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Commit 4f7285b1 authored by Gildas Bazin's avatar Gildas Bazin
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* modules/demux/ogg.c: Added Annodex support (www.annodex.net). Patch courtesy of Andre Pang.

parent d537e26b
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modules/demux/ogg.c
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......@@ -2,9 +2,10 @@
* 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
......@@ -65,6 +66,9 @@ typedef struct logical_stream_s
int b_reinit;
int i_theora_keyframe_granule_shift;
/* for Annodex logical bitstreams */
int secondary_header_packets;
} logical_stream_t;
struct demux_sys_t
......@@ -146,6 +150,14 @@ static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg);
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
*****************************************************************************/
......@@ -265,6 +277,19 @@ static void Ogg_DecodePacket( input_thread_t *p_input,
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;
......@@ -477,7 +502,8 @@ static void Ogg_DecodePacket( input_thread_t *p_input,
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;
......@@ -583,25 +609,8 @@ static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
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 &&
......@@ -652,62 +661,11 @@ static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
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' );
/* 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 */
Ogg_ReadTheoraHeader( p_stream, &oggpacket );
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 &&
......@@ -729,6 +687,23 @@ static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
"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 ))
......@@ -1093,6 +1068,14 @@ static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg)
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 );
......@@ -1229,6 +1212,31 @@ static int Demux( input_thread_t * p_input )
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
......@@ -1314,3 +1322,172 @@ static int Control( input_thread_t *p_input, int i_query, va_list args )
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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