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 = malloc( sizeof(oggds_header_t) );
358 if( !p_stream->p_oggds_header )
363 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
364 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
366 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
367 if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) )
369 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
371 else if( p_stream->i_fourcc == VLC_FOURCC( 'D', 'I', 'V', '3' ) )
373 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
377 memcpy( p_stream->p_oggds_header->sub_type,
378 &p_stream->i_fourcc, 4 );
380 SetDWLE( &p_stream->p_oggds_header->i_size,
381 sizeof( oggds_header_t ) - 1 );
382 SetQWLE( &p_stream->p_oggds_header->i_time_unit,
383 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
384 (int64_t)p_input->p_fmt->video.i_frame_rate );
385 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit, 1 );
386 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 ); /* ??? */
387 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 1024*1024 );
388 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample, 0 );
389 SetDWLE( &p_stream->p_oggds_header->header.video.i_width,
390 p_input->p_fmt->video.i_width );
391 SetDWLE( &p_stream->p_oggds_header->header.video.i_height,
392 p_input->p_fmt->video.i_height );
393 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
396 case VLC_FOURCC( 'd', 'r', 'a', 'c' ):
397 msg_Dbg( p_mux, "dirac stream" );
400 case VLC_FOURCC( 't', 'h', 'e', 'o' ):
401 msg_Dbg( p_mux, "theora stream" );
405 FREENULL( p_input->p_sys );
411 switch( p_stream->i_fourcc )
413 case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
414 msg_Dbg( p_mux, "vorbis stream" );
417 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
418 msg_Dbg( p_mux, "speex stream" );
421 case VLC_FOURCC( 'f', 'l', 'a', 'c' ):
422 msg_Dbg( p_mux, "flac stream" );
426 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
427 if( i_tag == WAVE_FORMAT_UNKNOWN )
429 FREENULL( p_input->p_sys );
433 p_stream->p_oggds_header =
434 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
435 if( !p_stream->p_oggds_header )
440 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
441 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
443 SetDWLE( &p_stream->p_oggds_header->i_size,
444 sizeof( oggds_header_t ) - 1 + p_input->p_fmt->i_extra );
446 if( p_input->p_fmt->i_extra )
448 memcpy( &p_stream->p_oggds_header[1],
449 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
452 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
454 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
455 sprintf( p_stream->p_oggds_header->sub_type, "%-x", i_tag );
457 SetQWLE( &p_stream->p_oggds_header->i_time_unit, INT64_C(10000000) );
458 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 );
459 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 30*1024 );
460 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit,
461 p_input->p_fmt->audio.i_rate );
462 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample,
463 p_input->p_fmt->audio.i_bitspersample );
464 SetDWLE( &p_stream->p_oggds_header->header.audio.i_channels,
465 p_input->p_fmt->audio.i_channels );
466 SetDWLE( &p_stream->p_oggds_header->header.audio.i_block_align,
467 p_input->p_fmt->audio.i_blockalign );
468 SetDWLE( &p_stream->p_oggds_header->header.audio.i_avgbytespersec,
469 p_input->p_fmt->i_bitrate / 8);
470 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
476 switch( p_stream->i_fourcc )
478 case VLC_FOURCC( 's', 'u','b', 't' ):
479 p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
480 if( !p_stream->p_oggds_header )
485 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
486 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
488 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
489 msg_Dbg( p_mux, "subtitles stream" );
493 FREENULL( p_input->p_sys );
498 FREENULL( p_input->p_sys );
502 p_stream->b_new = true;
504 p_sys->i_add_streams++;
509 /*****************************************************************************
510 * DelStream: Delete an elementary stream from the muxed stream
511 *****************************************************************************/
512 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
514 sout_mux_sys_t *p_sys = p_mux->p_sys;
515 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
518 msg_Dbg( p_mux, "removing input" );
520 /* flush all remaining data */
523 if( !p_stream->b_new )
525 while( block_FifoCount( p_input->p_fifo ) )
526 MuxBlock( p_mux, p_input );
529 if( !p_stream->b_new &&
530 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
532 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
533 sout_AccessOutWrite( p_mux->p_access, p_og );
536 /* move input in delete queue */
537 if( !p_stream->b_new )
539 p_sys->pp_del_streams = realloc( p_sys->pp_del_streams,
540 (p_sys->i_del_streams + 1) *
541 sizeof(ogg_stream_t *) );
542 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
546 /* wasn't already added so get rid of it */
547 FREENULL( p_stream->p_oggds_header );
548 FREENULL( p_stream );
549 p_sys->i_add_streams--;
553 p_input->p_sys = NULL;
558 /*****************************************************************************
559 * Ogg bitstream manipulation routines
560 *****************************************************************************/
561 static block_t *OggStreamFlush( sout_mux_t *p_mux,
562 ogg_stream_state *p_os, mtime_t i_pts )
565 block_t *p_og, *p_og_first = NULL;
568 while( ogg_stream_flush( p_os, &og ) )
571 p_og = block_New( p_mux, og.header_len + og.body_len );
573 memcpy( p_og->p_buffer, og.header, og.header_len );
574 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
579 i_pts = 0; // write it only once
581 block_ChainAppend( &p_og_first, p_og );
587 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
588 ogg_stream_state *p_os, mtime_t i_pts )
591 block_t *p_og, *p_og_first = NULL;
594 while( ogg_stream_pageout( p_os, &og ) )
597 p_og = block_New( p_mux, og.header_len + og.body_len );
599 memcpy( p_og->p_buffer, og.header, og.header_len );
600 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
605 i_pts = 0; // write them only once
607 block_ChainAppend( &p_og_first, p_og );
613 static block_t *OggCreateHeader( sout_mux_t *p_mux )
615 block_t *p_hdr = NULL;
616 block_t *p_og = NULL;
621 /* Write header for each stream. All b_o_s (beginning of stream) packets
622 * must appear first in the ogg stream so we take care of them first. */
623 for( i = 0; i < p_mux->i_nb_inputs; i++ )
625 sout_input_t *p_input = p_mux->pp_inputs[i];
626 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
627 p_stream->b_new = false;
629 msg_Dbg( p_mux, "creating header for %4.4s",
630 (char *)&p_stream->i_fourcc );
632 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
633 p_stream->i_packet_no = 0;
635 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
636 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
637 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
639 /* First packet in order: vorbis/speex/theora info */
640 p_extra = p_input->p_fmt->p_extra;
641 i_extra = p_input->p_fmt->i_extra;
643 op.bytes = *(p_extra++) << 8;
644 op.bytes |= (*(p_extra++) & 0xFF);
646 i_extra -= (op.bytes + 2);
649 msg_Err( p_mux, "header data corrupted");
656 op.packetno = p_stream->i_packet_no++;
657 ogg_stream_packetin( &p_stream->os, &op );
658 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
660 /* Get keyframe_granule_shift for theora granulepos calculation */
661 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
663 int i_keyframe_frequency_force =
664 1 << ((op.packet[40] << 6 >> 3) | (op.packet[41] >> 5));
666 /* granule_shift = i_log( frequency_force -1 ) */
667 p_stream->i_keyframe_granule_shift = 0;
668 i_keyframe_frequency_force--;
669 while( i_keyframe_frequency_force )
671 p_stream->i_keyframe_granule_shift++;
672 i_keyframe_frequency_force >>= 1;
676 else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
678 op.packet = p_input->p_fmt->p_extra;
679 op.bytes = p_input->p_fmt->i_extra;
683 op.packetno = p_stream->i_packet_no++;
684 ogg_stream_packetin( &p_stream->os, &op );
685 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
687 else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
689 /* flac stream marker (yeah, only that in the 1st packet) */
690 op.packet = (unsigned char *)"fLaC";
695 op.packetno = p_stream->i_packet_no++;
696 ogg_stream_packetin( &p_stream->os, &op );
697 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
699 else if( p_stream->p_oggds_header )
702 op.packet = (uint8_t*)p_stream->p_oggds_header;
703 op.bytes = p_stream->p_oggds_header->i_size + 1;
707 op.packetno = p_stream->i_packet_no++;
708 ogg_stream_packetin( &p_stream->os, &op );
709 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
712 block_ChainAppend( &p_hdr, p_og );
715 /* Take care of the non b_o_s headers */
716 for( i = 0; i < p_mux->i_nb_inputs; i++ )
718 sout_input_t *p_input = p_mux->pp_inputs[i];
719 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
721 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
722 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
723 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
725 /* Special case, headers are already there in the incoming stream.
726 * We need to gather them an mark them as headers. */
729 if( p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ) j = 1;
731 p_extra = p_input->p_fmt->p_extra;
732 i_extra = p_input->p_fmt->i_extra;
735 op.bytes = *(p_extra++) << 8;
736 op.bytes |= (*(p_extra++) & 0xFF);
739 i_extra -= (op.bytes + 2);
743 op.bytes = *(p_extra++) << 8;
744 op.bytes |= (*(p_extra++) & 0xFF);
747 i_extra -= (op.bytes + 2);
750 msg_Err( p_mux, "header data corrupted");
757 op.packetno = p_stream->i_packet_no++;
758 ogg_stream_packetin( &p_stream->os, &op );
760 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
761 block_ChainAppend( &p_hdr, p_og );
764 else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
765 p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
771 com[0] = PACKET_TYPE_COMMENT;
772 i_com = snprintf( (char *)(com+1), 127,
773 PACKAGE_VERSION" stream output" )
780 op.packetno = p_stream->i_packet_no++;
781 ogg_stream_packetin( &p_stream->os, &op );
782 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
783 block_ChainAppend( &p_hdr, p_og );
786 /* Special case for mp4v and flac */
787 if( ( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) ||
788 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ) &&
789 p_input->p_fmt->i_extra )
791 /* Send a packet with the VOL data for mp4v
792 * or STREAMINFO for flac */
793 msg_Dbg( p_mux, "writing extra data" );
794 op.bytes = p_input->p_fmt->i_extra;
795 op.packet = p_input->p_fmt->p_extra;
796 if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
798 /* Skip the flac stream marker */
805 op.packetno = p_stream->i_packet_no++;
806 ogg_stream_packetin( &p_stream->os, &op );
807 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
808 block_ChainAppend( &p_hdr, p_og );
812 /* set HEADER flag */
813 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
815 p_og->i_flags |= BLOCK_FLAG_HEADER;
820 static block_t *OggCreateFooter( sout_mux_t *p_mux )
822 sout_mux_sys_t *p_sys = p_mux->p_sys;
823 block_t *p_hdr = NULL;
828 /* flush all remaining data */
829 for( i = 0; i < p_mux->i_nb_inputs; i++ )
831 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
833 /* skip newly added streams */
834 if( p_stream->b_new ) continue;
836 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
838 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
839 sout_AccessOutWrite( p_mux->p_access, p_og );
843 /* Write eos packets for each stream. */
844 for( i = 0; i < p_mux->i_nb_inputs; i++ )
846 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
848 /* skip newly added streams */
849 if( p_stream->b_new ) continue;
855 op.granulepos = p_stream->u_last_granulepos;
856 op.packetno = p_stream->i_packet_no++;
857 ogg_stream_packetin( &p_stream->os, &op );
859 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
860 block_ChainAppend( &p_hdr, p_og );
861 ogg_stream_clear( &p_stream->os );
864 for( i = 0; i < p_sys->i_del_streams; i++ )
870 op.granulepos = p_sys->pp_del_streams[i]->u_last_granulepos;
871 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
872 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
874 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
875 block_ChainAppend( &p_hdr, p_og );
876 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
882 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
888 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
893 if( i_count == 0 ) return; /* ignore. */
895 i_delta = i_length / i_count;
897 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
899 p_tmp->i_dts = i_dts;
900 p_tmp->i_length = i_delta;
906 /*****************************************************************************
907 * Mux: multiplex available data in input fifos into the Ogg bitstream
908 *****************************************************************************/
909 static int Mux( sout_mux_t *p_mux )
911 sout_mux_sys_t *p_sys = p_mux->p_sys;
912 block_t *p_og = NULL;
916 if( p_sys->i_add_streams || p_sys->i_del_streams )
918 /* Open new ogg stream */
919 if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
921 msg_Dbg( p_mux, "waiting for data..." );
925 if( p_sys->i_streams )
927 /* Close current ogg stream */
930 msg_Dbg( p_mux, "writing footer" );
931 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
933 /* Remove deleted logical streams */
934 for( i = 0; i < p_sys->i_del_streams; i++ )
936 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
937 FREENULL( p_sys->pp_del_streams[i] );
939 FREENULL( p_sys->pp_del_streams );
940 p_sys->i_streams = 0;
943 msg_Dbg( p_mux, "writing header" );
944 p_sys->i_start_dts = i_dts;
945 p_sys->i_streams = p_mux->i_nb_inputs;
946 p_sys->i_del_streams = 0;
947 p_sys->i_add_streams = 0;
948 block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
950 /* Write header and/or footer */
951 OggSetDate( p_og, i_dts, 0 );
952 sout_AccessOutWrite( p_mux->p_access, p_og );
958 if( MuxGetStream( p_mux, &i_stream, 0 ) < 0 ) return VLC_SUCCESS;
959 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
965 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
967 sout_mux_sys_t *p_sys = p_mux->p_sys;
968 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
969 block_t *p_data = block_FifoGet( p_input->p_fifo );
970 block_t *p_og = NULL;
973 if( p_stream->i_fourcc != VLC_FOURCC( 'v', 'o', 'r', 'b' ) &&
974 p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
975 p_stream->i_fourcc != VLC_FOURCC( 's', 'p', 'x', ' ' ) &&
976 p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) &&
977 p_stream->i_fourcc != VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
979 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
980 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
983 op.packet = p_data->p_buffer;
984 op.bytes = p_data->i_buffer;
987 op.packetno = p_stream->i_packet_no++;
989 if( p_stream->i_cat == AUDIO_ES )
991 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
992 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ||
993 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
995 /* number of sample from begining + current packet */
997 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
998 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
1000 else if( p_stream->p_oggds_header )
1002 /* number of sample from begining */
1003 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
1004 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
1007 else if( p_stream->i_cat == VIDEO_ES )
1009 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
1011 /* FIXME, we assume only keyframes */
1012 op.granulepos = ( ( p_data->i_dts - p_sys->i_start_dts ) *
1013 p_input->p_fmt->video.i_frame_rate /
1014 p_input->p_fmt->video.i_frame_rate_base /
1015 INT64_C(1000000) ) << p_stream->i_keyframe_granule_shift;
1017 else if( p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
1019 mtime_t dt = (p_data->i_dts - p_sys->i_start_dts + 1)
1020 * p_input->p_fmt->video.i_frame_rate *2
1021 / p_input->p_fmt->video.i_frame_rate_base
1023 mtime_t delay = (p_data->i_pts - p_data->i_dts + 1)
1024 * p_input->p_fmt->video.i_frame_rate *2
1025 / p_input->p_fmt->video.i_frame_rate_base
1027 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1028 p_stream->i_last_keyframe = dt;
1029 mtime_t dist = dt - p_stream->i_last_keyframe;
1030 op.granulepos = dt << 31 | (dist&0xff00) << 14
1031 | (delay&0x1fff) << 9 | (dist&0xff);
1033 else if( p_stream->p_oggds_header )
1034 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
1035 p_stream->p_oggds_header->i_time_unit;
1037 else if( p_stream->i_cat == SPU_ES )
1039 /* granulepos is in millisec */
1040 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
1043 p_stream->u_last_granulepos = op.granulepos;
1044 ogg_stream_packetin( &p_stream->os, &op );
1046 if( p_stream->i_cat == SPU_ES ||
1047 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
1048 p_stream->i_fourcc == VLC_FOURCC( 'd', 'r', 'a', 'c' ) )
1050 /* Subtitles or Speex packets are quite small so they
1051 * need to be flushed to be sent on time */
1052 /* The OggDirac mapping suggests ever so strongly that a
1053 * page flush occurs after each OggDirac packet, so to make
1054 * the timestamps unambiguous */
1055 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
1059 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1064 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1065 p_stream->i_dts = -1;
1066 p_stream->i_length = 0;
1068 sout_AccessOutWrite( p_mux->p_access, p_og );
1072 if( p_stream->i_dts < 0 )
1074 p_stream->i_dts = p_data->i_dts;
1076 p_stream->i_length += p_data->i_length;
1079 block_Release( p_data );