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 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
36 #include <vlc_block.h>
37 #include <vlc_codecs.h>
41 /*****************************************************************************
43 *****************************************************************************/
44 static int Open ( vlc_object_t * );
45 static void Close ( vlc_object_t * );
48 set_description( N_("Ogg/OGM muxer") )
49 set_capability( "sout mux", 10 )
50 set_category( CAT_SOUT )
51 set_subcategory( SUBCAT_SOUT_MUX )
54 set_callbacks( Open, Close )
58 /*****************************************************************************
60 *****************************************************************************/
61 static int Control ( sout_mux_t *, int, va_list );
62 static int AddStream( sout_mux_t *, sout_input_t * );
63 static int DelStream( sout_mux_t *, sout_input_t * );
64 static int Mux ( sout_mux_t * );
65 static int MuxBlock ( sout_mux_t *, sout_input_t * );
67 static block_t *OggCreateHeader( sout_mux_t * );
68 static block_t *OggCreateFooter( sout_mux_t * );
70 /*****************************************************************************
72 *****************************************************************************/
74 /* Structures used for OggDS headers used in ogm files */
76 #define PACKET_TYPE_HEADER 0x01
77 #define PACKET_TYPE_COMMENT 0x03
78 #define PACKET_IS_SYNCPOINT 0x08
81 #ifdef HAVE_ATTRIBUTE_PACKED
82 __attribute__((__packed__))
87 } oggds_header_video_t;
90 #ifdef HAVE_ATTRIBUTE_PACKED
91 __attribute__((__packed__))
95 int16_t i_block_align;
96 int32_t i_avgbytespersec;
97 } oggds_header_audio_t;
100 #ifdef HAVE_ATTRIBUTE_PACKED
101 __attribute__((__packed__))
104 uint8_t i_packet_type;
112 int64_t i_samples_per_unit;
113 int32_t i_default_len;
115 int32_t i_buffer_size;
116 int16_t i_bits_per_sample;
118 int16_t i_padding_0; /* Because the original is using MSVC packing style */
122 oggds_header_video_t video;
123 oggds_header_audio_t audio;
126 int32_t i_padding_1; /* Because the original is using MSVC packing style */
131 * TODO move this function to src/stream_output.c (used by nearly all muxers)
133 static int MuxGetStream( sout_mux_t *p_mux, int *pi_stream, mtime_t *pi_dts )
138 for( int i = 0; i < p_mux->i_nb_inputs; i++ )
140 block_fifo_t *p_fifo;
142 p_fifo = p_mux->pp_inputs[i]->p_fifo;
144 /* We don't really need to have anything in the SPU fifo */
145 if( p_mux->pp_inputs[i]->p_fmt->i_cat == SPU_ES &&
146 block_FifoCount( p_fifo ) == 0 ) continue;
148 if( block_FifoCount( p_fifo ) )
152 p_buf = block_FifoShow( p_fifo );
153 if( i_stream < 0 || p_buf->i_dts < i_dts )
155 i_dts = p_buf->i_dts;
162 if( pi_stream ) *pi_stream = i_stream;
163 if( pi_dts ) *pi_dts = i_dts;
167 /*****************************************************************************
168 * Definitions of structures and functions used by this plugins
169 *****************************************************************************/
181 int i_keyframe_granule_shift; /* Theora only */
182 int i_last_keyframe; /* dirac and theora */
183 int i_num_frames; /* Theora only */
184 uint64_t u_last_granulepos; /* Used for correct EOS page */
185 int64_t i_num_keyframes;
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 ) );
223 p_sys->i_streams = 0;
224 p_sys->i_add_streams = 0;
225 p_sys->i_del_streams = 0;
226 p_sys->pp_del_streams = 0;
228 p_mux->p_sys = p_sys;
229 p_mux->pf_control = Control;
230 p_mux->pf_addstream = AddStream;
231 p_mux->pf_delstream = DelStream;
234 /* First serial number is random.
235 * (Done like this because on win32 you need to seed the random number
236 * generator once per thread). */
237 srand( (unsigned int)time( NULL ) );
238 p_sys->i_next_serial_no = rand();
243 /*****************************************************************************
244 * Close: Finalize ogg bitstream and close muxer
245 *****************************************************************************/
246 static void Close( vlc_object_t * p_this )
248 sout_mux_t *p_mux = (sout_mux_t*)p_this;
249 sout_mux_sys_t *p_sys = p_mux->p_sys;
251 msg_Info( p_mux, "Close" );
253 if( p_sys->i_del_streams )
255 block_t *p_og = NULL;
256 mtime_t i_dts = p_sys->pp_del_streams[p_sys->i_del_streams - 1]->i_dts;
258 /* Close the current ogg stream */
259 msg_Dbg( p_mux, "writing footer" );
260 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
262 /* Remove deleted logical streams */
263 for(int i = 0; i < p_sys->i_del_streams; i++ )
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 = calloc( 1, sizeof( ogg_stream_t ) );
325 p_stream->i_cat = p_input->p_fmt->i_cat;
326 p_stream->i_fourcc = p_input->p_fmt->i_codec;
327 p_stream->i_serial_no = p_sys->i_next_serial_no++;
328 p_stream->i_packet_no = 0;
329 p_stream->i_last_keyframe = 0;
330 p_stream->i_num_keyframes = 0;
331 p_stream->i_num_frames = 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 )
356 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
357 if( !p_stream->p_oggds_header )
362 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
364 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
365 if( p_stream->i_fourcc == VLC_CODEC_MP4V )
367 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
369 else if( p_stream->i_fourcc == VLC_CODEC_DIV3 )
371 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
375 memcpy( p_stream->p_oggds_header->sub_type,
376 &p_stream->i_fourcc, 4 );
378 SetDWLE( &p_stream->p_oggds_header->i_size,
379 sizeof( oggds_header_t ) - 1 );
380 SetQWLE( &p_stream->p_oggds_header->i_time_unit,
381 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
382 (int64_t)p_input->p_fmt->video.i_frame_rate );
383 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit, 1 );
384 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 ); /* ??? */
385 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 1024*1024 );
386 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample, 0 );
387 SetDWLE( &p_stream->p_oggds_header->header.video.i_width,
388 p_input->p_fmt->video.i_width );
389 SetDWLE( &p_stream->p_oggds_header->header.video.i_height,
390 p_input->p_fmt->video.i_height );
391 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
394 case VLC_CODEC_DIRAC:
395 msg_Dbg( p_mux, "dirac stream" );
398 case VLC_CODEC_THEORA:
399 msg_Dbg( p_mux, "theora stream" );
403 FREENULL( p_input->p_sys );
409 switch( p_stream->i_fourcc )
411 case VLC_CODEC_VORBIS:
412 msg_Dbg( p_mux, "vorbis stream" );
415 case VLC_CODEC_SPEEX:
416 msg_Dbg( p_mux, "speex stream" );
420 msg_Dbg( p_mux, "flac stream" );
424 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
425 if( i_tag == WAVE_FORMAT_UNKNOWN )
427 FREENULL( p_input->p_sys );
431 p_stream->p_oggds_header =
432 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
433 if( !p_stream->p_oggds_header )
438 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
439 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
441 SetDWLE( &p_stream->p_oggds_header->i_size,
442 sizeof( oggds_header_t ) - 1 + p_input->p_fmt->i_extra );
444 if( p_input->p_fmt->i_extra )
446 memcpy( &p_stream->p_oggds_header[1],
447 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
450 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
452 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
453 sprintf( p_stream->p_oggds_header->sub_type, "%-x", i_tag );
455 SetQWLE( &p_stream->p_oggds_header->i_time_unit, INT64_C(10000000) );
456 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 );
457 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 30*1024 );
458 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit,
459 p_input->p_fmt->audio.i_rate );
460 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample,
461 p_input->p_fmt->audio.i_bitspersample );
462 SetDWLE( &p_stream->p_oggds_header->header.audio.i_channels,
463 p_input->p_fmt->audio.i_channels );
464 SetDWLE( &p_stream->p_oggds_header->header.audio.i_block_align,
465 p_input->p_fmt->audio.i_blockalign );
466 SetDWLE( &p_stream->p_oggds_header->header.audio.i_avgbytespersec,
467 p_input->p_fmt->i_bitrate / 8);
468 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
474 switch( p_stream->i_fourcc )
477 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
478 if( !p_stream->p_oggds_header )
483 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
485 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
486 msg_Dbg( p_mux, "subtitles stream" );
490 FREENULL( p_input->p_sys );
495 FREENULL( p_input->p_sys );
499 p_stream->b_new = true;
501 p_sys->i_add_streams++;
506 /*****************************************************************************
507 * DelStream: Delete an elementary stream from the muxed stream
508 *****************************************************************************/
509 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
511 sout_mux_sys_t *p_sys = p_mux->p_sys;
512 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
515 msg_Dbg( p_mux, "removing input" );
517 /* flush all remaining data */
520 if( !p_stream->b_new )
522 while( block_FifoCount( p_input->p_fifo ) )
523 MuxBlock( p_mux, p_input );
526 if( !p_stream->b_new &&
527 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
529 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
530 sout_AccessOutWrite( p_mux->p_access, p_og );
533 /* move input in delete queue */
534 if( !p_stream->b_new )
536 p_sys->pp_del_streams = xrealloc( p_sys->pp_del_streams,
537 (p_sys->i_del_streams + 1) * sizeof(ogg_stream_t *) );
538 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
542 /* wasn't already added so get rid of it */
543 FREENULL( p_stream->p_oggds_header );
544 FREENULL( p_stream );
545 p_sys->i_add_streams--;
549 p_input->p_sys = NULL;
554 /*****************************************************************************
555 * Ogg bitstream manipulation routines
556 *****************************************************************************/
557 static block_t *OggStreamGetPage( sout_mux_t *p_mux,
558 ogg_stream_state *p_os, mtime_t i_pts,
562 block_t *p_og, *p_og_first = NULL;
564 int (*pager)( ogg_stream_state*, ogg_page* ) = flush ? ogg_stream_flush : ogg_stream_pageout;
566 while( pager( 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 *OggStreamFlush( sout_mux_t *p_mux,
586 ogg_stream_state *p_os, mtime_t i_pts )
588 return OggStreamGetPage( p_mux, p_os, i_pts, true );
591 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
592 ogg_stream_state *p_os, mtime_t i_pts )
594 return OggStreamGetPage( p_mux, p_os, i_pts, false );
597 static block_t *OggCreateHeader( sout_mux_t *p_mux )
599 block_t *p_hdr = NULL;
600 block_t *p_og = NULL;
605 /* Write header for each stream. All b_o_s (beginning of stream) packets
606 * must appear first in the ogg stream so we take care of them first. */
607 for( int pass = 0; pass < 2; pass++ )
609 for( i = 0; i < p_mux->i_nb_inputs; i++ )
611 sout_input_t *p_input = p_mux->pp_inputs[i];
612 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
614 bool video = ( p_stream->i_fourcc == VLC_CODEC_THEORA || p_stream->i_fourcc == VLC_CODEC_DIRAC );
615 if( ( ( pass == 0 && !video ) || ( pass == 1 && video ) ) )
618 msg_Dbg( p_mux, "creating header for %4.4s",
619 (char *)&p_stream->i_fourcc );
621 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
622 p_stream->b_new = false;
623 p_stream->i_packet_no = 0;
625 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
626 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
627 p_stream->i_fourcc == VLC_CODEC_THEORA )
629 /* First packet in order: vorbis/speex/theora info */
630 p_extra = p_input->p_fmt->p_extra;
631 i_extra = p_input->p_fmt->i_extra;
633 op.bytes = *(p_extra++) << 8;
634 op.bytes |= (*(p_extra++) & 0xFF);
636 i_extra -= (op.bytes + 2);
639 msg_Err( p_mux, "header data corrupted");
646 op.packetno = p_stream->i_packet_no++;
647 ogg_stream_packetin( &p_stream->os, &op );
648 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
650 /* Get keyframe_granule_shift for theora granulepos calculation */
651 if( p_stream->i_fourcc == VLC_CODEC_THEORA )
653 p_stream->i_keyframe_granule_shift =
654 ( (op.packet[40] & 0x03) << 3 ) | ( (op.packet[41] & 0xe0) >> 5 );
657 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
659 op.packet = p_input->p_fmt->p_extra;
660 op.bytes = p_input->p_fmt->i_extra;
664 op.packetno = p_stream->i_packet_no++;
665 ogg_stream_packetin( &p_stream->os, &op );
666 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
668 else if( p_stream->i_fourcc == VLC_CODEC_FLAC )
670 /* flac stream marker (yeah, only that in the 1st packet) */
671 op.packet = (unsigned char *)"fLaC";
676 op.packetno = p_stream->i_packet_no++;
677 ogg_stream_packetin( &p_stream->os, &op );
678 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
680 else if( p_stream->p_oggds_header )
683 op.packet = (uint8_t*)p_stream->p_oggds_header;
684 op.bytes = p_stream->p_oggds_header->i_size + 1;
688 op.packetno = p_stream->i_packet_no++;
689 ogg_stream_packetin( &p_stream->os, &op );
690 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
693 block_ChainAppend( &p_hdr, p_og );
697 /* Take care of the non b_o_s headers */
698 for( i = 0; i < p_mux->i_nb_inputs; i++ )
700 sout_input_t *p_input = p_mux->pp_inputs[i];
701 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
703 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
704 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
705 p_stream->i_fourcc == VLC_CODEC_THEORA )
707 /* Special case, headers are already there in the incoming stream.
708 * We need to gather them an mark them as headers. */
711 if( p_stream->i_fourcc == VLC_CODEC_SPEEX ) j = 1;
713 p_extra = p_input->p_fmt->p_extra;
714 i_extra = p_input->p_fmt->i_extra;
717 op.bytes = *(p_extra++) << 8;
718 op.bytes |= (*(p_extra++) & 0xFF);
721 i_extra -= (op.bytes + 2);
725 op.bytes = *(p_extra++) << 8;
726 op.bytes |= (*(p_extra++) & 0xFF);
729 i_extra -= (op.bytes + 2);
732 msg_Err( p_mux, "header data corrupted");
739 op.packetno = p_stream->i_packet_no++;
740 ogg_stream_packetin( &p_stream->os, &op );
743 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
745 p_og = OggStreamPageOut( p_mux, &p_stream->os, 0 );
747 block_ChainAppend( &p_hdr, p_og );
750 else if( p_stream->i_fourcc != VLC_CODEC_FLAC &&
751 p_stream->i_fourcc != VLC_CODEC_DIRAC )
757 com[0] = PACKET_TYPE_COMMENT;
758 i_com = snprintf( (char *)(com+1), 127,
759 PACKAGE_VERSION" stream output" )
766 op.packetno = p_stream->i_packet_no++;
767 ogg_stream_packetin( &p_stream->os, &op );
768 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
769 block_ChainAppend( &p_hdr, p_og );
772 /* Special case for mp4v and flac */
773 if( ( p_stream->i_fourcc == VLC_CODEC_MP4V ||
774 p_stream->i_fourcc == VLC_CODEC_FLAC ) &&
775 p_input->p_fmt->i_extra )
777 /* Send a packet with the VOL data for mp4v
778 * or STREAMINFO for flac */
779 msg_Dbg( p_mux, "writing extra data" );
780 op.bytes = p_input->p_fmt->i_extra;
781 op.packet = p_input->p_fmt->p_extra;
782 if( p_stream->i_fourcc == VLC_CODEC_FLAC )
784 /* Skip the flac stream marker */
791 op.packetno = p_stream->i_packet_no++;
792 ogg_stream_packetin( &p_stream->os, &op );
793 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
794 block_ChainAppend( &p_hdr, p_og );
798 /* set HEADER flag */
799 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
801 p_og->i_flags |= BLOCK_FLAG_HEADER;
806 static block_t *OggCreateFooter( sout_mux_t *p_mux )
808 sout_mux_sys_t *p_sys = p_mux->p_sys;
809 block_t *p_hdr = NULL;
814 /* flush all remaining data */
815 for( i = 0; i < p_mux->i_nb_inputs; i++ )
817 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
819 /* skip newly added streams */
820 if( p_stream->b_new ) continue;
822 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
824 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
825 sout_AccessOutWrite( p_mux->p_access, p_og );
829 /* Write eos packets for each stream. */
830 for( i = 0; i < p_mux->i_nb_inputs; i++ )
832 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
834 /* skip newly added streams */
835 if( p_stream->b_new ) continue;
841 op.granulepos = p_stream->u_last_granulepos;
842 op.packetno = p_stream->i_packet_no++;
843 ogg_stream_packetin( &p_stream->os, &op );
845 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
846 block_ChainAppend( &p_hdr, p_og );
847 ogg_stream_clear( &p_stream->os );
850 for( i = 0; i < p_sys->i_del_streams; i++ )
856 op.granulepos = p_sys->pp_del_streams[i]->u_last_granulepos;
857 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
858 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
860 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
861 block_ChainAppend( &p_hdr, p_og );
862 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
868 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
874 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
879 if( i_count == 0 ) return; /* ignore. */
881 i_delta = i_length / i_count;
883 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
885 p_tmp->i_dts = i_dts;
886 p_tmp->i_length = i_delta;
892 /*****************************************************************************
893 * Mux: multiplex available data in input fifos into the Ogg bitstream
894 *****************************************************************************/
895 static int Mux( sout_mux_t *p_mux )
897 sout_mux_sys_t *p_sys = p_mux->p_sys;
898 block_t *p_og = NULL;
902 if( p_sys->i_add_streams || p_sys->i_del_streams )
904 /* Open new ogg stream */
905 if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
907 msg_Dbg( p_mux, "waiting for data..." );
911 if( p_sys->i_streams )
913 /* Close current ogg stream */
916 msg_Dbg( p_mux, "writing footer" );
917 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
919 /* Remove deleted logical streams */
920 for( i = 0; i < p_sys->i_del_streams; i++ )
922 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
923 FREENULL( p_sys->pp_del_streams[i] );
925 FREENULL( p_sys->pp_del_streams );
926 p_sys->i_streams = 0;
929 msg_Dbg( p_mux, "writing header" );
930 p_sys->i_start_dts = i_dts;
931 p_sys->i_streams = p_mux->i_nb_inputs;
932 p_sys->i_del_streams = 0;
933 p_sys->i_add_streams = 0;
934 block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
936 /* Write header and/or footer */
937 OggSetDate( p_og, i_dts, 0 );
938 sout_AccessOutWrite( p_mux->p_access, p_og );
944 if( MuxGetStream( p_mux, &i_stream, 0 ) < 0 ) return VLC_SUCCESS;
945 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
951 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
953 sout_mux_sys_t *p_sys = p_mux->p_sys;
954 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
955 block_t *p_data = block_FifoGet( p_input->p_fifo );
956 block_t *p_og = NULL;
959 if( p_stream->i_fourcc != VLC_CODEC_VORBIS &&
960 p_stream->i_fourcc != VLC_CODEC_FLAC &&
961 p_stream->i_fourcc != VLC_CODEC_SPEEX &&
962 p_stream->i_fourcc != VLC_CODEC_THEORA &&
963 p_stream->i_fourcc != VLC_CODEC_DIRAC )
965 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
966 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
969 op.packet = p_data->p_buffer;
970 op.bytes = p_data->i_buffer;
973 op.packetno = p_stream->i_packet_no++;
975 if( p_stream->i_cat == AUDIO_ES )
977 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
978 p_stream->i_fourcc == VLC_CODEC_FLAC ||
979 p_stream->i_fourcc == VLC_CODEC_SPEEX )
981 /* number of sample from begining + current packet */
983 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
984 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
986 else if( p_stream->p_oggds_header )
988 /* number of sample from begining */
989 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
990 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
993 else if( p_stream->i_cat == VIDEO_ES )
995 if( p_stream->i_fourcc == VLC_CODEC_THEORA )
997 p_stream->i_num_frames++;
998 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1000 p_stream->i_num_keyframes++;
1001 p_stream->i_last_keyframe = p_stream->i_num_frames;
1004 op.granulepos = (p_stream->i_last_keyframe << p_stream->i_keyframe_granule_shift )
1005 | (p_stream->i_num_frames-p_stream->i_last_keyframe);
1007 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
1009 mtime_t dt = (p_data->i_dts - p_sys->i_start_dts + 1)
1010 * p_input->p_fmt->video.i_frame_rate *2
1011 / p_input->p_fmt->video.i_frame_rate_base
1013 mtime_t delay = (p_data->i_pts - p_data->i_dts + 1)
1014 * p_input->p_fmt->video.i_frame_rate *2
1015 / p_input->p_fmt->video.i_frame_rate_base
1017 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1018 p_stream->i_last_keyframe = dt;
1019 mtime_t dist = dt - p_stream->i_last_keyframe;
1020 op.granulepos = dt << 31 | (dist&0xff00) << 14
1021 | (delay&0x1fff) << 9 | (dist&0xff);
1023 else if( p_stream->p_oggds_header )
1024 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
1025 p_stream->p_oggds_header->i_time_unit;
1027 else if( p_stream->i_cat == SPU_ES )
1029 /* granulepos is in millisec */
1030 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
1033 p_stream->u_last_granulepos = op.granulepos;
1034 ogg_stream_packetin( &p_stream->os, &op );
1036 if( p_stream->i_cat == SPU_ES ||
1037 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
1038 p_stream->i_fourcc == VLC_CODEC_DIRAC )
1040 /* Subtitles or Speex packets are quite small so they
1041 * need to be flushed to be sent on time */
1042 /* The OggDirac mapping suggests ever so strongly that a
1043 * page flush occurs after each OggDirac packet, so to make
1044 * the timestamps unambiguous */
1045 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
1049 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1054 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1055 p_stream->i_dts = -1;
1056 p_stream->i_length = 0;
1058 sout_AccessOutWrite( p_mux->p_access, p_og );
1062 if( p_stream->i_dts < 0 )
1064 p_stream->i_dts = p_data->i_dts;
1066 p_stream->i_length += p_data->i_length;
1069 block_Release( p_data );