1 /*****************************************************************************
2 * ogg.c : ogg stream demux module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2007 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
8 * Andre Pang <Andre.Pang@csiro.au> (Annodex support)
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 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_demux.h>
36 #include <vlc_input.h>
40 #include <vlc_codecs.h>
44 #include "kate_categories.h"
46 /*****************************************************************************
48 *****************************************************************************/
49 static int Open ( vlc_object_t * );
50 static void Close( vlc_object_t * );
53 set_shortname ( "OGG" )
54 set_description( N_("OGG demuxer" ) )
55 set_category( CAT_INPUT )
56 set_subcategory( SUBCAT_INPUT_DEMUX )
57 set_capability( "demux", 50 )
58 set_callbacks( Open, Close )
63 /*****************************************************************************
64 * Definitions of structures and functions used by this plugins
65 *****************************************************************************/
66 typedef struct logical_stream_s
68 ogg_stream_state os; /* logical stream of packets */
71 es_format_t fmt_old; /* format of old ES is reused */
77 /* the header of some logical streams (eg vorbis) contain essential
78 * data for the decoder. We back them up here in case we need to re-feed
79 * them to the decoder. */
85 /* program clock reference (in units of 90kHz) derived from the previous
88 mtime_t i_interpolated_pcr;
89 mtime_t i_previous_pcr;
95 /* kate streams have the number of headers in the ID header */
96 int i_kate_num_headers;
98 /* for Annodex logical bitstreams */
99 int i_secondary_header_packets;
105 ogg_sync_state oy; /* sync and verify incoming physical bitstream */
107 int i_streams; /* number of logical bitstreams */
108 logical_stream_t **pp_stream; /* pointer to an array of logical streams */
110 logical_stream_t *p_old_stream; /* pointer to a old logical stream to avoid recreating it */
112 /* program clock reference (in units of 90kHz) derived from the pcr of
123 /* after reading all headers, the first data page is stuffed into the relevant stream, ready to use */
130 /* OggDS headers for the new header format (used in ogm files) */
135 } stream_header_video_t;
139 ogg_int16_t channels;
141 ogg_int16_t blockalign;
142 ogg_int32_t avgbytespersec;
143 } stream_header_audio_t;
150 ogg_int32_t size; /* size of the structure */
152 ogg_int64_t time_unit; /* in reference time */
153 ogg_int64_t samples_per_unit;
154 ogg_int32_t default_len; /* in media time */
156 ogg_int32_t buffersize;
157 ogg_int16_t bits_per_sample;
163 stream_header_video_t video;
165 stream_header_audio_t audio;
169 #define OGG_BLOCK_SIZE 4096
171 /* Some defines from OggDS */
172 #define PACKET_TYPE_HEADER 0x01
173 #define PACKET_TYPE_BITS 0x07
174 #define PACKET_LEN_BITS01 0xc0
175 #define PACKET_LEN_BITS2 0x02
176 #define PACKET_IS_SYNCPOINT 0x08
178 /*****************************************************************************
180 *****************************************************************************/
181 static int Demux ( demux_t * );
182 static int Control( demux_t *, int, va_list );
184 /* Bitstream manipulation */
185 static int Ogg_ReadPage ( demux_t *, ogg_page * );
186 static void Ogg_UpdatePCR ( logical_stream_t *, ogg_packet * );
187 static void Ogg_DecodePacket ( demux_t *, logical_stream_t *, ogg_packet * );
189 static int Ogg_BeginningOfStream( demux_t *p_demux );
190 static int Ogg_FindLogicalStreams( demux_t *p_demux );
191 static void Ogg_EndOfStream( demux_t *p_demux );
194 static void Ogg_LogicalStreamDelete( demux_t *p_demux, logical_stream_t *p_stream );
195 static bool Ogg_LogicalStreamResetEsFormat( demux_t *p_demux, logical_stream_t *p_stream );
198 static void Ogg_ExtractMeta( demux_t *p_demux, vlc_fourcc_t i_codec, const uint8_t *p_headers, int i_headers );
200 /* Logical bitstream headers */
201 static void Ogg_ReadTheoraHeader( logical_stream_t *, ogg_packet * );
202 static void Ogg_ReadVorbisHeader( logical_stream_t *, ogg_packet * );
203 static void Ogg_ReadSpeexHeader( logical_stream_t *, ogg_packet * );
204 static void Ogg_ReadKateHeader( logical_stream_t *, ogg_packet * );
205 static void Ogg_ReadFlacHeader( demux_t *, logical_stream_t *, ogg_packet * );
206 static void Ogg_ReadAnnodexHeader( vlc_object_t *, logical_stream_t *, ogg_packet * );
207 static bool Ogg_ReadDiracHeader( logical_stream_t *, ogg_packet * );
209 /*****************************************************************************
210 * Open: initializes ogg demux structures
211 *****************************************************************************/
212 static int Open( vlc_object_t * p_this )
214 demux_t *p_demux = (demux_t *)p_this;
216 const uint8_t *p_peek;
219 /* Check if we are dealing with an ogg stream */
220 if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 ) return VLC_EGENERIC;
221 if( !p_demux->b_force && memcmp( p_peek, "OggS", 4 ) )
226 /* Set exported functions */
227 p_demux->pf_demux = Demux;
228 p_demux->pf_control = Control;
229 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
233 memset( p_sys, 0, sizeof( demux_sys_t ) );
234 p_sys->i_bitrate = 0;
235 p_sys->pp_stream = NULL;
236 p_sys->p_old_stream = NULL;
238 /* Begnning of stream, tell the demux to look for elementary streams. */
242 /* Initialize the Ogg physical bitstream parser */
243 ogg_sync_init( &p_sys->oy );
244 p_sys->b_page_waiting = false;
247 p_sys->p_meta = NULL;
252 /*****************************************************************************
253 * Close: frees unused data
254 *****************************************************************************/
255 static void Close( vlc_object_t *p_this )
257 demux_t *p_demux = (demux_t *)p_this;
258 demux_sys_t *p_sys = p_demux->p_sys ;
260 /* Cleanup the bitstream parser */
261 ogg_sync_clear( &p_sys->oy );
263 Ogg_EndOfStream( p_demux );
265 if( p_sys->p_old_stream )
266 Ogg_LogicalStreamDelete( p_demux, p_sys->p_old_stream );
271 /*****************************************************************************
272 * Demux: reads and demuxes data packets
273 *****************************************************************************
274 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
275 *****************************************************************************/
276 static int Demux( demux_t * p_demux )
278 demux_sys_t *p_sys = p_demux->p_sys;
280 ogg_packet oggpacket;
284 if( p_sys->i_eos == p_sys->i_streams )
288 msg_Dbg( p_demux, "end of a group of logical streams" );
289 /* We keep the ES to try reusing it in Ogg_BeginningOfStream
290 * only 1 ES is supported (common case for ogg web radio) */
291 if( p_sys->i_streams == 1 )
293 p_sys->p_old_stream = p_sys->pp_stream[0];
294 TAB_CLEAN( p_sys->i_streams, p_sys->pp_stream );
296 Ogg_EndOfStream( p_demux );
300 if( Ogg_BeginningOfStream( p_demux ) != VLC_SUCCESS )
303 msg_Dbg( p_demux, "beginning of a group of logical streams" );
304 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
308 * The first data page of a physical stream is stored in the relevant logical stream
309 * in Ogg_FindLogicalStreams. Therefore, we must not read a page and only update the
310 * stream it belongs to if we haven't processed this first page yet. If we do, we
311 * will only process that first page whenever we find the second page for this stream.
312 * While this is fine for Vorbis and Theora, which are continuous codecs, which means
313 * the second page will arrive real quick, this is not fine for Kate, whose second
314 * data page will typically arrive much later.
315 * This means it is now possible to seek right at the start of a stream where the last
316 * logical stream is Kate, without having to wait for the second data page to unblock
317 * the first one, which is the one that triggers the 'no more headers to backup' code.
318 * And, as we all know, seeking without having backed up all headers is bad, since the
319 * codec will fail to initialize if it's missing its headers.
321 if( !p_sys->b_page_waiting)
324 * Demux an ogg page from the stream
326 if( Ogg_ReadPage( p_demux, &oggpage ) != VLC_SUCCESS )
329 /* Test for End of Stream */
330 if( ogg_page_eos( &oggpage ) )
335 for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
337 logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
339 /* if we've just pulled page, look for the right logical stream */
340 if( !p_sys->b_page_waiting )
342 if( p_sys->i_streams == 1 &&
343 ogg_page_serialno( &oggpage ) != p_stream->os.serialno )
345 msg_Err( p_demux, "Broken Ogg stream (serialno) mismatch" );
346 ogg_stream_reset_serialno( &p_stream->os, ogg_page_serialno( &oggpage ) );
348 p_stream->b_reinit = true;
349 p_stream->i_pcr = -1;
350 p_stream->i_interpolated_pcr = -1;
351 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
354 if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
358 while( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
360 /* Read info from any secondary header packets, if there are any */
361 if( p_stream->i_secondary_header_packets > 0 )
363 if( p_stream->fmt.i_codec == VLC_CODEC_THEORA &&
364 oggpacket.bytes >= 7 &&
365 ! memcmp( oggpacket.packet, "\x80theora", 7 ) )
367 Ogg_ReadTheoraHeader( p_stream, &oggpacket );
368 p_stream->i_secondary_header_packets = 0;
370 else if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS &&
371 oggpacket.bytes >= 7 &&
372 ! memcmp( oggpacket.packet, "\x01vorbis", 7 ) )
374 Ogg_ReadVorbisHeader( p_stream, &oggpacket );
375 p_stream->i_secondary_header_packets = 0;
377 else if( p_stream->fmt.i_codec == VLC_CODEC_CMML )
379 p_stream->i_secondary_header_packets = 0;
383 if( p_stream->b_reinit )
385 /* If synchro is re-initialized we need to drop all the packets
386 * until we find a new dated one. */
387 Ogg_UpdatePCR( p_stream, &oggpacket );
389 if( p_stream->i_pcr >= 0 )
391 p_stream->b_reinit = false;
395 p_stream->i_interpolated_pcr = -1;
399 /* An Ogg/vorbis packet contains an end date granulepos */
400 if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS ||
401 p_stream->fmt.i_codec == VLC_CODEC_SPEEX ||
402 p_stream->fmt.i_codec == VLC_CODEC_FLAC )
404 if( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
406 Ogg_DecodePacket( p_demux, p_stream, &oggpacket );
410 es_out_Control( p_demux->out, ES_OUT_SET_PCR,
411 VLC_TS_0 + p_stream->i_pcr );
417 Ogg_DecodePacket( p_demux, p_stream, &oggpacket );
420 if( !p_sys->b_page_waiting )
424 /* if a page was waiting, it's now processed */
425 p_sys->b_page_waiting = false;
428 for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
430 logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
432 if( p_stream->fmt.i_cat == SPU_ES )
434 if( p_stream->i_interpolated_pcr < 0 )
437 if( p_sys->i_pcr < 0 || p_stream->i_interpolated_pcr < p_sys->i_pcr )
438 p_sys->i_pcr = p_stream->i_interpolated_pcr;
441 if( p_sys->i_pcr >= 0 )
442 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
447 /*****************************************************************************
449 *****************************************************************************/
450 static int Control( demux_t *p_demux, int i_query, va_list args )
452 demux_sys_t *p_sys = p_demux->p_sys;
461 p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t* );
463 vlc_meta_Merge( p_meta, p_sys->p_meta );
466 case DEMUX_HAS_UNSUPPORTED_META:
467 pb_bool = (bool*)va_arg( args, bool* );
472 pi64 = (int64_t*)va_arg( args, int64_t * );
473 *pi64 = p_sys->i_pcr;
479 case DEMUX_SET_POSITION:
480 /* forbid seeking if we haven't initialized all logical bitstreams yet;
481 if we allowed, some headers would not get backed up and decoder init
482 would fail, making that logical stream unusable */
483 if( p_sys->i_bos > 0 )
488 for( i = 0; i < p_sys->i_streams; i++ )
490 logical_stream_t *p_stream = p_sys->pp_stream[i];
492 /* we'll trash all the data until we find the next pcr */
493 p_stream->b_reinit = true;
494 p_stream->i_pcr = -1;
495 p_stream->i_interpolated_pcr = -1;
496 ogg_stream_reset( &p_stream->os );
498 ogg_sync_reset( &p_sys->oy );
499 /* XXX The break/return is missing on purpose as
500 * demux_vaControlHelper will do the last part of the job */
503 return demux_vaControlHelper( p_demux->s, 0, -1, p_sys->i_bitrate,
508 /****************************************************************************
509 * Ogg_ReadPage: Read a full Ogg page from the physical bitstream.
510 ****************************************************************************
511 * Returns VLC_SUCCESS if a page has been read. An error might happen if we
512 * are at the end of stream.
513 ****************************************************************************/
514 static int Ogg_ReadPage( demux_t *p_demux, ogg_page *p_oggpage )
516 demux_sys_t *p_ogg = p_demux->p_sys ;
520 while( ogg_sync_pageout( &p_ogg->oy, p_oggpage ) != 1 )
522 p_buffer = ogg_sync_buffer( &p_ogg->oy, OGG_BLOCK_SIZE );
524 i_read = stream_Read( p_demux->s, p_buffer, OGG_BLOCK_SIZE );
528 ogg_sync_wrote( &p_ogg->oy, i_read );
534 /****************************************************************************
535 * Ogg_UpdatePCR: update the PCR (90kHz program clock reference) for the
537 ****************************************************************************/
538 static void Ogg_UpdatePCR( logical_stream_t *p_stream,
539 ogg_packet *p_oggpacket )
541 /* Convert the granulepos into a pcr */
542 if( p_oggpacket->granulepos >= 0 )
544 if( p_stream->fmt.i_codec == VLC_CODEC_THEORA ||
545 p_stream->fmt.i_codec == VLC_CODEC_KATE )
547 ogg_int64_t iframe = p_oggpacket->granulepos >>
548 p_stream->i_granule_shift;
549 ogg_int64_t pframe = p_oggpacket->granulepos -
550 ( iframe << p_stream->i_granule_shift );
552 p_stream->i_pcr = ( iframe + pframe ) * INT64_C(1000000)
555 else if( p_stream->fmt.i_codec == VLC_CODEC_DIRAC )
557 ogg_int64_t i_dts = p_oggpacket->granulepos >> 31;
558 /* NB, OggDirac granulepos values are in units of 2*picturerate */
559 p_stream->i_pcr = (i_dts/2) * INT64_C(1000000) / p_stream->f_rate;
563 p_stream->i_pcr = p_oggpacket->granulepos * INT64_C(1000000)
567 p_stream->i_pcr += 1;
568 p_stream->i_interpolated_pcr = p_stream->i_pcr;
572 p_stream->i_pcr = -1;
574 /* no granulepos available, try to interpolate the pcr.
575 * If we can't then don't touch the old value. */
576 if( p_stream->fmt.i_cat == VIDEO_ES )
577 /* 1 frame per packet */
578 p_stream->i_interpolated_pcr += (INT64_C(1000000) / p_stream->f_rate);
579 else if( p_stream->fmt.i_bitrate )
580 p_stream->i_interpolated_pcr +=
581 ( p_oggpacket->bytes * INT64_C(1000000) /
582 p_stream->fmt.i_bitrate / 8 );
586 /****************************************************************************
587 * Ogg_DecodePacket: Decode an Ogg packet.
588 ****************************************************************************/
589 static void Ogg_DecodePacket( demux_t *p_demux,
590 logical_stream_t *p_stream,
591 ogg_packet *p_oggpacket )
595 int i_header_len = 0;
596 mtime_t i_pts = -1, i_interpolated_pts;
597 demux_sys_t *p_ogg = p_demux->p_sys;
600 if( !p_oggpacket->bytes )
602 msg_Dbg( p_demux, "discarding 0 sized packet" );
606 if( p_oggpacket->bytes >= 7 &&
607 ! memcmp ( p_oggpacket->packet, "Annodex", 7 ) )
609 /* it's an Annodex packet -- skip it (do nothing) */
612 else if( p_oggpacket->bytes >= 7 &&
613 ! memcmp ( p_oggpacket->packet, "AnxData", 7 ) )
615 /* it's an AnxData packet -- skip it (do nothing) */
619 if( p_stream->fmt.i_codec == VLC_CODEC_SUBT &&
620 p_oggpacket->packet[0] & PACKET_TYPE_BITS ) return;
622 /* Check the ES is selected */
623 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
624 p_stream->p_es, &b_selected );
626 if( p_stream->b_force_backup )
629 p_stream->i_packets_backup++;
630 switch( p_stream->fmt.i_codec )
632 case VLC_CODEC_VORBIS:
633 case VLC_CODEC_SPEEX:
634 case VLC_CODEC_THEORA:
635 if( p_stream->i_packets_backup == 3 ) p_stream->b_force_backup = 0;
640 if( !p_stream->fmt.audio.i_rate && p_stream->i_packets_backup == 2 )
642 Ogg_ReadFlacHeader( p_demux, p_stream, p_oggpacket );
643 p_stream->b_force_backup = 0;
645 else if( p_stream->fmt.audio.i_rate )
647 p_stream->b_force_backup = 0;
648 if( p_oggpacket->bytes >= 9 )
650 p_oggpacket->packet += 9;
651 p_oggpacket->bytes -= 9;
658 if( p_stream->i_packets_backup == p_stream->i_kate_num_headers ) p_stream->b_force_backup = 0;
663 p_stream->b_force_backup = 0;
668 /* Backup the ogg packet (likely an header packet) */
671 void *p_org = p_stream->p_headers;
672 p_stream->i_headers += p_oggpacket->bytes;
673 p_stream->p_headers = realloc( p_stream->p_headers, p_stream->i_headers );
674 if( p_stream->p_headers )
676 memcpy( p_stream->p_headers + p_stream->i_headers - p_oggpacket->bytes,
677 p_oggpacket->packet, p_stream->i_headers );
681 p_stream->i_headers = 0;
682 p_stream->p_headers = NULL;
686 else if( xiph_AppendHeaders( &p_stream->i_headers, &p_stream->p_headers,
687 p_oggpacket->bytes, p_oggpacket->packet ) )
689 p_stream->i_headers = 0;
690 p_stream->p_headers = NULL;
692 if( p_stream->i_headers > 0 )
694 if( !p_stream->b_force_backup )
696 /* Last header received, commit changes */
697 free( p_stream->fmt.p_extra );
699 p_stream->fmt.i_extra = p_stream->i_headers;
700 p_stream->fmt.p_extra = malloc( p_stream->i_headers );
701 if( p_stream->fmt.p_extra )
702 memcpy( p_stream->fmt.p_extra, p_stream->p_headers,
703 p_stream->i_headers );
705 p_stream->fmt.i_extra = 0;
707 if( Ogg_LogicalStreamResetEsFormat( p_demux, p_stream ) )
708 es_out_Control( p_demux->out, ES_OUT_SET_ES_FMT,
709 p_stream->p_es, &p_stream->fmt );
711 if( p_stream->i_headers > 0 )
712 Ogg_ExtractMeta( p_demux, p_stream->fmt.i_codec,
713 p_stream->p_headers, p_stream->i_headers );
715 /* we're not at BOS anymore for this logical stream */
720 b_selected = false; /* Discard the header packet */
723 /* Convert the pcr into a pts */
724 if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS ||
725 p_stream->fmt.i_codec == VLC_CODEC_SPEEX ||
726 p_stream->fmt.i_codec == VLC_CODEC_FLAC )
728 if( p_stream->i_pcr >= 0 )
730 /* This is for streams where the granulepos of the header packets
731 * doesn't match these of the data packets (eg. ogg web radios). */
732 if( p_stream->i_previous_pcr == 0 &&
733 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY )
735 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
737 /* Call the pace control */
738 es_out_Control( p_demux->out, ES_OUT_SET_PCR,
739 VLC_TS_0 + p_stream->i_pcr );
742 p_stream->i_previous_pcr = p_stream->i_pcr;
744 /* The granulepos is the end date of the sample */
745 i_pts = p_stream->i_pcr;
749 /* Convert the granulepos into the next pcr */
750 i_interpolated_pts = p_stream->i_interpolated_pcr;
751 Ogg_UpdatePCR( p_stream, p_oggpacket );
753 /* SPU streams are typically discontinuous, do not mind large gaps */
754 if( p_stream->fmt.i_cat != SPU_ES )
756 if( p_stream->i_pcr >= 0 )
758 /* This is for streams where the granulepos of the header packets
759 * doesn't match these of the data packets (eg. ogg web radios). */
760 if( p_stream->i_previous_pcr == 0 &&
761 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY )
763 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
765 /* Call the pace control */
766 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_stream->i_pcr );
771 if( p_stream->fmt.i_codec != VLC_CODEC_VORBIS &&
772 p_stream->fmt.i_codec != VLC_CODEC_SPEEX &&
773 p_stream->fmt.i_codec != VLC_CODEC_FLAC &&
774 p_stream->i_pcr >= 0 )
776 p_stream->i_previous_pcr = p_stream->i_pcr;
778 /* The granulepos is the start date of the sample */
779 i_pts = p_stream->i_pcr;
784 /* This stream isn't currently selected so we don't need to decode it,
785 * but we did need to store its pcr as it might be selected later on */
789 if( p_oggpacket->bytes <= 0 )
792 if( !( p_block = block_New( p_demux, p_oggpacket->bytes ) ) ) return;
795 if( i_pts == 0 ) i_pts = VLC_TS_0;
796 else if( i_pts == -1 && i_interpolated_pts == 0 ) i_pts = VLC_TS_0;
797 else if( i_pts == -1 ) i_pts = VLC_TS_INVALID;
799 if( p_stream->fmt.i_cat == AUDIO_ES )
800 p_block->i_dts = p_block->i_pts = i_pts;
801 else if( p_stream->fmt.i_cat == SPU_ES )
803 p_block->i_dts = p_block->i_pts = i_pts;
804 p_block->i_length = 0;
806 else if( p_stream->fmt.i_codec == VLC_CODEC_THEORA )
808 p_block->i_dts = p_block->i_pts = i_pts;
809 if( (p_oggpacket->granulepos & ((1<<p_stream->i_granule_shift)-1)) == 0 )
811 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
814 else if( p_stream->fmt.i_codec == VLC_CODEC_DIRAC )
816 ogg_int64_t dts = p_oggpacket->granulepos >> 31;
817 ogg_int64_t delay = (p_oggpacket->granulepos >> 9) & 0x1fff;
819 uint64_t u_pnum = dts + delay;
821 p_block->i_dts = p_stream->i_pcr;
822 p_block->i_pts = VLC_TS_INVALID;
823 /* NB, OggDirac granulepos values are in units of 2*picturerate */
824 if( -1 != p_oggpacket->granulepos )
825 p_block->i_pts = u_pnum * INT64_C(1000000) / p_stream->f_rate / 2;
829 p_block->i_dts = i_pts;
830 p_block->i_pts = VLC_TS_INVALID;
833 if( p_stream->fmt.i_codec != VLC_CODEC_VORBIS &&
834 p_stream->fmt.i_codec != VLC_CODEC_SPEEX &&
835 p_stream->fmt.i_codec != VLC_CODEC_FLAC &&
836 p_stream->fmt.i_codec != VLC_CODEC_TARKIN &&
837 p_stream->fmt.i_codec != VLC_CODEC_THEORA &&
838 p_stream->fmt.i_codec != VLC_CODEC_CMML &&
839 p_stream->fmt.i_codec != VLC_CODEC_DIRAC &&
840 p_stream->fmt.i_codec != VLC_CODEC_KATE )
842 /* We remove the header from the packet */
843 i_header_len = (*p_oggpacket->packet & PACKET_LEN_BITS01) >> 6;
844 i_header_len |= (*p_oggpacket->packet & PACKET_LEN_BITS2) << 1;
846 if( p_stream->fmt.i_codec == VLC_CODEC_SUBT)
848 /* But with subtitles we need to retrieve the duration first */
851 if( i_header_len > 0 && p_oggpacket->bytes >= i_header_len + 1 )
853 for( i = 0, lenbytes = 0; i < i_header_len; i++ )
855 lenbytes = lenbytes << 8;
856 lenbytes += *(p_oggpacket->packet + i_header_len - i);
859 if( p_oggpacket->bytes - 1 - i_header_len > 2 ||
860 ( p_oggpacket->packet[i_header_len + 1] != ' ' &&
861 p_oggpacket->packet[i_header_len + 1] != 0 &&
862 p_oggpacket->packet[i_header_len + 1] != '\n' &&
863 p_oggpacket->packet[i_header_len + 1] != '\r' ) )
865 p_block->i_length = (mtime_t)lenbytes * 1000;
870 if( p_block->i_buffer >= (unsigned int)i_header_len )
871 p_block->i_buffer -= i_header_len;
873 p_block->i_buffer = 0;
876 if( p_stream->fmt.i_codec == VLC_CODEC_TARKIN )
878 /* FIXME: the biggest hack I've ever done */
879 msg_Warn( p_demux, "tarkin pts: %"PRId64", granule: %"PRId64,
880 p_block->i_pts, p_block->i_dts );
884 memcpy( p_block->p_buffer, p_oggpacket->packet + i_header_len,
885 p_oggpacket->bytes - i_header_len );
887 es_out_Send( p_demux->out, p_stream->p_es, p_block );
890 /****************************************************************************
891 * Ogg_FindLogicalStreams: Find the logical streams embedded in the physical
892 * stream and fill p_ogg.
893 *****************************************************************************
894 * The initial page of a logical stream is marked as a 'bos' page.
895 * Furthermore, the Ogg specification mandates that grouped bitstreams begin
896 * together and all of the initial pages must appear before any data pages.
898 * On success this function returns VLC_SUCCESS.
899 ****************************************************************************/
900 static int Ogg_FindLogicalStreams( demux_t *p_demux )
902 demux_sys_t *p_ogg = p_demux->p_sys ;
903 ogg_packet oggpacket;
907 while( Ogg_ReadPage( p_demux, &oggpage ) == VLC_SUCCESS )
909 if( ogg_page_bos( &oggpage ) )
912 /* All is wonderful in our fine fine little world.
913 * We found the beginning of our first logical stream. */
914 while( ogg_page_bos( &oggpage ) )
916 logical_stream_t *p_stream;
918 p_stream = malloc( sizeof(logical_stream_t) );
922 TAB_APPEND( p_ogg->i_streams, p_ogg->pp_stream, p_stream );
924 memset( p_stream, 0, sizeof(logical_stream_t) );
925 p_stream->p_headers = 0;
926 p_stream->i_secondary_header_packets = 0;
928 es_format_Init( &p_stream->fmt, 0, 0 );
929 es_format_Init( &p_stream->fmt_old, 0, 0 );
931 /* Setup the logical stream */
932 p_stream->i_serial_no = ogg_page_serialno( &oggpage );
933 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
935 /* Extract the initial header from the first page and verify
936 * the codec type of this Ogg bitstream */
937 if( ogg_stream_pagein( &p_stream->os, &oggpage ) < 0 )
939 /* error. stream version mismatch perhaps */
940 msg_Err( p_demux, "error reading first page of "
941 "Ogg bitstream data" );
945 /* FIXME: check return value */
946 ogg_stream_packetpeek( &p_stream->os, &oggpacket );
948 /* Check for Vorbis header */
949 if( oggpacket.bytes >= 7 &&
950 ! memcmp( oggpacket.packet, "\x01vorbis", 7 ) )
952 Ogg_ReadVorbisHeader( p_stream, &oggpacket );
953 msg_Dbg( p_demux, "found vorbis header" );
955 /* Check for Speex header */
956 else if( oggpacket.bytes >= 5 &&
957 ! memcmp( oggpacket.packet, "Speex", 5 ) )
959 Ogg_ReadSpeexHeader( p_stream, &oggpacket );
960 msg_Dbg( p_demux, "found speex header, channels: %i, "
961 "rate: %i, bitrate: %i",
962 p_stream->fmt.audio.i_channels,
963 (int)p_stream->f_rate, p_stream->fmt.i_bitrate );
965 /* Check for Flac header (< version 1.1.1) */
966 else if( oggpacket.bytes >= 4 &&
967 ! memcmp( oggpacket.packet, "fLaC", 4 ) )
969 msg_Dbg( p_demux, "found FLAC header" );
971 /* Grrrr!!!! Did they really have to put all the
972 * important info in the second header packet!!!
973 * (STREAMINFO metadata is in the following packet) */
974 p_stream->b_force_backup = 1;
976 p_stream->fmt.i_cat = AUDIO_ES;
977 p_stream->fmt.i_codec = VLC_CODEC_FLAC;
979 /* Check for Flac header (>= version 1.1.1) */
980 else if( oggpacket.bytes >= 13 && oggpacket.packet[0] ==0x7F &&
981 ! memcmp( &oggpacket.packet[1], "FLAC", 4 ) &&
982 ! memcmp( &oggpacket.packet[9], "fLaC", 4 ) )
984 int i_packets = ((int)oggpacket.packet[7]) << 8 |
986 msg_Dbg( p_demux, "found FLAC header version %i.%i "
987 "(%i header packets)",
988 oggpacket.packet[5], oggpacket.packet[6],
991 p_stream->b_force_backup = 1;
993 p_stream->fmt.i_cat = AUDIO_ES;
994 p_stream->fmt.i_codec = VLC_CODEC_FLAC;
995 oggpacket.packet += 13; oggpacket.bytes -= 13;
996 Ogg_ReadFlacHeader( p_demux, p_stream, &oggpacket );
998 /* Check for Theora header */
999 else if( oggpacket.bytes >= 7 &&
1000 ! memcmp( oggpacket.packet, "\x80theora", 7 ) )
1002 Ogg_ReadTheoraHeader( p_stream, &oggpacket );
1005 "found theora header, bitrate: %i, rate: %f",
1006 p_stream->fmt.i_bitrate, p_stream->f_rate );
1008 /* Check for Dirac header */
1009 else if( oggpacket.bytes >= 5 &&
1010 ! memcmp( oggpacket.packet, "BBCD\x00", 5 ) )
1012 if( Ogg_ReadDiracHeader( p_stream, &oggpacket ) )
1013 msg_Dbg( p_demux, "found dirac header" );
1016 msg_Warn( p_demux, "found dirac header isn't decodable" );
1021 /* Check for Tarkin header */
1022 else if( oggpacket.bytes >= 7 &&
1023 ! memcmp( &oggpacket.packet[1], "tarkin", 6 ) )
1027 msg_Dbg( p_demux, "found tarkin header" );
1028 p_stream->fmt.i_cat = VIDEO_ES;
1029 p_stream->fmt.i_codec = VLC_CODEC_TARKIN;
1031 /* Cheat and get additionnal info ;) */
1032 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
1033 oggpack_adv( &opb, 88 );
1034 oggpack_adv( &opb, 104 );
1035 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
1036 p_stream->f_rate = 2; /* FIXME */
1038 "found tarkin header, bitrate: %i, rate: %f",
1039 p_stream->fmt.i_bitrate, p_stream->f_rate );
1041 /* Check for Annodex header */
1042 else if( oggpacket.bytes >= 7 &&
1043 ! memcmp( oggpacket.packet, "Annodex", 7 ) )
1045 Ogg_ReadAnnodexHeader( VLC_OBJECT(p_demux), p_stream,
1047 /* kill annodex track */
1051 /* Check for Annodex header */
1052 else if( oggpacket.bytes >= 7 &&
1053 ! memcmp( oggpacket.packet, "AnxData", 7 ) )
1055 Ogg_ReadAnnodexHeader( VLC_OBJECT(p_demux), p_stream,
1058 /* Check for Kate header */
1059 else if( oggpacket.bytes >= 8 &&
1060 ! memcmp( &oggpacket.packet[1], "kate\0\0\0", 7 ) )
1062 Ogg_ReadKateHeader( p_stream, &oggpacket );
1063 msg_Dbg( p_demux, "found kate header" );
1065 else if( oggpacket.bytes >= 142 &&
1066 !memcmp( &oggpacket.packet[1],
1067 "Direct Show Samples embedded in Ogg", 35 ))
1069 /* Old header type */
1071 /* Check for video header (old format) */
1072 if( GetDWLE((oggpacket.packet+96)) == 0x05589f80 &&
1073 oggpacket.bytes >= 184 )
1075 p_stream->fmt.i_cat = VIDEO_ES;
1076 p_stream->fmt.i_codec =
1077 VLC_FOURCC( oggpacket.packet[68],
1078 oggpacket.packet[69],
1079 oggpacket.packet[70],
1080 oggpacket.packet[71] );
1081 msg_Dbg( p_demux, "found video header of type: %.4s",
1082 (char *)&p_stream->fmt.i_codec );
1084 p_stream->fmt.video.i_frame_rate = 10000000;
1085 p_stream->fmt.video.i_frame_rate_base =
1086 GetQWLE((oggpacket.packet+164));
1087 p_stream->f_rate = 10000000.0 /
1088 GetQWLE((oggpacket.packet+164));
1089 p_stream->fmt.video.i_bits_per_pixel =
1090 GetWLE((oggpacket.packet+182));
1091 if( !p_stream->fmt.video.i_bits_per_pixel )
1093 p_stream->fmt.video.i_bits_per_pixel = 24;
1094 p_stream->fmt.video.i_width =
1095 GetDWLE((oggpacket.packet+176));
1096 p_stream->fmt.video.i_height =
1097 GetDWLE((oggpacket.packet+180));
1100 "fps: %f, width:%i; height:%i, bitcount:%i",
1102 p_stream->fmt.video.i_width,
1103 p_stream->fmt.video.i_height,
1104 p_stream->fmt.video.i_bits_per_pixel);
1107 /* Check for audio header (old format) */
1108 else if( GetDWLE((oggpacket.packet+96)) == 0x05589F81 )
1111 unsigned int i_format_tag;
1113 p_stream->fmt.i_cat = AUDIO_ES;
1115 i_extra_size = GetWLE((oggpacket.packet+140));
1116 if( i_extra_size > 0 && i_extra_size < oggpacket.bytes - 142 )
1118 p_stream->fmt.i_extra = i_extra_size;
1119 p_stream->fmt.p_extra = malloc( i_extra_size );
1120 if( p_stream->fmt.p_extra )
1121 memcpy( p_stream->fmt.p_extra,
1122 oggpacket.packet + 142, i_extra_size );
1124 p_stream->fmt.i_extra = 0;
1127 i_format_tag = GetWLE((oggpacket.packet+124));
1128 p_stream->fmt.audio.i_channels =
1129 GetWLE((oggpacket.packet+126));
1130 p_stream->f_rate = p_stream->fmt.audio.i_rate =
1131 GetDWLE((oggpacket.packet+128));
1132 p_stream->fmt.i_bitrate =
1133 GetDWLE((oggpacket.packet+132)) * 8;
1134 p_stream->fmt.audio.i_blockalign =
1135 GetWLE((oggpacket.packet+136));
1136 p_stream->fmt.audio.i_bitspersample =
1137 GetWLE((oggpacket.packet+138));
1139 wf_tag_to_fourcc( i_format_tag,
1140 &p_stream->fmt.i_codec, 0 );
1142 if( p_stream->fmt.i_codec ==
1143 VLC_FOURCC('u','n','d','f') )
1145 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
1146 ( i_format_tag >> 8 ) & 0xff,
1147 i_format_tag & 0xff );
1150 msg_Dbg( p_demux, "found audio header of type: %.4s",
1151 (char *)&p_stream->fmt.i_codec );
1152 msg_Dbg( p_demux, "audio:0x%4.4x channels:%d %dHz "
1153 "%dbits/sample %dkb/s",
1155 p_stream->fmt.audio.i_channels,
1156 p_stream->fmt.audio.i_rate,
1157 p_stream->fmt.audio.i_bitspersample,
1158 p_stream->fmt.i_bitrate / 1024 );
1163 msg_Dbg( p_demux, "stream %d has an old header "
1164 "but is of an unknown type", p_ogg->i_streams-1 );
1169 else if( (*oggpacket.packet & PACKET_TYPE_BITS ) == PACKET_TYPE_HEADER &&
1170 oggpacket.bytes >= 56+1 )
1172 stream_header_t tmp;
1173 stream_header_t *st = &tmp;
1175 memcpy( st->streamtype, &oggpacket.packet[1+0], 8 );
1176 memcpy( st->subtype, &oggpacket.packet[1+8], 4 );
1177 st->size = GetDWLE( &oggpacket.packet[1+12] );
1178 st->time_unit = GetQWLE( &oggpacket.packet[1+16] );
1179 st->samples_per_unit = GetQWLE( &oggpacket.packet[1+24] );
1180 st->default_len = GetDWLE( &oggpacket.packet[1+32] );
1181 st->buffersize = GetDWLE( &oggpacket.packet[1+36] );
1182 st->bits_per_sample = GetWLE( &oggpacket.packet[1+40] ); // (padding 2)
1184 /* Check for video header (new format) */
1185 if( !strncmp( st->streamtype, "video", 5 ) )
1187 st->sh.video.width = GetDWLE( &oggpacket.packet[1+44] );
1188 st->sh.video.height = GetDWLE( &oggpacket.packet[1+48] );
1190 p_stream->fmt.i_cat = VIDEO_ES;
1192 /* We need to get rid of the header packet */
1193 ogg_stream_packetout( &p_stream->os, &oggpacket );
1195 p_stream->fmt.i_codec =
1196 VLC_FOURCC( st->subtype[0], st->subtype[1],
1197 st->subtype[2], st->subtype[3] );
1198 msg_Dbg( p_demux, "found video header of type: %.4s",
1199 (char *)&p_stream->fmt.i_codec );
1201 p_stream->fmt.video.i_frame_rate = 10000000;
1202 p_stream->fmt.video.i_frame_rate_base = st->time_unit;
1203 if( st->time_unit <= 0 )
1204 st->time_unit = 400000;
1205 p_stream->f_rate = 10000000.0 / st->time_unit;
1206 p_stream->fmt.video.i_bits_per_pixel = st->bits_per_sample;
1207 p_stream->fmt.video.i_width = st->sh.video.width;
1208 p_stream->fmt.video.i_height = st->sh.video.height;
1211 "fps: %f, width:%i; height:%i, bitcount:%i",
1213 p_stream->fmt.video.i_width,
1214 p_stream->fmt.video.i_height,
1215 p_stream->fmt.video.i_bits_per_pixel );
1217 /* Check for audio header (new format) */
1218 else if( !strncmp( st->streamtype, "audio", 5 ) )
1224 st->sh.audio.channels = GetWLE( &oggpacket.packet[1+44] );
1225 st->sh.audio.blockalign = GetWLE( &oggpacket.packet[1+48] );
1226 st->sh.audio.avgbytespersec = GetDWLE( &oggpacket.packet[1+52] );
1228 p_stream->fmt.i_cat = AUDIO_ES;
1230 /* We need to get rid of the header packet */
1231 ogg_stream_packetout( &p_stream->os, &oggpacket );
1233 i_extra_size = st->size - 56;
1235 if( i_extra_size > 0 &&
1236 i_extra_size < oggpacket.bytes - 1 - 56 )
1238 p_stream->fmt.i_extra = i_extra_size;
1239 p_stream->fmt.p_extra = malloc( p_stream->fmt.i_extra );
1240 if( p_stream->fmt.p_extra )
1241 memcpy( p_stream->fmt.p_extra, st + 1,
1242 p_stream->fmt.i_extra );
1244 p_stream->fmt.i_extra = 0;
1247 memcpy( p_buffer, st->subtype, 4 );
1249 i_format_tag = strtol(p_buffer,NULL,16);
1250 p_stream->fmt.audio.i_channels = st->sh.audio.channels;
1251 if( st->time_unit <= 0 )
1252 st->time_unit = 10000000;
1253 p_stream->f_rate = p_stream->fmt.audio.i_rate = st->samples_per_unit * 10000000 / st->time_unit;
1254 p_stream->fmt.i_bitrate = st->sh.audio.avgbytespersec * 8;
1255 p_stream->fmt.audio.i_blockalign = st->sh.audio.blockalign;
1256 p_stream->fmt.audio.i_bitspersample = st->bits_per_sample;
1258 wf_tag_to_fourcc( i_format_tag,
1259 &p_stream->fmt.i_codec, 0 );
1261 if( p_stream->fmt.i_codec ==
1262 VLC_FOURCC('u','n','d','f') )
1264 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
1265 ( i_format_tag >> 8 ) & 0xff,
1266 i_format_tag & 0xff );
1269 msg_Dbg( p_demux, "found audio header of type: %.4s",
1270 (char *)&p_stream->fmt.i_codec );
1271 msg_Dbg( p_demux, "audio:0x%4.4x channels:%d %dHz "
1272 "%dbits/sample %dkb/s",
1274 p_stream->fmt.audio.i_channels,
1275 p_stream->fmt.audio.i_rate,
1276 p_stream->fmt.audio.i_bitspersample,
1277 p_stream->fmt.i_bitrate / 1024 );
1279 /* Check for text (subtitles) header */
1280 else if( !strncmp(st->streamtype, "text", 4) )
1282 /* We need to get rid of the header packet */
1283 ogg_stream_packetout( &p_stream->os, &oggpacket );
1285 msg_Dbg( p_demux, "found text subtitles header" );
1286 p_stream->fmt.i_cat = SPU_ES;
1287 p_stream->fmt.i_codec = VLC_CODEC_SUBT;
1288 p_stream->f_rate = 1000; /* granulepos is in millisec */
1292 msg_Dbg( p_demux, "stream %d has a header marker "
1293 "but is of an unknown type", p_ogg->i_streams-1 );
1298 else if( oggpacket.bytes >= 7 &&
1299 ! memcmp( oggpacket.packet, "fishead", 7 ) )
1303 msg_Dbg( p_demux, "stream %d is a skeleton",
1304 p_ogg->i_streams-1 );
1305 /* FIXME: https://trac.videolan.org/vlc/ticket/1412 */
1309 msg_Dbg( p_demux, "stream %d is of unknown type",
1310 p_ogg->i_streams-1 );
1315 if( Ogg_ReadPage( p_demux, &oggpage ) != VLC_SUCCESS )
1316 return VLC_EGENERIC;
1319 /* we'll need to get all headers for all of those streams
1320 that we have to backup headers for */
1322 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1324 if( p_ogg->pp_stream[i_stream]->b_force_backup )
1329 /* This is the first data page, which means we are now finished
1330 * with the initial pages. We just need to store it in the relevant
1332 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1334 if( ogg_stream_pagein( &p_ogg->pp_stream[i_stream]->os,
1337 p_ogg->b_page_waiting = true;
1346 return VLC_EGENERIC;
1349 /****************************************************************************
1350 * Ogg_BeginningOfStream: Look for Beginning of Stream ogg pages and add
1351 * Elementary streams.
1352 ****************************************************************************/
1353 static int Ogg_BeginningOfStream( demux_t *p_demux )
1355 demux_sys_t *p_ogg = p_demux->p_sys ;
1356 logical_stream_t *p_old_stream = p_ogg->p_old_stream;
1359 /* Find the logical streams embedded in the physical stream and
1360 * initialize our p_ogg structure. */
1361 if( Ogg_FindLogicalStreams( p_demux ) != VLC_SUCCESS )
1363 msg_Warn( p_demux, "couldn't find any ogg logical stream" );
1364 return VLC_EGENERIC;
1367 p_ogg->i_bitrate = 0;
1369 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1371 logical_stream_t *p_stream = p_ogg->pp_stream[i_stream];
1373 p_stream->p_es = NULL;
1375 /* Try first to reuse an old ES */
1377 p_old_stream->fmt.i_cat == p_stream->fmt.i_cat &&
1378 p_old_stream->fmt.i_codec == p_stream->fmt.i_codec )
1380 msg_Dbg( p_demux, "will reuse old stream to avoid glitch" );
1382 p_stream->p_es = p_old_stream->p_es;
1383 es_format_Copy( &p_stream->fmt_old, &p_old_stream->fmt );
1385 p_old_stream->p_es = NULL;
1386 p_old_stream = NULL;
1389 if( !p_stream->p_es )
1391 /* Better be safe than sorry when possible with ogm */
1392 if( p_stream->fmt.i_codec == VLC_CODEC_MPGA ||
1393 p_stream->fmt.i_codec == VLC_CODEC_A52 )
1394 p_stream->fmt.b_packetized = false;
1396 p_stream->p_es = es_out_Add( p_demux->out, &p_stream->fmt );
1399 // TODO: something to do here ?
1400 if( p_stream->fmt.i_codec == VLC_CODEC_CMML )
1402 /* Set the CMML stream active */
1403 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_stream->p_es );
1406 p_ogg->i_bitrate += p_stream->fmt.i_bitrate;
1408 p_stream->i_pcr = p_stream->i_previous_pcr =
1409 p_stream->i_interpolated_pcr = -1;
1410 p_stream->b_reinit = false;
1413 if( p_ogg->p_old_stream )
1415 if( p_ogg->p_old_stream->p_es )
1416 msg_Dbg( p_demux, "old stream not reused" );
1417 Ogg_LogicalStreamDelete( p_demux, p_ogg->p_old_stream );
1418 p_ogg->p_old_stream = NULL;
1423 /****************************************************************************
1424 * Ogg_EndOfStream: clean up the ES when an End of Stream is detected.
1425 ****************************************************************************/
1426 static void Ogg_EndOfStream( demux_t *p_demux )
1428 demux_sys_t *p_ogg = p_demux->p_sys ;
1431 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1432 Ogg_LogicalStreamDelete( p_demux, p_ogg->pp_stream[i_stream] );
1433 free( p_ogg->pp_stream );
1436 p_ogg->i_bitrate = 0;
1437 p_ogg->i_streams = 0;
1438 p_ogg->pp_stream = NULL;
1442 vlc_meta_Delete( p_ogg->p_meta );
1443 p_ogg->p_meta = NULL;
1447 * This function delete and release all data associated to a logical_stream_t
1449 static void Ogg_LogicalStreamDelete( demux_t *p_demux, logical_stream_t *p_stream )
1451 if( p_stream->p_es )
1452 es_out_Del( p_demux->out, p_stream->p_es );
1454 ogg_stream_clear( &p_stream->os );
1455 free( p_stream->p_headers );
1457 es_format_Clean( &p_stream->fmt_old );
1458 es_format_Clean( &p_stream->fmt );
1463 * This function check if a we need to reset a decoder in case we are
1466 static bool Ogg_IsVorbisFormatCompatible( const es_format_t *p_new, const es_format_t *p_old )
1468 unsigned pi_new_size[XIPH_MAX_HEADER_COUNT];
1469 void *pp_new_data[XIPH_MAX_HEADER_COUNT];
1470 unsigned i_new_count;
1471 if( xiph_SplitHeaders(pi_new_size, pp_new_data, &i_new_count, p_new->i_extra, p_new->p_extra ) )
1474 unsigned pi_old_size[XIPH_MAX_HEADER_COUNT];
1475 void *pp_old_data[XIPH_MAX_HEADER_COUNT];
1476 unsigned i_old_count;
1477 if( xiph_SplitHeaders(pi_old_size, pp_old_data, &i_old_count, p_old->i_extra, p_old->p_extra ) )
1480 bool b_match = i_new_count == i_old_count;
1481 for( unsigned i = 0; i < i_new_count && b_match; i++ )
1483 /* Ignore vorbis comment */
1486 if( pi_new_size[i] != pi_old_size[i] ||
1487 memcmp( pp_new_data[i], pp_old_data[i], pi_new_size[i] ) )
1491 for( unsigned i = 0; i < i_new_count; i++ )
1492 free( pp_new_data[i] );
1493 for( unsigned i = 0; i < i_old_count; i++ )
1494 free( pp_old_data[i] );
1497 static bool Ogg_LogicalStreamResetEsFormat( demux_t *p_demux, logical_stream_t *p_stream )
1499 bool b_compatible = false;
1500 if( !p_stream->fmt_old.i_cat || !p_stream->fmt_old.i_codec )
1503 /* Only vorbis is supported */
1504 if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS )
1505 b_compatible = Ogg_IsVorbisFormatCompatible( &p_stream->fmt, &p_stream->fmt_old );
1508 msg_Warn( p_demux, "cannot reuse old stream, resetting the decoder" );
1510 return !b_compatible;
1512 static void Ogg_ExtractXiphMeta( demux_t *p_demux, const void *p_headers, unsigned i_headers, unsigned i_skip )
1514 demux_sys_t *p_ogg = p_demux->p_sys;
1516 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
1517 void *pp_data[XIPH_MAX_HEADER_COUNT];
1519 if( xiph_SplitHeaders( pi_size, pp_data, &i_count, i_headers, p_headers ) )
1522 /* TODO how to handle multiple comments properly ? */
1523 if( i_count >= 2 && pi_size[1] > i_skip )
1524 vorbis_ParseComment( &p_ogg->p_meta, (uint8_t*)pp_data[1] + i_skip, pi_size[1] - i_skip );
1526 for( unsigned i = 0; i < i_count; i++ )
1529 static void Ogg_ExtractMeta( demux_t *p_demux, vlc_fourcc_t i_codec, const uint8_t *p_headers, int i_headers )
1531 demux_sys_t *p_ogg = p_demux->p_sys;
1535 /* 3 headers with the 2° one being the comments */
1536 case VLC_CODEC_VORBIS:
1537 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 1+6 );
1539 case VLC_CODEC_THEORA:
1540 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 1+6 );
1542 case VLC_CODEC_SPEEX:
1543 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 0 );
1546 /* N headers with the 2° one being the comments */
1547 case VLC_CODEC_KATE:
1548 /* 1 byte for header type, 7 bytes for magic, 1 reserved zero byte */
1549 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 1+7+1 );
1553 case VLC_CODEC_FLAC:
1554 msg_Warn( p_demux, "Ogg_ExtractMeta does not support %4.4s", (const char*)&i_codec );
1558 case VLC_CODEC_CMML: /* CMML is XML text, doesn't have Vorbis comments */
1559 case VLC_CODEC_DIRAC:
1564 p_demux->info.i_update |= INPUT_UPDATE_META;
1567 static void Ogg_ReadTheoraHeader( logical_stream_t *p_stream,
1568 ogg_packet *p_oggpacket )
1571 int i_fps_numerator;
1572 int i_fps_denominator;
1573 int i_keyframe_frequency_force;
1575 p_stream->fmt.i_cat = VIDEO_ES;
1576 p_stream->fmt.i_codec = VLC_CODEC_THEORA;
1578 /* Signal that we want to keep a backup of the theora
1579 * stream headers. They will be used when switching between
1581 p_stream->b_force_backup = 1;
1583 /* Cheat and get additionnal info ;) */
1584 bs_init( &bitstream, p_oggpacket->packet, p_oggpacket->bytes );
1585 bs_skip( &bitstream, 56 );
1586 bs_read( &bitstream, 8 ); /* major version num */
1587 bs_read( &bitstream, 8 ); /* minor version num */
1588 bs_read( &bitstream, 8 ); /* subminor version num */
1589 bs_read( &bitstream, 16 ) /*<< 4*/; /* width */
1590 bs_read( &bitstream, 16 ) /*<< 4*/; /* height */
1591 bs_read( &bitstream, 24 ); /* frame width */
1592 bs_read( &bitstream, 24 ); /* frame height */
1593 bs_read( &bitstream, 8 ); /* x offset */
1594 bs_read( &bitstream, 8 ); /* y offset */
1596 i_fps_numerator = bs_read( &bitstream, 32 );
1597 i_fps_denominator = bs_read( &bitstream, 32 );
1598 bs_read( &bitstream, 24 ); /* aspect_numerator */
1599 bs_read( &bitstream, 24 ); /* aspect_denominator */
1601 p_stream->fmt.video.i_frame_rate = i_fps_numerator;
1602 p_stream->fmt.video.i_frame_rate_base = i_fps_denominator;
1604 bs_read( &bitstream, 8 ); /* colorspace */
1605 p_stream->fmt.i_bitrate = bs_read( &bitstream, 24 );
1606 bs_read( &bitstream, 6 ); /* quality */
1608 i_keyframe_frequency_force = 1 << bs_read( &bitstream, 5 );
1610 /* granule_shift = i_log( frequency_force -1 ) */
1611 p_stream->i_granule_shift = 0;
1612 i_keyframe_frequency_force--;
1613 while( i_keyframe_frequency_force )
1615 p_stream->i_granule_shift++;
1616 i_keyframe_frequency_force >>= 1;
1619 p_stream->f_rate = ((float)i_fps_numerator) / i_fps_denominator;
1622 static void Ogg_ReadVorbisHeader( logical_stream_t *p_stream,
1623 ogg_packet *p_oggpacket )
1627 p_stream->fmt.i_cat = AUDIO_ES;
1628 p_stream->fmt.i_codec = VLC_CODEC_VORBIS;
1630 /* Signal that we want to keep a backup of the vorbis
1631 * stream headers. They will be used when switching between
1633 p_stream->b_force_backup = 1;
1635 /* Cheat and get additionnal info ;) */
1636 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1637 oggpack_adv( &opb, 88 );
1638 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 8 );
1639 p_stream->f_rate = p_stream->fmt.audio.i_rate =
1640 oggpack_read( &opb, 32 );
1641 oggpack_adv( &opb, 32 );
1642 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
1645 static void Ogg_ReadSpeexHeader( logical_stream_t *p_stream,
1646 ogg_packet *p_oggpacket )
1650 p_stream->fmt.i_cat = AUDIO_ES;
1651 p_stream->fmt.i_codec = VLC_CODEC_SPEEX;
1653 /* Signal that we want to keep a backup of the speex
1654 * stream headers. They will be used when switching between
1656 p_stream->b_force_backup = 1;
1658 /* Cheat and get additionnal info ;) */
1659 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1660 oggpack_adv( &opb, 224 );
1661 oggpack_adv( &opb, 32 ); /* speex_version_id */
1662 oggpack_adv( &opb, 32 ); /* header_size */
1663 p_stream->f_rate = p_stream->fmt.audio.i_rate = oggpack_read( &opb, 32 );
1664 oggpack_adv( &opb, 32 ); /* mode */
1665 oggpack_adv( &opb, 32 ); /* mode_bitstream_version */
1666 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 32 );
1667 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
1670 static void Ogg_ReadFlacHeader( demux_t *p_demux, logical_stream_t *p_stream,
1671 ogg_packet *p_oggpacket )
1673 /* Parse the STREAMINFO metadata */
1676 bs_init( &s, p_oggpacket->packet, p_oggpacket->bytes );
1679 if( bs_read( &s, 7 ) == 0 )
1681 if( bs_read( &s, 24 ) >= 34 /*size STREAMINFO*/ )
1684 p_stream->f_rate = p_stream->fmt.audio.i_rate = bs_read( &s, 20 );
1685 p_stream->fmt.audio.i_channels = bs_read( &s, 3 ) + 1;
1687 msg_Dbg( p_demux, "FLAC header, channels: %i, rate: %i",
1688 p_stream->fmt.audio.i_channels, (int)p_stream->f_rate );
1692 msg_Dbg( p_demux, "FLAC STREAMINFO metadata too short" );
1695 /* Fake this as the last metadata block */
1696 *((uint8_t*)p_oggpacket->packet) |= 0x80;
1700 /* This ain't a STREAMINFO metadata */
1701 msg_Dbg( p_demux, "Invalid FLAC STREAMINFO metadata" );
1705 static void Ogg_ReadKateHeader( logical_stream_t *p_stream,
1706 ogg_packet *p_oggpacket )
1714 p_stream->fmt.i_cat = SPU_ES;
1715 p_stream->fmt.i_codec = VLC_CODEC_KATE;
1717 /* Signal that we want to keep a backup of the kate
1718 * stream headers. They will be used when switching between
1720 p_stream->b_force_backup = 1;
1722 /* Cheat and get additionnal info ;) */
1723 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1724 oggpack_adv( &opb, 11*8 ); /* packet type, kate magic, version */
1725 p_stream->i_kate_num_headers = oggpack_read( &opb, 8 );
1726 oggpack_adv( &opb, 3*8 );
1727 p_stream->i_granule_shift = oggpack_read( &opb, 8 );
1728 oggpack_adv( &opb, 8*8 ); /* reserved */
1729 gnum = oggpack_read( &opb, 32 );
1730 gden = oggpack_read( &opb, 32 );
1731 p_stream->f_rate = (double)gnum/gden;
1733 p_stream->fmt.psz_language = malloc(16);
1734 if( p_stream->fmt.psz_language )
1736 for( n = 0; n < 16; n++ )
1737 p_stream->fmt.psz_language[n] = oggpack_read(&opb,8);
1738 p_stream->fmt.psz_language[15] = 0; /* just in case */
1742 for( n = 0; n < 16; n++ )
1743 oggpack_read(&opb,8);
1745 p_stream->fmt.psz_description = malloc(16);
1746 if( p_stream->fmt.psz_description )
1748 for( n = 0; n < 16; n++ )
1749 p_stream->fmt.psz_description[n] = oggpack_read(&opb,8);
1750 p_stream->fmt.psz_description[15] = 0; /* just in case */
1752 /* Now find a localized user readable description for this category */
1753 psz_desc = strdup(FindKateCategoryName(p_stream->fmt.psz_description));
1756 free( p_stream->fmt.psz_description );
1757 p_stream->fmt.psz_description = psz_desc;
1762 for( n = 0; n < 16; n++ )
1763 oggpack_read(&opb,8);
1767 static void Ogg_ReadAnnodexHeader( vlc_object_t *p_this,
1768 logical_stream_t *p_stream,
1769 ogg_packet *p_oggpacket )
1771 if( p_oggpacket->bytes >= 28 &&
1772 !memcmp( p_oggpacket->packet, "Annodex", 7 ) )
1776 uint16_t major_version;
1777 uint16_t minor_version;
1778 uint64_t timebase_numerator;
1779 uint64_t timebase_denominator;
1781 Ogg_ReadTheoraHeader( p_stream, p_oggpacket );
1783 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1784 oggpack_adv( &opb, 8*8 ); /* "Annodex\0" header */
1785 major_version = oggpack_read( &opb, 2*8 ); /* major version */
1786 minor_version = oggpack_read( &opb, 2*8 ); /* minor version */
1787 timebase_numerator = GetQWLE( &p_oggpacket->packet[16] );
1788 timebase_denominator = GetQWLE( &p_oggpacket->packet[24] );
1790 else if( p_oggpacket->bytes >= 42 &&
1791 !memcmp( p_oggpacket->packet, "AnxData", 7 ) )
1793 uint64_t granule_rate_numerator;
1794 uint64_t granule_rate_denominator;
1795 char content_type_string[1024];
1797 /* Read in Annodex header fields */
1799 granule_rate_numerator = GetQWLE( &p_oggpacket->packet[8] );
1800 granule_rate_denominator = GetQWLE( &p_oggpacket->packet[16] );
1801 p_stream->i_secondary_header_packets =
1802 GetDWLE( &p_oggpacket->packet[24] );
1804 /* we are guaranteed that the first header field will be
1805 * the content-type (by the Annodex standard) */
1806 content_type_string[0] = '\0';
1807 if( !strncasecmp( (char*)(&p_oggpacket->packet[28]), "Content-Type: ", 14 ) )
1809 uint8_t *p = memchr( &p_oggpacket->packet[42], '\r',
1810 p_oggpacket->bytes - 1 );
1811 if( p && p[0] == '\r' && p[1] == '\n' )
1812 sscanf( (char*)(&p_oggpacket->packet[42]), "%1023s\r\n",
1813 content_type_string );
1816 msg_Dbg( p_this, "AnxData packet info: %"PRId64" / %"PRId64", %d, ``%s''",
1817 granule_rate_numerator, granule_rate_denominator,
1818 p_stream->i_secondary_header_packets, content_type_string );
1820 p_stream->f_rate = (float) granule_rate_numerator /
1821 (float) granule_rate_denominator;
1823 /* What type of file do we have?
1824 * strcmp is safe to use here because we've extracted
1825 * content_type_string from the stream manually */
1826 if( !strncmp(content_type_string, "audio/x-wav", 11) )
1828 /* n.b. WAVs are unsupported right now */
1829 p_stream->fmt.i_cat = UNKNOWN_ES;
1831 else if( !strncmp(content_type_string, "audio/x-vorbis", 14) )
1833 p_stream->fmt.i_cat = AUDIO_ES;
1834 p_stream->fmt.i_codec = VLC_CODEC_VORBIS;
1836 p_stream->b_force_backup = 1;
1838 else if( !strncmp(content_type_string, "audio/x-speex", 14) )
1840 p_stream->fmt.i_cat = AUDIO_ES;
1841 p_stream->fmt.i_codec = VLC_CODEC_SPEEX;
1843 p_stream->b_force_backup = 1;
1845 else if( !strncmp(content_type_string, "video/x-theora", 14) )
1847 p_stream->fmt.i_cat = VIDEO_ES;
1848 p_stream->fmt.i_codec = VLC_CODEC_THEORA;
1850 p_stream->b_force_backup = 1;
1852 else if( !strncmp(content_type_string, "video/x-xvid", 14) )
1854 p_stream->fmt.i_cat = VIDEO_ES;
1855 p_stream->fmt.i_codec = VLC_FOURCC( 'x','v','i','d' );
1857 p_stream->b_force_backup = 1;
1859 else if( !strncmp(content_type_string, "video/mpeg", 14) )
1861 /* n.b. MPEG streams are unsupported right now */
1862 p_stream->fmt.i_cat = VIDEO_ES;
1863 p_stream->fmt.i_codec = VLC_CODEC_MPGV;
1865 else if( !strncmp(content_type_string, "text/x-cmml", 11) )
1867 ogg_stream_packetout( &p_stream->os, p_oggpacket );
1868 p_stream->fmt.i_cat = SPU_ES;
1869 p_stream->fmt.i_codec = VLC_CODEC_CMML;
1874 static uint32_t dirac_uint( bs_t *p_bs )
1876 uint32_t u_count = 0, u_value = 0;
1878 while( !bs_eof( p_bs ) && !bs_read( p_bs, 1 ) )
1882 u_value |= bs_read( p_bs, 1 );
1885 return (1<<u_count) - 1 + u_value;
1888 static int dirac_bool( bs_t *p_bs )
1890 return bs_read( p_bs, 1 );
1893 static bool Ogg_ReadDiracHeader( logical_stream_t *p_stream,
1894 ogg_packet *p_oggpacket )
1896 static const struct {
1897 uint32_t u_n /* numerator */, u_d /* denominator */;
1898 } p_dirac_frate_tbl[] = { /* table 10.3 */
1899 {1,1}, /* this first value is never used */
1900 {24000,1001}, {24,1}, {25,1}, {30000,1001}, {30,1},
1901 {50,1}, {60000,1001}, {60,1}, {15000,1001}, {25,2},
1903 static const size_t u_dirac_frate_tbl = sizeof(p_dirac_frate_tbl)/sizeof(*p_dirac_frate_tbl);
1905 static const uint32_t pu_dirac_vidfmt_frate[] = { /* table C.1 */
1906 1, 9, 10, 9, 10, 9, 10, 4, 3, 7, 6, 4, 3, 7, 6, 2, 2, 7, 6, 7, 6,
1908 static const size_t u_dirac_vidfmt_frate = sizeof(pu_dirac_vidfmt_frate)/sizeof(*pu_dirac_vidfmt_frate);
1912 p_stream->i_granule_shift = 22; /* not 32 */
1914 /* Backing up stream headers is not required -- seqhdrs are repeated
1915 * thoughout the stream at suitable decoding start points */
1916 p_stream->b_force_backup = 0;
1918 /* read in useful bits from sequence header */
1919 bs_init( &bs, p_oggpacket->packet, p_oggpacket->bytes );
1920 bs_skip( &bs, 13*8); /* parse_info_header */
1921 dirac_uint( &bs ); /* major_version */
1922 dirac_uint( &bs ); /* minor_version */
1923 dirac_uint( &bs ); /* profile */
1924 dirac_uint( &bs ); /* level */
1926 uint32_t u_video_format = dirac_uint( &bs ); /* index */
1927 if( u_video_format >= u_dirac_vidfmt_frate )
1929 /* don't know how to parse this ogg dirac stream */
1933 if( dirac_bool( &bs ) )
1935 dirac_uint( &bs ); /* frame_width */
1936 dirac_uint( &bs ); /* frame_height */
1939 if( dirac_bool( &bs ) )
1941 dirac_uint( &bs ); /* chroma_format */
1944 if( dirac_bool( &bs ) )
1946 dirac_uint( &bs ); /* scan_format */
1949 uint32_t u_n = p_dirac_frate_tbl[pu_dirac_vidfmt_frate[u_video_format]].u_n;
1950 uint32_t u_d = p_dirac_frate_tbl[pu_dirac_vidfmt_frate[u_video_format]].u_d;
1951 if( dirac_bool( &bs ) )
1953 uint32_t u_frame_rate_index = dirac_uint( &bs );
1954 if( u_frame_rate_index >= u_dirac_frate_tbl )
1956 /* something is wrong with this stream */
1959 u_n = p_dirac_frate_tbl[u_frame_rate_index].u_n;
1960 u_d = p_dirac_frate_tbl[u_frame_rate_index].u_d;
1961 if( u_frame_rate_index == 0 )
1963 u_n = dirac_uint( &bs ); /* frame_rate_numerator */
1964 u_d = dirac_uint( &bs ); /* frame_rate_denominator */
1967 p_stream->f_rate = (float) u_n / u_d;
1969 /* probably is an ogg dirac es */
1970 p_stream->fmt.i_cat = VIDEO_ES;
1971 p_stream->fmt.i_codec = VLC_CODEC_DIRAC;