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 );
56 add_shortcut( "ogg" );
57 add_shortcut( "ogm" );
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 */
188 oggds_header_t *p_oggds_header;
192 struct sout_mux_sys_t
197 int i_next_serial_no;
199 /* number of logical streams pending to be added */
202 /* logical streams pending to be deleted */
204 ogg_stream_t **pp_del_streams;
207 static void OggSetDate( block_t *, mtime_t , mtime_t );
208 static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
210 /*****************************************************************************
212 *****************************************************************************/
213 static int Open( vlc_object_t *p_this )
215 sout_mux_t *p_mux = (sout_mux_t*)p_this;
216 sout_mux_sys_t *p_sys;
218 msg_Info( p_mux, "Open" );
220 p_sys = malloc( sizeof( sout_mux_sys_t ) );
221 p_sys->i_streams = 0;
222 p_sys->i_add_streams = 0;
223 p_sys->i_del_streams = 0;
224 p_sys->pp_del_streams = 0;
226 p_mux->p_sys = p_sys;
227 p_mux->pf_control = Control;
228 p_mux->pf_addstream = AddStream;
229 p_mux->pf_delstream = DelStream;
232 /* First serial number is random.
233 * (Done like this because on win32 you need to seed the random number
234 * generator once per thread). */
235 srand( (unsigned int)time( NULL ) );
236 p_sys->i_next_serial_no = rand();
241 /*****************************************************************************
242 * Close: Finalize ogg bitstream and close muxer
243 *****************************************************************************/
244 static void Close( vlc_object_t * p_this )
246 sout_mux_t *p_mux = (sout_mux_t*)p_this;
247 sout_mux_sys_t *p_sys = p_mux->p_sys;
249 msg_Info( p_mux, "Close" );
251 if( p_sys->i_del_streams )
253 block_t *p_og = NULL;
257 /* Close the current ogg stream */
258 msg_Dbg( p_mux, "writing footer" );
259 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
261 /* Remove deleted logical streams */
262 for( i = 0; i < p_sys->i_del_streams; i++ )
264 i_dts = p_sys->pp_del_streams[i]->i_dts;
265 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
266 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
267 FREENULL( p_sys->pp_del_streams[i] );
269 FREENULL( p_sys->pp_del_streams );
270 p_sys->i_streams -= p_sys->i_del_streams;
273 OggSetDate( p_og, i_dts, 0 );
274 sout_AccessOutWrite( p_mux->p_access, p_og );
280 /*****************************************************************************
282 *****************************************************************************/
283 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
291 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
292 pb_bool = (bool*)va_arg( args, bool * );
296 case MUX_GET_ADD_STREAM_WAIT:
297 pb_bool = (bool*)va_arg( args, bool * );
302 ppsz = (char**)va_arg( args, char ** );
303 *ppsz = strdup( "application/ogg" );
310 /*****************************************************************************
311 * AddStream: Add an elementary stream to the muxed stream
312 *****************************************************************************/
313 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
315 sout_mux_sys_t *p_sys = p_mux->p_sys;
316 ogg_stream_t *p_stream;
319 msg_Dbg( p_mux, "adding input" );
321 p_input->p_sys = p_stream = malloc( sizeof( ogg_stream_t ) );
323 p_stream->i_cat = p_input->p_fmt->i_cat;
324 p_stream->i_fourcc = p_input->p_fmt->i_codec;
325 p_stream->i_serial_no = p_sys->i_next_serial_no++;
326 p_stream->i_packet_no = 0;
328 p_stream->p_oggds_header = 0;
330 switch( p_input->p_fmt->i_cat )
333 if( !p_input->p_fmt->video.i_frame_rate ||
334 !p_input->p_fmt->video.i_frame_rate_base )
336 msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
337 p_input->p_fmt->video.i_frame_rate = 25;
338 p_input->p_fmt->video.i_frame_rate_base = 1;
341 switch( p_stream->i_fourcc )
343 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
344 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
345 case VLC_FOURCC( 'D', 'I', 'V', '3' ):
346 case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
347 case VLC_FOURCC( 'W', 'M', 'V', '1' ):
348 case VLC_FOURCC( 'W', 'M', 'V', '2' ):
349 case VLC_FOURCC( 'W', 'M', 'V', '3' ):
350 case VLC_FOURCC( 'S', 'N', 'O', 'W' ):
351 case VLC_FOURCC( 'd', 'r', 'a', 'c' ):
352 p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
353 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
354 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
356 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
357 if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) )
359 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
361 else if( p_stream->i_fourcc == VLC_FOURCC( 'D', 'I', 'V', '3' ) )
363 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
367 memcpy( p_stream->p_oggds_header->sub_type,
368 &p_stream->i_fourcc, 4 );
370 SetDWLE( &p_stream->p_oggds_header->i_size,
371 sizeof( oggds_header_t ) - 1 );
372 SetQWLE( &p_stream->p_oggds_header->i_time_unit,
373 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
374 (int64_t)p_input->p_fmt->video.i_frame_rate );
375 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit, 1 );
376 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 ); /* ??? */
377 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 1024*1024 );
378 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample, 0 );
379 SetDWLE( &p_stream->p_oggds_header->header.video.i_width,
380 p_input->p_fmt->video.i_width );
381 SetDWLE( &p_stream->p_oggds_header->header.video.i_height,
382 p_input->p_fmt->video.i_height );
383 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
386 case VLC_FOURCC( 't', 'h', 'e', 'o' ):
387 msg_Dbg( p_mux, "theora stream" );
391 FREENULL( p_input->p_sys );
397 switch( p_stream->i_fourcc )
399 case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
400 msg_Dbg( p_mux, "vorbis stream" );
403 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
404 msg_Dbg( p_mux, "speex stream" );
407 case VLC_FOURCC( 'f', 'l', 'a', 'c' ):
408 msg_Dbg( p_mux, "flac stream" );
412 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
413 if( i_tag == WAVE_FORMAT_UNKNOWN )
415 FREENULL( p_input->p_sys );
419 p_stream->p_oggds_header =
420 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
421 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
422 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
424 SetDWLE( &p_stream->p_oggds_header->i_size,
425 sizeof( oggds_header_t ) - 1 + p_input->p_fmt->i_extra );
427 if( p_input->p_fmt->i_extra )
429 memcpy( &p_stream->p_oggds_header[1],
430 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
433 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
435 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
436 sprintf( p_stream->p_oggds_header->sub_type, "%-x", i_tag );
438 SetQWLE( &p_stream->p_oggds_header->i_time_unit, INT64_C(10000000) );
439 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 );
440 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 30*1024 );
441 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit,
442 p_input->p_fmt->audio.i_rate );
443 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample,
444 p_input->p_fmt->audio.i_bitspersample );
445 SetDWLE( &p_stream->p_oggds_header->header.audio.i_channels,
446 p_input->p_fmt->audio.i_channels );
447 SetDWLE( &p_stream->p_oggds_header->header.audio.i_block_align,
448 p_input->p_fmt->audio.i_blockalign );
449 SetDWLE( &p_stream->p_oggds_header->header.audio.i_avgbytespersec,
450 p_input->p_fmt->i_bitrate / 8);
451 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
457 switch( p_stream->i_fourcc )
459 case VLC_FOURCC( 's', 'u','b', 't' ):
460 p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
461 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
462 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
464 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
465 msg_Dbg( p_mux, "subtitles stream" );
469 FREENULL( p_input->p_sys );
474 FREENULL( p_input->p_sys );
478 p_stream->b_new = true;
480 p_sys->i_add_streams++;
485 /*****************************************************************************
486 * DelStream: Delete an elementary stream from the muxed stream
487 *****************************************************************************/
488 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
490 sout_mux_sys_t *p_sys = p_mux->p_sys;
491 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
494 msg_Dbg( p_mux, "removing input" );
496 /* flush all remaining data */
499 if( !p_stream->b_new )
501 while( block_FifoCount( p_input->p_fifo ) )
502 MuxBlock( p_mux, p_input );
505 if( !p_stream->b_new &&
506 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
508 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
509 sout_AccessOutWrite( p_mux->p_access, p_og );
512 /* move input in delete queue */
513 if( !p_stream->b_new )
515 p_sys->pp_del_streams = realloc( p_sys->pp_del_streams,
516 (p_sys->i_del_streams + 1) *
517 sizeof(ogg_stream_t *) );
518 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
522 /* wasn't already added so get rid of it */
523 FREENULL( p_stream->p_oggds_header );
524 FREENULL( p_stream );
525 p_sys->i_add_streams--;
529 p_input->p_sys = NULL;
534 /*****************************************************************************
535 * Ogg bitstream manipulation routines
536 *****************************************************************************/
537 static block_t *OggStreamFlush( sout_mux_t *p_mux,
538 ogg_stream_state *p_os, mtime_t i_pts )
540 block_t *p_og, *p_og_first = NULL;
543 while( ogg_stream_flush( p_os, &og ) )
546 p_og = block_New( p_mux, og.header_len + og.body_len );
548 memcpy( p_og->p_buffer, og.header, og.header_len );
549 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
554 i_pts = 0; // write it only once
556 block_ChainAppend( &p_og_first, p_og );
562 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
563 ogg_stream_state *p_os, mtime_t i_pts )
565 block_t *p_og, *p_og_first = NULL;
568 while( ogg_stream_pageout( 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 them only once
581 block_ChainAppend( &p_og_first, p_og );
587 static block_t *OggCreateHeader( sout_mux_t *p_mux )
589 block_t *p_hdr = NULL;
590 block_t *p_og = NULL;
595 /* Write header for each stream. All b_o_s (beginning of stream) packets
596 * must appear first in the ogg stream so we take care of them first. */
597 for( i = 0; i < p_mux->i_nb_inputs; i++ )
599 sout_input_t *p_input = p_mux->pp_inputs[i];
600 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
601 p_stream->b_new = false;
603 msg_Dbg( p_mux, "creating header for %4.4s",
604 (char *)&p_stream->i_fourcc );
606 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
607 p_stream->i_packet_no = 0;
609 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
610 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
611 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
613 /* First packet in order: vorbis/speex/theora info */
614 p_extra = p_input->p_fmt->p_extra;
615 i_extra = p_input->p_fmt->i_extra;
617 op.bytes = *(p_extra++) << 8;
618 op.bytes |= (*(p_extra++) & 0xFF);
620 i_extra -= (op.bytes + 2);
623 msg_Err( p_mux, "header data corrupted");
630 op.packetno = p_stream->i_packet_no++;
631 ogg_stream_packetin( &p_stream->os, &op );
632 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
634 /* Get keyframe_granule_shift for theora granulepos calculation */
635 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
637 int i_keyframe_frequency_force =
638 1 << ((op.packet[40] << 6 >> 3) | (op.packet[41] >> 5));
640 /* granule_shift = i_log( frequency_force -1 ) */
641 p_stream->i_keyframe_granule_shift = 0;
642 i_keyframe_frequency_force--;
643 while( i_keyframe_frequency_force )
645 p_stream->i_keyframe_granule_shift++;
646 i_keyframe_frequency_force >>= 1;
650 else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
652 /* flac stream marker (yeah, only that in the 1st packet) */
653 op.packet = (unsigned char *)"fLaC";
658 op.packetno = p_stream->i_packet_no++;
659 ogg_stream_packetin( &p_stream->os, &op );
660 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
662 else if( p_stream->p_oggds_header )
665 op.packet = (uint8_t*)p_stream->p_oggds_header;
666 op.bytes = p_stream->p_oggds_header->i_size + 1;
670 op.packetno = p_stream->i_packet_no++;
671 ogg_stream_packetin( &p_stream->os, &op );
672 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
675 block_ChainAppend( &p_hdr, p_og );
678 /* Take care of the non b_o_s headers */
679 for( i = 0; i < p_mux->i_nb_inputs; i++ )
681 sout_input_t *p_input = p_mux->pp_inputs[i];
682 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
684 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
685 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
686 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
688 /* Special case, headers are already there in the incoming stream.
689 * We need to gather them an mark them as headers. */
692 if( p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ) j = 1;
694 p_extra = p_input->p_fmt->p_extra;
695 i_extra = p_input->p_fmt->i_extra;
698 op.bytes = *(p_extra++) << 8;
699 op.bytes |= (*(p_extra++) & 0xFF);
702 i_extra -= (op.bytes + 2);
706 op.bytes = *(p_extra++) << 8;
707 op.bytes |= (*(p_extra++) & 0xFF);
710 i_extra -= (op.bytes + 2);
713 msg_Err( p_mux, "header data corrupted");
720 op.packetno = p_stream->i_packet_no++;
721 ogg_stream_packetin( &p_stream->os, &op );
723 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
724 block_ChainAppend( &p_hdr, p_og );
727 else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
733 com[0] = PACKET_TYPE_COMMENT;
734 i_com = snprintf( (char *)(com+1), 127,
735 PACKAGE_VERSION" stream output" )
742 op.packetno = p_stream->i_packet_no++;
743 ogg_stream_packetin( &p_stream->os, &op );
744 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
745 block_ChainAppend( &p_hdr, p_og );
748 /* Special case for mp4v and flac */
749 if( ( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) ||
750 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ) &&
751 p_input->p_fmt->i_extra )
753 /* Send a packet with the VOL data for mp4v
754 * or STREAMINFO for flac */
755 msg_Dbg( p_mux, "writing extra data" );
756 op.bytes = p_input->p_fmt->i_extra;
757 op.packet = p_input->p_fmt->p_extra;
758 if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
760 /* Skip the flac stream marker */
767 op.packetno = p_stream->i_packet_no++;
768 ogg_stream_packetin( &p_stream->os, &op );
769 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
770 block_ChainAppend( &p_hdr, p_og );
774 /* set HEADER flag */
775 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
777 p_og->i_flags |= BLOCK_FLAG_HEADER;
782 static block_t *OggCreateFooter( sout_mux_t *p_mux )
784 sout_mux_sys_t *p_sys = p_mux->p_sys;
785 block_t *p_hdr = NULL;
790 /* flush all remaining data */
791 for( i = 0; i < p_mux->i_nb_inputs; i++ )
793 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
795 /* skip newly added streams */
796 if( p_stream->b_new ) continue;
798 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
800 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
801 sout_AccessOutWrite( p_mux->p_access, p_og );
805 /* Write eos packets for each stream. */
806 for( i = 0; i < p_mux->i_nb_inputs; i++ )
808 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
810 /* skip newly added streams */
811 if( p_stream->b_new ) continue;
818 op.packetno = p_stream->i_packet_no++;
819 ogg_stream_packetin( &p_stream->os, &op );
821 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
822 block_ChainAppend( &p_hdr, p_og );
823 ogg_stream_clear( &p_stream->os );
826 for( i = 0; i < p_sys->i_del_streams; i++ )
833 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
834 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
836 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
837 block_ChainAppend( &p_hdr, p_og );
838 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
844 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
850 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
854 i_delta = i_length / i_count;
856 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
858 p_tmp->i_dts = i_dts;
859 p_tmp->i_length = i_delta;
865 /*****************************************************************************
866 * Mux: multiplex available data in input fifos into the Ogg bitstream
867 *****************************************************************************/
868 static int Mux( sout_mux_t *p_mux )
870 sout_mux_sys_t *p_sys = p_mux->p_sys;
871 block_t *p_og = NULL;
875 if( p_sys->i_add_streams || p_sys->i_del_streams )
877 /* Open new ogg stream */
878 if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
880 msg_Dbg( p_mux, "waiting for data..." );
884 if( p_sys->i_streams )
886 /* Close current ogg stream */
889 msg_Dbg( p_mux, "writing footer" );
890 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
892 /* Remove deleted logical streams */
893 for( i = 0; i < p_sys->i_del_streams; i++ )
895 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
896 FREENULL( p_sys->pp_del_streams[i] );
898 FREENULL( p_sys->pp_del_streams );
899 p_sys->i_streams = 0;
902 msg_Dbg( p_mux, "writing header" );
903 p_sys->i_start_dts = i_dts;
904 p_sys->i_streams = p_mux->i_nb_inputs;
905 p_sys->i_del_streams = 0;
906 p_sys->i_add_streams = 0;
907 block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
909 /* Write header and/or footer */
910 OggSetDate( p_og, i_dts, 0 );
911 sout_AccessOutWrite( p_mux->p_access, p_og );
917 if( MuxGetStream( p_mux, &i_stream, 0 ) < 0 ) return VLC_SUCCESS;
918 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
924 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
926 sout_mux_sys_t *p_sys = p_mux->p_sys;
927 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
928 block_t *p_data = block_FifoGet( p_input->p_fifo );
929 block_t *p_og = NULL;
932 if( p_stream->i_fourcc != VLC_FOURCC( 'v', 'o', 'r', 'b' ) &&
933 p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
934 p_stream->i_fourcc != VLC_FOURCC( 's', 'p', 'x', ' ' ) &&
935 p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) )
937 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
938 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
941 op.packet = p_data->p_buffer;
942 op.bytes = p_data->i_buffer;
945 op.packetno = p_stream->i_packet_no++;
947 if( p_stream->i_cat == AUDIO_ES )
949 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
950 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ||
951 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
953 /* number of sample from begining + current packet */
955 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
956 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
958 else if( p_stream->p_oggds_header )
960 /* number of sample from begining */
961 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
962 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
965 else if( p_stream->i_cat == VIDEO_ES )
967 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
969 /* FIXME, we assume only keyframes */
970 op.granulepos = ( ( p_data->i_dts - p_sys->i_start_dts ) *
971 p_input->p_fmt->video.i_frame_rate /
972 p_input->p_fmt->video.i_frame_rate_base /
973 INT64_C(1000000) ) << p_stream->i_keyframe_granule_shift;
975 else if( p_stream->p_oggds_header )
976 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
977 p_stream->p_oggds_header->i_time_unit;
979 else if( p_stream->i_cat == SPU_ES )
981 /* granulepos is in milisec */
982 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
985 ogg_stream_packetin( &p_stream->os, &op );
987 if( p_stream->i_cat == SPU_ES ||
988 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
990 /* Subtitles or Speex packets are quite small so they
991 * need to be flushed to be sent on time */
992 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
996 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1001 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1002 p_stream->i_dts = -1;
1003 p_stream->i_length = 0;
1005 sout_AccessOutWrite( p_mux->p_access, p_og );
1009 if( p_stream->i_dts < 0 )
1011 p_stream->i_dts = p_data->i_dts;
1013 p_stream->i_length += p_data->i_length;
1016 block_Release( p_data );