1 /*****************************************************************************
2 * ogg.c : ogg stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2003 VideoLAN
5 * $Id: ogg.c,v 1.49 2003/12/04 22:37:02 gbazin Exp $
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
28 #include <vlc/input.h>
35 #define OGG_BLOCK_SIZE 4096
37 /*****************************************************************************
38 * Definitions of structures and functions used by this plugins
39 *****************************************************************************/
40 typedef struct logical_stream_s
42 ogg_stream_state os; /* logical stream of packets */
51 /* the header of some logical streams (eg vorbis) contain essential
52 * data for the decoder. We back them up here in case we need to re-feed
53 * them to the decoder. */
56 ogg_packet *p_packets_backup;
58 /* program clock reference (in units of 90kHz) derived from the previous
61 mtime_t i_interpolated_pcr;
62 mtime_t i_previous_pcr;
66 int i_theora_keyframe_granule_shift;
72 ogg_sync_state oy; /* sync and verify incoming physical bitstream */
74 int i_streams; /* number of logical bitstreams */
75 logical_stream_t **pp_stream; /* pointer to an array of logical streams */
77 /* program clock reference (in units of 90kHz) derived from the pcr of
80 int i_old_synchro_state;
86 /* OggDS headers for the new header format (used in ogm files) */
87 typedef struct stream_header_video
91 } stream_header_video;
93 typedef struct stream_header_audio
96 ogg_int16_t blockalign;
97 ogg_int32_t avgbytespersec;
98 } stream_header_audio;
100 typedef struct stream_header
105 ogg_int32_t size; /* size of the structure */
107 ogg_int64_t time_unit; /* in reference time */
108 ogg_int64_t samples_per_unit;
109 ogg_int32_t default_len; /* in media time */
111 ogg_int32_t buffersize;
112 ogg_int16_t bits_per_sample;
117 stream_header_video video;
119 stream_header_audio audio;
123 /* Some defines from OggDS */
124 #define PACKET_TYPE_HEADER 0x01
125 #define PACKET_TYPE_BITS 0x07
126 #define PACKET_LEN_BITS01 0xc0
127 #define PACKET_LEN_BITS2 0x02
128 #define PACKET_IS_SYNCPOINT 0x08
130 /*****************************************************************************
132 *****************************************************************************/
133 static int Activate ( vlc_object_t * );
134 static void Deactivate( vlc_object_t * );
135 static int Demux ( input_thread_t * );
136 static int Control ( input_thread_t *, int, va_list );
138 /* Bitstream manipulation */
139 static int Ogg_Check ( input_thread_t *p_input );
140 static int Ogg_ReadPage ( input_thread_t *, demux_sys_t *, ogg_page * );
141 static void Ogg_UpdatePCR ( logical_stream_t *, ogg_packet * );
142 static void Ogg_DecodePacket ( input_thread_t *p_input,
143 logical_stream_t *p_stream, ogg_packet * );
145 static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg);
146 static int Ogg_FindLogicalStreams( input_thread_t *p_input,demux_sys_t *p_ogg);
147 static void Ogg_EndOfStream( input_thread_t *p_input, demux_sys_t *p_ogg );
149 /*****************************************************************************
151 *****************************************************************************/
153 set_description( _("ogg stream demuxer" ) );
154 set_capability( "demux", 50 );
155 set_callbacks( Activate, Deactivate );
156 add_shortcut( "ogg" );
159 /****************************************************************************
160 * Ogg_Check: Check we are dealing with an ogg stream.
161 ****************************************************************************/
162 static int Ogg_Check( input_thread_t *p_input )
165 int i_size = input_Peek( p_input, &p_peek, 4 );
167 /* Check for the Ogg capture pattern */
168 if( !(i_size>3) || !(p_peek[0] == 'O') || !(p_peek[1] == 'g') ||
169 !(p_peek[2] == 'g') || !(p_peek[3] == 'S') )
172 /* FIXME: Capture pattern might not be enough so we can also check for the
173 * the first complete page */
178 /****************************************************************************
179 * Ogg_ReadPage: Read a full Ogg page from the physical bitstream.
180 ****************************************************************************
181 * Returns VLC_SUCCESS if a page has been read. An error might happen if we
182 * are at the end of stream.
183 ****************************************************************************/
184 static int Ogg_ReadPage( input_thread_t *p_input, demux_sys_t *p_ogg,
185 ogg_page *p_oggpage )
188 data_packet_t *p_data;
191 while( ogg_sync_pageout( &p_ogg->oy, p_oggpage ) != 1 )
193 i_read = input_SplitBuffer( p_input, &p_data, OGG_BLOCK_SIZE );
197 p_buffer = ogg_sync_buffer( &p_ogg->oy, i_read );
198 p_input->p_vlc->pf_memcpy( p_buffer, p_data->p_payload_start, i_read );
199 ogg_sync_wrote( &p_ogg->oy, i_read );
200 input_DeletePacket( p_input->p_method_data, p_data );
206 /****************************************************************************
207 * Ogg_UpdatePCR: update the PCR (90kHz program clock reference) for the
209 ****************************************************************************/
210 static void Ogg_UpdatePCR( logical_stream_t *p_stream,
211 ogg_packet *p_oggpacket )
213 /* Convert the granulepos into a pcr */
214 if( p_oggpacket->granulepos >= 0 )
216 if( p_stream->fmt.i_codec != VLC_FOURCC( 't','h','e','o' ) )
218 p_stream->i_pcr = p_oggpacket->granulepos * 90000
223 ogg_int64_t iframe = p_oggpacket->granulepos >>
224 p_stream->i_theora_keyframe_granule_shift;
225 ogg_int64_t pframe = p_oggpacket->granulepos -
226 ( iframe << p_stream->i_theora_keyframe_granule_shift );
228 p_stream->i_pcr = ( iframe + pframe ) * 90000
232 p_stream->i_interpolated_pcr = p_stream->i_pcr;
236 p_stream->i_pcr = -1;
238 /* no granulepos available, try to interpolate the pcr.
239 * If we can't then don't touch the old value. */
240 if( p_stream->fmt.i_cat == VIDEO_ES )
241 /* 1 frame per packet */
242 p_stream->i_interpolated_pcr += (90000 / p_stream->f_rate);
243 else if( p_stream->fmt.i_bitrate )
244 p_stream->i_interpolated_pcr += ( p_oggpacket->bytes * 90000
245 / p_stream->fmt.i_bitrate / 8 );
249 /****************************************************************************
250 * Ogg_DecodePacket: Decode an Ogg packet.
251 ****************************************************************************/
252 static void Ogg_DecodePacket( input_thread_t *p_input,
253 logical_stream_t *p_stream,
254 ogg_packet *p_oggpacket )
257 vlc_bool_t b_selected;
258 int i_header_len = 0;
262 if( !p_oggpacket->bytes )
264 msg_Dbg( p_input, "discarding 0 sized packet" );
268 if( p_stream->b_force_backup )
270 ogg_packet *p_packet_backup;
271 p_stream->i_packets_backup++;
272 switch( p_stream->fmt.i_codec )
274 case VLC_FOURCC( 'v','o','r','b' ):
275 case VLC_FOURCC( 's','p','x',' ' ):
276 case VLC_FOURCC( 't','h','e','o' ):
277 if( p_stream->i_packets_backup == 3 ) p_stream->b_force_backup = 0;
280 case VLC_FOURCC( 'f','l','a','c' ):
281 if( p_stream->i_packets_backup == 1 ) return;
282 else if( p_stream->i_packets_backup == 2 )
284 /* Parse the STREAMINFO metadata */
286 bs_init( &s, p_oggpacket->packet, p_oggpacket->bytes );
288 if( bs_read( &s, 7 ) == 0 )
290 if( bs_read( &s, 24 ) >= 34 /*size STREAMINFO*/ )
293 p_stream->f_rate = p_stream->fmt.audio.i_rate =
295 p_stream->fmt.audio.i_channels =
296 bs_read( &s, 3 ) + 1;
298 msg_Dbg( p_input, "Flac header, channels: %i, rate: %i",
299 p_stream->fmt.audio.i_channels,
300 (int)p_stream->f_rate );
304 msg_Dbg( p_input, "FLAC STREAMINFO metadata too short" );
307 /* Store STREAMINFO for the decoder and packetizer */
308 p_stream->fmt.i_extra = p_oggpacket->bytes + 4;
309 p_stream->fmt.p_extra = malloc( p_stream->fmt.i_extra );
310 memcpy( p_stream->fmt.p_extra, "fLaC", 4);
311 memcpy( ((uint8_t *)p_stream->fmt.p_extra) + 4,
312 p_oggpacket->packet, p_oggpacket->bytes );
314 /* Fake this as the last metadata block */
315 ((uint8_t*)p_stream->fmt.p_extra)[4] |= 0x80;
317 p_stream->p_es = es_out_Add( p_input->p_es_out,
322 /* This ain't a STREAMINFO metadata */
323 msg_Dbg( p_input, "Invalid FLAC STREAMINFO metadata" );
325 p_stream->b_force_backup = 0;
326 p_stream->i_packets_backup = 0;
332 p_stream->b_force_backup = 0;
336 /* Backup the ogg packet (likely an header packet) */
337 p_stream->p_packets_backup =
338 realloc( p_stream->p_packets_backup, p_stream->i_packets_backup *
339 sizeof(ogg_packet) );
342 &p_stream->p_packets_backup[p_stream->i_packets_backup - 1];
344 p_packet_backup->bytes = p_oggpacket->bytes;
345 p_packet_backup->granulepos = p_oggpacket->granulepos;
347 if( p_oggpacket->granulepos >= 0 )
349 /* Because of vorbis granulepos scheme we must set the pcr for the
350 * 1st header packet so it doesn't get discarded in the
352 Ogg_UpdatePCR( p_stream, p_oggpacket );
355 p_packet_backup->packet = malloc( p_oggpacket->bytes );
356 if( !p_packet_backup->packet ) return;
357 memcpy( p_packet_backup->packet, p_oggpacket->packet,
358 p_oggpacket->bytes );
361 /* Check the ES is selected */
362 es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE,
363 p_stream->p_es, &b_selected );
365 if( b_selected && !p_stream->b_activated )
367 p_stream->b_activated = VLC_TRUE;
369 /* Newly activated stream, feed the backup headers to the decoder */
370 if( !p_stream->b_force_backup )
373 for( i = 0; i < p_stream->i_packets_backup; i++ )
375 /* Set correct starting date in header packets */
376 p_stream->p_packets_backup[i].granulepos =
377 p_stream->i_interpolated_pcr * p_stream->f_rate / 90000;
379 Ogg_DecodePacket( p_input, p_stream,
380 &p_stream->p_packets_backup[i] );
385 /* Convert the pcr into a pts */
386 if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) ||
387 p_stream->fmt.i_codec == VLC_FOURCC( 's','p','x',' ' ) ||
388 p_stream->fmt.i_codec == VLC_FOURCC( 'f','l','a','c' ) )
390 if( p_stream->i_pcr >= 0 )
392 /* This is for streams where the granulepos of the header packets
393 * doesn't match these of the data packets (eg. ogg web radios). */
394 if( p_stream->i_previous_pcr == 0 &&
395 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY * 9/100 )
396 p_input->stream.p_selected_program->i_synchro_state =
399 p_stream->i_previous_pcr = p_stream->i_pcr;
401 /* Call the pace control */
402 if( p_input->stream.p_selected_program->i_synchro_state ==
404 input_ClockManageRef( p_input,
405 p_input->stream.p_selected_program,
409 /* The granulepos is the end date of the sample */
410 i_pts = ( p_stream->i_pcr < 0 ) ? 0 :
411 input_ClockGetTS( p_input, p_input->stream.p_selected_program,
414 /* Convert the granulepos into the next pcr */
415 Ogg_UpdatePCR( p_stream, p_oggpacket );
419 /* Convert the granulepos into the current pcr */
420 Ogg_UpdatePCR( p_stream, p_oggpacket );
422 if( p_stream->i_pcr >= 0 )
424 /* This is for streams where the granulepos of the header packets
425 * doesn't match these of the data packets (eg. ogg web radios). */
426 if( p_stream->i_previous_pcr == 0 &&
427 p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY * 9/100 )
428 p_input->stream.p_selected_program->i_synchro_state =
431 p_stream->i_previous_pcr = p_stream->i_pcr;
433 /* Call the pace control */
434 if( p_input->stream.p_selected_program->i_synchro_state ==
436 input_ClockManageRef( p_input,
437 p_input->stream.p_selected_program,
441 /* The granulepos is the start date of the sample */
442 i_pts = ( p_stream->i_pcr < 0 ) ? 0 :
443 input_ClockGetTS( p_input, p_input->stream.p_selected_program,
449 /* This stream isn't currently selected so we don't need to decode it,
450 * but we did need to store its pcr as it might be selected later on */
451 p_stream->b_activated = VLC_FALSE;
455 if( !( p_block = block_New( p_input, p_oggpacket->bytes ) ) )
460 if( p_stream->fmt.i_cat == AUDIO_ES )
461 p_block->i_dts = p_block->i_pts = i_pts;
462 else if( p_stream->fmt.i_cat == SPU_ES )
464 p_block->i_pts = i_pts;
467 else if( p_stream->fmt.i_codec == VLC_FOURCC( 't','h','e','o' ) )
468 p_block->i_dts = p_block->i_pts = i_pts;
471 p_block->i_dts = i_pts;
475 if( p_stream->fmt.i_codec != VLC_FOURCC( 'v','o','r','b' ) &&
476 p_stream->fmt.i_codec != VLC_FOURCC( 's','p','x',' ' ) &&
477 p_stream->fmt.i_codec != VLC_FOURCC( 'f','l','a','c' ) &&
478 p_stream->fmt.i_codec != VLC_FOURCC( 't','a','r','k' ) &&
479 p_stream->fmt.i_codec != VLC_FOURCC( 't','h','e','o' ) )
481 /* Remove the header from the packet */
482 i_header_len = (*p_oggpacket->packet & PACKET_LEN_BITS01) >> 6;
483 i_header_len |= (*p_oggpacket->packet & PACKET_LEN_BITS2) << 1;
486 p_block->i_buffer -= i_header_len;
489 if( p_stream->fmt.i_codec == VLC_FOURCC( 't','a','r','k' ) )
491 /* FIXME: the biggest hack I've ever done */
492 msg_Warn( p_input, "tark pts: "I64Fd", granule: "I64Fd,
493 p_block->i_pts, p_block->i_dts );
497 memcpy( p_block->p_buffer, p_oggpacket->packet + i_header_len,
498 p_oggpacket->bytes - i_header_len );
500 es_out_Send( p_input->p_es_out, p_stream->p_es, p_block );
503 /****************************************************************************
504 * Ogg_FindLogicalStreams: Find the logical streams embedded in the physical
505 * stream and fill p_ogg.
506 *****************************************************************************
507 * The initial page of a logical stream is marked as a 'bos' page.
508 * Furthermore, the Ogg specification mandates that grouped bitstreams begin
509 * together and all of the initial pages must appear before any data pages.
511 * On success this function returns VLC_SUCCESS.
512 ****************************************************************************/
513 static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
515 ogg_packet oggpacket;
519 #define p_stream p_ogg->pp_stream[p_ogg->i_streams - 1]
521 while( Ogg_ReadPage( p_input, p_ogg, &oggpage ) == VLC_SUCCESS )
523 if( ogg_page_bos( &oggpage ) )
526 /* All is wonderful in our fine fine little world.
527 * We found the beginning of our first logical stream. */
528 while( ogg_page_bos( &oggpage ) )
532 realloc( p_ogg->pp_stream, p_ogg->i_streams *
533 sizeof(logical_stream_t *) );
535 p_stream = malloc( sizeof(logical_stream_t) );
536 memset( p_stream, 0, sizeof(logical_stream_t) );
538 es_format_Init( &p_stream->fmt, 0, 0 );
539 p_stream->b_activated = VLC_TRUE;
541 /* Setup the logical stream */
542 p_stream->i_serial_no = ogg_page_serialno( &oggpage );
543 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
545 /* Extract the initial header from the first page and verify
546 * the codec type of tis Ogg bitstream */
547 if( ogg_stream_pagein( &p_stream->os, &oggpage ) < 0 )
549 /* error. stream version mismatch perhaps */
550 msg_Err( p_input, "Error reading first page of "
551 "Ogg bitstream data" );
555 /* FIXME: check return value */
556 ogg_stream_packetpeek( &p_stream->os, &oggpacket );
558 /* Check for Vorbis header */
559 if( oggpacket.bytes >= 7 &&
560 ! strncmp( &oggpacket.packet[1], "vorbis", 6 ) )
564 msg_Dbg( p_input, "found vorbis header" );
565 p_stream->fmt.i_cat = AUDIO_ES;
566 p_stream->fmt.i_codec = VLC_FOURCC( 'v','o','r','b' );
568 /* Signal that we want to keep a backup of the vorbis
569 * stream headers. They will be used when switching between
571 p_stream->b_force_backup = 1;
573 /* Cheat and get additionnal info ;) */
574 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
575 oggpack_adv( &opb, 88 );
576 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 8 );
577 p_stream->f_rate = p_stream->fmt.audio.i_rate =
578 oggpack_read( &opb, 32 );
579 oggpack_adv( &opb, 32 );
580 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
582 /* Check for Speex header */
583 else if( oggpacket.bytes >= 7 &&
584 ! strncmp( &oggpacket.packet[0], "Speex", 5 ) )
588 p_stream->fmt.i_cat = AUDIO_ES;
589 p_stream->fmt.i_codec = VLC_FOURCC( 's','p','x',' ' );
591 /* Signal that we want to keep a backup of the vorbis
592 * stream headers. They will be used when switching between
594 p_stream->b_force_backup = 1;
596 /* Cheat and get additionnal info ;) */
597 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
598 oggpack_adv( &opb, 224 );
599 oggpack_adv( &opb, 32 ); /* speex_version_id */
600 oggpack_adv( &opb, 32 ); /* header_size */
601 p_stream->f_rate = p_stream->fmt.audio.i_rate =
602 oggpack_read( &opb, 32 );
603 oggpack_adv( &opb, 32 ); /* mode */
604 oggpack_adv( &opb, 32 ); /* mode_bitstream_version */
605 p_stream->fmt.audio.i_channels = oggpack_read( &opb, 32 );
606 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
608 msg_Dbg( p_input, "found speex header, channels: %i, "
609 "rate: %i, bitrate: %i",
610 p_stream->fmt.audio.i_channels,
611 (int)p_stream->f_rate, p_stream->fmt.i_bitrate );
613 /* Check for Flac header */
614 else if( oggpacket.bytes >= 4 &&
615 ! strncmp( &oggpacket.packet[0], "fLaC", 4 ) )
617 msg_Dbg( p_input, "found Flac header" );
619 /* Grrrr!!!! Did they really have to put all the
620 * important info in the second header packet!!!
621 * (STREAMINFO metadata is in the following packet) */
622 p_stream->b_force_backup = 1;
624 p_stream->fmt.i_cat = AUDIO_ES;
625 p_stream->fmt.i_codec = VLC_FOURCC( 'f','l','a','c' );
627 /* Check for Theora header */
628 else if( oggpacket.bytes >= 7 &&
629 ! strncmp( &oggpacket.packet[1], "theora", 6 ) )
633 int i_fps_denominator;
634 int i_keyframe_frequency_force;
636 msg_Dbg( p_input, "found theora header" );
637 p_stream->fmt.i_cat = VIDEO_ES;
638 p_stream->fmt.i_codec = VLC_FOURCC( 't','h','e','o' );
640 /* Signal that we want to keep a backup of the vorbis
641 * stream headers. They will be used when switching between
643 p_stream->b_force_backup = 1;
645 /* Cheat and get additionnal info ;) */
646 bs_init( &bitstream, oggpacket.packet, oggpacket.bytes );
647 bs_skip( &bitstream, 56 );
648 bs_read( &bitstream, 8 ); /* major version num */
649 bs_read( &bitstream, 8 ); /* minor version num */
650 bs_read( &bitstream, 8 ); /* subminor version num */
651 bs_read( &bitstream, 16 ) /*<< 4*/; /* width */
652 bs_read( &bitstream, 16 ) /*<< 4*/; /* height */
653 bs_read( &bitstream, 24 ); /* frame width */
654 bs_read( &bitstream, 24 ); /* frame height */
655 bs_read( &bitstream, 8 ); /* x offset */
656 bs_read( &bitstream, 8 ); /* y offset */
658 i_fps_numerator = bs_read( &bitstream, 32 );
659 i_fps_denominator = bs_read( &bitstream, 32 );
660 bs_read( &bitstream, 24 ); /* aspect_numerator */
661 bs_read( &bitstream, 24 ); /* aspect_denominator */
662 i_keyframe_frequency_force = 1 << bs_read( &bitstream, 5 );
663 bs_read( &bitstream, 8 ); /* colorspace */
664 p_stream->fmt.i_bitrate = bs_read( &bitstream, 24 );
665 bs_read( &bitstream, 6 ); /* quality */
667 /* granule_shift = i_log( frequency_force -1 ) */
668 p_stream->i_theora_keyframe_granule_shift = 0;
669 i_keyframe_frequency_force--;
670 while( i_keyframe_frequency_force )
672 p_stream->i_theora_keyframe_granule_shift++;
673 i_keyframe_frequency_force >>= 1;
676 p_stream->f_rate = ((float)i_fps_numerator) /
679 "found theora header, bitrate: %i, rate: %f",
680 p_stream->fmt.i_bitrate, p_stream->f_rate );
682 /* Check for Tarkin header */
683 else if( oggpacket.bytes >= 7 &&
684 ! strncmp( &oggpacket.packet[1], "tarkin", 6 ) )
688 msg_Dbg( p_input, "found tarkin header" );
689 p_stream->fmt.i_cat = VIDEO_ES;
690 p_stream->fmt.i_codec = VLC_FOURCC( 't','a','r','k' );
692 /* Cheat and get additionnal info ;) */
693 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
694 oggpack_adv( &opb, 88 );
695 oggpack_adv( &opb, 104 );
696 p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
697 p_stream->f_rate = 2; /* FIXME */
699 "found tarkin header, bitrate: %i, rate: %f",
700 p_stream->fmt.i_bitrate, p_stream->f_rate );
702 else if( oggpacket.bytes >= 142 &&
703 !strncmp( &oggpacket.packet[1],
704 "Direct Show Samples embedded in Ogg", 35 ))
706 /* Old header type */
708 /* Check for video header (old format) */
709 if( GetDWLE((oggpacket.packet+96)) == 0x05589f80 &&
710 oggpacket.bytes >= 184 )
712 p_stream->fmt.i_cat = VIDEO_ES;
713 p_stream->fmt.i_codec =
714 VLC_FOURCC( oggpacket.packet[68],
715 oggpacket.packet[69],
716 oggpacket.packet[70],
717 oggpacket.packet[71] );
718 msg_Dbg( p_input, "found video header of type: %.4s",
719 (char *)&p_stream->fmt.i_codec );
721 p_stream->f_rate = 10000000.0 /
722 GetQWLE((oggpacket.packet+164));
723 p_stream->fmt.video.i_bits_per_pixel =
724 GetWLE((oggpacket.packet+182));
725 if( !p_stream->fmt.video.i_bits_per_pixel )
727 p_stream->fmt.video.i_bits_per_pixel = 24;
728 p_stream->fmt.video.i_width =
729 GetDWLE((oggpacket.packet+176));
730 p_stream->fmt.video.i_height =
731 GetDWLE((oggpacket.packet+180));
734 "fps: %f, width:%i; height:%i, bitcount:%i",
736 p_stream->fmt.video.i_width,
737 p_stream->fmt.video.i_height,
738 p_stream->fmt.video.i_bits_per_pixel);
741 /* Check for audio header (old format) */
742 else if( GetDWLE((oggpacket.packet+96)) == 0x05589F81 )
744 unsigned int i_extra_size;
745 unsigned int i_format_tag;
747 p_stream->fmt.i_cat = AUDIO_ES;
749 i_extra_size = GetWLE((oggpacket.packet+140));
752 p_stream->fmt.i_extra = i_extra_size;
753 p_stream->fmt.p_extra = malloc( i_extra_size );
754 memcpy( p_stream->fmt.p_extra,
755 oggpacket.packet + 142, i_extra_size );
758 i_format_tag = GetWLE((oggpacket.packet+124));
759 p_stream->fmt.audio.i_channels =
760 GetWLE((oggpacket.packet+126));
761 p_stream->f_rate = p_stream->fmt.audio.i_rate =
762 GetDWLE((oggpacket.packet+128));
763 p_stream->fmt.i_bitrate =
764 GetDWLE((oggpacket.packet+132)) * 8;
765 p_stream->fmt.audio.i_blockalign =
766 GetWLE((oggpacket.packet+136));
767 p_stream->fmt.audio.i_bitspersample =
768 GetWLE((oggpacket.packet+138));
770 switch( i_format_tag )
772 case WAVE_FORMAT_PCM:
773 p_stream->fmt.i_codec =
774 VLC_FOURCC( 'a', 'r', 'a', 'w' );
776 case WAVE_FORMAT_MPEG:
777 case WAVE_FORMAT_MPEGLAYER3:
778 p_stream->fmt.i_codec =
779 VLC_FOURCC( 'm', 'p', 'g', 'a' );
781 case WAVE_FORMAT_A52:
782 p_stream->fmt.i_codec =
783 VLC_FOURCC( 'a', '5', '2', ' ' );
785 case WAVE_FORMAT_WMA1:
786 p_stream->fmt.i_codec =
787 VLC_FOURCC( 'w', 'm', 'a', '1' );
789 case WAVE_FORMAT_WMA2:
790 p_stream->fmt.i_codec =
791 VLC_FOURCC( 'w', 'm', 'a', '2' );
794 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
795 ( i_format_tag >> 8 ) & 0xff,
796 i_format_tag & 0xff );
799 msg_Dbg( p_input, "found audio header of type: %.4s",
800 (char *)&p_stream->fmt.i_codec );
801 msg_Dbg( p_input, "audio:0x%4.4x channels:%d %dHz "
802 "%dbits/sample %dkb/s",
804 p_stream->fmt.audio.i_channels,
805 p_stream->fmt.audio.i_rate,
806 p_stream->fmt.audio.i_bitspersample,
807 p_stream->fmt.i_bitrate / 1024 );
812 msg_Dbg( p_input, "stream %d has an old header "
813 "but is of an unknown type", p_ogg->i_streams-1 );
818 else if( (*oggpacket.packet & PACKET_TYPE_BITS )
819 == PACKET_TYPE_HEADER &&
820 oggpacket.bytes >= (int)sizeof(stream_header)+1 )
822 stream_header *st = (stream_header *)(oggpacket.packet+1);
824 /* Check for video header (new format) */
825 if( !strncmp( st->streamtype, "video", 5 ) )
827 p_stream->fmt.i_cat = VIDEO_ES;
829 /* We need to get rid of the header packet */
830 ogg_stream_packetout( &p_stream->os, &oggpacket );
832 p_stream->fmt.i_codec =
833 VLC_FOURCC( st->subtype[0], st->subtype[1],
834 st->subtype[2], st->subtype[3] );
835 msg_Dbg( p_input, "found video header of type: %.4s",
836 (char *)&p_stream->fmt.i_codec );
838 p_stream->f_rate = 10000000.0 /
839 GetQWLE(&st->time_unit);
840 p_stream->fmt.video.i_bits_per_pixel =
841 GetWLE(&st->bits_per_sample);
842 p_stream->fmt.video.i_width =
843 GetDWLE(&st->sh.video.width);
844 p_stream->fmt.video.i_height =
845 GetDWLE(&st->sh.video.height);
848 "fps: %f, width:%i; height:%i, bitcount:%i",
850 p_stream->fmt.video.i_width,
851 p_stream->fmt.video.i_height,
852 p_stream->fmt.video.i_bits_per_pixel );
854 /* Check for audio header (new format) */
855 else if( !strncmp( st->streamtype, "audio", 5 ) )
860 p_stream->fmt.i_cat = AUDIO_ES;
862 /* We need to get rid of the header packet */
863 ogg_stream_packetout( &p_stream->os, &oggpacket );
865 memcpy( p_buffer, st->subtype, 4 );
867 i_format_tag = strtol(p_buffer,NULL,16);
868 p_stream->fmt.audio.i_channels =
869 GetWLE(&st->sh.audio.channels);
870 p_stream->f_rate = p_stream->fmt.audio.i_rate =
871 GetQWLE(&st->samples_per_unit);
872 p_stream->fmt.i_bitrate =
873 GetDWLE(&st->sh.audio.avgbytespersec) * 8;
874 p_stream->fmt.audio.i_blockalign =
875 GetWLE(&st->sh.audio.blockalign);
876 p_stream->fmt.audio.i_bitspersample =
877 GetWLE(&st->bits_per_sample);
879 switch( i_format_tag )
881 case WAVE_FORMAT_PCM:
882 p_stream->fmt.i_codec =
883 VLC_FOURCC( 'a', 'r', 'a', 'w' );
885 case WAVE_FORMAT_MPEG:
886 case WAVE_FORMAT_MPEGLAYER3:
887 p_stream->fmt.i_codec =
888 VLC_FOURCC( 'm', 'p', 'g', 'a' );
890 case WAVE_FORMAT_A52:
891 p_stream->fmt.i_codec =
892 VLC_FOURCC( 'a', '5', '2', ' ' );
894 case WAVE_FORMAT_WMA1:
895 p_stream->fmt.i_codec =
896 VLC_FOURCC( 'w', 'm', 'a', '1' );
898 case WAVE_FORMAT_WMA2:
899 p_stream->fmt.i_codec =
900 VLC_FOURCC( 'w', 'm', 'a', '2' );
903 p_stream->fmt.i_codec = VLC_FOURCC( 'm', 's',
904 ( i_format_tag >> 8 ) & 0xff,
905 i_format_tag & 0xff );
908 msg_Dbg( p_input, "found audio header of type: %.4s",
909 (char *)&p_stream->fmt.i_codec );
910 msg_Dbg( p_input, "audio:0x%4.4x channels:%d %dHz "
911 "%dbits/sample %dkb/s",
913 p_stream->fmt.audio.i_channels,
914 p_stream->fmt.audio.i_rate,
915 p_stream->fmt.audio.i_bitspersample,
916 p_stream->fmt.i_bitrate / 1024 );
918 /* Check for text (subtitles) header */
919 else if( !strncmp(st->streamtype, "text", 4) )
921 /* We need to get rid of the header packet */
922 ogg_stream_packetout( &p_stream->os, &oggpacket );
924 msg_Dbg( p_input, "found text subtitles header" );
925 p_stream->fmt.i_cat = SPU_ES;
926 p_stream->fmt.i_codec = VLC_FOURCC('s','u','b','t');
927 p_stream->f_rate = 1000; /* granulepos is in milisec */
931 msg_Dbg( p_input, "stream %d has a header marker "
932 "but is of an unknown type", p_ogg->i_streams-1 );
939 msg_Dbg( p_input, "stream %d is of unknown type",
940 p_ogg->i_streams-1 );
945 if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
949 /* This is the first data page, which means we are now finished
950 * with the initial pages. We just need to store it in the relevant
952 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
954 if( ogg_stream_pagein( &p_ogg->pp_stream[i_stream]->os,
969 /*****************************************************************************
970 * Activate: initializes ogg demux structures
971 *****************************************************************************/
972 static int Activate( vlc_object_t * p_this )
974 input_thread_t *p_input = (input_thread_t *)p_this;
978 p_input->p_demux_data = NULL;
979 b_forced = ( ( *p_input->psz_demux )&&
980 ( !strncmp( p_input->psz_demux, "ogg", 10 ) ) ) ? 1 : 0;
982 /* Check if we are dealing with an ogg stream */
983 if( !b_forced && ( Ogg_Check( p_input ) != VLC_SUCCESS ) )
987 if( !( p_ogg = malloc( sizeof( demux_sys_t ) ) ) )
989 msg_Err( p_input, "out of memory" );
992 memset( p_ogg, 0, sizeof( demux_sys_t ) );
993 p_input->p_demux_data = p_ogg;
994 p_ogg->pp_stream = NULL;
996 /* Initialize the Ogg physical bitstream parser */
997 ogg_sync_init( &p_ogg->oy );
999 /* Set exported functions */
1000 p_input->pf_demux = Demux;
1001 p_input->pf_demux_control = Control;
1003 /* Initialize access plug-in structures. */
1004 if( p_input->i_mtu == 0 )
1006 /* Improve speed. */
1007 p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
1010 /* Create one program */
1011 vlc_mutex_lock( &p_input->stream.stream_lock );
1012 if( input_InitStream( p_input, 0 ) == -1)
1014 vlc_mutex_unlock( &p_input->stream.stream_lock );
1015 msg_Err( p_input, "cannot init stream" );
1018 if( input_AddProgram( p_input, 0, 0) == NULL )
1020 vlc_mutex_unlock( &p_input->stream.stream_lock );
1021 msg_Err( p_input, "cannot add program" );
1024 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
1025 vlc_mutex_unlock( &p_input->stream.stream_lock );
1027 /* Begnning of stream, tell the demux to look for elementary streams. */
1030 p_ogg->i_old_synchro_state = !SYNCHRO_REINIT;
1035 Deactivate( (vlc_object_t *)p_input );
1040 /****************************************************************************
1041 * Ogg_BeginningOfStream: Look for Beginning of Stream ogg pages and add
1042 * Elementary streams.
1043 ****************************************************************************/
1044 static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg)
1048 /* Find the logical streams embedded in the physical stream and
1049 * initialize our p_ogg structure. */
1050 if( Ogg_FindLogicalStreams( p_input, p_ogg ) != VLC_SUCCESS )
1052 msg_Warn( p_input, "couldn't find any ogg logical stream" );
1053 return VLC_EGENERIC;
1056 vlc_mutex_lock( &p_input->stream.stream_lock );
1057 p_input->stream.i_mux_rate = 0;
1058 vlc_mutex_unlock( &p_input->stream.stream_lock );
1060 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1062 #define p_stream p_ogg->pp_stream[i_stream]
1063 if( p_stream->fmt.i_codec != VLC_FOURCC('f','l','a','c') )
1064 p_stream->p_es = es_out_Add( p_input->p_es_out, &p_stream->fmt );
1066 vlc_mutex_lock( &p_input->stream.stream_lock );
1067 p_input->stream.i_mux_rate += (p_stream->fmt.i_bitrate / ( 8 * 50 ));
1068 vlc_mutex_unlock( &p_input->stream.stream_lock );
1070 p_stream->i_pcr = p_stream->i_previous_pcr = -1;
1071 p_stream->b_reinit = 0;
1078 /****************************************************************************
1079 * Ogg_EndOfStream: clean up the ES when an End of Stream is detected.
1080 ****************************************************************************/
1081 static void Ogg_EndOfStream( input_thread_t *p_input, demux_sys_t *p_ogg )
1085 #define p_stream p_ogg->pp_stream[i_stream]
1086 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1088 es_out_Del( p_input->p_es_out, p_stream->p_es );
1090 vlc_mutex_lock( &p_input->stream.stream_lock );
1091 p_input->stream.i_mux_rate -= (p_stream->fmt.i_bitrate / ( 8 * 50 ));
1092 vlc_mutex_unlock( &p_input->stream.stream_lock );
1094 ogg_stream_clear( &p_ogg->pp_stream[i_stream]->os );
1095 for( j = 0; j < p_ogg->pp_stream[i_stream]->i_packets_backup; j++ )
1097 free( p_ogg->pp_stream[i_stream]->p_packets_backup[j].packet );
1099 if( p_ogg->pp_stream[i_stream]->p_packets_backup)
1100 free( p_ogg->pp_stream[i_stream]->p_packets_backup );
1102 free( p_ogg->pp_stream[i_stream] );
1107 if( p_ogg->pp_stream ) free( p_ogg->pp_stream );
1108 p_ogg->pp_stream = NULL;
1109 p_ogg->i_streams = 0;
1112 /*****************************************************************************
1113 * Deactivate: frees unused data
1114 *****************************************************************************/
1115 static void Deactivate( vlc_object_t *p_this )
1117 input_thread_t *p_input = (input_thread_t *)p_this;
1118 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
1122 /* Cleanup the bitstream parser */
1123 ogg_sync_clear( &p_ogg->oy );
1125 Ogg_EndOfStream( p_input, p_ogg );
1131 /*****************************************************************************
1132 * Demux: reads and demuxes data packets
1133 *****************************************************************************
1134 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1135 *****************************************************************************/
1136 static int Demux( input_thread_t * p_input )
1138 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data;
1140 ogg_packet oggpacket;
1143 #define p_stream p_ogg->pp_stream[i_stream]
1145 if( p_ogg->i_eos == p_ogg->i_streams )
1149 msg_Dbg( p_input, "end of a group of logical streams" );
1150 Ogg_EndOfStream( p_input, p_ogg );
1153 if( Ogg_BeginningOfStream( p_input, p_ogg ) != VLC_SUCCESS ) return 0;
1156 msg_Dbg( p_input, "beginning of a group of logical streams" );
1158 p_input->stream.p_selected_program->i_synchro_state = SYNCHRO_REINIT;
1159 input_ClockManageRef( p_input, p_input->stream.p_selected_program, 0 );
1162 if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
1164 msg_Warn( p_input, "synchro reinit" );
1166 if( p_ogg->i_old_synchro_state != SYNCHRO_REINIT )
1167 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1169 /* we'll trash all the data until we find the next pcr */
1170 p_stream->b_reinit = 1;
1171 p_stream->i_pcr = -1;
1172 p_stream->i_interpolated_pcr = -1;
1173 ogg_stream_reset( &p_stream->os );
1175 if( p_ogg->i_old_synchro_state != SYNCHRO_REINIT )
1176 ogg_sync_reset( &p_ogg->oy );
1180 * Demux an ogg page from the stream
1182 if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
1187 /* Test for End of Stream */
1188 if( ogg_page_eos( &oggpage ) ) p_ogg->i_eos++;
1191 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1193 if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
1196 while( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
1198 if( p_stream->b_reinit )
1200 /* If synchro is re-initialized we need to drop all the packets
1201 * until we find a new dated one. */
1202 Ogg_UpdatePCR( p_stream, &oggpacket );
1204 if( p_stream->i_pcr >= 0 )
1206 p_stream->b_reinit = 0;
1210 p_stream->i_interpolated_pcr = -1;
1214 /* An Ogg/vorbis packet contains an end date granulepos */
1215 if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) ||
1216 p_stream->fmt.i_codec == VLC_FOURCC( 's','p','x',' ' ) ||
1217 p_stream->fmt.i_codec == VLC_FOURCC( 'f','l','a','c' ) )
1219 if( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
1221 Ogg_DecodePacket( p_input, p_stream, &oggpacket );
1225 input_ClockManageRef( p_input,
1226 p_input->stream.p_selected_program,
1233 Ogg_DecodePacket( p_input, p_stream, &oggpacket );
1238 i_stream = 0; p_ogg->i_pcr = -1;
1239 for( ; i_stream < p_ogg->i_streams; i_stream++ )
1241 if( p_stream->fmt.i_cat == SPU_ES )
1243 if( p_stream->i_interpolated_pcr < 0 )
1246 if( p_ogg->i_pcr < 0 || p_stream->i_interpolated_pcr < p_ogg->i_pcr )
1247 p_ogg->i_pcr = p_stream->i_interpolated_pcr;
1250 if( p_ogg->i_pcr >= 0 )
1252 input_ClockManageRef( p_input, p_input->stream.p_selected_program,
1258 p_ogg->i_old_synchro_state =
1259 p_input->stream.p_selected_program->i_synchro_state;
1264 /*****************************************************************************
1266 *****************************************************************************/
1267 static int Control( input_thread_t *p_input, int i_query, va_list args )
1269 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data;
1274 case DEMUX_GET_TIME:
1275 pi64 = (int64_t*)va_arg( args, int64_t * );
1276 *pi64 = p_ogg->i_pcr * 100 / 9;
1280 return demux_vaControlDefault( p_input, i_query, args );