1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 VideoLAN
5 * $Id: asf.c,v 1.5 2003/08/26 23:14:11 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 * );
77 guid_t fid; /* file id */
79 int64_t i_packet_count;
85 asf_track_t track[128];
87 vlc_bool_t b_write_header;
94 vlc_bool_t b_asf_http;
98 static int MuxGetStream( sout_mux_t *, int *pi_stream, mtime_t *pi_dts );
100 static sout_buffer_t *asf_header_create( sout_mux_t *, vlc_bool_t b_broadcast );
101 static sout_buffer_t *asf_packet_create( sout_mux_t *,
102 asf_track_t *, sout_buffer_t * );
103 static sout_buffer_t *asf_stream_end_create( sout_mux_t *);
112 static void bo_init ( bo_t *, uint8_t *, int );
113 static void bo_add_u8 ( bo_t *, uint8_t );
114 static void bo_addle_u16( bo_t *, uint16_t );
115 static void bo_addle_u32( bo_t *, uint32_t );
116 static void bo_addle_u64( bo_t *, uint64_t );
117 static void bo_add_mem ( bo_t *, uint8_t *, int );
120 /*****************************************************************************
122 *****************************************************************************/
123 static int Open( vlc_object_t *p_this )
125 sout_mux_t *p_mux = (sout_mux_t*)p_this;
126 sout_mux_sys_t *p_sys;
129 msg_Dbg( p_mux, "Asf muxer opened" );
131 p_mux->pf_capacity = Capability;
132 p_mux->pf_addstream = AddStream;
133 p_mux->pf_delstream = DelStream;
136 p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
137 p_sys->b_asf_http = p_mux->psz_mux && !strcmp( p_mux->psz_mux, "asfh" );
138 if( p_sys->b_asf_http )
140 msg_Dbg( p_mux, "creating asf stream to be used with mmsh" );
143 p_sys->i_pk_used = 0;
144 p_sys->i_pk_frame = 0;
145 p_sys->i_dts_first = -1;
146 p_sys->i_dts_last = 0;
147 p_sys->i_bitrate = 0;
150 p_sys->b_write_header = VLC_TRUE;
152 p_sys->i_packet_size = 4096;
153 p_sys->i_packet_count= 0;
154 /* generate a random fid */
155 srand( mdate() & 0xffffffff );
156 p_sys->fid.v1 = 0xbabac001;
157 p_sys->fid.v2 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
158 p_sys->fid.v3 = ( (uint64_t)rand() << 16 ) / RAND_MAX;
159 for( i = 0; i < 8; i++ )
161 p_sys->fid.v4[i] = ( (uint64_t)rand() << 8 ) / RAND_MAX;
168 /*****************************************************************************
170 *****************************************************************************/
171 static void Close( vlc_object_t * p_this )
173 sout_mux_t *p_mux = (sout_mux_t*)p_this;
174 sout_mux_sys_t *p_sys = p_mux->p_sys;
178 msg_Dbg( p_mux, "Asf muxer closed" );
180 if( ( out = asf_stream_end_create( p_mux ) ) )
182 sout_AccessOutWrite( p_mux->p_access, out );
186 if( !sout_AccessOutSeek( p_mux->p_access, 0 ) )
188 out = asf_header_create( p_mux, VLC_FALSE );
189 sout_AccessOutWrite( p_mux->p_access, out );
192 for( i = 1; i < p_sys->i_track; i++ )
194 free( p_sys->track[i].p_extra );
199 /*****************************************************************************
201 *****************************************************************************/
202 static int Capability( sout_mux_t *p_mux, int i_query,
203 void *p_args, void *p_answer )
207 case SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:
208 *(vlc_bool_t*)p_answer = VLC_FALSE;
209 return( SOUT_MUX_CAP_ERR_OK );
211 return( SOUT_MUX_CAP_ERR_UNIMPLEMENTED );
215 /*****************************************************************************
217 *****************************************************************************/
218 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
220 sout_mux_sys_t *p_sys = p_mux->p_sys;
224 msg_Dbg( p_mux, "adding input" );
225 if( p_sys->i_track > 127 )
227 msg_Dbg( p_mux, "cannot add this track (too much track)" );
231 tk = p_input->p_sys = &p_sys->track[p_sys->i_track];
232 tk->i_id = p_sys->i_track;
233 tk->i_cat = p_input->p_fmt->i_cat;
241 int i_blockalign = p_input->p_fmt->i_block_align;
242 int i_bitspersample = 0;
245 switch( p_input->p_fmt->i_fourcc )
247 case VLC_FOURCC( 'a', '5', '2', ' ' ):
248 i_tag = WAVE_FORMAT_A52;
250 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
252 i_tag = WAVE_FORMAT_MPEGLAYER3;
257 i_tag = WAVE_FORMAT_MPEG;
262 case VLC_FOURCC( 'w', 'm', 'a', '1' ):
263 i_tag = WAVE_FORMAT_WMA1;
265 case VLC_FOURCC( 'w', 'm', 'a', '2' ):
266 i_tag = WAVE_FORMAT_WMA2;
268 case VLC_FOURCC( 'w', 'm', 'a', '3' ):
269 i_tag = WAVE_FORMAT_WMA3;
272 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
273 i_tag = WAVE_FORMAT_PCM;
274 i_blockalign= p_input->p_fmt->i_channels;
277 case VLC_FOURCC( 's', '1', '6', 'l' ):
278 i_tag = WAVE_FORMAT_PCM;
279 i_blockalign= 2 * p_input->p_fmt->i_channels;
280 i_bitspersample = 16;
282 case VLC_FOURCC( 's', '2', '4', 'l' ):
283 i_tag = WAVE_FORMAT_PCM;
284 i_blockalign= 3 * p_input->p_fmt->i_channels;
285 i_bitspersample = 24;
287 case VLC_FOURCC( 's', '3', '2', 'l' ):
288 i_tag = WAVE_FORMAT_PCM;
289 i_blockalign= 4 * p_input->p_fmt->i_channels;
290 i_bitspersample = 32;
296 tk->i_extra = sizeof( WAVEFORMATEX ) +
297 p_input->p_fmt->i_extra_data + i_extra;
298 tk->p_extra = malloc( tk->i_extra );
299 bo_init( &bo, tk->p_extra, tk->i_extra );
300 bo_addle_u16( &bo, i_tag );
301 bo_addle_u16( &bo, p_input->p_fmt->i_channels );
302 bo_addle_u32( &bo, p_input->p_fmt->i_sample_rate );
303 bo_addle_u32( &bo, p_input->p_fmt->i_bitrate / 8 );
304 bo_addle_u16( &bo, i_blockalign );
305 bo_addle_u16( &bo, i_bitspersample );
306 if( p_input->p_fmt->i_extra_data > 0 )
308 bo_addle_u16( &bo, p_input->p_fmt->i_extra_data );
309 bo_add_mem ( &bo, p_input->p_fmt->p_extra_data,
310 p_input->p_fmt->i_extra_data );
314 bo_addle_u16( &bo, i_extra );
315 if( i_tag == WAVE_FORMAT_MPEGLAYER3 )
317 msg_Dbg( p_mux, "adding mp3 header" );
318 bo_addle_u16( &bo, 1 ); /* wId */
319 bo_addle_u32( &bo, 2 ); /* fdwFlags */
320 bo_addle_u16( &bo, 1152 ); /* nBlockSize */
321 bo_addle_u16( &bo, 1 ); /* nFramesPerBlock */
322 bo_addle_u16( &bo, 1393 ); /* nCodecDelay */
324 else if( i_tag == WAVE_FORMAT_MPEG )
326 msg_Dbg( p_mux, "adding mp2 header" );
327 bo_addle_u16( &bo, 2 ); /* fwHeadLayer */
328 bo_addle_u32( &bo, p_input->p_fmt->i_bitrate );
329 bo_addle_u16( &bo, p_input->p_fmt->i_channels == 2 ?1:8 );
330 bo_addle_u16( &bo, 0 ); /* fwHeadModeExt */
331 bo_addle_u16( &bo, 1 ); /* wHeadEmphasis */
332 bo_addle_u16( &bo, 16 ); /* fwHeadFlags */
333 bo_addle_u32( &bo, 0 ); /* dwPTSLow */
334 bo_addle_u32( &bo, 0 ); /* dwPTSHigh */
338 if( p_input->p_fmt->i_bitrate > 24000 )
340 p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
344 p_sys->i_bitrate += 512000;
350 tk->i_extra = 11 + sizeof( BITMAPINFOHEADER ) +
351 p_input->p_fmt->i_extra_data;
352 tk->p_extra = malloc( tk->i_extra );
353 bo_init( &bo, tk->p_extra, tk->i_extra );
354 bo_addle_u32( &bo, p_input->p_fmt->i_width );
355 bo_addle_u32( &bo, p_input->p_fmt->i_height );
356 bo_add_u8 ( &bo, 0x02 ); /* flags */
357 bo_addle_u16( &bo, sizeof( BITMAPINFOHEADER ) +
358 p_input->p_fmt->i_extra_data );
359 bo_addle_u32( &bo, sizeof( BITMAPINFOHEADER ) +
360 p_input->p_fmt->i_extra_data );
361 bo_addle_u32( &bo, p_input->p_fmt->i_width );
362 bo_addle_u32( &bo, p_input->p_fmt->i_height );
363 bo_addle_u16( &bo, 1 );
364 bo_addle_u16( &bo, 24 );
365 if( p_input->p_fmt->i_fourcc == VLC_FOURCC('m','p','4','v') )
367 bo_add_mem( &bo, "MP4S", 4 );
369 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('D','I','V','3') )
371 bo_add_mem( &bo, "MP43", 4 );
373 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('D','I','V','2') )
375 bo_add_mem( &bo, "MP42", 4 );
377 else if( p_input->p_fmt->i_fourcc == VLC_FOURCC('D','I','V','1') )
379 bo_add_mem( &bo, "MPG4", 4 );
383 bo_add_mem( &bo, (uint8_t*)&p_input->p_fmt->i_fourcc, 4 );
385 bo_addle_u32( &bo, 0 );
386 bo_addle_u32( &bo, 0 );
387 bo_addle_u32( &bo, 0 );
388 bo_addle_u32( &bo, 0 );
389 bo_addle_u32( &bo, 0 );
390 if( p_input->p_fmt->i_extra_data > 0 )
392 bo_add_mem ( &bo, p_input->p_fmt->p_extra_data,
393 p_input->p_fmt->i_extra_data );
396 if( p_input->p_fmt->i_bitrate > 50000 )
398 p_sys->i_bitrate += p_input->p_fmt->i_bitrate;
402 p_sys->i_bitrate += 1000000;
407 msg_Err(p_mux, "unhandled track type" );
415 /*****************************************************************************
417 *****************************************************************************/
418 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
420 msg_Dbg( p_mux, "removing input" );
424 /*****************************************************************************
426 *****************************************************************************/
427 static int Mux ( sout_mux_t *p_mux )
429 sout_mux_sys_t *p_sys = p_mux->p_sys;
431 if( p_sys->b_write_header )
433 sout_buffer_t *out = asf_header_create( p_mux, VLC_TRUE );
435 out->i_flags |= SOUT_BUFFER_FLAGS_HEADER;
436 sout_AccessOutWrite( p_mux->p_access, out );
438 p_sys->b_write_header = VLC_FALSE;
443 sout_input_t *p_input;
450 if( MuxGetStream( p_mux, &i_stream, &i_dts ) )
452 /* not enough data */
456 if( p_sys->i_dts_first < 0 )
458 p_sys->i_dts_first = i_dts;
460 if( p_sys->i_dts_last < i_dts )
462 p_sys->i_dts_last = i_dts;
465 p_input = p_mux->pp_inputs[i_stream];
466 tk = (asf_track_t*)p_input->p_sys;
468 data = sout_FifoGet( p_input->p_fifo );
470 if( ( pk = asf_packet_create( p_mux, tk, data ) ) )
472 sout_AccessOutWrite( p_mux->p_access, pk );
480 static int MuxGetStream( sout_mux_t *p_mux,
488 for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
490 sout_input_t *p_input = p_mux->pp_inputs[i];
491 sout_buffer_t *p_data;
493 if( p_input->p_fifo->i_depth <= 0 )
495 if( p_input->p_fmt->i_cat == AUDIO_ES ||
496 p_input->p_fmt->i_cat == VIDEO_ES )
498 /* We need that audio+video fifo contain at least 1 packet */
505 p_data = sout_FifoShow( p_input->p_fifo );
506 if( i_stream == -1 ||
507 p_data->i_dts < i_dts )
510 i_dts = p_data->i_dts;
514 *pi_stream = i_stream;
520 /****************************************************************************
521 * Asf header construction
522 ****************************************************************************/
524 /****************************************************************************
526 ****************************************************************************/
527 static void bo_init( bo_t *p_bo, uint8_t *p_buffer, int i_size )
529 p_bo->i_buffer_size = i_size;
531 p_bo->p_buffer = p_buffer;
533 static void bo_add_u8( bo_t *p_bo, uint8_t i )
535 if( p_bo->i_buffer < p_bo->i_buffer_size )
537 p_bo->p_buffer[p_bo->i_buffer] = i;
541 static void bo_addle_u16( bo_t *p_bo, uint16_t i )
543 bo_add_u8( p_bo, i &0xff );
544 bo_add_u8( p_bo, ( ( i >> 8) &0xff ) );
546 static void bo_addle_u32( bo_t *p_bo, uint32_t i )
548 bo_addle_u16( p_bo, i &0xffff );
549 bo_addle_u16( p_bo, ( ( i >> 16) &0xffff ) );
551 static void bo_addle_u64( bo_t *p_bo, uint64_t i )
553 bo_addle_u32( p_bo, i &0xffffffff );
554 bo_addle_u32( p_bo, ( ( i >> 32) &0xffffffff ) );
557 static void bo_add_mem( bo_t *p_bo, uint8_t *p_mem, int i_size )
559 int i_copy = __MIN( i_size, p_bo->i_buffer_size - p_bo->i_buffer );
563 memcpy( &p_bo->p_buffer[p_bo->i_buffer],
567 p_bo->i_buffer += i_size;
570 /****************************************************************************
572 ****************************************************************************/
573 static void bo_add_guid( bo_t *p_bo, const guid_t *id )
576 bo_addle_u32( p_bo, id->v1 );
577 bo_addle_u16( p_bo, id->v2 );
578 bo_addle_u16( p_bo, id->v3 );
579 for( i = 0; i < 8; i++ )
581 bo_add_u8( p_bo, id->v4[i] );
585 static const guid_t asf_object_header_guid =
590 { 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
592 static const guid_t asf_object_data_guid =
597 { 0xA6,0xD9, 0x00,0xAA,0x00,0x62,0xCE,0x6C }
600 static const guid_t asf_object_file_properties_guid =
605 { 0x8e,0xe4, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
608 static const guid_t asf_object_stream_properties_guid =
613 { 0x8E,0xE6, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
616 static const guid_t asf_object_header_extention_guid =
621 { 0x8E,0xE3, 0x00,0xC0,0x0C,0x20,0x53,0x65 }
624 static const guid_t asf_object_stream_type_audio =
629 { 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
632 static const guid_t asf_object_stream_type_video =
637 { 0xA8,0xFD, 0x00,0x80,0x5F,0x5C,0x44,0x2B }
640 static const guid_t asf_guid_audio_conceal_none =
645 { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
647 static const guid_t asf_guid_video_conceal_none =
652 { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }
654 static const guid_t asf_guid_reserved_1 =
659 { 0x8E, 0xE6,0x00, 0xC0, 0x0C ,0x20, 0x53, 0x65 }
662 static void asf_chunk_add( bo_t *bo,
663 int i_type, int i_len, int i_flags, int i_seq )
665 bo_addle_u16( bo, i_type );
666 bo_addle_u16( bo, i_len + 8 );
667 bo_addle_u32( bo, i_seq );
668 bo_addle_u16( bo, i_flags );
669 bo_addle_u16( bo, i_len + 8 );
672 static sout_buffer_t *asf_header_create( sout_mux_t *p_mux,
673 vlc_bool_t b_broadcast )
675 sout_mux_sys_t *p_sys = p_mux->p_sys;
678 mtime_t i_duration = 0;
684 if( p_sys->i_dts_first > 0 )
686 i_duration = p_sys->i_dts_last - p_sys->i_dts_first;
693 /* calculate header size */
694 i_size = 30 + 104 + 46;
695 for( i = 1; i < p_sys->i_track; i++ )
697 i_size += 78 + p_sys->track[i].i_extra;
700 if( p_sys->b_asf_http )
702 out = sout_BufferNew( p_mux->p_sout, i_size + 50 + 12 );
703 bo_init( &bo, out->p_buffer, i_size + 50 + 12 );
704 asf_chunk_add( &bo, 0x4824, i_size + 50, 0xc00, p_sys->i_seq++ );
708 out = sout_BufferNew( p_mux->p_sout, i_size + 50 );
709 bo_init( &bo, out->p_buffer, i_size + 50 );
712 bo_add_guid ( &bo, &asf_object_header_guid );
713 bo_addle_u64( &bo, i_size );
714 bo_addle_u32( &bo, 2 + p_sys->i_track - 1 );
715 bo_add_u8 ( &bo, 1 );
716 bo_add_u8 ( &bo, 2 );
720 /* file properties */
721 bo_add_guid ( &bo, &asf_object_file_properties_guid );
722 bo_addle_u64( &bo, 104 );
723 bo_add_guid ( &bo, &p_sys->fid );
724 bo_addle_u64( &bo, i_size + 50 + p_sys->i_packet_count *
725 p_sys->i_packet_size ); /* file size */
726 bo_addle_u64( &bo, 0 ); /* creation date */
727 bo_addle_u64( &bo, b_broadcast ? 0xffffffffLL : p_sys->i_packet_count );
728 bo_addle_u64( &bo, i_duration * 10 ); /* play duration (100ns) */
729 bo_addle_u64( &bo, i_duration * 10 ); /* send duration (100ns) */
730 bo_addle_u64( &bo, 3000 ); /* preroll duration (ms) */
731 bo_addle_u32( &bo, b_broadcast ? 0x01 : 0x00); /* flags */
732 bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size min */
733 bo_addle_u32( &bo, p_sys->i_packet_size ); /* packet size max */
734 bo_addle_u32( &bo, p_sys->i_bitrate ); /* maxbitrate */
736 /* header extention */
737 bo_add_guid ( &bo, &asf_object_header_extention_guid );
738 bo_addle_u64( &bo, 46 );
739 bo_add_guid ( &bo, &asf_guid_reserved_1 );
740 bo_addle_u16( &bo, 6 );
741 bo_addle_u32( &bo, 0 );
743 /* stream properties */
744 for( i = 1; i < p_sys->i_track; i++ )
746 tk = &p_sys->track[i];
748 bo_add_guid ( &bo, &asf_object_stream_properties_guid );
749 bo_addle_u64( &bo, 78 + tk->i_extra );
750 if( tk->i_cat == AUDIO_ES )
752 bo_add_guid( &bo, &asf_object_stream_type_audio );
753 bo_add_guid( &bo, &asf_guid_audio_conceal_none );
755 else if( tk->i_cat == VIDEO_ES )
757 bo_add_guid( &bo, &asf_object_stream_type_video );
758 bo_add_guid( &bo, &asf_guid_video_conceal_none );
760 bo_addle_u64( &bo, 0 ); /* time offset */
761 bo_addle_u32( &bo, tk->i_extra );
762 bo_addle_u32( &bo, 0 ); /* 0 */
763 bo_addle_u16( &bo, tk->i_id ); /* stream number */
764 bo_addle_u32( &bo, 0 );
765 bo_add_mem ( &bo, tk->p_extra, tk->i_extra );
769 bo_add_guid ( &bo, &asf_object_data_guid );
770 bo_addle_u64( &bo, 50 + p_sys->i_packet_count * p_sys->i_packet_size );
771 bo_add_guid ( &bo, &p_sys->fid );
772 bo_addle_u64( &bo, p_sys->i_packet_count );
773 bo_addle_u16( &bo, 0x101 );
778 /****************************************************************************
780 ****************************************************************************/
781 static sout_buffer_t *asf_packet_create( sout_mux_t *p_mux,
782 asf_track_t *tk, sout_buffer_t *data )
784 sout_mux_sys_t *p_sys = p_mux->p_sys;
786 int i_data = data->i_size;
788 uint8_t *p_data= data->p_buffer;
789 sout_buffer_t *first = NULL, **last = &first;
790 int i_preheader = p_sys->b_asf_http ? 12 : 0;
792 while( i_pos < i_data )
797 if( p_sys->pk == NULL )
799 p_sys->pk = sout_BufferNew( p_mux->p_sout,
800 p_sys->i_packet_size + i_preheader);
801 /* reserve 14 bytes for the packet header */
802 p_sys->i_pk_used = 14 + i_preheader;
803 p_sys->i_pk_frame = 0;
804 p_sys->i_pk_dts = data->i_dts;
808 bo_init( &bo, &p_sys->pk->p_buffer[p_sys->i_pk_used],
809 p_sys->i_packet_size - p_sys->i_pk_used );
811 /* add payload (header size = 17) */
812 i_payload = __MIN( i_data - i_pos,
813 p_sys->i_packet_size - p_sys->i_pk_used - 17 );
814 bo_add_u8 ( &bo, 0x80 | tk->i_id );
815 bo_add_u8 ( &bo, tk->i_sequence );
816 bo_addle_u32( &bo, i_pos );
817 bo_add_u8 ( &bo, 0x08 ); /* flags */
818 bo_addle_u32( &bo, i_data );
819 bo_addle_u32( &bo, ( data->i_dts - p_sys->i_dts_first )/ 1000 );
820 bo_addle_u16( &bo, i_payload );
821 bo_add_mem ( &bo, &p_data[i_pos], i_payload );
823 p_sys->i_pk_used += 17 + i_payload;
827 if( p_sys->i_pk_used + 14 >= p_sys->i_packet_size )
829 /* not enough data for another payload, flush the packet */
830 int i_pad = p_sys->i_packet_size - p_sys->i_pk_used;
832 bo_init( &bo, p_sys->pk->p_buffer, 14 + i_preheader );
834 if( p_sys->b_asf_http )
836 asf_chunk_add( &bo, 0x4424,
837 p_sys->i_packet_size, 0x00, p_sys->i_seq++);
839 bo_add_u8 ( &bo, 0x82 );
840 bo_addle_u16( &bo, 0 );
841 bo_add_u8( &bo, 0x11 );
842 bo_add_u8( &bo, 0x5d );
843 bo_addle_u16( &bo, i_pad );
844 bo_addle_u32( &bo, ( p_sys->i_pk_dts - p_sys->i_dts_first )/ 1000 );
845 bo_addle_u16( &bo, 0 * data->i_length / 1000 );
846 bo_add_u8( &bo, 0x80 | p_sys->i_pk_frame );
848 /* append the packet */
850 last = &p_sys->pk->p_next;
854 p_sys->i_packet_count++;
859 sout_BufferDelete( p_mux->p_sout, data );
864 static sout_buffer_t *asf_stream_end_create( sout_mux_t *p_mux )
866 sout_mux_sys_t *p_sys = p_mux->p_sys;
868 sout_buffer_t *out = NULL;
871 if( p_sys->b_asf_http )
873 out = sout_BufferNew( p_mux->p_sout, 12 );
874 bo_init( &bo, out->p_buffer, 12 );
875 asf_chunk_add( &bo, 0x4524, 0, 0x00, p_sys->i_seq++ );