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"
47 /*****************************************************************************
49 *****************************************************************************/
50 static int Open ( vlc_object_t * );
51 static void Close( vlc_object_t * );
54 set_shortname ( "OGG" )
55 set_description( N_("OGG demuxer" ) )
56 set_category( CAT_INPUT )
57 set_subcategory( SUBCAT_INPUT_DEMUX )
58 set_capability( "demux", 50 )
59 set_callbacks( Open, Close )
64 /*****************************************************************************
65 * Definitions of structures and functions used by this plugins
66 *****************************************************************************/
68 /* OggDS headers for the new header format (used in ogm files) */
73 } stream_header_video_t;
79 ogg_int16_t blockalign;
80 ogg_int32_t avgbytespersec;
81 } stream_header_audio_t;
88 ogg_int32_t size; /* size of the structure */
90 ogg_int64_t time_unit; /* in reference time */
91 ogg_int64_t samples_per_unit;
92 ogg_int32_t default_len; /* in media time */
94 ogg_int32_t buffersize;
95 ogg_int16_t bits_per_sample;
101 stream_header_video_t video;
103 stream_header_audio_t audio;
107 #define OGG_BLOCK_SIZE 4096
109 /* Some defines from OggDS */
110 #define PACKET_TYPE_HEADER 0x01
111 #define PACKET_TYPE_BITS 0x07
112 #define PACKET_LEN_BITS01 0xc0
113 #define PACKET_LEN_BITS2 0x02
114 #define PACKET_IS_SYNCPOINT 0x08
116 /*****************************************************************************
118 *****************************************************************************/
119 static int Demux ( demux_t * );
120 static int Control( demux_t *, int, va_list );
122 /* Bitstream manipulation */
123 static int Ogg_ReadPage ( demux_t *, ogg_page * );
124 static void Ogg_UpdatePCR ( logical_stream_t *, ogg_packet * );
125 static void Ogg_DecodePacket ( demux_t *, logical_stream_t *, ogg_packet * );
127 static int Ogg_BeginningOfStream( demux_t *p_demux );
128 static int Ogg_FindLogicalStreams( demux_t *p_demux );
129 static void Ogg_EndOfStream( demux_t *p_demux );
132 static void Ogg_LogicalStreamDelete( demux_t *p_demux, logical_stream_t *p_stream );
133 static bool Ogg_LogicalStreamResetEsFormat( demux_t *p_demux, logical_stream_t *p_stream );
136 static void Ogg_ExtractMeta( demux_t *p_demux, vlc_fourcc_t i_codec, const uint8_t *p_headers, int i_headers );
138 /* Logical bitstream headers */
139 static void Ogg_ReadTheoraHeader( logical_stream_t *, ogg_packet * );
140 static void Ogg_ReadVorbisHeader( logical_stream_t *, ogg_packet * );
141 static void Ogg_ReadSpeexHeader( logical_stream_t *, ogg_packet * );
142 static void Ogg_ReadKateHeader( logical_stream_t *, ogg_packet * );
143 static void Ogg_ReadFlacHeader( demux_t *, logical_stream_t *, ogg_packet * );
144 static void Ogg_ReadAnnodexHeader( vlc_object_t *, logical_stream_t *, ogg_packet * );
145 static bool Ogg_ReadDiracHeader( logical_stream_t *, ogg_packet * );
147 /*****************************************************************************
148 * Open: initializes ogg demux structures
149 *****************************************************************************/
150 static int Open( vlc_object_t * p_this )
152 demux_t *p_demux = (demux_t *)p_this;
154 const uint8_t *p_peek;
157 /* Check if we are dealing with an ogg stream */
158 if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 ) return VLC_EGENERIC;
159 if( !p_demux->b_force && memcmp( p_peek, "OggS", 4 ) )
164 /* Set exported functions */
165 p_demux->pf_demux = Demux;
166 p_demux->pf_control = Control;
167 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
171 memset( p_sys, 0, sizeof( demux_sys_t ) );
172 p_sys->i_bitrate = 0;
173 p_sys->pp_stream = NULL;
174 p_sys->p_old_stream = NULL;
176 /* Begnning of stream, tell the demux to look for elementary streams. */
180 /* Initialize the Ogg physical bitstream parser */
181 ogg_sync_init( &p_sys->oy );
182 p_sys->b_page_waiting = false;
185 p_sys->p_meta = NULL;
190 /*****************************************************************************
191 * Close: frees unused data
192 *****************************************************************************/
193 static void Close( vlc_object_t *p_this )
195 demux_t *p_demux = (demux_t *)p_this;
196 demux_sys_t *p_sys = p_demux->p_sys ;
198 /* Cleanup the bitstream parser */
199 ogg_sync_clear( &p_sys->oy );
201 Ogg_EndOfStream( p_demux );
203 if( p_sys->p_old_stream )
204 Ogg_LogicalStreamDelete( p_demux, p_sys->p_old_stream );
209 /*****************************************************************************
210 * Demux: reads and demuxes data packets
211 *****************************************************************************
212 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
213 *****************************************************************************/
214 static int Demux( demux_t * p_demux )
216 demux_sys_t *p_sys = p_demux->p_sys;
218 ogg_packet oggpacket;
222 if( p_sys->i_eos == p_sys->i_streams )
226 msg_Dbg( p_demux, "end of a group of logical streams" );
227 /* We keep the ES to try reusing it in Ogg_BeginningOfStream
228 * only 1 ES is supported (common case for ogg web radio) */
229 if( p_sys->i_streams == 1 )
231 p_sys->p_old_stream = p_sys->pp_stream[0];
232 TAB_CLEAN( p_sys->i_streams, p_sys->pp_stream );
234 Ogg_EndOfStream( p_demux );
238 if( Ogg_BeginningOfStream( p_demux ) != VLC_SUCCESS )
241 msg_Dbg( p_demux, "beginning of a group of logical streams" );
242 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
246 * The first data page of a physical stream is stored in the relevant logical stream
247 * in Ogg_FindLogicalStreams. Therefore, we must not read a page and only update the
248 * stream it belongs to if we haven't processed this first page yet. If we do, we
249 * will only process that first page whenever we find the second page for this stream.
250 * While this is fine for Vorbis and Theora, which are continuous codecs, which means
251 * the second page will arrive real quick, this is not fine for Kate, whose second
252 * data page will typically arrive much later.
253 * This means it is now possible to seek right at the start of a stream where the last
254 * logical stream is Kate, without having to wait for the second data page to unblock
255 * the first one, which is the one that triggers the 'no more headers to backup' code.
256 * And, as we all know, seeking without having backed up all headers is bad, since the
257 * codec will fail to initialize if it's missing its headers.
259 if( !p_sys->b_page_waiting)
262 * Demux an ogg page from the stream
264 if( Ogg_ReadPage( p_demux, &oggpage ) != VLC_SUCCESS )
267 /* Test for End of Stream */
268 if( ogg_page_eos( &oggpage ) )
273 for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
275 logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
277 /* if we've just pulled page, look for the right logical stream */
278 if( !p_sys->b_page_waiting )
280 if( p_sys->i_streams == 1 &&
281 ogg_page_serialno( &oggpage ) != p_stream->os.serialno )
283 msg_Err( p_demux, "Broken Ogg stream (serialno) mismatch" );
284 ogg_stream_reset_serialno( &p_stream->os, ogg_page_serialno( &oggpage ) );
286 p_stream->b_reinit = true;
287 p_stream->i_pcr = -1;
288 p_stream->i_interpolated_pcr = -1;
289 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
292 if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
296 while( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
298 /* Read info from any secondary header packets, if there are any */
299 if( p_stream->i_secondary_header_packets > 0 )
301 if( p_stream->fmt.i_codec == VLC_CODEC_THEORA &&
302 oggpacket.bytes >= 7 &&
303 ! memcmp( oggpacket.packet, "\x80theora", 7 ) )
305 Ogg_ReadTheoraHeader( p_stream, &oggpacket );
306 p_stream->i_secondary_header_packets = 0;
308 else if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS &&
309 oggpacket.bytes >= 7 &&
310 ! memcmp( oggpacket.packet, "\x01vorbis", 7 ) )
312 Ogg_ReadVorbisHeader( p_stream, &oggpacket );
313 p_stream->i_secondary_header_packets = 0;
315 else if( p_stream->fmt.i_codec == VLC_CODEC_CMML )
317 p_stream->i_secondary_header_packets = 0;
321 if( p_stream->b_reinit )
323 /* If synchro is re-initialized we need to drop all the packets
324 * until we find a new dated one. */
325 Ogg_UpdatePCR( p_stream, &oggpacket );
327 if( p_stream->i_pcr >= 0 )
329 p_stream->b_reinit = false;
333 p_stream->i_interpolated_pcr = -1;
337 /* An Ogg/vorbis packet contains an end date granulepos */
338 if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS ||
339 p_stream->fmt.i_codec == VLC_CODEC_SPEEX ||
340 p_stream->fmt.i_codec == VLC_CODEC_FLAC )
342 if( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
344 Ogg_DecodePacket( p_demux, p_stream, &oggpacket );
348 es_out_Control( p_demux->out, ES_OUT_SET_PCR,
349 VLC_TS_0 + p_stream->i_pcr );
355 Ogg_DecodePacket( p_demux, p_stream, &oggpacket );
358 if( !p_sys->b_page_waiting )
362 /* if a page was waiting, it's now processed */
363 p_sys->b_page_waiting = false;
366 for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
368 logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
370 if( p_stream->fmt.i_cat == SPU_ES )
372 if( p_stream->i_interpolated_pcr < 0 )
375 if( p_sys->i_pcr < 0 || p_stream->i_interpolated_pcr < p_sys->i_pcr )
376 p_sys->i_pcr = p_stream->i_interpolated_pcr;
379 if( p_sys->i_pcr >= 0 )
380 es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
385 /*****************************************************************************
387 *****************************************************************************/
388 static int Control( demux_t *p_demux, int i_query, va_list args )
390 demux_sys_t *p_sys = p_demux->p_sys;
399 p_meta = (vlc_meta_t *)va_arg( args, vlc_meta_t* );
401 vlc_meta_Merge( p_meta, p_sys->p_meta );
404 case DEMUX_HAS_UNSUPPORTED_META:
405 pb_bool = (bool*)va_arg( args, bool* );
410 pi64 = (int64_t*)va_arg( args, int64_t * );
411 *pi64 = p_sys->i_pcr;
417 case DEMUX_SET_POSITION:
418 /* forbid seeking if we haven't initialized all logical bitstreams yet;
419 if we allowed, some headers would not get backed up and decoder init
420 would fail, making that logical stream unusable */
421 if( p_sys->i_bos > 0 )
426 for( i = 0; i < p_sys->i_streams; i++ )
428 logical_stream_t *p_stream = p_sys->pp_stream[i];
430 /* we'll trash all the data until we find the next pcr */
431 p_stream->b_reinit = true;
432 p_stream->i_pcr = -1;
433 p_stream->i_interpolated_pcr = -1;
434 ogg_stream_reset( &p_stream->os );
436 ogg_sync_reset( &p_sys->oy );
437 /* XXX The break/return is missing on purpose as
438 * demux_vaControlHelper will do the last part of the job */
441 return demux_vaControlHelper( p_demux->s, 0, -1, p_sys->i_bitrate,
446 /****************************************************************************
447 * Ogg_ReadPage: Read a full Ogg page from the physical bitstream.
448 ****************************************************************************
449 * Returns VLC_SUCCESS if a page has been read. An error might happen if we
450 * are at the end of stream.
451 ****************************************************************************/
452 static int Ogg_ReadPage( demux_t *p_demux, ogg_page *p_oggpage )
454 demux_sys_t *p_ogg = p_demux->p_sys ;
458 while( ogg_sync_pageout( &p_ogg->oy, p_oggpage ) != 1 )
460 p_buffer = ogg_sync_buffer( &p_ogg->oy, OGG_BLOCK_SIZE );
462 i_read = stream_Read( p_demux->s, p_buffer, OGG_BLOCK_SIZE );
466 ogg_sync_wrote( &p_ogg->oy, i_read );
472 /****************************************************************************
473 * Ogg_UpdatePCR: update the PCR (90kHz program clock reference) for the
475 ****************************************************************************/
476 static void Ogg_UpdatePCR( logical_stream_t *p_stream,
477 ogg_packet *p_oggpacket )
479 /* Convert the granulepos into a pcr */
480 if( p_oggpacket->granulepos >= 0 )
482 if( p_stream->fmt.i_codec == VLC_CODEC_THEORA ||
483 p_stream->fmt.i_codec == VLC_CODEC_KATE )
485 ogg_int64_t iframe = p_oggpacket->granulepos >>
486 p_stream->i_granule_shift;
487 ogg_int64_t pframe = p_oggpacket->granulepos -
488 ( iframe << p_stream->i_granule_shift );
490 p_stream->i_pcr = ( iframe + pframe - p_stream->i_keyframe_offset )
491 * INT64_C(1000000) / p_stream->f_rate;
493 else if( p_stream->fmt.i_codec == VLC_CODEC_DIRAC )
495 ogg_int64_t i_dts = p_oggpacket->granulepos >> 31;
496 /* NB, OggDirac granulepos values are in units of 2*picturerate */
497 p_stream->i_pcr = (i_dts/2) * INT64_C(1000000) / p_stream->f_rate;
501 p_stream->i_pcr = p_oggpacket->granulepos * INT64_C(1000000)
505 p_stream->i_pcr += 1;
506 p_stream->i_interpolated_pcr = p_stream->i_pcr;
510 p_stream->i_pcr = -1;
512 /* no granulepos available, try to interpolate the pcr.
513 * If we can't then don't touch the old value. */
514 if( p_stream->fmt.i_cat == VIDEO_ES )
515 /* 1 frame per packet */
516 p_stream->i_interpolated_pcr += (INT64_C(1000000) / p_stream->f_rate);
517 else if( p_stream->fmt.i_bitrate )
518 p_stream->i_interpolated_pcr +=
519 ( p_oggpacket->bytes * INT64_C(1000000) /
520 p_stream->fmt.i_bitrate / 8 );
524 /****************************************************************************
525 * Ogg_DecodePacket: Decode an Ogg packet.
526 ****************************************************************************/
527 static void Ogg_DecodePacket( demux_t *p_demux,
528 logical_stream_t *p_stream,
529 ogg_packet *p_oggpacket )
533 int i_header_len = 0;
534 mtime_t i_pts = -1, i_interpolated_pts;
535 demux_sys_t *p_ogg = p_demux->p_sys;
538 if( !p_oggpacket->bytes )
540 msg_Dbg( p_demux, "discarding 0 sized packet" );
544 if( p_oggpacket->bytes >= 7 &&
545 ! memcmp ( p_oggpacket->packet, "Annodex", 7 ) )
547 /* it's an Annodex packet -- skip it (do nothing) */
550 else if( p_oggpacket->bytes >= 7 &&
551 ! memcmp ( p_oggpacket->packet, "AnxData", 7 ) )
553 /* it's an AnxData packet -- skip it (do nothing) */
557 if( p_stream->fmt.i_codec == VLC_CODEC_SUBT &&
558 p_oggpacket->packet[0] & PACKET_TYPE_BITS ) return;
560 /* Check the ES is selected */
561 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE,
562 p_stream->p_es, &b_selected );
564 if( p_stream->b_force_backup )
567 p_stream->i_packets_backup++;
568 switch( p_stream->fmt.i_codec )
570 case VLC_CODEC_VORBIS:
571 case VLC_CODEC_SPEEX:
572 case VLC_CODEC_THEORA:
573 if( p_stream->i_packets_backup == 3 ) p_stream->b_force_backup = 0;
578 if( !p_stream->fmt.audio.i_rate && p_stream->i_packets_backup == 2 )
580 Ogg_ReadFlacHeader( p_demux, p_stream, p_oggpacket );
581 p_stream->b_force_backup = 0;
583 else if( p_stream->fmt.audio.i_rate )
585 p_stream->b_force_backup = 0;
586 if( p_oggpacket->bytes >= 9 )
588 p_oggpacket->packet += 9;
589 p_oggpacket->bytes -= 9;
596 if( p_stream->i_packets_backup == p_stream->i_kate_num_headers ) p_stream->b_force_backup = 0;
601 p_stream->b_force_backup = 0;
606 /* Backup the ogg packet (likely an header packet) */
609 void *p_org = p_stream->p_headers;
610 p_stream->i_headers += p_oggpacket->bytes;
611 p_stream->p_headers = realloc( p_stream->p_headers, p_stream->i_headers );
612 if( p_stream->p_headers )
614 memcpy( (unsigned char *)p_stream->p_headers + p_stream->i_headers - p_oggpacket->bytes,
615 p_oggpacket->packet, p_stream->i_headers );
619 p_stream->i_headers = 0;
620 p_stream->p_headers = NULL;
624 else if( xiph_AppendHeaders( &p_stream->i_headers, &p_stream->p_headers,
625 p_oggpacket->bytes, p_oggpacket->packet ) )
627 p_stream->i_headers = 0;
628 p_stream->p_headers = NULL;
630 if( p_stream->i_headers > 0 )
632 if( !p_stream->b_force_backup )
634 /* Last header received, commit changes */
635 free( p_stream->fmt.p_extra );
637 p_stream->fmt.i_extra = p_stream->i_headers;
638 p_stream->fmt.p_extra = malloc( p_stream->i_headers );
639 if( p_stream->fmt.p_extra )
640 memcpy( p_stream->fmt.p_extra, p_stream->p_headers,
641 p_stream->i_headers );
643 p_stream->fmt.i_extra = 0;
645 if( Ogg_LogicalStreamResetEsFormat( p_demux, p_stream ) )
646 es_out_Control( p_demux->out, ES_OUT_SET_ES_FMT,
647 p_stream->p_es, &p_stream->fmt );
649 if( p_stream->i_headers > 0 )
650 Ogg_ExtractMeta( p_demux, p_stream->fmt.i_codec,
651 p_stream->p_headers, p_stream->i_headers );
653 /* we're not at BOS anymore for this logical stream */
658 b_selected = false; /* Discard the header packet */
661 /* Convert the pcr into a pts */
662 if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS ||
663 p_stream->fmt.i_codec == VLC_CODEC_SPEEX ||
664 p_stream->fmt.i_codec == VLC_CODEC_FLAC )
666 if( p_stream->i_pcr >= 0 )
668 /* This is for streams where the granulepos of the header packets
669 * doesn't match these of the data packets (eg. ogg web radios). */
670 if( p_stream->i_previous_pcr == 0 &&
671 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY )
673 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
675 /* Call the pace control */
676 es_out_Control( p_demux->out, ES_OUT_SET_PCR,
677 VLC_TS_0 + p_stream->i_pcr );
680 p_stream->i_previous_pcr = p_stream->i_pcr;
682 /* The granulepos is the end date of the sample */
683 i_pts = p_stream->i_pcr;
687 /* Convert the granulepos into the next pcr */
688 i_interpolated_pts = p_stream->i_interpolated_pcr;
689 Ogg_UpdatePCR( p_stream, p_oggpacket );
691 /* SPU streams are typically discontinuous, do not mind large gaps */
692 if( p_stream->fmt.i_cat != SPU_ES )
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, VLC_TS_0 + p_stream->i_pcr );
709 if( p_stream->fmt.i_codec != VLC_CODEC_VORBIS &&
710 p_stream->fmt.i_codec != VLC_CODEC_SPEEX &&
711 p_stream->fmt.i_codec != VLC_CODEC_FLAC &&
712 p_stream->i_pcr >= 0 )
714 p_stream->i_previous_pcr = p_stream->i_pcr;
716 /* The granulepos is the start date of the sample */
717 i_pts = p_stream->i_pcr;
722 /* This stream isn't currently selected so we don't need to decode it,
723 * but we did need to store its pcr as it might be selected later on */
727 if( p_oggpacket->bytes <= 0 )
730 if( !( p_block = block_New( p_demux, p_oggpacket->bytes ) ) ) return;
733 if( i_pts == 0 ) i_pts = VLC_TS_0;
734 else if( i_pts == -1 && i_interpolated_pts == 0 ) i_pts = VLC_TS_0;
735 else if( i_pts == -1 ) i_pts = VLC_TS_INVALID;
737 if( p_stream->fmt.i_cat == AUDIO_ES )
738 p_block->i_dts = p_block->i_pts = i_pts;
739 else if( p_stream->fmt.i_cat == SPU_ES )
741 p_block->i_dts = p_block->i_pts = i_pts;
742 p_block->i_length = 0;
744 else if( p_stream->fmt.i_codec == VLC_CODEC_THEORA )
746 p_block->i_dts = p_block->i_pts = i_pts;
747 if( (p_oggpacket->granulepos & ((1<<p_stream->i_granule_shift)-1)) == 0 )
749 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
752 else if( p_stream->fmt.i_codec == VLC_CODEC_DIRAC )
754 ogg_int64_t dts = p_oggpacket->granulepos >> 31;
755 ogg_int64_t delay = (p_oggpacket->granulepos >> 9) & 0x1fff;
757 uint64_t u_pnum = dts + delay;
759 p_block->i_dts = p_stream->i_pcr;
760 p_block->i_pts = VLC_TS_INVALID;
761 /* NB, OggDirac granulepos values are in units of 2*picturerate */
762 if( -1 != p_oggpacket->granulepos )
763 p_block->i_pts = u_pnum * INT64_C(1000000) / p_stream->f_rate / 2;
767 p_block->i_dts = i_pts;
768 p_block->i_pts = VLC_TS_INVALID;
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->fmt.i_codec != VLC_CODEC_TARKIN &&
775 p_stream->fmt.i_codec != VLC_CODEC_THEORA &&
776 p_stream->fmt.i_codec != VLC_CODEC_CMML &&
777 p_stream->fmt.i_codec != VLC_CODEC_DIRAC &&
778 p_stream->fmt.i_codec != VLC_CODEC_KATE )
780 /* We remove the header from the packet */
781 i_header_len = (*p_oggpacket->packet & PACKET_LEN_BITS01) >> 6;
782 i_header_len |= (*p_oggpacket->packet & PACKET_LEN_BITS2) << 1;
784 if( p_stream->fmt.i_codec == VLC_CODEC_SUBT)
786 /* But with subtitles we need to retrieve the duration first */
789 if( i_header_len > 0 && p_oggpacket->bytes >= i_header_len + 1 )
791 for( i = 0, lenbytes = 0; i < i_header_len; i++ )
793 lenbytes = lenbytes << 8;
794 lenbytes += *(p_oggpacket->packet + i_header_len - i);
797 if( p_oggpacket->bytes - 1 - i_header_len > 2 ||
798 ( p_oggpacket->packet[i_header_len + 1] != ' ' &&
799 p_oggpacket->packet[i_header_len + 1] != 0 &&
800 p_oggpacket->packet[i_header_len + 1] != '\n' &&
801 p_oggpacket->packet[i_header_len + 1] != '\r' ) )
803 p_block->i_length = (mtime_t)lenbytes * 1000;
808 if( p_block->i_buffer >= (unsigned int)i_header_len )
809 p_block->i_buffer -= i_header_len;
811 p_block->i_buffer = 0;
814 if( p_stream->fmt.i_codec == VLC_CODEC_TARKIN )
816 /* FIXME: the biggest hack I've ever done */
817 msg_Warn( p_demux, "tarkin pts: %"PRId64", granule: %"PRId64,
818 p_block->i_pts, p_block->i_dts );
822 memcpy( p_block->p_buffer, p_oggpacket->packet + i_header_len,
823 p_oggpacket->bytes - i_header_len );
825 es_out_Send( p_demux->out, p_stream->p_es, p_block );
828 /****************************************************************************
829 * Ogg_FindLogicalStreams: Find the logical streams embedded in the physical
830 * stream and fill p_ogg.
831 *****************************************************************************
832 * The initial page of a logical stream is marked as a 'bos' page.
833 * Furthermore, the Ogg specification mandates that grouped bitstreams begin
834 * together and all of the initial pages must appear before any data pages.
836 * On success this function returns VLC_SUCCESS.
837 ****************************************************************************/
838 static int Ogg_FindLogicalStreams( demux_t *p_demux )
840 demux_sys_t *p_ogg = p_demux->p_sys ;
841 ogg_packet oggpacket;
845 while( Ogg_ReadPage( p_demux, &oggpage ) == VLC_SUCCESS )
847 if( ogg_page_bos( &oggpage ) )
850 /* All is wonderful in our fine fine little world.
851 * We found the beginning of our first logical stream. */
852 while( ogg_page_bos( &oggpage ) )
854 logical_stream_t *p_stream;
856 p_stream = malloc( sizeof(logical_stream_t) );
860 TAB_APPEND( p_ogg->i_streams, p_ogg->pp_stream, p_stream );
862 memset( p_stream, 0, sizeof(logical_stream_t) );
863 p_stream->p_headers = 0;
864 p_stream->i_secondary_header_packets = 0;
866 p_stream->i_keyframe_offset = 0;
868 es_format_Init( &p_stream->fmt, 0, 0 );
869 es_format_Init( &p_stream->fmt_old, 0, 0 );
871 /* Setup the logical stream */
872 p_stream->i_serial_no = ogg_page_serialno( &oggpage );
873 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
875 /* Extract the initial header from the first page and verify
876 * the codec type of this Ogg bitstream */
877 if( ogg_stream_pagein( &p_stream->os, &oggpage ) < 0 )
879 /* error. stream version mismatch perhaps */
880 msg_Err( p_demux, "error reading first page of "
881 "Ogg bitstream data" );
885 /* FIXME: check return value */
886 ogg_stream_packetpeek( &p_stream->os, &oggpacket );
888 /* Check for Vorbis header */
889 if( oggpacket.bytes >= 7 &&
890 ! memcmp( oggpacket.packet, "\x01vorbis", 7 ) )
892 Ogg_ReadVorbisHeader( p_stream, &oggpacket );
893 msg_Dbg( p_demux, "found vorbis header" );
895 /* Check for Speex header */
896 else if( oggpacket.bytes >= 5 &&
897 ! memcmp( oggpacket.packet, "Speex", 5 ) )
899 Ogg_ReadSpeexHeader( p_stream, &oggpacket );
900 msg_Dbg( p_demux, "found speex header, channels: %i, "
901 "rate: %i, bitrate: %i",
902 p_stream->fmt.audio.i_channels,
903 (int)p_stream->f_rate, p_stream->fmt.i_bitrate );
905 /* Check for Flac header (< version 1.1.1) */
906 else if( oggpacket.bytes >= 4 &&
907 ! memcmp( oggpacket.packet, "fLaC", 4 ) )
909 msg_Dbg( p_demux, "found FLAC header" );
911 /* Grrrr!!!! Did they really have to put all the
912 * important info in the second header packet!!!
913 * (STREAMINFO metadata is in the following packet) */
914 p_stream->b_force_backup = 1;
916 p_stream->fmt.i_cat = AUDIO_ES;
917 p_stream->fmt.i_codec = VLC_CODEC_FLAC;
919 /* Check for Flac header (>= version 1.1.1) */
920 else if( oggpacket.bytes >= 13 && oggpacket.packet[0] ==0x7F &&
921 ! memcmp( &oggpacket.packet[1], "FLAC", 4 ) &&
922 ! memcmp( &oggpacket.packet[9], "fLaC", 4 ) )
924 int i_packets = ((int)oggpacket.packet[7]) << 8 |
926 msg_Dbg( p_demux, "found FLAC header version %i.%i "
927 "(%i header packets)",
928 oggpacket.packet[5], oggpacket.packet[6],
931 p_stream->b_force_backup = 1;
933 p_stream->fmt.i_cat = AUDIO_ES;
934 p_stream->fmt.i_codec = VLC_CODEC_FLAC;
935 oggpacket.packet += 13; oggpacket.bytes -= 13;
936 Ogg_ReadFlacHeader( p_demux, p_stream, &oggpacket );
938 /* Check for Theora header */
939 else if( oggpacket.bytes >= 7 &&
940 ! memcmp( oggpacket.packet, "\x80theora", 7 ) )
942 Ogg_ReadTheoraHeader( p_stream, &oggpacket );
945 "found theora header, bitrate: %i, rate: %f",
946 p_stream->fmt.i_bitrate, p_stream->f_rate );
948 /* Check for Dirac header */
949 else if( ( oggpacket.bytes >= 5 &&
950 ! memcmp( oggpacket.packet, "BBCD\x00", 5 ) ) ||
951 ( oggpacket.bytes >= 9 &&
952 ! memcmp( oggpacket.packet, "KW-DIRAC\x00", 9 ) ) )
954 if( Ogg_ReadDiracHeader( p_stream, &oggpacket ) )
955 msg_Dbg( p_demux, "found dirac header" );
958 msg_Warn( p_demux, "found dirac header isn't decodable" );
963 /* Check for Tarkin header */
964 else if( oggpacket.bytes >= 7 &&
965 ! memcmp( &oggpacket.packet[1], "tarkin", 6 ) )
969 msg_Dbg( p_demux, "found tarkin header" );
970 p_stream->fmt.i_cat = VIDEO_ES;
971 p_stream->fmt.i_codec = VLC_CODEC_TARKIN;
973 /* Cheat and get additionnal info ;) */
974 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
975 oggpack_adv( &opb, 88 );
976 oggpack_adv( &opb, 104 );
977 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
978 p_stream->f_rate = 2; /* FIXME */
980 "found tarkin header, bitrate: %i, rate: %f",
981 p_stream->fmt.i_bitrate, p_stream->f_rate );
983 /* Check for Annodex header */
984 else if( oggpacket.bytes >= 7 &&
985 ! memcmp( oggpacket.packet, "Annodex", 7 ) )
987 Ogg_ReadAnnodexHeader( VLC_OBJECT(p_demux), p_stream,
989 /* kill annodex track */
993 /* Check for Annodex header */
994 else if( oggpacket.bytes >= 7 &&
995 ! memcmp( oggpacket.packet, "AnxData", 7 ) )
997 Ogg_ReadAnnodexHeader( VLC_OBJECT(p_demux), p_stream,
1000 /* Check for Kate header */
1001 else if( oggpacket.bytes >= 8 &&
1002 ! memcmp( &oggpacket.packet[1], "kate\0\0\0", 7 ) )
1004 Ogg_ReadKateHeader( p_stream, &oggpacket );
1005 msg_Dbg( p_demux, "found kate header" );
1007 else if( oggpacket.bytes >= 142 &&
1008 !memcmp( &oggpacket.packet[1],
1009 "Direct Show Samples embedded in Ogg", 35 ))
1011 /* Old header type */
1013 /* Check for video header (old format) */
1014 if( GetDWLE((oggpacket.packet+96)) == 0x05589f80 &&
1015 oggpacket.bytes >= 184 )
1017 p_stream->fmt.i_cat = VIDEO_ES;
1018 p_stream->fmt.i_codec =
1019 VLC_FOURCC( oggpacket.packet[68],
1020 oggpacket.packet[69],
1021 oggpacket.packet[70],
1022 oggpacket.packet[71] );
1023 msg_Dbg( p_demux, "found video header of type: %.4s",
1024 (char *)&p_stream->fmt.i_codec );
1026 p_stream->fmt.video.i_frame_rate = 10000000;
1027 p_stream->fmt.video.i_frame_rate_base =
1028 GetQWLE((oggpacket.packet+164));
1029 p_stream->f_rate = 10000000.0 /
1030 GetQWLE((oggpacket.packet+164));
1031 p_stream->fmt.video.i_bits_per_pixel =
1032 GetWLE((oggpacket.packet+182));
1033 if( !p_stream->fmt.video.i_bits_per_pixel )
1035 p_stream->fmt.video.i_bits_per_pixel = 24;
1036 p_stream->fmt.video.i_width =
1037 GetDWLE((oggpacket.packet+176));
1038 p_stream->fmt.video.i_height =
1039 GetDWLE((oggpacket.packet+180));
1042 "fps: %f, width:%i; height:%i, bitcount:%i",
1044 p_stream->fmt.video.i_width,
1045 p_stream->fmt.video.i_height,
1046 p_stream->fmt.video.i_bits_per_pixel);
1049 /* Check for audio header (old format) */
1050 else if( GetDWLE((oggpacket.packet+96)) == 0x05589F81 )
1053 unsigned int i_format_tag;
1055 p_stream->fmt.i_cat = AUDIO_ES;
1057 i_extra_size = GetWLE((oggpacket.packet+140));
1058 if( i_extra_size > 0 && i_extra_size < oggpacket.bytes - 142 )
1060 p_stream->fmt.i_extra = i_extra_size;
1061 p_stream->fmt.p_extra = malloc( i_extra_size );
1062 if( p_stream->fmt.p_extra )
1063 memcpy( p_stream->fmt.p_extra,
1064 oggpacket.packet + 142, i_extra_size );
1066 p_stream->fmt.i_extra = 0;
1069 i_format_tag = GetWLE((oggpacket.packet+124));
1070 p_stream->fmt.audio.i_channels =
1071 GetWLE((oggpacket.packet+126));
1072 p_stream->f_rate = p_stream->fmt.audio.i_rate =
1073 GetDWLE((oggpacket.packet+128));
1074 p_stream->fmt.i_bitrate =
1075 GetDWLE((oggpacket.packet+132)) * 8;
1076 p_stream->fmt.audio.i_blockalign =
1077 GetWLE((oggpacket.packet+136));
1078 p_stream->fmt.audio.i_bitspersample =
1079 GetWLE((oggpacket.packet+138));
1081 wf_tag_to_fourcc( i_format_tag,
1082 &p_stream->fmt.i_codec, 0 );
1084 if( p_stream->fmt.i_codec ==
1085 VLC_FOURCC('u','n','d','f') )
1087 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
1088 ( i_format_tag >> 8 ) & 0xff,
1089 i_format_tag & 0xff );
1092 msg_Dbg( p_demux, "found audio header of type: %.4s",
1093 (char *)&p_stream->fmt.i_codec );
1094 msg_Dbg( p_demux, "audio:0x%4.4x channels:%d %dHz "
1095 "%dbits/sample %dkb/s",
1097 p_stream->fmt.audio.i_channels,
1098 p_stream->fmt.audio.i_rate,
1099 p_stream->fmt.audio.i_bitspersample,
1100 p_stream->fmt.i_bitrate / 1024 );
1105 msg_Dbg( p_demux, "stream %d has an old header "
1106 "but is of an unknown type", p_ogg->i_streams-1 );
1111 else if( (*oggpacket.packet & PACKET_TYPE_BITS ) == PACKET_TYPE_HEADER &&
1112 oggpacket.bytes >= 56+1 )
1114 stream_header_t tmp;
1115 stream_header_t *st = &tmp;
1117 memcpy( st->streamtype, &oggpacket.packet[1+0], 8 );
1118 memcpy( st->subtype, &oggpacket.packet[1+8], 4 );
1119 st->size = GetDWLE( &oggpacket.packet[1+12] );
1120 st->time_unit = GetQWLE( &oggpacket.packet[1+16] );
1121 st->samples_per_unit = GetQWLE( &oggpacket.packet[1+24] );
1122 st->default_len = GetDWLE( &oggpacket.packet[1+32] );
1123 st->buffersize = GetDWLE( &oggpacket.packet[1+36] );
1124 st->bits_per_sample = GetWLE( &oggpacket.packet[1+40] ); // (padding 2)
1126 /* Check for video header (new format) */
1127 if( !strncmp( st->streamtype, "video", 5 ) )
1129 st->sh.video.width = GetDWLE( &oggpacket.packet[1+44] );
1130 st->sh.video.height = GetDWLE( &oggpacket.packet[1+48] );
1132 p_stream->fmt.i_cat = VIDEO_ES;
1134 /* We need to get rid of the header packet */
1135 ogg_stream_packetout( &p_stream->os, &oggpacket );
1137 p_stream->fmt.i_codec =
1138 VLC_FOURCC( st->subtype[0], st->subtype[1],
1139 st->subtype[2], st->subtype[3] );
1140 msg_Dbg( p_demux, "found video header of type: %.4s",
1141 (char *)&p_stream->fmt.i_codec );
1143 p_stream->fmt.video.i_frame_rate = 10000000;
1144 p_stream->fmt.video.i_frame_rate_base = st->time_unit;
1145 if( st->time_unit <= 0 )
1146 st->time_unit = 400000;
1147 p_stream->f_rate = 10000000.0 / st->time_unit;
1148 p_stream->fmt.video.i_bits_per_pixel = st->bits_per_sample;
1149 p_stream->fmt.video.i_width = st->sh.video.width;
1150 p_stream->fmt.video.i_height = st->sh.video.height;
1153 "fps: %f, width:%i; height:%i, bitcount:%i",
1155 p_stream->fmt.video.i_width,
1156 p_stream->fmt.video.i_height,
1157 p_stream->fmt.video.i_bits_per_pixel );
1159 /* Check for audio header (new format) */
1160 else if( !strncmp( st->streamtype, "audio", 5 ) )
1166 st->sh.audio.channels = GetWLE( &oggpacket.packet[1+44] );
1167 st->sh.audio.blockalign = GetWLE( &oggpacket.packet[1+48] );
1168 st->sh.audio.avgbytespersec = GetDWLE( &oggpacket.packet[1+52] );
1170 p_stream->fmt.i_cat = AUDIO_ES;
1172 /* We need to get rid of the header packet */
1173 ogg_stream_packetout( &p_stream->os, &oggpacket );
1175 i_extra_size = st->size - 56;
1177 if( i_extra_size > 0 &&
1178 i_extra_size < oggpacket.bytes - 1 - 56 )
1180 p_stream->fmt.i_extra = i_extra_size;
1181 p_stream->fmt.p_extra = malloc( p_stream->fmt.i_extra );
1182 if( p_stream->fmt.p_extra )
1183 memcpy( p_stream->fmt.p_extra, st + 1,
1184 p_stream->fmt.i_extra );
1186 p_stream->fmt.i_extra = 0;
1189 memcpy( p_buffer, st->subtype, 4 );
1191 i_format_tag = strtol(p_buffer,NULL,16);
1192 p_stream->fmt.audio.i_channels = st->sh.audio.channels;
1193 if( st->time_unit <= 0 )
1194 st->time_unit = 10000000;
1195 p_stream->f_rate = p_stream->fmt.audio.i_rate = st->samples_per_unit * 10000000 / st->time_unit;
1196 p_stream->fmt.i_bitrate = st->sh.audio.avgbytespersec * 8;
1197 p_stream->fmt.audio.i_blockalign = st->sh.audio.blockalign;
1198 p_stream->fmt.audio.i_bitspersample = st->bits_per_sample;
1200 wf_tag_to_fourcc( i_format_tag,
1201 &p_stream->fmt.i_codec, 0 );
1203 if( p_stream->fmt.i_codec ==
1204 VLC_FOURCC('u','n','d','f') )
1206 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
1207 ( i_format_tag >> 8 ) & 0xff,
1208 i_format_tag & 0xff );
1211 msg_Dbg( p_demux, "found audio header of type: %.4s",
1212 (char *)&p_stream->fmt.i_codec );
1213 msg_Dbg( p_demux, "audio:0x%4.4x channels:%d %dHz "
1214 "%dbits/sample %dkb/s",
1216 p_stream->fmt.audio.i_channels,
1217 p_stream->fmt.audio.i_rate,
1218 p_stream->fmt.audio.i_bitspersample,
1219 p_stream->fmt.i_bitrate / 1024 );
1221 /* Check for text (subtitles) header */
1222 else if( !strncmp(st->streamtype, "text", 4) )
1224 /* We need to get rid of the header packet */
1225 ogg_stream_packetout( &p_stream->os, &oggpacket );
1227 msg_Dbg( p_demux, "found text subtitles header" );
1228 p_stream->fmt.i_cat = SPU_ES;
1229 p_stream->fmt.i_codec = VLC_CODEC_SUBT;
1230 p_stream->f_rate = 1000; /* granulepos is in millisec */
1234 msg_Dbg( p_demux, "stream %d has a header marker "
1235 "but is of an unknown type", p_ogg->i_streams-1 );
1240 else if( oggpacket.bytes >= 7 &&
1241 ! memcmp( oggpacket.packet, "fishead", 7 ) )
1245 msg_Dbg( p_demux, "stream %d is a skeleton",
1246 p_ogg->i_streams-1 );
1247 /* FIXME: https://trac.videolan.org/vlc/ticket/1412 */
1251 msg_Dbg( p_demux, "stream %d is of unknown type",
1252 p_ogg->i_streams-1 );
1257 if( Ogg_ReadPage( p_demux, &oggpage ) != VLC_SUCCESS )
1258 return VLC_EGENERIC;
1261 /* we'll need to get all headers for all of those streams
1262 that we have to backup headers for */
1264 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1266 if( p_ogg->pp_stream[i_stream]->b_force_backup )
1271 /* This is the first data page, which means we are now finished
1272 * with the initial pages. We just need to store it in the relevant
1274 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1276 if( ogg_stream_pagein( &p_ogg->pp_stream[i_stream]->os,
1279 p_ogg->b_page_waiting = true;
1288 return VLC_EGENERIC;
1291 /****************************************************************************
1292 * Ogg_BeginningOfStream: Look for Beginning of Stream ogg pages and add
1293 * Elementary streams.
1294 ****************************************************************************/
1295 static int Ogg_BeginningOfStream( demux_t *p_demux )
1297 demux_sys_t *p_ogg = p_demux->p_sys ;
1298 logical_stream_t *p_old_stream = p_ogg->p_old_stream;
1301 /* Find the logical streams embedded in the physical stream and
1302 * initialize our p_ogg structure. */
1303 if( Ogg_FindLogicalStreams( p_demux ) != VLC_SUCCESS )
1305 msg_Warn( p_demux, "couldn't find any ogg logical stream" );
1306 return VLC_EGENERIC;
1309 p_ogg->i_bitrate = 0;
1311 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1313 logical_stream_t *p_stream = p_ogg->pp_stream[i_stream];
1315 p_stream->p_es = NULL;
1317 /* Try first to reuse an old ES */
1319 p_old_stream->fmt.i_cat == p_stream->fmt.i_cat &&
1320 p_old_stream->fmt.i_codec == p_stream->fmt.i_codec )
1322 msg_Dbg( p_demux, "will reuse old stream to avoid glitch" );
1324 p_stream->p_es = p_old_stream->p_es;
1325 es_format_Copy( &p_stream->fmt_old, &p_old_stream->fmt );
1327 p_old_stream->p_es = NULL;
1328 p_old_stream = NULL;
1331 if( !p_stream->p_es )
1333 /* Better be safe than sorry when possible with ogm */
1334 if( p_stream->fmt.i_codec == VLC_CODEC_MPGA ||
1335 p_stream->fmt.i_codec == VLC_CODEC_A52 )
1336 p_stream->fmt.b_packetized = false;
1338 p_stream->p_es = es_out_Add( p_demux->out, &p_stream->fmt );
1341 // TODO: something to do here ?
1342 if( p_stream->fmt.i_codec == VLC_CODEC_CMML )
1344 /* Set the CMML stream active */
1345 es_out_Control( p_demux->out, ES_OUT_SET_ES, p_stream->p_es );
1348 p_ogg->i_bitrate += p_stream->fmt.i_bitrate;
1350 p_stream->i_pcr = p_stream->i_previous_pcr =
1351 p_stream->i_interpolated_pcr = -1;
1352 p_stream->b_reinit = false;
1355 if( p_ogg->p_old_stream )
1357 if( p_ogg->p_old_stream->p_es )
1358 msg_Dbg( p_demux, "old stream not reused" );
1359 Ogg_LogicalStreamDelete( p_demux, p_ogg->p_old_stream );
1360 p_ogg->p_old_stream = NULL;
1365 /****************************************************************************
1366 * Ogg_EndOfStream: clean up the ES when an End of Stream is detected.
1367 ****************************************************************************/
1368 static void Ogg_EndOfStream( demux_t *p_demux )
1370 demux_sys_t *p_ogg = p_demux->p_sys ;
1373 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1374 Ogg_LogicalStreamDelete( p_demux, p_ogg->pp_stream[i_stream] );
1375 free( p_ogg->pp_stream );
1378 p_ogg->i_bitrate = 0;
1379 p_ogg->i_streams = 0;
1380 p_ogg->pp_stream = NULL;
1384 vlc_meta_Delete( p_ogg->p_meta );
1385 p_ogg->p_meta = NULL;
1389 * This function delete and release all data associated to a logical_stream_t
1391 static void Ogg_LogicalStreamDelete( demux_t *p_demux, logical_stream_t *p_stream )
1393 if( p_stream->p_es )
1394 es_out_Del( p_demux->out, p_stream->p_es );
1396 ogg_stream_clear( &p_stream->os );
1397 free( p_stream->p_headers );
1399 es_format_Clean( &p_stream->fmt_old );
1400 es_format_Clean( &p_stream->fmt );
1405 * This function check if a we need to reset a decoder in case we are
1408 static bool Ogg_IsVorbisFormatCompatible( const es_format_t *p_new, const es_format_t *p_old )
1410 unsigned pi_new_size[XIPH_MAX_HEADER_COUNT];
1411 void *pp_new_data[XIPH_MAX_HEADER_COUNT];
1412 unsigned i_new_count;
1413 if( xiph_SplitHeaders(pi_new_size, pp_new_data, &i_new_count, p_new->i_extra, p_new->p_extra ) )
1416 unsigned pi_old_size[XIPH_MAX_HEADER_COUNT];
1417 void *pp_old_data[XIPH_MAX_HEADER_COUNT];
1418 unsigned i_old_count;
1419 if( xiph_SplitHeaders(pi_old_size, pp_old_data, &i_old_count, p_old->i_extra, p_old->p_extra ) )
1422 bool b_match = i_new_count == i_old_count;
1423 for( unsigned i = 0; i < i_new_count && b_match; i++ )
1425 /* Ignore vorbis comment */
1428 if( pi_new_size[i] != pi_old_size[i] ||
1429 memcmp( pp_new_data[i], pp_old_data[i], pi_new_size[i] ) )
1433 for( unsigned i = 0; i < i_new_count; i++ )
1434 free( pp_new_data[i] );
1435 for( unsigned i = 0; i < i_old_count; i++ )
1436 free( pp_old_data[i] );
1439 static bool Ogg_LogicalStreamResetEsFormat( demux_t *p_demux, logical_stream_t *p_stream )
1441 bool b_compatible = false;
1442 if( !p_stream->fmt_old.i_cat || !p_stream->fmt_old.i_codec )
1445 /* Only vorbis is supported */
1446 if( p_stream->fmt.i_codec == VLC_CODEC_VORBIS )
1447 b_compatible = Ogg_IsVorbisFormatCompatible( &p_stream->fmt, &p_stream->fmt_old );
1450 msg_Warn( p_demux, "cannot reuse old stream, resetting the decoder" );
1452 return !b_compatible;
1454 static void Ogg_ExtractXiphMeta( demux_t *p_demux, const void *p_headers, unsigned i_headers, unsigned i_skip )
1456 demux_sys_t *p_ogg = p_demux->p_sys;
1458 unsigned pi_size[XIPH_MAX_HEADER_COUNT];
1459 void *pp_data[XIPH_MAX_HEADER_COUNT];
1461 if( xiph_SplitHeaders( pi_size, pp_data, &i_count, i_headers, p_headers ) )
1464 /* TODO how to handle multiple comments properly ? */
1465 if( i_count >= 2 && pi_size[1] > i_skip )
1466 vorbis_ParseComment( &p_ogg->p_meta, (uint8_t*)pp_data[1] + i_skip, pi_size[1] - i_skip );
1468 for( unsigned i = 0; i < i_count; i++ )
1471 static void Ogg_ExtractMeta( demux_t *p_demux, vlc_fourcc_t i_codec, const uint8_t *p_headers, int i_headers )
1473 demux_sys_t *p_ogg = p_demux->p_sys;
1477 /* 3 headers with the 2° one being the comments */
1478 case VLC_CODEC_VORBIS:
1479 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 1+6 );
1481 case VLC_CODEC_THEORA:
1482 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 1+6 );
1484 case VLC_CODEC_SPEEX:
1485 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 0 );
1488 /* N headers with the 2° one being the comments */
1489 case VLC_CODEC_KATE:
1490 /* 1 byte for header type, 7 bytes for magic, 1 reserved zero byte */
1491 Ogg_ExtractXiphMeta( p_demux, p_headers, i_headers, 1+7+1 );
1495 case VLC_CODEC_FLAC:
1496 msg_Warn( p_demux, "Ogg_ExtractMeta does not support %4.4s", (const char*)&i_codec );
1500 case VLC_CODEC_CMML: /* CMML is XML text, doesn't have Vorbis comments */
1501 case VLC_CODEC_DIRAC:
1506 p_demux->info.i_update |= INPUT_UPDATE_META;
1509 static void Ogg_ReadTheoraHeader( logical_stream_t *p_stream,
1510 ogg_packet *p_oggpacket )
1513 int i_fps_numerator;
1514 int i_fps_denominator;
1515 int i_keyframe_frequency_force;
1521 p_stream->fmt.i_cat = VIDEO_ES;
1522 p_stream->fmt.i_codec = VLC_CODEC_THEORA;
1524 /* Signal that we want to keep a backup of the theora
1525 * stream headers. They will be used when switching between
1527 p_stream->b_force_backup = 1;
1529 /* Cheat and get additionnal info ;) */
1530 bs_init( &bitstream, p_oggpacket->packet, p_oggpacket->bytes );
1531 bs_skip( &bitstream, 56 );
1533 i_major = bs_read( &bitstream, 8 ); /* major version num */
1534 i_minor = bs_read( &bitstream, 8 ); /* minor version num */
1535 i_subminor = bs_read( &bitstream, 8 ); /* subminor version num */
1537 bs_read( &bitstream, 16 ) /*<< 4*/; /* width */
1538 bs_read( &bitstream, 16 ) /*<< 4*/; /* height */
1539 bs_read( &bitstream, 24 ); /* frame width */
1540 bs_read( &bitstream, 24 ); /* frame height */
1541 bs_read( &bitstream, 8 ); /* x offset */
1542 bs_read( &bitstream, 8 ); /* y offset */
1544 i_fps_numerator = bs_read( &bitstream, 32 );
1545 i_fps_denominator = bs_read( &bitstream, 32 );
1546 bs_read( &bitstream, 24 ); /* aspect_numerator */
1547 bs_read( &bitstream, 24 ); /* aspect_denominator */
1549 p_stream->fmt.video.i_frame_rate = i_fps_numerator;
1550 p_stream->fmt.video.i_frame_rate_base = i_fps_denominator;
1552 bs_read( &bitstream, 8 ); /* colorspace */
1553 p_stream->fmt.i_bitrate = bs_read( &bitstream, 24 );
1554 bs_read( &bitstream, 6 ); /* quality */
1556 i_keyframe_frequency_force = 1 << bs_read( &bitstream, 5 );
1558 /* granule_shift = i_log( frequency_force -1 ) */
1559 p_stream->i_granule_shift = 0;
1560 i_keyframe_frequency_force--;
1561 while( i_keyframe_frequency_force )
1563 p_stream->i_granule_shift++;
1564 i_keyframe_frequency_force >>= 1;
1567 i_version = i_major * 1000000 + i_minor * 1000 + i_subminor;
1568 p_stream->i_keyframe_offset = 0;
1570 if ( i_version >= 3002001 )
1572 p_stream->i_keyframe_offset = 1;
1575 p_stream->f_rate = ((float)i_fps_numerator) / i_fps_denominator;
1578 static void Ogg_ReadVorbisHeader( logical_stream_t *p_stream,
1579 ogg_packet *p_oggpacket )
1583 p_stream->fmt.i_cat = AUDIO_ES;
1584 p_stream->fmt.i_codec = VLC_CODEC_VORBIS;
1586 /* Signal that we want to keep a backup of the vorbis
1587 * stream headers. They will be used when switching between
1589 p_stream->b_force_backup = 1;
1591 /* Cheat and get additionnal info ;) */
1592 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1593 oggpack_adv( &opb, 88 );
1594 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 8 );
1595 p_stream->f_rate = p_stream->fmt.audio.i_rate =
1596 oggpack_read( &opb, 32 );
1597 oggpack_adv( &opb, 32 );
1598 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
1601 static void Ogg_ReadSpeexHeader( logical_stream_t *p_stream,
1602 ogg_packet *p_oggpacket )
1606 p_stream->fmt.i_cat = AUDIO_ES;
1607 p_stream->fmt.i_codec = VLC_CODEC_SPEEX;
1609 /* Signal that we want to keep a backup of the speex
1610 * stream headers. They will be used when switching between
1612 p_stream->b_force_backup = 1;
1614 /* Cheat and get additionnal info ;) */
1615 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1616 oggpack_adv( &opb, 224 );
1617 oggpack_adv( &opb, 32 ); /* speex_version_id */
1618 oggpack_adv( &opb, 32 ); /* header_size */
1619 p_stream->f_rate = p_stream->fmt.audio.i_rate = oggpack_read( &opb, 32 );
1620 oggpack_adv( &opb, 32 ); /* mode */
1621 oggpack_adv( &opb, 32 ); /* mode_bitstream_version */
1622 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 32 );
1623 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
1626 static void Ogg_ReadFlacHeader( demux_t *p_demux, logical_stream_t *p_stream,
1627 ogg_packet *p_oggpacket )
1629 /* Parse the STREAMINFO metadata */
1632 bs_init( &s, p_oggpacket->packet, p_oggpacket->bytes );
1635 if( bs_read( &s, 7 ) == 0 )
1637 if( bs_read( &s, 24 ) >= 34 /*size STREAMINFO*/ )
1640 p_stream->f_rate = p_stream->fmt.audio.i_rate = bs_read( &s, 20 );
1641 p_stream->fmt.audio.i_channels = bs_read( &s, 3 ) + 1;
1643 msg_Dbg( p_demux, "FLAC header, channels: %i, rate: %i",
1644 p_stream->fmt.audio.i_channels, (int)p_stream->f_rate );
1648 msg_Dbg( p_demux, "FLAC STREAMINFO metadata too short" );
1651 /* Fake this as the last metadata block */
1652 *((uint8_t*)p_oggpacket->packet) |= 0x80;
1656 /* This ain't a STREAMINFO metadata */
1657 msg_Dbg( p_demux, "Invalid FLAC STREAMINFO metadata" );
1661 static void Ogg_ReadKateHeader( logical_stream_t *p_stream,
1662 ogg_packet *p_oggpacket )
1670 p_stream->fmt.i_cat = SPU_ES;
1671 p_stream->fmt.i_codec = VLC_CODEC_KATE;
1673 /* Signal that we want to keep a backup of the kate
1674 * stream headers. They will be used when switching between
1676 p_stream->b_force_backup = 1;
1678 /* Cheat and get additionnal info ;) */
1679 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1680 oggpack_adv( &opb, 11*8 ); /* packet type, kate magic, version */
1681 p_stream->i_kate_num_headers = oggpack_read( &opb, 8 );
1682 oggpack_adv( &opb, 3*8 );
1683 p_stream->i_granule_shift = oggpack_read( &opb, 8 );
1684 oggpack_adv( &opb, 8*8 ); /* reserved */
1685 gnum = oggpack_read( &opb, 32 );
1686 gden = oggpack_read( &opb, 32 );
1687 p_stream->f_rate = (double)gnum/gden;
1689 p_stream->fmt.psz_language = malloc(16);
1690 if( p_stream->fmt.psz_language )
1692 for( n = 0; n < 16; n++ )
1693 p_stream->fmt.psz_language[n] = oggpack_read(&opb,8);
1694 p_stream->fmt.psz_language[15] = 0; /* just in case */
1698 for( n = 0; n < 16; n++ )
1699 oggpack_read(&opb,8);
1701 p_stream->fmt.psz_description = malloc(16);
1702 if( p_stream->fmt.psz_description )
1704 for( n = 0; n < 16; n++ )
1705 p_stream->fmt.psz_description[n] = oggpack_read(&opb,8);
1706 p_stream->fmt.psz_description[15] = 0; /* just in case */
1708 /* Now find a localized user readable description for this category */
1709 psz_desc = strdup(FindKateCategoryName(p_stream->fmt.psz_description));
1712 free( p_stream->fmt.psz_description );
1713 p_stream->fmt.psz_description = psz_desc;
1718 for( n = 0; n < 16; n++ )
1719 oggpack_read(&opb,8);
1723 static void Ogg_ReadAnnodexHeader( vlc_object_t *p_this,
1724 logical_stream_t *p_stream,
1725 ogg_packet *p_oggpacket )
1727 if( p_oggpacket->bytes >= 28 &&
1728 !memcmp( p_oggpacket->packet, "Annodex", 7 ) )
1732 uint16_t major_version;
1733 uint16_t minor_version;
1734 uint64_t timebase_numerator;
1735 uint64_t timebase_denominator;
1737 Ogg_ReadTheoraHeader( p_stream, p_oggpacket );
1739 oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
1740 oggpack_adv( &opb, 8*8 ); /* "Annodex\0" header */
1741 major_version = oggpack_read( &opb, 2*8 ); /* major version */
1742 minor_version = oggpack_read( &opb, 2*8 ); /* minor version */
1743 timebase_numerator = GetQWLE( &p_oggpacket->packet[16] );
1744 timebase_denominator = GetQWLE( &p_oggpacket->packet[24] );
1746 else if( p_oggpacket->bytes >= 42 &&
1747 !memcmp( p_oggpacket->packet, "AnxData", 7 ) )
1749 uint64_t granule_rate_numerator;
1750 uint64_t granule_rate_denominator;
1751 char content_type_string[1024];
1753 /* Read in Annodex header fields */
1755 granule_rate_numerator = GetQWLE( &p_oggpacket->packet[8] );
1756 granule_rate_denominator = GetQWLE( &p_oggpacket->packet[16] );
1757 p_stream->i_secondary_header_packets =
1758 GetDWLE( &p_oggpacket->packet[24] );
1760 /* we are guaranteed that the first header field will be
1761 * the content-type (by the Annodex standard) */
1762 content_type_string[0] = '\0';
1763 if( !strncasecmp( (char*)(&p_oggpacket->packet[28]), "Content-Type: ", 14 ) )
1765 uint8_t *p = memchr( &p_oggpacket->packet[42], '\r',
1766 p_oggpacket->bytes - 1 );
1767 if( p && p[0] == '\r' && p[1] == '\n' )
1768 sscanf( (char*)(&p_oggpacket->packet[42]), "%1023s\r\n",
1769 content_type_string );
1772 msg_Dbg( p_this, "AnxData packet info: %"PRId64" / %"PRId64", %d, ``%s''",
1773 granule_rate_numerator, granule_rate_denominator,
1774 p_stream->i_secondary_header_packets, content_type_string );
1776 p_stream->f_rate = (float) granule_rate_numerator /
1777 (float) granule_rate_denominator;
1779 /* What type of file do we have?
1780 * strcmp is safe to use here because we've extracted
1781 * content_type_string from the stream manually */
1782 if( !strncmp(content_type_string, "audio/x-wav", 11) )
1784 /* n.b. WAVs are unsupported right now */
1785 p_stream->fmt.i_cat = UNKNOWN_ES;
1787 else if( !strncmp(content_type_string, "audio/x-vorbis", 14) )
1789 p_stream->fmt.i_cat = AUDIO_ES;
1790 p_stream->fmt.i_codec = VLC_CODEC_VORBIS;
1792 p_stream->b_force_backup = 1;
1794 else if( !strncmp(content_type_string, "audio/x-speex", 14) )
1796 p_stream->fmt.i_cat = AUDIO_ES;
1797 p_stream->fmt.i_codec = VLC_CODEC_SPEEX;
1799 p_stream->b_force_backup = 1;
1801 else if( !strncmp(content_type_string, "video/x-theora", 14) )
1803 p_stream->fmt.i_cat = VIDEO_ES;
1804 p_stream->fmt.i_codec = VLC_CODEC_THEORA;
1806 p_stream->b_force_backup = 1;
1808 else if( !strncmp(content_type_string, "video/x-xvid", 14) )
1810 p_stream->fmt.i_cat = VIDEO_ES;
1811 p_stream->fmt.i_codec = VLC_FOURCC( 'x','v','i','d' );
1813 p_stream->b_force_backup = 1;
1815 else if( !strncmp(content_type_string, "video/mpeg", 14) )
1817 /* n.b. MPEG streams are unsupported right now */
1818 p_stream->fmt.i_cat = VIDEO_ES;
1819 p_stream->fmt.i_codec = VLC_CODEC_MPGV;
1821 else if( !strncmp(content_type_string, "text/x-cmml", 11) )
1823 ogg_stream_packetout( &p_stream->os, p_oggpacket );
1824 p_stream->fmt.i_cat = SPU_ES;
1825 p_stream->fmt.i_codec = VLC_CODEC_CMML;
1830 static uint32_t dirac_uint( bs_t *p_bs )
1832 uint32_t u_count = 0, u_value = 0;
1834 while( !bs_eof( p_bs ) && !bs_read( p_bs, 1 ) )
1838 u_value |= bs_read( p_bs, 1 );
1841 return (1<<u_count) - 1 + u_value;
1844 static int dirac_bool( bs_t *p_bs )
1846 return bs_read( p_bs, 1 );
1849 static bool Ogg_ReadDiracHeader( logical_stream_t *p_stream,
1850 ogg_packet *p_oggpacket )
1852 static const struct {
1853 uint32_t u_n /* numerator */, u_d /* denominator */;
1854 } p_dirac_frate_tbl[] = { /* table 10.3 */
1855 {1,1}, /* this first value is never used */
1856 {24000,1001}, {24,1}, {25,1}, {30000,1001}, {30,1},
1857 {50,1}, {60000,1001}, {60,1}, {15000,1001}, {25,2},
1859 static const size_t u_dirac_frate_tbl = sizeof(p_dirac_frate_tbl)/sizeof(*p_dirac_frate_tbl);
1861 static const uint32_t pu_dirac_vidfmt_frate[] = { /* table C.1 */
1862 1, 9, 10, 9, 10, 9, 10, 4, 3, 7, 6, 4, 3, 7, 6, 2, 2, 7, 6, 7, 6,
1864 static const size_t u_dirac_vidfmt_frate = sizeof(pu_dirac_vidfmt_frate)/sizeof(*pu_dirac_vidfmt_frate);
1868 p_stream->i_granule_shift = 22; /* not 32 */
1870 /* Backing up stream headers is not required -- seqhdrs are repeated
1871 * thoughout the stream at suitable decoding start points */
1872 p_stream->b_force_backup = 0;
1874 /* read in useful bits from sequence header */
1875 bs_init( &bs, p_oggpacket->packet, p_oggpacket->bytes );
1876 bs_skip( &bs, 13*8); /* parse_info_header */
1877 dirac_uint( &bs ); /* major_version */
1878 dirac_uint( &bs ); /* minor_version */
1879 dirac_uint( &bs ); /* profile */
1880 dirac_uint( &bs ); /* level */
1882 uint32_t u_video_format = dirac_uint( &bs ); /* index */
1883 if( u_video_format >= u_dirac_vidfmt_frate )
1885 /* don't know how to parse this ogg dirac stream */
1889 if( dirac_bool( &bs ) )
1891 dirac_uint( &bs ); /* frame_width */
1892 dirac_uint( &bs ); /* frame_height */
1895 if( dirac_bool( &bs ) )
1897 dirac_uint( &bs ); /* chroma_format */
1900 if( dirac_bool( &bs ) )
1902 dirac_uint( &bs ); /* scan_format */
1905 uint32_t u_n = p_dirac_frate_tbl[pu_dirac_vidfmt_frate[u_video_format]].u_n;
1906 uint32_t u_d = p_dirac_frate_tbl[pu_dirac_vidfmt_frate[u_video_format]].u_d;
1907 if( dirac_bool( &bs ) )
1909 uint32_t u_frame_rate_index = dirac_uint( &bs );
1910 if( u_frame_rate_index >= u_dirac_frate_tbl )
1912 /* something is wrong with this stream */
1915 u_n = p_dirac_frate_tbl[u_frame_rate_index].u_n;
1916 u_d = p_dirac_frate_tbl[u_frame_rate_index].u_d;
1917 if( u_frame_rate_index == 0 )
1919 u_n = dirac_uint( &bs ); /* frame_rate_numerator */
1920 u_d = dirac_uint( &bs ); /* frame_rate_denominator */
1923 p_stream->f_rate = (float) u_n / u_d;
1925 /* probably is an ogg dirac es */
1926 p_stream->fmt.i_cat = VIDEO_ES;
1927 p_stream->fmt.i_codec = VLC_CODEC_DIRAC;