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 */
187 uint64_t u_last_granulepos; /* Used for correct EOS page */
190 oggds_header_t *p_oggds_header;
194 struct sout_mux_sys_t
199 int i_next_serial_no;
201 /* number of logical streams pending to be added */
204 /* logical streams pending to be deleted */
206 ogg_stream_t **pp_del_streams;
209 static void OggSetDate( block_t *, mtime_t , mtime_t );
210 static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
212 /*****************************************************************************
214 *****************************************************************************/
215 static int Open( vlc_object_t *p_this )
217 sout_mux_t *p_mux = (sout_mux_t*)p_this;
218 sout_mux_sys_t *p_sys;
220 msg_Info( p_mux, "Open" );
222 p_sys = malloc( sizeof( sout_mux_sys_t ) );
225 p_sys->i_streams = 0;
226 p_sys->i_add_streams = 0;
227 p_sys->i_del_streams = 0;
228 p_sys->pp_del_streams = 0;
230 p_mux->p_sys = p_sys;
231 p_mux->pf_control = Control;
232 p_mux->pf_addstream = AddStream;
233 p_mux->pf_delstream = DelStream;
236 /* First serial number is random.
237 * (Done like this because on win32 you need to seed the random number
238 * generator once per thread). */
239 srand( (unsigned int)time( NULL ) );
240 p_sys->i_next_serial_no = rand();
245 /*****************************************************************************
246 * Close: Finalize ogg bitstream and close muxer
247 *****************************************************************************/
248 static void Close( vlc_object_t * p_this )
250 sout_mux_t *p_mux = (sout_mux_t*)p_this;
251 sout_mux_sys_t *p_sys = p_mux->p_sys;
253 msg_Info( p_mux, "Close" );
255 if( p_sys->i_del_streams )
257 block_t *p_og = NULL;
261 /* Close the current ogg stream */
262 msg_Dbg( p_mux, "writing footer" );
263 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
265 /* Remove deleted logical streams */
266 for( i = 0; i < p_sys->i_del_streams; i++ )
268 i_dts = p_sys->pp_del_streams[i]->i_dts;
269 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
270 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
271 FREENULL( p_sys->pp_del_streams[i] );
273 FREENULL( p_sys->pp_del_streams );
274 p_sys->i_streams -= p_sys->i_del_streams;
277 OggSetDate( p_og, i_dts, 0 );
278 sout_AccessOutWrite( p_mux->p_access, p_og );
284 /*****************************************************************************
286 *****************************************************************************/
287 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
295 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
296 pb_bool = (bool*)va_arg( args, bool * );
300 case MUX_GET_ADD_STREAM_WAIT:
301 pb_bool = (bool*)va_arg( args, bool * );
306 ppsz = (char**)va_arg( args, char ** );
307 *ppsz = strdup( "application/ogg" );
314 /*****************************************************************************
315 * AddStream: Add an elementary stream to the muxed stream
316 *****************************************************************************/
317 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
319 sout_mux_sys_t *p_sys = p_mux->p_sys;
320 ogg_stream_t *p_stream;
323 msg_Dbg( p_mux, "adding input" );
325 p_input->p_sys = p_stream = calloc( 1, sizeof( ogg_stream_t ) );
329 p_stream->i_cat = p_input->p_fmt->i_cat;
330 p_stream->i_fourcc = p_input->p_fmt->i_codec;
331 p_stream->i_serial_no = p_sys->i_next_serial_no++;
332 p_stream->i_packet_no = 0;
334 p_stream->p_oggds_header = 0;
336 switch( p_input->p_fmt->i_cat )
339 if( !p_input->p_fmt->video.i_frame_rate ||
340 !p_input->p_fmt->video.i_frame_rate_base )
342 msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
343 p_input->p_fmt->video.i_frame_rate = 25;
344 p_input->p_fmt->video.i_frame_rate_base = 1;
347 switch( p_stream->i_fourcc )
349 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
350 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
351 case VLC_FOURCC( 'D', 'I', 'V', '3' ):
352 case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
353 case VLC_FOURCC( 'W', 'M', 'V', '1' ):
354 case VLC_FOURCC( 'W', 'M', 'V', '2' ):
355 case VLC_FOURCC( 'W', 'M', 'V', '3' ):
356 case VLC_FOURCC( 'S', 'N', 'O', 'W' ):
357 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
358 if( !p_stream->p_oggds_header )
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 = calloc( 1, sizeof(oggds_header_t) );
479 if( !p_stream->p_oggds_header )
484 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
486 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
487 msg_Dbg( p_mux, "subtitles stream" );
491 FREENULL( p_input->p_sys );
496 FREENULL( p_input->p_sys );
500 p_stream->b_new = true;
502 p_sys->i_add_streams++;
507 /*****************************************************************************
508 * DelStream: Delete an elementary stream from the muxed stream
509 *****************************************************************************/
510 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
512 sout_mux_sys_t *p_sys = p_mux->p_sys;
513 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
516 msg_Dbg( p_mux, "removing input" );
518 /* flush all remaining data */
521 if( !p_stream->b_new )
523 while( block_FifoCount( p_input->p_fifo ) )
524 MuxBlock( p_mux, p_input );
527 if( !p_stream->b_new &&
528 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
530 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
531 sout_AccessOutWrite( p_mux->p_access, p_og );
534 /* move input in delete queue */
535 if( !p_stream->b_new )
537 p_sys->pp_del_streams = realloc( p_sys->pp_del_streams,
538 (p_sys->i_del_streams + 1) *
539 sizeof(ogg_stream_t *) );
540 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
544 /* wasn't already added so get rid of it */
545 FREENULL( p_stream->p_oggds_header );
546 FREENULL( p_stream );
547 p_sys->i_add_streams--;
551 p_input->p_sys = NULL;
556 /*****************************************************************************
557 * Ogg bitstream manipulation routines
558 *****************************************************************************/
559 static block_t *OggStreamFlush( sout_mux_t *p_mux,
560 ogg_stream_state *p_os, mtime_t i_pts )
563 block_t *p_og, *p_og_first = NULL;
566 while( ogg_stream_flush( p_os, &og ) )
569 p_og = block_New( p_mux, og.header_len + og.body_len );
571 memcpy( p_og->p_buffer, og.header, og.header_len );
572 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
577 i_pts = 0; // write it only once
579 block_ChainAppend( &p_og_first, p_og );
585 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
586 ogg_stream_state *p_os, mtime_t i_pts )
589 block_t *p_og, *p_og_first = NULL;
592 while( ogg_stream_pageout( p_os, &og ) )
595 p_og = block_New( p_mux, og.header_len + og.body_len );
597 memcpy( p_og->p_buffer, og.header, og.header_len );
598 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
603 i_pts = 0; // write them only once
605 block_ChainAppend( &p_og_first, p_og );
611 static block_t *OggCreateHeader( sout_mux_t *p_mux )
613 block_t *p_hdr = NULL;
614 block_t *p_og = NULL;
619 /* Write header for each stream. All b_o_s (beginning of stream) packets
620 * must appear first in the ogg stream so we take care of them first. */
621 for( i = 0; i < p_mux->i_nb_inputs; i++ )
623 sout_input_t *p_input = p_mux->pp_inputs[i];
624 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
625 p_stream->b_new = false;
627 msg_Dbg( p_mux, "creating header for %4.4s",
628 (char *)&p_stream->i_fourcc );
630 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
631 p_stream->i_packet_no = 0;
633 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
634 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
635 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
637 /* First packet in order: vorbis/speex/theora info */
638 p_extra = p_input->p_fmt->p_extra;
639 i_extra = p_input->p_fmt->i_extra;
641 op.bytes = *(p_extra++) << 8;
642 op.bytes |= (*(p_extra++) & 0xFF);
644 i_extra -= (op.bytes + 2);
647 msg_Err( p_mux, "header data corrupted");
654 op.packetno = p_stream->i_packet_no++;
655 ogg_stream_packetin( &p_stream->os, &op );
656 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
658 /* Get keyframe_granule_shift for theora granulepos calculation */
659 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
661 int i_keyframe_frequency_force =
662 1 << ((op.packet[40] << 6 >> 3) | (op.packet[41] >> 5));
664 /* granule_shift = i_log( frequency_force -1 ) */
665 p_stream->i_keyframe_granule_shift = 0;
666 i_keyframe_frequency_force--;
667 while( i_keyframe_frequency_force )
669 p_stream->i_keyframe_granule_shift++;
670 i_keyframe_frequency_force >>= 1;
674 else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
676 op.packet = p_input->p_fmt->p_extra;
677 op.bytes = p_input->p_fmt->i_extra;
681 op.packetno = p_stream->i_packet_no++;
682 ogg_stream_packetin( &p_stream->os, &op );
683 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
685 else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
687 /* flac stream marker (yeah, only that in the 1st packet) */
688 op.packet = (unsigned char *)"fLaC";
693 op.packetno = p_stream->i_packet_no++;
694 ogg_stream_packetin( &p_stream->os, &op );
695 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
697 else if( p_stream->p_oggds_header )
700 op.packet = (uint8_t*)p_stream->p_oggds_header;
701 op.bytes = p_stream->p_oggds_header->i_size + 1;
705 op.packetno = p_stream->i_packet_no++;
706 ogg_stream_packetin( &p_stream->os, &op );
707 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
710 block_ChainAppend( &p_hdr, p_og );
713 /* Take care of the non b_o_s headers */
714 for( i = 0; i < p_mux->i_nb_inputs; i++ )
716 sout_input_t *p_input = p_mux->pp_inputs[i];
717 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
719 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
720 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
721 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
723 /* Special case, headers are already there in the incoming stream.
724 * We need to gather them an mark them as headers. */
727 if( p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ) j = 1;
729 p_extra = p_input->p_fmt->p_extra;
730 i_extra = p_input->p_fmt->i_extra;
733 op.bytes = *(p_extra++) << 8;
734 op.bytes |= (*(p_extra++) & 0xFF);
737 i_extra -= (op.bytes + 2);
741 op.bytes = *(p_extra++) << 8;
742 op.bytes |= (*(p_extra++) & 0xFF);
745 i_extra -= (op.bytes + 2);
748 msg_Err( p_mux, "header data corrupted");
755 op.packetno = p_stream->i_packet_no++;
756 ogg_stream_packetin( &p_stream->os, &op );
758 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
759 block_ChainAppend( &p_hdr, p_og );
762 else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
763 p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
769 com[0] = PACKET_TYPE_COMMENT;
770 i_com = snprintf( (char *)(com+1), 127,
771 PACKAGE_VERSION" stream output" )
778 op.packetno = p_stream->i_packet_no++;
779 ogg_stream_packetin( &p_stream->os, &op );
780 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
781 block_ChainAppend( &p_hdr, p_og );
784 /* Special case for mp4v and flac */
785 if( ( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) ||
786 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ) &&
787 p_input->p_fmt->i_extra )
789 /* Send a packet with the VOL data for mp4v
790 * or STREAMINFO for flac */
791 msg_Dbg( p_mux, "writing extra data" );
792 op.bytes = p_input->p_fmt->i_extra;
793 op.packet = p_input->p_fmt->p_extra;
794 if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
796 /* Skip the flac stream marker */
803 op.packetno = p_stream->i_packet_no++;
804 ogg_stream_packetin( &p_stream->os, &op );
805 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
806 block_ChainAppend( &p_hdr, p_og );
810 /* set HEADER flag */
811 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
813 p_og->i_flags |= BLOCK_FLAG_HEADER;
818 static block_t *OggCreateFooter( sout_mux_t *p_mux )
820 sout_mux_sys_t *p_sys = p_mux->p_sys;
821 block_t *p_hdr = NULL;
826 /* flush all remaining data */
827 for( i = 0; i < p_mux->i_nb_inputs; i++ )
829 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
831 /* skip newly added streams */
832 if( p_stream->b_new ) continue;
834 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
836 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
837 sout_AccessOutWrite( p_mux->p_access, p_og );
841 /* Write eos packets for each stream. */
842 for( i = 0; i < p_mux->i_nb_inputs; i++ )
844 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
846 /* skip newly added streams */
847 if( p_stream->b_new ) continue;
853 op.granulepos = p_stream->u_last_granulepos;
854 op.packetno = p_stream->i_packet_no++;
855 ogg_stream_packetin( &p_stream->os, &op );
857 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
858 block_ChainAppend( &p_hdr, p_og );
859 ogg_stream_clear( &p_stream->os );
862 for( i = 0; i < p_sys->i_del_streams; i++ )
868 op.granulepos = p_sys->pp_del_streams[i]->u_last_granulepos;
869 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
870 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
872 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
873 block_ChainAppend( &p_hdr, p_og );
874 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
880 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
886 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
891 if( i_count == 0 ) return; /* ignore. */
893 i_delta = i_length / i_count;
895 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
897 p_tmp->i_dts = i_dts;
898 p_tmp->i_length = i_delta;
904 /*****************************************************************************
905 * Mux: multiplex available data in input fifos into the Ogg bitstream
906 *****************************************************************************/
907 static int Mux( sout_mux_t *p_mux )
909 sout_mux_sys_t *p_sys = p_mux->p_sys;
910 block_t *p_og = NULL;
914 if( p_sys->i_add_streams || p_sys->i_del_streams )
916 /* Open new ogg stream */
917 if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
919 msg_Dbg( p_mux, "waiting for data..." );
923 if( p_sys->i_streams )
925 /* Close current ogg stream */
928 msg_Dbg( p_mux, "writing footer" );
929 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
931 /* Remove deleted logical streams */
932 for( i = 0; i < p_sys->i_del_streams; i++ )
934 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
935 FREENULL( p_sys->pp_del_streams[i] );
937 FREENULL( p_sys->pp_del_streams );
938 p_sys->i_streams = 0;
941 msg_Dbg( p_mux, "writing header" );
942 p_sys->i_start_dts = i_dts;
943 p_sys->i_streams = p_mux->i_nb_inputs;
944 p_sys->i_del_streams = 0;
945 p_sys->i_add_streams = 0;
946 block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
948 /* Write header and/or footer */
949 OggSetDate( p_og, i_dts, 0 );
950 sout_AccessOutWrite( p_mux->p_access, p_og );
956 if( MuxGetStream( p_mux, &i_stream, 0 ) < 0 ) return VLC_SUCCESS;
957 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
963 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
965 sout_mux_sys_t *p_sys = p_mux->p_sys;
966 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
967 block_t *p_data = block_FifoGet( p_input->p_fifo );
968 block_t *p_og = NULL;
971 if( p_stream->i_fourcc != VLC_FOURCC( 'v', 'o', 'r', 'b' ) &&
972 p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
973 p_stream->i_fourcc != VLC_FOURCC( 's', 'p', 'x', ' ' ) &&
974 p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) &&
975 p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
977 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
978 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
981 op.packet = p_data->p_buffer;
982 op.bytes = p_data->i_buffer;
985 op.packetno = p_stream->i_packet_no++;
987 if( p_stream->i_cat == AUDIO_ES )
989 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
990 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ||
991 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
993 /* number of sample from begining + current packet */
995 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
996 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
998 else if( p_stream->p_oggds_header )
1000 /* number of sample from begining */
1001 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
1002 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
1005 else if( p_stream->i_cat == VIDEO_ES )
1007 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
1009 /* FIXME, we assume only keyframes */
1010 op.granulepos = ( ( p_data->i_dts - p_sys->i_start_dts ) *
1011 p_input->p_fmt->video.i_frame_rate /
1012 p_input->p_fmt->video.i_frame_rate_base /
1013 INT64_C(1000000) ) << p_stream->i_keyframe_granule_shift;
1015 else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
1017 mtime_t dt = (p_data->i_dts - p_sys->i_start_dts + 1)
1018 * p_input->p_fmt->video.i_frame_rate *2
1019 / p_input->p_fmt->video.i_frame_rate_base
1021 mtime_t delay = (p_data->i_pts - p_data->i_dts + 1)
1022 * p_input->p_fmt->video.i_frame_rate *2
1023 / p_input->p_fmt->video.i_frame_rate_base
1025 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1026 p_stream->i_last_keyframe = dt;
1027 mtime_t dist = dt - p_stream->i_last_keyframe;
1028 op.granulepos = dt << 31 | (dist&0xff00) << 14
1029 | (delay&0x1fff) << 9 | (dist&0xff);
1031 else if( p_stream->p_oggds_header )
1032 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
1033 p_stream->p_oggds_header->i_time_unit;
1035 else if( p_stream->i_cat == SPU_ES )
1037 /* granulepos is in millisec */
1038 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
1041 p_stream->u_last_granulepos = op.granulepos;
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 );