* ogg.c : ogg stream demux module for vlc
*****************************************************************************
* Copyright (C) 2001-2003 VideoLAN
- * $Id: ogg.c,v 1.58 2004/02/15 13:16:43 gbazin Exp $
+ * $Id$
*
- * Author: Gildas Bazin <gbazin@netcourrier.com>
+ * Authors: Gildas Bazin <gbazin@netcourrier.com>
+ * Andre Pang <Andre.Pang@csiro.au> (Annodex support)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
int b_reinit;
int i_theora_keyframe_granule_shift;
+ /* for Annodex logical bitstreams */
+ int secondary_header_packets;
+
} logical_stream_t;
struct demux_sys_t
static int Ogg_FindLogicalStreams( input_thread_t *p_input,demux_sys_t *p_ogg);
static void Ogg_EndOfStream( input_thread_t *p_input, demux_sys_t *p_ogg );
+/* Logical bitstream headers */
+static void Ogg_ReadTheoraHeader( logical_stream_t *p_stream,
+ ogg_packet *p_oggpacket );
+static void Ogg_ReadVorbisHeader( logical_stream_t *p_stream,
+ ogg_packet *p_oggpacket );
+static void Ogg_ReadAnnodexHeader( vlc_object_t *, logical_stream_t *p_stream,
+ ogg_packet *p_oggpacket );
+
/*****************************************************************************
* Module descriptor
*****************************************************************************/
return;
}
+ if( p_oggpacket->bytes >= 7 &&
+ ! strncmp ( &p_oggpacket->packet[0], "Annodex", 7 ) )
+ {
+ /* it's an Annodex packet -- skip it (do nothing) */
+ return;
+ }
+ else if( p_oggpacket->bytes >= 7 &&
+ ! strncmp ( &p_oggpacket->packet[0], "AnxData", 7 ) )
+ {
+ /* it's an AnxData packet -- skip it (do nothing) */
+ return;
+ }
+
if( p_stream->b_force_backup )
{
ogg_packet *p_packet_backup;
p_stream->fmt.i_codec != VLC_FOURCC( 's','p','x',' ' ) &&
p_stream->fmt.i_codec != VLC_FOURCC( 'f','l','a','c' ) &&
p_stream->fmt.i_codec != VLC_FOURCC( 't','a','r','k' ) &&
- p_stream->fmt.i_codec != VLC_FOURCC( 't','h','e','o' ) )
+ p_stream->fmt.i_codec != VLC_FOURCC( 't','h','e','o' ) &&
+ p_stream->fmt.i_codec != VLC_FOURCC( 'c','m','m','l' ) )
{
/* We remove the header from the packet */
i_header_len = (*p_oggpacket->packet & PACKET_LEN_BITS01) >> 6;
if( oggpacket.bytes >= 7 &&
! strncmp( &oggpacket.packet[1], "vorbis", 6 ) )
{
- oggpack_buffer opb;
-
+ Ogg_ReadVorbisHeader( p_stream, &oggpacket );
msg_Dbg( p_input, "found vorbis header" );
- p_stream->fmt.i_cat = AUDIO_ES;
- p_stream->fmt.i_codec = VLC_FOURCC( 'v','o','r','b' );
-
- /* Signal that we want to keep a backup of the vorbis
- * stream headers. They will be used when switching between
- * audio streams. */
- p_stream->b_force_backup = 1;
-
- /* Cheat and get additionnal info ;) */
- oggpack_readinit( &opb, oggpacket.packet, oggpacket.bytes);
- oggpack_adv( &opb, 88 );
- p_stream->fmt.audio.i_channels = oggpack_read( &opb, 8 );
- p_stream->f_rate = p_stream->fmt.audio.i_rate =
- oggpack_read( &opb, 32 );
- oggpack_adv( &opb, 32 );
- p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
}
/* Check for Speex header */
else if( oggpacket.bytes >= 7 &&
else if( oggpacket.bytes >= 7 &&
! strncmp( &oggpacket.packet[1], "theora", 6 ) )
{
- bs_t bitstream;
- int i_fps_numerator;
- int i_fps_denominator;
- int i_keyframe_frequency_force;
-
- msg_Dbg( p_input, "found theora header" );
- p_stream->fmt.i_cat = VIDEO_ES;
- p_stream->fmt.i_codec = VLC_FOURCC( 't','h','e','o' );
+ Ogg_ReadTheoraHeader( p_stream, &oggpacket );
- /* Signal that we want to keep a backup of the vorbis
- * stream headers. They will be used when switching between
- * audio streams. */
- p_stream->b_force_backup = 1;
-
- /* Cheat and get additionnal info ;) */
- bs_init( &bitstream, oggpacket.packet, oggpacket.bytes );
- bs_skip( &bitstream, 56 );
- bs_read( &bitstream, 8 ); /* major version num */
- bs_read( &bitstream, 8 ); /* minor version num */
- bs_read( &bitstream, 8 ); /* subminor version num */
- bs_read( &bitstream, 16 ) /*<< 4*/; /* width */
- bs_read( &bitstream, 16 ) /*<< 4*/; /* height */
- bs_read( &bitstream, 24 ); /* frame width */
- bs_read( &bitstream, 24 ); /* frame height */
- bs_read( &bitstream, 8 ); /* x offset */
- bs_read( &bitstream, 8 ); /* y offset */
-
- i_fps_numerator = bs_read( &bitstream, 32 );
- i_fps_denominator = bs_read( &bitstream, 32 );
- bs_read( &bitstream, 24 ); /* aspect_numerator */
- bs_read( &bitstream, 24 ); /* aspect_denominator */
- i_keyframe_frequency_force = 1 << bs_read( &bitstream, 5 );
- bs_read( &bitstream, 8 ); /* colorspace */
- p_stream->fmt.i_bitrate = bs_read( &bitstream, 24 );
- bs_read( &bitstream, 6 ); /* quality */
-
- /* granule_shift = i_log( frequency_force -1 ) */
- p_stream->i_theora_keyframe_granule_shift = 0;
- i_keyframe_frequency_force--;
- while( i_keyframe_frequency_force )
- {
- p_stream->i_theora_keyframe_granule_shift++;
- i_keyframe_frequency_force >>= 1;
- }
-
- p_stream->f_rate = ((float)i_fps_numerator) /
- i_fps_denominator;
msg_Dbg( p_input,
"found theora header, bitrate: %i, rate: %f",
p_stream->fmt.i_bitrate, p_stream->f_rate );
-
- /* Save this data in p_extra for ffmpeg */
- p_stream->fmt.i_extra = oggpacket.bytes;
- p_stream->fmt.p_extra = malloc( oggpacket.bytes );
- memcpy( p_stream->fmt.p_extra,
- oggpacket.packet, oggpacket.bytes );
}
/* Check for Tarkin header */
else if( oggpacket.bytes >= 7 &&
"found tarkin header, bitrate: %i, rate: %f",
p_stream->fmt.i_bitrate, p_stream->f_rate );
}
+ /* Check for Annodex header */
+ else if( oggpacket.bytes >= 7 &&
+ ! strncmp( &oggpacket.packet[0], "Annodex", 7 ) )
+ {
+ Ogg_ReadAnnodexHeader( VLC_OBJECT(p_input), p_stream,
+ &oggpacket );
+ /* kill annodex track */
+ free( p_stream );
+ p_ogg->i_streams--;
+ }
+ /* Check for Annodex header */
+ else if( oggpacket.bytes >= 7 &&
+ ! strncmp( &oggpacket.packet[0], "AnxData", 7 ) )
+ {
+ Ogg_ReadAnnodexHeader( VLC_OBJECT(p_input), p_stream,
+ &oggpacket );
+ }
else if( oggpacket.bytes >= 142 &&
!strncmp( &oggpacket.packet[1],
"Direct Show Samples embedded in Ogg", 35 ))
if( p_stream->fmt.i_codec != VLC_FOURCC('f','l','a','c') )
p_stream->p_es = es_out_Add( p_input->p_es_out, &p_stream->fmt );
+ if( p_stream->fmt.i_codec == VLC_FOURCC('c','m','m','l') )
+ {
+ /* Set the CMML stream active */
+ es_out_Control( p_input->p_es_out, ES_OUT_SET_ES,
+ p_stream->p_es );
+ }
+
+
vlc_mutex_lock( &p_input->stream.stream_lock );
p_input->stream.i_mux_rate += (p_stream->fmt.i_bitrate / ( 8 * 50 ));
vlc_mutex_unlock( &p_input->stream.stream_lock );
while( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
{
+ /* Read info from any secondary header packets, if there are any */
+ if( p_stream->secondary_header_packets > 0 )
+ {
+ if( p_stream->fmt.i_codec == VLC_FOURCC( 't','h','e','o' ) &&
+ oggpacket.bytes >= 7 &&
+ ! strncmp( &oggpacket.packet[1], "theora", 6 ) )
+ {
+ Ogg_ReadTheoraHeader( p_stream, &oggpacket );
+ p_stream->secondary_header_packets = 0;
+ }
+ else if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) &&
+ oggpacket.bytes >= 7 &&
+ ! strncmp( &oggpacket.packet[1], "vorbis", 6 ) )
+ {
+ Ogg_ReadVorbisHeader( p_stream, &oggpacket );
+ p_stream->secondary_header_packets = 0;
+ }
+ else if ( p_stream->fmt.i_codec == VLC_FOURCC( 'c','m','m','l' ) )
+ {
+ p_stream->secondary_header_packets = 0;
+ }
+
+ p_stream->secondary_header_packets--;
+ }
+
if( p_stream->b_reinit )
{
/* If synchro is re-initialized we need to drop all the packets
return demux_vaControlDefault( p_input, i_query, args );
}
}
+
+static void Ogg_ReadTheoraHeader( logical_stream_t *p_stream,
+ ogg_packet *p_oggpacket )
+{
+ bs_t bitstream;
+ int i_fps_numerator;
+ int i_fps_denominator;
+ int i_keyframe_frequency_force;
+
+ p_stream->fmt.i_cat = VIDEO_ES;
+ p_stream->fmt.i_codec = VLC_FOURCC( 't','h','e','o' );
+
+ /* Signal that we want to keep a backup of the vorbis
+ * stream headers. They will be used when switching between
+ * audio streams. */
+ p_stream->b_force_backup = 1;
+
+ /* Cheat and get additionnal info ;) */
+ bs_init( &bitstream, p_oggpacket->packet, p_oggpacket->bytes );
+ bs_skip( &bitstream, 56 );
+ bs_read( &bitstream, 8 ); /* major version num */
+ bs_read( &bitstream, 8 ); /* minor version num */
+ bs_read( &bitstream, 8 ); /* subminor version num */
+ bs_read( &bitstream, 16 ) /*<< 4*/; /* width */
+ bs_read( &bitstream, 16 ) /*<< 4*/; /* height */
+ bs_read( &bitstream, 24 ); /* frame width */
+ bs_read( &bitstream, 24 ); /* frame height */
+ bs_read( &bitstream, 8 ); /* x offset */
+ bs_read( &bitstream, 8 ); /* y offset */
+
+ i_fps_numerator = bs_read( &bitstream, 32 );
+ i_fps_denominator = bs_read( &bitstream, 32 );
+ bs_read( &bitstream, 24 ); /* aspect_numerator */
+ bs_read( &bitstream, 24 ); /* aspect_denominator */
+ i_keyframe_frequency_force = 1 << bs_read( &bitstream, 5 );
+ bs_read( &bitstream, 8 ); /* colorspace */
+ p_stream->fmt.i_bitrate = bs_read( &bitstream, 24 );
+ bs_read( &bitstream, 6 ); /* quality */
+
+ /* granule_shift = i_log( frequency_force -1 ) */
+ p_stream->i_theora_keyframe_granule_shift = 0;
+ i_keyframe_frequency_force--;
+ while( i_keyframe_frequency_force )
+ {
+ p_stream->i_theora_keyframe_granule_shift++;
+ i_keyframe_frequency_force >>= 1;
+ }
+
+ p_stream->f_rate = ((float)i_fps_numerator) / i_fps_denominator;
+
+ /* Save this data in p_extra for ffmpeg */
+ p_stream->fmt.i_extra = p_oggpacket->bytes;
+ p_stream->fmt.p_extra = malloc( p_oggpacket->bytes );
+ memcpy( p_stream->fmt.p_extra, p_oggpacket->packet, p_oggpacket->bytes );
+
+}
+
+static void Ogg_ReadVorbisHeader( logical_stream_t *p_stream,
+ ogg_packet *p_oggpacket )
+{
+ oggpack_buffer opb;
+
+ p_stream->fmt.i_cat = AUDIO_ES;
+ p_stream->fmt.i_codec = VLC_FOURCC( 'v','o','r','b' );
+
+ /* Signal that we want to keep a backup of the vorbis
+ * stream headers. They will be used when switching between
+ * audio streams. */
+ p_stream->b_force_backup = 1;
+
+ /* Cheat and get additionnal info ;) */
+ oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
+ oggpack_adv( &opb, 88 );
+ p_stream->fmt.audio.i_channels = oggpack_read( &opb, 8 );
+ p_stream->f_rate = p_stream->fmt.audio.i_rate =
+ oggpack_read( &opb, 32 );
+ oggpack_adv( &opb, 32 );
+ p_stream->fmt.i_bitrate = oggpack_read( &opb, 32 );
+}
+
+static void Ogg_ReadAnnodexHeader( vlc_object_t *p_this,
+ logical_stream_t *p_stream,
+ ogg_packet *p_oggpacket )
+{
+ if( ! strncmp( &p_oggpacket->packet[0], "Annodex", 7 ) )
+ {
+ Ogg_ReadTheoraHeader( p_stream, p_oggpacket );
+ oggpack_buffer opb;
+
+ uint16_t major_version;
+ uint16_t minor_version;
+ uint64_t timebase_numerator;
+ uint64_t timebase_denominator;
+
+ oggpack_readinit( &opb, p_oggpacket->packet, p_oggpacket->bytes);
+ oggpack_adv( &opb, 8*8 ); /* "Annodex\0" header */
+ major_version = oggpack_read( &opb, 2*8 ); /* major version */
+ minor_version = oggpack_read( &opb, 2*8 ); /* minor version */
+ timebase_numerator = GetQWLE( &p_oggpacket->packet[16] );
+ timebase_denominator = GetQWLE( &p_oggpacket->packet[24] );
+ }
+ else if( ! strncmp( &p_oggpacket->packet[0], "AnxData", 7 ) )
+ {
+ uint64_t granule_rate_numerator;
+ uint64_t granule_rate_denominator;
+ char content_type_string[1024];
+
+ /* Read in Annodex header fields */
+
+ granule_rate_numerator = GetQWLE( &p_oggpacket->packet[8] );
+ granule_rate_denominator = GetQWLE( &p_oggpacket->packet[16] );
+ p_stream->secondary_header_packets =
+ GetDWLE( &p_oggpacket->packet[24] );
+
+ msg_Dbg( p_this, "anxdata packet info: %qd/%qd, %d",
+ granule_rate_numerator, granule_rate_denominator,
+ p_stream->secondary_header_packets);
+
+ /* we are guaranteed that the first header field will be
+ * the content-type (by the Annodex standard) */
+ sscanf( &p_oggpacket->packet[28], "Content-Type: %1024s\r\n",
+ content_type_string );
+
+ p_stream->f_rate = (float) granule_rate_numerator /
+ (float) granule_rate_denominator;
+
+ /* What type of file do we have?
+ * strcmp is safe to use here because we've extracted
+ * content_type_string from the stream manually */
+ if( !strncmp(content_type_string, "audio/x-wav", 11) )
+ {
+ /* n.b. WAVs are unsupported right now */
+ p_stream->fmt.i_cat = UNKNOWN_ES;
+ }
+ else if( !strncmp(content_type_string, "audio/x-vorbis", 14) )
+ {
+ p_stream->fmt.i_cat = AUDIO_ES;
+ p_stream->fmt.i_codec = VLC_FOURCC( 'v','o','r','b' );
+
+ p_stream->b_force_backup = 1;
+ }
+ else if( !strncmp(content_type_string, "video/x-theora", 14) )
+ {
+ p_stream->fmt.i_cat = VIDEO_ES;
+ p_stream->fmt.i_codec = VLC_FOURCC( 't','h','e','o' );
+
+ p_stream->b_force_backup = 1;
+ }
+ else if( !strncmp(content_type_string, "video/x-xvid", 14) )
+ {
+ p_stream->fmt.i_cat = VIDEO_ES;
+ p_stream->fmt.i_codec = VLC_FOURCC( 'x','v','i','d' );
+
+ p_stream->b_force_backup = 1;
+ }
+ else if( !strncmp(content_type_string, "video/mpeg", 14) )
+ {
+ /* n.b. MPEG streams are unsupported right now */
+ p_stream->fmt.i_cat = VIDEO_ES;
+ p_stream->fmt.i_codec = VLC_FOURCC( 'm','p','g','v' );
+ }
+ else if( !strncmp(content_type_string, "text/x-cmml", 11) )
+ {
+ ogg_stream_packetout( &p_stream->os, p_oggpacket );
+ p_stream->fmt.i_cat = SPU_ES;
+ p_stream->fmt.i_codec = VLC_FOURCC( 'c','m','m','l' );
+ }
+ }
+}
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