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>
40 #include "../demux/xiph.h"
44 /*****************************************************************************
46 *****************************************************************************/
47 static int Open ( vlc_object_t * );
48 static void Close ( vlc_object_t * );
51 set_description( N_("Ogg/OGM muxer") )
52 set_capability( "sout mux", 10 )
53 set_category( CAT_SOUT )
54 set_subcategory( SUBCAT_SOUT_MUX )
55 add_shortcut( "ogg", "ogm" )
56 set_callbacks( Open, Close )
60 /*****************************************************************************
62 *****************************************************************************/
63 static int Control ( sout_mux_t *, int, va_list );
64 static int AddStream( sout_mux_t *, sout_input_t * );
65 static int DelStream( sout_mux_t *, sout_input_t * );
66 static int Mux ( sout_mux_t * );
67 static int MuxBlock ( sout_mux_t *, sout_input_t * );
69 static block_t *OggCreateHeader( sout_mux_t * );
70 static block_t *OggCreateFooter( sout_mux_t * );
72 /*****************************************************************************
74 *****************************************************************************/
76 /* Structures used for OggDS headers used in ogm files */
78 #define PACKET_TYPE_HEADER 0x01
79 #define PACKET_TYPE_COMMENT 0x03
80 #define PACKET_IS_SYNCPOINT 0x08
83 #ifdef HAVE_ATTRIBUTE_PACKED
84 __attribute__((__packed__))
89 } oggds_header_video_t;
92 #ifdef HAVE_ATTRIBUTE_PACKED
93 __attribute__((__packed__))
97 int16_t i_block_align;
98 int32_t i_avgbytespersec;
99 } oggds_header_audio_t;
102 #ifdef HAVE_ATTRIBUTE_PACKED
103 __attribute__((__packed__))
106 uint8_t i_packet_type;
114 int64_t i_samples_per_unit;
115 int32_t i_default_len;
117 int32_t i_buffer_size;
118 int16_t i_bits_per_sample;
120 int16_t i_padding_0; /* Because the original is using MSVC packing style */
124 oggds_header_video_t video;
125 oggds_header_audio_t audio;
128 int32_t i_padding_1; /* Because the original is using MSVC packing style */
132 /*****************************************************************************
133 * Definitions of structures and functions used by this plugins
134 *****************************************************************************/
146 int i_keyframe_granule_shift; /* Theora only */
147 int i_last_keyframe; /* dirac and theora */
148 int i_num_frames; /* Theora only */
149 uint64_t u_last_granulepos; /* Used for correct EOS page */
150 int64_t i_num_keyframes;
153 oggds_header_t *p_oggds_header;
157 struct sout_mux_sys_t
162 int i_next_serial_no;
164 /* number of logical streams pending to be added */
167 /* logical streams pending to be deleted */
169 ogg_stream_t **pp_del_streams;
172 static void OggSetDate( block_t *, mtime_t , mtime_t );
173 static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
175 /*****************************************************************************
177 *****************************************************************************/
178 static int Open( vlc_object_t *p_this )
180 sout_mux_t *p_mux = (sout_mux_t*)p_this;
181 sout_mux_sys_t *p_sys;
183 msg_Info( p_mux, "Open" );
185 p_sys = malloc( sizeof( sout_mux_sys_t ) );
188 p_sys->i_streams = 0;
189 p_sys->i_add_streams = 0;
190 p_sys->i_del_streams = 0;
191 p_sys->pp_del_streams = 0;
193 p_mux->p_sys = p_sys;
194 p_mux->pf_control = Control;
195 p_mux->pf_addstream = AddStream;
196 p_mux->pf_delstream = DelStream;
199 /* First serial number is random.
200 * (Done like this because on win32 you need to seed the random number
201 * generator once per thread). */
203 vlc_rand_bytes(&r, sizeof(r));
204 p_sys->i_next_serial_no = r & INT_MAX;
209 /*****************************************************************************
210 * Close: Finalize ogg bitstream and close muxer
211 *****************************************************************************/
212 static void Close( vlc_object_t * p_this )
214 sout_mux_t *p_mux = (sout_mux_t*)p_this;
215 sout_mux_sys_t *p_sys = p_mux->p_sys;
217 msg_Info( p_mux, "Close" );
219 if( p_sys->i_del_streams )
221 block_t *p_og = NULL;
222 mtime_t i_dts = p_sys->pp_del_streams[p_sys->i_del_streams - 1]->i_dts;
224 /* Close the current ogg stream */
225 msg_Dbg( p_mux, "writing footer" );
226 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
228 /* Remove deleted logical streams */
229 for(int i = 0; i < p_sys->i_del_streams; i++ )
231 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
232 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
233 FREENULL( p_sys->pp_del_streams[i] );
235 FREENULL( p_sys->pp_del_streams );
236 p_sys->i_streams -= p_sys->i_del_streams;
239 OggSetDate( p_og, i_dts, 0 );
240 sout_AccessOutWrite( p_mux->p_access, p_og );
246 /*****************************************************************************
248 *****************************************************************************/
249 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
257 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
258 pb_bool = (bool*)va_arg( args, bool * );
262 case MUX_GET_ADD_STREAM_WAIT:
263 pb_bool = (bool*)va_arg( args, bool * );
268 ppsz = (char**)va_arg( args, char ** );
269 *ppsz = strdup( "application/ogg" );
276 /*****************************************************************************
277 * AddStream: Add an elementary stream to the muxed stream
278 *****************************************************************************/
279 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
281 sout_mux_sys_t *p_sys = p_mux->p_sys;
282 ogg_stream_t *p_stream;
285 msg_Dbg( p_mux, "adding input" );
287 p_input->p_sys = p_stream = calloc( 1, sizeof( ogg_stream_t ) );
291 p_stream->i_cat = p_input->p_fmt->i_cat;
292 p_stream->i_fourcc = p_input->p_fmt->i_codec;
293 p_stream->i_serial_no = p_sys->i_next_serial_no++;
294 p_stream->i_packet_no = 0;
295 p_stream->i_last_keyframe = 0;
296 p_stream->i_num_keyframes = 0;
297 p_stream->i_num_frames = 0;
299 p_stream->p_oggds_header = 0;
301 switch( p_input->p_fmt->i_cat )
304 if( !p_input->p_fmt->video.i_frame_rate ||
305 !p_input->p_fmt->video.i_frame_rate_base )
307 msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
308 p_input->p_fmt->video.i_frame_rate = 25;
309 p_input->p_fmt->video.i_frame_rate_base = 1;
312 switch( p_stream->i_fourcc )
322 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
323 if( !p_stream->p_oggds_header )
328 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
330 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
331 if( p_stream->i_fourcc == VLC_CODEC_MP4V )
333 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
335 else if( p_stream->i_fourcc == VLC_CODEC_DIV3 )
337 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
341 memcpy( p_stream->p_oggds_header->sub_type,
342 &p_stream->i_fourcc, 4 );
344 SetDWLE( &p_stream->p_oggds_header->i_size,
345 sizeof( oggds_header_t ) - 1 );
346 SetQWLE( &p_stream->p_oggds_header->i_time_unit,
347 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
348 (int64_t)p_input->p_fmt->video.i_frame_rate );
349 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit, 1 );
350 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 ); /* ??? */
351 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 1024*1024 );
352 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample, 0 );
353 SetDWLE( &p_stream->p_oggds_header->header.video.i_width,
354 p_input->p_fmt->video.i_width );
355 SetDWLE( &p_stream->p_oggds_header->header.video.i_height,
356 p_input->p_fmt->video.i_height );
357 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
360 case VLC_CODEC_DIRAC:
361 msg_Dbg( p_mux, "dirac stream" );
364 case VLC_CODEC_THEORA:
365 msg_Dbg( p_mux, "theora stream" );
369 FREENULL( p_input->p_sys );
375 switch( p_stream->i_fourcc )
377 case VLC_CODEC_VORBIS:
378 msg_Dbg( p_mux, "vorbis stream" );
381 case VLC_CODEC_SPEEX:
382 msg_Dbg( p_mux, "speex stream" );
386 msg_Dbg( p_mux, "flac stream" );
390 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
391 if( i_tag == WAVE_FORMAT_UNKNOWN )
393 FREENULL( p_input->p_sys );
397 p_stream->p_oggds_header =
398 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
399 if( !p_stream->p_oggds_header )
404 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
405 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
407 SetDWLE( &p_stream->p_oggds_header->i_size,
408 sizeof( oggds_header_t ) - 1 + p_input->p_fmt->i_extra );
410 if( p_input->p_fmt->i_extra )
412 memcpy( &p_stream->p_oggds_header[1],
413 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
416 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
418 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
420 snprintf( buf, sizeof(buf), "%"PRIx16, i_tag );
421 strncpy( p_stream->p_oggds_header->sub_type, buf, 4 );
423 SetQWLE( &p_stream->p_oggds_header->i_time_unit, INT64_C(10000000) );
424 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 );
425 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 30*1024 );
426 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit,
427 p_input->p_fmt->audio.i_rate );
428 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample,
429 p_input->p_fmt->audio.i_bitspersample );
430 SetDWLE( &p_stream->p_oggds_header->header.audio.i_channels,
431 p_input->p_fmt->audio.i_channels );
432 SetDWLE( &p_stream->p_oggds_header->header.audio.i_block_align,
433 p_input->p_fmt->audio.i_blockalign );
434 SetDWLE( &p_stream->p_oggds_header->header.audio.i_avgbytespersec,
435 p_input->p_fmt->i_bitrate / 8);
436 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
442 switch( p_stream->i_fourcc )
445 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
446 if( !p_stream->p_oggds_header )
451 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
453 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
454 msg_Dbg( p_mux, "subtitles stream" );
458 FREENULL( p_input->p_sys );
463 FREENULL( p_input->p_sys );
467 p_stream->b_new = true;
469 p_sys->i_add_streams++;
474 /*****************************************************************************
475 * DelStream: Delete an elementary stream from the muxed stream
476 *****************************************************************************/
477 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
479 sout_mux_sys_t *p_sys = p_mux->p_sys;
480 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
483 msg_Dbg( p_mux, "removing input" );
485 /* flush all remaining data */
488 if( !p_stream->b_new )
490 while( block_FifoCount( p_input->p_fifo ) )
491 MuxBlock( p_mux, p_input );
494 if( !p_stream->b_new &&
495 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
497 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
498 sout_AccessOutWrite( p_mux->p_access, p_og );
501 /* move input in delete queue */
502 if( !p_stream->b_new )
504 p_sys->pp_del_streams = xrealloc( p_sys->pp_del_streams,
505 (p_sys->i_del_streams + 1) * sizeof(ogg_stream_t *) );
506 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
510 /* wasn't already added so get rid of it */
511 FREENULL( p_stream->p_oggds_header );
512 FREENULL( p_stream );
513 p_sys->i_add_streams--;
517 p_input->p_sys = NULL;
522 /*****************************************************************************
523 * Ogg bitstream manipulation routines
524 *****************************************************************************/
525 static block_t *OggStreamGetPage( sout_mux_t *p_mux,
526 ogg_stream_state *p_os, mtime_t i_pts,
530 block_t *p_og, *p_og_first = NULL;
532 int (*pager)( ogg_stream_state*, ogg_page* ) = flush ? ogg_stream_flush : ogg_stream_pageout;
534 while( pager( p_os, &og ) )
537 p_og = block_New( p_mux, og.header_len + og.body_len );
539 memcpy( p_og->p_buffer, og.header, og.header_len );
540 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
545 i_pts = 0; // write it only once
547 block_ChainAppend( &p_og_first, p_og );
553 static block_t *OggStreamFlush( sout_mux_t *p_mux,
554 ogg_stream_state *p_os, mtime_t i_pts )
556 return OggStreamGetPage( p_mux, p_os, i_pts, true );
559 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
560 ogg_stream_state *p_os, mtime_t i_pts )
562 return OggStreamGetPage( p_mux, p_os, i_pts, false );
565 static block_t *OggCreateHeader( sout_mux_t *p_mux )
567 block_t *p_hdr = NULL;
568 block_t *p_og = NULL;
572 /* Write header for each stream. All b_o_s (beginning of stream) packets
573 * must appear first in the ogg stream so we take care of them first. */
574 for( int pass = 0; pass < 2; pass++ )
576 for( i = 0; i < p_mux->i_nb_inputs; i++ )
578 sout_input_t *p_input = p_mux->pp_inputs[i];
579 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
581 bool video = ( p_stream->i_fourcc == VLC_CODEC_THEORA || p_stream->i_fourcc == VLC_CODEC_DIRAC );
582 if( ( ( pass == 0 && !video ) || ( pass == 1 && video ) ) )
585 msg_Dbg( p_mux, "creating header for %4.4s",
586 (char *)&p_stream->i_fourcc );
588 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
589 p_stream->b_new = false;
590 p_stream->i_packet_no = 0;
592 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
593 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
594 p_stream->i_fourcc == VLC_CODEC_THEORA )
596 /* First packet in order: vorbis/speex/theora info */
597 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
598 void *pp_data[XIPH_MAX_HEADER_COUNT];
600 if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
601 p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
608 op.bytes = pi_size[0];
609 op.packet = pp_data[0];
610 if( pi_size[0] <= 0 )
611 msg_Err( p_mux, "header data corrupted");
616 op.packetno = p_stream->i_packet_no++;
617 ogg_stream_packetin( &p_stream->os, &op );
618 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
620 /* Get keyframe_granule_shift for theora granulepos calculation */
621 if( p_stream->i_fourcc == VLC_CODEC_THEORA )
623 p_stream->i_keyframe_granule_shift =
624 ( (op.packet[40] & 0x03) << 3 ) | ( (op.packet[41] & 0xe0) >> 5 );
627 for( unsigned i = 0; i < i_count; i++ )
630 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
632 op.packet = p_input->p_fmt->p_extra;
633 op.bytes = p_input->p_fmt->i_extra;
637 op.packetno = p_stream->i_packet_no++;
638 ogg_stream_packetin( &p_stream->os, &op );
639 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
641 else if( p_stream->i_fourcc == VLC_CODEC_FLAC )
643 /* flac stream marker (yeah, only that in the 1st packet) */
644 op.packet = (unsigned char *)"fLaC";
649 op.packetno = p_stream->i_packet_no++;
650 ogg_stream_packetin( &p_stream->os, &op );
651 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
653 else if( p_stream->p_oggds_header )
656 op.packet = (uint8_t*)p_stream->p_oggds_header;
657 op.bytes = p_stream->p_oggds_header->i_size + 1;
661 op.packetno = p_stream->i_packet_no++;
662 ogg_stream_packetin( &p_stream->os, &op );
663 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
666 block_ChainAppend( &p_hdr, p_og );
670 /* Take care of the non b_o_s headers */
671 for( i = 0; i < p_mux->i_nb_inputs; i++ )
673 sout_input_t *p_input = p_mux->pp_inputs[i];
674 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
676 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
677 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
678 p_stream->i_fourcc == VLC_CODEC_THEORA )
680 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
681 void *pp_data[XIPH_MAX_HEADER_COUNT];
683 if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
684 p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
687 /* Special case, headers are already there in the incoming stream.
688 * We need to gather them an mark them as headers. */
689 for( unsigned i = 1; i < i_count; i++ )
691 op.bytes = pi_size[i];
692 op.packet = pp_data[i];
693 if( pi_size[i] <= 0 )
694 msg_Err( p_mux, "header data corrupted");
699 op.packetno = p_stream->i_packet_no++;
700 ogg_stream_packetin( &p_stream->os, &op );
702 if( i == i_count - 1 )
703 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
705 p_og = OggStreamPageOut( p_mux, &p_stream->os, 0 );
707 block_ChainAppend( &p_hdr, p_og );
709 for( unsigned i = 0; i < i_count; i++ )
712 else if( p_stream->i_fourcc != VLC_CODEC_FLAC &&
713 p_stream->i_fourcc != VLC_CODEC_DIRAC )
719 com[0] = PACKET_TYPE_COMMENT;
720 i_com = snprintf( (char *)(com+1), 127,
721 PACKAGE_VERSION" stream output" )
728 op.packetno = p_stream->i_packet_no++;
729 ogg_stream_packetin( &p_stream->os, &op );
730 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
731 block_ChainAppend( &p_hdr, p_og );
734 /* Special case for mp4v and flac */
735 if( ( p_stream->i_fourcc == VLC_CODEC_MP4V ||
736 p_stream->i_fourcc == VLC_CODEC_FLAC ) &&
737 p_input->p_fmt->i_extra )
739 /* Send a packet with the VOL data for mp4v
740 * or STREAMINFO for flac */
741 msg_Dbg( p_mux, "writing extra data" );
742 op.bytes = p_input->p_fmt->i_extra;
743 op.packet = p_input->p_fmt->p_extra;
744 if( p_stream->i_fourcc == VLC_CODEC_FLAC )
746 /* Skip the flac stream marker */
753 op.packetno = p_stream->i_packet_no++;
754 ogg_stream_packetin( &p_stream->os, &op );
755 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
756 block_ChainAppend( &p_hdr, p_og );
760 /* set HEADER flag */
761 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
763 p_og->i_flags |= BLOCK_FLAG_HEADER;
768 static block_t *OggCreateFooter( sout_mux_t *p_mux )
770 sout_mux_sys_t *p_sys = p_mux->p_sys;
771 block_t *p_hdr = NULL;
776 /* flush all remaining data */
777 for( i = 0; i < p_mux->i_nb_inputs; i++ )
779 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
781 /* skip newly added streams */
782 if( p_stream->b_new ) continue;
784 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
786 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
787 sout_AccessOutWrite( p_mux->p_access, p_og );
791 /* Write eos packets for each stream. */
792 for( i = 0; i < p_mux->i_nb_inputs; i++ )
794 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
796 /* skip newly added streams */
797 if( p_stream->b_new ) continue;
803 op.granulepos = p_stream->u_last_granulepos;
804 op.packetno = p_stream->i_packet_no++;
805 ogg_stream_packetin( &p_stream->os, &op );
807 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
808 block_ChainAppend( &p_hdr, p_og );
809 ogg_stream_clear( &p_stream->os );
812 for( i = 0; i < p_sys->i_del_streams; i++ )
818 op.granulepos = p_sys->pp_del_streams[i]->u_last_granulepos;
819 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
820 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
822 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
823 block_ChainAppend( &p_hdr, p_og );
824 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
830 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
836 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
841 if( i_count == 0 ) return; /* ignore. */
843 i_delta = i_length / i_count;
845 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
847 p_tmp->i_dts = i_dts;
848 p_tmp->i_length = i_delta;
854 /*****************************************************************************
855 * Mux: multiplex available data in input fifos into the Ogg bitstream
856 *****************************************************************************/
857 static int Mux( sout_mux_t *p_mux )
859 sout_mux_sys_t *p_sys = p_mux->p_sys;
860 block_t *p_og = NULL;
863 if( p_sys->i_add_streams || p_sys->i_del_streams )
865 /* Open new ogg stream */
866 if( sout_MuxGetStream( p_mux, 1, &i_dts) < 0 )
868 msg_Dbg( p_mux, "waiting for data..." );
872 if( p_sys->i_streams )
874 /* Close current ogg stream */
877 msg_Dbg( p_mux, "writing footer" );
878 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
880 /* Remove deleted logical streams */
881 for( i = 0; i < p_sys->i_del_streams; i++ )
883 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
884 FREENULL( p_sys->pp_del_streams[i] );
886 FREENULL( p_sys->pp_del_streams );
887 p_sys->i_streams = 0;
890 msg_Dbg( p_mux, "writing header" );
891 p_sys->i_start_dts = i_dts;
892 p_sys->i_streams = p_mux->i_nb_inputs;
893 p_sys->i_del_streams = 0;
894 p_sys->i_add_streams = 0;
895 block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
897 /* Write header and/or footer */
898 OggSetDate( p_og, i_dts, 0 );
899 sout_AccessOutWrite( p_mux->p_access, p_og );
905 int i_stream = sout_MuxGetStream( p_mux, 1, NULL );
908 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
914 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
916 sout_mux_sys_t *p_sys = p_mux->p_sys;
917 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
918 block_t *p_data = block_FifoGet( p_input->p_fifo );
919 block_t *p_og = NULL;
922 if( p_stream->i_fourcc != VLC_CODEC_VORBIS &&
923 p_stream->i_fourcc != VLC_CODEC_FLAC &&
924 p_stream->i_fourcc != VLC_CODEC_SPEEX &&
925 p_stream->i_fourcc != VLC_CODEC_THEORA &&
926 p_stream->i_fourcc != VLC_CODEC_DIRAC )
928 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
929 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
932 op.packet = p_data->p_buffer;
933 op.bytes = p_data->i_buffer;
936 op.packetno = p_stream->i_packet_no++;
938 if( p_stream->i_cat == AUDIO_ES )
940 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
941 p_stream->i_fourcc == VLC_CODEC_FLAC ||
942 p_stream->i_fourcc == VLC_CODEC_SPEEX )
944 /* number of sample from begining + current packet */
946 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
947 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
949 else if( p_stream->p_oggds_header )
951 /* number of sample from begining */
952 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
953 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
956 else if( p_stream->i_cat == VIDEO_ES )
958 if( p_stream->i_fourcc == VLC_CODEC_THEORA )
960 p_stream->i_num_frames++;
961 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
963 p_stream->i_num_keyframes++;
964 p_stream->i_last_keyframe = p_stream->i_num_frames;
967 op.granulepos = (p_stream->i_last_keyframe << p_stream->i_keyframe_granule_shift )
968 | (p_stream->i_num_frames-p_stream->i_last_keyframe);
970 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
972 mtime_t dt = (p_data->i_dts - p_sys->i_start_dts + 1)
973 * p_input->p_fmt->video.i_frame_rate *2
974 / p_input->p_fmt->video.i_frame_rate_base
976 mtime_t delay = (p_data->i_pts - p_data->i_dts + 1)
977 * p_input->p_fmt->video.i_frame_rate *2
978 / p_input->p_fmt->video.i_frame_rate_base
980 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
981 p_stream->i_last_keyframe = dt;
982 mtime_t dist = dt - p_stream->i_last_keyframe;
983 op.granulepos = dt << 31 | (dist&0xff00) << 14
984 | (delay&0x1fff) << 9 | (dist&0xff);
986 else if( p_stream->p_oggds_header )
987 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
988 p_stream->p_oggds_header->i_time_unit;
990 else if( p_stream->i_cat == SPU_ES )
992 /* granulepos is in millisec */
993 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
998 p_stream->u_last_granulepos = op.granulepos;
999 ogg_stream_packetin( &p_stream->os, &op );
1001 if( p_stream->i_cat == SPU_ES ||
1002 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
1003 p_stream->i_fourcc == VLC_CODEC_DIRAC )
1005 /* Subtitles or Speex packets are quite small so they
1006 * need to be flushed to be sent on time */
1007 /* The OggDirac mapping suggests ever so strongly that a
1008 * page flush occurs after each OggDirac packet, so to make
1009 * the timestamps unambiguous */
1010 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
1014 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1019 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1020 p_stream->i_dts = -1;
1021 p_stream->i_length = 0;
1023 sout_AccessOutWrite( p_mux->p_access, p_og );
1027 if( p_stream->i_dts < 0 )
1029 p_stream->i_dts = p_data->i_dts;
1031 p_stream->i_length += p_data->i_length;
1034 block_Release( p_data );