1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 VideoLAN
5 * $Id: asf.c,v 1.6 2003/08/29 01:11:43 fenrir Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
30 #include <vlc/input.h>
35 /*****************************************************************************
37 *****************************************************************************/
38 static int Open ( vlc_object_t * );
39 static void Close ( vlc_object_t * );
42 set_description( _("Asf muxer") );
43 set_capability( "sout mux", 5 );
44 add_shortcut( "asf" );
45 add_shortcut( "asfh" );
46 set_callbacks( Open, Close );
49 /*****************************************************************************
51 *****************************************************************************/
52 static int Capability(sout_mux_t *, int, void *, void * );
53 static int AddStream( sout_mux_t *, sout_input_t * );
54 static int DelStream( sout_mux_t *, sout_input_t * );
55 static int Mux ( sout_mux_t * );
70 /* codec informations */
71 uint16_t i_tag; /* for audio */
72 vlc_fourcc_t i_fourcc; /* for video */
73 char *psz_name; /* codec name */
83 guid_t fid; /* file id */
85 int64_t i_packet_count;
91 asf_track_t track[128];
93 vlc_bool_t b_write_header;
100 vlc_bool_t b_asf_http;
104 static int MuxGetStream( sout_mux_t *, int *pi_stream, mtime_t *pi_dts );
106 static sout_buffer_t *asf_header_create( sout_mux_t *, vlc_bool_t b_broadcast );
107 static sout_buffer_t *asf_packet_create( sout_mux_t *,
108 asf_track_t *, sout_buffer_t * );
109 static sout_buffer_t *asf_stream_end_create( sout_mux_t *);
118 static void bo_init ( bo_t *, uint8_t *, int );
119 static void bo_add_u8 ( bo_t *, uint8_t );
120 static void bo_addle_u16( bo_t *, uint16_t );
121 static void bo_addle_u32( bo_t *, uint32_t );
122 static void bo_addle_u64( bo_t *, uint64_t );
123 static void bo_add_mem ( bo_t *, uint8_t *, int );
125 static void bo_addle_str16( bo_t *, char * );
127 /*****************************************************************************
129 *****************************************************************************/
130 static int Open( vlc_object_t *p_this )
132 sout_mux_t *p_mux = (sout_mux_t*)p_this;
133 sout_mux_sys_t *p_sys;
136 msg_Dbg( p_mux, "Asf muxer opened" );
138 p_mux->pf_capacity = Capability;
139 p_mux->pf_addstream = AddStream;
140 p_mux->pf_delstream = DelStream;
143 p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
144 p_sys->b_asf_http = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "asfh" );
145 if( p_sys->b_asf_http )
147 msg_Dbg( p_mux, "creating asf stream to be used with mmsh" );
150 p_sys->i_pk_used = 0;
151 p_sys->i_pk_frame = 0;
152 p_sys->i_dts_first = -1;
153 p_sys->i_dts_last = 0;
154 p_sys->i_bitrate = 0;
157 p_sys->b_write_header = VLC_TRUE;
159 p_sys->i_packet_size = 4096;
160 p_sys->i_packet_count= 0;
161 /* generate a random fid */
162 srand( mdate() & 0xffffffff );
163 p_sys->fid.v1 = 0xbabac001;
164 p_sys->fid.v2 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
165 p_sys->fid.v3 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
166 for( i = 0; i < 8; i++ )
168 p_sys->fid.v4[i] = ( (uint64_t)rand() << 8 ) / RAND_MAX;
175 /*****************************************************************************
177 *****************************************************************************/
178 static void Close( vlc_object_t * p_this )
180 sout_mux_t *p_mux = (sout_mux_t*)p_this;
181 sout_mux_sys_t *p_sys = p_mux->p_sys;
185 msg_Dbg( p_mux, "Asf muxer closed" );
187 if( ( out = asf_stream_end_create( p_mux ) ) )
189 sout_AccessOutWrite( p_mux->p_access, out );
193 if( !sout_AccessOutSeek( p_mux->p_access, 0 ) )
195 out = asf_header_create( p_mux, VLC_FALSE );
196 sout_AccessOutWrite( p_mux->p_access, out );
199 for( i = 1; i < p_sys->i_track; i++ )
201 free( p_sys->track[i].p_extra );
206 /*****************************************************************************
208 *****************************************************************************/
209 static int Capability( sout_mux_t *p_mux, int i_query,
210 void *p_args, void *p_answer )
214 case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
215 *(vlc_bool_t*)p_answer = VLC_FALSE;
216 return( SOUT_MUX_CAP_ERR_OK );
218 return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
222 /*****************************************************************************
224 *****************************************************************************/
225 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
227 sout_mux_sys_t *p_sys = p_mux->p_sys;
231 msg_Dbg( p_mux, "adding input" );
232 if( p_sys->i_track > 127 )
234 msg_Dbg( p_mux, "cannot add this track (too much track)" );
238 tk = p_input->p_sys = &p_sys->track[p_sys->i_track];
239 tk->i_id = p_sys->i_track;
240 tk->i_cat = p_input->p_fmt->i_cat;
247 int i_blockalign = p_input->p_fmt->i_block_align;
248 int i_bitspersample = 0;
251 switch( p_input->p_fmt->i_fourcc )
253 case VLC_FOURCC( 'a', '5', '2', ' ' ):
254 tk->i_tag = WAVE_FORMAT_A52;
255 tk->psz_name = "A/52";
257 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
259 tk->psz_name = "MPEG Audio Layer 3";
260 tk->i_tag = WAVE_FORMAT_MPEGLAYER3;
265 tk->psz_name = "MPEG Audio Layer 1/2";
266 tk->i_tag = WAVE_FORMAT_MPEG;
271 case VLC_FOURCC( 'w', 'm', 'a', '1' ):
272 tk->psz_name = "Windows Media Audio 1";
273 tk->i_tag = WAVE_FORMAT_WMA1;
275 case VLC_FOURCC( 'w', 'm', 'a', '2' ):
276 tk->psz_name = "Windows Media Audio 2";
277 tk->i_tag = WAVE_FORMAT_WMA2;
279 case VLC_FOURCC( 'w', 'm', 'a', '3' ):
280 tk->psz_name = "Windows Media Audio 3";
281 tk->i_tag = WAVE_FORMAT_WMA3;
284 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
285 tk->psz_name = "Raw audio 8bits";
286 tk->i_tag = WAVE_FORMAT_PCM;
287 i_blockalign= p_input->p_fmt->i_channels;
290 case VLC_FOURCC( 's', '1', '6', 'l' ):
291 tk->psz_name = "Raw audio 16bits";
292 tk->i_tag = WAVE_FORMAT_PCM;
293 i_blockalign= 2 * p_input->p_fmt->i_channels;
294 i_bitspersample = 16;
296 case VLC_FOURCC( 's', '2', '4', 'l' ):
297 tk->psz_name = "Raw audio 24bits";
298 tk->i_tag = WAVE_FORMAT_PCM;
299 i_blockalign= 3 * p_input->p_fmt->i_channels;
300 i_bitspersample = 24;
302 case VLC_FOURCC( 's', '3', '2', 'l' ):
303 tk->psz_name = "Raw audio 32bits";
304 tk->i_tag = WAVE_FORMAT_PCM;
305 i_blockalign= 4 * p_input->p_fmt->i_channels;
306 i_bitspersample = 32;
313 tk->i_extra = sizeof( WAVEFORMATEX ) +
314 p_input->p_fmt->i_extra_data + i_extra;
315 tk->p_extra = malloc( tk->i_extra );
316 bo_init( &bo, tk->p_extra, tk->i_extra );
317 bo_addle_u16( &bo, tk->i_tag );
318 bo_addle_u16( &bo, p_input->p_fmt->i_channels );
319 bo_addle_u32( &bo, p_input->p_fmt->i_sample_rate );
320 bo_addle_u32( &bo, p_input->p_fmt->i_bitrate / 8 );
321 bo_addle_u16( &bo, i_blockalign );
322 bo_addle_u16( &bo, i_bitspersample );
323 if( p_input->p_fmt->i_extra_data > 0 )
325 bo_addle_u16( &bo, p_input->p_fmt->i_extra_data );
326 bo_add_mem ( &bo, p_input->p_fmt->p_extra_data,
327 p_input->p_fmt->i_extra_data );
331 bo_addle_u16( &bo, i_extra );
332 if( tk->i_tag == WAVE_FORMAT_MPEGLAYER3 )
334 msg_Dbg( p_mux, "adding mp3 header" );
335 bo_addle_u16( &bo, 1 ); /* wId */
336 bo_addle_u32( &bo, 2 ); /* fdwFlags */
337 bo_addle_u16( &bo, 1152 ); /* nBlockSize */
338 bo_addle_u16( &bo, 1 ); /* nFramesPerBlock */
339 bo_addle_u16( &bo, 1393 ); /* nCodecDelay */
341 else if( tk->i_tag == WAVE_FORMAT_MPEG )
343 msg_Dbg( p_mux, "adding mp2 header" );
344 bo_addle_u16( &bo, 2 ); /* fwHeadLayer */
345 bo_addle_u32( &bo, p_input->p_fmt->i_bitrate );
346 bo_addle_u16( &bo, p_input->p_fmt->i_channels == 2 ?1:8 );
347 bo_addle_u16( &bo, 0 ); /* fwHeadModeExt */
348 bo_addle_u16( &bo, 1 ); /* wHeadEmphasis */
349 bo_addle_u16( &bo, 16 ); /* fwHeadFlags */
350 bo_addle_u32( &bo, 0 ); /* dwPTSLow */
351 bo_addle_u32( &bo, 0 ); /* dwPTSHigh */
355 if( p_input->p_fmt->i_bitrate > 24000 )
357 p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
361 p_sys->i_bitrate += 512000;
367 tk->i_extra = 11 + sizeof( BITMAPINFOHEADER ) +
368 p_input->p_fmt->i_extra_data;
369 tk->p_extra = malloc( tk->i_extra );
370 bo_init( &bo, tk->p_extra, tk->i_extra );
371 bo_addle_u32( &bo, p_input->p_fmt->i_width );
372 bo_addle_u32( &bo, p_input->p_fmt->i_height );
373 bo_add_u8 ( &bo, 0x02 ); /* flags */
374 bo_addle_u16( &bo, sizeof( BITMAPINFOHEADER ) +
375 p_input->p_fmt->i_extra_data );
376 bo_addle_u32( &bo, sizeof( BITMAPINFOHEADER ) +
377 p_input->p_fmt->i_extra_data );
378 bo_addle_u32( &bo, p_input->p_fmt->i_width );
379 bo_addle_u32( &bo, p_input->p_fmt->i_height );
380 bo_addle_u16( &bo, 1 );
381 bo_addle_u16( &bo, 24 );
382 if( p_input->p_fmt->i_fourcc == VLC_FOURCC('m','p','4','v') )
384 tk->psz_name = "MPEG-4 Video";
385 tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', 'S' );
387 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('D','I','V','3') )
389 tk->psz_name = "MSMPEG-4 V3 Video";
390 tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '3' );
392 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('D','I','V','2') )
394 tk->psz_name = "MSMPEG-4 V2 Video";
395 tk->i_fourcc = VLC_FOURCC( 'M', 'P', '4', '2' );
397 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('D','I','V','1') )
399 tk->psz_name = "MSMPEG-4 V1 Video";
400 tk->i_fourcc = VLC_FOURCC( 'M', 'P', 'G', '4' );
402 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('W','M','V','1') )
404 tk->psz_name = "Windows Media Video 1";
405 tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '1' );
407 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('W','M','V','2') )
409 tk->psz_name = "Windows Media Video 2";
410 tk->i_fourcc = VLC_FOURCC( 'W', 'M', 'V', '2' );
414 tk->psz_name = "Unknow Video";
415 tk->i_fourcc = p_input->p_fmt->i_fourcc;
417 bo_add_mem( &bo, (uint8_t*)&tk->i_fourcc, 4 );
418 bo_addle_u32( &bo, 0 );
419 bo_addle_u32( &bo, 0 );
420 bo_addle_u32( &bo, 0 );
421 bo_addle_u32( &bo, 0 );
422 bo_addle_u32( &bo, 0 );
423 if( p_input->p_fmt->i_extra_data > 0 )
425 bo_add_mem ( &bo, p_input->p_fmt->p_extra_data,
426 p_input->p_fmt->i_extra_data );
429 if( p_input->p_fmt->i_bitrate > 50000 )
431 p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
435 p_sys->i_bitrate += 1000000;
440 msg_Err(p_mux, "unhandled track type" );
448 /*****************************************************************************
450 *****************************************************************************/
451 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
453 msg_Dbg( p_mux, "removing input" );
457 /*****************************************************************************
459 *****************************************************************************/
460 static int Mux ( sout_mux_t *p_mux )
462 sout_mux_sys_t *p_sys = p_mux->p_sys;
464 if( p_sys->b_write_header )
466 sout_buffer_t *out = asf_header_create( p_mux, VLC_TRUE );
468 out->i_flags |= SOUT_BUFFER_FLAGS_HEADER;
469 sout_AccessOutWrite( p_mux->p_access, out );
471 p_sys->b_write_header = VLC_FALSE;
476 sout_input_t *p_input;
483 if( MuxGetStream( p_mux, &i_stream, &i_dts ) )
485 /* not enough data */
489 if( p_sys->i_dts_first < 0 )
491 p_sys->i_dts_first = i_dts;
493 if( p_sys->i_dts_last < i_dts )
495 p_sys->i_dts_last = i_dts;
498 p_input = p_mux->pp_inputs[i_stream];
499 tk = (asf_track_t*)p_input->p_sys;
501 data = sout_FifoGet( p_input->p_fifo );
503 if( ( pk = asf_packet_create( p_mux, tk, data ) ) )
505 sout_AccessOutWrite( p_mux->p_access, pk );
513 static int MuxGetStream( sout_mux_t *p_mux,
521 for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
523 sout_input_t *p_input = p_mux->pp_inputs[i];
524 sout_buffer_t *p_data;
526 if( p_input->p_fifo->i_depth <= 0 )
528 if( p_input->p_fmt->i_cat == AUDIO_ES ||
529 p_input->p_fmt->i_cat == VIDEO_ES )
531 /* We need that audio+video fifo contain at least 1 packet */
538 p_data = sout_FifoShow( p_input->p_fifo );
539 if( i_stream == -1 ||
540 p_data->i_dts < i_dts )
543 i_dts = p_data->i_dts;
547 *pi_stream = i_stream;
553 /****************************************************************************
554 * Asf header construction
555 ****************************************************************************/
557 /****************************************************************************
559 ****************************************************************************/
560 static void bo_init( bo_t *p_bo, uint8_t *p_buffer, int i_size )
562 p_bo->i_buffer_size = i_size;
564 p_bo->p_buffer = p_buffer;
566 static void bo_add_u8( bo_t *p_bo, uint8_t i )
568 if( p_bo->i_buffer < p_bo->i_buffer_size )
570 p_bo->p_buffer[p_bo->i_buffer] = i;
574 static void bo_addle_u16( bo_t *p_bo, uint16_t i )
576 bo_add_u8( p_bo, i &0xff );
577 bo_add_u8( p_bo, ( ( i >> 8) &0xff ) );
579 static void bo_addle_u32( bo_t *p_bo, uint32_t i )
581 bo_addle_u16( p_bo, i &0xffff );
582 bo_addle_u16( p_bo, ( ( i >> 16) &0xffff ) );
584 static void bo_addle_u64( bo_t *p_bo, uint64_t i )
586 bo_addle_u32( p_bo, i &0xffffffff );
587 bo_addle_u32( p_bo, ( ( i >> 32) &0xffffffff ) );
590 static void bo_add_mem( bo_t *p_bo, uint8_t *p_mem, int i_size )
592 int i_copy = __MIN( i_size, p_bo->i_buffer_size - p_bo->i_buffer );
596 memcpy( &p_bo->p_buffer[p_bo->i_buffer],
600 p_bo->i_buffer += i_size;
603 static void bo_addle_str16( bo_t *bo, char *str )
605 bo_addle_u16( bo, strlen( str ) + 1 );
611 bo_addle_u16( bo, c );
619 /****************************************************************************
621 ****************************************************************************/
622 static void bo_add_guid( bo_t *p_bo, const guid_t *id )
625 bo_addle_u32( p_bo, id->v1 );
626 bo_addle_u16( p_bo, id->v2 );
627 bo_addle_u16( p_bo, id->v3 );
628 for( i = 0; i < 8; i++ )
630 bo_add_u8( p_bo, id->v4[i] );
634 static const guid_t asf_object_header_guid =
639 { 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
641 static const guid_t asf_object_data_guid =
646 { 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
649 static const guid_t asf_object_file_properties_guid =
654 { 0x8e,0xe4, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
657 static const guid_t asf_object_stream_properties_guid =
662 { 0x8E,0xE6, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
665 static const guid_t asf_object_header_extention_guid =
670 { 0x8E,0xE3, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
673 static const guid_t asf_object_stream_type_audio =
678 { 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
681 static const guid_t asf_object_stream_type_video =
686 { 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
689 static const guid_t asf_guid_audio_conceal_none =
694 { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
696 static const guid_t asf_guid_video_conceal_none =
701 { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
703 static const guid_t asf_guid_reserved_1 =
708 { 0x8E, 0xE6,0x00, 0xC0, 0x0C ,0x20, 0x53, 0x65 }
710 static const guid_t asf_object_comment_guid =
715 { 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 }
717 static const guid_t asf_object_comment_reserved_guid =
722 { 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 }
725 static void asf_chunk_add( bo_t *bo,
726 int i_type, int i_len, int i_flags, int i_seq )
728 bo_addle_u16( bo, i_type );
729 bo_addle_u16( bo, i_len + 8 );
730 bo_addle_u32( bo, i_seq );
731 bo_addle_u16( bo, i_flags );
732 bo_addle_u16( bo, i_len + 8 );
735 static sout_buffer_t *asf_header_create( sout_mux_t *p_mux,
736 vlc_bool_t b_broadcast )
738 sout_mux_sys_t *p_sys = p_mux->p_sys;
741 mtime_t i_duration = 0;
748 if( p_sys->i_dts_first > 0 )
750 i_duration = p_sys->i_dts_last - p_sys->i_dts_first;
757 /* calculate header size */
758 i_size = 30 + 104 + 46;
760 for( i = 1; i < p_sys->i_track; i++ )
762 i_size += 78 + p_sys->track[i].i_extra;
763 i_ci_size += 8 + 2 * strlen( p_sys->track[i].psz_name );
764 if( p_sys->track[i].i_cat == AUDIO_ES )
768 else if( p_sys->track[i].i_cat == VIDEO_ES )
776 if( p_sys->b_asf_http )
778 out = sout_BufferNew( p_mux->p_sout, i_size + 50 + 12 );
779 bo_init( &bo, out->p_buffer, i_size + 50 + 12 );
780 asf_chunk_add( &bo, 0x4824, i_size + 50, 0xc00, p_sys->i_seq++ );
784 out = sout_BufferNew( p_mux->p_sout, i_size + 50 );
785 bo_init( &bo, out->p_buffer, i_size + 50 );
788 bo_add_guid ( &bo, &asf_object_header_guid );
789 bo_addle_u64( &bo, i_size );
790 bo_addle_u32( &bo, 2 + p_sys->i_track - 1 );
791 bo_add_u8 ( &bo, 1 );
792 bo_add_u8 ( &bo, 2 );
796 /* file properties */
797 bo_add_guid ( &bo, &asf_object_file_properties_guid );
798 bo_addle_u64( &bo, 104 );
799 bo_add_guid ( &bo, &p_sys->fid );
800 bo_addle_u64( &bo, i_size + 50 + p_sys->i_packet_count *
801 p_sys->i_packet_size ); /* file size */
802 bo_addle_u64( &bo, 0 ); /* creation date */
803 bo_addle_u64( &bo, b_broadcast ? 0xffffffffLL : p_sys->i_packet_count );
804 bo_addle_u64( &bo, i_duration * 10 ); /* play duration (100ns) */
805 bo_addle_u64( &bo, i_duration * 10 ); /* send duration (100ns) */
806 bo_addle_u64( &bo, 3000 ); /* preroll duration (ms) */
807 bo_addle_u32( &bo, b_broadcast ? 0x01 : 0x00); /* flags */
808 bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size min */
809 bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size max */
810 bo_addle_u32( &bo, p_sys->i_bitrate ); /* maxbitrate */
812 /* header extention */
813 bo_add_guid ( &bo, &asf_object_header_extention_guid );
814 bo_addle_u64( &bo, 46 );
815 bo_add_guid ( &bo, &asf_guid_reserved_1 );
816 bo_addle_u16( &bo, 6 );
817 bo_addle_u32( &bo, 0 );
819 /* stream properties */
820 for( i = 1; i < p_sys->i_track; i++ )
822 tk = &p_sys->track[i];
824 bo_add_guid ( &bo, &asf_object_stream_properties_guid );
825 bo_addle_u64( &bo, 78 + tk->i_extra );
826 if( tk->i_cat == AUDIO_ES )
828 bo_add_guid( &bo, &asf_object_stream_type_audio );
829 bo_add_guid( &bo, &asf_guid_audio_conceal_none );
831 else if( tk->i_cat == VIDEO_ES )
833 bo_add_guid( &bo, &asf_object_stream_type_video );
834 bo_add_guid( &bo, &asf_guid_video_conceal_none );
836 bo_addle_u64( &bo, 0 ); /* time offset */
837 bo_addle_u32( &bo, tk->i_extra );
838 bo_addle_u32( &bo, 0 ); /* 0 */
839 bo_addle_u16( &bo, tk->i_id ); /* stream number */
840 bo_addle_u32( &bo, 0 );
841 bo_add_mem ( &bo, tk->p_extra, tk->i_extra );
845 bo_add_guid ( &bo, &asf_object_comment_guid );
846 bo_addle_u64( &bo, i_ci_size );
847 bo_add_guid ( &bo, &asf_object_comment_reserved_guid );
848 bo_addle_u32( &bo, p_sys->i_track - 1 );
849 for( i = 1; i < p_sys->i_track; i++ )
851 tk = &p_sys->track[i];
853 bo_addle_u16( &bo, tk->i_id );
854 bo_addle_str16( &bo, tk->psz_name );
855 bo_addle_u16( &bo, 0 );
856 if( tk->i_cat == AUDIO_ES )
858 bo_addle_u16( &bo, 2 );
859 bo_addle_u16( &bo, tk->i_tag );
861 else if( tk->i_cat == VIDEO_ES )
863 bo_addle_u16( &bo, 4 );
864 bo_add_mem ( &bo, (uint8_t*)&tk->i_fourcc, 4 );
870 bo_add_guid ( &bo, &asf_object_data_guid );
871 bo_addle_u64( &bo, 50 + p_sys->i_packet_count * p_sys->i_packet_size );
872 bo_add_guid ( &bo, &p_sys->fid );
873 bo_addle_u64( &bo, p_sys->i_packet_count );
874 bo_addle_u16( &bo, 0x101 );
879 /****************************************************************************
881 ****************************************************************************/
882 static sout_buffer_t *asf_packet_create( sout_mux_t *p_mux,
883 asf_track_t *tk, sout_buffer_t *data )
885 sout_mux_sys_t *p_sys = p_mux->p_sys;
887 int i_data = data->i_size;
889 uint8_t *p_data= data->p_buffer;
890 sout_buffer_t *first = NULL, **last = &first;
891 int i_preheader = p_sys->b_asf_http ? 12 : 0;
893 while( i_pos < i_data )
898 if( p_sys->pk == NULL )
900 p_sys->pk = sout_BufferNew( p_mux->p_sout,
901 p_sys->i_packet_size + i_preheader);
902 /* reserve 14 bytes for the packet header */
903 p_sys->i_pk_used = 14 + i_preheader;
904 p_sys->i_pk_frame = 0;
905 p_sys->i_pk_dts = data->i_dts;
909 bo_init( &bo, &p_sys->pk->p_buffer[p_sys->i_pk_used],
910 p_sys->i_packet_size - p_sys->i_pk_used );
912 /* add payload (header size = 17) */
913 i_payload = __MIN( i_data - i_pos,
914 p_sys->i_packet_size - p_sys->i_pk_used - 17 );
915 bo_add_u8 ( &bo, 0x80 | tk->i_id );
916 bo_add_u8 ( &bo, tk->i_sequence );
917 bo_addle_u32( &bo, i_pos );
918 bo_add_u8 ( &bo, 0x08 ); /* flags */
919 bo_addle_u32( &bo, i_data );
920 bo_addle_u32( &bo, ( data->i_dts - p_sys->i_dts_first )/ 1000 );
921 bo_addle_u16( &bo, i_payload );
922 bo_add_mem ( &bo, &p_data[i_pos], i_payload );
924 p_sys->i_pk_used += 17 + i_payload;
928 if( p_sys->i_pk_used + 17 >= p_sys->i_packet_size )
930 /* not enough data for another payload, flush the packet */
931 int i_pad = p_sys->i_packet_size - p_sys->i_pk_used;
933 bo_init( &bo, p_sys->pk->p_buffer, 14 + i_preheader );
935 if( p_sys->b_asf_http )
937 asf_chunk_add( &bo, 0x4424,
938 p_sys->i_packet_size, 0x00, p_sys->i_seq++);
940 bo_add_u8 ( &bo, 0x82 );
941 bo_addle_u16( &bo, 0 );
942 bo_add_u8( &bo, 0x11 );
943 bo_add_u8( &bo, 0x5d );
944 bo_addle_u16( &bo, i_pad );
945 bo_addle_u32( &bo, ( p_sys->i_pk_dts - p_sys->i_dts_first )/ 1000 );
946 bo_addle_u16( &bo, 0 * data->i_length / 1000 );
947 bo_add_u8( &bo, 0x80 | p_sys->i_pk_frame );
949 /* append the packet */
951 last = &p_sys->pk->p_next;
955 p_sys->i_packet_count++;
960 sout_BufferDelete( p_mux->p_sout, data );
965 static sout_buffer_t *asf_stream_end_create( sout_mux_t *p_mux )
967 sout_mux_sys_t *p_sys = p_mux->p_sys;
969 sout_buffer_t *out = NULL;
972 if( p_sys->b_asf_http )
974 out = sout_BufferNew( p_mux->p_sout, 12 );
975 bo_init( &bo, out->p_buffer, 12 );
976 asf_chunk_add( &bo, 0x4524, 0, 0x00, p_sys->i_seq++ );