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
86 } oggds_header_video_t;
91 int16_t i_block_align;
92 int32_t i_avgbytespersec;
93 } oggds_header_audio_t;
97 uint8_t i_packet_type;
105 int64_t i_samples_per_unit;
106 int32_t i_default_len;
108 int32_t i_buffer_size;
109 int16_t i_bits_per_sample;
111 int16_t i_padding_0; /* Because the original is using MSVC packing style */
115 oggds_header_video_t video;
116 oggds_header_audio_t audio;
119 int32_t i_padding_1; /* Because the original is using MSVC packing style */
123 /*****************************************************************************
124 * Definitions of structures and functions used by this plugins
125 *****************************************************************************/
137 int i_keyframe_granule_shift; /* Theora only */
138 int i_last_keyframe; /* dirac and theora */
139 int i_num_frames; /* Theora only */
140 uint64_t u_last_granulepos; /* Used for correct EOS page */
141 int64_t i_num_keyframes;
144 oggds_header_t *p_oggds_header;
148 struct sout_mux_sys_t
153 int i_next_serial_no;
155 /* number of logical streams pending to be added */
158 /* logical streams pending to be deleted */
160 ogg_stream_t **pp_del_streams;
163 static void OggSetDate( block_t *, mtime_t , mtime_t );
164 static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
166 /*****************************************************************************
168 *****************************************************************************/
169 static int Open( vlc_object_t *p_this )
171 sout_mux_t *p_mux = (sout_mux_t*)p_this;
172 sout_mux_sys_t *p_sys;
174 msg_Info( p_mux, "Open" );
176 p_sys = malloc( sizeof( sout_mux_sys_t ) );
179 p_sys->i_streams = 0;
180 p_sys->i_add_streams = 0;
181 p_sys->i_del_streams = 0;
182 p_sys->pp_del_streams = 0;
184 p_mux->p_sys = p_sys;
185 p_mux->pf_control = Control;
186 p_mux->pf_addstream = AddStream;
187 p_mux->pf_delstream = DelStream;
190 /* First serial number is random.
191 * (Done like this because on win32 you need to seed the random number
192 * generator once per thread). */
194 vlc_rand_bytes(&r, sizeof(r));
195 p_sys->i_next_serial_no = r & INT_MAX;
200 /*****************************************************************************
201 * Close: Finalize ogg bitstream and close muxer
202 *****************************************************************************/
203 static void Close( vlc_object_t * p_this )
205 sout_mux_t *p_mux = (sout_mux_t*)p_this;
206 sout_mux_sys_t *p_sys = p_mux->p_sys;
208 msg_Info( p_mux, "Close" );
210 if( p_sys->i_del_streams )
212 block_t *p_og = NULL;
213 mtime_t i_dts = p_sys->pp_del_streams[p_sys->i_del_streams - 1]->i_dts;
215 /* Close the current ogg stream */
216 msg_Dbg( p_mux, "writing footer" );
217 block_ChainAppend( &p_og, OggCreateFooter( p_mux ) );
219 /* Remove deleted logical streams */
220 for(int i = 0; i < p_sys->i_del_streams; i++ )
222 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
223 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
224 FREENULL( p_sys->pp_del_streams[i] );
226 FREENULL( p_sys->pp_del_streams );
227 p_sys->i_streams -= p_sys->i_del_streams;
230 OggSetDate( p_og, i_dts, 0 );
231 sout_AccessOutWrite( p_mux->p_access, p_og );
237 /*****************************************************************************
239 *****************************************************************************/
240 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
248 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
249 pb_bool = (bool*)va_arg( args, bool * );
253 case MUX_GET_ADD_STREAM_WAIT:
254 pb_bool = (bool*)va_arg( args, bool * );
259 ppsz = (char**)va_arg( args, char ** );
260 *ppsz = strdup( "application/ogg" );
267 /*****************************************************************************
268 * AddStream: Add an elementary stream to the muxed stream
269 *****************************************************************************/
270 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
272 sout_mux_sys_t *p_sys = p_mux->p_sys;
273 ogg_stream_t *p_stream;
276 msg_Dbg( p_mux, "adding input" );
278 p_input->p_sys = p_stream = calloc( 1, sizeof( ogg_stream_t ) );
282 p_stream->i_cat = p_input->p_fmt->i_cat;
283 p_stream->i_fourcc = p_input->p_fmt->i_codec;
284 p_stream->i_serial_no = p_sys->i_next_serial_no++;
285 p_stream->i_packet_no = 0;
286 p_stream->i_last_keyframe = 0;
287 p_stream->i_num_keyframes = 0;
288 p_stream->i_num_frames = 0;
290 p_stream->p_oggds_header = 0;
292 switch( p_input->p_fmt->i_cat )
295 if( !p_input->p_fmt->video.i_frame_rate ||
296 !p_input->p_fmt->video.i_frame_rate_base )
298 msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
299 p_input->p_fmt->video.i_frame_rate = 25;
300 p_input->p_fmt->video.i_frame_rate_base = 1;
303 switch( p_stream->i_fourcc )
313 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
314 if( !p_stream->p_oggds_header )
319 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
321 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
322 if( p_stream->i_fourcc == VLC_CODEC_MP4V )
324 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
326 else if( p_stream->i_fourcc == VLC_CODEC_DIV3 )
328 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
332 memcpy( p_stream->p_oggds_header->sub_type,
333 &p_stream->i_fourcc, 4 );
335 p_stream->p_oggds_header->i_size = 0 ;
336 p_stream->p_oggds_header->i_time_unit =
337 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
338 (int64_t)p_input->p_fmt->video.i_frame_rate;
339 p_stream->p_oggds_header->i_samples_per_unit = 1;
340 p_stream->p_oggds_header->i_default_len = 1 ; /* ??? */
341 p_stream->p_oggds_header->i_buffer_size = 1024*1024;
342 p_stream->p_oggds_header->i_bits_per_sample = 0;
343 p_stream->p_oggds_header->header.video.i_width = p_input->p_fmt->video.i_width;
344 p_stream->p_oggds_header->header.video.i_height = p_input->p_fmt->video.i_height;
345 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
348 case VLC_CODEC_DIRAC:
349 msg_Dbg( p_mux, "dirac stream" );
352 case VLC_CODEC_THEORA:
353 msg_Dbg( p_mux, "theora stream" );
357 FREENULL( p_input->p_sys );
363 switch( p_stream->i_fourcc )
365 case VLC_CODEC_VORBIS:
366 msg_Dbg( p_mux, "vorbis stream" );
369 case VLC_CODEC_SPEEX:
370 msg_Dbg( p_mux, "speex stream" );
374 msg_Dbg( p_mux, "flac stream" );
378 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
379 if( i_tag == WAVE_FORMAT_UNKNOWN )
381 FREENULL( p_input->p_sys );
385 p_stream->p_oggds_header =
386 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
387 if( !p_stream->p_oggds_header )
392 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
393 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
395 p_stream->p_oggds_header->i_size = p_input->p_fmt->i_extra;
397 if( p_input->p_fmt->i_extra )
399 memcpy( &p_stream->p_oggds_header[1],
400 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
403 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
405 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
407 snprintf( buf, sizeof(buf), "%"PRIx16, i_tag );
408 strncpy( p_stream->p_oggds_header->sub_type, buf, 4 );
410 p_stream->p_oggds_header->i_time_unit = INT64_C(10000000);
411 p_stream->p_oggds_header->i_default_len = 1;
412 p_stream->p_oggds_header->i_buffer_size = 30*1024 ;
413 p_stream->p_oggds_header->i_samples_per_unit = p_input->p_fmt->audio.i_rate;
414 p_stream->p_oggds_header->i_bits_per_sample = p_input->p_fmt->audio.i_bitspersample;
415 p_stream->p_oggds_header->header.audio.i_channels = p_input->p_fmt->audio.i_channels;
416 p_stream->p_oggds_header->header.audio.i_block_align = p_input->p_fmt->audio.i_blockalign;
417 p_stream->p_oggds_header->header.audio.i_avgbytespersec = p_input->p_fmt->i_bitrate / 8;
418 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
424 switch( p_stream->i_fourcc )
427 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
428 if( !p_stream->p_oggds_header )
433 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
435 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
436 msg_Dbg( p_mux, "subtitles stream" );
440 FREENULL( p_input->p_sys );
445 FREENULL( p_input->p_sys );
449 p_stream->b_new = true;
451 p_sys->i_add_streams++;
456 /*****************************************************************************
457 * DelStream: Delete an elementary stream from the muxed stream
458 *****************************************************************************/
459 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
461 sout_mux_sys_t *p_sys = p_mux->p_sys;
462 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
465 msg_Dbg( p_mux, "removing input" );
467 /* flush all remaining data */
470 if( !p_stream->b_new )
472 while( block_FifoCount( p_input->p_fifo ) )
473 MuxBlock( p_mux, p_input );
476 if( !p_stream->b_new &&
477 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
479 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
480 sout_AccessOutWrite( p_mux->p_access, p_og );
483 /* move input in delete queue */
484 if( !p_stream->b_new )
486 p_sys->pp_del_streams = xrealloc( p_sys->pp_del_streams,
487 (p_sys->i_del_streams + 1) * sizeof(ogg_stream_t *) );
488 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
492 /* wasn't already added so get rid of it */
493 FREENULL( p_stream->p_oggds_header );
494 FREENULL( p_stream );
495 p_sys->i_add_streams--;
499 p_input->p_sys = NULL;
504 /*****************************************************************************
505 * Ogg bitstream manipulation routines
506 *****************************************************************************/
507 static block_t *OggStreamGetPage( sout_mux_t *p_mux,
508 ogg_stream_state *p_os, mtime_t i_pts,
512 block_t *p_og, *p_og_first = NULL;
514 int (*pager)( ogg_stream_state*, ogg_page* ) = flush ? ogg_stream_flush : ogg_stream_pageout;
516 while( pager( p_os, &og ) )
519 p_og = block_New( p_mux, og.header_len + og.body_len );
521 memcpy( p_og->p_buffer, og.header, og.header_len );
522 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
527 i_pts = 0; // write it only once
529 block_ChainAppend( &p_og_first, p_og );
535 static block_t *OggStreamFlush( sout_mux_t *p_mux,
536 ogg_stream_state *p_os, mtime_t i_pts )
538 return OggStreamGetPage( p_mux, p_os, i_pts, true );
541 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
542 ogg_stream_state *p_os, mtime_t i_pts )
544 return OggStreamGetPage( p_mux, p_os, i_pts, false );
547 static int32_t OggFillDsHeader( uint8_t *p_buffer, oggds_header_t *p_oggds_header, int i_cat )
550 p_buffer[index] = p_oggds_header->i_packet_type;
552 memcpy( &p_buffer[index], p_oggds_header->stream_type, sizeof(p_oggds_header->stream_type) );
553 index += sizeof(p_oggds_header->stream_type);
554 memcpy(&p_buffer[index], p_oggds_header->sub_type, sizeof(p_oggds_header->sub_type) );
555 index += sizeof(p_oggds_header->sub_type);
557 /* The size is filled at the end */
558 uint8_t *p_isize = &p_buffer[index];
561 SetQWLE( &p_buffer[index], p_oggds_header->i_time_unit );
563 SetQWLE( &p_buffer[index], p_oggds_header->i_samples_per_unit );
565 SetDWLE( &p_buffer[index], p_oggds_header->i_default_len );
567 SetDWLE( &p_buffer[index], p_oggds_header->i_buffer_size );
569 SetWLE( &p_buffer[index], p_oggds_header->i_bits_per_sample );
571 SetWLE( &p_buffer[index], p_oggds_header->i_padding_0 );
577 SetDWLE( &p_buffer[index], p_oggds_header->header.video.i_width );
578 SetDWLE( &p_buffer[index+4], p_oggds_header->header.video.i_height );
581 SetWLE( &p_buffer[index], p_oggds_header->header.audio.i_channels );
582 SetWLE( &p_buffer[index+2], p_oggds_header->header.audio.i_block_align );
583 SetDWLE( &p_buffer[index+4], p_oggds_header->header.audio.i_avgbytespersec );
587 SetDWLE( &p_buffer[index], p_oggds_header->i_padding_1 );
591 if( p_oggds_header->i_size > 0 )
593 memcpy( &p_buffer[index], p_oggds_header + sizeof(*p_oggds_header), p_oggds_header->i_size );
594 index += p_oggds_header->i_size;
597 SetDWLE( p_isize, index-1 );
601 static block_t *OggCreateHeader( sout_mux_t *p_mux )
603 block_t *p_hdr = NULL;
604 block_t *p_og = NULL;
608 /* Write header for each stream. All b_o_s (beginning of stream) packets
609 * must appear first in the ogg stream so we take care of them first. */
610 for( int pass = 0; pass < 2; pass++ )
612 for( i = 0; i < p_mux->i_nb_inputs; i++ )
614 sout_input_t *p_input = p_mux->pp_inputs[i];
615 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
617 bool video = ( p_stream->i_fourcc == VLC_CODEC_THEORA || p_stream->i_fourcc == VLC_CODEC_DIRAC );
618 if( ( ( pass == 0 && !video ) || ( pass == 1 && video ) ) )
621 msg_Dbg( p_mux, "creating header for %4.4s",
622 (char *)&p_stream->i_fourcc );
624 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
625 p_stream->b_new = false;
626 p_stream->i_packet_no = 0;
628 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
629 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
630 p_stream->i_fourcc == VLC_CODEC_THEORA )
632 /* First packet in order: vorbis/speex/theora info */
633 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
634 void *pp_data[XIPH_MAX_HEADER_COUNT];
636 if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
637 p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
644 op.bytes = pi_size[0];
645 op.packet = pp_data[0];
646 if( pi_size[0] <= 0 )
647 msg_Err( p_mux, "header data corrupted");
652 op.packetno = p_stream->i_packet_no++;
653 ogg_stream_packetin( &p_stream->os, &op );
654 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
656 /* Get keyframe_granule_shift for theora granulepos calculation */
657 if( p_stream->i_fourcc == VLC_CODEC_THEORA )
659 p_stream->i_keyframe_granule_shift =
660 ( (op.packet[40] & 0x03) << 3 ) | ( (op.packet[41] & 0xe0) >> 5 );
663 for( unsigned i = 0; i < i_count; i++ )
666 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
668 op.packet = p_input->p_fmt->p_extra;
669 op.bytes = p_input->p_fmt->i_extra;
673 op.packetno = p_stream->i_packet_no++;
674 ogg_stream_packetin( &p_stream->os, &op );
675 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
677 else if( p_stream->i_fourcc == VLC_CODEC_FLAC )
679 /* flac stream marker (yeah, only that in the 1st packet) */
680 op.packet = (unsigned char *)"fLaC";
685 op.packetno = p_stream->i_packet_no++;
686 ogg_stream_packetin( &p_stream->os, &op );
687 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
689 else if( p_stream->p_oggds_header )
692 op.packet = malloc( sizeof(*p_stream->p_oggds_header) + p_stream->p_oggds_header->i_size );
695 op.bytes = OggFillDsHeader( op.packet, p_stream->p_oggds_header, p_stream->i_cat );
699 op.packetno = p_stream->i_packet_no++;
700 ogg_stream_packetin( &p_stream->os, &op );
701 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
705 block_ChainAppend( &p_hdr, p_og );
709 /* Take care of the non b_o_s headers */
710 for( i = 0; i < p_mux->i_nb_inputs; i++ )
712 sout_input_t *p_input = p_mux->pp_inputs[i];
713 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
715 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
716 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
717 p_stream->i_fourcc == VLC_CODEC_THEORA )
719 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
720 void *pp_data[XIPH_MAX_HEADER_COUNT];
722 if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
723 p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
726 /* Special case, headers are already there in the incoming stream.
727 * We need to gather them an mark them as headers. */
728 for( unsigned i = 1; i < i_count; i++ )
730 op.bytes = pi_size[i];
731 op.packet = pp_data[i];
732 if( pi_size[i] <= 0 )
733 msg_Err( p_mux, "header data corrupted");
738 op.packetno = p_stream->i_packet_no++;
739 ogg_stream_packetin( &p_stream->os, &op );
741 if( i == i_count - 1 )
742 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
744 p_og = OggStreamPageOut( p_mux, &p_stream->os, 0 );
746 block_ChainAppend( &p_hdr, p_og );
748 for( unsigned i = 0; i < i_count; i++ )
751 else if( p_stream->i_fourcc != VLC_CODEC_FLAC &&
752 p_stream->i_fourcc != VLC_CODEC_DIRAC )
758 com[0] = PACKET_TYPE_COMMENT;
759 i_com = snprintf( (char *)(com+1), 127,
760 PACKAGE_VERSION" stream output" )
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 );
773 /* Special case for mp4v and flac */
774 if( ( p_stream->i_fourcc == VLC_CODEC_MP4V ||
775 p_stream->i_fourcc == VLC_CODEC_FLAC ) &&
776 p_input->p_fmt->i_extra )
778 /* Send a packet with the VOL data for mp4v
779 * or STREAMINFO for flac */
780 msg_Dbg( p_mux, "writing extra data" );
781 op.bytes = p_input->p_fmt->i_extra;
782 op.packet = p_input->p_fmt->p_extra;
783 if( p_stream->i_fourcc == VLC_CODEC_FLAC )
785 /* Skip the flac stream marker */
792 op.packetno = p_stream->i_packet_no++;
793 ogg_stream_packetin( &p_stream->os, &op );
794 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
795 block_ChainAppend( &p_hdr, p_og );
799 /* set HEADER flag */
800 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
802 p_og->i_flags |= BLOCK_FLAG_HEADER;
807 static block_t *OggCreateFooter( sout_mux_t *p_mux )
809 sout_mux_sys_t *p_sys = p_mux->p_sys;
810 block_t *p_hdr = NULL;
815 /* flush all remaining data */
816 for( i = 0; i < p_mux->i_nb_inputs; i++ )
818 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
820 /* skip newly added streams */
821 if( p_stream->b_new ) continue;
823 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
825 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
826 sout_AccessOutWrite( p_mux->p_access, p_og );
830 /* Write eos packets for each stream. */
831 for( i = 0; i < p_mux->i_nb_inputs; i++ )
833 ogg_stream_t *p_stream = p_mux->pp_inputs[i]->p_sys;
835 /* skip newly added streams */
836 if( p_stream->b_new ) continue;
842 op.granulepos = p_stream->u_last_granulepos;
843 op.packetno = p_stream->i_packet_no++;
844 ogg_stream_packetin( &p_stream->os, &op );
846 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
847 block_ChainAppend( &p_hdr, p_og );
848 ogg_stream_clear( &p_stream->os );
851 for( i = 0; i < p_sys->i_del_streams; i++ )
857 op.granulepos = p_sys->pp_del_streams[i]->u_last_granulepos;
858 op.packetno = p_sys->pp_del_streams[i]->i_packet_no++;
859 ogg_stream_packetin( &p_sys->pp_del_streams[i]->os, &op );
861 p_og = OggStreamFlush( p_mux, &p_sys->pp_del_streams[i]->os, 0 );
862 block_ChainAppend( &p_hdr, p_og );
863 ogg_stream_clear( &p_sys->pp_del_streams[i]->os );
869 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
875 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
880 if( i_count == 0 ) return; /* ignore. */
882 i_delta = i_length / i_count;
884 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
886 p_tmp->i_dts = i_dts;
887 p_tmp->i_length = i_delta;
893 /*****************************************************************************
894 * Mux: multiplex available data in input fifos into the Ogg bitstream
895 *****************************************************************************/
896 static int Mux( sout_mux_t *p_mux )
898 sout_mux_sys_t *p_sys = p_mux->p_sys;
899 block_t *p_og = NULL;
902 if( p_sys->i_add_streams || p_sys->i_del_streams )
904 /* Open new ogg stream */
905 if( sout_MuxGetStream( p_mux, 1, &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_t *p_header = OggCreateHeader( p_mux );
937 block_ChainAppend( &p_og, p_header );
939 /* Write header and/or footer */
940 OggSetDate( p_og, i_dts, 0 );
941 sout_AccessOutWrite( p_mux->p_access, p_og );
947 int i_stream = sout_MuxGetStream( p_mux, 1, NULL );
950 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
956 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
958 sout_mux_sys_t *p_sys = p_mux->p_sys;
959 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
960 block_t *p_data = block_FifoGet( p_input->p_fifo );
961 block_t *p_og = NULL;
964 if( p_stream->i_fourcc != VLC_CODEC_VORBIS &&
965 p_stream->i_fourcc != VLC_CODEC_FLAC &&
966 p_stream->i_fourcc != VLC_CODEC_SPEEX &&
967 p_stream->i_fourcc != VLC_CODEC_THEORA &&
968 p_stream->i_fourcc != VLC_CODEC_DIRAC )
970 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
971 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
974 op.packet = p_data->p_buffer;
975 op.bytes = p_data->i_buffer;
978 op.packetno = p_stream->i_packet_no++;
980 if( p_stream->i_cat == AUDIO_ES )
982 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
983 p_stream->i_fourcc == VLC_CODEC_FLAC ||
984 p_stream->i_fourcc == VLC_CODEC_SPEEX )
986 /* number of sample from begining + current packet */
988 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
989 (mtime_t)p_input->p_fmt->audio.i_rate / INT64_C(1000000);
991 else if( p_stream->p_oggds_header )
993 /* number of sample from begining */
994 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
995 p_stream->p_oggds_header->i_samples_per_unit / INT64_C(1000000);
998 else if( p_stream->i_cat == VIDEO_ES )
1000 if( p_stream->i_fourcc == VLC_CODEC_THEORA )
1002 p_stream->i_num_frames++;
1003 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1005 p_stream->i_num_keyframes++;
1006 p_stream->i_last_keyframe = p_stream->i_num_frames;
1009 op.granulepos = (p_stream->i_last_keyframe << p_stream->i_keyframe_granule_shift )
1010 | (p_stream->i_num_frames-p_stream->i_last_keyframe);
1012 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
1014 mtime_t dt = (p_data->i_dts - p_sys->i_start_dts + 1)
1015 * p_input->p_fmt->video.i_frame_rate *2
1016 / p_input->p_fmt->video.i_frame_rate_base
1018 mtime_t delay = (p_data->i_pts - p_data->i_dts + 1)
1019 * p_input->p_fmt->video.i_frame_rate *2
1020 / p_input->p_fmt->video.i_frame_rate_base
1022 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1023 p_stream->i_last_keyframe = dt;
1024 mtime_t dist = dt - p_stream->i_last_keyframe;
1025 op.granulepos = dt << 31 | (dist&0xff00) << 14
1026 | (delay&0x1fff) << 9 | (dist&0xff);
1028 else if( p_stream->p_oggds_header )
1029 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
1030 p_stream->p_oggds_header->i_time_unit;
1032 else if( p_stream->i_cat == SPU_ES )
1034 /* granulepos is in millisec */
1035 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
1038 return VLC_EGENERIC;
1040 p_stream->u_last_granulepos = op.granulepos;
1041 ogg_stream_packetin( &p_stream->os, &op );
1043 if( p_stream->i_cat == SPU_ES ||
1044 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
1045 p_stream->i_fourcc == VLC_CODEC_DIRAC )
1047 /* Subtitles or Speex packets are quite small so they
1048 * need to be flushed to be sent on time */
1049 /* The OggDirac mapping suggests ever so strongly that a
1050 * page flush occurs after each OggDirac packet, so to make
1051 * the timestamps unambiguous */
1052 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
1056 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1061 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1062 p_stream->i_dts = -1;
1063 p_stream->i_length = 0;
1065 sout_AccessOutWrite( p_mux->p_access, p_og );
1069 if( p_stream->i_dts < 0 )
1071 p_stream->i_dts = p_data->i_dts;
1073 p_stream->i_length += p_data->i_length;
1076 block_Release( p_data );