1 /*****************************************************************************
2 * mp4.c : MP4 file input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: mp4.c,v 1.32 2003/05/22 21:42:44 gbazin Exp $
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
26 #include <stdlib.h> /* malloc(), free() */
27 #include <string.h> /* strdup() */
29 #include <sys/types.h>
32 #include <vlc/input.h>
33 #include <vlc_playlist.h>
38 /*****************************************************************************
40 *****************************************************************************/
41 static int MP4Init ( vlc_object_t * );
42 static void __MP4End ( vlc_object_t * );
43 static int MP4Demux ( input_thread_t * );
45 static int MP4DemuxRef( input_thread_t *p_input )
50 /* New input could have something like that... */
51 static int MP4Seek ( input_thread_t *, mtime_t );
53 #define MP4End(a) __MP4End(VLC_OBJECT(a))
55 /*****************************************************************************
57 *****************************************************************************/
59 set_description( _("MP4 demuxer") );
60 set_capability( "demux", 242 );
61 set_callbacks( MP4Init, __MP4End );
64 /*****************************************************************************
65 * Declaration of local function
66 *****************************************************************************/
68 static void MP4_TrackCreate ( input_thread_t *,
71 static void MP4_TrackDestroy( input_thread_t *,
74 static int MP4_TrackSelect ( input_thread_t *,
77 static void MP4_TrackUnselect(input_thread_t *,
80 static int MP4_TrackSeek ( input_thread_t *,
84 static uint64_t MP4_GetTrackPos( track_data_mp4_t * );
85 static int MP4_TrackSampleSize( track_data_mp4_t * );
86 static int MP4_TrackNextSample( input_thread_t *,
89 #define MP4_Set4BytesLE( p, dw ) \
90 *((uint8_t*)p) = ( (dw)&0xff ); \
91 *((uint8_t*)p+1) = ( ((dw)>> 8)&0xff ); \
92 *((uint8_t*)p+2) = ( ((dw)>>16)&0xff ); \
93 *((uint8_t*)p+3) = ( ((dw)>>24)&0xff )
95 #define MP4_Set2BytesLE( p, dw ) \
96 *((uint8_t*)p) = ( (dw)&0xff ); \
97 *((uint8_t*)p+1) = ( ((dw)>> 8)&0xff )
100 if( p ) { free( p ); (p) = NULL;}
102 /*****************************************************************************
103 * MP4Init: check file and initializes MP4 structures
104 *****************************************************************************/
105 static int MP4Init( vlc_object_t * p_this )
107 input_thread_t *p_input = (input_thread_t *)p_this;
110 demux_sys_t *p_demux;
123 if( !p_input->stream.b_seekable )
125 msg_Warn( p_input, "MP4 plugin discarded (unseekable)" );
126 return( VLC_EGENERIC );
129 /* Initialize access plug-in structures. */
130 if( p_input->i_mtu == 0 )
133 p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE ;
136 p_input->pf_demux = MP4Demux;
138 /* a little test to see if it could be a mp4 */
139 if( input_Peek( p_input, &p_peek, 8 ) < 8 )
141 msg_Warn( p_input, "MP4 plugin discarded (cannot peek)" );
142 return( VLC_EGENERIC );
146 switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
159 msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
160 return( VLC_EGENERIC );
163 /* create our structure that will contains all data */
164 if( !( p_input->p_demux_data =
165 p_demux = malloc( sizeof( demux_sys_t ) ) ) )
167 msg_Err( p_input, "out of memory" );
168 return( VLC_EGENERIC );
170 memset( p_demux, 0, sizeof( demux_sys_t ) );
171 p_input->p_demux_data = p_demux;
174 /* Now load all boxes ( except raw data ) */
175 if( !MP4_BoxGetRoot( p_input, &p_demux->box_root ) )
177 msg_Warn( p_input, "MP4 plugin discarded (not a valid file)" );
178 return( VLC_EGENERIC );
181 MP4_BoxDumpStructure( p_input, &p_demux->box_root );
183 if( ( p_ftyp = MP4_BoxGet( &p_demux->box_root, "/ftyp" ) ) )
185 switch( p_ftyp->data.p_ftyp->i_major_brand )
189 "ISO Media file (isom) version %d.",
190 p_ftyp->data.p_ftyp->i_minor_version );
194 "unrecognized major file specification (%4.4s).",
195 (char*)&p_ftyp->data.p_ftyp->i_major_brand );
201 msg_Dbg( p_input, "file type box missing (assuming ISO Media file)" );
204 /* the file need to have one moov box */
205 if( MP4_BoxCount( &p_demux->box_root, "/moov" ) <= 0 )
207 MP4_Box_t *p_foov = MP4_BoxGet( &p_demux->box_root, "/foov" );
211 msg_Err( p_input, "MP4 plugin discarded (no moov box)" );
213 return( VLC_EGENERIC );
215 /* we have a free box as a moov, rename it */
216 p_foov->i_type = FOURCC_moov;
219 if( ( p_rmra = MP4_BoxGet( &p_demux->box_root, "/moov/rmra" ) ) )
221 playlist_t *p_playlist;
222 int i_count = MP4_BoxCount( p_rmra, "rmda" );
225 msg_Dbg( p_input, "detected playlist mov file (%d ref)", i_count );
228 (playlist_t *)vlc_object_find( p_input,
233 //p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
234 for( i = 0; i < i_count; i++ )
236 MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
240 if( !p_rdrf || !( psz_ref = p_rdrf->data.p_rdrf->psz_ref ) )
244 i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
246 msg_Dbg( p_input, "new ref=`%s' type=%4.4s",
247 psz_ref, (char*)&i_ref_type );
249 if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
251 if( strstr( psz_ref, "qt5gateQT" ) )
253 msg_Dbg( p_input, "ignoring pseudo ref =`%s'", psz_ref );
256 if( !strncmp( psz_ref, "http://", 7 ) ||
257 !strncmp( psz_ref, "rtsp://", 7 ) )
259 msg_Dbg( p_input, "adding ref = `%s'", psz_ref );
260 playlist_Add( p_playlist, psz_ref, PLAYLIST_APPEND, PLAYLIST_END );
264 /* msg dbg relative ? */
265 char *psz_absolute = alloca( strlen( p_input->psz_source ) + strlen( psz_ref ) + 1);
266 char *end = strrchr( p_input->psz_source, '/' );
270 int i_len = end + 1 - p_input->psz_source;
272 strncpy( psz_absolute, p_input->psz_source, i_len);
273 psz_absolute[i_len] = '\0';
277 strcpy( psz_absolute, "" );
279 strcat( psz_absolute, psz_ref );
280 msg_Dbg( p_input, "adding ref = `%s'", psz_absolute );
281 playlist_Add( p_playlist, psz_absolute, PLAYLIST_APPEND, PLAYLIST_END );
286 msg_Err( p_input, "unknown ref type=%4.4s FIXME (send a bug report)", (char*)&p_rdrf->data.p_rdrf->i_ref_type );
289 vlc_object_release( p_playlist );
293 msg_Err( p_input, "can't find playlist" );
297 if( !(p_mvhd = MP4_BoxGet( &p_demux->box_root, "/moov/mvhd" ) ) )
301 msg_Err( p_input, "cannot find /moov/mvhd" );
307 msg_Warn( p_input, "cannot find /moov/mvhd (pure ref file)" );
308 p_input->pf_demux = MP4DemuxRef;
314 p_demux->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
315 p_demux->i_duration = p_mvhd->data.p_mvhd->i_duration;
318 if( !( p_demux->i_tracks =
319 MP4_BoxCount( &p_demux->box_root, "/moov/trak" ) ) )
321 msg_Err( p_input, "cannot find any /moov/trak" );
323 return( VLC_EGENERIC );
325 msg_Dbg( p_input, "find %d track%c",
327 p_demux->i_tracks ? 's':' ' );
329 /* create one program */
330 vlc_mutex_lock( &p_input->stream.stream_lock );
331 if( input_InitStream( p_input, 0 ) == -1)
333 vlc_mutex_unlock( &p_input->stream.stream_lock );
334 msg_Err( p_input, "cannot init stream" );
336 return( VLC_EGENERIC );
338 /* Needed to create program _before_ MP4_TrackCreate */
339 if( input_AddProgram( p_input, 0, 0) == NULL )
341 vlc_mutex_unlock( &p_input->stream.stream_lock );
342 msg_Err( p_input, "cannot add program" );
344 return( VLC_EGENERIC );
346 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
347 /* XXX beurk and beurk, see MP4Demux and MP4Seek */
348 if( p_demux->i_duration/p_demux->i_timescale > 0 )
350 p_input->stream.i_mux_rate =
351 p_input->stream.p_selected_area->i_size / 50 /
352 ( p_demux->i_duration / p_demux->i_timescale );
356 p_input->stream.i_mux_rate = 0;
358 vlc_mutex_unlock( &p_input->stream.stream_lock );
361 /* allocate memory */
362 p_demux->track = calloc( p_demux->i_tracks, sizeof( track_data_mp4_t ) );
364 /* now process each track and extract all usefull informations */
365 for( i = 0; i < p_demux->i_tracks; i++ )
367 p_trak = MP4_BoxGet( &p_demux->box_root, "/moov/trak[%d]", i );
368 MP4_TrackCreate( p_input, &p_demux->track[i], p_trak );
370 if( p_demux->track[i].b_ok )
373 switch( p_demux->track[i].i_cat )
386 msg_Dbg( p_input, "adding track[Id 0x%x] %s (%s) language %c%c%c",
387 p_demux->track[i].i_track_ID,
389 p_demux->track[i].b_enable ? "enable":"disable",
390 p_demux->track[i].i_language[0],
391 p_demux->track[i].i_language[1],
392 p_demux->track[i].i_language[2] );
396 msg_Dbg( p_input, "ignoring track[Id 0x%x]", p_demux->track[i].i_track_ID );
401 for( i = 0, b_audio = VLC_FALSE; i < p_demux->i_tracks; i++ )
403 #define track p_demux->track[i]
404 /* start decoder for this track if enable by default*/
405 if( track.b_ok && track.b_enable &&
406 ( track.i_cat != AUDIO_ES || !b_audio ) )
408 if( !MP4_TrackSelect( p_input, &track, 0 ) )
410 if(track.i_cat == AUDIO_ES )
419 vlc_mutex_lock( &p_input->stream.stream_lock );
420 p_input->stream.p_selected_program->b_is_ok = 1;
421 vlc_mutex_unlock( &p_input->stream.stream_lock );
423 return( VLC_SUCCESS );
426 /*****************************************************************************
427 * MP4Demux: read packet and send them to decoders
428 *****************************************************************************
429 * TODO check for newly selected track (ie audio upt to now )
430 *****************************************************************************/
431 static int MP4Demux( input_thread_t *p_input )
433 demux_sys_t *p_demux = p_input->p_demux_data;
434 unsigned int i_track;
437 unsigned int i_track_selected;
439 vlc_bool_t b_play_audio;
441 /* check for newly selected/unselected track */
442 for( i_track = 0, i_track_selected = 0, b_video = VLC_FALSE;
443 i_track < p_demux->i_tracks; i_track++ )
445 #define track p_demux->track[i_track]
446 if( track.b_selected && track.i_sample >= track.i_sample_count )
448 msg_Warn( p_input, "track[0x%x] will be disabled", track.i_track_ID );
449 MP4_TrackUnselect( p_input, &track );
451 else if( track.b_ok )
453 if( track.b_selected && track.p_es->p_decoder_fifo == NULL )
455 MP4_TrackUnselect( p_input, &track );
457 else if( !track.b_selected && track.p_es->p_decoder_fifo != NULL )
459 MP4_TrackSelect( p_input, &track, MP4_GetMoviePTS( p_demux ) );
462 if( track.b_selected )
466 if( track.i_cat == VIDEO_ES )
475 if( i_track_selected <= 0 )
477 msg_Warn( p_input, "no track selected, exiting..." );
482 /* XXX beurk, beuRK and BEURK,
483 but only way I've found to detect seek from interface */
484 if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
488 /* first wait for empty buffer, arbitrary time FIXME */
489 msleep( DEFAULT_PTS_DELAY );
490 /* *** calculate new date *** */
492 i_date = (mtime_t)1000000 *
493 (mtime_t)p_demux->i_duration /
494 (mtime_t)p_demux->i_timescale *
495 (mtime_t)MP4_TellAbsolute( p_input ) /
496 (mtime_t)p_input->stream.p_selected_area->i_size;
497 MP4Seek( p_input, i_date );
500 /* first wait for the good time to read a packet */
501 input_ClockManageRef( p_input,
502 p_input->stream.p_selected_program,
506 /* update pcr XXX in mpeg scale so in 90000 unit/s */
507 p_demux->i_pcr = MP4_GetMoviePTS( p_demux ) * 9 / 100;
510 /* we will read 100ms for each stream so ...*/
511 p_demux->i_time += __MAX( p_demux->i_timescale / 10 , 1 );
514 /* Check if we need to send the audio data to decoder */
515 b_play_audio = !p_input->stream.control.b_mute;
517 for( i_track = 0; i_track < p_demux->i_tracks; i_track++ )
519 #define track p_demux->track[i_track]
522 MP4_GetTrackPTS( &track ) >= MP4_GetMoviePTS( p_demux ) )
526 while( MP4_GetTrackPTS( &track ) < MP4_GetMoviePTS( p_demux ) )
529 if( !b_play_audio && track.i_cat == AUDIO_ES )
531 if( MP4_TrackNextSample( p_input, &track ) )
541 data_packet_t *p_data;
544 /* caculate size and position for this sample */
545 i_size = MP4_TrackSampleSize( &track );
547 i_pos = MP4_GetTrackPos( &track );
549 //msg_Dbg( p_input, "stream %d size=%6d pos=%8lld", i_track, i_size, i_pos );
552 if( MP4_SeekAbsolute( p_input, i_pos ) )
554 msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
555 MP4_TrackUnselect( p_input, &track );
560 /* now create a pes */
561 if( !(p_pes = input_NewPES( p_input->p_method_data ) ) )
565 /* and a data packet for the data */
566 if( !(p_data = input_NewPacket( p_input->p_method_data, i_size ) ) )
568 input_DeletePES( p_input->p_method_data, p_pes );
571 p_data->p_payload_end = p_data->p_payload_start + i_size;
573 /* initialisation of all the field */
574 p_pes->i_dts = p_pes->i_pts = 0;
575 p_pes->p_first = p_pes->p_last = p_data;
576 p_pes->i_nb_data = 1;
577 p_pes->i_pes_size = i_size;
580 if( MP4_ReadData( p_input, p_data->p_payload_start, i_size ) )
582 input_DeletePES( p_input->p_method_data, p_pes );
584 msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
585 MP4_TrackUnselect( p_input, &track );
591 p_pes->i_pts = input_ClockGetTS( p_input,
592 p_input->stream.p_selected_program,
593 MP4_GetTrackPTS( &track ) * 9/100);
595 if( track.p_es->p_decoder_fifo )
598 p_pes->i_rate = p_input->stream.control.i_rate;
599 input_DecodePES( track.p_es->p_decoder_fifo, p_pes );
603 input_DeletePES( p_input->p_method_data, p_pes );
606 if( MP4_TrackNextSample( p_input, &track ) )
617 /*****************************************************************************
618 * MP4Seek: Got to i_date
619 ******************************************************************************/
620 static int MP4Seek ( input_thread_t *p_input, mtime_t i_date )
622 demux_sys_t *p_demux = p_input->p_demux_data;
623 unsigned int i_track;
624 /* First update update global time */
625 p_demux->i_time = i_date * p_demux->i_timescale / 1000000;
626 p_demux->i_pcr = i_date* 9 / 100;
628 /* Now for each stream try to go to this time */
629 for( i_track = 0; i_track < p_demux->i_tracks; i_track++ )
631 #define track p_demux->track[i_track]
632 if( track.b_ok && track.b_selected )
634 MP4_TrackSeek( p_input, &track, i_date );
641 /*****************************************************************************
642 * MP4End: frees unused data
643 *****************************************************************************/
644 static void __MP4End ( vlc_object_t * p_this )
646 unsigned int i_track;
647 input_thread_t * p_input = (input_thread_t *)p_this;
648 demux_sys_t *p_demux = p_input->p_demux_data;
650 msg_Dbg( p_input, "freeing all memory" );
651 MP4_BoxFree( p_input, &p_demux->box_root );
652 for( i_track = 0; i_track < p_demux->i_tracks; i_track++ )
654 MP4_TrackDestroy( p_input, &p_demux->track[i_track] );
656 FREE( p_demux->track );
658 FREE( p_input->p_demux_data );
662 /****************************************************************************
663 * Local functions, specific to vlc
664 ****************************************************************************/
666 /* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
667 static int TrackCreateChunksIndex( input_thread_t *p_input,
668 track_data_mp4_t *p_demux_track )
670 MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
673 unsigned int i_chunk;
674 unsigned int i_index, i_last;
676 if( ( !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "stco" ) )&&
677 !(p_co64 = MP4_BoxGet( p_demux_track->p_stbl, "co64" ) ) )||
678 ( !(p_stsc = MP4_BoxGet( p_demux_track->p_stbl, "stsc" ) ) ))
680 return( VLC_EGENERIC );
683 p_demux_track->i_chunk_count = p_co64->data.p_co64->i_entry_count;
684 if( !p_demux_track->i_chunk_count )
686 msg_Warn( p_input, "no chunk defined" );
687 return( VLC_EGENERIC );
689 p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
690 sizeof( chunk_data_mp4_t ) );
692 /* first we read chunk offset */
693 for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
695 p_demux_track->chunk[i_chunk].i_offset =
696 p_co64->data.p_co64->i_chunk_offset[i_chunk];
699 /* now we read index for SampleEntry( soun vide mp4a mp4v ...)
700 to be used for the sample XXX begin to 1
701 We construct it begining at the end */
702 i_last = p_demux_track->i_chunk_count; /* last chunk proceded */
703 i_index = p_stsc->data.p_stsc->i_entry_count;
706 msg_Warn( p_input, "cannot read chunk table or table empty" );
707 return( VLC_EGENERIC );
713 for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
714 i_chunk < i_last; i_chunk++ )
716 p_demux_track->chunk[i_chunk].i_sample_description_index =
717 p_stsc->data.p_stsc->i_sample_description_index[i_index];
718 p_demux_track->chunk[i_chunk].i_sample_count =
719 p_stsc->data.p_stsc->i_samples_per_chunk[i_index];
721 i_last = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
724 p_demux_track->chunk[0].i_sample_first = 0;
725 for( i_chunk = 1; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
727 p_demux_track->chunk[i_chunk].i_sample_first =
728 p_demux_track->chunk[i_chunk-1].i_sample_first +
729 p_demux_track->chunk[i_chunk-1].i_sample_count;
733 "track[Id 0x%x] read %d chunk",
734 p_demux_track->i_track_ID,
735 p_demux_track->i_chunk_count );
737 return( VLC_SUCCESS );
739 static int TrackCreateSamplesIndex( input_thread_t *p_input,
740 track_data_mp4_t *p_demux_track )
742 MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
743 ctts make same mapping but for composition time,
744 not yet used and probably not usefull */
745 MP4_Box_t *p_stsz; /* gives sample size of each samples, there is also stz2
746 that uses a compressed form FIXME make them in libmp4
748 /* TODO use also stss and stsh table for seeking */
749 /* FIXME use edit table */
754 int64_t i_index_sample_used;
758 p_stts = MP4_BoxGet( p_demux_track->p_stbl, "stts" );
759 p_stsz = MP4_BoxGet( p_demux_track->p_stbl, "stsz" ); /* FIXME and stz2 */
761 if( ( !p_stts )||( !p_stsz ) )
763 msg_Warn( p_input, "cannot read sample table" );
764 return( VLC_EGENERIC );
767 p_demux_track->i_sample_count = p_stsz->data.p_stsz->i_sample_count;
770 /* for sample size, there are 2 case */
771 if( p_stsz->data.p_stsz->i_sample_size )
773 /* 1: all sample have the same size, so no need to construct a table */
774 p_demux_track->i_sample_size = p_stsz->data.p_stsz->i_sample_size;
775 p_demux_track->p_sample_size = NULL;
779 /* 2: each sample can have a different size */
780 p_demux_track->i_sample_size = 0;
781 p_demux_track->p_sample_size =
782 calloc( p_demux_track->i_sample_count, sizeof( uint32_t ) );
784 for( i_sample = 0; i_sample < p_demux_track->i_sample_count; i_sample++ )
786 p_demux_track->p_sample_size[i_sample] =
787 p_stsz->data.p_stsz->i_entry_size[i_sample];
790 /* we have extract all information from stsz,
793 /* if we don't want to waste too much memory, we can't expand
794 the box !, so each chunk will contain an "extract" of this table
798 i_index = 0; i_index_sample_used =0;
800 /* create and init last data for each chunk */
801 for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
804 int64_t i_entry, i_sample_count, i;
806 p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
807 /* count how many entries needed for this chunk
808 for p_sample_delta_dts and p_sample_count_dts */
810 i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
813 while( i_sample_count > 0 )
815 i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
818 i_sample_count += i_index_sample_used; /* don't count already used sample
825 p_demux_track->chunk[i_chunk].p_sample_count_dts =
826 calloc( i_entry, sizeof( uint32_t ) );
827 p_demux_track->chunk[i_chunk].p_sample_delta_dts =
828 calloc( i_entry, sizeof( uint32_t ) );
831 i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
832 for( i = 0; i < i_entry; i++ )
837 i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
839 i_used = __MIN( i_rest, i_sample_count );
841 i_index_sample_used += i_used;
842 i_sample_count -= i_used;
844 p_demux_track->chunk[i_chunk].p_sample_count_dts[i] = i_used;
846 p_demux_track->chunk[i_chunk].p_sample_delta_dts[i] =
847 p_stts->data.p_stts->i_sample_delta[i_index];
849 i_last_dts += i_used *
850 p_demux_track->chunk[i_chunk].p_sample_delta_dts[i];
852 if( i_index_sample_used >=
853 p_stts->data.p_stts->i_sample_count[i_index] )
857 i_index_sample_used = 0;
864 "track[Id 0x%x] read %d samples length:"I64Fd"s",
865 p_demux_track->i_track_ID,
866 p_demux_track->i_sample_count,
867 i_last_dts / p_demux_track->i_timescale );
869 return( VLC_SUCCESS );
874 * Create ES and PES to init decoder if needed, for a track starting at i_chunk
876 static int TrackCreateES ( input_thread_t *p_input,
877 track_data_mp4_t *p_track,
878 unsigned int i_chunk,
879 es_descriptor_t **pp_es,
880 pes_packet_t **pp_pes )
882 MP4_Box_t * p_sample;
886 unsigned int i_decoder_specific_info_len;
887 uint8_t * p_decoder_specific_info;
889 es_descriptor_t *p_es;
890 pes_packet_t *p_pes_init;
893 BITMAPINFOHEADER *p_bih;
898 if( !p_track->chunk[i_chunk].i_sample_description_index )
901 "invalid SampleEntry index (track[Id 0x%x])",
902 p_track->i_track_ID );
903 return( VLC_EGENERIC );
906 p_sample = MP4_BoxGet( p_track->p_stsd,
908 p_track->chunk[i_chunk].i_sample_description_index - 1 );
910 if( !p_sample || !p_sample->data.p_data )
913 "cannot find SampleEntry (track[Id 0x%x])",
914 p_track->i_track_ID );
915 return( VLC_EGENERIC );
918 p_track->p_sample = p_sample;
920 if( p_track->i_sample_size == 1 )
922 MP4_Box_data_sample_soun_t *p_soun;
924 p_soun = p_sample->data.p_sample_soun;
926 if( p_soun->i_qt_version == 0 )
928 switch( p_sample->i_type )
930 case VLC_FOURCC( 'i', 'm', 'a', '4' ):
931 p_soun->i_qt_version = 1;
932 p_soun->i_sample_per_packet = 64;
933 p_soun->i_bytes_per_packet = 34;
934 p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
935 p_soun->i_bytes_per_sample = 2;
937 case VLC_FOURCC( 'M', 'A', 'C', '3' ):
938 p_soun->i_qt_version = 1;
939 p_soun->i_sample_per_packet = 6;
940 p_soun->i_bytes_per_packet = 2;
941 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
942 p_soun->i_bytes_per_sample = 2;
944 case VLC_FOURCC( 'M', 'A', 'C', '6' ):
945 p_soun->i_qt_version = 1;
946 p_soun->i_sample_per_packet = 12;
947 p_soun->i_bytes_per_packet = 2;
948 p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
949 p_soun->i_bytes_per_sample = 2;
957 /* Initialise ES, first language as description */
958 for( i = 0; i < 3; i++ )
960 psz_lang[i] = p_track->i_language[i];
964 vlc_mutex_lock( &p_input->stream.stream_lock );
965 p_es = input_AddES( p_input, p_input->stream.p_selected_program,
966 p_track->i_track_ID, p_track->i_cat, psz_lang, 0 );
967 vlc_mutex_unlock( &p_input->stream.stream_lock );
969 p_es->i_stream_id = p_track->i_track_ID;
971 /* It's a little ugly but .. there are special cases */
972 switch( p_sample->i_type )
974 case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
975 case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
976 p_es->i_fourcc = VLC_FOURCC( 'm', 'p', 'g', 'a' );
978 case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
979 p_es->i_fourcc = VLC_FOURCC( 'a', 'r', 'a', 'w' );
981 case( VLC_FOURCC( 's', '2', '6', '3' ) ):
982 p_es->i_fourcc = VLC_FOURCC( 'h', '2', '6', '3' );
985 p_es->i_fourcc = p_sample->i_type;
989 i_decoder_specific_info_len = 0;
990 p_decoder_specific_info = NULL;
993 /* now see if esds is present and if so create a data packet
994 with decoder_specific_info */
995 #define p_decconfig p_esds->data.p_esds->es_descriptor.p_decConfigDescr
996 if( ( p_esds = MP4_BoxGet( p_sample, "esds" ) )&&
997 ( p_esds->data.p_esds )&&
1000 /* First update information based on i_objectTypeIndication */
1001 switch( p_decconfig->i_objectTypeIndication )
1003 case( 0x20 ): /* MPEG4 VIDEO */
1004 p_es->i_fourcc = VLC_FOURCC( 'm','p','4','v' );
1007 p_es->i_fourcc = VLC_FOURCC( 'm','p','4','a' );
1014 case( 0x65): /* MPEG2 video */
1015 p_es->i_fourcc = VLC_FOURCC( 'm','p','g','v' );
1017 /* Theses are MPEG2-AAC */
1018 case( 0x66): /* main profile */
1019 case( 0x67): /* Low complexity profile */
1020 case( 0x68): /* Scaleable Sampling rate profile */
1021 p_es->i_fourcc = VLC_FOURCC( 'm','p','4','a' );
1023 /* true MPEG 2 audio */
1025 p_es->i_fourcc = VLC_FOURCC( 'm','p','g','a' );
1027 case( 0x6a): /* MPEG1 video */
1028 p_es->i_fourcc = VLC_FOURCC( 'm','p','g','v' );
1030 case( 0x6b): /* MPEG1 audio */
1031 p_es->i_fourcc = VLC_FOURCC( 'm','p','g','a' );
1033 case( 0x6c ): /* jpeg */
1034 p_es->i_fourcc = VLC_FOURCC( 'j','p','e','g' );
1037 /* Unknown entry, but don't touch i_fourcc */
1039 "unknown objectTypeIndication(0x%x) (Track[ID 0x%x])",
1040 p_decconfig->i_objectTypeIndication,
1041 p_track->i_track_ID );
1044 i_decoder_specific_info_len =
1045 p_decconfig->i_decoder_specific_info_len;
1046 p_decoder_specific_info =
1047 p_decconfig->p_decoder_specific_info;
1051 switch( p_sample->i_type )
1053 /* qt decoder, send the complete chunk */
1054 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1055 case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
1056 i_decoder_specific_info_len = p_sample->data.p_sample_vide->i_qt_image_description;
1057 p_decoder_specific_info = p_sample->data.p_sample_vide->p_qt_image_description;
1059 case VLC_FOURCC( 'Q', 'D', 'M', 'C' ):
1060 case VLC_FOURCC( 'Q', 'D', 'M', '2' ):
1061 case VLC_FOURCC( 'Q', 'c', 'l', 'p' ):
1062 i_decoder_specific_info_len = p_sample->data.p_sample_soun->i_qt_description;
1063 p_decoder_specific_info = p_sample->data.p_sample_soun->p_qt_description;
1072 /* some last initialisation */
1073 /* XXX I create a bitmapinfoheader_t or
1074 waveformatex_t for each stream, up to now it's the best thing
1075 I've found but it could exist a better solution :) as something
1076 like adding some new fields in p_es ...
1078 XXX I don't set all values, only thoses that are interesting or known
1079 --> bitmapinfoheader_t : width and height
1080 --> waveformatex_t : channels, samplerate, bitspersample
1081 and at the end I add p_decoder_specific_info
1083 TODO set more values
1087 switch( p_track->i_cat )
1090 /* now create a bitmapinfoheader_t for decoder and
1091 add information found in p_esds */
1092 /* XXX XXX + 16 are for avoid segfault when ffmpeg access beyong the data */
1093 p_init = malloc( sizeof( BITMAPINFOHEADER ) + i_decoder_specific_info_len + 16 );
1094 p_bih = (BITMAPINFOHEADER*)p_init;
1096 p_bih->biSize = sizeof( BITMAPINFOHEADER ) + i_decoder_specific_info_len;
1097 p_bih->biWidth = p_sample->data.p_sample_vide->i_width;
1098 p_bih->biHeight = p_sample->data.p_sample_vide->i_height;
1099 p_bih->biPlanes = 1; // FIXME
1100 p_bih->biBitCount = 0; // FIXME
1101 p_bih->biCompression = 0; // FIXME
1102 p_bih->biSizeImage = 0; // FIXME
1103 p_bih->biXPelsPerMeter = 0; // FIXME
1104 p_bih->biYPelsPerMeter = 0; // FIXME
1105 p_bih->biClrUsed = 0; // FIXME
1106 p_bih->biClrImportant = 0; // FIXME
1108 if( p_bih->biWidth == 0 )
1110 // fall on display size
1111 p_bih->biWidth = p_track->i_width;
1113 if( p_bih->biHeight == 0 )
1115 // fall on display size
1116 p_bih->biHeight = p_track->i_height;
1119 if( i_decoder_specific_info_len )
1121 data_packet_t *p_data;
1123 memcpy( p_init + sizeof( BITMAPINFOHEADER ),
1124 p_decoder_specific_info,
1125 i_decoder_specific_info_len);
1127 /* If stream is mpeg4 video we send specific_info,
1128 as it's needed to decode it (vol) */
1129 switch( p_es->i_fourcc )
1131 case VLC_FOURCC( 'm','p','4','v' ):
1132 case VLC_FOURCC( 'D','I','V','X' ):
1133 case VLC_FOURCC( 'd','i','v','x' ):
1134 p_pes_init = input_NewPES( p_input->p_method_data );
1135 p_data = input_NewPacket( p_input->p_method_data,
1136 i_decoder_specific_info_len);
1137 p_data->p_payload_end = p_data->p_payload_start + i_decoder_specific_info_len;
1139 memcpy( p_data->p_payload_start,
1140 p_decoder_specific_info,
1141 i_decoder_specific_info_len );
1142 p_pes_init->i_dts = p_pes_init->i_pts = 0;
1143 p_pes_init->p_first = p_pes_init->p_last = p_data;
1144 p_pes_init->i_nb_data = 1;
1145 p_pes_init->i_pes_size = i_decoder_specific_info_len;
1155 p_init = malloc( sizeof( WAVEFORMATEX ) + i_decoder_specific_info_len + 16 );
1156 p_wf = (WAVEFORMATEX*)p_init;
1158 p_wf->wFormatTag = 1;
1159 p_wf->nChannels = p_sample->data.p_sample_soun->i_channelcount;
1160 p_wf->nSamplesPerSec = p_sample->data.p_sample_soun->i_sampleratehi;
1161 p_wf->nAvgBytesPerSec = p_sample->data.p_sample_soun->i_channelcount *
1162 p_sample->data.p_sample_soun->i_sampleratehi *
1163 p_sample->data.p_sample_soun->i_samplesize / 8;
1164 p_wf->nBlockAlign = 0;
1165 p_wf->wBitsPerSample = p_sample->data.p_sample_soun->i_samplesize;
1166 p_wf->cbSize = i_decoder_specific_info_len;
1168 if( i_decoder_specific_info_len )
1170 memcpy( p_init + sizeof( WAVEFORMATEX ),
1171 p_decoder_specific_info,
1172 i_decoder_specific_info_len);
1181 if( p_es->i_cat == AUDIO_ES )
1183 p_es->p_bitmapinfoheader = NULL;
1184 p_es->p_waveformatex = (void*)p_init;
1186 else if( p_es->i_cat == VIDEO_ES )
1188 p_es->p_bitmapinfoheader = (void*)p_init;
1189 p_es->p_waveformatex = NULL;
1193 *pp_pes = p_pes_init;
1194 return( VLC_SUCCESS );
1197 /* given a time it return sample/chunk */
1198 static int TrackTimeToSampleChunk( input_thread_t *p_input,
1199 track_data_mp4_t *p_track,
1202 uint32_t *pi_sample )
1206 unsigned int i_sample;
1207 unsigned int i_chunk;
1210 /* convert absolute time to in timescale unit */
1211 i_start = i_start * (mtime_t)p_track->i_timescale / (mtime_t)1000000;
1213 /* FIXME see if it's needed to check p_track->i_chunk_count */
1214 if( !p_track->b_ok || p_track->i_chunk_count == 0 )
1216 return( VLC_EGENERIC );
1219 /* we start from sample 0/chunk 0, hope it won't take too much time */
1220 /* *** find good chunk *** */
1221 for( i_chunk = 0; ; i_chunk++ )
1223 if( i_chunk + 1 >= p_track->i_chunk_count )
1225 /* at the end and can't check if i_start in this chunk,
1226 it will be check while searching i_sample */
1227 i_chunk = p_track->i_chunk_count - 1;
1231 if( i_start >= p_track->chunk[i_chunk].i_first_dts &&
1232 i_start < p_track->chunk[i_chunk + 1].i_first_dts )
1238 /* *** find sample in the chunk *** */
1239 i_sample = p_track->chunk[i_chunk].i_sample_first;
1240 i_dts = p_track->chunk[i_chunk].i_first_dts;
1241 for( i_index = 0; i_sample < p_track->chunk[i_chunk].i_sample_count; )
1244 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1245 p_track->chunk[i_chunk].p_sample_delta_dts[i_index] < i_start )
1248 p_track->chunk[i_chunk].p_sample_count_dts[i_index] *
1249 p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1251 i_sample += p_track->chunk[i_chunk].p_sample_count_dts[i_index];
1256 if( p_track->chunk[i_chunk].p_sample_delta_dts[i_index] <= 0 )
1260 i_sample += ( i_start - i_dts ) / p_track->chunk[i_chunk].p_sample_delta_dts[i_index];
1265 if( i_sample >= p_track->i_sample_count )
1268 "track[Id 0x%x] will be disabled (seeking too far) chunk=%d sample=%d",
1269 p_track->i_track_ID, i_chunk, i_sample );
1270 return( VLC_EGENERIC );
1274 /* *** Try to find nearest sync points *** */
1275 if( ( p_stss = MP4_BoxGet( p_track->p_stbl, "stss" ) ) )
1277 unsigned int i_index;
1279 "track[Id 0x%x] using Sync Sample Box (stss)",
1280 p_track->i_track_ID );
1281 for( i_index = 0; i_index < p_stss->data.p_stss->i_entry_count; i_index++ )
1283 if( p_stss->data.p_stss->i_sample_number[i_index] >= i_sample )
1287 msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1289 p_stss->data.p_stss->i_sample_number[i_index-1] );
1290 i_sample = p_stss->data.p_stss->i_sample_number[i_index-1];
1291 /* new i_sample is less than old so i_chunk can only decreased */
1292 while( i_chunk > 0 &&
1293 i_sample < p_track->chunk[i_chunk].i_sample_first )
1300 msg_Dbg( p_input, "stts gives %d --> %d (sample number)",
1302 p_stss->data.p_stss->i_sample_number[i_index] );
1303 i_sample = p_stss->data.p_stss->i_sample_number[i_index];
1304 /* new i_sample is more than old so i_chunk can only increased */
1305 while( i_chunk < p_track->i_chunk_count - 1 &&
1306 i_sample >= p_track->chunk[i_chunk].i_sample_first +
1307 p_track->chunk[i_chunk].i_sample_count )
1319 "track[Id 0x%x] does not provide Sync Sample Box (stss)",
1320 p_track->i_track_ID );
1323 if( pi_chunk ) *pi_chunk = i_chunk;
1324 if( pi_sample ) *pi_sample = i_sample;
1325 return( VLC_SUCCESS );
1328 static int TrackGotoChunkSample( input_thread_t *p_input,
1329 track_data_mp4_t *p_track,
1330 unsigned int i_chunk,
1331 unsigned int i_sample )
1333 /* now see if actual es is ok */
1334 if( p_track->i_chunk < 0 ||
1335 p_track->i_chunk >= p_track->i_chunk_count ||
1336 p_track->chunk[p_track->i_chunk].i_sample_description_index !=
1337 p_track->chunk[i_chunk].i_sample_description_index )
1339 msg_Warn( p_input, "Recreate ES" );
1341 /* no :( recreate es */
1342 vlc_mutex_lock( &p_input->stream.stream_lock );
1343 input_DelES( p_input, p_track->p_es );
1344 vlc_mutex_unlock( &p_input->stream.stream_lock );
1346 if( p_track->p_pes_init )
1348 input_DeletePES( p_input->p_method_data, p_track->p_pes_init );
1351 if( TrackCreateES( p_input,
1354 &p_track->p_pes_init ) )
1356 msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1357 p_track->i_track_ID );
1359 p_track->b_ok = VLC_FALSE;
1360 p_track->b_selected = VLC_FALSE;
1361 return( VLC_EGENERIC );
1365 /* select again the new decoder */
1366 if( p_track->b_selected && p_track->p_es && p_track->p_es->p_decoder_fifo == NULL )
1368 vlc_mutex_lock( &p_input->stream.stream_lock );
1369 input_SelectES( p_input, p_track->p_es );
1370 vlc_mutex_unlock( &p_input->stream.stream_lock );
1372 if( p_track->p_es->p_decoder_fifo )
1374 if( p_track->p_pes_init != NULL )
1376 p_track->p_pes_init->i_rate = p_input->stream.control.i_rate;
1378 input_DecodePES( p_track->p_es->p_decoder_fifo,
1379 p_track->p_pes_init );
1380 p_track->p_pes_init = NULL;
1382 p_track->b_selected = VLC_TRUE;
1386 msg_Dbg( p_input, "Argg cannot select this stream" );
1387 if( p_track->p_pes_init != NULL )
1389 input_DeletePES( p_input->p_method_data, p_track->p_pes_init );
1390 p_track->p_pes_init = NULL;
1392 p_track->b_selected = VLC_FALSE;
1396 p_track->i_chunk = i_chunk;
1397 p_track->i_sample = i_sample;
1399 return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1402 /****************************************************************************
1404 ****************************************************************************
1405 * Parse track information and create all needed data to run a track
1406 * If it succeed b_ok is set to 1 else to 0
1407 ****************************************************************************/
1408 static void MP4_TrackCreate( input_thread_t *p_input,
1409 track_data_mp4_t *p_track,
1410 MP4_Box_t * p_box_trak )
1414 MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
1415 MP4_Box_t *p_tref = MP4_BoxGet( p_box_trak, "tref" );
1424 /* hint track unsuported */
1426 /* set default value (-> track unusable) */
1427 p_track->b_ok = VLC_FALSE;
1428 p_track->b_enable = VLC_FALSE;
1429 p_track->b_selected = VLC_FALSE;
1431 p_track->i_cat = UNKNOWN_ES;
1438 /* do we launch this track by default ? */
1440 ( ( p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED ) != 0 );
1442 p_track->i_track_ID = p_tkhd->data.p_tkhd->i_track_ID;
1443 p_track->i_width = p_tkhd->data.p_tkhd->i_width / 65536;
1444 p_track->i_height = p_tkhd->data.p_tkhd->i_height / 65536;
1446 if( ( p_elst = MP4_BoxGet( p_box_trak, "edts/elst" ) ) )
1448 /* msg_Warn( p_input, "unhandled box: edts --> FIXME" ); */
1453 /* msg_Warn( p_input, "unhandled box: tref --> FIXME" ); */
1456 p_mdhd = MP4_BoxGet( p_box_trak, "mdia/mdhd" );
1457 p_hdlr = MP4_BoxGet( p_box_trak, "mdia/hdlr" );
1459 if( ( !p_mdhd )||( !p_hdlr ) )
1464 p_track->i_timescale = p_mdhd->data.p_mdhd->i_timescale;
1466 for( i = 0; i < 3; i++ )
1468 p_track->i_language[i] = p_mdhd->data.p_mdhd->i_language[i];
1470 p_mdhd->data.p_mdhd->i_language[3] = 0;
1472 switch( p_hdlr->data.p_hdlr->i_handler_type )
1474 case( FOURCC_soun ):
1475 if( !( p_smhd = MP4_BoxGet( p_box_trak, "mdia/minf/smhd" ) ) )
1479 p_track->i_cat = AUDIO_ES;
1482 case( FOURCC_vide ):
1483 if( !( p_vmhd = MP4_BoxGet( p_box_trak, "mdia/minf/vmhd" ) ) )
1487 p_track->i_cat = VIDEO_ES;
1495 p_dinf = MP4_BoxGet( p_minf, "dinf" );
1497 if( !( p_track->p_stbl = MP4_BoxGet( p_box_trak,"mdia/minf/stbl" ) ) )
1502 if( !( p_track->p_stsd = MP4_BoxGet( p_box_trak,"mdia/minf/stbl/stsd") ) )
1507 /* fxi i_timescale for AUDIO_ES with i_qt_version == 0 */
1508 if( p_track->i_cat == AUDIO_ES ) //&& p_track->i_sample_size == 1 )
1510 MP4_Box_t *p_sample;
1512 p_sample = MP4_BoxGet( p_track->p_stsd, "[0]" );
1513 if( p_sample && p_sample->data.p_sample_soun)
1515 MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
1516 if( p_soun->i_qt_version == 0 && p_track->i_timescale != p_soun->i_sampleratehi )
1518 msg_Warn( p_input, "i_timescale != i_sampleratehi with qt_version == 0\nMaking both equal ? (report any problem)" );
1519 p_track->i_timescale = p_soun->i_sampleratehi;
1525 /* Create chunk index table */
1526 if( TrackCreateChunksIndex( p_input,p_track ) )
1528 return; /* cannot create chunks index */
1531 /* create sample index table needed for reading and seeking */
1532 if( TrackCreateSamplesIndex( p_input, p_track ) )
1534 return; /* cannot create samples index */
1537 p_track->i_chunk = 0;
1538 p_track->i_sample = 0;
1539 /* now create es but does not select it */
1540 /* XXX needed else vlc won't know this track exist */
1541 if( TrackCreateES( p_input,
1542 p_track, p_track->i_chunk,
1544 &p_track->p_pes_init ) )
1546 msg_Err( p_input, "cannot create es for track[Id 0x%x]",
1547 p_track->i_track_ID );
1554 for( i = 0; i < p_track->i_chunk_count; i++ )
1556 fprintf( stderr, "%-5d sample_count=%d pts=%lld\n", i, p_track->chunk[i].i_sample_count, p_track->chunk[i].i_first_dts );
1561 p_track->b_ok = VLC_TRUE;
1564 /****************************************************************************
1566 ****************************************************************************
1567 * Destroy a track created by MP4_TrackCreate.
1568 ****************************************************************************/
1569 static void MP4_TrackDestroy( input_thread_t *p_input,
1570 track_data_mp4_t *p_track )
1572 unsigned int i_chunk;
1574 p_track->b_ok = VLC_FALSE;
1575 p_track->b_enable = VLC_FALSE;
1576 p_track->b_selected = VLC_FALSE;
1578 p_track->i_cat = UNKNOWN_ES;
1580 if( p_track->p_pes_init )
1582 input_DeletePES( p_input->p_method_data, p_track->p_pes_init );
1585 for( i_chunk = 0; i_chunk < p_track->i_chunk_count; i_chunk++ )
1587 if( p_track->chunk )
1589 FREE(p_track->chunk[i_chunk].p_sample_count_dts);
1590 FREE(p_track->chunk[i_chunk].p_sample_delta_dts );
1593 FREE( p_track->chunk );
1595 if( !p_track->i_sample_size )
1597 FREE( p_track->p_sample_size );
1601 static int MP4_TrackSelect ( input_thread_t *p_input,
1602 track_data_mp4_t *p_track,
1608 if( !p_track->b_ok )
1610 return( VLC_EGENERIC );
1613 if( p_track->b_selected )
1616 "track[Id 0x%x] already selected",
1617 p_track->i_track_ID );
1618 return( VLC_SUCCESS );
1621 if( TrackTimeToSampleChunk( p_input,
1623 &i_chunk, &i_sample ) )
1626 "cannot select track[Id 0x%x]",
1627 p_track->i_track_ID );
1628 return( VLC_EGENERIC );
1631 p_track->b_selected = VLC_TRUE;
1633 if( TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample ) )
1635 p_track->b_selected = VLC_FALSE;
1638 return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1641 static void MP4_TrackUnselect(input_thread_t *p_input,
1642 track_data_mp4_t *p_track )
1644 if( !p_track->b_ok )
1649 if( !p_track->b_selected )
1652 "track[Id 0x%x] already unselected",
1653 p_track->i_track_ID );
1657 if( p_track->p_es->p_decoder_fifo )
1659 vlc_mutex_lock( &p_input->stream.stream_lock );
1660 input_UnselectES( p_input, p_track->p_es );
1661 vlc_mutex_unlock( &p_input->stream.stream_lock );
1664 p_track->b_selected = VLC_FALSE;
1667 static int MP4_TrackSeek ( input_thread_t *p_input,
1668 track_data_mp4_t *p_track,
1674 if( !p_track->b_ok )
1676 return( VLC_EGENERIC );
1679 if( TrackTimeToSampleChunk( p_input,
1681 &i_chunk, &i_sample ) )
1684 "cannot select track[Id 0x%x]",
1685 p_track->i_track_ID );
1686 return( VLC_EGENERIC );
1689 p_track->b_selected = VLC_TRUE;
1691 TrackGotoChunkSample( p_input, p_track, i_chunk, i_sample );
1693 return( p_track->b_selected ? VLC_SUCCESS : VLC_EGENERIC );
1701 * 3 types: for audio
1704 #define QT_V0_MAX_SAMPLES 1500
1705 static int MP4_TrackSampleSize( track_data_mp4_t *p_track )
1708 MP4_Box_data_sample_soun_t *p_soun;
1710 if( p_track->i_sample_size == 0 )
1712 /* most simple case */
1713 return( p_track->p_sample_size[p_track->i_sample] );
1715 if( p_track->i_cat != AUDIO_ES )
1717 return( p_track->i_sample_size );
1720 if( p_track->i_sample_size != 1 )
1722 //msg_Warn( p_input, "SampleSize != 1" );
1723 return( p_track->i_sample_size );
1726 p_soun = p_track->p_sample->data.p_sample_soun;
1728 if( p_soun->i_qt_version == 1 )
1730 i_size = p_track->chunk[p_track->i_chunk].i_sample_count / p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
1735 int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
1736 ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first );
1737 if( i_samples > QT_V0_MAX_SAMPLES )
1739 i_samples = QT_V0_MAX_SAMPLES;
1741 i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
1744 //fprintf( stderr, "size=%d\n", i_size );
1749 static uint64_t MP4_GetTrackPos( track_data_mp4_t *p_track )
1751 unsigned int i_sample;
1755 i_pos = p_track->chunk[p_track->i_chunk].i_offset;
1757 if( p_track->i_sample_size )
1759 MP4_Box_data_sample_soun_t *p_soun = p_track->p_sample->data.p_sample_soun;
1761 if( p_soun->i_qt_version == 0 )
1763 i_pos += ( p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first ) *
1764 p_soun->i_channelcount * p_soun->i_samplesize / 8;
1768 /* we read chunk by chunk */
1774 for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
1775 i_sample < p_track->i_sample; i_sample++ )
1777 i_pos += p_track->p_sample_size[i_sample];
1784 static int MP4_TrackNextSample( input_thread_t *p_input,
1785 track_data_mp4_t *p_track )
1788 if( p_track->i_cat == AUDIO_ES &&
1789 p_track->i_sample_size != 0 )
1791 MP4_Box_data_sample_soun_t *p_soun;
1793 p_soun = p_track->p_sample->data.p_sample_soun;
1795 if( p_soun->i_qt_version == 1 )
1797 /* chunk by chunk */
1799 p_track->chunk[p_track->i_chunk].i_sample_first +
1800 p_track->chunk[p_track->i_chunk].i_sample_count;
1805 p_track->i_sample += QT_V0_MAX_SAMPLES;
1806 if( p_track->i_sample > p_track->chunk[p_track->i_chunk].i_sample_first + p_track->chunk[p_track->i_chunk].i_sample_count )
1809 p_track->chunk[p_track->i_chunk].i_sample_first +
1810 p_track->chunk[p_track->i_chunk].i_sample_count;
1816 p_track->i_sample++;
1819 if( p_track->i_sample >= p_track->i_sample_count )
1821 /* we have reach end of the track so free decoder stuff */
1822 msg_Warn( p_input, "track[0x%x] will be disabled", p_track->i_track_ID );
1823 MP4_TrackUnselect( p_input, p_track );
1824 return( VLC_EGENERIC );
1827 /* Have we changed chunk ? */
1828 if( p_track->i_sample >=
1829 p_track->chunk[p_track->i_chunk].i_sample_first +
1830 p_track->chunk[p_track->i_chunk].i_sample_count )
1832 if( TrackGotoChunkSample( p_input,
1834 p_track->i_chunk + 1,
1835 p_track->i_sample ) )
1837 msg_Warn( p_input, "track[0x%x] will be disabled (cannot restart decoder)", p_track->i_track_ID );
1838 MP4_TrackUnselect( p_input, p_track );
1839 return( VLC_EGENERIC );
1843 return( VLC_SUCCESS );