1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2001, 2002, 2003 VideoLAN
5 * $Id: mp4.c,v 1.11 2004/01/24 11:56:16 gbazin Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin at videolan dot org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
33 #include <vlc/input.h>
42 /*****************************************************************************
44 *****************************************************************************/
45 static int Open ( vlc_object_t * );
46 static void Close ( vlc_object_t * );
48 static int Capability(sout_mux_t *, int, void *, void * );
49 static int AddStream( sout_mux_t *, sout_input_t * );
50 static int DelStream( sout_mux_t *, sout_input_t * );
51 static int Mux ( sout_mux_t * );
53 /*****************************************************************************
55 *****************************************************************************/
56 #define FASTSTART_TEXT N_("Create \"Fast start\" files")
57 #define FASTSTART_LONGTEXT N_( \
58 "When this option is turned on, \"Fast start\" files will be created. " \
59 "(\"Fast start\" files are optimized for download, allowing the user " \
60 "to start previewing the file while it is downloading).")
63 set_description( _("MP4/MOV muxer") );
65 add_category_hint( "MP4/MOV muxer", NULL, VLC_TRUE );
66 add_bool( "mp4-faststart", 1, NULL, FASTSTART_TEXT, FASTSTART_LONGTEXT, VLC_TRUE );
68 set_capability( "sout mux", 5 );
69 add_shortcut( "mp4" );
70 add_shortcut( "mov" );
71 set_callbacks( Open, Close );
74 /*****************************************************************************
76 *****************************************************************************/
94 unsigned int i_entry_count;
95 unsigned int i_entry_max;
101 /* for later stco fix-up (fast start files) */
107 struct sout_mux_sys_t
111 vlc_bool_t b_fast_start;
119 mp4_stream_t **pp_streams;
132 static void bo_init ( bo_t *, int , uint8_t *, vlc_bool_t );
133 static void bo_add_8 ( bo_t *, uint8_t );
134 static void bo_add_16be ( bo_t *, uint16_t );
135 static void bo_add_24be ( bo_t *, uint32_t );
136 static void bo_add_32be ( bo_t *, uint32_t );
137 static void bo_add_64be ( bo_t *, uint64_t );
138 static void bo_add_fourcc(bo_t *, char * );
139 static void bo_add_bo ( bo_t *, bo_t * );
140 static void bo_add_mem ( bo_t *, int , uint8_t * );
141 static void bo_add_descr( bo_t *, uint8_t , uint32_t );
143 static void bo_fix_32be ( bo_t *, int , uint32_t );
145 static bo_t *box_new ( char *fcc );
146 static bo_t *box_full_new( char *fcc, uint8_t v, uint32_t f );
147 static void box_fix ( bo_t *box );
148 static void box_free ( bo_t *box );
149 static void box_gather ( bo_t *box, bo_t *box2 );
151 static void box_send( sout_mux_t *p_mux, bo_t *box );
153 static int64_t get_timestamp();
155 static sout_buffer_t *bo_to_sout( sout_instance_t *p_sout, bo_t *box );
157 /*****************************************************************************
159 *****************************************************************************/
160 static int Open( vlc_object_t *p_this )
162 sout_mux_t *p_mux = (sout_mux_t*)p_this;
163 sout_mux_sys_t *p_sys;
166 p_sys = malloc( sizeof( sout_mux_sys_t ) );
168 p_sys->i_nb_streams = 0;
169 p_sys->pp_streams = NULL;
170 p_sys->i_mdat_pos = 0;
171 p_sys->b_mov = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "mov" );
172 p_sys->i_start_dts = 0;
174 msg_Dbg( p_mux, "Open" );
176 p_mux->pf_capacity = Capability;
177 p_mux->pf_addstream = AddStream;
178 p_mux->pf_delstream = DelStream;
180 p_mux->p_sys = p_sys;
184 /* Now add ftyp header */
185 box = box_new( "ftyp" );
186 bo_add_fourcc( box, "isom" );
187 bo_add_32be ( box, 0 );
188 bo_add_fourcc( box, "mp41" );
191 p_sys->i_pos += box->i_buffer;
192 p_sys->i_mdat_pos = p_sys->i_pos;
194 box_send( p_mux, box );
198 * Quicktime actually doesn't like the 64 bits extensions !!! */
199 p_sys->b_64_ext = VLC_FALSE;
201 /* Now add mdat header */
202 box = box_new( "mdat" );
203 bo_add_64be ( box, 0 ); // enough to store an extended size
205 p_sys->i_pos += box->i_buffer;
207 box_send( p_mux, box );
212 static int GetDescrLength( int i_size )
214 if( i_size < 0x00000080 )
216 else if( i_size < 0x00004000 )
218 else if( i_size < 0x00200000 )
224 static bo_t *GetESDS( mp4_stream_t *p_stream )
228 int i_object_type_indication;
229 int i_decoder_specific_info_size;
231 if( p_stream->p_fmt->i_extra > 0 )
233 i_decoder_specific_info_size =
234 GetDescrLength( p_stream->p_fmt->i_extra );
238 i_decoder_specific_info_size = 0;
241 esds = box_full_new( "esds", 0, 0 );
244 bo_add_descr( esds, 0x03, 3 +
245 GetDescrLength( 13 + i_decoder_specific_info_size ) +
246 GetDescrLength( 1 ) );
247 bo_add_16be( esds, p_stream->i_track_id );
248 bo_add_8 ( esds, 0x1f ); // flags=0|streamPriority=0x1f
250 /* DecoderConfigDescr */
251 bo_add_descr( esds, 0x04, 13 + i_decoder_specific_info_size );
253 switch( p_stream->p_fmt->i_codec )
255 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
256 i_object_type_indication = 0x20;
258 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
259 /* FIXME MPEG-I=0x6b, MPEG-II = 0x60 -> 0x65 */
260 i_object_type_indication = 0x60;
262 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
263 /* FIXME for mpeg2-aac == 0x66->0x68 */
264 i_object_type_indication = 0x40;
266 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
267 i_object_type_indication =
268 p_stream->p_fmt->audio.i_rate < 32000 ? 0x69 : 0x6b;
271 i_object_type_indication = 0x00;
274 i_stream_type = p_stream->p_fmt->i_cat == VIDEO_ES ? 0x04 : 0x05;
276 bo_add_8 ( esds, i_object_type_indication );
277 bo_add_8 ( esds, ( i_stream_type << 2 ) | 1 );
278 bo_add_24be( esds, 1024 * 1024 ); // bufferSizeDB
279 bo_add_32be( esds, 0x7fffffff ); // maxBitrate
280 bo_add_32be( esds, 0 ); // avgBitrate
282 if( p_stream->p_fmt->i_extra > 0 )
286 /* DecoderSpecificInfo */
287 bo_add_descr( esds, 0x05, p_stream->p_fmt->i_extra );
289 for( i = 0; i < p_stream->p_fmt->i_extra; i++ )
291 bo_add_8( esds, ((uint8_t*)p_stream->p_fmt->p_extra)[i] );
295 /* SL_Descr mandatory */
296 bo_add_descr( esds, 0x06, 1 );
297 bo_add_8 ( esds, 0x02 ); // sl_predefined
304 static bo_t *GetWaveTag( mp4_stream_t *p_stream )
309 wave = box_new( "wave" );
311 box = box_new( "frma" );
312 bo_add_fourcc( box, "mp4a" );
314 box_gather( wave, box );
316 box = box_new( "mp4a" );
317 bo_add_32be( box, 0 );
319 box_gather( wave, box );
321 box = GetESDS( p_stream );
323 box_gather( wave, box );
325 box = box_new( "srcq" );
326 bo_add_32be( box, 0x40 );
328 box_gather( wave, box );
331 bo_add_32be( wave, 8 ); /* new empty box */
332 bo_add_32be( wave, 0 ); /* box label */
339 /* TODO: No idea about these values */
340 static bo_t *GetSVQ3Tag( mp4_stream_t *p_stream )
342 bo_t *smi = box_new( "SMI " );
344 bo_add_fourcc( smi, "SEQH" );
345 bo_add_32be( smi, 0x5 );
346 bo_add_32be( smi, 0xe2c0211d );
347 bo_add_8( smi, 0xc0 );
353 static bo_t *GetUdtaTag( sout_mux_t *p_mux )
355 sout_mux_sys_t *p_sys = p_mux->p_sys;
356 bo_t *udta = box_new( "udta" );
360 for( i_track = 0; i_track < p_sys->i_nb_streams; i_track++ )
362 mp4_stream_t *p_stream = p_sys->pp_streams[i_track];
364 if( p_stream->p_fmt->i_codec == VLC_FOURCC('m','p','4','v') ||
365 p_stream->p_fmt->i_codec == VLC_FOURCC('m','p','4','a') )
367 bo_t *box = box_new( "\251req" );
369 bo_add_16be( box, sizeof("QuickTime 6.0 or greater") - 1);
370 bo_add_16be( box, 0 );
371 bo_add_mem( box, sizeof("QuickTime 6.0 or greater") - 1,
372 "QuickTime 6.0 or greater" );
374 box_gather( udta, box );
381 bo_t *box = box_new( "\251enc" );
383 bo_add_16be( box, sizeof(PACKAGE_STRING " stream output") - 1);
384 bo_add_16be( box, 0 );
385 bo_add_mem( box, sizeof(PACKAGE_STRING " stream output") - 1,
386 PACKAGE_STRING " stream output" );
388 box_gather( udta, box );
395 static bo_t *GetSounBox( sout_mux_t *p_mux, mp4_stream_t *p_stream )
397 sout_mux_sys_t *p_sys = p_mux->p_sys;
398 vlc_bool_t b_descr = VLC_FALSE;
403 switch( p_stream->p_fmt->i_codec )
405 case VLC_FOURCC('m','p','4','a'):
406 memcpy( fcc, "mp4a", 4 );
410 case VLC_FOURCC('m','p','g','a'):
412 memcpy( fcc, ".mp3", 4 );
414 memcpy( fcc, "mp4a", 4 );
418 memcpy( fcc, (char*)&p_stream->p_fmt->i_codec, 4 );
422 soun = box_new( fcc );
423 for( i = 0; i < 6; i++ )
425 bo_add_8( soun, 0 ); // reserved;
427 bo_add_16be( soun, 1 ); // data-reference-index
429 /* SoundDescription */
431 p_stream->p_fmt->i_codec == VLC_FOURCC('m','p','4','a') )
433 bo_add_16be( soun, 1 ); // version 1;
437 bo_add_16be( soun, 0 ); // version 0;
439 bo_add_16be( soun, 0 ); // revision level (0)
440 bo_add_32be( soun, 0 ); // vendor
442 bo_add_16be( soun, p_stream->p_fmt->audio.i_channels );
444 bo_add_16be( soun, p_stream->p_fmt->audio.i_bitspersample ?
445 p_stream->p_fmt->audio.i_bitspersample : 16 );
446 bo_add_16be( soun, -2 ); // compression id
447 bo_add_16be( soun, 0 ); // packet size (0)
448 bo_add_16be( soun, p_stream->p_fmt->audio.i_rate ); // sampleratehi
449 bo_add_16be( soun, 0 ); // sampleratelo
451 /* Extended data for SoundDescription V1 */
453 p_stream->p_fmt->i_codec == VLC_FOURCC('m','p','4','a') )
455 /* samples per packet */
456 bo_add_32be( soun, p_stream->p_fmt->audio.i_frame_length );
457 bo_add_32be( soun, 1536 ); /* bytes per packet */
458 bo_add_32be( soun, 2 ); /* bytes per frame */
459 /* bytes per sample */
460 bo_add_32be( soun, 2 /*p_stream->p_fmt->audio.i_bitspersample/8 */);
463 /* Add an ES Descriptor */
469 p_stream->p_fmt->i_codec == VLC_FOURCC('m','p','4','a') )
471 box = GetWaveTag( p_stream );
475 box = GetESDS( p_stream );
478 box_gather( soun, box );
486 static bo_t *GetVideBox( sout_mux_t *p_mux, mp4_stream_t *p_stream )
493 switch( p_stream->p_fmt->i_codec )
495 case VLC_FOURCC('m','p','4','v'):
496 case VLC_FOURCC('m','p','g','v'):
497 memcpy( fcc, "mp4v", 4 );
500 case VLC_FOURCC('M','J','P','G'):
501 memcpy( fcc, "mjpa", 4 );
504 case VLC_FOURCC('S','V','Q','3'):
505 memcpy( fcc, "SVQ3", 4 );
509 memcpy( fcc, (char*)&p_stream->p_fmt->i_codec, 4 );
513 vide = box_new( fcc );
514 for( i = 0; i < 6; i++ )
516 bo_add_8( vide, 0 ); // reserved;
518 bo_add_16be( vide, 1 ); // data-reference-index
520 bo_add_16be( vide, 0 ); // predefined;
521 bo_add_16be( vide, 0 ); // reserved;
522 for( i = 0; i < 3; i++ )
524 bo_add_32be( vide, 0 ); // predefined;
527 bo_add_16be( vide, p_stream->p_fmt->video.i_width ); // i_width
528 bo_add_16be( vide, p_stream->p_fmt->video.i_height ); // i_height
530 bo_add_32be( vide, 0x00480000 ); // h 72dpi
531 bo_add_32be( vide, 0x00480000 ); // v 72dpi
533 bo_add_32be( vide, 0 ); // data size, always 0
534 bo_add_16be( vide, 1 ); // frames count per sample
537 for( i = 0; i < 32; i++ )
542 bo_add_16be( vide, 0x18 ); // depth
543 bo_add_16be( vide, 0xffff ); // predefined
545 /* add an ES Descriptor */
546 switch( p_stream->p_fmt->i_codec )
548 case VLC_FOURCC('m','p','4','v'):
549 case VLC_FOURCC('m','p','g','v'):
551 bo_t *esds = GetESDS( p_stream );
554 box_gather( vide, esds );
558 case VLC_FOURCC('S','V','Q','3'):
560 bo_t *esds = GetSVQ3Tag( p_stream );
563 box_gather( vide, esds );
576 static bo_t *GetStblBox( sout_mux_t *p_mux, mp4_stream_t *p_stream )
578 sout_mux_sys_t *p_sys = p_mux->p_sys;
579 unsigned int i_chunk, i_stsc_last_val, i_stsc_entries, i, i_index;
580 bo_t *stbl, *stsd, *stts, *stco, *stsc, *stsz;
581 uint32_t i_timescale;
583 stbl = box_new( "stbl" );
584 stsd = box_full_new( "stsd", 0, 0 );
585 bo_add_32be( stsd, 1 );
587 if( p_stream->p_fmt->i_cat == AUDIO_ES )
589 bo_t *soun = GetSounBox( p_mux, p_stream );
590 box_gather( stsd, soun );
592 else if( p_stream->p_fmt->i_cat == VIDEO_ES )
594 bo_t *vide = GetVideBox( p_mux, p_stream );
595 box_gather( stsd, vide );
598 /* append stsd to stbl */
600 box_gather( stbl, stsd );
602 /* chunk offset table */
603 p_stream->i_stco_pos = stbl->i_buffer + 16;
604 if( p_sys->i_pos >= (((uint64_t)0x1) << 32) )
606 /* 64 bits version */
607 p_stream->b_stco64 = VLC_TRUE;
608 stco = box_full_new( "co64", 0, 0 );
612 /* 32 bits version */
613 p_stream->b_stco64 = VLC_FALSE;
614 stco = box_full_new( "stco", 0, 0 );
616 bo_add_32be( stco, 0 ); // entry-count (fixed latter)
618 /* sample to chunk table */
619 stsc = box_full_new( "stsc", 0, 0 );
620 bo_add_32be( stsc, 0 ); // entry-count (fixed latter)
622 for( i_chunk = 0, i_stsc_last_val = 0, i_stsc_entries = 0, i = 0;
623 i < p_stream->i_entry_count; i_chunk++ )
627 if( p_stream->b_stco64 )
628 bo_add_64be( stco, p_stream->entry[i].i_pos );
630 bo_add_32be( stco, p_stream->entry[i].i_pos );
632 while( i < p_stream->i_entry_count )
634 if( i + 1 < p_stream->i_entry_count &&
635 p_stream->entry[i].i_pos + p_stream->entry[i].i_size
636 != p_stream->entry[i + 1].i_pos )
645 /* Add entry to the stsc table */
646 if( i_stsc_last_val != i - i_first )
648 bo_add_32be( stsc, 1 + i_chunk ); // first-chunk
649 bo_add_32be( stsc, i - i_first ) ; // samples-per-chunk
650 bo_add_32be( stsc, 1 ); // sample-descr-index
651 i_stsc_last_val = i - i_first;
656 /* Fix stco entry count */
657 bo_fix_32be( stco, 12, i_chunk );
658 msg_Dbg( p_mux, "created %d chunks (stco)", i_chunk );
660 /* append stco to stbl */
662 box_gather( stbl, stco );
664 /* Fix stsc entry count */
665 bo_fix_32be( stsc, 12, i_stsc_entries );
667 /* append stsc to stbl */
669 box_gather( stbl, stsc );
672 stts = box_full_new( "stts", 0, 0 );
673 bo_add_32be( stts, 0 ); // entry-count (fixed latter)
675 if( p_stream->p_fmt->i_cat == AUDIO_ES )
676 i_timescale = p_stream->p_fmt->audio.i_rate;
680 for( i = 0, i_index = 0; i < p_stream->i_entry_count; i_index++)
686 i_delta = p_stream->entry[i].i_length;
688 while( i < p_stream->i_entry_count )
690 if( i + 1 < p_stream->i_entry_count &&
691 p_stream->entry[i + 1].i_length != i_delta )
700 bo_add_32be( stts, i - i_first ); // sample-count
701 bo_add_32be( stts, i_delta * (int64_t)i_timescale /
702 (int64_t)1000000 ); // sample-delta
704 bo_fix_32be( stts, 12, i_index );
706 /* append stts to stbl */
708 box_gather( stbl, stts );
710 /* FIXME add ctts ?? FIXME */
712 stsz = box_full_new( "stsz", 0, 0 );
713 bo_add_32be( stsz, 0 ); // sample-size
714 bo_add_32be( stsz, p_stream->i_entry_count ); // sample-count
715 for( i = 0; i < p_stream->i_entry_count; i++ )
717 bo_add_32be( stsz, p_stream->entry[i].i_size ); // sample-size
719 /* append stsz to stbl */
721 box_gather( stbl, stsz );
728 static uint32_t mvhd_matrix[9] =
729 { 0x10000, 0, 0, 0, 0x10000, 0, 0, 0, 0x40000000 };
731 static bo_t *GetMoovBox( sout_mux_t *p_mux )
733 sout_mux_sys_t *p_sys = p_mux->p_sys;
738 uint32_t i_movie_timescale = 90000;
739 int64_t i_movie_duration = 0;
741 moov = box_new( "moov" );
743 /* *** add /moov/mvhd *** */
744 if( !p_sys->b_64_ext )
746 mvhd = box_full_new( "mvhd", 0, 0 );
747 bo_add_32be( mvhd, get_timestamp() ); // creation time
748 bo_add_32be( mvhd, get_timestamp() ); // modification time
749 bo_add_32be( mvhd, i_movie_timescale); // timescale
750 bo_add_32be( mvhd, i_movie_duration ); // duration
754 mvhd = box_full_new( "mvhd", 1, 0 );
755 bo_add_64be( mvhd, get_timestamp() ); // creation time
756 bo_add_64be( mvhd, get_timestamp() ); // modification time
757 bo_add_32be( mvhd, i_movie_timescale); // timescale
758 bo_add_64be( mvhd, i_movie_duration ); // duration
760 bo_add_32be( mvhd, 0x10000 ); // rate
761 bo_add_16be( mvhd, 0x100 ); // volume
762 bo_add_16be( mvhd, 0 ); // reserved
763 for( i = 0; i < 2; i++ )
765 bo_add_32be( mvhd, 0 ); // reserved
767 for( i = 0; i < 9; i++ )
769 bo_add_32be( mvhd, mvhd_matrix[i] );// matrix
771 for( i = 0; i < 6; i++ )
773 bo_add_32be( mvhd, 0 ); // pre-defined
776 /* Find the 1st track id */
777 for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
779 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
781 if( p_stream->p_fmt->i_cat == AUDIO_ES ||
782 p_stream->p_fmt->i_cat == VIDEO_ES )
785 bo_add_32be( mvhd, p_stream->i_track_id ); // next-track-id
789 if( i_trak == p_sys->i_nb_streams ) /* Just for sanity reasons */
790 bo_add_32be( mvhd, 0xffffffff );
793 box_gather( moov, mvhd );
795 for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
797 mp4_stream_t *p_stream;
798 uint32_t i_timescale;
800 bo_t *trak, *tkhd, *mdia, *mdhd, *hdlr;
801 bo_t *minf, *dinf, *dref, *url, *stbl;
803 p_stream = p_sys->pp_streams[i_trak];
805 if( p_stream->p_fmt->i_cat != AUDIO_ES &&
806 p_stream->p_fmt->i_cat != VIDEO_ES )
808 msg_Err( p_mux, "FIXME ignoring trak (noaudio&&novideo)" );
812 if( p_stream->p_fmt->i_cat == AUDIO_ES )
813 i_timescale = p_stream->p_fmt->audio.i_rate;
817 /* *** add /moov/trak *** */
818 trak = box_new( "trak" );
820 /* *** add /moov/trak/tkhd *** */
821 if( !p_sys->b_64_ext )
824 tkhd = box_full_new( "tkhd", 0, 0x0f );
826 tkhd = box_full_new( "tkhd", 0, 1 );
828 bo_add_32be( tkhd, get_timestamp() ); // creation time
829 bo_add_32be( tkhd, get_timestamp() ); // modification time
830 bo_add_32be( tkhd, p_stream->i_track_id );
831 bo_add_32be( tkhd, 0 ); // reserved 0
832 bo_add_32be( tkhd, p_stream->i_duration *
833 (int64_t)i_movie_timescale /
834 (mtime_t)1000000 ); // duration
839 tkhd = box_full_new( "tkhd", 1, 0x0f );
841 tkhd = box_full_new( "tkhd", 1, 1 );
843 bo_add_64be( tkhd, get_timestamp() ); // creation time
844 bo_add_64be( tkhd, get_timestamp() ); // modification time
845 bo_add_32be( tkhd, p_stream->i_track_id );
846 bo_add_32be( tkhd, 0 ); // reserved 0
847 bo_add_64be( tkhd, p_stream->i_duration *
848 (int64_t)i_movie_timescale /
849 (mtime_t)1000000 ); // duration
852 for( i = 0; i < 2; i++ )
854 bo_add_32be( tkhd, 0 ); // reserved
856 bo_add_16be( tkhd, 0 ); // layer
857 bo_add_16be( tkhd, 0 ); // pre-defined
859 bo_add_16be( tkhd, p_stream->p_fmt->i_cat == AUDIO_ES ? 0x100 : 0 );
860 bo_add_16be( tkhd, 0 ); // reserved
861 for( i = 0; i < 9; i++ )
863 bo_add_32be( tkhd, mvhd_matrix[i] ); // matrix
865 if( p_stream->p_fmt->i_cat == AUDIO_ES )
867 bo_add_32be( tkhd, 0 ); // width (presentation)
868 bo_add_32be( tkhd, 0 ); // height(presentation)
872 // width (presentation)
873 bo_add_32be( tkhd, p_stream->p_fmt->video.i_aspect *
874 p_stream->p_fmt->video.i_height /
875 VOUT_ASPECT_FACTOR << 16 );
876 // height(presentation)
877 bo_add_32be( tkhd, p_stream->p_fmt->video.i_height << 16 );
880 box_gather( trak, tkhd );
882 /* *** add /moov/trak/mdia *** */
883 mdia = box_new( "mdia" );
886 if( !p_sys->b_64_ext )
888 mdhd = box_full_new( "mdhd", 0, 0 );
889 bo_add_32be( mdhd, get_timestamp() ); // creation time
890 bo_add_32be( mdhd, get_timestamp() ); // modification time
891 bo_add_32be( mdhd, i_timescale); // timescale
892 bo_add_32be( mdhd, p_stream->i_duration * (int64_t)i_timescale /
893 (mtime_t)1000000 ); // duration
897 mdhd = box_full_new( "mdhd", 1, 0 );
898 bo_add_64be( mdhd, get_timestamp() ); // creation time
899 bo_add_64be( mdhd, get_timestamp() ); // modification time
900 bo_add_32be( mdhd, i_timescale); // timescale
901 bo_add_64be( mdhd, p_stream->i_duration * (int64_t)i_timescale /
902 (mtime_t)1000000 ); // duration
905 bo_add_16be( mdhd, 0 ); // language FIXME
906 bo_add_16be( mdhd, 0 ); // predefined
908 box_gather( mdia, mdhd );
910 /* handler reference */
911 hdlr = box_full_new( "hdlr", 0, 0 );
913 bo_add_fourcc( hdlr, "mhlr" ); // media handler
914 if( p_stream->p_fmt->i_cat == AUDIO_ES )
916 bo_add_fourcc( hdlr, "soun" );
920 bo_add_fourcc( hdlr, "vide" );
923 bo_add_32be( hdlr, 0 ); // reserved
924 bo_add_32be( hdlr, 0 ); // reserved
925 bo_add_32be( hdlr, 0 ); // reserved
927 if( p_stream->p_fmt->i_cat == AUDIO_ES )
929 bo_add_8( hdlr, 13 );
930 bo_add_mem( hdlr, 13, "SoundHandler" );
934 bo_add_8( hdlr, 13 );
935 bo_add_mem( hdlr, 13, "VideoHandler" );
939 box_gather( mdia, hdlr );
942 minf = box_new( "minf" );
945 if( p_stream->p_fmt->i_cat == AUDIO_ES )
949 smhd = box_full_new( "smhd", 0, 0 );
950 bo_add_16be( smhd, 0 ); // balance
951 bo_add_16be( smhd, 0 ); // reserved
954 box_gather( minf, smhd );
956 else if( p_stream->p_fmt->i_cat == VIDEO_ES )
960 vmhd = box_full_new( "vmhd", 0, 1 );
961 bo_add_16be( vmhd, 0 ); // graphicsmode
962 for( i = 0; i < 3; i++ )
964 bo_add_16be( vmhd, 0 ); // opcolor
968 box_gather( minf, vmhd );
972 dinf = box_new( "dinf" );
973 dref = box_full_new( "dref", 0, 0 );
974 bo_add_32be( dref, 1 );
975 url = box_full_new( "url ", 0, 0x01 );
977 box_gather( dref, url );
979 box_gather( dinf, dref );
981 /* append dinf to mdia */
983 box_gather( minf, dinf );
986 stbl = GetStblBox( p_mux, p_stream );
988 /* append stbl to minf */
989 p_stream->i_stco_pos += minf->i_buffer;
990 box_gather( minf, stbl );
992 /* append minf to mdia */
994 p_stream->i_stco_pos += mdia->i_buffer;
995 box_gather( mdia, minf );
997 /* append mdia to trak */
999 p_stream->i_stco_pos += trak->i_buffer;
1000 box_gather( trak, mdia );
1002 /* append trak to moov */
1004 p_stream->i_stco_pos += moov->i_buffer;
1005 box_gather( moov, trak );
1008 /* Add user data tags */
1009 box_gather( moov, GetUdtaTag( p_mux ) );
1015 /*****************************************************************************
1017 *****************************************************************************/
1018 static void Close( vlc_object_t * p_this )
1020 sout_mux_t *p_mux = (sout_mux_t*)p_this;
1021 sout_mux_sys_t *p_sys = p_mux->p_sys;
1022 sout_buffer_t *p_hdr;
1027 uint64_t i_moov_pos;
1029 uint32_t i_movie_timescale = 90000;
1030 int64_t i_movie_duration = 0;
1032 msg_Dbg( p_mux, "Close" );
1034 /* Create general info */
1035 for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
1037 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
1038 i_movie_duration = __MAX( i_movie_duration, p_stream->i_duration );
1040 msg_Dbg( p_mux, "movie duration %ds",
1041 (uint32_t)( i_movie_duration / (mtime_t)1000000 ) );
1043 i_movie_duration = i_movie_duration * i_movie_timescale / 1000000;
1045 /* Update mdat size */
1046 bo_init( &bo, 0, NULL, VLC_TRUE );
1047 if( p_sys->i_pos - p_sys->i_mdat_pos >= (((uint64_t)1)<<32) )
1050 bo_add_32be ( &bo, 1 );
1051 bo_add_fourcc( &bo, "mdat" );
1052 bo_add_64be ( &bo, p_sys->i_pos - p_sys->i_mdat_pos );
1056 bo_add_32be ( &bo, 8 );
1057 bo_add_fourcc( &bo, "wide" );
1058 bo_add_32be ( &bo, p_sys->i_pos - p_sys->i_mdat_pos - 8 );
1059 bo_add_fourcc( &bo, "mdat" );
1061 p_hdr = bo_to_sout( p_mux->p_sout, &bo );
1062 free( bo.p_buffer );
1064 sout_AccessOutSeek( p_mux->p_access, p_sys->i_mdat_pos );
1065 sout_AccessOutWrite( p_mux->p_access, p_hdr );
1067 /* Create MOOV header */
1068 i_moov_pos = p_sys->i_pos;
1069 moov = GetMoovBox( p_mux );
1071 /* Check we need to create "fast start" files */
1072 var_Create( p_this, "mp4-faststart", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
1073 var_Get( p_this, "mp4-faststart", &val );
1074 p_sys->b_fast_start = val.b_bool;
1075 while( p_sys->b_fast_start )
1077 /* Move data to the end of the file so we can fit the moov header
1079 sout_buffer_t *p_buf;
1080 int64_t i_chunk, i_size = p_sys->i_pos - p_sys->i_mdat_pos;
1081 int i_moov_size = moov->i_buffer;
1085 i_chunk = __MIN( 32768, i_size );
1086 p_buf = sout_BufferNew( p_mux->p_sout, i_chunk );
1087 sout_AccessOutSeek( p_mux->p_access,
1088 p_sys->i_mdat_pos + i_size - i_chunk );
1089 if( sout_AccessOutRead( p_mux->p_access, p_buf ) < i_chunk )
1091 msg_Warn( p_this, "read() not supported by acces output, "
1092 "won't create a fast start file" );
1093 p_sys->b_fast_start = VLC_FALSE;
1096 sout_AccessOutSeek( p_mux->p_access, p_sys->i_mdat_pos + i_size +
1097 i_moov_size - i_chunk );
1098 sout_AccessOutWrite( p_mux->p_access, p_buf );
1102 if( !p_sys->b_fast_start ) break;
1104 /* Fix-up samples to chunks table in MOOV header */
1105 for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
1107 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
1111 moov->i_buffer = p_stream->i_stco_pos;
1112 for( i_chunk = 0, i = 0; i < p_stream->i_entry_count; i_chunk++ )
1114 if( p_stream->b_stco64 )
1115 bo_add_64be( moov, p_stream->entry[i].i_pos + i_moov_size);
1117 bo_add_32be( moov, p_stream->entry[i].i_pos + i_moov_size);
1119 while( i < p_stream->i_entry_count )
1121 if( i + 1 < p_stream->i_entry_count &&
1122 p_stream->entry[i].i_pos + p_stream->entry[i].i_size
1123 != p_stream->entry[i + 1].i_pos )
1134 moov->i_buffer = i_moov_size;
1135 i_moov_pos = p_sys->i_mdat_pos;
1136 p_sys->b_fast_start = VLC_FALSE;
1139 /* Write MOOV header */
1140 sout_AccessOutSeek( p_mux->p_access, i_moov_pos );
1141 box_send( p_mux, moov );
1144 for( i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++ )
1146 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
1148 if( p_stream->p_fmt->p_extra )
1150 free( p_stream->p_fmt->p_extra );
1152 free( p_stream->p_fmt );
1153 free( p_stream->entry );
1159 static int Capability( sout_mux_t *p_mux, int i_query, void *p_args,
1164 case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
1165 *(vlc_bool_t*)p_answer = VLC_FALSE;
1166 return( SOUT_MUX_CAP_ERR_OK );
1168 return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
1172 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
1174 sout_mux_sys_t *p_sys = p_mux->p_sys;
1175 mp4_stream_t *p_stream;
1177 switch( p_input->p_fmt->i_codec )
1179 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1180 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1181 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
1182 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
1183 case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
1184 case VLC_FOURCC( 'm', 'j', 'p', 'b' ):
1185 case VLC_FOURCC( 'S', 'V', 'Q', '3' ):
1188 msg_Err( p_mux, "unsupported codec %4.4s in mp4",
1189 (char*)&p_input->p_fmt->i_codec );
1190 return VLC_EGENERIC;
1193 p_stream = malloc( sizeof( mp4_stream_t ) );
1194 p_stream->p_fmt = malloc( sizeof( es_format_t ) );
1195 memcpy( p_stream->p_fmt, p_input->p_fmt, sizeof( es_format_t ) );
1196 if( p_stream->p_fmt->i_extra )
1198 p_stream->p_fmt->p_extra =
1199 malloc( p_stream->p_fmt->i_extra );
1200 memcpy( p_stream->p_fmt->p_extra,
1201 p_input->p_fmt->p_extra,
1202 p_input->p_fmt->i_extra );
1204 p_stream->i_track_id = p_sys->i_nb_streams + 1;
1205 p_stream->i_entry_count = 0;
1206 p_stream->i_entry_max = 1000;
1208 calloc( p_stream->i_entry_max, sizeof( mp4_entry_t ) );
1209 p_stream->i_duration = 0;
1211 p_input->p_sys = p_stream;
1213 msg_Dbg( p_mux, "adding input" );
1215 TAB_APPEND( p_sys->i_nb_streams, p_sys->pp_streams, p_stream );
1216 return( VLC_SUCCESS );
1219 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
1221 msg_Dbg( p_mux, "removing input" );
1225 /****************************************************************************/
1227 static int MuxGetStream( sout_mux_t *p_mux, int *pi_stream, mtime_t *pi_dts )
1233 for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
1235 sout_fifo_t *p_fifo;
1237 p_fifo = p_mux->pp_inputs[i]->p_fifo;
1239 if( p_fifo->i_depth > 1 )
1241 sout_buffer_t *p_buf;
1243 p_buf = sout_FifoShow( p_fifo );
1244 if( i_stream < 0 || p_buf->i_dts < i_dts )
1246 i_dts = p_buf->i_dts;
1252 return( -1 ); // wait that all fifo have at least 2 packets
1257 *pi_stream = i_stream;
1266 static int Mux( sout_mux_t *p_mux )
1268 sout_mux_sys_t *p_sys = p_mux->p_sys;
1272 sout_input_t *p_input;
1274 mp4_stream_t *p_stream;
1275 sout_buffer_t *p_data;
1278 if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
1280 return( VLC_SUCCESS );
1283 if( !p_sys->i_start_dts )
1284 p_sys->i_start_dts = i_dts;
1286 p_input = p_mux->pp_inputs[i_stream];
1287 p_stream = (mp4_stream_t*)p_input->p_sys;
1289 p_data = sout_FifoGet( p_input->p_fifo );
1291 /* add index entry */
1292 p_stream->entry[p_stream->i_entry_count].i_pos = p_sys->i_pos;
1293 p_stream->entry[p_stream->i_entry_count].i_size = p_data->i_size;
1294 p_stream->entry[p_stream->i_entry_count].i_pts = p_data->i_pts;
1295 p_stream->entry[p_stream->i_entry_count].i_dts = p_data->i_dts;
1296 p_stream->entry[p_stream->i_entry_count].i_length=
1297 __MAX( p_data->i_length, 0 );
1299 if( p_stream->i_entry_count == 0 )
1301 /* Here is another bad hack.
1302 * To make sure audio/video are in sync, we report a corrected
1303 * length for the 1st sample. */
1304 p_stream->entry[p_stream->i_entry_count].i_length =
1305 __MAX( p_data->i_length, 0 ) +
1306 p_data->i_pts - p_sys->i_start_dts;
1309 p_stream->i_entry_count++;
1310 if( p_stream->i_entry_count >= p_stream->i_entry_max )
1312 p_stream->i_entry_max += 1000;
1314 realloc( p_stream->entry,
1315 p_stream->i_entry_max * sizeof( mp4_entry_t ) );
1319 p_stream->i_duration += __MAX( p_data->i_length, 0 );
1320 p_sys->i_pos += p_data->i_size;
1323 sout_AccessOutWrite( p_mux->p_access, p_data );
1326 return( VLC_SUCCESS );
1330 /****************************************************************************/
1332 static void bo_init( bo_t *p_bo, int i_size, uint8_t *p_buffer,
1337 p_bo->i_buffer_size = __MAX( i_size, 1024 );
1338 p_bo->p_buffer = malloc( p_bo->i_buffer_size );
1342 p_bo->i_buffer_size = i_size;
1343 p_bo->p_buffer = p_buffer;
1346 p_bo->b_grow = b_grow;
1350 static void bo_add_8( bo_t *p_bo, uint8_t i )
1352 if( p_bo->i_buffer < p_bo->i_buffer_size )
1354 p_bo->p_buffer[p_bo->i_buffer] = i;
1356 else if( p_bo->b_grow )
1358 p_bo->i_buffer_size += 1024;
1359 p_bo->p_buffer = realloc( p_bo->p_buffer, p_bo->i_buffer_size );
1361 p_bo->p_buffer[p_bo->i_buffer] = i;
1367 static void bo_add_16be( bo_t *p_bo, uint16_t i )
1369 bo_add_8( p_bo, ( ( i >> 8) &0xff ) );
1370 bo_add_8( p_bo, i &0xff );
1373 static void bo_add_24be( bo_t *p_bo, uint32_t i )
1375 bo_add_8( p_bo, ( ( i >> 16) &0xff ) );
1376 bo_add_8( p_bo, ( ( i >> 8) &0xff ) );
1377 bo_add_8( p_bo, ( i &0xff ) );
1379 static void bo_add_32be( bo_t *p_bo, uint32_t i )
1381 bo_add_16be( p_bo, ( ( i >> 16) &0xffff ) );
1382 bo_add_16be( p_bo, i &0xffff );
1385 static void bo_fix_32be ( bo_t *p_bo, int i_pos, uint32_t i)
1387 p_bo->p_buffer[i_pos ] = ( i >> 24 )&0xff;
1388 p_bo->p_buffer[i_pos + 1] = ( i >> 16 )&0xff;
1389 p_bo->p_buffer[i_pos + 2] = ( i >> 8 )&0xff;
1390 p_bo->p_buffer[i_pos + 3] = ( i )&0xff;
1393 static void bo_add_64be( bo_t *p_bo, uint64_t i )
1395 bo_add_32be( p_bo, ( ( i >> 32) &0xffffffff ) );
1396 bo_add_32be( p_bo, i &0xffffffff );
1399 static void bo_add_fourcc( bo_t *p_bo, char *fcc )
1401 bo_add_8( p_bo, fcc[0] );
1402 bo_add_8( p_bo, fcc[1] );
1403 bo_add_8( p_bo, fcc[2] );
1404 bo_add_8( p_bo, fcc[3] );
1407 static void bo_add_mem( bo_t *p_bo, int i_size, uint8_t *p_mem )
1411 for( i = 0; i < i_size; i++ )
1413 bo_add_8( p_bo, p_mem[i] );
1417 static void bo_add_descr( bo_t *p_bo, uint8_t tag, uint32_t i_size )
1423 vals[3] = (unsigned char)(i_length & 0x7f);
1425 vals[2] = (unsigned char)((i_length & 0x7f) | 0x80);
1427 vals[1] = (unsigned char)((i_length & 0x7f) | 0x80);
1429 vals[0] = (unsigned char)((i_length & 0x7f) | 0x80);
1431 bo_add_8( p_bo, tag );
1433 if( i_size < 0x00000080 )
1435 bo_add_8( p_bo, vals[3] );
1437 else if( i_size < 0x00004000 )
1439 bo_add_8( p_bo, vals[2] );
1440 bo_add_8( p_bo, vals[3] );
1442 else if( i_size < 0x00200000 )
1444 bo_add_8( p_bo, vals[1] );
1445 bo_add_8( p_bo, vals[2] );
1446 bo_add_8( p_bo, vals[3] );
1448 else if( i_size < 0x10000000 )
1450 bo_add_8( p_bo, vals[0] );
1451 bo_add_8( p_bo, vals[1] );
1452 bo_add_8( p_bo, vals[2] );
1453 bo_add_8( p_bo, vals[3] );
1457 static void bo_add_bo( bo_t *p_bo, bo_t *p_bo2 )
1461 for( i = 0; i < p_bo2->i_buffer; i++ )
1463 bo_add_8( p_bo, p_bo2->p_buffer[i] );
1467 static bo_t * box_new( char *fcc )
1471 if( ( box = malloc( sizeof( bo_t ) ) ) )
1473 bo_init( box, 0, NULL, VLC_TRUE );
1475 bo_add_32be ( box, 0 );
1476 bo_add_fourcc( box, fcc );
1482 static bo_t * box_full_new( char *fcc, uint8_t v, uint32_t f )
1486 if( ( box = malloc( sizeof( bo_t ) ) ) )
1488 bo_init( box, 0, NULL, VLC_TRUE );
1490 bo_add_32be ( box, 0 );
1491 bo_add_fourcc( box, fcc );
1492 bo_add_8 ( box, v );
1493 bo_add_24be ( box, f );
1499 static void box_fix( bo_t *box )
1503 memcpy( &box_tmp, box, sizeof( bo_t ) );
1505 box_tmp.i_buffer = 0;
1506 bo_add_32be( &box_tmp, box->i_buffer );
1509 static void box_free( bo_t *box )
1513 free( box->p_buffer );
1519 static void box_gather ( bo_t *box, bo_t *box2 )
1521 bo_add_bo( box, box2 );
1525 static sout_buffer_t * bo_to_sout( sout_instance_t *p_sout, bo_t *box )
1527 sout_buffer_t *p_buf;
1529 p_buf = sout_BufferNew( p_sout, box->i_buffer );
1530 if( box->i_buffer > 0 )
1532 memcpy( p_buf->p_buffer, box->p_buffer, box->i_buffer );
1535 p_buf->i_size = box->i_buffer;
1540 static void box_send( sout_mux_t *p_mux, bo_t *box )
1542 sout_buffer_t *p_buf;
1544 p_buf = bo_to_sout( p_mux->p_sout, box );
1547 sout_AccessOutWrite( p_mux->p_access, p_buf );
1550 static int64_t get_timestamp()
1552 int64_t i_timestamp = 0;
1555 i_timestamp = time(NULL);
1556 i_timestamp += 2082844800; // MOV/MP4 start date is 1/1/1904
1557 // 208284480 is (((1970 - 1904) * 365) + 17) * 24 * 60 * 60