1 /*****************************************************************************
2 * ogg.c : ogg stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: ogg.c,v 1.25 2003/05/05 22:23:34 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 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
31 #include <vlc/input.h>
33 #include <sys/types.h>
37 #include <codecs.h> /* BITMAPINFOHEADER, WAVEFORMATEX */
39 #define OGG_BLOCK_SIZE 4096
40 #define PAGES_READ_ONCE 1
42 /*****************************************************************************
43 * Definitions of structures and functions used by this plugins
44 *****************************************************************************/
45 typedef struct logical_stream_s
47 ogg_stream_state os; /* logical stream of packets */
50 int i_cat; /* AUDIO_ES, VIDEO_ES */
52 vlc_fourcc_t i_fourcc;
55 es_descriptor_t *p_es;
56 int b_selected; /* newly selected */
58 /* the header of some logical streams (eg vorbis) contain essential
59 * data for the decoder. We back them up here in case we need to re-feed
60 * them to the decoder. */
63 ogg_packet *p_packets_backup;
65 /* program clock reference (in units of 90kHz) derived from the previous
68 mtime_t i_interpolated_pcr;
70 /* info from logical streams */
75 /* codec specific stuff */
76 BITMAPINFOHEADER *p_bih;
78 int i_theora_keyframe_granule_shift;
84 ogg_sync_state oy; /* sync and verify incoming physical bitstream */
86 int i_streams; /* number of logical bitstreams */
87 logical_stream_t **pp_stream; /* pointer to an array of logical streams */
89 /* current audio and video es */
90 logical_stream_t *p_stream_video;
91 logical_stream_t *p_stream_audio;
92 logical_stream_t *p_stream_spu;
94 /* program clock reference (in units of 90kHz) derived from the pcr of
103 /* OggDS headers for the new header format (used in ogm files) */
104 typedef struct stream_header_video
108 } stream_header_video;
110 typedef struct stream_header_audio
112 ogg_int16_t channels;
113 ogg_int16_t blockalign;
114 ogg_int32_t avgbytespersec;
115 } stream_header_audio;
117 typedef struct stream_header
122 ogg_int32_t size; /* size of the structure */
124 ogg_int64_t time_unit; /* in reference time */
125 ogg_int64_t samples_per_unit;
126 ogg_int32_t default_len; /* in media time */
128 ogg_int32_t buffersize;
129 ogg_int16_t bits_per_sample;
134 stream_header_video video;
136 stream_header_audio audio;
140 /* Some defines from OggDS */
141 #define PACKET_TYPE_HEADER 0x01
142 #define PACKET_TYPE_BITS 0x07
143 #define PACKET_LEN_BITS01 0xc0
144 #define PACKET_LEN_BITS2 0x02
145 #define PACKET_IS_SYNCPOINT 0x08
147 /* Some functions to manipulate memory */
148 static uint16_t GetWLE( uint8_t *p_buff )
150 return( (p_buff[0]) + ( p_buff[1] <<8 ) );
153 static uint32_t GetDWLE( uint8_t *p_buff )
155 return( p_buff[0] + ( p_buff[1] <<8 ) +
156 ( p_buff[2] <<16 ) + ( p_buff[3] <<24 ) );
159 static uint64_t GetQWLE( uint8_t *p_buff )
161 return( GetDWLE( p_buff ) + ( ((uint64_t)GetDWLE( p_buff + 4 )) << 32 ) );
163 /*****************************************************************************
165 *****************************************************************************/
166 static int Activate ( vlc_object_t * );
167 static void Deactivate( vlc_object_t * );
168 static int Demux ( input_thread_t * );
170 /* Stream managment */
171 static int Ogg_StreamStart ( input_thread_t *, demux_sys_t *, int );
172 static void Ogg_StreamStop ( input_thread_t *, demux_sys_t *, int );
174 /* Bitstream manipulation */
175 static int Ogg_Check ( input_thread_t *p_input );
176 static int Ogg_ReadPage ( input_thread_t *, demux_sys_t *, ogg_page * );
177 static void Ogg_UpdatePCR ( logical_stream_t *, ogg_packet * );
178 static void Ogg_DecodePacket ( input_thread_t *p_input,
179 logical_stream_t *p_stream, ogg_packet * );
180 static int Ogg_FindLogicalStreams( input_thread_t *p_input,
181 demux_sys_t *p_ogg );
183 /*****************************************************************************
185 *****************************************************************************/
187 set_description( _("ogg stream demuxer" ) );
188 set_capability( "demux", 50 );
189 set_callbacks( Activate, Deactivate );
190 add_shortcut( "ogg" );
193 /*****************************************************************************
195 *****************************************************************************/
196 static int Ogg_StreamStart( input_thread_t *p_input,
197 demux_sys_t *p_ogg, int i_stream )
199 #define p_stream p_ogg->pp_stream[i_stream]
200 if( !p_stream->p_es )
202 msg_Warn( p_input, "stream[%d] unselectable", i_stream );
205 if( p_stream->i_activated )
207 msg_Warn( p_input, "stream[%d] already selected", i_stream );
211 if( !p_stream->p_es->p_decoder_fifo )
213 vlc_mutex_lock( &p_input->stream.stream_lock );
214 input_SelectES( p_input, p_stream->p_es );
215 vlc_mutex_unlock( &p_input->stream.stream_lock );
217 p_stream->i_activated = p_stream->p_es->p_decoder_fifo ? 1 : 0;
219 /* Feed the backup header to the decoder */
220 if( !p_stream->b_force_backup )
223 for( i = 0; i < p_stream->i_packets_backup; i++ )
225 Ogg_DecodePacket( p_input, p_stream,
226 &p_stream->p_packets_backup[i] );
230 return( p_stream->i_activated );
234 static void Ogg_StreamStop( input_thread_t *p_input,
235 demux_sys_t *p_ogg, int i_stream )
237 #define p_stream p_ogg->pp_stream[i_stream]
239 if( !p_stream->i_activated )
241 msg_Warn( p_input, "stream[%d] already unselected", i_stream );
245 if( p_stream->p_es->p_decoder_fifo )
247 vlc_mutex_lock( &p_input->stream.stream_lock );
248 input_UnselectES( p_input, p_stream->p_es );
249 vlc_mutex_unlock( &p_input->stream.stream_lock );
252 p_stream->i_activated = 0;
257 /****************************************************************************
258 * Ogg_Check: Check we are dealing with an ogg stream.
259 ****************************************************************************/
260 static int Ogg_Check( input_thread_t *p_input )
263 int i_size = input_Peek( p_input, &p_peek, 4 );
265 /* Check for the Ogg capture pattern */
266 if( !(i_size>3) || !(p_peek[0] == 'O') || !(p_peek[1] == 'g') ||
267 !(p_peek[2] == 'g') || !(p_peek[3] == 'S') )
270 /* FIXME: Capture pattern might not be enough so we can also check for the
271 * the first complete page */
276 /****************************************************************************
277 * Ogg_ReadPage: Read a full Ogg page from the physical bitstream.
278 ****************************************************************************
279 * Returns VLC_SUCCESS if a page has been read. An error might happen if we
280 * are at the end of stream.
281 ****************************************************************************/
282 static int Ogg_ReadPage( input_thread_t *p_input, demux_sys_t *p_ogg,
283 ogg_page *p_oggpage )
286 data_packet_t *p_data;
289 while( ogg_sync_pageout( &p_ogg->oy, p_oggpage ) != 1 )
291 i_read = input_SplitBuffer( p_input, &p_data, OGG_BLOCK_SIZE );
295 p_buffer = ogg_sync_buffer( &p_ogg->oy, i_read );
296 p_input->p_vlc->pf_memcpy( p_buffer, p_data->p_payload_start, i_read );
297 ogg_sync_wrote( &p_ogg->oy, i_read );
298 input_DeletePacket( p_input->p_method_data, p_data );
304 /****************************************************************************
305 * Ogg_UpdatePCR: update the PCR (90kHz program clock reference) for the
307 ****************************************************************************/
308 static void Ogg_UpdatePCR( logical_stream_t *p_stream,
309 ogg_packet *p_oggpacket )
312 /* Convert the next granulepos into a pcr */
313 if( p_oggpacket->granulepos >= 0 )
315 if( p_stream->i_fourcc != VLC_FOURCC( 't','h','e','o' ) )
317 p_stream->i_pcr = p_oggpacket->granulepos * 90000
322 ogg_int64_t iframe = p_oggpacket->granulepos >>
323 p_stream->i_theora_keyframe_granule_shift;
324 ogg_int64_t pframe = p_oggpacket->granulepos -
325 ( iframe << p_stream->i_theora_keyframe_granule_shift );
327 p_stream->i_pcr = ( iframe + pframe ) * 90000
331 p_stream->i_interpolated_pcr = p_stream->i_pcr;
335 /* FIXME: ffmpeg doesn't like null pts */
336 if( p_stream->i_cat == VIDEO_ES )
337 /* 1 frame per packet */
338 p_stream->i_pcr += (90000 / p_stream->f_rate);
340 p_stream->i_pcr = -1;
342 /* no granulepos available, try to interpolate the pcr.
343 * If we can't then don't touch the old value. */
344 if( p_stream->i_bitrate )
345 p_stream->i_interpolated_pcr += ( p_oggpacket->bytes * 90000
346 / p_stream->i_bitrate / 8 );
350 /****************************************************************************
351 * Ogg_DecodePacket: Decode an Ogg packet.
352 ****************************************************************************/
353 static void Ogg_DecodePacket( input_thread_t *p_input,
354 logical_stream_t *p_stream,
355 ogg_packet *p_oggpacket )
358 data_packet_t *p_data;
359 vlc_bool_t b_trash = VLC_FALSE;
360 int i_header_len = 0;
362 if( p_stream->b_force_backup )
364 /* Backup the ogg packet (likely an header packet) */
365 ogg_packet *p_packet_backup;
366 p_stream->i_packets_backup++;
367 p_stream->p_packets_backup =
368 realloc( p_stream->p_packets_backup, p_stream->i_packets_backup *
369 sizeof(ogg_packet) );
372 &p_stream->p_packets_backup[p_stream->i_packets_backup - 1];
374 p_packet_backup->bytes = p_oggpacket->bytes;
375 p_packet_backup->granulepos = p_oggpacket->granulepos;
376 p_packet_backup->packet = malloc( p_oggpacket->bytes );
377 if( !p_packet_backup->packet ) return;
378 memcpy( p_packet_backup->packet, p_oggpacket->packet,
379 p_oggpacket->bytes );
381 switch( p_stream->i_fourcc )
383 case VLC_FOURCC( 'v','o','r','b' ):
384 if( p_stream->i_packets_backup == 3 ) p_stream->b_force_backup = 0;
388 p_stream->b_force_backup = 0;
393 vlc_mutex_lock( &p_input->stream.control.control_lock );
394 if( p_stream->i_cat == AUDIO_ES && p_input->stream.control.b_mute )
398 vlc_mutex_unlock( &p_input->stream.control.control_lock );
400 if( !p_stream->p_es->p_decoder_fifo || b_trash )
402 /* This stream isn't currently selected so we don't need to decode it,
403 * but we do need to store its pcr as it might be selected later on. */
404 Ogg_UpdatePCR( p_stream, p_oggpacket );
409 if( !( p_pes = input_NewPES( p_input->p_method_data ) ) )
413 if( !( p_data = input_NewPacket( p_input->p_method_data,
414 p_oggpacket->bytes ) ) )
416 input_DeletePES( p_input->p_method_data, p_pes );
419 p_data->p_payload_end = p_data->p_payload_start + p_oggpacket->bytes;
421 /* Convert the pcr into a pts */
422 if( p_stream->i_cat != SPU_ES )
424 p_pes->i_pts = ( p_stream->i_pcr < 0 ) ? 0 :
425 input_ClockGetTS( p_input, p_input->stream.p_selected_program,
430 /* Of course subtitles had to be different! */
431 p_pes->i_pts = ( p_oggpacket->granulepos < 0 ) ? 0 :
432 input_ClockGetTS( p_input, p_input->stream.p_selected_program,
433 p_oggpacket->granulepos * 90000 /
437 /* Convert the next granulepos into a pcr */
438 Ogg_UpdatePCR( p_stream, p_oggpacket );
440 p_pes->i_nb_data = 1;
441 p_pes->i_dts = p_oggpacket->granulepos;
442 p_pes->p_first = p_pes->p_last = p_data;
443 p_pes->i_pes_size = p_oggpacket->bytes;
445 if( p_stream->i_fourcc != VLC_FOURCC( 'v','o','r','b' ) &&
446 p_stream->i_fourcc != VLC_FOURCC( 't','a','r','k' ) &&
447 p_stream->i_fourcc != VLC_FOURCC( 't','h','e','o' ) )
449 /* Remove the header from the packet */
450 i_header_len = (*p_oggpacket->packet & PACKET_LEN_BITS01) >> 6;
451 i_header_len |= (*p_oggpacket->packet & PACKET_LEN_BITS2) << 1;
454 p_pes->i_pes_size -= i_header_len;
458 if( p_stream->i_fourcc == VLC_FOURCC( 't','a','r','k' ) )
460 /* FIXME: the biggest hack I've ever done */
461 msg_Warn( p_input, "tark pts: "I64Fd", granule: "I64Fd,
462 p_pes->i_pts, p_pes->i_dts );
466 memcpy( p_data->p_payload_start,
467 p_oggpacket->packet + i_header_len,
468 p_oggpacket->bytes - i_header_len );
470 p_data->p_payload_end = p_data->p_payload_start + p_pes->i_pes_size;
471 p_data->b_discard_payload = 0;
473 input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
476 /****************************************************************************
477 * Ogg_FindLogicalStreams: Find the logical streams embedded in the physical
478 * stream and fill p_ogg.
479 *****************************************************************************
480 * The initial page of a logical stream is marked as a 'bos' page.
481 * Furthermore, the Ogg specification mandates that grouped bitstreams begin
482 * together and all of the initial pages must appear before any data pages.
484 * On success this function returns VLC_SUCCESS.
485 ****************************************************************************/
486 static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
488 ogg_packet oggpacket;
492 while( Ogg_ReadPage( p_input, p_ogg, &oggpage ) == VLC_SUCCESS )
494 if( ogg_page_bos( &oggpage ) )
497 /* All is wonderful in our fine fine little world.
498 * We found the beginning of our first logical stream. */
499 while( ogg_page_bos( &oggpage ) )
503 realloc( p_ogg->pp_stream, p_ogg->i_streams *
504 sizeof(logical_stream_t *) );
506 #define p_stream p_ogg->pp_stream[p_ogg->i_streams - 1]
508 p_stream = malloc( sizeof(logical_stream_t) );
509 memset( p_stream, 0, sizeof(logical_stream_t) );
511 /* Setup the logical stream */
512 p_stream->i_serial_no = ogg_page_serialno( &oggpage );
513 ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
515 /* Extract the initial header from the first page and verify
516 * the codec type of tis Ogg bitstream */
517 if( ogg_stream_pagein( &p_stream->os, &oggpage ) < 0 )
519 /* error. stream version mismatch perhaps */
520 msg_Err( p_input, "Error reading first page of "
521 "Ogg bitstream data" );
525 /* FIXME: check return value */
526 ogg_stream_packetpeek( &p_stream->os, &oggpacket );
528 /* Check for Vorbis header */
529 if( oggpacket.bytes >= 7 &&
530 ! strncmp( &oggpacket.packet[1], "vorbis", 6 ) )
534 msg_Dbg( p_input, "found vorbis header" );
535 p_stream->i_cat = AUDIO_ES;
536 p_stream->i_fourcc = VLC_FOURCC( 'v','o','r','b' );
538 /* Signal that we want to keep a backup of the vorbis
539 * stream headers. They will be used when switching between
541 p_stream->b_force_backup = 1;
543 /* Cheat and get additionnal info ;) */
544 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
545 oggpack_adv( &opb, 96 );
546 p_stream->f_rate = oggpack_read( &opb, 32 );
547 oggpack_adv( &opb, 32 );
548 p_stream->i_bitrate = oggpack_read( &opb, 32 );
550 char title[sizeof("Stream") + 10];
551 input_info_category_t *p_cat;
552 sprintf( title, "Stream %d", p_ogg->i_streams );
553 p_cat = input_InfoCategory( p_input, title );
554 input_AddInfo( p_cat, _("Type"), _("Audio") );
555 input_AddInfo( p_cat, _("Codec"), _("Vorbis") );
556 input_AddInfo( p_cat, _("Sample Rate"), "%f",
558 input_AddInfo( p_cat, _("Bit Rate"), "%d",
559 p_stream->i_bitrate );
562 /* Check for Theora header */
563 else if( oggpacket.bytes >= 7 &&
564 ! strncmp( &oggpacket.packet[1], "theora", 6 ) )
569 int i_fps_denominator;
570 int i_keyframe_frequency_force;
573 msg_Dbg( p_input, "found theora header" );
575 p_stream->i_cat = VIDEO_ES;
576 p_stream->i_fourcc = VLC_FOURCC( 't','h','e','o' );
578 /* Cheat and get additionnal info ;) */
579 oggpackB_readinit(&opb, oggpacket.packet, oggpacket.bytes);
580 oggpackB_adv( &opb, 56 );
581 oggpackB_read( &opb, 8 ); /* major version num */
582 oggpackB_read( &opb, 8 ); /* minor version num */
583 oggpackB_read( &opb, 8 ); /* subminor version num */
584 oggpackB_read( &opb, 16 ) /*<< 4*/; /* width */
585 oggpackB_read( &opb, 16 ) /*<< 4*/; /* height */
586 i_fps_numerator = oggpackB_read( &opb, 32 );
587 i_fps_denominator = oggpackB_read( &opb, 32 );
588 oggpackB_read( &opb, 24 ); /* aspect_numerator */
589 oggpackB_read( &opb, 24 ); /* aspect_denominator */
590 i_keyframe_frequency_force = 1 << oggpackB_read( &opb, 5 );
591 p_stream->i_bitrate = oggpackB_read( &opb, 24 );
592 oggpackB_read(&opb,6); /* quality */
594 /* granule_shift = i_log( frequency_force -1 ) */
595 p_stream->i_theora_keyframe_granule_shift = 0;
596 i_keyframe_frequency_force--;
597 while( i_keyframe_frequency_force )
599 p_stream->i_theora_keyframe_granule_shift++;
600 i_keyframe_frequency_force >>= 1;
603 p_stream->f_rate = (float)i_fps_numerator /
606 "found theora header, bitrate: %i, rate: %f",
607 p_stream->i_bitrate, p_stream->f_rate );
609 char title[sizeof("Stream") + 10];
610 input_info_category_t *p_cat;
611 sprintf( title, "Stream %d", p_ogg->i_streams );
612 p_cat = input_InfoCategory( p_input, title );
613 input_AddInfo( p_cat, _("Type"), _("Video") );
614 input_AddInfo( p_cat, _("Codec"), _("Theora") );
615 input_AddInfo( p_cat, _("Frame Rate"), "%f",
617 input_AddInfo( p_cat, _("Bit Rate"), "%d",
618 p_stream->i_bitrate );
620 #else /* HAVE_OGGPACKB */
621 msg_Dbg( p_input, "the ogg demuxer has been compiled "
622 "without support for the oggpackB extension."
623 "The theora stream won't be decoded." );
627 #endif /* HAVE_OGGPACKB */
629 /* Check for Tarkin header */
630 else if( oggpacket.bytes >= 7 &&
631 ! strncmp( &oggpacket.packet[1], "tarkin", 6 ) )
635 msg_Dbg( p_input, "found tarkin header" );
636 p_stream->i_cat = VIDEO_ES;
637 p_stream->i_fourcc = VLC_FOURCC( 't','a','r','k' );
639 /* Cheat and get additionnal info ;) */
640 oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
641 oggpack_adv( &opb, 88 );
642 oggpack_adv( &opb, 104 );
643 p_stream->i_bitrate = oggpack_read( &opb, 32 );
644 p_stream->f_rate = 2; /* FIXME */
646 "found tarkin header, bitrate: %i, rate: %f",
647 p_stream->i_bitrate, p_stream->f_rate );
649 char title[sizeof("Stream") + 10];
650 input_info_category_t *p_cat;
651 sprintf( title, "Stream %d", p_ogg->i_streams );
652 p_cat = input_InfoCategory( p_input, title );
653 input_AddInfo( p_cat, _("Type"), _("Video") );
654 input_AddInfo( p_cat, _("Codec"), _("tarkin") );
655 input_AddInfo( p_cat, _("Sample Rate"), "%f",
657 input_AddInfo( p_cat, _("Bit Rate"), "%d",
658 p_stream->i_bitrate );
662 else if( oggpacket.bytes >= 142 &&
663 !strncmp( &oggpacket.packet[1],
664 "Direct Show Samples embedded in Ogg", 35 ))
666 /* Old header type */
668 /* Check for video header (old format) */
669 if( GetDWLE((oggpacket.packet+96)) == 0x05589f80 &&
670 oggpacket.bytes >= 184 )
672 p_stream->i_cat = VIDEO_ES;
674 p_stream->p_bih = (BITMAPINFOHEADER *)
675 malloc( sizeof(BITMAPINFOHEADER) );
676 if( !p_stream->p_bih )
678 /* Mem allocation error, just ignore the stream */
683 p_stream->p_bih->biSize = sizeof(BITMAPINFOHEADER);
684 p_stream->p_bih->biCompression= p_stream->i_fourcc =
685 VLC_FOURCC( oggpacket.packet[68],
686 oggpacket.packet[69],
687 oggpacket.packet[70],
688 oggpacket.packet[71] );
689 msg_Dbg( p_input, "found video header of type: %.4s",
690 (char *)&p_stream->i_fourcc );
692 p_stream->f_rate = 10000000.0 /
693 GetQWLE((oggpacket.packet+164));
694 p_stream->p_bih->biBitCount =
695 GetWLE((oggpacket.packet+182));
696 if( !p_stream->p_bih->biBitCount )
697 p_stream->p_bih->biBitCount=24; // hack, FIXME
698 p_stream->p_bih->biWidth =
699 GetDWLE((oggpacket.packet+176));
700 p_stream->p_bih->biHeight =
701 GetDWLE((oggpacket.packet+180));
702 p_stream->p_bih->biPlanes= 1 ;
703 p_stream->p_bih->biSizeImage =
704 (p_stream->p_bih->biBitCount >> 3) *
705 p_stream->p_bih->biWidth *
706 p_stream->p_bih->biHeight;
709 "fps: %f, width:%i; height:%i, bitcount:%i",
710 p_stream->f_rate, p_stream->p_bih->biWidth,
711 p_stream->p_bih->biHeight,
712 p_stream->p_bih->biBitCount);
714 char title[sizeof("Stream") + 10];
715 input_info_category_t *p_cat;
716 sprintf( title, "Stream %d", p_ogg->i_streams );
717 p_cat = input_InfoCategory( p_input, title );
718 input_AddInfo( p_cat, _("Type"), _("Video") );
719 input_AddInfo( p_cat, _("Codec"), "%.4s",
720 (char *)&p_stream->i_fourcc );
721 input_AddInfo( p_cat, _("Frame Rate"), "%f",
723 input_AddInfo( p_cat, _("Bit Count"), "%d",
724 p_stream->p_bih->biBitCount );
725 input_AddInfo( p_cat, _("Width"), "%d",
726 p_stream->p_bih->biWidth );
727 input_AddInfo( p_cat, _("Height"), "%d",
728 p_stream->p_bih->biHeight );
730 p_stream->i_bitrate = 0;
732 /* Check for audio header (old format) */
733 else if( GetDWLE((oggpacket.packet+96)) == 0x05589F81 )
735 unsigned int i_extra_size;
737 p_stream->i_cat = AUDIO_ES;
739 i_extra_size = GetWLE((oggpacket.packet+140));
741 p_stream->p_wf = (WAVEFORMATEX *)
742 malloc( sizeof(WAVEFORMATEX) + i_extra_size );
743 if( !p_stream->p_wf )
745 /* Mem allocation error, just ignore the stream */
751 p_stream->p_wf->wFormatTag =
752 GetWLE((oggpacket.packet+124));
753 p_stream->p_wf->nChannels =
754 GetWLE((oggpacket.packet+126));
755 p_stream->f_rate = p_stream->p_wf->nSamplesPerSec =
756 GetDWLE((oggpacket.packet+128));
757 p_stream->i_bitrate = p_stream->p_wf->nAvgBytesPerSec =
758 GetDWLE((oggpacket.packet+132));
759 p_stream->i_bitrate *= 8;
760 p_stream->p_wf->nBlockAlign =
761 GetWLE((oggpacket.packet+136));
762 p_stream->p_wf->wBitsPerSample =
763 GetWLE((oggpacket.packet+138));
764 p_stream->p_wf->cbSize = i_extra_size;
766 if( i_extra_size > 0 )
767 memcpy( p_stream->p_wf+sizeof(WAVEFORMATEX),
768 oggpacket.packet+142, i_extra_size );
770 switch( p_stream->p_wf->wFormatTag )
772 case WAVE_FORMAT_PCM:
774 VLC_FOURCC( 'a', 'r', 'a', 'w' );
776 case WAVE_FORMAT_MPEG:
777 case WAVE_FORMAT_MPEGLAYER3:
779 VLC_FOURCC( 'm', 'p', 'g', 'a' );
781 case WAVE_FORMAT_A52:
783 VLC_FOURCC( 'a', '5', '2', ' ' );
785 case WAVE_FORMAT_WMA1:
787 VLC_FOURCC( 'w', 'm', 'a', '1' );
789 case WAVE_FORMAT_WMA2:
791 VLC_FOURCC( 'w', 'm', 'a', '2' );
794 p_stream->i_fourcc = VLC_FOURCC( 'm', 's',
795 ( p_stream->p_wf->wFormatTag >> 8 ) & 0xff,
796 p_stream->p_wf->wFormatTag & 0xff );
799 msg_Dbg( p_input, "found audio header of type: %.4s",
800 (char *)&p_stream->i_fourcc );
801 msg_Dbg( p_input, "audio:0x%4.4x channels:%d %dHz "
802 "%dbits/sample %dkb/s",
803 p_stream->p_wf->wFormatTag,
804 p_stream->p_wf->nChannels,
805 p_stream->p_wf->nSamplesPerSec,
806 p_stream->p_wf->wBitsPerSample,
807 p_stream->p_wf->nAvgBytesPerSec * 8 / 1024 );
809 char title[sizeof("Stream") + 10];
810 input_info_category_t *p_cat;
811 sprintf( title, "Stream %d", p_ogg->i_streams );
812 p_cat = input_InfoCategory( p_input, title );
813 input_AddInfo( p_cat, _("Type"), _("Audio") );
814 input_AddInfo( p_cat, _("Codec"), "%.4s",
815 (char *)&p_stream->i_fourcc );
816 input_AddInfo( p_cat, _("Sample Rate"), "%d",
817 p_stream->p_wf->nSamplesPerSec );
818 input_AddInfo( p_cat, _("Bit Rate"), "%d",
819 p_stream->p_wf->nAvgBytesPerSec * 8
821 input_AddInfo( p_cat, _("Channels"), "%d",
822 p_stream->p_wf->nChannels );
823 input_AddInfo( p_cat, _("Bits per Sample"), "%d",
824 p_stream->p_wf->wBitsPerSample );
830 msg_Dbg( p_input, "stream %d has an old header "
831 "but is of an unknown type", p_ogg->i_streams-1 );
836 else if( (*oggpacket.packet & PACKET_TYPE_BITS )
837 == PACKET_TYPE_HEADER &&
838 oggpacket.bytes >= (int)sizeof(stream_header)+1 )
840 stream_header *st = (stream_header *)(oggpacket.packet+1);
842 /* Check for video header (new format) */
843 if( !strncmp( st->streamtype, "video", 5 ) )
845 p_stream->i_cat = VIDEO_ES;
847 /* We need to get rid of the header packet */
848 ogg_stream_packetout( &p_stream->os, &oggpacket );
850 p_stream->p_bih = (BITMAPINFOHEADER *)
851 malloc( sizeof(BITMAPINFOHEADER) );
852 if( !p_stream->p_bih )
854 /* Mem allocation error, just ignore the stream */
859 p_stream->p_bih->biSize = sizeof(BITMAPINFOHEADER);
860 p_stream->p_bih->biCompression=
861 p_stream->i_fourcc = VLC_FOURCC( st->subtype[0],
865 msg_Dbg( p_input, "found video header of type: %.4s",
866 (char *)&p_stream->i_fourcc );
868 p_stream->f_rate = 10000000.0 /
869 GetQWLE((uint8_t *)&st->time_unit);
870 p_stream->p_bih->biBitCount =
871 GetWLE((uint8_t *)&st->bits_per_sample);
872 p_stream->p_bih->biWidth =
873 GetDWLE((uint8_t *)&st->sh.video.width);
874 p_stream->p_bih->biHeight =
875 GetDWLE((uint8_t *)&st->sh.video.height);
876 p_stream->p_bih->biPlanes= 1 ;
877 p_stream->p_bih->biSizeImage =
878 (p_stream->p_bih->biBitCount >> 3) *
879 p_stream->p_bih->biWidth *
880 p_stream->p_bih->biHeight;
883 "fps: %f, width:%i; height:%i, bitcount:%i",
884 p_stream->f_rate, p_stream->p_bih->biWidth,
885 p_stream->p_bih->biHeight,
886 p_stream->p_bih->biBitCount);
889 char title[sizeof("Stream") + 10];
890 input_info_category_t *p_cat;
891 sprintf( title, "Stream %d", p_ogg->i_streams );
892 p_cat = input_InfoCategory( p_input, title );
893 input_AddInfo( p_cat, _("Type"), _("Video") );
894 input_AddInfo( p_cat, _("Codec"), "%.4s",
895 (char *)&p_stream->i_fourcc );
896 input_AddInfo( p_cat, _("Frame Rate"), "%f",
898 input_AddInfo( p_cat, _("Bit Count"), "%d",
899 p_stream->p_bih->biBitCount );
900 input_AddInfo( p_cat, _("Width"), "%d",
901 p_stream->p_bih->biWidth );
902 input_AddInfo( p_cat, _("Height"), "%d",
903 p_stream->p_bih->biHeight );
905 p_stream->i_bitrate = 0;
907 /* Check for audio header (new format) */
908 else if( !strncmp( st->streamtype, "audio", 5 ) )
912 p_stream->i_cat = AUDIO_ES;
914 /* We need to get rid of the header packet */
915 ogg_stream_packetout( &p_stream->os, &oggpacket );
917 p_stream->p_wf = (WAVEFORMATEX *)
918 malloc( sizeof(WAVEFORMATEX) );
919 if( !p_stream->p_wf )
921 /* Mem allocation error, just ignore the stream */
927 memcpy( p_buffer, st->subtype, 4 );
929 p_stream->p_wf->wFormatTag = strtol(p_buffer,NULL,16);
930 p_stream->p_wf->nChannels =
931 GetWLE((uint8_t *)&st->sh.audio.channels);
932 p_stream->f_rate = p_stream->p_wf->nSamplesPerSec =
933 GetQWLE((uint8_t *)&st->samples_per_unit);
934 p_stream->i_bitrate = p_stream->p_wf->nAvgBytesPerSec =
935 GetDWLE((uint8_t *)&st->sh.audio.avgbytespersec);
936 p_stream->i_bitrate *= 8;
937 p_stream->p_wf->nBlockAlign =
938 GetWLE((uint8_t *)&st->sh.audio.blockalign);
939 p_stream->p_wf->wBitsPerSample =
940 GetWLE((uint8_t *)&st->bits_per_sample);
941 p_stream->p_wf->cbSize = 0;
943 switch( p_stream->p_wf->wFormatTag )
945 case WAVE_FORMAT_PCM:
947 VLC_FOURCC( 'a', 'r', 'a', 'w' );
949 case WAVE_FORMAT_MPEG:
950 case WAVE_FORMAT_MPEGLAYER3:
952 VLC_FOURCC( 'm', 'p', 'g', 'a' );
954 case WAVE_FORMAT_A52:
956 VLC_FOURCC( 'a', '5', '2', ' ' );
958 case WAVE_FORMAT_WMA1:
960 VLC_FOURCC( 'w', 'm', 'a', '1' );
962 case WAVE_FORMAT_WMA2:
964 VLC_FOURCC( 'w', 'm', 'a', '2' );
967 p_stream->i_fourcc = VLC_FOURCC( 'm', 's',
968 ( p_stream->p_wf->wFormatTag >> 8 ) & 0xff,
969 p_stream->p_wf->wFormatTag & 0xff );
972 msg_Dbg( p_input, "found audio header of type: %.4s",
973 (char *)&p_stream->i_fourcc );
974 msg_Dbg( p_input, "audio:0x%4.4x channels:%d %dHz "
975 "%dbits/sample %dkb/s",
976 p_stream->p_wf->wFormatTag,
977 p_stream->p_wf->nChannels,
978 p_stream->p_wf->nSamplesPerSec,
979 p_stream->p_wf->wBitsPerSample,
980 p_stream->p_wf->nAvgBytesPerSec * 8 / 1024 );
982 char title[sizeof("Stream") + 10];
983 input_info_category_t *p_cat;
984 sprintf( title, "Stream %d", p_ogg->i_streams );
985 p_cat = input_InfoCategory( p_input, title );
986 input_AddInfo( p_cat, _("Type"), _("Audio") );
987 input_AddInfo( p_cat, _("Codec"), "%.4s",
988 (char *)&p_stream->i_fourcc );
989 input_AddInfo( p_cat, _("Sample Rate"), "%d",
990 p_stream->p_wf->nSamplesPerSec );
991 input_AddInfo( p_cat, _("Bit Rate"), "%d",
992 p_stream->p_wf->nAvgBytesPerSec * 8
994 input_AddInfo( p_cat, _("Channels"), "%d",
995 p_stream->p_wf->nChannels );
996 input_AddInfo( p_cat, _("Bits per Sample"), "%d",
997 p_stream->p_wf->wBitsPerSample );
1000 /* Check for text (subtitles) header */
1001 else if( !strncmp(st->streamtype, "text", 4) )
1003 /* We need to get rid of the header packet */
1004 ogg_stream_packetout( &p_stream->os, &oggpacket );
1006 msg_Dbg( p_input, "found text subtitles header" );
1007 p_stream->i_cat = SPU_ES;
1008 p_stream->i_fourcc =
1009 VLC_FOURCC( 's', 'u', 'b', 't' );
1010 p_stream->f_rate = 1000; /* granulepos is in milisec */
1014 msg_Dbg( p_input, "stream %d has a header marker "
1015 "but is of an unknown type", p_ogg->i_streams-1 );
1022 msg_Dbg( p_input, "stream %d is of unknown type",
1023 p_ogg->i_streams-1 );
1030 if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
1031 return VLC_EGENERIC;
1034 /* This is the first data page, which means we are now finished
1035 * with the initial pages. We just need to store it in the relevant
1037 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1039 if( ogg_stream_pagein( &p_ogg->pp_stream[i_stream]->os,
1048 return VLC_EGENERIC;
1051 /*****************************************************************************
1052 * Activate: initializes ogg demux structures
1053 *****************************************************************************/
1054 static int Activate( vlc_object_t * p_this )
1056 int i_stream, b_forced;
1058 input_thread_t *p_input = (input_thread_t *)p_this;
1060 p_input->p_demux_data = NULL;
1061 b_forced = ( ( *p_input->psz_demux )&&
1062 ( !strncmp( p_input->psz_demux, "ogg", 10 ) ) ) ? 1 : 0;
1064 /* Check if we are dealing with an ogg stream */
1065 if( !b_forced && ( Ogg_Check( p_input ) != VLC_SUCCESS ) )
1068 /* Allocate p_ogg */
1069 if( !( p_ogg = malloc( sizeof( demux_sys_t ) ) ) )
1071 msg_Err( p_input, "out of memory" );
1074 memset( p_ogg, 0, sizeof( demux_sys_t ) );
1075 p_input->p_demux_data = p_ogg;
1078 p_ogg->b_seekable = ( ( p_input->stream.b_seekable )
1079 &&( p_input->stream.i_method == INPUT_METHOD_FILE ) );
1081 /* Initialize the Ogg physical bitstream parser */
1082 ogg_sync_init( &p_ogg->oy );
1084 /* Find the logical streams embedded in the physical stream and
1085 * initialize our p_ogg structure. */
1086 if( Ogg_FindLogicalStreams( p_input, p_ogg ) != VLC_SUCCESS )
1088 msg_Err( p_input, "couldn't find an ogg logical stream" );
1092 /* Set the demux function */
1093 p_input->pf_demux = Demux;
1095 /* Initialize access plug-in structures. */
1096 if( p_input->i_mtu == 0 )
1098 /* Improve speed. */
1099 p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
1102 /* Create one program */
1103 vlc_mutex_lock( &p_input->stream.stream_lock );
1104 if( input_InitStream( p_input, 0 ) == -1)
1106 vlc_mutex_unlock( &p_input->stream.stream_lock );
1107 msg_Err( p_input, "cannot init stream" );
1110 if( input_AddProgram( p_input, 0, 0) == NULL )
1112 vlc_mutex_unlock( &p_input->stream.stream_lock );
1113 msg_Err( p_input, "cannot add program" );
1116 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
1117 p_input->stream.i_mux_rate = 0;
1118 vlc_mutex_unlock( &p_input->stream.stream_lock );
1120 for( i_stream = 0 ; i_stream < p_ogg->i_streams; i_stream++ )
1122 #define p_stream p_ogg->pp_stream[i_stream]
1123 vlc_mutex_lock( &p_input->stream.stream_lock );
1124 p_stream->p_es = input_AddES( p_input,
1125 p_input->stream.p_selected_program,
1127 p_stream->i_cat, NULL, 0 );
1128 p_input->stream.i_mux_rate += (p_stream->i_bitrate / ( 8 * 50 ));
1129 vlc_mutex_unlock( &p_input->stream.stream_lock );
1130 p_stream->p_es->i_stream_id = i_stream;
1131 p_stream->p_es->i_fourcc = p_stream->i_fourcc;
1132 p_stream->p_es->p_waveformatex = (void*)p_stream->p_wf;
1133 p_stream->p_es->p_bitmapinfoheader = (void*)p_stream->p_bih;
1137 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1139 #define p_stream p_ogg->pp_stream[i_stream]
1140 switch( p_stream->p_es->i_cat )
1143 if( (p_ogg->p_stream_video == NULL) )
1145 p_ogg->p_stream_video = p_stream;
1146 /* TODO add test to see if a decoder has been found */
1147 Ogg_StreamStart( p_input, p_ogg, i_stream );
1152 if( (p_ogg->p_stream_audio == NULL) )
1154 int i_audio = config_GetInt( p_input, "audio-channel" );
1155 if( i_audio == i_stream || i_audio <= 0 ||
1156 i_audio >= p_ogg->i_streams ||
1157 p_ogg->pp_stream[i_audio]->p_es->i_cat != AUDIO_ES )
1159 p_ogg->p_stream_audio = p_stream;
1160 Ogg_StreamStart( p_input, p_ogg, i_stream );
1166 if( (p_ogg->p_stream_spu == NULL) )
1168 /* for spu, default is none */
1169 int i_spu = config_GetInt( p_input, "spu-channel" );
1170 if( i_spu < 0 || i_spu >= p_ogg->i_streams ||
1171 p_ogg->pp_stream[i_spu]->p_es->i_cat != SPU_ES )
1175 else if( i_spu == i_stream )
1177 p_ogg->p_stream_spu = p_stream;
1178 Ogg_StreamStart( p_input, p_ogg, i_stream );
1189 /* we select the first audio and video ES */
1190 vlc_mutex_lock( &p_input->stream.stream_lock );
1191 if( !p_ogg->p_stream_video )
1193 msg_Warn( p_input, "no video stream found" );
1195 if( !p_ogg->p_stream_audio )
1197 msg_Warn( p_input, "no audio stream found!" );
1199 p_input->stream.p_selected_program->b_is_ok = 1;
1200 vlc_mutex_unlock( &p_input->stream.stream_lock );
1202 /* Call the pace control */
1203 input_ClockManageRef( p_input,
1204 p_input->stream.p_selected_program,
1210 Deactivate( (vlc_object_t *)p_input );
1215 /*****************************************************************************
1216 * Deactivate: frees unused data
1217 *****************************************************************************/
1218 static void Deactivate( vlc_object_t *p_this )
1220 input_thread_t *p_input = (input_thread_t *)p_this;
1221 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
1226 /* Cleanup the bitstream parser */
1227 ogg_sync_clear( &p_ogg->oy );
1229 for( i = 0; i < p_ogg->i_streams; i++ )
1231 ogg_stream_clear( &p_ogg->pp_stream[i]->os );
1232 for( j = 0; j < p_ogg->pp_stream[i]->i_packets_backup; j++ )
1234 free( p_ogg->pp_stream[i]->p_packets_backup[j].packet );
1236 if( p_ogg->pp_stream[i]->p_packets_backup)
1237 free( p_ogg->pp_stream[i]->p_packets_backup );
1238 #if 0 /* hmmm, it's already freed in input_DelES() */
1239 if( p_ogg->pp_stream[i]->p_bih )
1240 free( p_ogg->pp_stream[i]->p_bih );
1241 if( p_ogg->pp_stream[i]->p_wf )
1242 free( p_ogg->pp_stream[i]->p_wf );
1244 free( p_ogg->pp_stream[i] );
1246 if( p_ogg->pp_stream ) free( p_ogg->pp_stream );
1252 /*****************************************************************************
1253 * Demux: reads and demuxes data packets
1254 *****************************************************************************
1255 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1256 *****************************************************************************/
1257 static int Demux( input_thread_t * p_input )
1259 int i, i_stream, b_eos = 0;
1261 ogg_packet oggpacket;
1262 demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data;
1264 #define p_stream p_ogg->pp_stream[i_stream]
1265 /* detect new selected/unselected streams */
1266 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1268 if( p_stream->p_es )
1270 if( p_stream->p_es->p_decoder_fifo &&
1271 !p_stream->i_activated )
1273 Ogg_StreamStart( p_input, p_ogg, i_stream );
1276 if( !p_stream->p_es->p_decoder_fifo &&
1277 p_stream->i_activated )
1279 Ogg_StreamStop( p_input, p_ogg, i_stream );
1284 /* search for new video and audio stream to select
1285 * if current have been unselected */
1286 if( ( !p_ogg->p_stream_video )
1287 || ( !p_ogg->p_stream_video->p_es->p_decoder_fifo ) )
1289 p_ogg->p_stream_video = NULL;
1290 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1292 if( ( p_stream->i_cat == VIDEO_ES )
1293 &&( p_stream->p_es->p_decoder_fifo ) )
1295 p_ogg->p_stream_video = p_stream;
1300 if( ( !p_ogg->p_stream_audio )
1301 ||( !p_ogg->p_stream_audio->p_es->p_decoder_fifo ) )
1303 p_ogg->p_stream_audio = NULL;
1304 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1306 if( ( p_stream->i_cat == AUDIO_ES )
1307 &&( p_stream->p_es->p_decoder_fifo ) )
1309 p_ogg->p_stream_audio = p_stream;
1315 if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
1317 msg_Warn( p_input, "synchro reinit" );
1319 /* An ogg packet does only contain the starting date of the next
1320 * packet, not its own starting date.
1321 * As a quick work around, we just skip an oggpage */
1323 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1325 /* we'll trash all the data until we find the next pcr */
1326 p_stream->b_reinit = 1;
1327 p_stream->i_pcr = -1;
1328 p_stream->i_interpolated_pcr = -1;
1330 p_ogg->b_reinit = 1;
1335 * Demux ogg pages from the stream
1337 for( i = 0; i < PAGES_READ_ONCE || p_ogg->b_reinit; i++ )
1339 if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
1345 for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
1347 if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
1350 while( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
1352 if( !p_stream->p_es )
1357 if( p_stream->b_reinit )
1359 if( oggpacket.granulepos >= 0 )
1361 p_stream->b_reinit = 0;
1363 /* Convert the next granulepos into a pcr */
1364 Ogg_UpdatePCR( p_stream, &oggpacket );
1366 /* Call the pace control to reinitialize
1367 * the system clock */
1368 input_ClockManageRef( p_input,
1369 p_input->stream.p_selected_program,
1372 if( (!p_ogg->p_stream_video ||
1373 !p_ogg->p_stream_video->b_reinit) &&
1374 (!p_ogg->p_stream_audio ||
1375 !p_ogg->p_stream_audio->b_reinit) )
1377 p_ogg->b_reinit = 0;
1383 Ogg_DecodePacket( p_input, p_stream, &oggpacket );
1390 p_ogg->i_old_pcr = p_ogg->i_pcr;
1391 p_ogg->i_pcr = p_stream->i_interpolated_pcr;
1392 for( ; i_stream < p_ogg->i_streams; i_stream++ )
1394 if( p_stream->i_cat == SPU_ES )
1397 if( p_stream->i_interpolated_pcr > 0
1398 && p_stream->i_interpolated_pcr < p_ogg->i_pcr )
1399 p_ogg->i_pcr = p_stream->i_interpolated_pcr;
1403 /* Sanity check for streams where the granulepos of the header packets
1404 * don't match these of the data packets (eg. ogg web radios). */
1405 if( p_ogg->i_old_pcr == 0 && p_ogg->i_pcr > 1000000 )
1406 p_input->stream.p_selected_program->i_synchro_state = SYNCHRO_REINIT;
1408 /* Call the pace control */
1409 input_ClockManageRef( p_input, p_input->stream.p_selected_program,
1412 /* Did we reach the end of stream ? */
1413 return( b_eos ? 0 : 1 );