP4_TrackUnselect( p_demux, p_track );
2154 return VLC_EGENERIC;
2158 /* Have we changed elst */
2159 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2161 demux_sys_t *p_sys = p_demux->p_sys;
2162 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2163 uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2164 p_sys->i_timescale / (int64_t)1000000;
2166 if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2167 i_mvt >= p_track->i_elst_time +
2168 elst->i_segment_duration[p_track->i_elst] )
2170 MP4_TrackSetELST( p_demux, p_track,
2171 MP4_TrackGetDTS( p_demux, p_track ) );
2178 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2181 demux_sys_t *p_sys = p_demux->p_sys;
2182 int i_elst_last = tk->i_elst;
2184 /* handle elst (find the correct one) */
2186 tk->i_elst_time = 0;
2187 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2189 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2190 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2192 for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2194 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2196 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2200 tk->i_elst_time += i_dur;
2203 if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2205 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2206 tk->i_elst = elst->i_entry_count - 1;
2207 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2210 if( elst->i_media_time[tk->i_elst] < 0 )
2213 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2216 if( i_elst_last != tk->i_elst )
2218 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2222 static vlc_bool_t FindItem( demux_t *p_demux, playlist_t *p_playlist,
2223 playlist_item_t **pp_item )
2225 input_thread_t *p_input = (input_thread_t *)vlc_object_find( p_demux, VLC_OBJECT_INPUT, FIND_PARENT );
2226 vlc_bool_t b_play = var_CreateGetBool( p_demux, "playlist-autostart" );
2231 if( b_play && p_playlist->status.p_item &&
2232 p_playlist->status.p_item->p_input == input_GetItem(p_input) )
2234 msg_Dbg( p_playlist, "starting playlist playback" );
2235 *pp_item = p_playlist->status.p_item;
2240 input_item_t *p_current = input_GetItem( p_input );
2242 *pp_item = playlist_ItemGetByInput( p_playlist, p_current, VLC_FALSE );
2244 msg_Dbg( p_playlist, "unable to find item in playlist");
2246 msg_Dbg( p_playlist, "not starting playlist playback");
2249 vlc_object_release( p_input );