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>
43 /*****************************************************************************
45 *****************************************************************************/
46 static int Open ( vlc_object_t * );
47 static void Close( vlc_object_t * );
50 set_shortname ( "OGG" )
51 set_description( N_("OGG demuxer" ) )
52 set_category( CAT_INPUT )
53 set_subcategory( SUBCAT_INPUT_DEMUX )
54 set_capability( "demux", 50 )
55 set_callbacks( Open, Close )
60 /*****************************************************************************
61 * Definitions of structures and functions used by this plugins
62 *****************************************************************************/
63 typedef struct logical_stream_s
65 ogg_stream_state os; /* logical stream of packets */
68 es_format_t fmt_old; /* format of old ES is reused */
74 /* the header of some logical streams (eg vorbis) contain essential
75 * data for the decoder. We back them up here in case we need to re-feed
76 * them to the decoder. */
82 /* program clock reference (in units of 90kHz) derived from the previous
85 mtime_t i_interpolated_pcr;
86 mtime_t i_previous_pcr;
92 /* kate streams have the number of headers in the ID header */
93 int i_kate_num_headers;
95 /* for Annodex logical bitstreams */
96 int i_secondary_header_packets;
102 ogg_sync_state oy; /* sync and verify incoming physical bitstream */
104 int i_streams; /* number of logical bitstreams */
105 logical_stream_t **pp_stream; /* pointer to an array of logical streams */
107 logical_stream_t *p_old_stream; /* pointer to a old logical stream to avoid recreating it */
109 /* program clock reference (in units of 90kHz) derived from the pcr of
120 /* after reading all headers, the first data page is stuffed into the relevant stream, ready to use */
124 /* OggDS headers for the new header format (used in ogm files) */
129 } stream_header_video_t;
133 ogg_int16_t channels;
135 ogg_int16_t blockalign;
136 ogg_int32_t avgbytespersec;
137 } stream_header_audio_t;
144 ogg_int32_t size; /* size of the structure */
146 ogg_int64_t time_unit; /* in reference time */
147 ogg_int64_t samples_per_unit;
148 ogg_int32_t default_len; /* in media time */
150 ogg_int32_t buffersize;
151 ogg_int16_t bits_per_sample;
157 stream_header_video_t video;
159 stream_header_audio_t audio;
163 #define OGG_BLOCK_SIZE 4096
165 /* Some defines from OggDS */
166 #define PACKET_TYPE_HEADER 0x01
167 #define PACKET_TYPE_BITS 0x07
168 #define PACKET_LEN_BITS01 0xc0
169 #define PACKET_LEN_BITS2 0x02
170 #define PACKET_IS_SYNCPOINT 0x08
172 /*****************************************************************************
174 *****************************************************************************/
175 static int Demux ( demux_t * );
176 static int Control( demux_t *, int, va_list );
178 /* Bitstream manipulation */
179 static int Ogg_ReadPage ( demux_t *, ogg_page * );
180 static void Ogg_UpdatePCR ( logical_stream_t *, ogg_packet * );
181 static void Ogg_DecodePacket ( demux_t *, logical_stream_t *, ogg_packet * );
183 static int Ogg_BeginningOfStream( demux_t *p_demux );
184 static int Ogg_FindLogicalStreams( demux_t *p_demux );
185 static void Ogg_EndOfStream( demux_t *p_demux );
188 static void Ogg_LogicalStreamDelete( demux_t *p_demux, logical_stream_t *p_stream );
189 static bool Ogg_LogicalStreamResetEsFormat( demux_t *p_demux, logical_stream_t *p_stream );
191 /* Logical bitstream headers */
192 static void Ogg_ReadTheoraHeader( logical_stream_t *, ogg_packet * );
193 static void Ogg_ReadVorbisHeader( logical_stream_t *, ogg_packet * );
194 static void Ogg_ReadSpeexHeader( logical_stream_t *, ogg_packet * );
195 static void Ogg_ReadKateHeader( logical_stream_t *, ogg_packet * );
196 static void Ogg_ReadFlacHeader( demux_t *, logical_stream_t *, ogg_packet * );
197 static void Ogg_ReadAnnodexHeader( vlc_object_t *, logical_stream_t *, ogg_packet * );
198 static bool Ogg_ReadDiracHeader( logical_stream_t *, ogg_packet * );
200 /*****************************************************************************
201 * Open: initializes ogg demux structures
202 *****************************************************************************/
203 static int Open( vlc_object_t * p_this )
205 demux_t *p_demux = (demux_t *)p_this;
207 const uint8_t *p_peek;
210 /* Check if we are dealing with an ogg stream */
211 if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 ) return VLC_EGENERIC;
212 if( !p_demux->b_force && memcmp( p_peek, "OggS", 4 ) )
217 /* Set exported functions */
218 p_demux->pf_demux = Demux;
219 p_demux->pf_control = Control;
220 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
224 memset( p_sys, 0, sizeof( demux_sys_t ) );
225 p_sys->i_bitrate = 0;
226 p_sys->pp_stream = NULL;
227 p_sys->p_old_stream = NULL;
229 /* Begnning of stream, tell the demux to look for elementary streams. */
233 /* Initialize the Ogg physical bitstream parser */
234 ogg_sync_init( &p_sys->oy );
235 p_sys->b_page_waiting = false;
240 /*****************************************************************************
241 * Close: frees unused data
242 *****************************************************************************/
243 static void Close( vlc_object_t *p_this )
245 demux_t *p_demux = (demux_t *)p_this;
246 demux_sys_t *p_sys = p_demux->p_sys ;
248 /* Cleanup the bitstream parser */
249 ogg_sync_clear( &p_sys->oy );
251 Ogg_EndOfStream( p_demux );
253 if( p_sys->p_old_stream )
254 Ogg_LogicalStreamDelete( p_demux, p_sys->p_old_stream );
259 /*****************************************************************************
260 * Demux: reads and demuxes data packets
261 *****************************************************************************
262 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
263 *****************************************************************************/
264 static int Demux( demux_t * p_demux )
266 demux_sys_t *p_sys = p_demux->p_sys;
268 ogg_packet oggpacket;
272 if( p_sys->i_eos == p_sys->i_streams )
276 msg_Dbg( p_demux, "end of a group of logical streams" );
277 /* We keep the ES to try reusing it in Ogg_BeginningOfStream
278 * only 1 ES is supported (common case for ogg web radio) */
279 if( p_sys->i_streams == 1 )
281 p_sys->p_old_stream = p_sys->pp_stream[0];
282 TAB_CLEAN( p_sys->i_streams, p_sys->pp_stream );
284 Ogg_EndOfStream( p_demux );
288 if( Ogg_BeginningOfStream( p_demux ) != VLC_SUCCESS )
291 msg_Dbg( p_demux, "beginning of a group of logical streams" );
292 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
296 * The first data page of a physical stream is stored in the relevant logical stream
297 * in Ogg_FindLogicalStreams. Therefore, we must not read a page and only update the
298 * stream it belongs to if we haven't processed this first page yet. If we do, we
299 * will only process that first page whenever we find the second page for this stream.
300 * While this is fine for Vorbis and Theora, which are continuous codecs, which means
301 * the second page will arrive real quick, this is not fine for Kate, whose second
302 * data page will typically arrive much later.
303 * This means it is now possible to seek right at the start of a stream where the last
304 * logical stream is Kate, without having to wait for the second data page to unblock
305 * the first one, which is the one that triggers the 'no more headers to backup' code.
306 * And, as we all know, seeking without having backed up all headers is bad, since the
307 * codec will fail to initialize if it's missing its headers.
309 if( !p_sys->b_page_waiting)
312 * Demux an ogg page from the stream
314 if( Ogg_ReadPage( p_demux, &oggpage ) != VLC_SUCCESS )
317 /* Test for End of Stream */
318 if( ogg_page_eos( &oggpage ) )
323 for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
325 logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
327 /* if we've just pulled page, look for the right logical stream */
328 if( !p_sys->b_page_waiting )
330 if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
334 while( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
336 /* Read info from any secondary header packets, if there are any */
337 if( p_stream->i_secondary_header_packets > 0 )
339 if( p_stream->fmt.i_codec == VLC_FOURCC('t','h','e','o') &&
340 oggpacket.bytes >= 7 &&
341 ! memcmp( oggpacket.packet, "\x80theora", 7 ) )
343 Ogg_ReadTheoraHeader( p_stream, &oggpacket );
344 p_stream->i_secondary_header_packets = 0;
346 else if( p_stream->fmt.i_codec == VLC_FOURCC('v','o','r','b') &&
347 oggpacket.bytes >= 7 &&
348 ! memcmp( oggpacket.packet, "\x01vorbis", 7 ) )
350 Ogg_ReadVorbisHeader( p_stream, &oggpacket );
351 p_stream->i_secondary_header_packets = 0;
353 else if( p_stream->fmt.i_codec == VLC_FOURCC('c','m','m','l') )
355 p_stream->i_secondary_header_packets = 0;
359 if( p_stream->b_reinit )
361 /* If synchro is re-initialized we need to drop all the packets
362 * until we find a new dated one. */
363 Ogg_UpdatePCR( p_stream, &oggpacket );
365 if( p_stream->i_pcr >= 0 )
367 p_stream->b_reinit = false;
371 p_stream->i_interpolated_pcr = -1;
375 /* An Ogg/vorbis packet contains an end date granulepos */
376 if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) ||
377 p_stream->fmt.i_codec == VLC_FOURCC( 's','p','x',' ' ) ||
378 p_stream->fmt.i_codec == VLC_FOURCC( 'f','l','a','c' ) )
380 if( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
382 Ogg_DecodePacket( p_demux, p_stream, &oggpacket );
386 es_out_Control( p_demux->out, ES_OUT_SET_PCR,
393 Ogg_DecodePacket( p_demux, p_stream, &oggpacket );
396 if( !p_sys->b_page_waiting )
400 /* if a page was waiting, it's now processed */
401 p_sys->b_page_waiting = false;
404 for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
406 logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
408 if( p_stream->fmt.i_cat == SPU_ES )
410 if( p_stream->i_interpolated_pcr < 0 )
413 if( p_sys->i_pcr < 0 || p_stream->i_interpolated_pcr < p_sys->i_pcr )
414 p_sys->i_pcr = p_stream->i_interpolated_pcr;
417 if( p_sys->i_pcr >= 0 )
418 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
423 /*****************************************************************************
425 *****************************************************************************/
426 static int Control( demux_t *p_demux, int i_query, va_list args )
428 demux_sys_t *p_sys = p_demux->p_sys;
435 case DEMUX_HAS_UNSUPPORTED_META:
436 pb_bool = (bool*)va_arg( args, bool* );
441 pi64 = (int64_t*)va_arg( args, int64_t * );
442 *pi64 = p_sys->i_pcr;
448 case DEMUX_SET_POSITION:
449 /* forbid seeking if we haven't initialized all logical bitstreams yet;
450 if we allowed, some headers would not get backed up and decoder init
451 would fail, making that logical stream unusable */
452 if( p_sys->i_bos > 0 )
457 for( i = 0; i < p_sys->i_streams; i++ )
459 logical_stream_t *p_stream = p_sys->pp_stream[i];
461 /* we'll trash all the data until we find the next pcr */
462 p_stream->b_reinit = true;
463 p_stream->i_pcr = -1;
464 p_stream->i_interpolated_pcr = -1;
465 ogg_stream_reset( &p_stream->os );
467 ogg_sync_reset( &p_sys->oy );
468 /* XXX The break/return is missing on purpose as
469 * demux_vaControlHelper will do the last part of the job */
472 return demux_vaControlHelper( p_demux->s, 0, -1, p_sys->i_bitrate,
477 /****************************************************************************
478 * Ogg_ReadPage: Read a full Ogg page from the physical bitstream.
479 ****************************************************************************
480 * Returns VLC_SUCCESS if a page has been read. An error might happen if we
481 * are at the end of stream.
482 ****************************************************************************/
483 static int Ogg_ReadPage( demux_t *p_demux, ogg_page *p_oggpage )
485 demux_sys_t *p_ogg = p_demux->p_sys ;
489 while( ogg_sync_pageout( &p_ogg->oy, p_oggpage ) != 1 )
491 p_buffer = ogg_sync_buffer( &p_ogg->oy, OGG_BLOCK_SIZE );
493 i_read = stream_Read( p_demux->s, p_buffer, OGG_BLOCK_SIZE );
497 ogg_sync_wrote( &p_ogg->oy, i_read );
503 /****************************************************************************
504 * Ogg_UpdatePCR: update the PCR (90kHz program clock reference) for the
506 ****************************************************************************/
507 static void Ogg_UpdatePCR( logical_stream_t *p_stream,
508 ogg_packet *p_oggpacket )
510 /* Convert the granulepos into a pcr */
511 if( p_oggpacket->granulepos >= 0 )
513 if( p_stream->fmt.i_codec == VLC_FOURCC( 't','h','e','o' ) ||
514 p_stream->fmt.i_codec == VLC_FOURCC( 'k','a','t','e' ) )
516 ogg_int64_t iframe = p_oggpacket->granulepos >>
517 p_stream->i_granule_shift;
518 ogg_int64_t pframe = p_oggpacket->granulepos -
519 ( iframe << p_stream->i_granule_shift );
521 p_stream->i_pcr = ( iframe + pframe ) * INT64_C(1000000)
524 else if( p_stream->fmt.i_codec == VLC_FOURCC( 'd','r','a','c' ) )
526 ogg_int64_t i_dts = p_oggpacket->granulepos >> 31;
527 /* NB, OggDirac granulepos values are in units of 2*picturerate */
528 p_stream->i_pcr = (i_dts/2) * INT64_C(1000000) / p_stream->f_rate;
532 p_stream->i_pcr = p_oggpacket->granulepos * INT64_C(1000000)
536 p_stream->i_interpolated_pcr = p_stream->i_pcr;
540 p_stream->i_pcr = -1;
542 /* no granulepos available, try to interpolate the pcr.
543 * If we can't then don't touch the old value. */
544 if( p_stream->fmt.i_cat == VIDEO_ES )
545 /* 1 frame per packet */
546 p_stream->i_interpolated_pcr += (INT64_C(1000000) / p_stream->f_rate);
547 else if( p_stream->fmt.i_bitrate )
548 p_stream->i_interpolated_pcr +=
549 ( p_oggpacket->bytes * INT64_C(1000000) /
550 p_stream->fmt.i_bitrate / 8 );
554 /****************************************************************************
555 * Ogg_DecodePacket: Decode an Ogg packet.
556 ****************************************************************************/
557 static void Ogg_DecodePacket( demux_t *p_demux,
558 logical_stream_t *p_stream,
559 ogg_packet *p_oggpacket )
563 int i_header_len = 0;
564 mtime_t i_pts = -1, i_interpolated_pts;
565 demux_sys_t *p_ogg = p_demux->p_sys;
568 if( !p_oggpacket->bytes )
570 msg_Dbg( p_demux, "discarding 0 sized packet" );
574 if( p_oggpacket->bytes >= 7 &&
575 ! memcmp ( p_oggpacket->packet, "Annodex", 7 ) )
577 /* it's an Annodex packet -- skip it (do nothing) */
580 else if( p_oggpacket->bytes >= 7 &&
581 ! memcmp ( p_oggpacket->packet, "AnxData", 7 ) )
583 /* it's an AnxData packet -- skip it (do nothing) */
587 if( p_stream->fmt.i_codec == VLC_FOURCC( 's','u','b','t' ) &&
588 p_oggpacket->packet[0] & PACKET_TYPE_BITS ) return;
590 /* Check the ES is selected */
591 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
592 p_stream->p_es, &b_selected );
594 if( p_stream->b_force_backup )
597 bool b_store_size = true;
598 bool b_store_num_headers = false;
600 p_stream->i_packets_backup++;
601 switch( p_stream->fmt.i_codec )
603 case VLC_FOURCC( 'v','o','r','b' ):
604 case VLC_FOURCC( 's','p','x',' ' ):
605 case VLC_FOURCC( 't','h','e','o' ):
606 if( p_stream->i_packets_backup == 3 ) p_stream->b_force_backup = 0;
609 case VLC_FOURCC( 'f','l','a','c' ):
610 if( !p_stream->fmt.audio.i_rate && p_stream->i_packets_backup == 2 )
612 Ogg_ReadFlacHeader( p_demux, p_stream, p_oggpacket );
613 p_stream->b_force_backup = 0;
615 else if( p_stream->fmt.audio.i_rate )
617 p_stream->b_force_backup = 0;
618 if( p_oggpacket->bytes >= 9 )
620 p_oggpacket->packet += 9;
621 p_oggpacket->bytes -= 9;
624 b_store_size = false;
627 case VLC_FOURCC( 'k','a','t','e' ):
628 if( p_stream->i_packets_backup == 1)
629 b_store_num_headers = true;
630 if( p_stream->i_packets_backup == p_stream->i_kate_num_headers ) p_stream->b_force_backup = 0;
634 p_stream->b_force_backup = 0;
638 /* Backup the ogg packet (likely an header packet) */
639 p_stream->p_headers =
640 realloc( p_sav = p_stream->p_headers, p_stream->i_headers +
641 p_oggpacket->bytes + (b_store_size ? 2 : 0) + (b_store_num_headers ? 1 : 0) );
642 if( p_stream->p_headers )
644 uint8_t *p_extra = p_stream->p_headers + p_stream->i_headers;
646 if( b_store_num_headers )
648 /* Kate streams store the number of headers in the first header,
649 so we can't just test for 3 as Vorbis/Theora */
650 *(p_extra++) = p_stream->i_kate_num_headers;
654 *(p_extra++) = p_oggpacket->bytes >> 8;
655 *(p_extra++) = p_oggpacket->bytes & 0xFF;
657 memcpy( p_extra, p_oggpacket->packet, p_oggpacket->bytes );
658 p_stream->i_headers += p_oggpacket->bytes + (b_store_size ? 2 : 0) + (b_store_num_headers ? 1 : 0);
660 if( !p_stream->b_force_backup )
662 /* Last header received, commit changes */
663 free( p_stream->fmt.p_extra );
665 p_stream->fmt.i_extra = p_stream->i_headers;
666 p_stream->fmt.p_extra = malloc( p_stream->i_headers );
667 if( p_stream->fmt.p_extra )
668 memcpy( p_stream->fmt.p_extra, p_stream->p_headers,
669 p_stream->i_headers );
671 p_stream->fmt.i_extra = 0;
673 if( Ogg_LogicalStreamResetEsFormat( p_demux, p_stream ) )
674 es_out_Control( p_demux->out, ES_OUT_SET_ES_FMT,
675 p_stream->p_es, &p_stream->fmt );
677 /* we're not at BOS anymore for this logical stream */
683 p_stream->p_headers = p_sav;
686 b_selected = false; /* Discard the header packet */
689 /* Convert the pcr into a pts */
690 if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) ||
691 p_stream->fmt.i_codec == VLC_FOURCC( 's','p','x',' ' ) ||
692 p_stream->fmt.i_codec == VLC_FOURCC( 'f','l','a','c' ) )
694 if( p_stream->i_pcr >= 0 )
696 /* This is for streams where the granulepos of the header packets
697 * doesn't match these of the data packets (eg. ogg web radios). */
698 if( p_stream->i_previous_pcr == 0 &&
699 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY )
701 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
703 /* Call the pace control */
704 es_out_Control( p_demux->out, ES_OUT_SET_PCR,
708 p_stream->i_previous_pcr = p_stream->i_pcr;
710 /* The granulepos is the end date of the sample */
711 i_pts = p_stream->i_pcr;
715 /* Convert the granulepos into the next pcr */
716 i_interpolated_pts = p_stream->i_interpolated_pcr;
717 Ogg_UpdatePCR( p_stream, p_oggpacket );
719 /* SPU streams are typically discontinuous, do not mind large gaps */
720 if( p_stream->fmt.i_cat != SPU_ES )
722 if( p_stream->i_pcr >= 0 )
724 /* This is for streams where the granulepos of the header packets
725 * doesn't match these of the data packets (eg. ogg web radios). */
726 if( p_stream->i_previous_pcr == 0 &&
727 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY )
729 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
731 /* Call the pace control */
732 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_stream->i_pcr );
737 if( p_stream->fmt.i_codec != VLC_FOURCC( 'v','o','r','b' ) &&
738 p_stream->fmt.i_codec != VLC_FOURCC( 's','p','x',' ' ) &&
739 p_stream->fmt.i_codec != VLC_FOURCC( 'f','l','a','c' ) &&
740 p_stream->i_pcr >= 0 )
742 p_stream->i_previous_pcr = p_stream->i_pcr;
744 /* The granulepos is the start date of the sample */
745 i_pts = p_stream->i_pcr;
750 /* This stream isn't currently selected so we don't need to decode it,
751 * but we did need to store its pcr as it might be selected later on */
755 if( p_oggpacket->bytes <= 0 )
758 if( !( p_block = block_New( p_demux, p_oggpacket->bytes ) ) ) return;
761 if( i_pts == 0 ) i_pts = 1;
762 else if( i_pts == -1 && i_interpolated_pts == 0 ) i_pts = 1;
763 else if( i_pts == -1 ) i_pts = 0;
765 if( p_stream->fmt.i_cat == AUDIO_ES )
766 p_block->i_dts = p_block->i_pts = i_pts;
767 else if( p_stream->fmt.i_cat == SPU_ES )
769 p_block->i_dts = p_block->i_pts = i_pts;
770 p_block->i_length = 0;
772 else if( p_stream->fmt.i_codec == VLC_FOURCC( 't','h','e','o' ) )
773 p_block->i_dts = p_block->i_pts = i_pts;
774 else if( p_stream->fmt.i_codec == VLC_FOURCC( 'd','r','a','c' ) )
776 ogg_int64_t dts = p_oggpacket->granulepos >> 31;
777 ogg_int64_t delay = (p_oggpacket->granulepos >> 9) & 0x1fff;
779 uint64_t u_pnum = dts + delay;
781 p_block->i_dts = p_stream->i_pcr;
783 /* NB, OggDirac granulepos values are in units of 2*picturerate */
784 if( -1 != p_oggpacket->granulepos )
785 p_block->i_pts = u_pnum * INT64_C(1000000) / p_stream->f_rate / 2;
789 p_block->i_dts = i_pts;
793 if( p_stream->fmt.i_codec != VLC_FOURCC( 'v','o','r','b' ) &&
794 p_stream->fmt.i_codec != VLC_FOURCC( 's','p','x',' ' ) &&
795 p_stream->fmt.i_codec != VLC_FOURCC( 'f','l','a','c' ) &&
796 p_stream->fmt.i_codec != VLC_FOURCC( 't','a','r','k' ) &&
797 p_stream->fmt.i_codec != VLC_FOURCC( 't','h','e','o' ) &&
798 p_stream->fmt.i_codec != VLC_FOURCC( 'c','m','m','l' ) &&
799 p_stream->fmt.i_codec != VLC_FOURCC( 'd','r','a','c' ) &&
800 p_stream->fmt.i_codec != VLC_FOURCC( 'k','a','t','e' ) )
802 /* We remove the header from the packet */
803 i_header_len = (*p_oggpacket->packet & PACKET_LEN_BITS01) >> 6;
804 i_header_len |= (*p_oggpacket->packet & PACKET_LEN_BITS2) << 1;
806 if( p_stream->fmt.i_codec == VLC_FOURCC( 's','u','b','t' ))
808 /* But with subtitles we need to retrieve the duration first */
811 if( i_header_len > 0 && p_oggpacket->bytes >= i_header_len + 1 )
813 for( i = 0, lenbytes = 0; i < i_header_len; i++ )
815 lenbytes = lenbytes << 8;
816 lenbytes += *(p_oggpacket->packet + i_header_len - i);
819 if( p_oggpacket->bytes - 1 - i_header_len > 2 ||
820 ( p_oggpacket->packet[i_header_len + 1] != ' ' &&
821 p_oggpacket->packet[i_header_len + 1] != 0 &&
822 p_oggpacket->packet[i_header_len + 1] != '\n' &&
823 p_oggpacket->packet[i_header_len + 1] != '\r' ) )
825 p_block->i_length = (mtime_t)lenbytes * 1000;
830 if( p_block->i_buffer >= (unsigned int)i_header_len )
831 p_block->i_buffer -= i_header_len;
833 p_block->i_buffer = 0;
836 if( p_stream->fmt.i_codec == VLC_FOURCC( 't','a','r','k' ) )
838 /* FIXME: the biggest hack I've ever done */
839 msg_Warn( p_demux, "tarkin pts: %"PRId64", granule: %"PRId64,
840 p_block->i_pts, p_block->i_dts );
844 memcpy( p_block->p_buffer, p_oggpacket->packet + i_header_len,
845 p_oggpacket->bytes - i_header_len );
847 es_out_Send( p_demux->out, p_stream->p_es, p_block );
850 /****************************************************************************
851 * Ogg_FindLogicalStreams: Find the logical streams embedded in the physical
852 * stream and fill p_ogg.
853 *****************************************************************************
854 * The initial page of a logical stream is marked as a 'bos' page.
855 * Furthermore, the Ogg specification mandates that grouped bitstreams begin
856 * together and all of the initial pages must appear before any data pages.
858 * On success this function returns VLC_SUCCESS.
859 ****************************************************************************/
860 static int Ogg_FindLogicalStreams( demux_t *p_demux )
862 demux_sys_t *p_ogg = p_demux->p_sys ;
863 ogg_packet oggpacket;
867 while( Ogg_ReadPage( p_demux, &oggpage ) == VLC_SUCCESS )
869 if( ogg_page_bos( &oggpage ) )
872 /* All is wonderful in our fine fine little world.
873 * We found the beginning of our first logical stream. */
874 while( ogg_page_bos( &oggpage ) )
876 logical_stream_t *p_stream;
878 p_stream = malloc( sizeof(logical_stream_t) );
882 TAB_APPEND( p_ogg->i_streams, p_ogg->pp_stream, p_stream );
884 memset( p_stream, 0, sizeof(logical_stream_t) );
885 p_stream->p_headers = 0;
886 p_stream->i_secondary_header_packets = 0;
888 es_format_Init( &p_stream->fmt, 0, 0 );
889 es_format_Init( &p_stream->fmt_old, 0, 0 );
891 /* Setup the logical stream */
892 p_stream->i_serial_no = ogg_page_serialno( &oggpage );
893 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
895 /* Extract the initial header from the first page and verify
896 * the codec type of this Ogg bitstream */
897 if( ogg_stream_pagein( &p_stream->os, &oggpage ) < 0 )
899 /* error. stream version mismatch perhaps */
900 msg_Err( p_demux, "error reading first page of "
901 "Ogg bitstream data" );
905 /* FIXME: check return value */
906 ogg_stream_packetpeek( &p_stream->os, &oggpacket );
908 /* Check for Vorbis header */
909 if( oggpacket.bytes >= 7 &&
910 ! memcmp( oggpacket.packet, "\x01vorbis", 7 ) )
912 Ogg_ReadVorbisHeader( p_stream, &oggpacket );
913 msg_Dbg( p_demux, "found vorbis header" );
915 /* Check for Speex header */
916 else if( oggpacket.bytes >= 5 &&
917 ! memcmp( oggpacket.packet, "Speex", 5 ) )
919 Ogg_ReadSpeexHeader( p_stream, &oggpacket );
920 msg_Dbg( p_demux, "found speex header, channels: %i, "
921 "rate: %i, bitrate: %i",
922 p_stream->fmt.audio.i_channels,
923 (int)p_stream->f_rate, p_stream->fmt.i_bitrate );
925 /* Check for Flac header (< version 1.1.1) */
926 else if( oggpacket.bytes >= 4 &&
927 ! memcmp( oggpacket.packet, "fLaC", 4 ) )
929 msg_Dbg( p_demux, "found FLAC header" );
931 /* Grrrr!!!! Did they really have to put all the
932 * important info in the second header packet!!!
933 * (STREAMINFO metadata is in the following packet) */
934 p_stream->b_force_backup = 1;
936 p_stream->fmt.i_cat = AUDIO_ES;
937 p_stream->fmt.i_codec = VLC_FOURCC( 'f','l','a','c' );
939 /* Check for Flac header (>= version 1.1.1) */
940 else if( oggpacket.bytes >= 13 && oggpacket.packet[0] ==0x7F &&
941 ! memcmp( &oggpacket.packet[1], "FLAC", 4 ) &&
942 ! memcmp( &oggpacket.packet[9], "fLaC", 4 ) )
944 int i_packets = ((int)oggpacket.packet[7]) << 8 |
946 msg_Dbg( p_demux, "found FLAC header version %i.%i "
947 "(%i header packets)",
948 oggpacket.packet[5], oggpacket.packet[6],
951 p_stream->b_force_backup = 1;
953 p_stream->fmt.i_cat = AUDIO_ES;
954 p_stream->fmt.i_codec = VLC_FOURCC( 'f','l','a','c' );
955 oggpacket.packet += 13; oggpacket.bytes -= 13;
956 Ogg_ReadFlacHeader( p_demux, p_stream, &oggpacket );
958 /* Check for Theora header */
959 else if( oggpacket.bytes >= 7 &&
960 ! memcmp( oggpacket.packet, "\x80theora", 7 ) )
962 Ogg_ReadTheoraHeader( p_stream, &oggpacket );
965 "found theora header, bitrate: %i, rate: %f",
966 p_stream->fmt.i_bitrate, p_stream->f_rate );
968 /* Check for Dirac header */
969 else if( oggpacket.bytes >= 5 &&
970 ! memcmp( oggpacket.packet, "BBCD\x00", 5 ) )
972 if( Ogg_ReadDiracHeader( p_stream, &oggpacket ) )
973 msg_Dbg( p_demux, "found dirac header" );
976 msg_Warn( p_demux, "found dirac header isn't decodable" );
981 /* Check for Tarkin header */
982 else if( oggpacket.bytes >= 7 &&
983 ! memcmp( &oggpacket.packet[1], "tarkin", 6 ) )
987 msg_Dbg( p_demux, "found tarkin header" );
988 p_stream->fmt.i_cat = VIDEO_ES;
989 p_stream->fmt.i_codec = VLC_FOURCC( 't','a','r','k' );
991 /* Cheat and get additionnal info ;) */
992 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
993 oggpack_adv( &opb, 88 );
994 oggpack_adv( &opb, 104 );
995 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
996 p_stream->f_rate = 2; /* FIXME */
998 "found tarkin header, bitrate: %i, rate: %f",
999 p_stream->fmt.i_bitrate, p_stream->f_rate );
1001 /* Check for Annodex header */
1002 else if( oggpacket.bytes >= 7 &&
1003 ! memcmp( oggpacket.packet, "Annodex", 7 ) )
1005 Ogg_ReadAnnodexHeader( VLC_OBJECT(p_demux), p_stream,
1007 /* kill annodex track */
1011 /* Check for Annodex header */
1012 else if( oggpacket.bytes >= 7 &&
1013 ! memcmp( oggpacket.packet, "AnxData", 7 ) )
1015 Ogg_ReadAnnodexHeader( VLC_OBJECT(p_demux), p_stream,
1018 /* Check for Kate header */
1019 else if( oggpacket.bytes >= 8 &&
1020 ! memcmp( &oggpacket.packet[1], "kate\0\0\0", 7 ) )
1022 Ogg_ReadKateHeader( p_stream, &oggpacket );
1023 msg_Dbg( p_demux, "found kate header" );
1025 else if( oggpacket.bytes >= 142 &&
1026 !memcmp( &oggpacket.packet[1],
1027 "Direct Show Samples embedded in Ogg", 35 ))
1029 /* Old header type */
1031 /* Check for video header (old format) */
1032 if( GetDWLE((oggpacket.packet+96)) == 0x05589f80 &&
1033 oggpacket.bytes >= 184 )
1035 p_stream->fmt.i_cat = VIDEO_ES;
1036 p_stream->fmt.i_codec =
1037 VLC_FOURCC( oggpacket.packet[68],
1038 oggpacket.packet[69],
1039 oggpacket.packet[70],
1040 oggpacket.packet[71] );
1041 msg_Dbg( p_demux, "found video header of type: %.4s",
1042 (char *)&p_stream->fmt.i_codec );
1044 p_stream->fmt.video.i_frame_rate = 10000000;
1045 p_stream->fmt.video.i_frame_rate_base =
1046 GetQWLE((oggpacket.packet+164));
1047 p_stream->f_rate = 10000000.0 /
1048 GetQWLE((oggpacket.packet+164));
1049 p_stream->fmt.video.i_bits_per_pixel =
1050 GetWLE((oggpacket.packet+182));
1051 if( !p_stream->fmt.video.i_bits_per_pixel )
1053 p_stream->fmt.video.i_bits_per_pixel = 24;
1054 p_stream->fmt.video.i_width =
1055 GetDWLE((oggpacket.packet+176));
1056 p_stream->fmt.video.i_height =
1057 GetDWLE((oggpacket.packet+180));
1060 "fps: %f, width:%i; height:%i, bitcount:%i",
1062 p_stream->fmt.video.i_width,
1063 p_stream->fmt.video.i_height,
1064 p_stream->fmt.video.i_bits_per_pixel);
1067 /* Check for audio header (old format) */
1068 else if( GetDWLE((oggpacket.packet+96)) == 0x05589F81 )
1070 unsigned int i_extra_size;
1071 unsigned int i_format_tag;
1073 p_stream->fmt.i_cat = AUDIO_ES;
1075 i_extra_size = GetWLE((oggpacket.packet+140));
1076 if( i_extra_size > 0 && i_extra_size < oggpacket.bytes - 142 )
1078 p_stream->fmt.i_extra = i_extra_size;
1079 p_stream->fmt.p_extra = malloc( i_extra_size );
1080 if( p_stream->fmt.p_extra )
1081 memcpy( p_stream->fmt.p_extra,
1082 oggpacket.packet + 142, i_extra_size );
1084 p_stream->fmt.i_extra = 0;
1087 i_format_tag = GetWLE((oggpacket.packet+124));
1088 p_stream->fmt.audio.i_channels =
1089 GetWLE((oggpacket.packet+126));
1090 p_stream->f_rate = p_stream->fmt.audio.i_rate =
1091 GetDWLE((oggpacket.packet+128));
1092 p_stream->fmt.i_bitrate =
1093 GetDWLE((oggpacket.packet+132)) * 8;
1094 p_stream->fmt.audio.i_blockalign =
1095 GetWLE((oggpacket.packet+136));
1096 p_stream->fmt.audio.i_bitspersample =
1097 GetWLE((oggpacket.packet+138));
1099 wf_tag_to_fourcc( i_format_tag,
1100 &p_stream->fmt.i_codec, 0 );
1102 if( p_stream->fmt.i_codec ==
1103 VLC_FOURCC('u','n','d','f') )
1105 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
1106 ( i_format_tag >> 8 ) & 0xff,
1107 i_format_tag & 0xff );
1110 msg_Dbg( p_demux, "found audio header of type: %.4s",
1111 (char *)&p_stream->fmt.i_codec );
1112 msg_Dbg( p_demux, "audio:0x%4.4x channels:%d %dHz "
1113 "%dbits/sample %dkb/s",
1115 p_stream->fmt.audio.i_channels,
1116 p_stream->fmt.audio.i_rate,
1117 p_stream->fmt.audio.i_bitspersample,
1118 p_stream->fmt.i_bitrate / 1024 );
1123 msg_Dbg( p_demux, "stream %d has an old header "
1124 "but is of an unknown type", p_ogg->i_streams-1 );
1129 else if( (*oggpacket.packet & PACKET_TYPE_BITS ) == PACKET_TYPE_HEADER &&
1130 oggpacket.bytes >= 56+1 )
1132 stream_header_t tmp;
1133 stream_header_t *st = &tmp;
1135 memcpy( st->streamtype, &oggpacket.packet[1+0], 8 );
1136 memcpy( st->subtype, &oggpacket.packet[1+8], 4 );
1137 st->size = GetDWLE( &oggpacket.packet[1+12] );
1138 st->time_unit = GetQWLE( &oggpacket.packet[1+16] );
1139 st->samples_per_unit = GetQWLE( &oggpacket.packet[1+24] );
1140 st->default_len = GetDWLE( &oggpacket.packet[1+32] );
1141 st->buffersize = GetDWLE( &oggpacket.packet[1+36] );
1142 st->bits_per_sample = GetWLE( &oggpacket.packet[1+40] ); // (padding 2)
1144 /* Check for video header (new format) */
1145 if( !strncmp( st->streamtype, "video", 5 ) )
1147 st->sh.video.width = GetDWLE( &oggpacket.packet[1+44] );
1148 st->sh.video.height = GetDWLE( &oggpacket.packet[1+48] );
1150 p_stream->fmt.i_cat = VIDEO_ES;
1152 /* We need to get rid of the header packet */
1153 ogg_stream_packetout( &p_stream->os, &oggpacket );
1155 p_stream->fmt.i_codec =
1156 VLC_FOURCC( st->subtype[0], st->subtype[1],
1157 st->subtype[2], st->subtype[3] );
1158 msg_Dbg( p_demux, "found video header of type: %.4s",
1159 (char *)&p_stream->fmt.i_codec );
1161 p_stream->fmt.video.i_frame_rate = 10000000;
1162 p_stream->fmt.video.i_frame_rate_base = st->time_unit;
1163 if( st->time_unit <= 0 )
1164 st->time_unit = 400000;
1165 p_stream->f_rate = 10000000.0 / st->time_unit;
1166 p_stream->fmt.video.i_bits_per_pixel = st->bits_per_sample;
1167 p_stream->fmt.video.i_width = st->sh.video.width;
1168 p_stream->fmt.video.i_height = st->sh.video.height;
1171 "fps: %f, width:%i; height:%i, bitcount:%i",
1173 p_stream->fmt.video.i_width,
1174 p_stream->fmt.video.i_height,
1175 p_stream->fmt.video.i_bits_per_pixel );
1177 /* Check for audio header (new format) */
1178 else if( !strncmp( st->streamtype, "audio", 5 ) )
1181 unsigned int i_extra_size;
1184 st->sh.audio.channels = GetWLE( &oggpacket.packet[1+44] );
1185 st->sh.audio.blockalign = GetWLE( &oggpacket.packet[1+48] );
1186 st->sh.audio.avgbytespersec = GetDWLE( &oggpacket.packet[1+52] );
1188 p_stream->fmt.i_cat = AUDIO_ES;
1190 /* We need to get rid of the header packet */
1191 ogg_stream_packetout( &p_stream->os, &oggpacket );
1193 i_extra_size = st->size - 56;
1195 if( i_extra_size > 0 &&
1196 i_extra_size < oggpacket.bytes - 1 - 56 )
1198 p_stream->fmt.i_extra = i_extra_size;
1199 p_stream->fmt.p_extra = malloc( p_stream->fmt.i_extra );
1200 if( p_stream->fmt.p_extra )
1201 memcpy( p_stream->fmt.p_extra, st + 1,
1202 p_stream->fmt.i_extra );
1204 p_stream->fmt.i_extra = 0;
1207 memcpy( p_buffer, st->subtype, 4 );
1209 i_format_tag = strtol(p_buffer,NULL,16);
1210 p_stream->fmt.audio.i_channels = st->sh.audio.channels;
1211 if( st->time_unit <= 0 )
1212 st->time_unit = 10000000;
1213 p_stream->f_rate = p_stream->fmt.audio.i_rate = st->samples_per_unit * 10000000 / st->time_unit;
1214 p_stream->fmt.i_bitrate = st->sh.audio.avgbytespersec * 8;
1215 p_stream->fmt.audio.i_blockalign = st->sh.audio.blockalign;
1216 p_stream->fmt.audio.i_bitspersample = st->bits_per_sample;
1218 wf_tag_to_fourcc( i_format_tag,
1219 &p_stream->fmt.i_codec, 0 );
1221 if( p_stream->fmt.i_codec ==
1222 VLC_FOURCC('u','n','d','f') )
1224 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
1225 ( i_format_tag >> 8 ) & 0xff,
1226 i_format_tag & 0xff );
1229 msg_Dbg( p_demux, "found audio header of type: %.4s",
1230 (char *)&p_stream->fmt.i_codec );
1231 msg_Dbg( p_demux, "audio:0x%4.4x channels:%d %dHz "
1232 "%dbits/sample %dkb/s",
1234 p_stream->fmt.audio.i_channels,
1235 p_stream->fmt.audio.i_rate,
1236 p_stream->fmt.audio.i_bitspersample,
1237 p_stream->fmt.i_bitrate / 1024 );
1239 /* Check for text (subtitles) header */
1240 else if( !strncmp(st->streamtype, "text", 4) )
1242 /* We need to get rid of the header packet */
1243 ogg_stream_packetout( &p_stream->os, &oggpacket );
1245 msg_Dbg( p_demux, "found text subtitles header" );
1246 p_stream->fmt.i_cat = SPU_ES;
1247 p_stream->fmt.i_codec = VLC_FOURCC('s','u','b','t');
1248 p_stream->f_rate = 1000; /* granulepos is in millisec */
1252 msg_Dbg( p_demux, "stream %d has a header marker "
1253 "but is of an unknown type", p_ogg->i_streams-1 );
1258 else if( oggpacket.bytes >= 7 &&
1259 ! memcmp( oggpacket.packet, "fishead", 7 ) )
1263 msg_Dbg( p_demux, "stream %d is a skeleton",
1264 p_ogg->i_streams-1 );
1265 /* FIXME: https://trac.videolan.org/vlc/ticket/1412 */
1269 msg_Dbg( p_demux, "stream %d is of unknown type",
1270 p_ogg->i_streams-1 );
1275 if( Ogg_ReadPage( p_demux, &oggpage ) != VLC_SUCCESS )
1276 return VLC_EGENERIC;
1279 /* we'll need to get all headers for all of those streams
1280 that we have to backup headers for */
1282 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1284 if( p_ogg->pp_stream[i_stream]->b_force_backup )
1289 /* This is the first data page, which means we are now finished
1290 * with the initial pages. We just need to store it in the relevant
1292 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1294 if( ogg_stream_pagein( &p_ogg->pp_stream[i_stream]->os,
1297 p_ogg->b_page_waiting = true;
1306 return VLC_EGENERIC;
1309 /****************************************************************************
1310 * Ogg_BeginningOfStream: Look for Beginning of Stream ogg pages and add
1311 * Elementary streams.
1312 ****************************************************************************/
1313 static int Ogg_BeginningOfStream( demux_t *p_demux )
1315 demux_sys_t *p_ogg = p_demux->p_sys ;
1316 logical_stream_t *p_old_stream = p_ogg->p_old_stream;
1319 /* Find the logical streams embedded in the physical stream and
1320 * initialize our p_ogg structure. */
1321 if( Ogg_FindLogicalStreams( p_demux ) != VLC_SUCCESS )
1323 msg_Warn( p_demux, "couldn't find any ogg logical stream" );
1324 return VLC_EGENERIC;
1327 p_ogg->i_bitrate = 0;
1329 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1331 logical_stream_t *p_stream = p_ogg->pp_stream[i_stream];
1333 p_stream->p_es = NULL;
1335 /* Try first to reuse an old ES */
1337 p_old_stream->fmt.i_cat == p_stream->fmt.i_cat &&
1338 p_old_stream->fmt.i_codec == p_stream->fmt.i_codec )
1340 msg_Dbg( p_demux, "will reuse old stream to avoid glitch" );
1342 p_stream->p_es = p_old_stream->p_es;
1343 es_format_Copy( &p_stream->fmt_old, &p_old_stream->fmt );
1345 p_old_stream->p_es = NULL;
1346 p_old_stream = NULL;
1349 if( !p_stream->p_es )
1351 /* Better be safe than sorry when possible with ogm */
1352 if( p_stream->fmt.i_codec == VLC_FOURCC( 'm', 'p', 'g', 'a' ) ||
1353 p_stream->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
1354 p_stream->fmt.b_packetized = false;
1356 p_stream->p_es = es_out_Add( p_demux->out, &p_stream->fmt );
1359 // TODO: something to do here ?
1360 if( p_stream->fmt.i_codec == VLC_FOURCC('c','m','m','l') )
1362 /* Set the CMML stream active */
1363 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_stream->p_es );
1366 p_ogg->i_bitrate += p_stream->fmt.i_bitrate;
1368 p_stream->i_pcr = p_stream->i_previous_pcr =
1369 p_stream->i_interpolated_pcr = -1;
1370 p_stream->b_reinit = false;
1373 if( p_ogg->p_old_stream )
1375 if( p_ogg->p_old_stream->p_es )
1376 msg_Dbg( p_demux, "old stream not reused" );
1377 Ogg_LogicalStreamDelete( p_demux, p_ogg->p_old_stream );
1378 p_ogg->p_old_stream = NULL;
1383 /****************************************************************************
1384 * Ogg_EndOfStream: clean up the ES when an End of Stream is detected.
1385 ****************************************************************************/
1386 static void Ogg_EndOfStream( demux_t *p_demux )
1388 demux_sys_t *p_ogg = p_demux->p_sys ;
1391 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1392 Ogg_LogicalStreamDelete( p_demux, p_ogg->pp_stream[i_stream] );
1393 free( p_ogg->pp_stream );
1396 p_ogg->i_bitrate = 0;
1397 p_ogg->i_streams = 0;
1398 p_ogg->pp_stream = NULL;
1402 * This function delete and release all data associated to a logical_stream_t
1404 static void Ogg_LogicalStreamDelete( demux_t *p_demux, logical_stream_t *p_stream )
1406 if( p_stream->p_es )
1407 es_out_Del( p_demux->out, p_stream->p_es );
1409 ogg_stream_clear( &p_stream->os );
1410 free( p_stream->p_headers );
1412 es_format_Clean( &p_stream->fmt_old );
1413 es_format_Clean( &p_stream->fmt );
1418 * This function check if a we need to reset a decoder in case we are
1421 static bool Ogg_IsVorbisFormatCompatible( const es_format_t *p_new, const es_format_t *p_old )
1427 for( i = 0; i < 3; i++ )
1429 const uint8_t *p_new_extra = ( const uint8_t*)p_new->p_extra + i_new;
1430 const uint8_t *p_old_extra = ( const uint8_t*)p_old->p_extra + i_old;
1432 if( p_new->i_extra < i_new+2 || p_old->i_extra < i_old+2 )
1435 const int i_new_size = GetWBE( &p_new_extra[0] );
1436 const int i_old_size = GetWBE( &p_old_extra[0] );
1438 if( i != 1 ) /* Ignore vorbis comment */
1440 if( i_new_size != i_old_size )
1442 if( memcmp( &p_new_extra[2], &p_old_extra[2], i_new_size ) )
1446 i_new += 2 + i_new_size;
1447 i_old += 2 + i_old_size;
1451 static bool Ogg_LogicalStreamResetEsFormat( demux_t *p_demux, logical_stream_t *p_stream )
1453 bool b_compatible = false;
1454 if( !p_stream->fmt_old.i_cat || !p_stream->fmt_old.i_codec )
1457 /* Only vorbis is supported */
1458 if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) )
1459 b_compatible = Ogg_IsVorbisFormatCompatible( &p_stream->fmt, &p_stream->fmt_old );
1462 msg_Warn( p_demux, "cannot reuse old stream, resetting the decoder" );
1464 return !b_compatible;
1467 static void Ogg_ReadTheoraHeader( logical_stream_t *p_stream,
1468 ogg_packet *p_oggpacket )
1471 int i_fps_numerator;
1472 int i_fps_denominator;
1473 int i_keyframe_frequency_force;
1475 p_stream->fmt.i_cat = VIDEO_ES;
1476 p_stream->fmt.i_codec = VLC_FOURCC( 't','h','e','o' );
1478 /* Signal that we want to keep a backup of the theora
1479 * stream headers. They will be used when switching between
1481 p_stream->b_force_backup = 1;
1483 /* Cheat and get additionnal info ;) */
1484 bs_init( &bitstream, p_oggpacket->packet, p_oggpacket->bytes );
1485 bs_skip( &bitstream, 56 );
1486 bs_read( &bitstream, 8 ); /* major version num */
1487 bs_read( &bitstream, 8 ); /* minor version num */
1488 bs_read( &bitstream, 8 ); /* subminor version num */
1489 bs_read( &bitstream, 16 ) /*<< 4*/; /* width */
1490 bs_read( &bitstream, 16 ) /*<< 4*/; /* height */
1491 bs_read( &bitstream, 24 ); /* frame width */
1492 bs_read( &bitstream, 24 ); /* frame height */
1493 bs_read( &bitstream, 8 ); /* x offset */
1494 bs_read( &bitstream, 8 ); /* y offset */
1496 i_fps_numerator = bs_read( &bitstream, 32 );
1497 i_fps_denominator = bs_read( &bitstream, 32 );
1498 bs_read( &bitstream, 24 ); /* aspect_numerator */
1499 bs_read( &bitstream, 24 ); /* aspect_denominator */
1501 p_stream->fmt.video.i_frame_rate = i_fps_numerator;
1502 p_stream->fmt.video.i_frame_rate_base = i_fps_denominator;
1504 bs_read( &bitstream, 8 ); /* colorspace */
1505 p_stream->fmt.i_bitrate = bs_read( &bitstream, 24 );
1506 bs_read( &bitstream, 6 ); /* quality */
1508 i_keyframe_frequency_force = 1 << bs_read( &bitstream, 5 );
1510 /* granule_shift = i_log( frequency_force -1 ) */
1511 p_stream->i_granule_shift = 0;
1512 i_keyframe_frequency_force--;
1513 while( i_keyframe_frequency_force )
1515 p_stream->i_granule_shift++;
1516 i_keyframe_frequency_force >>= 1;
1519 p_stream->f_rate = ((float)i_fps_numerator) / i_fps_denominator;
1522 static void Ogg_ReadVorbisHeader( logical_stream_t *p_stream,
1523 ogg_packet *p_oggpacket )
1527 p_stream->fmt.i_cat = AUDIO_ES;
1528 p_stream->fmt.i_codec = VLC_FOURCC( 'v','o','r','b' );
1530 /* Signal that we want to keep a backup of the vorbis
1531 * stream headers. They will be used when switching between
1533 p_stream->b_force_backup = 1;
1535 /* Cheat and get additionnal info ;) */
1536 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1537 oggpack_adv( &opb, 88 );
1538 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 8 );
1539 p_stream->f_rate = p_stream->fmt.audio.i_rate =
1540 oggpack_read( &opb, 32 );
1541 oggpack_adv( &opb, 32 );
1542 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
1545 static void Ogg_ReadSpeexHeader( logical_stream_t *p_stream,
1546 ogg_packet *p_oggpacket )
1550 p_stream->fmt.i_cat = AUDIO_ES;
1551 p_stream->fmt.i_codec = VLC_FOURCC( 's','p','x',' ' );
1553 /* Signal that we want to keep a backup of the speex
1554 * stream headers. They will be used when switching between
1556 p_stream->b_force_backup = 1;
1558 /* Cheat and get additionnal info ;) */
1559 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1560 oggpack_adv( &opb, 224 );
1561 oggpack_adv( &opb, 32 ); /* speex_version_id */
1562 oggpack_adv( &opb, 32 ); /* header_size */
1563 p_stream->f_rate = p_stream->fmt.audio.i_rate = oggpack_read( &opb, 32 );
1564 oggpack_adv( &opb, 32 ); /* mode */
1565 oggpack_adv( &opb, 32 ); /* mode_bitstream_version */
1566 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 32 );
1567 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
1570 static void Ogg_ReadFlacHeader( demux_t *p_demux, logical_stream_t *p_stream,
1571 ogg_packet *p_oggpacket )
1573 /* Parse the STREAMINFO metadata */
1576 bs_init( &s, p_oggpacket->packet, p_oggpacket->bytes );
1579 if( bs_read( &s, 7 ) == 0 )
1581 if( bs_read( &s, 24 ) >= 34 /*size STREAMINFO*/ )
1584 p_stream->f_rate = p_stream->fmt.audio.i_rate = bs_read( &s, 20 );
1585 p_stream->fmt.audio.i_channels = bs_read( &s, 3 ) + 1;
1587 msg_Dbg( p_demux, "FLAC header, channels: %i, rate: %i",
1588 p_stream->fmt.audio.i_channels, (int)p_stream->f_rate );
1592 msg_Dbg( p_demux, "FLAC STREAMINFO metadata too short" );
1595 /* Fake this as the last metadata block */
1596 *((uint8_t*)p_oggpacket->packet) |= 0x80;
1600 /* This ain't a STREAMINFO metadata */
1601 msg_Dbg( p_demux, "Invalid FLAC STREAMINFO metadata" );
1605 static void Ogg_ReadKateHeader( logical_stream_t *p_stream,
1606 ogg_packet *p_oggpacket )
1613 p_stream->fmt.i_cat = SPU_ES;
1614 p_stream->fmt.i_codec = VLC_FOURCC( 'k','a','t','e' );
1616 /* Signal that we want to keep a backup of the kate
1617 * stream headers. They will be used when switching between
1619 p_stream->b_force_backup = 1;
1621 /* Cheat and get additionnal info ;) */
1622 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1623 oggpack_adv( &opb, 11*8 ); /* packet type, kate magic, version */
1624 p_stream->i_kate_num_headers = oggpack_read( &opb, 8 );
1625 oggpack_adv( &opb, 3*8 );
1626 p_stream->i_granule_shift = oggpack_read( &opb, 8 );
1627 oggpack_adv( &opb, 8*8 ); /* reserved */
1628 gnum = oggpack_read( &opb, 32 );
1629 gden = oggpack_read( &opb, 32 );
1630 p_stream->f_rate = (double)gnum/gden;
1632 p_stream->fmt.psz_language = malloc(16);
1633 if( p_stream->fmt.psz_language )
1635 for( n = 0; n < 16; ++n )
1636 p_stream->fmt.psz_language[n] = oggpack_read(&opb,8);
1637 p_stream->fmt.psz_language[15] = 0; /* just in case */
1641 for( n = 0; n < 16; ++n )
1642 oggpack_read(&opb,8);
1644 p_stream->fmt.psz_description = malloc(16);
1645 if( p_stream->fmt.psz_description )
1647 for( n = 0; n < 16; ++n )
1648 p_stream->fmt.psz_description[n] = oggpack_read(&opb,8);
1649 p_stream->fmt.psz_description[15] = 0; /* just in case */
1653 for( n = 0; n < 16; ++n )
1654 oggpack_read(&opb,8);
1658 static void Ogg_ReadAnnodexHeader( vlc_object_t *p_this,
1659 logical_stream_t *p_stream,
1660 ogg_packet *p_oggpacket )
1662 if( p_oggpacket->bytes >= 28 &&
1663 !memcmp( p_oggpacket->packet, "Annodex", 7 ) )
1667 uint16_t major_version;
1668 uint16_t minor_version;
1669 uint64_t timebase_numerator;
1670 uint64_t timebase_denominator;
1672 Ogg_ReadTheoraHeader( p_stream, p_oggpacket );
1674 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1675 oggpack_adv( &opb, 8*8 ); /* "Annodex\0" header */
1676 major_version = oggpack_read( &opb, 2*8 ); /* major version */
1677 minor_version = oggpack_read( &opb, 2*8 ); /* minor version */
1678 timebase_numerator = GetQWLE( &p_oggpacket->packet[16] );
1679 timebase_denominator = GetQWLE( &p_oggpacket->packet[24] );
1681 else if( p_oggpacket->bytes >= 42 &&
1682 !memcmp( p_oggpacket->packet, "AnxData", 7 ) )
1684 uint64_t granule_rate_numerator;
1685 uint64_t granule_rate_denominator;
1686 char content_type_string[1024];
1688 /* Read in Annodex header fields */
1690 granule_rate_numerator = GetQWLE( &p_oggpacket->packet[8] );
1691 granule_rate_denominator = GetQWLE( &p_oggpacket->packet[16] );
1692 p_stream->i_secondary_header_packets =
1693 GetDWLE( &p_oggpacket->packet[24] );
1695 /* we are guaranteed that the first header field will be
1696 * the content-type (by the Annodex standard) */
1697 content_type_string[0] = '\0';
1698 if( !strncasecmp( (char*)(&p_oggpacket->packet[28]), "Content-Type: ", 14 ) )
1700 uint8_t *p = memchr( &p_oggpacket->packet[42], '\r',
1701 p_oggpacket->bytes - 1 );
1702 if( p && p[0] == '\r' && p[1] == '\n' )
1703 sscanf( (char*)(&p_oggpacket->packet[42]), "%1024s\r\n",
1704 content_type_string );
1707 msg_Dbg( p_this, "AnxData packet info: %"PRId64" / %"PRId64", %d, ``%s''",
1708 granule_rate_numerator, granule_rate_denominator,
1709 p_stream->i_secondary_header_packets, content_type_string );
1711 p_stream->f_rate = (float) granule_rate_numerator /
1712 (float) granule_rate_denominator;
1714 /* What type of file do we have?
1715 * strcmp is safe to use here because we've extracted
1716 * content_type_string from the stream manually */
1717 if( !strncmp(content_type_string, "audio/x-wav", 11) )
1719 /* n.b. WAVs are unsupported right now */
1720 p_stream->fmt.i_cat = UNKNOWN_ES;
1722 else if( !strncmp(content_type_string, "audio/x-vorbis", 14) )
1724 p_stream->fmt.i_cat = AUDIO_ES;
1725 p_stream->fmt.i_codec = VLC_FOURCC( 'v','o','r','b' );
1727 p_stream->b_force_backup = 1;
1729 else if( !strncmp(content_type_string, "audio/x-speex", 14) )
1731 p_stream->fmt.i_cat = AUDIO_ES;
1732 p_stream->fmt.i_codec = VLC_FOURCC( 's','p','x',' ' );
1734 p_stream->b_force_backup = 1;
1736 else if( !strncmp(content_type_string, "video/x-theora", 14) )
1738 p_stream->fmt.i_cat = VIDEO_ES;
1739 p_stream->fmt.i_codec = VLC_FOURCC( 't','h','e','o' );
1741 p_stream->b_force_backup = 1;
1743 else if( !strncmp(content_type_string, "video/x-xvid", 14) )
1745 p_stream->fmt.i_cat = VIDEO_ES;
1746 p_stream->fmt.i_codec = VLC_FOURCC( 'x','v','i','d' );
1748 p_stream->b_force_backup = 1;
1750 else if( !strncmp(content_type_string, "video/mpeg", 14) )
1752 /* n.b. MPEG streams are unsupported right now */
1753 p_stream->fmt.i_cat = VIDEO_ES;
1754 p_stream->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
1756 else if( !strncmp(content_type_string, "text/x-cmml", 11) )
1758 ogg_stream_packetout( &p_stream->os, p_oggpacket );
1759 p_stream->fmt.i_cat = SPU_ES;
1760 p_stream->fmt.i_codec = VLC_FOURCC( 'c','m','m','l' );
1765 static uint32_t dirac_uint( bs_t *p_bs )
1767 uint32_t u_count = 0, u_value = 0;
1769 while( !bs_eof( p_bs ) && !bs_read( p_bs, 1 ) )
1773 u_value |= bs_read( p_bs, 1 );
1776 return (1<<u_count) - 1 + u_value;
1779 static int dirac_bool( bs_t *p_bs )
1781 return bs_read( p_bs, 1 );
1784 static bool Ogg_ReadDiracHeader( logical_stream_t *p_stream,
1785 ogg_packet *p_oggpacket )
1789 p_stream->i_granule_shift = 22; /* not 32 */
1791 /* Backing up stream headers is not required -- seqhdrs are repeated
1792 * thoughout the stream at suitable decoding start points */
1793 p_stream->b_force_backup = 0;
1795 /* read in useful bits from sequence header */
1796 bs_init( &bs, p_oggpacket->packet, p_oggpacket->bytes );
1797 bs_skip( &bs, 13*8); /* parse_info_header */
1798 dirac_uint( &bs ); /* major_version */
1799 dirac_uint( &bs ); /* minor_version */
1800 dirac_uint( &bs ); /* profile */
1801 dirac_uint( &bs ); /* level */
1803 uint32_t u_video_format = dirac_uint( &bs ); /* index */
1804 if( u_video_format > 20 )
1806 /* don't know how to parse this ogg dirac stream */
1810 if( dirac_bool( &bs ) )
1812 dirac_uint( &bs ); /* frame_width */
1813 dirac_uint( &bs ); /* frame_height */
1816 if( dirac_bool( &bs ) )
1818 dirac_uint( &bs ); /* chroma_format */
1821 if( dirac_bool( &bs ) )
1823 dirac_uint( &bs ); /* scan_format */
1826 static const struct {
1827 uint32_t u_n /* numerator */, u_d /* denominator */;
1828 } p_dirac_frate_tbl[] = { /* table 10.3 */
1829 {1,1}, /* this first value is never used */
1830 {24000,1001}, {24,1}, {25,1}, {30000,1001}, {30,1},
1831 {50,1}, {60000,1001}, {60,1}, {15000,1001}, {25,2},
1833 static const size_t u_dirac_frate_tbl = sizeof(p_dirac_frate_tbl)/sizeof(*p_dirac_frate_tbl);
1835 static const uint32_t pu_dirac_vidfmt_frate[] = { /* table C.1 */
1836 1, 9, 10, 9, 10, 9, 10, 4, 3, 7, 6, 4, 3, 7, 6, 2, 2, 7, 6, 7, 6,
1838 static const size_t u_dirac_vidfmt_frate = sizeof(pu_dirac_vidfmt_frate)/sizeof(*pu_dirac_vidfmt_frate);
1840 uint32_t u_n = p_dirac_frate_tbl[pu_dirac_vidfmt_frate[u_video_format]].u_n;
1841 uint32_t u_d = p_dirac_frate_tbl[pu_dirac_vidfmt_frate[u_video_format]].u_d;
1842 if( dirac_bool( &bs ) )
1844 uint32_t u_frame_rate_index = dirac_uint( &bs );
1845 if( u_frame_rate_index >= u_dirac_frate_tbl )
1847 /* something is wrong with this stream */
1850 u_n = p_dirac_frate_tbl[u_frame_rate_index].u_n;
1851 u_d = p_dirac_frate_tbl[u_frame_rate_index].u_d;
1852 if( u_frame_rate_index == 0 )
1854 u_n = dirac_uint( &bs ); /* frame_rate_numerator */
1855 u_d = dirac_uint( &bs ); /* frame_rate_denominator */
1858 p_stream->f_rate = (float) u_n / u_d;
1860 /* probably is an ogg dirac es */
1861 p_stream->fmt.i_cat = VIDEO_ES;
1862 p_stream->fmt.i_codec = VLC_FOURCC( 'd','r','a','c' );