1 /*****************************************************************************
2 * ogg.c: ogg muxer module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001, 2002, 2006 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
37 #include <vlc_common.h>
38 #include <vlc_plugin.h>
40 #include <vlc_block.h>
41 #include <vlc_codecs.h>
45 /*****************************************************************************
47 *****************************************************************************/
48 static int Open ( vlc_object_t * );
49 static void Close ( vlc_object_t * );
52 set_description( N_("Ogg/OGM muxer") )
53 set_capability( "sout mux", 10 )
54 set_category( CAT_SOUT )
55 set_subcategory( SUBCAT_SOUT_MUX )
58 set_callbacks( Open, Close )
62 /*****************************************************************************
64 *****************************************************************************/
65 static int Control ( sout_mux_t *, int, va_list );
66 static int AddStream( sout_mux_t *, sout_input_t * );
67 static int DelStream( sout_mux_t *, sout_input_t * );
68 static int Mux ( sout_mux_t * );
69 static int MuxBlock ( sout_mux_t *, sout_input_t * );
71 static block_t *OggCreateHeader( sout_mux_t * );
72 static block_t *OggCreateFooter( sout_mux_t * );
74 /*****************************************************************************
76 *****************************************************************************/
78 /* Structures used for OggDS headers used in ogm files */
80 #define PACKET_TYPE_HEADER 0x01
81 #define PACKET_TYPE_COMMENT 0x03
82 #define PACKET_IS_SYNCPOINT 0x08
85 #ifdef HAVE_ATTRIBUTE_PACKED
86 __attribute__((__packed__))
91 } oggds_header_video_t;
94 #ifdef HAVE_ATTRIBUTE_PACKED
95 __attribute__((__packed__))
99 int16_t i_block_align;
100 int32_t i_avgbytespersec;
101 } oggds_header_audio_t;
104 #ifdef HAVE_ATTRIBUTE_PACKED
105 __attribute__((__packed__))
108 uint8_t i_packet_type;
116 int64_t i_samples_per_unit;
117 int32_t i_default_len;
119 int32_t i_buffer_size;
120 int16_t i_bits_per_sample;
122 int16_t i_padding_0; /* Because the original is using MSVC packing style */
126 oggds_header_video_t video;
127 oggds_header_audio_t audio;
130 int32_t i_padding_1; /* Because the original is using MSVC packing style */
135 * TODO move this function to src/stream_output.c (used by nearly all muxers)
137 static int MuxGetStream( sout_mux_t *p_mux, int *pi_stream, mtime_t *pi_dts )
142 for( i = 0, i_dts = 0, i_stream = -1; i < p_mux->i_nb_inputs; i++ )
144 block_fifo_t *p_fifo;
146 p_fifo = p_mux->pp_inputs[i]->p_fifo;
148 /* We don't really need to have anything in the SPU fifo */
149 if( p_mux->pp_inputs[i]->p_fmt->i_cat == SPU_ES &&
150 block_FifoCount( p_fifo ) == 0 ) continue;
152 if( block_FifoCount( p_fifo ) )
156 p_buf = block_FifoShow( p_fifo );
157 if( i_stream < 0 || p_buf->i_dts < i_dts )
159 i_dts = p_buf->i_dts;
166 if( pi_stream ) *pi_stream = i_stream;
167 if( pi_dts ) *pi_dts = i_dts;
171 /*****************************************************************************
172 * Definitions of structures and functions used by this plugins
173 *****************************************************************************/
185 int i_keyframe_granule_shift; /* Theora only */
186 int i_last_keyframe; /* dirac and eventually theora */
189 oggds_header_t *p_oggds_header;
193 struct sout_mux_sys_t
198 int i_next_serial_no;
200 /* number of logical streams pending to be added */
203 /* logical streams pending to be deleted */
205 ogg_stream_t **pp_del_streams;
208 static void OggSetDate( block_t *, mtime_t , mtime_t );
209 static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
211 /*****************************************************************************
213 *****************************************************************************/
214 static int Open( vlc_object_t *p_this )
216 sout_mux_t *p_mux = (sout_mux_t*)p_this;
217 sout_mux_sys_t *p_sys;
219 msg_Info( p_mux, "Open" );
221 p_sys = malloc( sizeof( sout_mux_sys_t ) );
224 p_sys->i_streams = 0;
225 p_sys->i_add_streams = 0;
226 p_sys->i_del_streams = 0;
227 p_sys->pp_del_streams = 0;
229 p_mux->p_sys = p_sys;
230 p_mux->pf_control = Control;
231 p_mux->pf_addstream = AddStream;
232 p_mux->pf_delstream = DelStream;
235 /* First serial number is random.
236 * (Done like this because on win32 you need to seed the random number
237 * generator once per thread). */
238 srand( (unsigned int)time( NULL ) );
239 p_sys->i_next_serial_no = rand();
244 /*****************************************************************************
245 * Close: Finalize ogg bitstream and close muxer
246 *****************************************************************************/
247 static void Close( vlc_object_t * p_this )
249 sout_mux_t *p_mux = (sout_mux_t*)p_this;
250 sout_mux_sys_t *p_sys = p_mux->p_sys;
252 msg_Info( p_mux, "Close" );
254 if( p_sys->i_del_streams )
256 block_t *p_og = NULL;
260 /* Close the current ogg stream */
261 msg_Dbg( p_mux, "writing footer" );
262 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
264 /* Remove deleted logical streams */
265 for( i = 0; i < p_sys->i_del_streams; i++ )
267 i_dts = p_sys->pp_del_streams[i]->i_dts;
268 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
269 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
270 FREENULL( p_sys->pp_del_streams[i] );
272 FREENULL( p_sys->pp_del_streams );
273 p_sys->i_streams -= p_sys->i_del_streams;
276 OggSetDate( p_og, i_dts, 0 );
277 sout_AccessOutWrite( p_mux->p_access, p_og );
283 /*****************************************************************************
285 *****************************************************************************/
286 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
294 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
295 pb_bool = (bool*)va_arg( args, bool * );
299 case MUX_GET_ADD_STREAM_WAIT:
300 pb_bool = (bool*)va_arg( args, bool * );
305 ppsz = (char**)va_arg( args, char ** );
306 *ppsz = strdup( "application/ogg" );
313 /*****************************************************************************
314 * AddStream: Add an elementary stream to the muxed stream
315 *****************************************************************************/
316 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
318 sout_mux_sys_t *p_sys = p_mux->p_sys;
319 ogg_stream_t *p_stream;
322 msg_Dbg( p_mux, "adding input" );
324 p_input->p_sys = p_stream = calloc( 1, sizeof( ogg_stream_t ) );
328 p_stream->i_cat = p_input->p_fmt->i_cat;
329 p_stream->i_fourcc = p_input->p_fmt->i_codec;
330 p_stream->i_serial_no = p_sys->i_next_serial_no++;
331 p_stream->i_packet_no = 0;
333 p_stream->p_oggds_header = 0;
335 switch( p_input->p_fmt->i_cat )
338 if( !p_input->p_fmt->video.i_frame_rate ||
339 !p_input->p_fmt->video.i_frame_rate_base )
341 msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
342 p_input->p_fmt->video.i_frame_rate = 25;
343 p_input->p_fmt->video.i_frame_rate_base = 1;
346 switch( p_stream->i_fourcc )
348 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
349 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
350 case VLC_FOURCC( 'D', 'I', 'V', '3' ):
351 case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
352 case VLC_FOURCC( 'W', 'M', 'V', '1' ):
353 case VLC_FOURCC( 'W', 'M', 'V', '2' ):
354 case VLC_FOURCC( 'W', 'M', 'V', '3' ):
355 case VLC_FOURCC( 'S', 'N', 'O', 'W' ):
356 p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
357 if( !p_stream->p_oggds_header )
362 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
363 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
365 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
366 if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) )
368 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
370 else if( p_stream->i_fourcc == VLC_FOURCC( 'D', 'I', 'V', '3' ) )
372 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
376 memcpy( p_stream->p_oggds_header->sub_type,
377 &p_stream->i_fourcc, 4 );
379 SetDWLE( &p_stream->p_oggds_header->i_size,
380 sizeof( oggds_header_t ) - 1 );
381 SetQWLE( &p_stream->p_oggds_header->i_time_unit,
382 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
383 (int64_t)p_input->p_fmt->video.i_frame_rate );
384 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit, 1 );
385 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 ); /* ??? */
386 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 1024*1024 );
387 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample, 0 );
388 SetDWLE( &p_stream->p_oggds_header->header.video.i_width,
389 p_input->p_fmt->video.i_width );
390 SetDWLE( &p_stream->p_oggds_header->header.video.i_height,
391 p_input->p_fmt->video.i_height );
392 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
395 case VLC_FOURCC( 'd', 'r', 'a', 'c' ):
396 msg_Dbg( p_mux, "dirac stream" );
399 case VLC_FOURCC( 't', 'h', 'e', 'o' ):
400 msg_Dbg( p_mux, "theora stream" );
404 FREENULL( p_input->p_sys );
410 switch( p_stream->i_fourcc )
412 case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
413 msg_Dbg( p_mux, "vorbis stream" );
416 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
417 msg_Dbg( p_mux, "speex stream" );
420 case VLC_FOURCC( 'f', 'l', 'a', 'c' ):
421 msg_Dbg( p_mux, "flac stream" );
425 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
426 if( i_tag == WAVE_FORMAT_UNKNOWN )
428 FREENULL( p_input->p_sys );
432 p_stream->p_oggds_header =
433 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
434 if( !p_stream->p_oggds_header )
439 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
440 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
442 SetDWLE( &p_stream->p_oggds_header->i_size,
443 sizeof( oggds_header_t ) - 1 + p_input->p_fmt->i_extra );
445 if( p_input->p_fmt->i_extra )
447 memcpy( &p_stream->p_oggds_header[1],
448 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
451 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
453 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
454 sprintf( p_stream->p_oggds_header->sub_type, "%-x", i_tag );
456 SetQWLE( &p_stream->p_oggds_header->i_time_unit, INT64_C(10000000) );
457 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 );
458 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 30*1024 );
459 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit,
460 p_input->p_fmt->audio.i_rate );
461 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample,
462 p_input->p_fmt->audio.i_bitspersample );
463 SetDWLE( &p_stream->p_oggds_header->header.audio.i_channels,
464 p_input->p_fmt->audio.i_channels );
465 SetDWLE( &p_stream->p_oggds_header->header.audio.i_block_align,
466 p_input->p_fmt->audio.i_blockalign );
467 SetDWLE( &p_stream->p_oggds_header->header.audio.i_avgbytespersec,
468 p_input->p_fmt->i_bitrate / 8);
469 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
475 switch( p_stream->i_fourcc )
477 case VLC_FOURCC( 's', 'u','b', 't' ):
478 p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
479 if( !p_stream->p_oggds_header )
484 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
485 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
487 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
488 msg_Dbg( p_mux, "subtitles stream" );
492 FREENULL( p_input->p_sys );
497 FREENULL( p_input->p_sys );
501 p_stream->b_new = true;
503 p_sys->i_add_streams++;
508 /*****************************************************************************
509 * DelStream: Delete an elementary stream from the muxed stream
510 *****************************************************************************/
511 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
513 sout_mux_sys_t *p_sys = p_mux->p_sys;
514 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
517 msg_Dbg( p_mux, "removing input" );
519 /* flush all remaining data */
522 if( !p_stream->b_new )
524 while( block_FifoCount( p_input->p_fifo ) )
525 MuxBlock( p_mux, p_input );
528 if( !p_stream->b_new &&
529 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
531 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
532 sout_AccessOutWrite( p_mux->p_access, p_og );
535 /* move input in delete queue */
536 if( !p_stream->b_new )
538 p_sys->pp_del_streams = realloc( p_sys->pp_del_streams,
539 (p_sys->i_del_streams + 1) *
540 sizeof(ogg_stream_t *) );
541 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
545 /* wasn't already added so get rid of it */
546 FREENULL( p_stream->p_oggds_header );
547 FREENULL( p_stream );
548 p_sys->i_add_streams--;
552 p_input->p_sys = NULL;
557 /*****************************************************************************
558 * Ogg bitstream manipulation routines
559 *****************************************************************************/
560 static block_t *OggStreamFlush( sout_mux_t *p_mux,
561 ogg_stream_state *p_os, mtime_t i_pts )
564 block_t *p_og, *p_og_first = NULL;
567 while( ogg_stream_flush( p_os, &og ) )
570 p_og = block_New( p_mux, og.header_len + og.body_len );
572 memcpy( p_og->p_buffer, og.header, og.header_len );
573 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
578 i_pts = 0; // write it only once
580 block_ChainAppend( &p_og_first, p_og );
586 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
587 ogg_stream_state *p_os, mtime_t i_pts )
590 block_t *p_og, *p_og_first = NULL;
593 while( ogg_stream_pageout( p_os, &og ) )
596 p_og = block_New( p_mux, og.header_len + og.body_len );
598 memcpy( p_og->p_buffer, og.header, og.header_len );
599 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
604 i_pts = 0; // write them only once
606 block_ChainAppend( &p_og_first, p_og );
612 static block_t *OggCreateHeader( sout_mux_t *p_mux )
614 block_t *p_hdr = NULL;
615 block_t *p_og = NULL;
620 /* Write header for each stream. All b_o_s (beginning of stream) packets
621 * must appear first in the ogg stream so we take care of them first. */
622 for( i = 0; i < p_mux->i_nb_inputs; i++ )
624 sout_input_t *p_input = p_mux->pp_inputs[i];
625 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
626 p_stream->b_new = false;
628 msg_Dbg( p_mux, "creating header for %4.4s",
629 (char *)&p_stream->i_fourcc );
631 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
632 p_stream->i_packet_no = 0;
634 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
635 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
636 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
638 /* First packet in order: vorbis/speex/theora info */
639 p_extra = p_input->p_fmt->p_extra;
640 i_extra = p_input->p_fmt->i_extra;
642 op.bytes = *(p_extra++) << 8;
643 op.bytes |= (*(p_extra++) & 0xFF);
645 i_extra -= (op.bytes + 2);
648 msg_Err( p_mux, "header data corrupted");
655 op.packetno = p_stream->i_packet_no++;
656 ogg_stream_packetin( &p_stream->os, &op );
657 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
659 /* Get keyframe_granule_shift for theora granulepos calculation */
660 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
662 int i_keyframe_frequency_force =
663 1 << ((op.packet[40] << 6 >> 3) | (op.packet[41] >> 5));
665 /* granule_shift = i_log( frequency_force -1 ) */
666 p_stream->i_keyframe_granule_shift = 0;
667 i_keyframe_frequency_force--;
668 while( i_keyframe_frequency_force )
670 p_stream->i_keyframe_granule_shift++;
671 i_keyframe_frequency_force >>= 1;
675 else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
677 op.packet = p_input->p_fmt->p_extra;
678 op.bytes = p_input->p_fmt->i_extra;
682 op.packetno = p_stream->i_packet_no++;
683 ogg_stream_packetin( &p_stream->os, &op );
684 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
686 else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
688 /* flac stream marker (yeah, only that in the 1st packet) */
689 op.packet = (unsigned char *)"fLaC";
694 op.packetno = p_stream->i_packet_no++;
695 ogg_stream_packetin( &p_stream->os, &op );
696 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
698 else if( p_stream->p_oggds_header )
701 op.packet = (uint8_t*)p_stream->p_oggds_header;
702 op.bytes = p_stream->p_oggds_header->i_size + 1;
706 op.packetno = p_stream->i_packet_no++;
707 ogg_stream_packetin( &p_stream->os, &op );
708 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
711 block_ChainAppend( &p_hdr, p_og );
714 /* Take care of the non b_o_s headers */
715 for( i = 0; i < p_mux->i_nb_inputs; i++ )
717 sout_input_t *p_input = p_mux->pp_inputs[i];
718 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
720 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
721 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
722 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
724 /* Special case, headers are already there in the incoming stream.
725 * We need to gather them an mark them as headers. */
728 if( p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ) j = 1;
730 p_extra = p_input->p_fmt->p_extra;
731 i_extra = p_input->p_fmt->i_extra;
734 op.bytes = *(p_extra++) << 8;
735 op.bytes |= (*(p_extra++) & 0xFF);
738 i_extra -= (op.bytes + 2);
742 op.bytes = *(p_extra++) << 8;
743 op.bytes |= (*(p_extra++) & 0xFF);
746 i_extra -= (op.bytes + 2);
749 msg_Err( p_mux, "header data corrupted");
756 op.packetno = p_stream->i_packet_no++;
757 ogg_stream_packetin( &p_stream->os, &op );
759 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
760 block_ChainAppend( &p_hdr, p_og );
763 else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
764 p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
770 com[0] = PACKET_TYPE_COMMENT;
771 i_com = snprintf( (char *)(com+1), 127,
772 PACKAGE_VERSION" stream output" )
779 op.packetno = p_stream->i_packet_no++;
780 ogg_stream_packetin( &p_stream->os, &op );
781 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
782 block_ChainAppend( &p_hdr, p_og );
785 /* Special case for mp4v and flac */
786 if( ( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) ||
787 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ) &&
788 p_input->p_fmt->i_extra )
790 /* Send a packet with the VOL data for mp4v
791 * or STREAMINFO for flac */
792 msg_Dbg( p_mux, "writing extra data" );
793 op.bytes = p_input->p_fmt->i_extra;
794 op.packet = p_input->p_fmt->p_extra;
795 if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
797 /* Skip the flac stream marker */
804 op.packetno = p_stream->i_packet_no++;
805 ogg_stream_packetin( &p_stream->os, &op );
806 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
807 block_ChainAppend( &p_hdr, p_og );
811 /* set HEADER flag */
812 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
814 p_og->i_flags |= BLOCK_FLAG_HEADER;
819 static block_t *OggCreateFooter( sout_mux_t *p_mux )
821 sout_mux_sys_t *p_sys = p_mux->p_sys;
822 block_t *p_hdr = NULL;
827 /* flush all remaining data */
828 for( i = 0; i < p_mux->i_nb_inputs; i++ )
830 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
832 /* skip newly added streams */
833 if( p_stream->b_new ) continue;
835 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
837 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
838 sout_AccessOutWrite( p_mux->p_access, p_og );
842 /* Write eos packets for each stream. */
843 for( i = 0; i < p_mux->i_nb_inputs; i++ )
845 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
847 /* skip newly added streams */
848 if( p_stream->b_new ) continue;
855 op.packetno = p_stream->i_packet_no++;
856 ogg_stream_packetin( &p_stream->os, &op );
858 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
859 block_ChainAppend( &p_hdr, p_og );
860 ogg_stream_clear( &p_stream->os );
863 for( i = 0; i < p_sys->i_del_streams; i++ )
870 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
871 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
873 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
874 block_ChainAppend( &p_hdr, p_og );
875 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
881 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
887 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
892 if( i_count == 0 ) return; /* ignore. */
894 i_delta = i_length / i_count;
896 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
898 p_tmp->i_dts = i_dts;
899 p_tmp->i_length = i_delta;
905 /*****************************************************************************
906 * Mux: multiplex available data in input fifos into the Ogg bitstream
907 *****************************************************************************/
908 static int Mux( sout_mux_t *p_mux )
910 sout_mux_sys_t *p_sys = p_mux->p_sys;
911 block_t *p_og = NULL;
915 if( p_sys->i_add_streams || p_sys->i_del_streams )
917 /* Open new ogg stream */
918 if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
920 msg_Dbg( p_mux, "waiting for data..." );
924 if( p_sys->i_streams )
926 /* Close current ogg stream */
929 msg_Dbg( p_mux, "writing footer" );
930 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
932 /* Remove deleted logical streams */
933 for( i = 0; i < p_sys->i_del_streams; i++ )
935 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
936 FREENULL( p_sys->pp_del_streams[i] );
938 FREENULL( p_sys->pp_del_streams );
939 p_sys->i_streams = 0;
942 msg_Dbg( p_mux, "writing header" );
943 p_sys->i_start_dts = i_dts;
944 p_sys->i_streams = p_mux->i_nb_inputs;
945 p_sys->i_del_streams = 0;
946 p_sys->i_add_streams = 0;
947 block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
949 /* Write header and/or footer */
950 OggSetDate( p_og, i_dts, 0 );
951 sout_AccessOutWrite( p_mux->p_access, p_og );
957 if( MuxGetStream( p_mux, &i_stream, 0 ) < 0 ) return VLC_SUCCESS;
958 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
964 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
966 sout_mux_sys_t *p_sys = p_mux->p_sys;
967 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
968 block_t *p_data = block_FifoGet( p_input->p_fifo );
969 block_t *p_og = NULL;
972 if( p_stream->i_fourcc != VLC_FOURCC( 'v', 'o', 'r', 'b' ) &&
973 p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
974 p_stream->i_fourcc != VLC_FOURCC( 's', 'p', 'x', ' ' ) &&
975 p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) &&
976 p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
978 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
979 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
982 op.packet = p_data->p_buffer;
983 op.bytes = p_data->i_buffer;
986 op.packetno = p_stream->i_packet_no++;
988 if( p_stream->i_cat == AUDIO_ES )
990 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
991 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ||
992 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
994 /* number of sample from begining + current packet */
996 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
997 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
999 else if( p_stream->p_oggds_header )
1001 /* number of sample from begining */
1002 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
1003 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
1006 else if( p_stream->i_cat == VIDEO_ES )
1008 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
1010 /* FIXME, we assume only keyframes */
1011 op.granulepos = ( ( p_data->i_dts - p_sys->i_start_dts ) *
1012 p_input->p_fmt->video.i_frame_rate /
1013 p_input->p_fmt->video.i_frame_rate_base /
1014 INT64_C(1000000) ) << p_stream->i_keyframe_granule_shift;
1016 else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
1018 mtime_t dt = (p_data->i_dts - p_sys->i_start_dts + 1)
1019 * p_input->p_fmt->video.i_frame_rate *2
1020 / p_input->p_fmt->video.i_frame_rate_base
1022 mtime_t delay = (p_data->i_pts - p_data->i_dts + 1)
1023 * p_input->p_fmt->video.i_frame_rate *2
1024 / p_input->p_fmt->video.i_frame_rate_base
1026 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1027 p_stream->i_last_keyframe = dt;
1028 mtime_t dist = dt - p_stream->i_last_keyframe;
1029 op.granulepos = dt << 31 | (dist&0xff00) << 14
1030 | (delay&0x1fff) << 9 | (dist&0xff);
1032 else if( p_stream->p_oggds_header )
1033 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
1034 p_stream->p_oggds_header->i_time_unit;
1036 else if( p_stream->i_cat == SPU_ES )
1038 /* granulepos is in millisec */
1039 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
1042 ogg_stream_packetin( &p_stream->os, &op );
1044 if( p_stream->i_cat == SPU_ES ||
1045 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
1046 p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
1048 /* Subtitles or Speex packets are quite small so they
1049 * need to be flushed to be sent on time */
1050 /* The OggDirac mapping suggests ever so strongly that a
1051 * page flush occurs after each OggDirac packet, so to make
1052 * the timestamps unambiguous */
1053 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
1057 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1062 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1063 p_stream->i_dts = -1;
1064 p_stream->i_length = 0;
1066 sout_AccessOutWrite( p_mux->p_access, p_og );
1070 if( p_stream->i_dts < 0 )
1072 p_stream->i_dts = p_data->i_dts;
1074 p_stream->i_length += p_data->i_length;
1077 block_Release( p_data );