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 */
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;
259 /* Close the current ogg stream */
260 msg_Dbg( p_mux, "writing footer" );
261 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
263 /* Remove deleted logical streams */
264 for( i = 0; i < p_sys->i_del_streams; i++ )
266 i_dts = p_sys->pp_del_streams[i]->i_dts;
267 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
268 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
269 FREENULL( p_sys->pp_del_streams[i] );
271 FREENULL( p_sys->pp_del_streams );
272 p_sys->i_streams -= p_sys->i_del_streams;
275 OggSetDate( p_og, i_dts, 0 );
276 sout_AccessOutWrite( p_mux->p_access, p_og );
282 /*****************************************************************************
284 *****************************************************************************/
285 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
293 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
294 pb_bool = (bool*)va_arg( args, bool * );
298 case MUX_GET_ADD_STREAM_WAIT:
299 pb_bool = (bool*)va_arg( args, bool * );
304 ppsz = (char**)va_arg( args, char ** );
305 *ppsz = strdup( "application/ogg" );
312 /*****************************************************************************
313 * AddStream: Add an elementary stream to the muxed stream
314 *****************************************************************************/
315 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
317 sout_mux_sys_t *p_sys = p_mux->p_sys;
318 ogg_stream_t *p_stream;
321 msg_Dbg( p_mux, "adding input" );
323 p_input->p_sys = p_stream = malloc( sizeof( ogg_stream_t ) );
327 p_stream->i_cat = p_input->p_fmt->i_cat;
328 p_stream->i_fourcc = p_input->p_fmt->i_codec;
329 p_stream->i_serial_no = p_sys->i_next_serial_no++;
330 p_stream->i_packet_no = 0;
332 p_stream->p_oggds_header = 0;
334 switch( p_input->p_fmt->i_cat )
337 if( !p_input->p_fmt->video.i_frame_rate ||
338 !p_input->p_fmt->video.i_frame_rate_base )
340 msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
341 p_input->p_fmt->video.i_frame_rate = 25;
342 p_input->p_fmt->video.i_frame_rate_base = 1;
345 switch( p_stream->i_fourcc )
347 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
348 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
349 case VLC_FOURCC( 'D', 'I', 'V', '3' ):
350 case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
351 case VLC_FOURCC( 'W', 'M', 'V', '1' ):
352 case VLC_FOURCC( 'W', 'M', 'V', '2' ):
353 case VLC_FOURCC( 'W', 'M', 'V', '3' ):
354 case VLC_FOURCC( 'S', 'N', 'O', 'W' ):
355 case VLC_FOURCC( 'd', 'r', 'a', 'c' ):
356 p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
357 if( !p_stream->p_oggds_header )
362 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
363 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
365 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
366 if( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) )
368 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
370 else if( p_stream->i_fourcc == VLC_FOURCC( 'D', 'I', 'V', '3' ) )
372 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
376 memcpy( p_stream->p_oggds_header->sub_type,
377 &p_stream->i_fourcc, 4 );
379 SetDWLE( &p_stream->p_oggds_header->i_size,
380 sizeof( oggds_header_t ) - 1 );
381 SetQWLE( &p_stream->p_oggds_header->i_time_unit,
382 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
383 (int64_t)p_input->p_fmt->video.i_frame_rate );
384 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit, 1 );
385 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 ); /* ??? */
386 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 1024*1024 );
387 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample, 0 );
388 SetDWLE( &p_stream->p_oggds_header->header.video.i_width,
389 p_input->p_fmt->video.i_width );
390 SetDWLE( &p_stream->p_oggds_header->header.video.i_height,
391 p_input->p_fmt->video.i_height );
392 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
395 case VLC_FOURCC( 't', 'h', 'e', 'o' ):
396 msg_Dbg( p_mux, "theora stream" );
400 FREENULL( p_input->p_sys );
406 switch( p_stream->i_fourcc )
408 case VLC_FOURCC( 'v', 'o', 'r', 'b' ):
409 msg_Dbg( p_mux, "vorbis stream" );
412 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
413 msg_Dbg( p_mux, "speex stream" );
416 case VLC_FOURCC( 'f', 'l', 'a', 'c' ):
417 msg_Dbg( p_mux, "flac stream" );
421 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
422 if( i_tag == WAVE_FORMAT_UNKNOWN )
424 FREENULL( p_input->p_sys );
428 p_stream->p_oggds_header =
429 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
430 if( !p_stream->p_oggds_header )
435 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
436 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
438 SetDWLE( &p_stream->p_oggds_header->i_size,
439 sizeof( oggds_header_t ) - 1 + p_input->p_fmt->i_extra );
441 if( p_input->p_fmt->i_extra )
443 memcpy( &p_stream->p_oggds_header[1],
444 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
447 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
449 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
450 sprintf( p_stream->p_oggds_header->sub_type, "%-x", i_tag );
452 SetQWLE( &p_stream->p_oggds_header->i_time_unit, INT64_C(10000000) );
453 SetDWLE( &p_stream->p_oggds_header->i_default_len, 1 );
454 SetDWLE( &p_stream->p_oggds_header->i_buffer_size, 30*1024 );
455 SetQWLE( &p_stream->p_oggds_header->i_samples_per_unit,
456 p_input->p_fmt->audio.i_rate );
457 SetWLE( &p_stream->p_oggds_header->i_bits_per_sample,
458 p_input->p_fmt->audio.i_bitspersample );
459 SetDWLE( &p_stream->p_oggds_header->header.audio.i_channels,
460 p_input->p_fmt->audio.i_channels );
461 SetDWLE( &p_stream->p_oggds_header->header.audio.i_block_align,
462 p_input->p_fmt->audio.i_blockalign );
463 SetDWLE( &p_stream->p_oggds_header->header.audio.i_avgbytespersec,
464 p_input->p_fmt->i_bitrate / 8);
465 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
471 switch( p_stream->i_fourcc )
473 case VLC_FOURCC( 's', 'u','b', 't' ):
474 p_stream->p_oggds_header = malloc( sizeof(oggds_header_t) );
475 if( !p_stream->p_oggds_header )
480 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
481 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
483 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
484 msg_Dbg( p_mux, "subtitles stream" );
488 FREENULL( p_input->p_sys );
493 FREENULL( p_input->p_sys );
497 p_stream->b_new = true;
499 p_sys->i_add_streams++;
504 /*****************************************************************************
505 * DelStream: Delete an elementary stream from the muxed stream
506 *****************************************************************************/
507 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
509 sout_mux_sys_t *p_sys = p_mux->p_sys;
510 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
513 msg_Dbg( p_mux, "removing input" );
515 /* flush all remaining data */
518 if( !p_stream->b_new )
520 while( block_FifoCount( p_input->p_fifo ) )
521 MuxBlock( p_mux, p_input );
524 if( !p_stream->b_new &&
525 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
527 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
528 sout_AccessOutWrite( p_mux->p_access, p_og );
531 /* move input in delete queue */
532 if( !p_stream->b_new )
534 p_sys->pp_del_streams = realloc( p_sys->pp_del_streams,
535 (p_sys->i_del_streams + 1) *
536 sizeof(ogg_stream_t *) );
537 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
541 /* wasn't already added so get rid of it */
542 FREENULL( p_stream->p_oggds_header );
543 FREENULL( p_stream );
544 p_sys->i_add_streams--;
548 p_input->p_sys = NULL;
553 /*****************************************************************************
554 * Ogg bitstream manipulation routines
555 *****************************************************************************/
556 static block_t *OggStreamFlush( sout_mux_t *p_mux,
557 ogg_stream_state *p_os, mtime_t i_pts )
560 block_t *p_og, *p_og_first = NULL;
563 while( ogg_stream_flush( p_os, &og ) )
566 p_og = block_New( p_mux, og.header_len + og.body_len );
568 memcpy( p_og->p_buffer, og.header, og.header_len );
569 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
574 i_pts = 0; // write it only once
576 block_ChainAppend( &p_og_first, p_og );
582 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
583 ogg_stream_state *p_os, mtime_t i_pts )
586 block_t *p_og, *p_og_first = NULL;
589 while( ogg_stream_pageout( p_os, &og ) )
592 p_og = block_New( p_mux, og.header_len + og.body_len );
594 memcpy( p_og->p_buffer, og.header, og.header_len );
595 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
600 i_pts = 0; // write them only once
602 block_ChainAppend( &p_og_first, p_og );
608 static block_t *OggCreateHeader( sout_mux_t *p_mux )
610 block_t *p_hdr = NULL;
611 block_t *p_og = NULL;
616 /* Write header for each stream. All b_o_s (beginning of stream) packets
617 * must appear first in the ogg stream so we take care of them first. */
618 for( i = 0; i < p_mux->i_nb_inputs; i++ )
620 sout_input_t *p_input = p_mux->pp_inputs[i];
621 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
622 p_stream->b_new = false;
624 msg_Dbg( p_mux, "creating header for %4.4s",
625 (char *)&p_stream->i_fourcc );
627 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
628 p_stream->i_packet_no = 0;
630 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
631 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
632 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
634 /* First packet in order: vorbis/speex/theora info */
635 p_extra = p_input->p_fmt->p_extra;
636 i_extra = p_input->p_fmt->i_extra;
638 op.bytes = *(p_extra++) << 8;
639 op.bytes |= (*(p_extra++) & 0xFF);
641 i_extra -= (op.bytes + 2);
644 msg_Err( p_mux, "header data corrupted");
651 op.packetno = p_stream->i_packet_no++;
652 ogg_stream_packetin( &p_stream->os, &op );
653 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
655 /* Get keyframe_granule_shift for theora granulepos calculation */
656 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
658 int i_keyframe_frequency_force =
659 1 << ((op.packet[40] << 6 >> 3) | (op.packet[41] >> 5));
661 /* granule_shift = i_log( frequency_force -1 ) */
662 p_stream->i_keyframe_granule_shift = 0;
663 i_keyframe_frequency_force--;
664 while( i_keyframe_frequency_force )
666 p_stream->i_keyframe_granule_shift++;
667 i_keyframe_frequency_force >>= 1;
671 else if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
673 /* flac stream marker (yeah, only that in the 1st packet) */
674 op.packet = (unsigned char *)"fLaC";
679 op.packetno = p_stream->i_packet_no++;
680 ogg_stream_packetin( &p_stream->os, &op );
681 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
683 else if( p_stream->p_oggds_header )
686 op.packet = (uint8_t*)p_stream->p_oggds_header;
687 op.bytes = p_stream->p_oggds_header->i_size + 1;
691 op.packetno = p_stream->i_packet_no++;
692 ogg_stream_packetin( &p_stream->os, &op );
693 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
696 block_ChainAppend( &p_hdr, p_og );
699 /* Take care of the non b_o_s headers */
700 for( i = 0; i < p_mux->i_nb_inputs; i++ )
702 sout_input_t *p_input = p_mux->pp_inputs[i];
703 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
705 if( p_stream->i_fourcc == VLC_FOURCC( 'v', 'o', 'r', 'b' ) ||
706 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ||
707 p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
709 /* Special case, headers are already there in the incoming stream.
710 * We need to gather them an mark them as headers. */
713 if( p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) ) j = 1;
715 p_extra = p_input->p_fmt->p_extra;
716 i_extra = p_input->p_fmt->i_extra;
719 op.bytes = *(p_extra++) << 8;
720 op.bytes |= (*(p_extra++) & 0xFF);
723 i_extra -= (op.bytes + 2);
727 op.bytes = *(p_extra++) << 8;
728 op.bytes |= (*(p_extra++) & 0xFF);
731 i_extra -= (op.bytes + 2);
734 msg_Err( p_mux, "header data corrupted");
741 op.packetno = p_stream->i_packet_no++;
742 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 else if( p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
754 com[0] = PACKET_TYPE_COMMENT;
755 i_com = snprintf( (char *)(com+1), 127,
756 PACKAGE_VERSION" stream output" )
763 op.packetno = p_stream->i_packet_no++;
764 ogg_stream_packetin( &p_stream->os, &op );
765 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
766 block_ChainAppend( &p_hdr, p_og );
769 /* Special case for mp4v and flac */
770 if( ( p_stream->i_fourcc == VLC_FOURCC( 'm', 'p', '4', 'v' ) ||
771 p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) ) &&
772 p_input->p_fmt->i_extra )
774 /* Send a packet with the VOL data for mp4v
775 * or STREAMINFO for flac */
776 msg_Dbg( p_mux, "writing extra data" );
777 op.bytes = p_input->p_fmt->i_extra;
778 op.packet = p_input->p_fmt->p_extra;
779 if( p_stream->i_fourcc == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
781 /* Skip the flac stream marker */
788 op.packetno = p_stream->i_packet_no++;
789 ogg_stream_packetin( &p_stream->os, &op );
790 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
791 block_ChainAppend( &p_hdr, p_og );
795 /* set HEADER flag */
796 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
798 p_og->i_flags |= BLOCK_FLAG_HEADER;
803 static block_t *OggCreateFooter( sout_mux_t *p_mux )
805 sout_mux_sys_t *p_sys = p_mux->p_sys;
806 block_t *p_hdr = NULL;
811 /* flush all remaining data */
812 for( i = 0; i < p_mux->i_nb_inputs; i++ )
814 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
816 /* skip newly added streams */
817 if( p_stream->b_new ) continue;
819 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
821 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
822 sout_AccessOutWrite( p_mux->p_access, p_og );
826 /* Write eos packets for each stream. */
827 for( i = 0; i < p_mux->i_nb_inputs; i++ )
829 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
831 /* skip newly added streams */
832 if( p_stream->b_new ) continue;
839 op.packetno = p_stream->i_packet_no++;
840 ogg_stream_packetin( &p_stream->os, &op );
842 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
843 block_ChainAppend( &p_hdr, p_og );
844 ogg_stream_clear( &p_stream->os );
847 for( i = 0; i < p_sys->i_del_streams; i++ )
854 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
855 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
857 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
858 block_ChainAppend( &p_hdr, p_og );
859 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
865 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
871 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
876 if( i_count == 0 ) return; /* ignore. */
878 i_delta = i_length / i_count;
880 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
882 p_tmp->i_dts = i_dts;
883 p_tmp->i_length = i_delta;
889 /*****************************************************************************
890 * Mux: multiplex available data in input fifos into the Ogg bitstream
891 *****************************************************************************/
892 static int Mux( sout_mux_t *p_mux )
894 sout_mux_sys_t *p_sys = p_mux->p_sys;
895 block_t *p_og = NULL;
899 if( p_sys->i_add_streams || p_sys->i_del_streams )
901 /* Open new ogg stream */
902 if( MuxGetStream( p_mux, &i_stream, &i_dts) < 0 )
904 msg_Dbg( p_mux, "waiting for data..." );
908 if( p_sys->i_streams )
910 /* Close current ogg stream */
913 msg_Dbg( p_mux, "writing footer" );
914 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
916 /* Remove deleted logical streams */
917 for( i = 0; i < p_sys->i_del_streams; i++ )
919 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
920 FREENULL( p_sys->pp_del_streams[i] );
922 FREENULL( p_sys->pp_del_streams );
923 p_sys->i_streams = 0;
926 msg_Dbg( p_mux, "writing header" );
927 p_sys->i_start_dts = i_dts;
928 p_sys->i_streams = p_mux->i_nb_inputs;
929 p_sys->i_del_streams = 0;
930 p_sys->i_add_streams = 0;
931 block_ChainAppend( &p_og, OggCreateHeader( p_mux ) );
933 /* Write header and/or footer */
934 OggSetDate( p_og, i_dts, 0 );
935 sout_AccessOutWrite( p_mux->p_access, p_og );
941 if( MuxGetStream( p_mux, &i_stream, 0 ) < 0 ) return VLC_SUCCESS;
942 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
948 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
950 sout_mux_sys_t *p_sys = p_mux->p_sys;
951 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
952 block_t *p_data = block_FifoGet( p_input->p_fifo );
953 block_t *p_og = NULL;
956 if( p_stream->i_fourcc != VLC_FOURCC( 'v', 'o', 'r', 'b' ) &&
957 p_stream->i_fourcc != VLC_FOURCC( 'f', 'l', 'a', 'c' ) &&
958 p_stream->i_fourcc != VLC_FOURCC( 's', 'p', 'x', ' ' ) &&
959 p_stream->i_fourcc != VLC_FOURCC( 't', 'h', 'e', 'o' ) )
961 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
962 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
965 op.packet = p_data->p_buffer;
966 op.bytes = p_data->i_buffer;
969 op.packetno = p_stream->i_packet_no++;
971 if( p_stream->i_cat == AUDIO_ES )
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', ' ' ) )
977 /* number of sample from begining + current packet */
979 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
980 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
982 else if( p_stream->p_oggds_header )
984 /* number of sample from begining */
985 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
986 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
989 else if( p_stream->i_cat == VIDEO_ES )
991 if( p_stream->i_fourcc == VLC_FOURCC( 't', 'h', 'e', 'o' ) )
993 /* FIXME, we assume only keyframes */
994 op.granulepos = ( ( p_data->i_dts - p_sys->i_start_dts ) *
995 p_input->p_fmt->video.i_frame_rate /
996 p_input->p_fmt->video.i_frame_rate_base /
997 INT64_C(1000000) ) << p_stream->i_keyframe_granule_shift;
999 else if( p_stream->p_oggds_header )
1000 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
1001 p_stream->p_oggds_header->i_time_unit;
1003 else if( p_stream->i_cat == SPU_ES )
1005 /* granulepos is in millisec */
1006 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
1009 ogg_stream_packetin( &p_stream->os, &op );
1011 if( p_stream->i_cat == SPU_ES ||
1012 p_stream->i_fourcc == VLC_FOURCC( 's', 'p', 'x', ' ' ) )
1014 /* Subtitles or Speex packets are quite small so they
1015 * need to be flushed to be sent on time */
1016 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
1020 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1025 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1026 p_stream->i_dts = -1;
1027 p_stream->i_length = 0;
1029 sout_AccessOutWrite( p_mux->p_access, p_og );
1033 if( p_stream->i_dts < 0 )
1035 p_stream->i_dts = p_data->i_dts;
1037 p_stream->i_length += p_data->i_length;
1040 block_Release( p_data );