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[vlc.git] / modules / mux / ogg.c
blob45b6846dc6c3155f9a9ea9069a8c9e47ed045b23
1 /*****************************************************************************
2 * ogg.c: ogg muxer module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001, 2002, 2006 VLC authors and VideoLAN
5 * $Id$
6 *
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
14 *
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 Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
24
25 /*****************************************************************************
26 * Preamble
27 *****************************************************************************/
28
29 #ifdef HAVE_CONFIG_H
30 # include "config.h"
31 #endif
32
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_sout.h>
36 #include <vlc_block.h>
37 #include <vlc_codecs.h>
38 #include <limits.h>
39 #include <vlc_rand.h>
40 #include "../demux/xiph.h"
41
42 #include <ogg/ogg.h>
43
44 /*****************************************************************************
45 * Module descriptor
46 *****************************************************************************/
47 #define INDEXINTVL_TEXT N_("Index interval")
48 #define INDEXINTVL_LONGTEXT N_("Minimal index interval, in microseconds. " \
49 "Set to 0 to disable index creation.")
50 #define INDEXRATIO_TEXT N_("Index size ratio")
51 #define INDEXRATIO_LONGTEXT N_(\
52 "Set index size ratio. Alters default (60min content) or estimated size." )
53
54 static int Open ( vlc_object_t * );
55 static void Close ( vlc_object_t * );
56
57 #define SOUT_CFG_PREFIX "sout-ogg-"
58
59 vlc_module_begin ()
60 set_description( N_("Ogg/OGM muxer") )
61 set_capability( "sout mux", 10 )
62 set_category( CAT_SOUT )
63 set_subcategory( SUBCAT_SOUT_MUX )
64 add_shortcut( "ogg", "ogm" )
65 add_integer_with_range( SOUT_CFG_PREFIX "indexintvl", 1000, 0, INT_MAX,
66 INDEXINTVL_TEXT, INDEXINTVL_LONGTEXT, true )
67 add_float_with_range( SOUT_CFG_PREFIX "indexratio", 1.0, 1.0, 1000,
68 INDEXRATIO_TEXT, INDEXRATIO_LONGTEXT, true )
69 set_callbacks( Open, Close )
70 vlc_module_end ()
71
72
73 /*****************************************************************************
74 * Exported prototypes
75 *****************************************************************************/
76 static int Control ( sout_mux_t *, int, va_list );
77 static int AddStream( sout_mux_t *, sout_input_t * );
78 static void DelStream( sout_mux_t *, sout_input_t * );
79 static int Mux ( sout_mux_t * );
80 static int MuxBlock ( sout_mux_t *, sout_input_t * );
81
82 static bool OggCreateHeaders( sout_mux_t * );
83 static void OggFillSkeletonFishead( uint8_t *p_buffer, sout_mux_t *p_mux );
84
85 /*****************************************************************************
86 * Misc declarations
87 *****************************************************************************/
88
89 /* Skeleton */
90 #define FISBONE_BASE_SIZE 52
91 #define FISBONE_BASE_OFFSET 44
92 #define INDEX_BASE_SIZE 42
93
94 /* Structures used for OggDS headers used in ogm files */
95
96 #define PACKET_TYPE_HEADER 0x01
97 #define PACKET_TYPE_COMMENT 0x03
98 #define PACKET_IS_SYNCPOINT 0x08
99
100 typedef struct
101 {
102 int32_t i_width;
103 int32_t i_height;
104 } oggds_header_video_t;
105
106 typedef struct
107 {
108 int16_t i_channels;
109 int16_t i_block_align;
110 int32_t i_avgbytespersec;
111 } oggds_header_audio_t;
112
113 typedef struct
114 {
115 uint8_t i_packet_type;
116
117 char stream_type[8];
118 char sub_type[4];
119
120 int32_t i_size;
121
122 int64_t i_time_unit;
123 int64_t i_samples_per_unit;
124 int32_t i_default_len;
125
126 int32_t i_buffer_size;
127 int16_t i_bits_per_sample;
128
129 int16_t i_padding_0; /* Because the original is using MSVC packing style */
130
131 union
132 {
133 oggds_header_video_t video;
134 oggds_header_audio_t audio;
135 } header;
136
137 int32_t i_padding_1; /* Because the original is using MSVC packing style */
138
139 } oggds_header_t;
140
141 /*****************************************************************************
142 * Definitions of structures and functions used by this plugins
143 *****************************************************************************/
144 typedef struct
145 {
146 int i_cat;
147 vlc_fourcc_t i_fourcc;
148
149 int b_new;
150
151 mtime_t i_dts;
152 mtime_t i_length;
153 int i_packet_no;
154 int i_serial_no;
155 int i_keyframe_granule_shift; /* Theora and Daala only */
156 int i_last_keyframe; /* dirac and theora */
157 int i_num_frames; /* Theora only */
158 uint64_t u_last_granulepos; /* Used for correct EOS page */
159 int64_t i_num_keyframes;
160 ogg_stream_state os;
161
162 oggds_header_t *p_oggds_header;
163 bool b_started;
164 bool b_finished;
165
166 struct
167 {
168 bool b_fisbone_done;
169 bool b_index_done;
170 /* Skeleton index storage */
171 unsigned char *p_index;
172 uint64_t i_index_size;
173 uint64_t i_index_payload; /* real index size */
174 uint64_t i_index_count;
175 /* backup values for rewriting index page later */
176 uint64_t i_index_offset; /* sout offset of the index page */
177 int64_t i_index_packetno; /* index packet no */
178 int i_index_pageno;
179 /* index creation tracking values */
180 uint64_t i_last_keyframe_pos;
181 uint64_t i_last_keyframe_time;
182 } skeleton;
183
184 int i_dirac_last_pt;
185 int i_dirac_last_dt;
186 mtime_t i_baseptsdelay;
187
188 } ogg_stream_t;
189
190 struct sout_mux_sys_t
191 {
192 int i_streams;
193
194 mtime_t i_start_dts;
195 int i_next_serial_no;
196
197 /* number of logical streams pending to be added */
198 int i_add_streams;
199 bool b_can_add_streams;
200
201 /* logical streams pending to be deleted */
202 int i_del_streams;
203 ogg_stream_t **pp_del_streams;
204
205 /* Skeleton */
206 struct
207 {
208 bool b_create;
209 int i_serial_no;
210 int i_packet_no;
211 ogg_stream_state os;
212 bool b_head_done;
213 /* backup values for rewriting fishead page later */
214 uint64_t i_fishead_offset; /* sout offset of the fishead page */
215 int i_index_intvl;
216 float i_index_ratio;
217 } skeleton;
218
219 /* access position */
220 ssize_t i_pos;
221 ssize_t i_data_start;
222 ssize_t i_segment_start;
223 };
224
225 static void OggSetDate( block_t *, mtime_t , mtime_t );
226 static block_t *OggStreamFlush( sout_mux_t *, ogg_stream_state *, mtime_t );
227 static void OggCreateStreamFooter( sout_mux_t *p_mux, ogg_stream_t *p_stream );
228 static void OggRewriteFisheadPage( sout_mux_t *p_mux );
229 static bool AllocateIndex( sout_mux_t *p_mux, sout_input_t *p_input );
230
231 /*****************************************************************************
232 * Open: Open muxer
233 *****************************************************************************/
234 static int Open( vlc_object_t *p_this )
235 {
236 sout_mux_t *p_mux = (sout_mux_t*)p_this;
237 sout_mux_sys_t *p_sys;
238
239 msg_Info( p_mux, "Open" );
240
241 p_sys = malloc( sizeof( sout_mux_sys_t ) );
242 if( !p_sys )
243 return VLC_ENOMEM;
244 p_sys->i_streams = 0;
245 p_sys->i_add_streams = 0;
246 p_sys->b_can_add_streams = true;
247 p_sys->i_del_streams = 0;
248 p_sys->pp_del_streams = 0;
249 p_sys->i_pos = 0;
250 p_sys->skeleton.b_create = false;
251 p_sys->skeleton.b_head_done = false;
252 p_sys->skeleton.i_index_intvl =
253 var_InheritInteger( p_this, SOUT_CFG_PREFIX "indexintvl" );
254 p_sys->skeleton.i_index_ratio =
255 var_InheritFloat( p_this, SOUT_CFG_PREFIX "indexratio" );
256 p_sys->i_data_start = 0;
257 p_sys->i_segment_start = 0;
258 p_mux->p_sys = p_sys;
259 p_mux->pf_control = Control;
260 p_mux->pf_addstream = AddStream;
261 p_mux->pf_delstream = DelStream;
262 p_mux->pf_mux = Mux;
263
264 /* First serial number is random.
265 * (Done like this because on win32 you need to seed the random number
266 * generator once per thread). */
267 uint32_t r;
268 vlc_rand_bytes(&r, sizeof(r));
269 p_sys->i_next_serial_no = r & INT_MAX;
270
271 return VLC_SUCCESS;
272 }
273
274 /*****************************************************************************
275 * Close: Finalize ogg bitstream and close muxer
276 *****************************************************************************/
277 static void Close( vlc_object_t * p_this )
278 {
279 sout_mux_t *p_mux = (sout_mux_t*)p_this;
280 sout_mux_sys_t *p_sys = p_mux->p_sys;
281 ogg_stream_t *p_stream;
282
283 msg_Info( p_mux, "Close" );
284
285 if( p_sys->i_del_streams )
286 {
287 /* Close the current ogg stream */
288 msg_Dbg( p_mux, "writing footers" );
289
290 for(int i = 0; i < p_mux->i_nb_inputs; i++ )
291 {
292 p_stream = (ogg_stream_t *) p_mux->pp_inputs[i]->p_sys;
293 OggCreateStreamFooter( p_mux, p_stream );
294 free( p_stream->skeleton.p_index );
295 }
296
297 /* Remove deleted logical streams */
298 for(int i = 0; i < p_sys->i_del_streams; i++ )
299 {
300 OggCreateStreamFooter( p_mux, p_sys->pp_del_streams[i] );
301 free( p_sys->pp_del_streams[i]->p_oggds_header );
302 free( p_sys->pp_del_streams[i]->skeleton.p_index );
303 free( p_sys->pp_del_streams[i] );
304 }
305 free( p_sys->pp_del_streams );
306 p_sys->i_streams -= p_sys->i_del_streams;
307 }
308
309 /* rewrite fishead with final values */
310 if ( p_sys->skeleton.b_create && p_sys->skeleton.b_head_done )
311 {
312 OggRewriteFisheadPage( p_mux );
313 }
314
315 free( p_sys );
316 }
317
318 /*****************************************************************************
319 * Control:
320 *****************************************************************************/
321 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
322 {
323 VLC_UNUSED(p_mux);
324 bool *pb_bool;
325 char **ppsz;
326
327 switch( i_query )
328 {
329 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
330 pb_bool = (bool*)va_arg( args, bool * );
331 *pb_bool = true;
332 return VLC_SUCCESS;
333
334 case MUX_GET_ADD_STREAM_WAIT:
335 pb_bool = (bool*)va_arg( args, bool * );
336 *pb_bool = true;
337 return VLC_SUCCESS;
338
339 case MUX_GET_MIME:
340 ppsz = (char**)va_arg( args, char ** );
341 *ppsz = strdup( "application/ogg" );
342 return VLC_SUCCESS;
343
344 default:
345 return VLC_EGENERIC;
346 }
347 }
348 /*****************************************************************************
349 * AddStream: Add an elementary stream to the muxed stream
350 *****************************************************************************/
351 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
352 {
353 sout_mux_sys_t *p_sys = p_mux->p_sys;
354 ogg_stream_t *p_stream;
355 uint16_t i_tag;
356
357 msg_Dbg( p_mux, "adding input" );
358
359 p_input->p_sys = p_stream = calloc( 1, sizeof( ogg_stream_t ) );
360 if( !p_stream )
361 return VLC_ENOMEM;
362
363 p_stream->i_cat = p_input->p_fmt->i_cat;
364 p_stream->i_fourcc = p_input->p_fmt->i_codec;
365 p_stream->i_serial_no = p_sys->i_next_serial_no++;
366 p_stream->i_packet_no = 0;
367 p_stream->i_last_keyframe = 0;
368 p_stream->i_num_keyframes = 0;
369 p_stream->i_num_frames = 0;
370
371 p_stream->p_oggds_header = 0;
372
373 p_stream->i_baseptsdelay = -1;
374 p_stream->i_dirac_last_pt = -1;
375 p_stream->i_dirac_last_dt = -1;
376
377 switch( p_input->p_fmt->i_cat )
378 {
379 case VIDEO_ES:
380 if( !p_input->p_fmt->video.i_frame_rate ||
381 !p_input->p_fmt->video.i_frame_rate_base )
382 {
383 msg_Warn( p_mux, "Missing frame rate, assuming 25fps" );
384 assert(p_input->p_fmt == &p_input->fmt);
385 p_input->fmt.video.i_frame_rate = 25;
386 p_input->fmt.video.i_frame_rate_base = 1;
387 }
388
389 switch( p_stream->i_fourcc )
390 {
391 case VLC_CODEC_MP4V:
392 case VLC_CODEC_MPGV:
393 case VLC_CODEC_MP1V:
394 case VLC_CODEC_MP2V:
395 case VLC_CODEC_DIV3:
396 case VLC_CODEC_MJPG:
397 case VLC_CODEC_WMV1:
398 case VLC_CODEC_WMV2:
399 case VLC_CODEC_WMV3:
400 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
401 if( !p_stream->p_oggds_header )
402 {
403 free( p_stream );
404 return VLC_ENOMEM;
405 }
406 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
407
408 memcpy( p_stream->p_oggds_header->stream_type, "video", 5 );
409 if( p_stream->i_fourcc == VLC_CODEC_MP4V )
410 {
411 memcpy( p_stream->p_oggds_header->sub_type, "XVID", 4 );
412 }
413 else if( p_stream->i_fourcc == VLC_CODEC_DIV3 )
414 {
415 memcpy( p_stream->p_oggds_header->sub_type, "DIV3", 4 );
416 }
417 else
418 {
419 memcpy( p_stream->p_oggds_header->sub_type,
420 &p_stream->i_fourcc, 4 );
421 }
422 p_stream->p_oggds_header->i_size = 0 ;
423 p_stream->p_oggds_header->i_time_unit =
424 INT64_C(10000000) * p_input->p_fmt->video.i_frame_rate_base /
425 (int64_t)p_input->p_fmt->video.i_frame_rate;
426 p_stream->p_oggds_header->i_samples_per_unit = 1;
427 p_stream->p_oggds_header->i_default_len = 1 ; /* ??? */
428 p_stream->p_oggds_header->i_buffer_size = 1024*1024;
429 p_stream->p_oggds_header->i_bits_per_sample = 0;
430 p_stream->p_oggds_header->header.video.i_width = p_input->p_fmt->video.i_width;
431 p_stream->p_oggds_header->header.video.i_height = p_input->p_fmt->video.i_height;
432 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
433 break;
434
435 case VLC_CODEC_DIRAC:
436 msg_Dbg( p_mux, "dirac stream" );
437 break;
438
439 case VLC_CODEC_THEORA:
440 msg_Dbg( p_mux, "theora stream" );
441 break;
442
443 case VLC_CODEC_DAALA:
444 msg_Dbg( p_mux, "daala stream" );
445 break;
446
447 case VLC_CODEC_VP8:
448 msg_Dbg( p_mux, "VP8 stream" );
449 break;
450
451 default:
452 FREENULL( p_input->p_sys );
453 return VLC_EGENERIC;
454 }
455 break;
456
457 case AUDIO_ES:
458 switch( p_stream->i_fourcc )
459 {
460 case VLC_CODEC_OPUS:
461 msg_Dbg( p_mux, "opus stream" );
462 break;
463
464 case VLC_CODEC_VORBIS:
465 msg_Dbg( p_mux, "vorbis stream" );
466 break;
467
468 case VLC_CODEC_SPEEX:
469 msg_Dbg( p_mux, "speex stream" );
470 break;
471
472 case VLC_CODEC_FLAC:
473 msg_Dbg( p_mux, "flac stream" );
474 break;
475
476 default:
477 fourcc_to_wf_tag( p_stream->i_fourcc, &i_tag );
478 if( i_tag == WAVE_FORMAT_UNKNOWN )
479 {
480 FREENULL( p_input->p_sys );
481 return VLC_EGENERIC;
482 }
483
484 p_stream->p_oggds_header =
485 malloc( sizeof(oggds_header_t) + p_input->p_fmt->i_extra );
486 if( !p_stream->p_oggds_header )
487 {
488 free( p_stream );
489 return VLC_ENOMEM;
490 }
491 memset( p_stream->p_oggds_header, 0, sizeof(oggds_header_t) );
492 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
493
494 p_stream->p_oggds_header->i_size = p_input->p_fmt->i_extra;
495
496 if( p_input->p_fmt->i_extra )
497 {
498 memcpy( &p_stream->p_oggds_header[1],
499 p_input->p_fmt->p_extra, p_input->p_fmt->i_extra );
500 }
501
502 memcpy( p_stream->p_oggds_header->stream_type, "audio", 5 );
503
504 memset( p_stream->p_oggds_header->sub_type, 0, 4 );
505 char buf[5];
506 snprintf( buf, sizeof(buf), "%"PRIx16, i_tag );
507 strncpy( p_stream->p_oggds_header->sub_type, buf, 4 );
508
509 p_stream->p_oggds_header->i_time_unit = INT64_C(10000000);
510 p_stream->p_oggds_header->i_default_len = 1;
511 p_stream->p_oggds_header->i_buffer_size = 30*1024 ;
512 p_stream->p_oggds_header->i_samples_per_unit = p_input->p_fmt->audio.i_rate;
513 p_stream->p_oggds_header->i_bits_per_sample = p_input->p_fmt->audio.i_bitspersample;
514 p_stream->p_oggds_header->header.audio.i_channels = p_input->p_fmt->audio.i_channels;
515 p_stream->p_oggds_header->header.audio.i_block_align = p_input->p_fmt->audio.i_blockalign;
516 p_stream->p_oggds_header->header.audio.i_avgbytespersec = p_input->p_fmt->i_bitrate / 8;
517 msg_Dbg( p_mux, "%4.4s stream", (char *)&p_stream->i_fourcc );
518 break;
519 }
520 break;
521
522 case SPU_ES:
523 switch( p_stream->i_fourcc )
524 {
525 case VLC_CODEC_SUBT:
526 p_stream->p_oggds_header = calloc( 1, sizeof(oggds_header_t) );
527 if( !p_stream->p_oggds_header )
528 {
529 free( p_stream );
530 return VLC_ENOMEM;
531 }
532 p_stream->p_oggds_header->i_packet_type = PACKET_TYPE_HEADER;
533
534 memcpy( p_stream->p_oggds_header->stream_type, "text", 4 );
535 msg_Dbg( p_mux, "subtitles stream" );
536 break;
537
538 default:
539 FREENULL( p_input->p_sys );
540 return VLC_EGENERIC;
541 }
542 break;
543 default:
544 FREENULL( p_input->p_sys );
545 return VLC_EGENERIC;
546 }
547
548 p_stream->b_new = true;
549
550 p_sys->i_add_streams++;
551
552 return VLC_SUCCESS;
553 }
554
555 /*****************************************************************************
556 * DelStream: Delete an elementary stream from the muxed stream
557 *****************************************************************************/
558 static void DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
559 {
560 sout_mux_sys_t *p_sys = p_mux->p_sys;
561 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
562 block_t *p_og;
563
564 msg_Dbg( p_mux, "removing input" );
565
566 /* flush all remaining data */
567 if( p_input->p_sys )
568 {
569 if( !p_stream->b_new )
570 {
571 while( block_FifoCount( p_input->p_fifo ) )
572 MuxBlock( p_mux, p_input );
573 }
574
575 if( !p_stream->b_new &&
576 ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
577 {
578 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
579 p_mux->p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
580 }
581
582 /* move input in delete queue */
583 if( !p_stream->b_new )
584 {
585 p_sys->pp_del_streams = xrealloc( p_sys->pp_del_streams,
586 (p_sys->i_del_streams + 1) * sizeof(ogg_stream_t *) );
587 p_sys->pp_del_streams[p_sys->i_del_streams++] = p_stream;
588 }
589 else
590 {
591 /* wasn't already added so get rid of it */
592 FREENULL( p_stream->p_oggds_header );
593 FREENULL( p_stream );
594 p_sys->i_add_streams--;
595 }
596 }
597
598 p_input->p_sys = NULL;
599 }
600
601 /*****************************************************************************
602 * Ogg Skeleton helpers
603 *****************************************************************************/
604 static int WriteQWVariableLE( uint64_t i_64, uint64_t i_offset,
605 uint8_t *p_buffer, int i_buffer_size )
606 {
607 uint8_t *p_dest = p_buffer + i_offset;
608 int i_written = 0;
609
610 for(;;)
611 {
612 if ( p_dest - p_buffer >= i_buffer_size ) return -1;
613
614 *p_dest = (uint8_t) ( i_64 & 0x7F );
615 i_64 >>= 7;
616 i_written++;
617
618 if ( i_64 == 0 )
619 {
620 *p_dest |= 0x80;
621 return i_written;
622 }
623
624 p_dest++;
625 }
626 }
627
628 static bool AddIndexEntry( sout_mux_t *p_mux, uint64_t i_time, sout_input_t *p_input )
629 {
630 sout_mux_sys_t *p_sys = p_mux->p_sys;
631 ogg_stream_t *p_stream = (ogg_stream_t *) p_input->p_sys;
632 uint64_t i_posdelta;
633 uint64_t i_timedelta;
634 if ( !p_sys->skeleton.b_create || p_mux->p_sys->skeleton.i_index_intvl == 0
635 || !p_stream->skeleton.p_index )
636 return false;
637
638 if ( p_stream->skeleton.i_last_keyframe_pos == 0 )
639 p_stream->skeleton.i_last_keyframe_pos = p_sys->i_segment_start;
640 i_posdelta = p_sys->i_pos - p_stream->skeleton.i_last_keyframe_pos;
641 i_timedelta = i_time - p_stream->skeleton.i_last_keyframe_time;
642
643 if ( i_timedelta <= ( (uint64_t) p_mux->p_sys->skeleton.i_index_intvl * 1000 )
644 || i_posdelta <= 0xFFFF )
645 return false;
646
647 /* do inserts */
648 int i_ret;
649 if ( !p_stream->skeleton.p_index ) return false;
650 uint64_t i_offset = p_stream->skeleton.i_index_payload;
651 i_ret = WriteQWVariableLE( i_posdelta, i_offset, p_stream->skeleton.p_index,
652 p_stream->skeleton.i_index_size );
653 if ( i_ret == -1 ) return false;
654 i_offset += i_ret;
655 i_ret = WriteQWVariableLE( i_timedelta, i_offset, p_stream->skeleton.p_index,
656 p_stream->skeleton.i_index_size );
657 if ( i_ret == -1 ) return false;
658 p_stream->skeleton.i_index_payload = i_offset + i_ret;
659 p_stream->skeleton.i_index_count++;
660
661 /* update diff points */
662 p_stream->skeleton.i_last_keyframe_pos = p_sys->i_pos;
663 p_stream->skeleton.i_last_keyframe_time = i_time;
664 msg_Dbg( p_mux, "Added index on stream %d entry %zd %"PRIu64,
665 p_stream->i_serial_no, p_sys->i_pos - p_sys->i_segment_start, i_time );
666
667 return true;
668 }
669
670 /*****************************************************************************
671 * Ogg bitstream manipulation routines
672 *****************************************************************************/
673 static block_t *OggStreamGetPage( sout_mux_t *p_mux,
674 ogg_stream_state *p_os, mtime_t i_pts,
675 bool flush )
676 {
677 (void)p_mux;
678 block_t *p_og, *p_og_first = NULL;
679 ogg_page og;
680 int (*pager)( ogg_stream_state*, ogg_page* ) = flush ? ogg_stream_flush : ogg_stream_pageout;
681
682 while( pager( p_os, &og ) )
683 {
684 /* Flush all data */
685 p_og = block_Alloc( og.header_len + og.body_len );
686
687 memcpy( p_og->p_buffer, og.header, og.header_len );
688 memcpy( p_og->p_buffer + og.header_len, og.body, og.body_len );
689 p_og->i_dts = 0;
690 p_og->i_pts = i_pts;
691 p_og->i_length = 0;
692
693 i_pts = 0; // write it only once
694
695 block_ChainAppend( &p_og_first, p_og );
696 }
697
698 return p_og_first;
699 }
700
701 static block_t *OggStreamFlush( sout_mux_t *p_mux,
702 ogg_stream_state *p_os, mtime_t i_pts )
703 {
704 return OggStreamGetPage( p_mux, p_os, i_pts, true );
705 }
706
707 static block_t *OggStreamPageOut( sout_mux_t *p_mux,
708 ogg_stream_state *p_os, mtime_t i_pts )
709 {
710 return OggStreamGetPage( p_mux, p_os, i_pts, false );
711 }
712
713 static void OggGetSkeletonIndex( uint8_t **pp_buffer, long *pi_size, ogg_stream_t *p_stream )
714 {
715 uint8_t *p_buffer = calloc( INDEX_BASE_SIZE + p_stream->skeleton.i_index_size, sizeof(uint8_t) );
716 if ( !p_buffer ) return;
717 *pp_buffer = p_buffer;
718
719 memcpy( p_buffer, "index", 6 );
720 SetDWLE( &p_buffer[6], p_stream->i_serial_no );
721 SetQWLE( &p_buffer[10], p_stream->skeleton.i_index_count ); /* num keypoints */
722 SetQWLE( &p_buffer[18], 1000000 );
723 SetQWLE( &p_buffer[34], p_stream->i_length );
724 memcpy( p_buffer + INDEX_BASE_SIZE, p_stream->skeleton.p_index, p_stream->skeleton.i_index_payload );
725 *pi_size = INDEX_BASE_SIZE + p_stream->skeleton.i_index_size;
726 }
727
728 static void OggGetSkeletonFisbone( uint8_t **pp_buffer, long *pi_size,
729 sout_input_t *p_input, sout_mux_t *p_mux )
730 {
731 uint8_t *psz_header;
732 uint8_t *p_buffer;
733 const char *psz_value = NULL;
734 ogg_stream_t *p_stream = (ogg_stream_t *) p_input->p_sys;
735 struct
736 {
737 char *psz_content_type;
738 char *psz_role;
739 long int i_size;
740 unsigned int i_count;
741 } headers = { NULL, NULL, 0, 0 };
742 *pi_size = 0;
743
744 switch( p_stream->i_fourcc )
745 {
746 case VLC_CODEC_VORBIS:
747 psz_value = "audio/vorbis";
748 break;
749 case VLC_CODEC_THEORA:
750 psz_value = "video/theora";
751 break;
752 case VLC_CODEC_DAALA:
753 psz_value = "video/daala";
754 break;
755 case VLC_CODEC_SPEEX:
756 psz_value = "audio/speex";
757 break;
758 case VLC_CODEC_FLAC:
759 psz_value = "audio/flac";
760 break;
761 case VLC_CODEC_CMML:
762 psz_value = "text/cmml";
763 break;
764 case VLC_CODEC_KATE:
765 psz_value = "application/kate";
766 break;
767 case VLC_CODEC_VP8:
768 psz_value = "video/x-vp8";
769 break;
770 default:
771 psz_value = "application/octet-stream";
772 msg_Warn( p_mux, "Unknown fourcc for stream %s, setting Content-Type to %s",
773 vlc_fourcc_GetDescription( p_stream->i_cat, p_stream->i_fourcc ),
774 psz_value );
775 }
776
777 /* Content Type Header */
778 if ( asprintf( &headers.psz_content_type, "Content-Type: %s\r\n", psz_value ) != -1 )
779 {
780 headers.i_size += strlen( headers.psz_content_type );
781 headers.i_count++;
782 }
783
784 /* Set Role Header */
785 if ( p_input->p_fmt->i_priority > ES_PRIORITY_NOT_SELECTABLE )
786 {
787 int i_max_prio = ES_PRIORITY_MIN;
788 for ( int i=0; i< p_mux->i_nb_inputs; i++ )
789 {
790 if ( p_mux->pp_inputs[i]->p_fmt->i_cat != p_input->p_fmt->i_cat ) continue;
791 i_max_prio = __MAX( p_mux->pp_inputs[i]->p_fmt->i_priority, i_max_prio );
792 }
793
794 psz_value = NULL;
795 if ( p_input->p_fmt->i_cat == AUDIO_ES || p_input->p_fmt->i_cat == VIDEO_ES )
796 {
797 if ( p_input->p_fmt->i_priority == i_max_prio && i_max_prio >= ES_PRIORITY_SELECTABLE_MIN )
798 psz_value = ( p_input->p_fmt->i_cat == VIDEO_ES ) ?
799 "video/main" : "audio/main";
800 else
801 psz_value = ( p_input->p_fmt->i_cat == VIDEO_ES ) ?
802 "video/alternate" : "audio/alternate";
803 }
804 else if ( p_input->p_fmt->i_cat == SPU_ES )
805 {
806 psz_value = ( p_input->p_fmt->i_codec == VLC_CODEC_KATE ) ?
807 "text/karaoke" : "text/subtitle";
808 }
809
810 if ( psz_value && asprintf( &headers.psz_role, "Role: %s\r\n", psz_value ) != -1 )
811 {
812 headers.i_size += strlen( headers.psz_role );
813 headers.i_count++;
814 }
815 }
816
817 *pp_buffer = calloc( FISBONE_BASE_SIZE + headers.i_size, sizeof(uint8_t) );
818 if ( !*pp_buffer ) return;
819 p_buffer = *pp_buffer;
820
821 memcpy( p_buffer, "fisbone", 8 );
822 SetDWLE( &p_buffer[8], FISBONE_BASE_OFFSET ); /* offset to message headers */
823 SetDWLE( &p_buffer[12], p_stream->i_serial_no );
824 SetDWLE( &p_buffer[16], headers.i_count );
825
826 /* granulerate den */
827 switch ( p_input->p_fmt->i_cat )
828 {
829 case VIDEO_ES:
830 SetQWLE( &(*pp_buffer)[20], p_input->p_fmt->video.i_frame_rate );
831 SetQWLE( &(*pp_buffer)[28], p_input->p_fmt->video.i_frame_rate_base );
832 break;
833 case AUDIO_ES:
834 SetQWLE( &(*pp_buffer)[20], p_input->p_fmt->audio.i_rate );
835 SetQWLE( &(*pp_buffer)[28], 1 );
836 break;
837 default:
838 SetQWLE( &(*pp_buffer)[20], 1000 );
839 SetQWLE( &(*pp_buffer)[28], 1 );
840 }
841
842 /* preroll */
843 if ( p_input->p_fmt->p_extra )
844 SetDWLE( &(*pp_buffer)[44], xiph_CountHeaders( p_input->p_fmt->p_extra, p_input->p_fmt->i_extra ) );
845
846 if ( headers.i_size > 0 )
847 {
848 psz_header = *pp_buffer + FISBONE_BASE_SIZE;
849 memcpy( psz_header, headers.psz_content_type, strlen( headers.psz_content_type ) );
850 psz_header += strlen( headers.psz_content_type );
851 if ( headers.psz_role )
852 memcpy( psz_header, headers.psz_role, strlen( headers.psz_role ) );
853 }
854 *pi_size = FISBONE_BASE_SIZE + headers.i_size;
855
856 free( headers.psz_content_type );
857 free( headers.psz_role );
858 }
859
860 static void OggFillSkeletonFishead( uint8_t *p_buffer, sout_mux_t *p_mux )
861 {
862 memcpy( p_buffer, "fishead", 8 );
863 SetWLE( &p_buffer[8], 4 );
864 SetWLE( &p_buffer[10], 0 );
865 SetQWLE( &p_buffer[20], 1000 );
866 SetQWLE( &p_buffer[36], 1000 );
867 SetQWLE( &p_buffer[64], p_mux->p_sys->i_pos - p_mux->p_sys->i_segment_start ); /* segment length */
868 SetQWLE( &p_buffer[72], p_mux->p_sys->i_data_start - p_mux->p_sys->i_segment_start ); /* data start offset */
869 }
870
871 static int32_t OggFillDsHeader( uint8_t *p_buffer, oggds_header_t *p_oggds_header, int i_cat )
872 {
873 int index = 0;
874 p_buffer[index] = p_oggds_header->i_packet_type;
875 index++;
876 memcpy( &p_buffer[index], p_oggds_header->stream_type, sizeof(p_oggds_header->stream_type) );
877 index += sizeof(p_oggds_header->stream_type);
878 memcpy(&p_buffer[index], p_oggds_header->sub_type, sizeof(p_oggds_header->sub_type) );
879 index += sizeof(p_oggds_header->sub_type);
880
881 /* The size is filled at the end */
882 uint8_t *p_isize = &p_buffer[index];
883 index += 4;
884
885 SetQWLE( &p_buffer[index], p_oggds_header->i_time_unit );
886 index += 8;
887 SetQWLE( &p_buffer[index], p_oggds_header->i_samples_per_unit );
888 index += 8;
889 SetDWLE( &p_buffer[index], p_oggds_header->i_default_len );
890 index += 4;
891 SetDWLE( &p_buffer[index], p_oggds_header->i_buffer_size );
892 index += 4;
893 SetWLE( &p_buffer[index], p_oggds_header->i_bits_per_sample );
894 index += 2;
895 SetWLE( &p_buffer[index], p_oggds_header->i_padding_0 );
896 index += 2;
897 /* audio or video */
898 switch( i_cat )
899 {
900 case VIDEO_ES:
901 SetDWLE( &p_buffer[index], p_oggds_header->header.video.i_width );
902 SetDWLE( &p_buffer[index+4], p_oggds_header->header.video.i_height );
903 break;
904 case AUDIO_ES:
905 SetWLE( &p_buffer[index], p_oggds_header->header.audio.i_channels );
906 SetWLE( &p_buffer[index+2], p_oggds_header->header.audio.i_block_align );
907 SetDWLE( &p_buffer[index+4], p_oggds_header->header.audio.i_avgbytespersec );
908 break;
909 }
910 index += 8;
911 SetDWLE( &p_buffer[index], p_oggds_header->i_padding_1 );
912 index += 4;
913
914 /* extra header */
915 if( p_oggds_header->i_size > 0 )
916 {
917 memcpy( &p_buffer[index], (uint8_t *) p_oggds_header + sizeof(*p_oggds_header), p_oggds_header->i_size );
918 index += p_oggds_header->i_size;
919 }
920
921 SetDWLE( p_isize, index-1 );
922 return index;
923 }
924
925 static void OggFillVP8Header( uint8_t *p_buffer, sout_input_t *p_input )
926 {
927 memcpy( p_buffer, "OVP80\x01\x01\x00", 8 );
928 SetWBE( &p_buffer[8], p_input->p_fmt->video.i_width );
929 SetDWBE( &p_buffer[14], p_input->p_fmt->video.i_sar_den );/* 24 bits, 15~ */
930 SetDWBE( &p_buffer[11], p_input->p_fmt->video.i_sar_num );/* 24 bits, 12~ */
931 SetWBE( &p_buffer[10], p_input->p_fmt->video.i_height );
932 SetDWBE( &p_buffer[18], p_input->p_fmt->video.i_frame_rate );
933 SetDWBE( &p_buffer[22], p_input->p_fmt->video.i_frame_rate_base );
934 }
935
936 static bool OggCreateHeaders( sout_mux_t *p_mux )
937 {
938 block_t *p_hdr = NULL;
939 block_t *p_og = NULL;
940 ogg_packet op;
941 ogg_stream_t *p_stream;
942 sout_mux_sys_t *p_sys = p_mux->p_sys;
943 int i;
944
945 if( sout_AccessOutControl( p_mux->p_access,
946 ACCESS_OUT_CAN_SEEK,
947 &p_sys->skeleton.b_create ) )
948 {
949 p_sys->skeleton.b_create = false;
950 }
951
952 p_sys->skeleton.b_create &= !! p_mux->i_nb_inputs;
953
954 /* no skeleton for solo vorbis/speex/opus tracks */
955 if ( p_mux->i_nb_inputs == 1 && p_mux->pp_inputs[0]->p_fmt->i_cat == AUDIO_ES )
956 {
957 p_sys->skeleton.b_create = false;
958 }
959 else
960 {
961 for ( int i=0; i< p_mux->i_nb_inputs; i++ )
962 {
963 p_stream = (ogg_stream_t*) p_mux->pp_inputs[i]->p_sys;
964 if ( p_stream->p_oggds_header )
965 {
966 /* We don't want skeleton for OggDS */
967 p_sys->skeleton.b_create = false;
968 break;
969 }
970 }
971 }
972
973 /* Skeleton's Fishead must be the first page of the stream */
974 if ( p_sys->skeleton.b_create && !p_sys->skeleton.b_head_done )
975 {
976 msg_Dbg( p_mux, "creating header for skeleton" );
977 p_sys->skeleton.i_serial_no = p_sys->i_next_serial_no++;
978 ogg_stream_init( &p_sys->skeleton.os, p_sys->skeleton.i_serial_no );
979 op.bytes = 80;
980 op.packet = calloc( 1, op.bytes );
981 if ( op.packet == NULL ) return false;
982 op.b_o_s = 1;
983 op.e_o_s = 0;
984 op.granulepos = 0;
985 op.packetno = 0;
986 OggFillSkeletonFishead( op.packet, p_mux );
987 ogg_stream_packetin( &p_sys->skeleton.os, &op );
988 p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
989 block_ChainAppend( &p_hdr, p_og );
990 p_sys->skeleton.b_head_done = true;
991 p_sys->skeleton.i_fishead_offset = p_sys->i_pos;
992 }
993
994 /* Write header for each stream. All b_o_s (beginning of stream) packets
995 * must appear first in the ogg stream so we take care of them first. */
996 for( int pass = 0; pass < 2; pass++ )
997 {
998 for( i = 0; i < p_mux->i_nb_inputs; i++ )
999 {
1000 sout_input_t *p_input = p_mux->pp_inputs[i];
1001 p_stream = (ogg_stream_t*)p_input->p_sys;
1002
1003 bool video = ( p_stream->i_fourcc == VLC_CODEC_THEORA ||
1004 p_stream->i_fourcc == VLC_CODEC_DIRAC ||
1005 p_stream->i_fourcc == VLC_CODEC_DAALA );
1006 if( ( ( pass == 0 && !video ) || ( pass == 1 && video ) ) )
1007 continue;
1008
1009 msg_Dbg( p_mux, "creating header for %4.4s",
1010 (char *)&p_stream->i_fourcc );
1011
1012 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
1013 p_stream->b_new = false;
1014 p_stream->i_packet_no = 0;
1015 p_stream->b_started = true;
1016
1017 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
1018 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
1019 p_stream->i_fourcc == VLC_CODEC_OPUS ||
1020 p_stream->i_fourcc == VLC_CODEC_THEORA ||
1021 p_stream->i_fourcc == VLC_CODEC_DAALA )
1022 {
1023 /* First packet in order: vorbis/speex/opus/theora/daala info */
1024 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
1025 void *pp_data[XIPH_MAX_HEADER_COUNT];
1026 unsigned i_count;
1027 if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
1028 p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
1029 {
1030 i_count = 0;
1031 pi_size[0] = 0;
1032 pp_data[0] = NULL;
1033 }
1034
1035 op.bytes = pi_size[0];
1036 op.packet = pp_data[0];
1037 if( pi_size[0] <= 0 )
1038 msg_Err( p_mux, "header data corrupted");
1039
1040 op.b_o_s = 1;
1041 op.e_o_s = 0;
1042 op.granulepos = 0;
1043 op.packetno = p_stream->i_packet_no++;
1044 ogg_stream_packetin( &p_stream->os, &op );
1045 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1046
1047 /* Get keyframe_granule_shift for theora or daala granulepos calculation */
1048 if( p_stream->i_fourcc == VLC_CODEC_THEORA ||
1049 p_stream->i_fourcc == VLC_CODEC_DAALA )
1050 {
1051 p_stream->i_keyframe_granule_shift =
1052 ( (op.packet[40] & 0x03) << 3 ) | ( (op.packet[41] & 0xe0) >> 5 );
1053 }
1054 }
1055 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
1056 {
1057 op.packet = p_input->p_fmt->p_extra;
1058 op.bytes = p_input->p_fmt->i_extra;
1059 op.b_o_s = 1;
1060 op.e_o_s = 0;
1061 op.granulepos = ~0;
1062 op.packetno = p_stream->i_packet_no++;
1063 ogg_stream_packetin( &p_stream->os, &op );
1064 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1065 }
1066 else if( p_stream->i_fourcc == VLC_CODEC_FLAC )
1067 {
1068 /* flac stream marker (yeah, only that in the 1st packet) */
1069 op.packet = (unsigned char *)"fLaC";
1070 op.bytes = 4;
1071 op.b_o_s = 1;
1072 op.e_o_s = 0;
1073 op.granulepos = 0;
1074 op.packetno = p_stream->i_packet_no++;
1075 ogg_stream_packetin( &p_stream->os, &op );
1076 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1077 }
1078 else if( p_stream->i_fourcc == VLC_CODEC_VP8 )
1079 {
1080 /* VP8 Header */
1081 op.packet = malloc( 26 );
1082 if( !op.packet )
1083 return false;
1084 op.bytes = 26;
1085 OggFillVP8Header( op.packet, p_input );
1086 op.b_o_s = 1;
1087 op.e_o_s = 0;
1088 op.granulepos = 0;
1089 op.packetno = p_stream->i_packet_no++;
1090 ogg_stream_packetin( &p_stream->os, &op );
1091 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1092 free( op.packet );
1093 }
1094 else if( p_stream->p_oggds_header )
1095 {
1096 /* ds header */
1097 op.packet = malloc( sizeof(*p_stream->p_oggds_header) + p_stream->p_oggds_header->i_size );
1098 if( !op.packet )
1099 return false;
1100 op.bytes = OggFillDsHeader( op.packet, p_stream->p_oggds_header, p_stream->i_cat );
1101 op.b_o_s = 1;
1102 op.e_o_s = 0;
1103 op.granulepos = 0;
1104 op.packetno = p_stream->i_packet_no++;
1105 ogg_stream_packetin( &p_stream->os, &op );
1106 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1107 free( op.packet );
1108 }
1109
1110 block_ChainAppend( &p_hdr, p_og );
1111 }
1112 }
1113
1114 /* Create fisbones if any */
1115 if ( p_sys->skeleton.b_create )
1116 {
1117 for( i = 0; i < p_mux->i_nb_inputs; i++ )
1118 {
1119 sout_input_t *p_input = p_mux->pp_inputs[i];
1120 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
1121 if ( p_stream->skeleton.b_fisbone_done ) continue;
1122 OggGetSkeletonFisbone( &op.packet, &op.bytes, p_input, p_mux );
1123 if ( op.packet == NULL ) return false;
1124 op.b_o_s = 0;
1125 op.e_o_s = 0;
1126 op.granulepos = 0;
1127 op.packetno = p_sys->skeleton.i_packet_no++;
1128 ogg_stream_packetin( &p_sys->skeleton.os, &op );
1129 p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
1130 block_ChainAppend( &p_hdr, p_og );
1131 p_stream->skeleton.b_fisbone_done = true;
1132 }
1133 }
1134
1135 /* Write previous headers */
1136 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
1137 {
1138 /* flag headers to be resent for streaming clients */
1139 p_og->i_flags |= BLOCK_FLAG_HEADER;
1140 }
1141 p_mux->p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_hdr );
1142 p_hdr = NULL;
1143
1144 /* Create indexes if any */
1145 for( i = 0; i < p_mux->i_nb_inputs; i++ )
1146 {
1147 sout_input_t *p_input = p_mux->pp_inputs[i];
1148 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
1149 /* flush stream && save offset */
1150 if ( p_sys->skeleton.b_create && !p_stream->skeleton.b_index_done )
1151 {
1152 if ( !p_stream->skeleton.p_index ) AllocateIndex( p_mux, p_input );
1153 if ( p_stream->skeleton.p_index )
1154 {
1155 msg_Dbg( p_mux, "Creating index for stream %d", p_stream->i_serial_no );
1156 OggGetSkeletonIndex( &op.packet, &op.bytes, p_stream );
1157 if ( op.packet == NULL ) return false;
1158 op.b_o_s = 0;
1159 op.e_o_s = 0;
1160 op.granulepos = 0;
1161 op.packetno = p_sys->skeleton.i_packet_no++;
1162
1163 /* backup some values */
1164 p_stream->skeleton.i_index_offset = p_mux->p_sys->i_pos;
1165 p_stream->skeleton.i_index_packetno = p_sys->skeleton.os.packetno;
1166 p_stream->skeleton.i_index_pageno = p_sys->skeleton.os.pageno;
1167
1168 ogg_stream_packetin( &p_sys->skeleton.os, &op );
1169 p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
1170 p_mux->p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
1171 }
1172 p_stream->skeleton.b_index_done = true;
1173 }
1174 }
1175
1176 /* Take care of the non b_o_s headers */
1177 for( i = 0; i < p_mux->i_nb_inputs; i++ )
1178 {
1179 sout_input_t *p_input = p_mux->pp_inputs[i];
1180 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
1181
1182 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
1183 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
1184 p_stream->i_fourcc == VLC_CODEC_OPUS ||
1185 p_stream->i_fourcc == VLC_CODEC_THEORA ||
1186 p_stream->i_fourcc == VLC_CODEC_DAALA )
1187 {
1188 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
1189 void *pp_data[XIPH_MAX_HEADER_COUNT];
1190 unsigned i_count;
1191 if( xiph_SplitHeaders( pi_size, pp_data, &i_count,
1192 p_input->p_fmt->i_extra, p_input->p_fmt->p_extra ) )
1193 i_count = 0;
1194
1195 /* Special case, headers are already there in the incoming stream.
1196 * We need to gather them an mark them as headers. */
1197 for( unsigned i = 1; i < i_count; i++ )
1198 {
1199 op.bytes = pi_size[i];
1200 op.packet = pp_data[i];
1201 if( pi_size[i] <= 0 )
1202 msg_Err( p_mux, "header data corrupted");
1203
1204 op.b_o_s = 0;
1205 op.e_o_s = 0;
1206 op.granulepos = 0;
1207 op.packetno = p_stream->i_packet_no++;
1208 ogg_stream_packetin( &p_stream->os, &op );
1209 msg_Dbg( p_mux, "adding non bos, secondary header" );
1210 if( i == i_count - 1 )
1211 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1212 else
1213 p_og = OggStreamPageOut( p_mux, &p_stream->os, 0 );
1214 if( p_og )
1215 block_ChainAppend( &p_hdr, p_og );
1216 }
1217 }
1218 else if( p_stream->i_fourcc != VLC_CODEC_FLAC &&
1219 p_stream->i_fourcc != VLC_CODEC_DIRAC )
1220 {
1221 uint8_t com[128];
1222 int i_com;
1223
1224 /* comment */
1225 com[0] = PACKET_TYPE_COMMENT;
1226 i_com = snprintf( (char *)(com+1), 127,
1227 PACKAGE_VERSION" stream output" )
1228 + 1;
1229 op.packet = com;
1230 op.bytes = i_com;
1231 op.b_o_s = 0;
1232 op.e_o_s = 0;
1233 op.granulepos = 0;
1234 op.packetno = p_stream->i_packet_no++;
1235 ogg_stream_packetin( &p_stream->os, &op );
1236 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1237 block_ChainAppend( &p_hdr, p_og );
1238 }
1239
1240 /* Special case for mp4v and flac */
1241 if( ( p_stream->i_fourcc == VLC_CODEC_MP4V ||
1242 p_stream->i_fourcc == VLC_CODEC_FLAC ) &&
1243 p_input->p_fmt->i_extra )
1244 {
1245 /* Send a packet with the VOL data for mp4v
1246 * or STREAMINFO for flac */
1247 msg_Dbg( p_mux, "writing extra data" );
1248 op.bytes = p_input->p_fmt->i_extra;
1249 op.packet = p_input->p_fmt->p_extra;
1250 uint8_t flac_streaminfo[34 + 4];
1251 if( p_stream->i_fourcc == VLC_CODEC_FLAC )
1252 {
1253 if (op.bytes == 42 && !memcmp(op.packet, "fLaC", 4)) {
1254 op.bytes -= 4;
1255 memcpy(flac_streaminfo, op.packet + 4, 38);
1256 op.packet = flac_streaminfo;
1257 } else if (op.bytes == 34) {
1258 op.bytes += 4;
1259 memcpy(flac_streaminfo + 4, op.packet, 34);
1260 flac_streaminfo[0] = 0x80; /* last block, streaminfo */
1261 flac_streaminfo[1] = 0;
1262 flac_streaminfo[2] = 0;
1263 flac_streaminfo[3] = 34; /* block size */
1264 op.packet = flac_streaminfo;
1265 } else {
1266 msg_Err(p_mux, "Invalid FLAC streaminfo (%ld bytes)",
1267 op.bytes);
1268 }
1269 }
1270 op.b_o_s = 0;
1271 op.e_o_s = 0;
1272 op.granulepos = 0;
1273 op.packetno = p_stream->i_packet_no++;
1274 ogg_stream_packetin( &p_stream->os, &op );
1275 p_og = OggStreamFlush( p_mux, &p_stream->os, 0 );
1276 block_ChainAppend( &p_hdr, p_og );
1277 }
1278 }
1279
1280 if ( p_sys->skeleton.b_create )
1281 {
1282 msg_Dbg( p_mux, "ending skeleton" );
1283 op.packet = NULL;
1284 op.bytes = 0;
1285 op.b_o_s = 0;
1286 op.e_o_s = 1;
1287 op.granulepos = 0;
1288 op.packetno = p_sys->skeleton.i_packet_no++;
1289 ogg_stream_packetin( &p_sys->skeleton.os, &op );
1290 p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
1291 block_ChainAppend( &p_hdr, p_og );
1292 }
1293
1294 /* set HEADER flag */
1295 /* flag headers to be resent for streaming clients */
1296 for( p_og = p_hdr; p_og != NULL; p_og = p_og->p_next )
1297 {
1298 p_og->i_flags |= BLOCK_FLAG_HEADER;
1299 }
1300
1301 /* Write previous headers */
1302 p_mux->p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_hdr );
1303
1304 return true;
1305 }
1306
1307 static void OggCreateStreamFooter( sout_mux_t *p_mux, ogg_stream_t *p_stream )
1308 {
1309 block_t *p_og;
1310 ogg_packet op;
1311 sout_mux_sys_t *p_sys = p_mux->p_sys;
1312
1313 /* as stream is finished, overwrite the index, if there was any */
1314 if ( p_sys->skeleton.b_create && p_stream->skeleton.p_index
1315 && p_stream->skeleton.i_index_payload )
1316 {
1317 sout_AccessOutSeek( p_mux->p_access, p_stream->skeleton.i_index_offset );
1318 OggGetSkeletonIndex( &op.packet, &op.bytes, p_stream );
1319 if ( op.packet != NULL )
1320 {
1321 msg_Dbg(p_mux, "Rewriting index at %"PRId64, p_stream->skeleton.i_index_offset );
1322 ogg_stream_reset_serialno( &p_sys->skeleton.os, p_sys->skeleton.i_serial_no );
1323 op.b_o_s = 0;
1324 op.e_o_s = 0;
1325 op.granulepos = 0;
1326 op.packetno = p_stream->skeleton.i_index_packetno + 1;
1327 /* fake our stream state */
1328 p_sys->skeleton.os.pageno = p_stream->skeleton.i_index_pageno;
1329 p_sys->skeleton.os.packetno = p_stream->skeleton.i_index_packetno;
1330 p_sys->skeleton.os.granulepos = 0;
1331 p_sys->skeleton.os.b_o_s = 1;
1332 p_sys->skeleton.os.e_o_s = 0;
1333 ogg_stream_packetin( &p_sys->skeleton.os, &op );
1334 p_og = OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 );
1335 sout_AccessOutWrite( p_mux->p_access, p_og );
1336 }
1337 sout_AccessOutSeek( p_mux->p_access, p_sys->i_pos );
1338 }
1339
1340 /* clear skeleton */
1341 p_stream->skeleton.b_fisbone_done = false;
1342 p_stream->skeleton.b_index_done = false;
1343 p_stream->skeleton.i_index_offset = 0;
1344 p_stream->skeleton.i_index_payload = 0;
1345 p_stream->skeleton.i_last_keyframe_pos = 0;
1346 p_stream->skeleton.i_last_keyframe_time = 0;
1347 /* clear accounting */
1348 p_stream->i_num_frames = 0;
1349 p_stream->i_num_keyframes = 0;
1350
1351 /* Write eos packet for stream. */
1352 op.packet = NULL;
1353 op.bytes = 0;
1354 op.b_o_s = 0;
1355 op.e_o_s = 1;
1356 op.granulepos = p_stream->u_last_granulepos;
1357 op.packetno = p_stream->i_packet_no++;
1358 ogg_stream_packetin( &p_stream->os, &op );
1359
1360 /* flush it with all remaining data */
1361 if( ( p_og = OggStreamFlush( p_mux, &p_stream->os, 0 ) ) )
1362 {
1363 /* Write footer */
1364 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1365 p_mux->p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
1366 }
1367
1368 ogg_stream_clear( &p_stream->os );
1369 }
1370
1371 static void OggSetDate( block_t *p_og, mtime_t i_dts, mtime_t i_length )
1372 {
1373 int i_count;
1374 block_t *p_tmp;
1375 mtime_t i_delta;
1376
1377 for( p_tmp = p_og, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->p_next )
1378 {
1379 i_count++;
1380 }
1381
1382 if( i_count == 0 ) return; /* ignore. */
1383
1384 i_delta = i_length / i_count;
1385
1386 for( p_tmp = p_og; p_tmp != NULL; p_tmp = p_tmp->p_next )
1387 {
1388 p_tmp->i_dts = i_dts;
1389 p_tmp->i_length = i_delta;
1390
1391 i_dts += i_delta;
1392 }
1393 }
1394
1395 static void OggRewriteFisheadPage( sout_mux_t *p_mux )
1396 {
1397 sout_mux_sys_t *p_sys = p_mux->p_sys;
1398 ogg_packet op;
1399 op.bytes = 80;
1400 op.packet = calloc( 1, op.bytes );
1401 if ( op.packet != NULL )
1402 {
1403 op.b_o_s = 1;
1404 op.e_o_s = 0;
1405 op.granulepos = 0;
1406 op.packetno = 0;
1407 ogg_stream_reset_serialno( &p_sys->skeleton.os, p_sys->skeleton.i_serial_no );
1408 OggFillSkeletonFishead( op.packet, p_mux );
1409 ogg_stream_packetin( &p_sys->skeleton.os, &op );
1410 msg_Dbg( p_mux, "rewriting fishead at %"PRId64, p_mux->p_sys->skeleton.i_fishead_offset );
1411 sout_AccessOutSeek( p_mux->p_access, p_mux->p_sys->skeleton.i_fishead_offset );
1412 sout_AccessOutWrite( p_mux->p_access,
1413 OggStreamFlush( p_mux, &p_sys->skeleton.os, 0 ) );
1414 sout_AccessOutSeek( p_mux->p_access, p_mux->p_sys->i_pos );
1415 }
1416 }
1417
1418 static bool AllocateIndex( sout_mux_t *p_mux, sout_input_t *p_input )
1419 {
1420 ogg_stream_t *p_stream = (ogg_stream_t *) p_input->p_sys;
1421 size_t i_size;
1422
1423 if ( p_stream->i_length )
1424 {
1425 uint64_t i_interval = (uint64_t)p_mux->p_sys->skeleton.i_index_intvl * 1000;
1426 uint64_t i;
1427
1428 if( p_input->p_fmt->i_cat == VIDEO_ES &&
1429 p_input->p_fmt->video.i_frame_rate )
1430 {
1431 /* optimize for fps < 1 */
1432 i_interval= __MAX( p_mux->p_sys->skeleton.i_index_intvl * 1000,
1433 INT64_C(10000000) *
1434 p_input->p_fmt->video.i_frame_rate_base /
1435 p_input->p_fmt->video.i_frame_rate );
1436 }
1437
1438 size_t i_tuple_size = 0;
1439 /* estimate length of pos value */
1440 if ( p_input->p_fmt->i_bitrate )
1441 {
1442 i = i_interval * p_input->p_fmt->i_bitrate / 1000000;
1443 while ( i <<= 1 ) i_tuple_size++;
1444 }
1445 else
1446 {
1447 /* Likely 64KB<<keyframe interval<<16MB */
1448 /* We can't really guess due to muxing */
1449 i_tuple_size = 24 / 8;
1450 }
1451
1452 /* add length of interval value */
1453 i = i_interval;
1454 while ( i <<= 1 ) i_tuple_size++;
1455
1456 i_size = i_tuple_size * ( p_stream->i_length / i_interval + 2 );
1457 }
1458 else
1459 {
1460 i_size = ( INT64_C(3600) * 11.2 * 1000 / p_mux->p_sys->skeleton.i_index_intvl )
1461 * p_mux->p_sys->skeleton.i_index_ratio;
1462 msg_Dbg( p_mux, "No stream length, using default allocation for index" );
1463 }
1464 i_size *= ( 8.0 / 7 ); /* 7bits encoding overhead */
1465 msg_Dbg( p_mux, "allocating %zu bytes for index", i_size );
1466 p_stream->skeleton.p_index = calloc( i_size, sizeof(uint8_t) );
1467 if ( !p_stream->skeleton.p_index ) return false;
1468 p_stream->skeleton.i_index_size = i_size;
1469 p_stream->skeleton.i_index_payload = 0;
1470 return true;
1471 }
1472
1473 /*****************************************************************************
1474 * Mux: multiplex available data in input fifos into the Ogg bitstream
1475 *****************************************************************************/
1476 static int Mux( sout_mux_t *p_mux )
1477 {
1478 sout_mux_sys_t *p_sys = p_mux->p_sys;
1479 mtime_t i_dts;
1480
1481 /* End any stream that ends in that group */
1482 if ( p_sys->i_del_streams )
1483 {
1484 /* Remove deleted logical streams */
1485 for( int i = 0; i < p_sys->i_del_streams; i++ )
1486 {
1487 OggCreateStreamFooter( p_mux, p_sys->pp_del_streams[i] );
1488 FREENULL( p_sys->pp_del_streams[i]->p_oggds_header );
1489 FREENULL( p_sys->pp_del_streams[i] );
1490 }
1491 FREENULL( p_sys->pp_del_streams );
1492 p_sys->i_del_streams = 0;
1493 }
1494
1495 if ( p_sys->i_streams == 0 )
1496 {
1497 /* All streams have been deleted, or none have ever been created
1498 From this point, we are allowed to start a new group of logical streams */
1499 p_sys->skeleton.b_head_done = false;
1500 p_sys->b_can_add_streams = true;
1501 p_sys->i_segment_start = p_sys->i_pos;
1502 }
1503
1504 if ( p_sys->i_add_streams )
1505 {
1506 if ( !p_sys->b_can_add_streams )
1507 {
1508 msg_Warn( p_mux, "Can't add new stream %d/%d: Considerer increasing sout-mux-caching variable", p_sys->i_del_streams, p_mux->p_sys->i_streams);
1509 msg_Warn( p_mux, "Resetting and setting new identity to current streams");
1510
1511 /* resetting all active streams */
1512 for ( int i=0; i < p_mux->p_sys->i_streams; i++ )
1513 {
1514 ogg_stream_t * p_stream = (ogg_stream_t *) p_mux->pp_inputs[i]->p_sys;
1515 if ( p_stream->b_finished || !p_stream->b_started ) continue;
1516 OggCreateStreamFooter( p_mux, p_stream );
1517 p_stream->i_serial_no = p_sys->i_next_serial_no++;
1518 p_stream->i_packet_no = 0;
1519 p_stream->b_finished = true;
1520 }
1521
1522 /* rewrite fishead with final values */
1523 if ( p_sys->skeleton.b_head_done )
1524 {
1525 OggRewriteFisheadPage( p_mux );
1526 }
1527
1528 p_sys->b_can_add_streams = true;
1529 p_sys->skeleton.b_head_done = false;
1530 p_sys->i_segment_start = p_sys->i_pos;
1531 }
1532
1533 /* Open new ogg stream */
1534 if( sout_MuxGetStream( p_mux, 1, &i_dts) < 0 )
1535 {
1536 msg_Dbg( p_mux, "waiting for data..." );
1537 return VLC_SUCCESS;
1538 }
1539 msg_Dbg( p_mux, "writing streams headers" );
1540 p_sys->i_start_dts = i_dts;
1541 p_sys->i_streams = p_mux->i_nb_inputs;
1542 p_sys->i_del_streams = 0;
1543 p_sys->i_add_streams = 0;
1544 p_sys->skeleton.b_create = true;
1545
1546 if ( ! OggCreateHeaders( p_mux ) )
1547 return VLC_ENOMEM;
1548
1549 /* If we're switching to end of headers, then that's data start */
1550 if ( p_sys->b_can_add_streams )
1551 {
1552 msg_Dbg( p_mux, "data starts from %zu", p_sys->i_pos );
1553 p_sys->i_data_start = p_sys->i_pos;
1554 }
1555
1556 /* Since we started sending secondaryheader or data pages,
1557 * we're no longer allowed to create new streams, until all streams end */
1558 p_sys->b_can_add_streams = false;
1559 }
1560
1561 /* Do the regular data mux thing */
1562 for( ;; )
1563 {
1564 int i_stream = sout_MuxGetStream( p_mux, 1, NULL );
1565 if( i_stream < 0 )
1566 return VLC_SUCCESS;
1567 MuxBlock( p_mux, p_mux->pp_inputs[i_stream] );
1568 }
1569
1570 return VLC_SUCCESS;
1571 }
1572
1573 static int MuxBlock( sout_mux_t *p_mux, sout_input_t *p_input )
1574 {
1575 sout_mux_sys_t *p_sys = p_mux->p_sys;
1576 ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
1577 block_t *p_data = block_FifoGet( p_input->p_fifo );
1578 block_t *p_og = NULL;
1579 ogg_packet op;
1580 uint64_t i_time;
1581
1582 if( p_stream->i_fourcc != VLC_CODEC_VORBIS &&
1583 p_stream->i_fourcc != VLC_CODEC_FLAC &&
1584 p_stream->i_fourcc != VLC_CODEC_SPEEX &&
1585 p_stream->i_fourcc != VLC_CODEC_OPUS &&
1586 p_stream->i_fourcc != VLC_CODEC_THEORA &&
1587 p_stream->i_fourcc != VLC_CODEC_DAALA &&
1588 p_stream->i_fourcc != VLC_CODEC_VP8 &&
1589 p_stream->i_fourcc != VLC_CODEC_DIRAC )
1590 {
1591 p_data = block_Realloc( p_data, 1, p_data->i_buffer );
1592 p_data->p_buffer[0] = PACKET_IS_SYNCPOINT; // FIXME
1593 }
1594
1595 if ( p_stream->i_fourcc == VLC_CODEC_DIRAC && p_stream->i_baseptsdelay < 0 )
1596 p_stream->i_baseptsdelay = p_data->i_pts - p_data->i_dts;
1597
1598 op.packet = p_data->p_buffer;
1599 op.bytes = p_data->i_buffer;
1600 op.b_o_s = 0;
1601 op.e_o_s = 0;
1602 op.packetno = p_stream->i_packet_no++;
1603 op.granulepos = -1;
1604
1605 if( p_stream->i_cat == AUDIO_ES )
1606 {
1607 if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
1608 p_stream->i_fourcc == VLC_CODEC_FLAC ||
1609 p_stream->i_fourcc == VLC_CODEC_OPUS ||
1610 p_stream->i_fourcc == VLC_CODEC_SPEEX )
1611 {
1612 /* number of sample from begining + current packet */
1613 op.granulepos =
1614 ( p_data->i_dts - p_sys->i_start_dts + p_data->i_length ) *
1615 (mtime_t)p_input->p_fmt->audio.i_rate / CLOCK_FREQ;
1616
1617 i_time = p_data->i_dts - p_sys->i_start_dts;
1618 AddIndexEntry( p_mux, i_time, p_input );
1619 }
1620 else if( p_stream->p_oggds_header )
1621 {
1622 /* number of sample from begining */
1623 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) *
1624 p_stream->p_oggds_header->i_samples_per_unit / CLOCK_FREQ;
1625 }
1626 }
1627 else if( p_stream->i_cat == VIDEO_ES )
1628 {
1629 if( p_stream->i_fourcc == VLC_CODEC_THEORA ||
1630 p_stream->i_fourcc == VLC_CODEC_DAALA )
1631 {
1632 p_stream->i_num_frames++;
1633 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1634 {
1635 p_stream->i_num_keyframes++;
1636 p_stream->i_last_keyframe = p_stream->i_num_frames;
1637
1638 /* presentation time */
1639 i_time = CLOCK_FREQ * ( p_stream->i_num_frames - 1 ) *
1640 p_input->p_fmt->video.i_frame_rate_base / p_input->p_fmt->video.i_frame_rate;
1641 AddIndexEntry( p_mux, i_time, p_input );
1642 }
1643
1644 op.granulepos = (p_stream->i_last_keyframe << p_stream->i_keyframe_granule_shift )
1645 | (p_stream->i_num_frames-p_stream->i_last_keyframe);
1646 }
1647 else if( p_stream->i_fourcc == VLC_CODEC_DIRAC )
1648 {
1649
1650 #define FRAME_ROUND(a) \
1651 if ( ( a + 5000 / CLOCK_FREQ ) > ( a / CLOCK_FREQ ) )\
1652 a += 5000;\
1653 a /= CLOCK_FREQ;
1654
1655 mtime_t dt = (p_data->i_dts - p_sys->i_start_dts) * p_input->p_fmt->video.i_frame_rate / p_input->p_fmt->video.i_frame_rate_base;
1656 FRAME_ROUND( dt );
1657
1658 mtime_t pt = (p_data->i_pts - p_sys->i_start_dts - p_stream->i_baseptsdelay ) * p_input->p_fmt->video.i_frame_rate / p_input->p_fmt->video.i_frame_rate_base;
1659 FRAME_ROUND( pt );
1660
1661 /* (shro) some PTS could be repeated within 1st frames */
1662 if ( pt == p_stream->i_dirac_last_pt )
1663 pt++;
1664 else
1665 p_stream->i_dirac_last_pt = pt;
1666
1667 /* (shro) some DTS could be repeated within 1st frames */
1668 if ( dt == p_stream->i_dirac_last_dt )
1669 dt++;
1670 else
1671 p_stream->i_dirac_last_dt = dt;
1672
1673 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1674 p_stream->i_last_keyframe = dt;
1675 mtime_t dist = dt - p_stream->i_last_keyframe;
1676
1677 /* Everything increments by two for progressive */
1678 if ( true )
1679 {
1680 pt *=2;
1681 dt *=2;
1682 }
1683
1684 mtime_t delay = pt - dt;
1685 if ( delay < 0 ) delay *= -1;
1686
1687 op.granulepos = (pt - delay) << 31 | (dist&0xff00) << 14
1688 | (delay&0x1fff) << 9 | (dist&0xff);
1689 #ifndef NDEBUG
1690 msg_Dbg( p_mux, "dts %"PRId64" pts %"PRId64" dt %"PRId64" pt %"PRId64" delay %"PRId64" granule %"PRId64,
1691 (p_data->i_dts - p_sys->i_start_dts),
1692 (p_data->i_pts - p_sys->i_start_dts ),
1693 dt, pt, delay, op.granulepos );
1694 #endif
1695
1696 AddIndexEntry( p_mux, dt, p_input );
1697 }
1698 else if( p_stream->i_fourcc == VLC_CODEC_VP8 )
1699 {
1700 p_stream->i_num_frames++;
1701 if( p_data->i_flags & BLOCK_FLAG_TYPE_I )
1702 {
1703 p_stream->i_num_keyframes++;
1704 p_stream->i_last_keyframe = p_stream->i_num_frames;
1705
1706 /* presentation time */
1707 i_time = CLOCK_FREQ * ( p_stream->i_num_frames - 1 ) *
1708 p_input->p_fmt->video.i_frame_rate_base / p_input->p_fmt->video.i_frame_rate;
1709 AddIndexEntry( p_mux, i_time, p_input );
1710 }
1711 op.granulepos = ( ((int64_t)p_stream->i_num_frames) << 32 ) |
1712 ( ( ( p_stream->i_num_frames - p_stream->i_last_keyframe ) & 0x07FFFFFF ) << 3 );
1713 }
1714 else if( p_stream->p_oggds_header )
1715 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) * INT64_C(10) /
1716 p_stream->p_oggds_header->i_time_unit;
1717 }
1718 else if( p_stream->i_cat == SPU_ES )
1719 {
1720 /* granulepos is in millisec */
1721 op.granulepos = ( p_data->i_dts - p_sys->i_start_dts ) / 1000;
1722 }
1723 else
1724 return VLC_EGENERIC;
1725
1726 p_stream->u_last_granulepos = op.granulepos;
1727 ogg_stream_packetin( &p_stream->os, &op );
1728
1729 if( p_stream->i_cat == SPU_ES ||
1730 p_stream->i_fourcc == VLC_CODEC_SPEEX ||
1731 p_stream->i_fourcc == VLC_CODEC_DIRAC )
1732 {
1733 /* Subtitles or Speex packets are quite small so they
1734 * need to be flushed to be sent on time */
1735 /* The OggDirac mapping suggests ever so strongly that a
1736 * page flush occurs after each OggDirac packet, so to make
1737 * the timestamps unambiguous */
1738 p_og = OggStreamFlush( p_mux, &p_stream->os, p_data->i_dts );
1739 }
1740 else
1741 {
1742 p_og = OggStreamPageOut( p_mux, &p_stream->os, p_data->i_dts );
1743 }
1744
1745 if( p_og )
1746 {
1747 OggSetDate( p_og, p_stream->i_dts, p_stream->i_length );
1748 p_stream->i_dts = -1;
1749 p_stream->i_length = 0;
1750 p_mux->p_sys->i_pos += sout_AccessOutWrite( p_mux->p_access, p_og );
1751 }
1752 else
1753 {
1754 if( p_stream->i_dts < 0 )
1755 {
1756 p_stream->i_dts = p_data->i_dts;
1757 }
1758 p_stream->i_length += p_data->i_length;
1759 }
1760
1761 block_Release( p_data );
1762 return VLC_SUCCESS;
1763 }
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