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 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
35 #include <vlc_demux.h>
37 #include <vlc_charset.h>
38 #include <vlc_iso_lang.h>
40 #include <vlc_input.h>
45 /*****************************************************************************
47 *****************************************************************************/
48 static int Open ( vlc_object_t * );
49 static void Close( vlc_object_t * );
52 set_category( CAT_INPUT )
53 set_subcategory( SUBCAT_INPUT_DEMUX )
54 set_description( N_("MP4 stream demuxer") )
55 set_shortname( N_("MP4") )
56 set_capability( "demux", 242 )
57 set_callbacks( Open, Close )
60 /*****************************************************************************
62 *****************************************************************************/
63 static int Demux ( demux_t * );
64 static int DemuxRef( demux_t *p_demux ){ (void)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 too
77 much memory and with fast access */
79 /* with this we can calculate dts/pts without waste memory */
80 uint64_t i_first_dts; /* DTS of the first sample */
81 uint64_t i_last_dts; /* DTS of the last sample */
82 uint32_t *p_sample_count_dts;
83 uint32_t *p_sample_delta_dts; /* dts delta */
85 uint32_t *p_sample_count_pts;
86 int32_t *p_sample_offset_pts; /* pts-dts */
88 /* TODO if needed add pts
89 but quickly *add* support for edts and seeking */
93 /* Contain all needed information for read all track with vlc */
96 unsigned int i_track_ID;/* this should be unique */
98 int b_ok; /* The track is usable */
99 int b_enable; /* is the trak enable by default */
100 bool b_selected; /* is the trak being played */
101 bool b_chapter; /* True when used for chapter only */
108 /* display size only ! */
112 /* more internal data */
113 uint64_t i_timescale; /* time scale for this track only */
116 int i_elst; /* current elst */
117 int64_t i_elst_time; /* current elst start time (in movie time scale)*/
118 MP4_Box_t *p_elst; /* elst (could be NULL) */
120 /* give the next sample to read, i_chunk is to find quickly where
121 the sample is located */
122 uint32_t i_sample; /* next sample to read */
123 uint32_t i_chunk; /* chunk where next sample is stored */
124 /* total count of chunk and sample */
125 uint32_t i_chunk_count;
126 uint32_t i_sample_count;
128 mp4_chunk_t *chunk; /* always defined for each chunk */
130 /* sample size, p_sample_size defined only if i_sample_size == 0
131 else i_sample_size is size for all sample */
132 uint32_t i_sample_size;
133 uint32_t *p_sample_size; /* XXX perhaps add file offset if take
134 too much time to do sumations each time*/
136 MP4_Box_t *p_stbl; /* will contain all timing information */
137 MP4_Box_t *p_stsd; /* will contain all data to initialize decoder */
138 MP4_Box_t *p_sample;/* point on actual sdsd */
149 MP4_Box_t *p_root; /* container for the whole file */
153 uint64_t i_time; /* time position of the presentation
154 * in movie timescale */
155 uint64_t i_timescale; /* movie time scale */
156 uint64_t i_duration; /* movie duration */
157 unsigned int i_tracks; /* number of tracks */
158 mp4_track_t *track; /* array of track */
159 float f_fps; /* number of frame per seconds */
162 MP4_Box_t *p_tref_chap;
165 input_title_t *p_title;
168 /*****************************************************************************
169 * Declaration of local function
170 *****************************************************************************/
171 static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t *, bool b_force_enable );
172 static void MP4_TrackDestroy( mp4_track_t * );
174 static int MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
175 static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
177 static int MP4_TrackSeek ( demux_t *, mp4_track_t *, mtime_t );
179 static uint64_t MP4_TrackGetPos ( mp4_track_t * );
180 static int MP4_TrackSampleSize( mp4_track_t * );
181 static int MP4_TrackNextSample( demux_t *, mp4_track_t * );
182 static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
184 static void MP4_UpdateSeekpoint( demux_t * );
185 static const char *MP4_ConvertMacCode( uint16_t );
187 /* Return time in s of a track */
188 static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
190 #define chunk p_track->chunk[p_track->i_chunk]
192 unsigned int i_index = 0;
193 unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
194 int64_t i_dts = chunk.i_first_dts;
196 while( i_sample > 0 )
198 if( i_sample > chunk.p_sample_count_dts[i_index] )
200 i_dts += chunk.p_sample_count_dts[i_index] *
201 chunk.p_sample_delta_dts[i_index];
202 i_sample -= chunk.p_sample_count_dts[i_index];
207 i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
214 /* now handle elst */
215 if( p_track->p_elst )
217 demux_sys_t *p_sys = p_demux->p_sys;
218 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
220 /* convert to offset */
221 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
222 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
223 elst->i_media_time[p_track->i_elst] > 0 )
225 i_dts -= elst->i_media_time[p_track->i_elst];
228 /* add i_elst_time */
229 i_dts += p_track->i_elst_time * p_track->i_timescale /
232 if( i_dts < 0 ) i_dts = 0;
235 return INT64_C(1000000) * i_dts / p_track->i_timescale;
238 static inline int64_t MP4_TrackGetPTSDelta( mp4_track_t *p_track )
240 mp4_chunk_t *ck = &p_track->chunk[p_track->i_chunk];
241 unsigned int i_index = 0;
242 unsigned int i_sample = p_track->i_sample - ck->i_sample_first;
244 if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
247 for( i_index = 0;; i_index++ )
249 if( i_sample < ck->p_sample_count_pts[i_index] )
250 return ck->p_sample_offset_pts[i_index] * INT64_C(1000000) /
251 (int64_t)p_track->i_timescale;
253 i_sample -= ck->p_sample_count_pts[i_index];
257 static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
259 return INT64_C(1000000) * p_sys->i_time / p_sys->i_timescale;
262 static void LoadChapter( demux_t *p_demux );
264 /*****************************************************************************
265 * Open: check file and initializes MP4 structures
266 *****************************************************************************/
267 static int Open( vlc_object_t * p_this )
269 demux_t *p_demux = (demux_t *)p_this;
272 const uint8_t *p_peek;
283 /* A little test to see if it could be a mp4 */
284 if( stream_Peek( p_demux->s, &p_peek, 8 ) < 8 ) return VLC_EGENERIC;
286 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
297 case VLC_FOURCC( 'p', 'n', 'o', 't' ):
304 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
307 msg_Warn( p_demux, "MP4 plugin discarded (unseekable)" );
311 /*Set exported functions */
312 p_demux->pf_demux = Demux;
313 p_demux->pf_control = Control;
315 /* create our structure that will contains all data */
316 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
317 memset( p_sys, 0, sizeof( demux_sys_t ) );
319 /* Now load all boxes ( except raw data ) */
320 if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
322 msg_Warn( p_demux, "MP4 plugin discarded (not a valid file)" );
326 MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
328 if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
330 switch( p_ftyp->data.p_ftyp->i_major_brand )
334 "ISO Media file (isom) version %d.",
335 p_ftyp->data.p_ftyp->i_minor_version );
339 "unrecognized major file specification (%4.4s).",
340 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
346 msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
349 /* the file need to have one moov box */
350 if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
352 MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
356 msg_Err( p_demux, "MP4 plugin discarded (no moov box)" );
359 /* we have a free box as a moov, rename it */
360 p_foov->i_type = FOURCC_moov;
363 if( ( p_rmra = MP4_BoxGet( p_sys->p_root, "/moov/rmra" ) ) )
365 int i_count = MP4_BoxCount( p_rmra, "rmda" );
368 msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
370 input_thread_t *p_input = demux_GetParentInput( p_demux );
371 input_item_t *p_current = input_GetItem( p_input );
373 for( i = 0; i < i_count; i++ )
375 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
379 if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
383 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
385 msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
386 psz_ref, (char*)&i_ref_type );
388 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
390 if( strstr( psz_ref, "qt5gateQT" ) )
392 msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
395 if( !strncmp( psz_ref, "http://", 7 ) ||
396 !strncmp( psz_ref, "rtsp://", 7 ) )
403 char *psz_path = strdup( p_demux->psz_path );
404 char *end = strrchr( psz_path, '/' );
405 if( end ) end[1] = '\0';
406 else *psz_path = '\0';
408 if( asprintf( &psz_absolute, "%s://%s%s",
409 p_demux->psz_access, psz_path, psz_ref ) < 0 )
413 vlc_object_release( p_input) ;
418 psz_ref = psz_absolute;
421 msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
422 input_item_t *p_input = input_item_New( p_demux, psz_ref, NULL );
423 input_item_CopyOptions( p_current, p_input );
424 input_item_AddSubItem( p_current, p_input );
425 vlc_gc_decref( p_input );
429 msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
430 (char*)&p_rdrf->data.p_rdrf->i_ref_type );
434 vlc_object_release( p_input );
437 if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
441 msg_Err( p_demux, "cannot find /moov/mvhd" );
446 msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
447 p_demux->pf_demux = DemuxRef;
453 p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
454 if( p_sys->i_timescale == 0 )
456 msg_Err( p_this, "bad timescale" );
459 p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
462 if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
464 msg_Err( p_demux, "cannot find any /moov/trak" );
467 msg_Dbg( p_demux, "found %d track%c",
469 p_sys->i_tracks ? 's':' ' );
471 /* allocate memory */
472 p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
473 if( p_sys->track == NULL )
475 memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
477 /* Search the first chap reference (like quicktime) and
478 * check that at least 1 stream is enabled */
479 p_sys->p_tref_chap = NULL;
480 b_enabled_es = false;
481 for( i = 0; i < p_sys->i_tracks; i++ )
483 MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
486 MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
487 if( p_tkhd && (p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED) )
490 MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
491 if( p_chap && p_chap->data.p_tref_generic->i_entry_count > 0 && !p_sys->p_tref_chap )
492 p_sys->p_tref_chap = p_chap;
495 /* now process each track and extract all usefull information */
496 for( i = 0; i < p_sys->i_tracks; i++ )
498 p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
499 MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
501 if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
504 switch( p_sys->track[i].fmt.i_cat )
513 psz_cat = "subtitle";
521 msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
522 p_sys->track[i].i_track_ID, psz_cat,
523 p_sys->track[i].b_enable ? "enable":"disable",
524 p_sys->track[i].fmt.psz_language ?
525 p_sys->track[i].fmt.psz_language : "undef" );
527 else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
529 msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
530 p_sys->track[i].i_track_ID,
531 p_sys->track[i].fmt.psz_language ?
532 p_sys->track[i].fmt.psz_language : "undef" );
536 msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
537 p_sys->track[i].i_track_ID );
542 LoadChapter( p_demux );
549 MP4_BoxFree( p_demux->s, p_sys->p_root );
555 /*****************************************************************************
556 * Demux: read packet and send them to decoders
557 *****************************************************************************
558 * TODO check for newly selected track (ie audio upt to now )
559 *****************************************************************************/
560 static int Demux( demux_t *p_demux )
562 demux_sys_t *p_sys = p_demux->p_sys;
563 unsigned int i_track;
566 unsigned int i_track_selected;
568 /* check for newly selected/unselected track */
569 for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
572 mp4_track_t *tk = &p_sys->track[i_track];
575 if( !tk->b_ok || tk->b_chapter ||
576 ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
581 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
583 if( tk->b_selected && !b )
585 MP4_TrackUnselect( p_demux, tk );
587 else if( !tk->b_selected && b)
589 MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
598 if( i_track_selected <= 0 )
600 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
601 if( p_sys->i_timescale > 0 )
603 int64_t i_length = (mtime_t)1000000 *
604 (mtime_t)p_sys->i_duration /
605 (mtime_t)p_sys->i_timescale;
606 if( MP4_GetMoviePTS( p_sys ) >= i_length )
611 msg_Warn( p_demux, "no track selected, exiting..." );
616 MP4_UpdateSeekpoint( p_demux );
618 /* first wait for the good time to read a packet */
619 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
621 p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
623 /* we will read 100ms for each stream so ...*/
624 p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
626 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
628 mp4_track_t *tk = &p_sys->track[i_track];
630 if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
633 while( MP4_TrackGetDTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
636 msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
637 MP4_TrackGetDTS( p_demux, tk ),
638 MP4_GetMoviePTS( p_sys ) );
641 if( MP4_TrackSampleSize( tk ) > 0 )
647 if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
649 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
651 MP4_TrackUnselect( p_demux, tk );
657 stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
659 msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
661 MP4_TrackUnselect( p_demux, tk );
665 if( tk->b_drms && tk->p_drms )
670 drms_get_p_key( tk->p_drms, p_key );
672 for( size_t i_pos = tk->p_skcr->data.p_skcr->i_init; i_pos < p_block->i_buffer; )
674 int n = __MIN( tk->p_skcr->data.p_skcr->i_encr, p_block->i_buffer - i_pos );
675 drms_decrypt( tk->p_drms, (uint32_t*)&p_block->p_buffer[i_pos], n, p_key );
677 i_pos += __MIN( tk->p_skcr->data.p_skcr->i_decr, p_block->i_buffer - i_pos );
682 drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
683 p_block->i_buffer, NULL );
686 else if( tk->fmt.i_cat == SPU_ES )
688 if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
689 p_block->i_buffer >= 2 )
691 uint16_t i_size = GetWBE( p_block->p_buffer );
693 if( i_size + 2 <= p_block->i_buffer )
696 /* remove the length field, and append a '\0' */
697 memmove( &p_block->p_buffer[0],
698 &p_block->p_buffer[2], i_size );
699 p_block->p_buffer[i_size] = '\0';
700 p_block->i_buffer = i_size + 1;
702 /* convert \r -> \n */
703 while( ( p = strchr((char *) p_block->p_buffer, '\r' ) ) )
711 p_block->i_buffer = 0;
716 p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
718 i_delta = MP4_TrackGetPTSDelta( tk );
720 p_block->i_pts = p_block->i_dts + i_delta;
721 else if( tk->fmt.i_cat != VIDEO_ES )
722 p_block->i_pts = p_block->i_dts;
724 p_block->i_pts = VLC_TS_INVALID;
726 if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
727 es_out_Send( p_demux->out, tk->p_es, p_block );
731 if( MP4_TrackNextSample( p_demux, tk ) )
739 static void MP4_UpdateSeekpoint( demux_t *p_demux )
741 demux_sys_t *p_sys = p_demux->p_sys;
744 if( !p_sys->p_title )
746 i_time = MP4_GetMoviePTS( p_sys );
747 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
749 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
754 if( i != p_demux->info.i_seekpoint && i >= 0 )
756 p_demux->info.i_seekpoint = i;
757 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
760 /*****************************************************************************
762 ******************************************************************************/
763 static int Seek( demux_t *p_demux, mtime_t i_date )
765 demux_sys_t *p_sys = p_demux->p_sys;
766 unsigned int i_track;
768 /* First update update global time */
769 p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
770 p_sys->i_pcr = i_date;
772 /* Now for each stream try to go to this time */
773 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
775 mp4_track_t *tk = &p_sys->track[i_track];
776 MP4_TrackSeek( p_demux, tk, i_date );
778 MP4_UpdateSeekpoint( p_demux );
780 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
785 /*****************************************************************************
787 *****************************************************************************/
788 static int Control( demux_t *p_demux, int i_query, va_list args )
790 demux_sys_t *p_sys = p_demux->p_sys;
797 case DEMUX_GET_POSITION:
798 pf = (double*)va_arg( args, double * );
799 if( p_sys->i_duration > 0 )
801 *pf = (double)p_sys->i_time / (double)p_sys->i_duration;
809 case DEMUX_SET_POSITION:
810 f = (double)va_arg( args, double );
811 if( p_sys->i_timescale > 0 )
813 i64 = (int64_t)( f * (double)1000000 *
814 (double)p_sys->i_duration /
815 (double)p_sys->i_timescale );
816 return Seek( p_demux, i64 );
818 else return VLC_SUCCESS;
821 pi64 = (int64_t*)va_arg( args, int64_t * );
822 if( p_sys->i_timescale > 0 )
824 *pi64 = (mtime_t)1000000 *
825 (mtime_t)p_sys->i_time /
826 (mtime_t)p_sys->i_timescale;
832 i64 = (int64_t)va_arg( args, int64_t );
833 return Seek( p_demux, i64 );
835 case DEMUX_GET_LENGTH:
836 pi64 = (int64_t*)va_arg( args, int64_t * );
837 if( p_sys->i_timescale > 0 )
839 *pi64 = (mtime_t)1000000 *
840 (mtime_t)p_sys->i_duration /
841 (mtime_t)p_sys->i_timescale;
847 pf = (double*)va_arg( args, double* );
853 vlc_meta_t *p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t*);
854 MP4_Box_t *p_0xa9xxx;
856 MP4_Box_t *p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta/meta/ilst" );
859 p_udta = MP4_BoxGet( p_sys->p_root, "/moov/udta" );
866 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
867 p_0xa9xxx = p_0xa9xxx->p_next )
870 if( !p_0xa9xxx || !p_0xa9xxx->data.p_0xa9xxx )
873 /* FIXME FIXME: should convert from whatever the character
874 * encoding of MP4 meta data is to UTF-8. */
875 #define SET(fct) do { char *psz_utf = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text ? p_0xa9xxx->data.p_0xa9xxx->psz_text : "" ); \
876 if( psz_utf ) { EnsureUTF8( psz_utf ); \
877 fct( p_meta, psz_utf ); free( psz_utf ); } } while(0)
879 /* XXX Becarefull p_udta can have box that are not 0xa9xx */
880 switch( p_0xa9xxx->i_type )
882 case FOURCC_0xa9nam: /* Full name */
883 SET( vlc_meta_SetTitle );
886 SET( vlc_meta_SetArtist );
889 SET( vlc_meta_SetArtist );
892 SET( vlc_meta_SetCopyright );
894 case FOURCC_0xa9day: /* Creation Date */
895 SET( vlc_meta_SetDate );
897 case FOURCC_0xa9des: /* Description */
898 SET( vlc_meta_SetDescription );
900 case FOURCC_0xa9gen: /* Genre */
901 SET( vlc_meta_SetGenre );
904 case FOURCC_0xa9alb: /* Album */
905 SET( vlc_meta_SetAlbum );
908 case FOURCC_0xa9trk: /* Track */
909 SET( vlc_meta_SetTrackNum );
912 case FOURCC_0xa9cmt: /* Commment */
913 SET( vlc_meta_SetDescription );
916 case FOURCC_0xa9url: /* URL */
917 SET( vlc_meta_SetURL );
920 case FOURCC_0xa9enc: /* Encoded By */
921 SET( vlc_meta_SetEncodedBy );
925 case FOURCC_0xa9inf: /* Information */
926 case FOURCC_0xa9dir: /* Director */
927 case FOURCC_0xa9dis: /* Disclaimer */
928 case FOURCC_0xa9req: /* Requirements */
929 case FOURCC_0xa9fmt: /* Original Format */
930 case FOURCC_0xa9dsa: /* Display Source As */
931 case FOURCC_0xa9hst: /* Host Computer */
932 case FOURCC_0xa9prd: /* Producer */
933 case FOURCC_0xa9prf: /* Performers */
934 case FOURCC_0xa9ope: /* Original Performer */
935 case FOURCC_0xa9src: /* Providers Source Content */
936 case FOURCC_0xa9wrt: /* Writer */
937 case FOURCC_0xa9com: /* Composer */
938 case FOURCC_WLOC: /* Window Location */
939 /* TODO one day, but they aren't really meaningfull */
950 case DEMUX_GET_TITLE_INFO:
952 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
953 int *pi_int = (int*)va_arg( args, int* );
954 int *pi_title_offset = (int*)va_arg( args, int* );
955 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
957 if( !p_sys->p_title )
961 *ppp_title = malloc( sizeof( input_title_t**) );
962 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
963 *pi_title_offset = 0;
964 *pi_seekpoint_offset = 0;
967 case DEMUX_SET_TITLE:
969 const int i_title = (int)va_arg( args, int );
970 if( !p_sys->p_title || i_title != 0 )
974 case DEMUX_SET_SEEKPOINT:
976 const int i_seekpoint = (int)va_arg( args, int );
977 if( !p_sys->p_title )
979 return Seek( p_demux, p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset );
982 case DEMUX_SET_NEXT_DEMUX_TIME:
983 case DEMUX_SET_GROUP:
984 case DEMUX_HAS_UNSUPPORTED_META:
985 case DEMUX_GET_ATTACHMENTS:
989 msg_Warn( p_demux, "control query %u unimplemented", i_query );
994 /*****************************************************************************
995 * Close: frees unused data
996 *****************************************************************************/
997 static void Close ( vlc_object_t * p_this )
999 demux_t * p_demux = (demux_t *)p_this;
1000 demux_sys_t *p_sys = p_demux->p_sys;
1001 unsigned int i_track;
1003 msg_Dbg( p_demux, "freeing all memory" );
1005 MP4_BoxFree( p_demux->s, p_sys->p_root );
1006 for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
1008 MP4_TrackDestroy( &p_sys->track[i_track] );
1010 FREENULL( p_sys->track );
1012 if( p_sys->p_title )
1013 vlc_input_title_Delete( p_sys->p_title );
1020 /****************************************************************************
1021 * Local functions, specific to vlc
1022 ****************************************************************************/
1024 static void LoadChapterGpac( demux_t *p_demux, MP4_Box_t *p_chpl )
1026 demux_sys_t *p_sys = p_demux->p_sys;
1029 p_sys->p_title = vlc_input_title_New();
1030 for( i = 0; i < p_chpl->data.p_chpl->i_chapter; i++ )
1032 seekpoint_t *s = vlc_seekpoint_New();
1034 s->psz_name = strdup( p_chpl->data.p_chpl->chapter[i].psz_name );
1035 EnsureUTF8( s->psz_name );
1036 s->i_time_offset = p_chpl->data.p_chpl->chapter[i].i_start / 10;
1037 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1040 static void LoadChapterApple( demux_t *p_demux, mp4_track_t *tk )
1042 demux_sys_t *p_sys = p_demux->p_sys;
1044 for( tk->i_sample = 0; tk->i_sample < tk->i_sample_count; tk->i_sample++ )
1046 const int64_t i_dts = MP4_TrackGetDTS( p_demux, tk );
1047 const int64_t i_pts_delta = MP4_TrackGetPTSDelta( tk );
1048 const unsigned int i_size = MP4_TrackSampleSize( tk );
1050 if( i_size > 0 && !stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
1053 const int i_read = stream_Read( p_demux->s, p_buffer, __MIN( sizeof(p_buffer), i_size ) );
1054 const int i_len = __MIN( GetWBE(p_buffer), i_read-2 );
1058 seekpoint_t *s = vlc_seekpoint_New();
1060 s->psz_name = strndup( &p_buffer[2], i_len );
1061 EnsureUTF8( s->psz_name );
1063 s->i_time_offset = i_dts + __MAX( i_pts_delta, 0 );
1065 if( !p_sys->p_title )
1066 p_sys->p_title = vlc_input_title_New();
1067 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
1070 if( tk->i_sample+1 >= tk->chunk[tk->i_chunk].i_sample_first +
1071 tk->chunk[tk->i_chunk].i_sample_count )
1075 static void LoadChapter( demux_t *p_demux )
1077 demux_sys_t *p_sys = p_demux->p_sys;
1080 if( ( p_chpl = MP4_BoxGet( p_sys->p_root, "/moov/udta/chpl" ) ) && p_chpl->data.p_chpl->i_chapter > 0 )
1082 LoadChapterGpac( p_demux, p_chpl );
1084 else if( p_sys->p_tref_chap )
1086 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
1089 /* Load the first subtitle track like quicktime */
1090 for( i = 0; i < p_chap->i_entry_count; i++ )
1092 for( j = 0; j < p_sys->i_tracks; j++ )
1094 mp4_track_t *tk = &p_sys->track[j];
1095 if( tk->b_ok && tk->i_track_ID == p_chap->i_track_ID[i] &&
1096 tk->fmt.i_cat == SPU_ES && tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
1099 if( j < p_sys->i_tracks )
1101 LoadChapterApple( p_demux, &p_sys->track[j] );
1108 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
1109 static int TrackCreateChunksIndex( demux_t *p_demux,
1110 mp4_track_t *p_demux_track )
1112 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
1115 unsigned int i_chunk;
1116 unsigned int i_index, i_last;
1118 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
1119 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
1120 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
1122 return( VLC_EGENERIC );
1125 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
1126 if( !p_demux_track->i_chunk_count )
1128 msg_Warn( p_demux, "no chunk defined" );
1129 return( VLC_EGENERIC );
1131 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
1132 sizeof( mp4_chunk_t ) );
1133 if( p_demux_track->chunk == NULL )
1138 /* first we read chunk offset */
1139 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1141 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1143 ck->i_offset = p_co64->data.p_co64->i_chunk_offset[i_chunk];
1145 ck->i_first_dts = 0;
1146 ck->p_sample_count_dts = NULL;
1147 ck->p_sample_delta_dts = NULL;
1148 ck->p_sample_count_pts = NULL;
1149 ck->p_sample_offset_pts = NULL;
1152 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
1153 to be used for the sample XXX begin to 1
1154 We construct it begining at the end */
1155 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
1156 i_index = p_stsc->data.p_stsc->i_entry_count;
1159 msg_Warn( p_demux, "cannot read chunk table or table empty" );
1160 return( VLC_EGENERIC );
1165 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1166 i_chunk < i_last; i_chunk++ )
1168 if( i_chunk >= p_demux_track->i_chunk_count )
1170 msg_Warn( p_demux, "corrupted chunk table" );
1171 return VLC_EGENERIC;
1174 p_demux_track->chunk[i_chunk].i_sample_description_index =
1175 p_stsc->data.p_stsc->i_sample_description_index[i_index];
1176 p_demux_track->chunk[i_chunk].i_sample_count =
1177 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
1179 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
1182 p_demux_track->chunk[0].i_sample_first = 0;
1183 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1185 p_demux_track->chunk[i_chunk].i_sample_first =
1186 p_demux_track->chunk[i_chunk-1].i_sample_first +
1187 p_demux_track->chunk[i_chunk-1].i_sample_count;
1190 msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
1191 p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
1196 static int TrackCreateSamplesIndex( demux_t *p_demux,
1197 mp4_track_t *p_demux_track )
1200 MP4_Box_data_stsz_t *stsz;
1201 MP4_Box_data_stts_t *stts;
1202 /* TODO use also stss and stsh table for seeking */
1203 /* FIXME use edit table */
1208 int64_t i_index_sample_used;
1213 * Gives the sample size for each samples. There is also a stz2 table
1214 * (compressed form) that we need to implement TODO */
1215 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stsz" );
1218 /* FIXME and stz2 */
1219 msg_Warn( p_demux, "cannot find STSZ box" );
1220 return VLC_EGENERIC;
1222 stsz = p_box->data.p_stsz;
1225 * Gives mapping between sample and decoding time
1227 p_box = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
1230 msg_Warn( p_demux, "cannot find STTS box" );
1231 return VLC_EGENERIC;
1233 stts = p_box->data.p_stts;
1235 /* Use stsz table to create a sample number -> sample size table */
1236 p_demux_track->i_sample_count = stsz->i_sample_count;
1237 if( stsz->i_sample_size )
1239 /* 1: all sample have the same size, so no need to construct a table */
1240 p_demux_track->i_sample_size = stsz->i_sample_size;
1241 p_demux_track->p_sample_size = NULL;
1245 /* 2: each sample can have a different size */
1246 p_demux_track->i_sample_size = 0;
1247 p_demux_track->p_sample_size =
1248 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
1249 if( p_demux_track->p_sample_size == NULL )
1252 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
1254 p_demux_track->p_sample_size[i_sample] =
1255 stsz->i_entry_size[i_sample];
1259 /* Use stts table to create a sample number -> dts table.
1260 * XXX: if we don't want to waste too much memory, we can't expand
1261 * the box! so each chunk will contain an "extract" of this table
1262 * for fast research (problem with raw stream where a sample is sometime
1263 * just channels*bits_per_sample/8 */
1266 i_index = 0; i_index_sample_used = 0;
1267 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1269 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1270 int64_t i_entry, i_sample_count, i;
1272 /* save first dts */
1273 ck->i_first_dts = i_next_dts;
1274 ck->i_last_dts = i_next_dts;
1276 /* count how many entries are needed for this chunk
1277 * for p_sample_delta_dts and p_sample_count_dts */
1278 i_sample_count = ck->i_sample_count;
1281 while( i_sample_count > 0 )
1283 i_sample_count -= stts->i_sample_count[i_index+i_entry];
1284 /* don't count already used sample in this entry */
1286 i_sample_count += i_index_sample_used;
1292 ck->p_sample_count_dts = calloc( i_entry, sizeof( uint32_t ) );
1293 ck->p_sample_delta_dts = calloc( i_entry, sizeof( uint32_t ) );
1295 if( !ck->p_sample_count_dts || !ck->p_sample_delta_dts )
1299 i_sample_count = ck->i_sample_count;
1300 for( i = 0; i < i_entry; i++ )
1305 i_rest = stts->i_sample_count[i_index] - i_index_sample_used;
1307 i_used = __MIN( i_rest, i_sample_count );
1309 i_index_sample_used += i_used;
1310 i_sample_count -= i_used;
1311 i_next_dts += i_used * stts->i_sample_delta[i_index];
1313 ck->p_sample_count_dts[i] = i_used;
1314 ck->p_sample_delta_dts[i] = stts->i_sample_delta[i_index];
1316 ck->i_last_dts = i_next_dts - ck->p_sample_delta_dts[i];
1318 if( i_index_sample_used >= stts->i_sample_count[i_index] )
1321 i_index_sample_used = 0;
1327 * Gives the delta between decoding time (dts) and composition table (pts)
1329 p_box = MP4_BoxGet( p_demux_track->p_stbl, "ctts" );
1332 MP4_Box_data_ctts_t *ctts = p_box->data.p_ctts;
1334 msg_Warn( p_demux, "CTTS table" );
1336 /* Create pts-dts table per chunk */
1337 i_index = 0; i_index_sample_used = 0;
1338 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
1340 mp4_chunk_t *ck = &p_demux_track->chunk[i_chunk];
1341 int64_t i_entry, i_sample_count, i;
1343 /* count how many entries are needed for this chunk
1344 * for p_sample_delta_dts and p_sample_count_dts */
1345 i_sample_count = ck->i_sample_count;
1348 while( i_sample_count > 0 )
1350 i_sample_count -= ctts->i_sample_count[i_index+i_entry];
1352 /* don't count already used sample in this entry */
1354 i_sample_count += i_index_sample_used;
1360 ck->p_sample_count_pts = calloc( i_entry, sizeof( uint32_t ) );
1361 ck->p_sample_offset_pts = calloc( i_entry, sizeof( int32_t ) );
1362 if( !ck->p_sample_count_pts || !ck->p_sample_offset_pts )
1366 i_sample_count = ck->i_sample_count;
1367 for( i = 0; i < i_entry; i++ )
1372 i_rest = ctts->i_sample_count[i_index] -
1373 i_index_sample_used;
1375 i_used = __MIN( i_rest, i_sample_count );
1377 i_index_sample_used += i_used;
1378 i_sample_count -= i_used;
1380 ck->p_sample_count_pts[i] = i_used;
1381 ck->p_sample_offset_pts[i] = ctts->i_sample_offset[i_index];
1383 if( i_index_sample_used >= ctts->i_sample_count[i_index] )
1386 i_index_sample_used = 0;
1392 msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:%"PRId64"s",
1393 p_demux_track->i_track_ID, p_demux_track->i_sample_count,
1394 i_next_dts / p_demux_track->i_timescale );
1400 * It computes the sample rate for a video track using the given sample
1403 static void TrackGetESSampleRate( unsigned *pi_num, unsigned *pi_den,
1404 const mp4_track_t *p_track,
1405 unsigned i_sd_index,
1411 if( p_track->i_chunk_count <= 0 )
1415 const mp4_chunk_t *p_chunk = &p_track->chunk[i_chunk];
1416 while( p_chunk > &p_track->chunk[0] &&
1417 p_chunk[-1].i_sample_description_index == i_sd_index )
1422 uint64_t i_sample = 0;
1423 uint64_t i_first_dts = p_chunk->i_first_dts;
1424 uint64_t i_last_dts;
1427 i_sample += p_chunk->i_sample_count;
1428 i_last_dts = p_chunk->i_last_dts;
1431 while( p_chunk < &p_track->chunk[p_track->i_chunk_count] &&
1432 p_chunk->i_sample_description_index == i_sd_index );
1434 if( i_sample > 1 && i_first_dts < i_last_dts )
1435 vlc_ureduce( pi_num, pi_den,
1436 ( i_sample - 1) * p_track->i_timescale,
1437 i_last_dts - i_first_dts,
1443 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
1445 static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
1446 unsigned int i_chunk, es_out_id_t **pp_es )
1448 const unsigned i_sample_description_index =
1449 p_track->chunk[i_chunk].i_sample_description_index;
1450 MP4_Box_t *p_sample;
1457 if( !i_sample_description_index )
1459 msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
1460 p_track->i_track_ID );
1461 return VLC_EGENERIC;
1464 p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
1465 i_sample_description_index - 1 );
1468 ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
1470 msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
1471 p_track->i_track_ID );
1472 return VLC_EGENERIC;
1475 p_track->p_sample = p_sample;
1477 if( ( p_frma = MP4_BoxGet( p_track->p_sample, "sinf/frma" ) ) )
1479 msg_Warn( p_demux, "Original Format Box: %4.4s", (char *)&p_frma->data.p_frma->i_type );
1481 p_sample->i_type = p_frma->data.p_frma->i_type;
1484 if( p_track->fmt.i_cat == AUDIO_ES && ( p_track->i_sample_size == 1 || p_track->i_sample_size == 2 ) )
1486 MP4_Box_data_sample_soun_t *p_soun;
1488 p_soun = p_sample->data.p_sample_soun;
1490 if( p_soun->i_qt_version == 0 )
1492 switch( p_sample->i_type )
1494 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
1495 p_soun->i_qt_version = 1;
1496 p_soun->i_sample_per_packet = 64;
1497 p_soun->i_bytes_per_packet = 34;
1498 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
1499 p_soun->i_bytes_per_sample = 2;
1501 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
1502 p_soun->i_qt_version = 1;
1503 p_soun->i_sample_per_packet = 6;
1504 p_soun->i_bytes_per_packet = 2;
1505 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1506 p_soun->i_bytes_per_sample = 2;
1508 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
1509 p_soun->i_qt_version = 1;
1510 p_soun->i_sample_per_packet = 12;
1511 p_soun->i_bytes_per_packet = 2;
1512 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
1513 p_soun->i_bytes_per_sample = 2;
1515 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
1516 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
1517 p_soun->i_samplesize = 8;
1519 case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
1520 case VLC_FOURCC( 'r', 'a', 'w', ' ' ):
1521 case VLC_FOURCC( 't', 'w', 'o', 's' ):
1522 case VLC_FOURCC( 's', 'o', 'w', 't' ):
1523 /* What would be the fun if you could trust the .mov */
1524 p_track->i_sample_size = ((p_soun->i_samplesize+7)/8) * p_soun->i_channelcount;
1531 else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
1533 p_soun->i_qt_version = 0;
1538 switch( p_track->fmt.i_cat )
1541 p_track->fmt.video.i_width = p_sample->data.p_sample_vide->i_width;
1542 p_track->fmt.video.i_height = p_sample->data.p_sample_vide->i_height;
1543 p_track->fmt.video.i_bits_per_pixel =
1544 p_sample->data.p_sample_vide->i_depth;
1546 /* fall on display size */
1547 if( p_track->fmt.video.i_width <= 0 )
1548 p_track->fmt.video.i_width = p_track->i_width;
1549 if( p_track->fmt.video.i_height <= 0 )
1550 p_track->fmt.video.i_height = p_track->i_height;
1552 /* Find out apect ratio from display size */
1553 if( p_track->i_width > 0 && p_track->i_height > 0 &&
1554 /* Work-around buggy muxed files */
1555 p_sample->data.p_sample_vide->i_width != p_track->i_width )
1557 p_track->fmt.video.i_sar_num = p_track->i_width / p_track->fmt.video.i_height;
1558 p_track->fmt.video.i_sar_den = p_track->i_height * p_track->fmt.video.i_width;
1561 /* Support for cropping (eg. in H263 files) */
1562 p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
1563 p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
1566 TrackGetESSampleRate( &p_track->fmt.video.i_frame_rate,
1567 &p_track->fmt.video.i_frame_rate_base,
1568 p_track, i_sample_description_index, i_chunk );
1569 p_demux->p_sys->f_fps = (float)p_track->fmt.video.i_frame_rate /
1570 (float)p_track->fmt.video.i_frame_rate_base;
1574 p_track->fmt.audio.i_channels =
1575 p_sample->data.p_sample_soun->i_channelcount;
1576 p_track->fmt.audio.i_rate =
1577 p_sample->data.p_sample_soun->i_sampleratehi;
1578 p_track->fmt.i_bitrate = p_sample->data.p_sample_soun->i_channelcount *
1579 p_sample->data.p_sample_soun->i_sampleratehi *
1580 p_sample->data.p_sample_soun->i_samplesize;
1581 p_track->fmt.audio.i_bitspersample =
1582 p_sample->data.p_sample_soun->i_samplesize;
1584 if( p_track->i_sample_size != 0 &&
1585 p_sample->data.p_sample_soun->i_qt_version == 1 && p_sample->data.p_sample_soun->i_sample_per_packet <= 0 )
1587 msg_Err( p_demux, "Invalid sample per packet value for qt_version 1" );
1588 return VLC_EGENERIC;
1597 /* It's a little ugly but .. there are special cases */
1598 switch( p_sample->i_type )
1600 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
1601 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
1603 MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1604 p_track->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
1605 if( p_track->i_sample_size > 1 )
1606 p_soun->i_qt_version = 0;
1609 case( VLC_FOURCC( 'a', 'c', '-', '3' ) ):
1611 MP4_Box_t *p_dac3_box = MP4_BoxGet( p_sample, "dac3", 0 );
1613 p_track->fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
1616 static const int pi_bitrate[] = {
1623 MP4_Box_data_dac3_t *p_dac3 = p_dac3_box->data.p_dac3;
1624 p_track->fmt.audio.i_channels = 0;
1625 p_track->fmt.i_bitrate = 0;
1626 if( p_dac3->i_bitrate_code < sizeof(pi_bitrate)/sizeof(*pi_bitrate) )
1627 p_track->fmt.i_bitrate = pi_bitrate[p_dac3->i_bitrate_code] * 1000;
1628 p_track->fmt.audio.i_bitspersample = 0;
1632 case( VLC_FOURCC( 'e', 'c', '-', '3' ) ):
1634 p_track->fmt.i_codec = VLC_FOURCC( 'e', 'a', 'c', '3' );
1638 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
1639 case( VLC_FOURCC( 'N', 'O', 'N', 'E' ) ):
1641 MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1643 if(p_soun && (p_soun->i_samplesize+7)/8 == 1 )
1644 p_track->fmt.i_codec = VLC_FOURCC( 'u', '8', ' ', ' ' );
1646 p_track->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
1648 /* Buggy files workaround */
1649 if( p_sample->data.p_sample_soun && (p_track->i_timescale !=
1650 p_sample->data.p_sample_soun->i_sampleratehi) )
1652 MP4_Box_data_sample_soun_t *p_soun =
1653 p_sample->data.p_sample_soun;
1655 msg_Warn( p_demux, "i_timescale (%"PRIu64") != i_sampleratehi "
1656 "(%u), making both equal (report any problem).",
1657 p_track->i_timescale, p_soun->i_sampleratehi );
1659 if( p_soun->i_sampleratehi )
1660 p_track->i_timescale = p_soun->i_sampleratehi;
1662 p_soun->i_sampleratehi = p_track->i_timescale;
1667 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
1668 p_track->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '3' );
1671 case( VLC_FOURCC( 't', 'e', 'x', 't' ) ):
1672 case( VLC_FOURCC( 't', 'x', '3', 'g' ) ):
1673 p_track->fmt.i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
1674 /* FIXME: Not true, could be UTF-16 with a Byte Order Mark (0xfeff) */
1675 /* FIXME UTF-8 doesn't work here ? */
1676 if( p_track->b_mac_encoding )
1677 p_track->fmt.subs.psz_encoding = strdup( "MAC" );
1679 p_track->fmt.subs.psz_encoding = strdup( "UTF-8" );
1682 case VLC_FOURCC('y','v','1','2'):
1683 p_track->fmt.i_codec = VLC_FOURCC('Y','V','1','2');
1685 case VLC_FOURCC('y','u','v','2'):
1686 p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
1689 case VLC_FOURCC('i','n','2','4'):
1690 /* in in24/in32 there's enda-atom to tell it's little-endian (if present) */
1691 if( ( MP4_BoxGet( p_sample, "wave/enda" ) ) ||
1692 ( MP4_BoxGet( p_sample, "enda" ) ) )
1694 p_track->fmt.i_codec = VLC_FOURCC('4','2','n','i');
1696 p_track->fmt.i_codec = p_sample->i_type;
1701 p_track->fmt.i_codec = p_sample->i_type;
1705 /* now see if esds is present and if so create a data packet
1706 with decoder_specific_info */
1707 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
1708 if( ( ( p_esds = MP4_BoxGet( p_sample, "esds" ) ) ||
1709 ( p_esds = MP4_BoxGet( p_sample, "wave/esds" ) ) )&&
1710 ( p_esds->data.p_esds )&&
1713 /* First update information based on i_objectTypeIndication */
1714 switch( p_decconfig->i_objectTypeIndication )
1716 case( 0x20 ): /* MPEG4 VIDEO */
1717 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','v' );
1720 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1727 case( 0x65): /* MPEG2 video */
1728 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1730 /* Theses are MPEG2-AAC */
1731 case( 0x66): /* main profile */
1732 case( 0x67): /* Low complexity profile */
1733 case( 0x68): /* Scaleable Sampling rate profile */
1734 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1736 /* true MPEG 2 audio */
1738 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1740 case( 0x6a): /* MPEG1 video */
1741 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1743 case( 0x6b): /* MPEG1 audio */
1744 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','a' );
1746 case( 0x6c ): /* jpeg */
1747 p_track->fmt.i_codec = VLC_FOURCC( 'j','p','e','g' );
1749 case( 0x6d ): /* png */
1750 p_track->fmt.i_codec = VLC_FOURCC( 'p','n','g',' ' );
1752 case( 0x6e ): /* jpeg200 */
1753 p_track->fmt.i_codec = VLC_FOURCC( 'M','J','2','C' );
1755 case( 0xa3 ): /* vc1 */
1756 p_track->fmt.i_codec = VLC_FOURCC( 'W','V','C','1' );
1760 case( 0xe0 ): /* NeroDigital: dvd subs */
1761 if( p_track->fmt.i_cat == SPU_ES )
1763 p_track->fmt.i_codec = VLC_FOURCC( 's','p','u',' ' );
1764 if( p_track->i_width > 0 )
1765 p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
1766 if( p_track->i_height > 0 )
1767 p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
1770 case( 0xe1 ): /* QCelp for 3gp */
1771 if( p_track->fmt.i_cat == AUDIO_ES )
1773 p_track->fmt.i_codec = VLC_FOURCC( 'Q','c','l','p' );
1779 /* Unknown entry, but don't touch i_fourcc */
1781 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1782 p_decconfig->i_objectTypeIndication,
1783 p_track->i_track_ID );
1786 p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
1787 if( p_track->fmt.i_extra > 0 )
1789 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1790 memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
1791 p_track->fmt.i_extra );
1796 switch( p_sample->i_type )
1798 /* qt decoder, send the complete chunk */
1799 case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
1800 case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
1801 case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
1802 case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
1803 case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
1804 case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
1805 case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
1806 case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
1807 case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
1808 case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
1809 case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
1810 case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
1811 p_track->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1813 /* qt decoder, send the complete chunk */
1814 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1815 case VLC_FOURCC( 'S', 'V', 'Q', '1' ):
1816 case VLC_FOURCC( 'V', 'P', '3', '1' ):
1817 case VLC_FOURCC( '3', 'I', 'V', '1' ):
1818 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1819 p_track->fmt.i_extra =
1820 p_sample->data.p_sample_vide->i_qt_image_description;
1821 if( p_track->fmt.i_extra > 0 )
1823 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1824 memcpy( p_track->fmt.p_extra,
1825 p_sample->data.p_sample_vide->p_qt_image_description,
1826 p_track->fmt.i_extra);
1829 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1830 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1831 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1832 case VLC_FOURCC( 'a', 'l', 'a', 'c' ):
1833 p_track->fmt.i_extra =
1834 p_sample->data.p_sample_soun->i_qt_description;
1835 if( p_track->fmt.i_extra > 0 )
1837 p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
1838 memcpy( p_track->fmt.p_extra,
1839 p_sample->data.p_sample_soun->p_qt_description,
1840 p_track->fmt.i_extra);
1844 /* avc1: send avcC (h264 without annexe B, ie without start code)*/
1845 case VLC_FOURCC( 'a', 'v', 'c', '1' ):
1847 MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
1851 p_track->fmt.i_extra = p_avcC->data.p_avcC->i_avcC;
1852 if( p_track->fmt.i_extra > 0 )
1854 p_track->fmt.p_extra = malloc( p_avcC->data.p_avcC->i_avcC );
1855 memcpy( p_track->fmt.p_extra, p_avcC->data.p_avcC->p_avcC,
1856 p_track->fmt.i_extra );
1861 msg_Err( p_demux, "missing avcC" );
1866 case VLC_FOURCC('m','s',0x00,0x02):
1867 case VLC_FOURCC('m','s',0x00,0x11):
1868 case VLC_FOURCC('Q','c','l','p'):
1869 p_track->fmt.audio.i_blockalign = p_sample->data.p_sample_soun->i_bytes_per_frame;
1880 *pp_es = es_out_Add( p_demux->out, &p_track->fmt );
1885 /* given a time it return sample/chunk
1886 * it also update elst field of the track
1888 static int TrackTimeToSampleChunk( demux_t *p_demux, mp4_track_t *p_track,
1889 int64_t i_start, uint32_t *pi_chunk,
1890 uint32_t *pi_sample )
1892 demux_sys_t *p_sys = p_demux->p_sys;
1895 unsigned int i_sample;
1896 unsigned int i_chunk;
1899 /* FIXME see if it's needed to check p_track->i_chunk_count */
1900 if( p_track->i_chunk_count == 0 )
1901 return( VLC_EGENERIC );
1903 /* handle elst (find the correct one) */
1904 MP4_TrackSetELST( p_demux, p_track, i_start );
1905 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
1907 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
1908 int64_t i_mvt= i_start * p_sys->i_timescale / (int64_t)1000000;
1910 /* now calculate i_start for this elst */
1912 i_start -= p_track->i_elst_time * INT64_C(1000000) / p_sys->i_timescale;
1920 /* to track time scale */
1921 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1922 /* add elst offset */
1923 if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
1924 elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
1925 elst->i_media_time[p_track->i_elst] > 0 )
1927 i_start += elst->i_media_time[p_track->i_elst];
1930 msg_Dbg( p_demux, "elst (%d) gives %"PRId64"ms (movie)-> %"PRId64
1931 "ms (track)", p_track->i_elst,
1932 i_mvt * 1000 / p_sys->i_timescale,
1933 i_start * 1000 / p_track->i_timescale );
1937 /* convert absolute time to in timescale unit */
1938 i_start = i_start * p_track->i_timescale / (int64_t)1000000;
1941 /* we start from sample 0/chunk 0, hope it won't take too much time */
1942 /* *** find good chunk *** */
1943 for( i_chunk = 0; ; i_chunk++ )
1945 if( i_chunk + 1 >= p_track->i_chunk_count )
1947 /* at the end and can't check if i_start in this chunk,
1948 it will be check while searching i_sample */
1949 i_chunk = p_track->i_chunk_count - 1;
1953 if( (uint64_t)i_start >= p_track->chunk[i_chunk].i_first_dts &&
1954 (uint64_t)i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1960 /* *** find sample in the chunk *** */
1961 i_sample = p_track->chunk[i_chunk].i_sample_first;
1962 i_dts = p_track->chunk[i_chunk].i_first_dts;
1963 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1966 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1967 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < (uint64_t)i_start )
1970 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1971 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1973 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1978 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1982 i_sample += ( i_start - i_dts ) /
1983 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1988 if( i_sample >= p_track->i_sample_count )
1990 msg_Warn( p_demux, "track[Id 0x%x] will be disabled "
1991 "(seeking too far) chunk=%d sample=%d",
1992 p_track->i_track_ID, i_chunk, i_sample );
1993 return( VLC_EGENERIC );
1997 /* *** Try to find nearest sync points *** */
1998 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
2000 unsigned int i_index;
2002 "track[Id 0x%x] using Sync Sample Box (stss)",
2003 p_track->i_track_ID );
2004 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
2006 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
2010 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
2012 p_stss->data.p_stss->i_sample_number[i_index-1] );
2013 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
2014 /* new i_sample is less than old so i_chunk can only decreased */
2015 while( i_chunk > 0 &&
2016 i_sample < p_track->chunk[i_chunk].i_sample_first )
2023 msg_Dbg( p_demux, "stts gives %d --> %d (sample number)",
2025 p_stss->data.p_stss->i_sample_number[i_index] );
2026 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
2027 /* new i_sample is more than old so i_chunk can only increased */
2028 while( i_chunk < p_track->i_chunk_count - 1 &&
2029 i_sample >= p_track->chunk[i_chunk].i_sample_first +
2030 p_track->chunk[i_chunk].i_sample_count )
2041 msg_Dbg( p_demux, "track[Id 0x%x] does not provide Sync "
2042 "Sample Box (stss)", p_track->i_track_ID );
2045 *pi_chunk = i_chunk;
2046 *pi_sample = i_sample;
2051 static int TrackGotoChunkSample( demux_t *p_demux, mp4_track_t *p_track,
2052 unsigned int i_chunk, unsigned int i_sample )
2054 bool b_reselect = false;
2056 /* now see if actual es is ok */
2057 if( p_track->i_chunk >= p_track->i_chunk_count ||
2058 p_track->chunk[p_track->i_chunk].i_sample_description_index !=
2059 p_track->chunk[i_chunk].i_sample_description_index )
2061 msg_Warn( p_demux, "recreate ES for track[Id 0x%x]",
2062 p_track->i_track_ID );
2064 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
2065 p_track->p_es, &b_reselect );
2067 es_out_Del( p_demux->out, p_track->p_es );
2069 p_track->p_es = NULL;
2071 if( TrackCreateES( p_demux, p_track, i_chunk, &p_track->p_es ) )
2073 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2074 p_track->i_track_ID );
2076 p_track->b_ok = false;
2077 p_track->b_selected = false;
2078 return VLC_EGENERIC;
2082 /* select again the new decoder */
2085 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_track->p_es );
2088 p_track->i_chunk = i_chunk;
2089 p_track->i_sample = i_sample;
2091 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2094 /****************************************************************************
2096 ****************************************************************************
2097 * Parse track information and create all needed data to run a track
2098 * If it succeed b_ok is set to 1 else to 0
2099 ****************************************************************************/
2100 static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
2101 MP4_Box_t *p_box_trak,
2102 bool b_force_enable )
2104 demux_sys_t *p_sys = p_demux->p_sys;
2106 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
2107 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
2122 /* hint track unsupported */
2124 /* set default value (-> track unusable) */
2125 p_track->b_ok = false;
2126 p_track->b_enable = false;
2127 p_track->b_selected = false;
2128 p_track->b_chapter = false;
2129 p_track->b_mac_encoding = false;
2131 es_format_Init( &p_track->fmt, UNKNOWN_ES, 0 );
2138 /* do we launch this track by default ? */
2140 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
2141 if( !p_track->b_enable )
2142 p_track->fmt.i_priority = -1;
2144 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
2145 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
2146 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
2150 /* msg_Warn( p_demux, "unhandled box: tref --> FIXME" ); */
2153 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
2154 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
2156 if( ( !p_mdhd )||( !p_hdlr ) )
2161 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
2162 if( !p_track->i_timescale )
2165 if( p_mdhd->data.p_mdhd->i_language_code < 0x800 )
2167 /* We can convert i_language_code into iso 639 code,
2169 strcpy( language, MP4_ConvertMacCode( p_mdhd->data.p_mdhd->i_language_code ) );
2170 p_track->b_mac_encoding = true;
2174 for( i = 0; i < 3; i++ )
2175 language[i] = p_mdhd->data.p_mdhd->i_language[i];
2179 switch( p_hdlr->data.p_hdlr->i_handler_type )
2181 case( FOURCC_soun ):
2182 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
2186 p_track->fmt.i_cat = AUDIO_ES;
2189 case( FOURCC_vide ):
2190 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
2194 p_track->fmt.i_cat = VIDEO_ES;
2197 case( FOURCC_text ):
2198 case( FOURCC_subp ):
2199 case( FOURCC_tx3g ):
2200 case( FOURCC_sbtl ):
2201 p_track->fmt.i_cat = SPU_ES;
2208 p_track->i_elst = 0;
2209 p_track->i_elst_time = 0;
2210 if( ( p_track->p_elst = p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
2212 MP4_Box_data_elst_t *elst = p_elst->data.p_elst;
2215 msg_Warn( p_demux, "elst box found" );
2216 for( i = 0; i < elst->i_entry_count; i++ )
2218 msg_Dbg( p_demux, " - [%d] duration=%"PRId64"ms media time=%"PRId64
2219 "ms) rate=%d.%d", i,
2220 elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
2221 elst->i_media_time[i] >= 0 ?
2222 (int64_t)(elst->i_media_time[i] * 1000 / p_track->i_timescale) :
2224 elst->i_media_rate_integer[i],
2225 elst->i_media_rate_fraction[i] );
2232 p_dinf = MP4_BoxGet( p_minf, "dinf" );
2234 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) ||
2235 !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
2240 p_drms = MP4_BoxGet( p_track->p_stsd, "drms" );
2241 p_track->b_drms = p_drms != NULL;
2242 p_track->p_drms = p_track->b_drms ?
2243 p_drms->data.p_sample_soun->p_drms : NULL;
2247 p_drms = MP4_BoxGet( p_track->p_stsd, "drmi" );
2248 p_track->b_drms = p_drms != NULL;
2249 p_track->p_drms = p_track->b_drms ?
2250 p_drms->data.p_sample_vide->p_drms : NULL;
2254 p_track->p_skcr = MP4_BoxGet( p_drms, "sinf/skcr" );
2257 if( *language && strcmp( language, "```" ) && strcmp( language, "und" ) )
2259 p_track->fmt.psz_language = strdup( language );
2262 p_udta = MP4_BoxGet( p_box_trak, "udta" );
2265 MP4_Box_t *p_0xa9xxx;
2266 for( p_0xa9xxx = p_udta->p_first; p_0xa9xxx != NULL;
2267 p_0xa9xxx = p_0xa9xxx->p_next )
2269 switch( p_0xa9xxx->i_type )
2271 case FOURCC_0xa9nam:
2272 p_track->fmt.psz_description =
2273 strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
2279 /* Create chunk index table and sample index table */
2280 if( TrackCreateChunksIndex( p_demux,p_track ) ||
2281 TrackCreateSamplesIndex( p_demux, p_track ) )
2283 return; /* cannot create chunks index */
2286 p_track->i_chunk = 0;
2287 p_track->i_sample = 0;
2289 /* Mark chapter only track */
2290 if( p_sys->p_tref_chap )
2292 MP4_Box_data_tref_generic_t *p_chap = p_sys->p_tref_chap->data.p_tref_generic;
2295 for( i = 0; i < p_chap->i_entry_count; i++ )
2297 if( p_track->i_track_ID == p_chap->i_track_ID[i] )
2299 p_track->b_chapter = true;
2300 p_track->b_enable = false;
2307 if( b_force_enable &&
2308 ( p_track->fmt.i_cat == VIDEO_ES || p_track->fmt.i_cat == AUDIO_ES ) )
2310 msg_Warn( p_demux, "Enabling track[Id 0x%x] (buggy file without enabled track)",
2311 p_track->i_track_ID );
2312 p_track->b_enable = true;
2313 p_track->fmt.i_priority = 0;
2316 p_track->p_es = NULL;
2317 if( TrackCreateES( p_demux,
2318 p_track, p_track->i_chunk,
2319 p_track->b_chapter ? NULL : &p_track->p_es ) )
2321 msg_Err( p_demux, "cannot create es for track[Id 0x%x]",
2322 p_track->i_track_ID );
2325 p_track->b_ok = true;
2329 for( i = 0; i < p_track->i_chunk_count; i++ )
2331 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n",
2332 i, p_track->chunk[i].i_sample_count,
2333 p_track->chunk[i].i_first_dts );
2340 /****************************************************************************
2342 ****************************************************************************
2343 * Destroy a track created by MP4_TrackCreate.
2344 ****************************************************************************/
2345 static void MP4_TrackDestroy( mp4_track_t *p_track )
2347 unsigned int i_chunk;
2349 p_track->b_ok = false;
2350 p_track->b_enable = false;
2351 p_track->b_selected = false;
2353 es_format_Clean( &p_track->fmt );
2355 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
2357 if( p_track->chunk )
2359 FREENULL(p_track->chunk[i_chunk].p_sample_count_dts);
2360 FREENULL(p_track->chunk[i_chunk].p_sample_delta_dts );
2362 FREENULL(p_track->chunk[i_chunk].p_sample_count_pts);
2363 FREENULL(p_track->chunk[i_chunk].p_sample_offset_pts );
2366 FREENULL( p_track->chunk );
2368 if( !p_track->i_sample_size )
2370 FREENULL( p_track->p_sample_size );
2374 static int MP4_TrackSelect( demux_t *p_demux, mp4_track_t *p_track,
2377 if( !p_track->b_ok || p_track->b_chapter )
2379 return VLC_EGENERIC;
2382 if( p_track->b_selected )
2384 msg_Warn( p_demux, "track[Id 0x%x] already selected",
2385 p_track->i_track_ID );
2389 return MP4_TrackSeek( p_demux, p_track, i_start );
2392 static void MP4_TrackUnselect( demux_t *p_demux, mp4_track_t *p_track )
2394 if( !p_track->b_ok || p_track->b_chapter )
2399 if( !p_track->b_selected )
2401 msg_Warn( p_demux, "track[Id 0x%x] already unselected",
2402 p_track->i_track_ID );
2407 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE,
2408 p_track->p_es, false );
2411 p_track->b_selected = false;
2414 static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
2420 if( !p_track->b_ok || p_track->b_chapter )
2421 return VLC_EGENERIC;
2423 p_track->b_selected = false;
2425 if( TrackTimeToSampleChunk( p_demux, p_track, i_start,
2426 &i_chunk, &i_sample ) )
2428 msg_Warn( p_demux, "cannot select track[Id 0x%x]",
2429 p_track->i_track_ID );
2430 return VLC_EGENERIC;
2433 p_track->b_selected = true;
2435 if( !TrackGotoChunkSample( p_demux, p_track, i_chunk, i_sample ) )
2436 p_track->b_selected = true;
2438 return p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC;
2443 * 3 types: for audio
2446 #define QT_V0_MAX_SAMPLES 1024
2447 static int MP4_TrackSampleSize( mp4_track_t *p_track )
2450 MP4_Box_data_sample_soun_t *p_soun;
2452 if( p_track->i_sample_size == 0 )
2454 /* most simple case */
2455 return p_track->p_sample_size[p_track->i_sample];
2457 if( p_track->fmt.i_cat != AUDIO_ES )
2459 return p_track->i_sample_size;
2462 p_soun = p_track->p_sample->data.p_sample_soun;
2464 if( p_soun->i_qt_version == 1 )
2466 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count;
2467 if( p_track->fmt.audio.i_blockalign > 1 )
2468 i_samples = p_soun->i_sample_per_packet;
2470 i_size = i_samples / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2472 else if( p_track->i_sample_size > 256 )
2474 /* We do that so we don't read too much data
2475 * (in this case we are likely dealing with compressed data) */
2476 i_size = p_track->i_sample_size;
2480 /* Read a bunch of samples at once */
2481 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
2482 ( p_track->i_sample -
2483 p_track->chunk[p_track->i_chunk].i_sample_first );
2485 i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
2486 i_size = i_samples * p_track->i_sample_size;
2489 //fprintf( stderr, "size=%d\n", i_size );
2493 static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
2495 unsigned int i_sample;
2498 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
2500 if( p_track->i_sample_size )
2502 MP4_Box_data_sample_soun_t *p_soun =
2503 p_track->p_sample->data.p_sample_soun;
2505 if( p_soun->i_qt_version == 0 )
2507 i_pos += ( p_track->i_sample -
2508 p_track->chunk[p_track->i_chunk].i_sample_first ) *
2509 p_track->i_sample_size;
2513 /* we read chunk by chunk unless a blockalign is requested */
2514 if( p_track->fmt.audio.i_blockalign > 1 )
2515 i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) /
2516 p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
2521 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
2522 i_sample < p_track->i_sample; i_sample++ )
2524 i_pos += p_track->p_sample_size[i_sample];
2531 static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
2533 if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
2535 MP4_Box_data_sample_soun_t *p_soun;
2537 p_soun = p_track->p_sample->data.p_sample_soun;
2539 if( p_soun->i_qt_version == 1 )
2541 /* we read chunk by chunk unless a blockalign is requested */
2542 if( p_track->fmt.audio.i_blockalign > 1 )
2543 p_track->i_sample += p_soun->i_sample_per_packet;
2545 p_track->i_sample += p_track->chunk[p_track->i_chunk].i_sample_count;
2547 else if( p_track->i_sample_size > 256 )
2549 /* We do that so we don't read too much data
2550 * (in this case we are likely dealing with compressed data) */
2551 p_track->i_sample += 1;
2556 p_track->i_sample += QT_V0_MAX_SAMPLES;
2557 if( p_track->i_sample >
2558 p_track->chunk[p_track->i_chunk].i_sample_first +
2559 p_track->chunk[p_track->i_chunk].i_sample_count )
2562 p_track->chunk[p_track->i_chunk].i_sample_first +
2563 p_track->chunk[p_track->i_chunk].i_sample_count;
2569 p_track->i_sample++;
2572 if( p_track->i_sample >= p_track->i_sample_count )
2573 return VLC_EGENERIC;
2575 /* Have we changed chunk ? */
2576 if( p_track->i_sample >=
2577 p_track->chunk[p_track->i_chunk].i_sample_first +
2578 p_track->chunk[p_track->i_chunk].i_sample_count )
2580 if( TrackGotoChunkSample( p_demux, p_track, p_track->i_chunk + 1,
2581 p_track->i_sample ) )
2583 msg_Warn( p_demux, "track[0x%x] will be disabled "
2584 "(cannot restart decoder)", p_track->i_track_ID );
2585 MP4_TrackUnselect( p_demux, p_track );
2586 return VLC_EGENERIC;
2590 /* Have we changed elst */
2591 if( p_track->p_elst && p_track->p_elst->data.p_elst->i_entry_count > 0 )
2593 demux_sys_t *p_sys = p_demux->p_sys;
2594 MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;
2595 uint64_t i_mvt = MP4_TrackGetDTS( p_demux, p_track ) *
2596 p_sys->i_timescale / (int64_t)1000000;
2598 if( (unsigned int)p_track->i_elst < elst->i_entry_count &&
2599 i_mvt >= p_track->i_elst_time +
2600 elst->i_segment_duration[p_track->i_elst] )
2602 MP4_TrackSetELST( p_demux, p_track,
2603 MP4_TrackGetDTS( p_demux, p_track ) );
2610 static void MP4_TrackSetELST( demux_t *p_demux, mp4_track_t *tk,
2613 demux_sys_t *p_sys = p_demux->p_sys;
2614 int i_elst_last = tk->i_elst;
2616 /* handle elst (find the correct one) */
2618 tk->i_elst_time = 0;
2619 if( tk->p_elst && tk->p_elst->data.p_elst->i_entry_count > 0 )
2621 MP4_Box_data_elst_t *elst = tk->p_elst->data.p_elst;
2622 int64_t i_mvt= i_time * p_sys->i_timescale / (int64_t)1000000;
2624 for( tk->i_elst = 0; (unsigned int)tk->i_elst < elst->i_entry_count; tk->i_elst++ )
2626 mtime_t i_dur = elst->i_segment_duration[tk->i_elst];
2628 if( tk->i_elst_time <= i_mvt && i_mvt < tk->i_elst_time + i_dur )
2632 tk->i_elst_time += i_dur;
2635 if( (unsigned int)tk->i_elst >= elst->i_entry_count )
2637 /* msg_Dbg( p_demux, "invalid number of entry in elst" ); */
2638 tk->i_elst = elst->i_entry_count - 1;
2639 tk->i_elst_time -= elst->i_segment_duration[tk->i_elst];
2642 if( elst->i_media_time[tk->i_elst] < 0 )
2645 tk->i_elst_time += elst->i_segment_duration[tk->i_elst];
2648 if( i_elst_last != tk->i_elst )
2650 msg_Warn( p_demux, "elst old=%d new=%d", i_elst_last, tk->i_elst );
2655 static const char *MP4_ConvertMacCode( uint16_t i_code )
2657 static const struct { const char *psz_iso639_1; uint16_t i_code; } p_cvt[] = {
2658 { "en", 0 }, { "fr", 1 }, { "de", 2 }, { "it", 3 }, { "nl", 4 },
2659 { "sv", 5 }, { "es", 6 }, { "da", 7 }, { "pt", 8 }, { "no", 9 },
2660 { "he", 10 }, { "ja", 11 }, { "ar", 12 }, { "fi", 13 }, { "el", 14 },
2661 { "is", 15 }, { "mt", 16 }, { "tr", 17 }, { "hr", 18 }, { "zh", 19 },
2662 { "ur", 20 }, { "hi", 21 }, { "th", 22 }, { "ko", 23 }, { "lt", 24 },
2663 { "pl", 25 }, { "hu", 26 }, { "et", 27 }, { "lv", 28 }, //{ "??", 29 },
2664 { "fo", 30 }, { "fa", 31 }, { "ru", 32 }, { "zh", 33 }, { "nl", 34 },
2665 { "ga", 35 }, { "sq", 36 }, { "ro", 37 }, { "cs", 38 }, { "sk", 39 },
2666 { "sl", 40 }, { "yi", 41 }, { "sr", 42 }, { "mk", 43 }, { "bg", 44 },
2667 { "uk", 45 }, { "be", 46 }, { "uz", 47 }, { "az", 48 }, { "kk", 48 },
2668 { "az", 50 }, { "hy", 51 }, { "ka", 52 }, { "mo", 53 }, { "ky", 54 },
2669 { "tg", 55 }, { "tk", 56 }, { "mn", 57 }, { "mn", 58 }, { "ps", 59 },
2670 { "ku", 60 }, { "ks", 61 }, { "sd", 62 }, { "bo", 63 }, { "ne", 64 },
2671 { "sa", 65 }, { "mr", 66 }, { "bn", 67 }, { "as", 68 }, { "gu", 69 },
2672 { "pa", 70 }, { "or", 71 }, { "ml", 72 }, { "kn", 73 }, { "ta", 74 },
2673 { "te", 75 }, { "si", 76 }, { "my", 77 }, { "km", 78 }, { "lo", 79 },
2674 { "vi", 80 }, { "id", 81 }, { "tl", 82 }, { "ms", 83 }, { "ms", 84 },
2675 { "am", 85 }, { "ti", 86 }, { "om", 87 }, { "so", 88 }, { "sw", 89 },
2676 { "rw", 90 }, { "rn", 91 }, { "ny", 92 }, { "mg", 93 }, { "eo", 94 },
2678 { "cy", 128 }, { "eu", 129 },
2679 { "ca", 130 }, { "la", 131 }, { "qu", 132 }, { "gn", 133 }, { "ay", 134 },
2680 { "tt", 135 }, { "ug", 136 }, { "dz", 137 }, { "jv", 138 }, { "su", 139 },
2681 { "gl", 140 }, { "af", 141 }, { "br", 142 }, { "iu", 143 }, { "gd", 144 },
2682 { "gv", 145 }, { "ga", 146 }, { "to", 147 }, { "el", 148 },
2687 for( i = 0; p_cvt[i].psz_iso639_1 != NULL; i++ )
2689 if( p_cvt[i].i_code == i_code )
2690 return p_cvt[i].psz_iso639_1;