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Commit 07c2bef6 authored by Laurent Aimar's avatar Laurent Aimar
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* ogg: cosmetics + converted PCR to micro-second unit. (I may 

introduced bugs).
parent d8f54d49
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Showing with 281 additions and 337 deletions
modules/demux/ogg.c
View file @ 07c2bef6
......@@ -33,7 +33,19 @@
#include "codecs.h"
#include "vlc_bits.h"
#define OGG_BLOCK_SIZE 4096
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin();
set_description( _("Ogg stream demuxer" ) );
set_capability( "demux", 50 );
set_callbacks( Open, Close );
add_shortcut( "ogg" );
vlc_module_end();
/*****************************************************************************
* Definitions of structures and functions used by this plugins
......@@ -81,7 +93,6 @@ struct demux_sys_t
/* program clock reference (in units of 90kHz) derived from the pcr of
* the sub-streams */
mtime_t i_pcr;
int i_old_synchro_state;
/* stream state */
int i_eos;
......@@ -124,6 +135,8 @@ typedef struct stream_header
} sh;
} stream_header;
#define OGG_BLOCK_SIZE 4096
/* Some defines from OggDS */
#define PACKET_TYPE_HEADER 0x01
#define PACKET_TYPE_BITS 0x07
......@@ -134,21 +147,17 @@ typedef struct stream_header
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Activate ( vlc_object_t * );
static void Deactivate( vlc_object_t * );
static int Demux ( input_thread_t * );
static int Control ( input_thread_t *, int, va_list );
static int Control( input_thread_t *, int, va_list );
/* Bitstream manipulation */
static int Ogg_Check ( input_thread_t *p_input );
static int Ogg_ReadPage ( input_thread_t *, demux_sys_t *, ogg_page * );
static int Ogg_ReadPage ( input_thread_t *, ogg_page * );
static void Ogg_UpdatePCR ( logical_stream_t *, ogg_packet * );
static void Ogg_DecodePacket ( input_thread_t *p_input,
logical_stream_t *p_stream, ogg_packet * );
static void Ogg_DecodePacket ( input_thread_t *, logical_stream_t *, ogg_packet * );
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 );
static int Ogg_BeginningOfStream( input_thread_t *p_input );
static int Ogg_FindLogicalStreams( input_thread_t *p_input );
static void Ogg_EndOfStream( input_thread_t *p_input );
/* Logical bitstream headers */
static void Ogg_ReadTheoraHeader( logical_stream_t *p_stream,
......@@ -159,43 +168,251 @@ static void Ogg_ReadAnnodexHeader( vlc_object_t *, logical_stream_t *p_stream,
ogg_packet *p_oggpacket );
/*****************************************************************************
* Module descriptor
* Open: initializes ogg demux structures
*****************************************************************************/
vlc_module_begin();
set_description( _("Ogg stream demuxer" ) );
set_capability( "demux", 50 );
set_callbacks( Activate, Deactivate );
add_shortcut( "ogg" );
vlc_module_end();
/****************************************************************************
* Ogg_Check: Check we are dealing with an ogg stream.
****************************************************************************/
static int Ogg_Check( input_thread_t *p_input )
static int Open( vlc_object_t * p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
demux_sys_t *p_sys;
uint8_t *p_peek;
int i_size = input_Peek( p_input, &p_peek, 4 );
/* Check for the Ogg capture pattern */
if( !(i_size>3) || !(p_peek[0] == 'O') || !(p_peek[1] == 'g') ||
!(p_peek[2] == 'g') || !(p_peek[3] == 'S') )
/* Check if we are dealing with an ogg stream */
if( stream_Peek( p_input->s, &p_peek, 4 ) < 4 )
{
msg_Err( p_input, "cannot peek" );
return VLC_EGENERIC;
}
if( strcmp( p_input->psz_demux, "ogg" ) && strncmp( p_peek, "OggS", 4 ) )
{
msg_Warn( p_input, "ogg module discarded (invalid header)" );
return VLC_EGENERIC;
}
/* Create one program */
vlc_mutex_lock( &p_input->stream.stream_lock );
if( input_InitStream( p_input, 0 ) == -1)
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
msg_Err( p_input, "cannot init stream" );
return VLC_EGENERIC;
}
vlc_mutex_unlock( &p_input->stream.stream_lock );
/* FIXME: Capture pattern might not be enough so we can also check for the
* the first complete page */
/* Set exported functions */
p_input->pf_demux = Demux;
p_input->pf_demux_control = Control;
p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
memset( p_sys, 0, sizeof( demux_sys_t ) );
p_sys->pp_stream = NULL;
/* Begnning of stream, tell the demux to look for elementary streams. */
p_sys->i_eos = 0;
/* Initialize the Ogg physical bitstream parser */
ogg_sync_init( &p_sys->oy );
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: frees unused data
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
demux_sys_t *p_sys = p_input->p_demux_data ;
/* Cleanup the bitstream parser */
ogg_sync_clear( &p_sys->oy );
Ogg_EndOfStream( p_input );
free( p_sys );
}
/*****************************************************************************
* Demux: reads and demuxes data packets
*****************************************************************************
* Returns -1 in case of error, 0 in case of EOF, 1 otherwise
*****************************************************************************/
static int Demux( input_thread_t * p_input )
{
demux_sys_t *p_sys = p_input->p_demux_data;
ogg_page oggpage;
ogg_packet oggpacket;
int i_stream;
if( p_sys->i_eos == p_sys->i_streams )
{
if( p_sys->i_eos )
{
msg_Dbg( p_input, "end of a group of logical streams" );
Ogg_EndOfStream( p_input );
}
if( Ogg_BeginningOfStream( p_input ) != VLC_SUCCESS ) return 0;
p_sys->i_eos = 0;
msg_Dbg( p_input, "beginning of a group of logical streams" );
es_out_Control( p_input->p_es_out, ES_OUT_RESET_PCR );
}
/*
* Demux an ogg page from the stream
*/
if( Ogg_ReadPage( p_input, &oggpage ) != VLC_SUCCESS )
{
return 0; /* EOF */
}
/* Test for End of Stream */
if( ogg_page_eos( &oggpage ) ) p_sys->i_eos++;
for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
{
logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
continue;
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
* until we find a new dated one. */
Ogg_UpdatePCR( p_stream, &oggpacket );
if( p_stream->i_pcr >= 0 )
{
p_stream->b_reinit = 0;
}
else
{
p_stream->i_interpolated_pcr = -1;
continue;
}
/* An Ogg/vorbis packet contains an end date granulepos */
if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) ||
p_stream->fmt.i_codec == VLC_FOURCC( 's','p','x',' ' ) ||
p_stream->fmt.i_codec == VLC_FOURCC( 'f','l','a','c' ) )
{
if( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
{
Ogg_DecodePacket( p_input, p_stream, &oggpacket );
}
else
{
es_out_Control( p_input->p_es_out, ES_OUT_SET_PCR, p_stream->i_pcr );
}
continue;
}
}
Ogg_DecodePacket( p_input, p_stream, &oggpacket );
}
break;
}
i_stream = 0; p_sys->i_pcr = -1;
for( ; i_stream < p_sys->i_streams; i_stream++ )
{
logical_stream_t *p_stream = p_sys->pp_stream[i_stream];
if( p_stream->fmt.i_cat == SPU_ES )
continue;
if( p_stream->i_interpolated_pcr < 0 )
continue;
if( p_sys->i_pcr < 0 || p_stream->i_interpolated_pcr < p_sys->i_pcr )
p_sys->i_pcr = p_stream->i_interpolated_pcr;
}
if( p_sys->i_pcr >= 0 )
{
es_out_Control( p_input->p_es_out, ES_OUT_SET_PCR, p_sys->i_pcr );
}
return 1;
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( input_thread_t *p_input, int i_query, va_list args )
{
demux_sys_t *p_sys = p_input->p_demux_data;
int64_t *pi64;
int i;
switch( i_query )
{
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = p_sys->i_pcr;
return VLC_SUCCESS;
case DEMUX_SET_TIME:
return VLC_EGENERIC;
case DEMUX_SET_POSITION:
for( i = 0; i < p_sys->i_streams; i++ )
{
logical_stream_t *p_stream = p_sys->pp_stream[i];
/* we'll trash all the data until we find the next pcr */
p_stream->b_reinit = 1;
p_stream->i_pcr = -1;
p_stream->i_interpolated_pcr = -1;
ogg_stream_reset( &p_stream->os );
}
ogg_sync_reset( &p_sys->oy );
default:
return demux_vaControlDefault( p_input, i_query, args );
}
}
/****************************************************************************
* Ogg_ReadPage: Read a full Ogg page from the physical bitstream.
****************************************************************************
* Returns VLC_SUCCESS if a page has been read. An error might happen if we
* are at the end of stream.
****************************************************************************/
static int Ogg_ReadPage( input_thread_t *p_input, demux_sys_t *p_ogg,
ogg_page *p_oggpage )
static int Ogg_ReadPage( input_thread_t *p_input, ogg_page *p_oggpage )
{
demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
int i_read = 0;
data_packet_t *p_data;
byte_t *p_buffer;
......@@ -227,7 +444,7 @@ static void Ogg_UpdatePCR( logical_stream_t *p_stream,
{
if( p_stream->fmt.i_codec != VLC_FOURCC( 't','h','e','o' ) )
{
p_stream->i_pcr = p_oggpacket->granulepos * 90000
p_stream->i_pcr = p_oggpacket->granulepos * I64C(1000000)
/ p_stream->f_rate;
}
else
......@@ -237,7 +454,7 @@ static void Ogg_UpdatePCR( logical_stream_t *p_stream,
ogg_int64_t pframe = p_oggpacket->granulepos -
( iframe << p_stream->i_theora_keyframe_granule_shift );
p_stream->i_pcr = ( iframe + pframe ) * 90000
p_stream->i_pcr = ( iframe + pframe ) * I64C(1000000)
/ p_stream->f_rate;
}
......@@ -251,9 +468,9 @@ static void Ogg_UpdatePCR( logical_stream_t *p_stream,
* If we can't then don't touch the old value. */
if( p_stream->fmt.i_cat == VIDEO_ES )
/* 1 frame per packet */
p_stream->i_interpolated_pcr += (90000 / p_stream->f_rate);
p_stream->i_interpolated_pcr += (I64C(1000000) / p_stream->f_rate);
else if( p_stream->fmt.i_bitrate )
p_stream->i_interpolated_pcr += ( p_oggpacket->bytes * 90000
p_stream->i_interpolated_pcr += ( p_oggpacket->bytes * I64C(1000000)
/ p_stream->fmt.i_bitrate / 8 );
}
}
......@@ -404,7 +621,7 @@ static void Ogg_DecodePacket( input_thread_t *p_input,
{
/* Set correct starting date in header packets */
p_stream->p_packets_backup[i].granulepos =
p_stream->i_interpolated_pcr * p_stream->f_rate / 90000;
p_stream->i_interpolated_pcr * p_stream->f_rate / I64C(1000000);
Ogg_DecodePacket( p_input, p_stream,
&p_stream->p_packets_backup[i] );
......@@ -422,23 +639,18 @@ static void Ogg_DecodePacket( input_thread_t *p_input,
/* This is for streams where the granulepos of the header packets
* doesn't match these of the data packets (eg. ogg web radios). */
if( p_stream->i_previous_pcr == 0 &&
p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY * 9/100 )
p_input->stream.p_selected_program->i_synchro_state =
SYNCHRO_REINIT;
p_stream->i_previous_pcr = p_stream->i_pcr;
p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY )
{
es_out_Control( p_input->p_es_out, ES_OUT_RESET_PCR );
/* Call the pace control */
if( p_input->stream.p_selected_program->i_synchro_state ==
SYNCHRO_REINIT )
input_ClockManageRef( p_input,
p_input->stream.p_selected_program,
p_stream->i_pcr );
es_out_Control( p_input->p_es_out, ES_OUT_SET_PCR, p_stream->i_pcr );
}
p_stream->i_previous_pcr = p_stream->i_pcr;
/* The granulepos is the end date of the sample */
i_pts = input_ClockGetTS( p_input,
p_input->stream.p_selected_program,
p_stream->i_pcr );
i_pts = p_stream->i_pcr;
}
}
......@@ -450,15 +662,13 @@ static void Ogg_DecodePacket( input_thread_t *p_input,
/* This is for streams where the granulepos of the header packets
* doesn't match these of the data packets (eg. ogg web radios). */
if( p_stream->i_previous_pcr == 0 &&
p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY * 9/100 )
p_input->stream.p_selected_program->i_synchro_state =
SYNCHRO_REINIT;
p_stream->i_pcr > 3 * DEFAULT_PTS_DELAY )
{
es_out_Control( p_input->p_es_out, ES_OUT_RESET_PCR );
/* Call the pace control */
if( p_input->stream.p_selected_program->i_synchro_state ==
SYNCHRO_REINIT )
input_ClockManageRef( p_input, p_input->stream.p_selected_program,
p_stream->i_pcr );
es_out_Control( p_input->p_es_out, ES_OUT_SET_PCR, p_stream->i_pcr );
}
}
if( p_stream->fmt.i_codec != VLC_FOURCC( 'v','o','r','b' ) &&
......@@ -469,8 +679,7 @@ static void Ogg_DecodePacket( input_thread_t *p_input,
p_stream->i_previous_pcr = p_stream->i_pcr;
/* The granulepos is the start date of the sample */
i_pts = input_ClockGetTS( p_input, p_input->stream.p_selected_program,
p_stream->i_pcr );
i_pts = p_stream->i_pcr;
}
if( !b_selected )
......@@ -560,15 +769,16 @@ static void Ogg_DecodePacket( input_thread_t *p_input,
*
* On success this function returns VLC_SUCCESS.
****************************************************************************/
static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
static int Ogg_FindLogicalStreams( input_thread_t *p_input )
{
demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
ogg_packet oggpacket;
ogg_page oggpage;
int i_stream;
#define p_stream p_ogg->pp_stream[p_ogg->i_streams - 1]
while( Ogg_ReadPage( p_input, p_ogg, &oggpage ) == VLC_SUCCESS )
while( Ogg_ReadPage( p_input, &oggpage ) == VLC_SUCCESS )
{
if( ogg_page_bos( &oggpage ) )
{
......@@ -947,7 +1157,7 @@ static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
p_ogg->i_streams--;
}
if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
if( Ogg_ReadPage( p_input, &oggpage ) != VLC_SUCCESS )
return VLC_EGENERIC;
}
......@@ -971,88 +1181,18 @@ static int Ogg_FindLogicalStreams( input_thread_t *p_input, demux_sys_t *p_ogg)
return VLC_EGENERIC;
}
/*****************************************************************************
* Activate: initializes ogg demux structures
*****************************************************************************/
static int Activate( vlc_object_t * p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
demux_sys_t *p_ogg;
int b_forced;
p_input->p_demux_data = NULL;
b_forced = ( ( *p_input->psz_demux )&&
( !strncmp( p_input->psz_demux, "ogg", 10 ) ) ) ? 1 : 0;
/* Check if we are dealing with an ogg stream */
if( !b_forced && ( Ogg_Check( p_input ) != VLC_SUCCESS ) )
return -1;
/* Allocate p_ogg */
if( !( p_ogg = malloc( sizeof( demux_sys_t ) ) ) )
{
msg_Err( p_input, "out of memory" );
goto error;
}
memset( p_ogg, 0, sizeof( demux_sys_t ) );
p_input->p_demux_data = p_ogg;
p_ogg->pp_stream = NULL;
/* Initialize the Ogg physical bitstream parser */
ogg_sync_init( &p_ogg->oy );
/* Set exported functions */
p_input->pf_demux = Demux;
p_input->pf_demux_control = Control;
/* Initialize access plug-in structures. */
if( p_input->i_mtu == 0 )
{
/* Improve speed. */
p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
}
/* Create one program */
vlc_mutex_lock( &p_input->stream.stream_lock );
if( input_InitStream( p_input, 0 ) == -1)
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
msg_Err( p_input, "cannot init stream" );
goto error;
}
if( input_AddProgram( p_input, 0, 0) == NULL )
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
msg_Err( p_input, "cannot add program" );
goto error;
}
p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
vlc_mutex_unlock( &p_input->stream.stream_lock );
/* Begnning of stream, tell the demux to look for elementary streams. */
p_ogg->i_eos = 0;
p_ogg->i_old_synchro_state = !SYNCHRO_REINIT;
return 0;
error:
Deactivate( (vlc_object_t *)p_input );
return -1;
}
/****************************************************************************
* Ogg_BeginningOfStream: Look for Beginning of Stream ogg pages and add
* Elementary streams.
****************************************************************************/
static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg)
static int Ogg_BeginningOfStream( input_thread_t *p_input )
{
demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
int i_stream;
/* Find the logical streams embedded in the physical stream and
* initialize our p_ogg structure. */
if( Ogg_FindLogicalStreams( p_input, p_ogg ) != VLC_SUCCESS )
if( Ogg_FindLogicalStreams( p_input ) != VLC_SUCCESS )
{
msg_Warn( p_input, "couldn't find any ogg logical stream" );
return VLC_EGENERIC;
......@@ -1092,8 +1232,9 @@ static int Ogg_BeginningOfStream( input_thread_t *p_input, demux_sys_t *p_ogg)
/****************************************************************************
* Ogg_EndOfStream: clean up the ES when an End of Stream is detected.
****************************************************************************/
static void Ogg_EndOfStream( input_thread_t *p_input, demux_sys_t *p_ogg )
static void Ogg_EndOfStream( input_thread_t *p_input )
{
demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
int i_stream, j;
#define p_stream p_ogg->pp_stream[i_stream]
......@@ -1126,203 +1267,6 @@ static void Ogg_EndOfStream( input_thread_t *p_input, demux_sys_t *p_ogg )
p_ogg->i_streams = 0;
}
/*****************************************************************************
* Deactivate: frees unused data
*****************************************************************************/
static void Deactivate( vlc_object_t *p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data ;
if( p_ogg )
{
/* Cleanup the bitstream parser */
ogg_sync_clear( &p_ogg->oy );
Ogg_EndOfStream( p_input, p_ogg );
free( p_ogg );
}
}
/*****************************************************************************
* Demux: reads and demuxes data packets
*****************************************************************************
* Returns -1 in case of error, 0 in case of EOF, 1 otherwise
*****************************************************************************/
static int Demux( input_thread_t * p_input )
{
demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data;
ogg_page oggpage;
ogg_packet oggpacket;
int i_stream;
#define p_stream p_ogg->pp_stream[i_stream]
if( p_ogg->i_eos == p_ogg->i_streams )
{
if( p_ogg->i_eos )
{
msg_Dbg( p_input, "end of a group of logical streams" );
Ogg_EndOfStream( p_input, p_ogg );
}
if( Ogg_BeginningOfStream( p_input, p_ogg ) != VLC_SUCCESS ) return 0;
p_ogg->i_eos = 0;
msg_Dbg( p_input, "beginning of a group of logical streams" );
p_input->stream.p_selected_program->i_synchro_state = SYNCHRO_REINIT;
input_ClockManageRef( p_input, p_input->stream.p_selected_program, 0 );
}
if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
{
msg_Warn( p_input, "synchro reinit" );
if( p_ogg->i_old_synchro_state != SYNCHRO_REINIT )
for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
{
/* we'll trash all the data until we find the next pcr */
p_stream->b_reinit = 1;
p_stream->i_pcr = -1;
p_stream->i_interpolated_pcr = -1;
ogg_stream_reset( &p_stream->os );
}
if( p_ogg->i_old_synchro_state != SYNCHRO_REINIT )
ogg_sync_reset( &p_ogg->oy );
}
/*
* Demux an ogg page from the stream
*/
if( Ogg_ReadPage( p_input, p_ogg, &oggpage ) != VLC_SUCCESS )
{
return 0; /* EOF */
}
/* Test for End of Stream */
if( ogg_page_eos( &oggpage ) ) p_ogg->i_eos++;
for( i_stream = 0; i_stream < p_ogg->i_streams; i_stream++ )
{
if( ogg_stream_pagein( &p_stream->os, &oggpage ) != 0 )
continue;
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
* until we find a new dated one. */
Ogg_UpdatePCR( p_stream, &oggpacket );
if( p_stream->i_pcr >= 0 )
{
p_stream->b_reinit = 0;
}
else
{
p_stream->i_interpolated_pcr = -1;
continue;
}
/* An Ogg/vorbis packet contains an end date granulepos */
if( p_stream->fmt.i_codec == VLC_FOURCC( 'v','o','r','b' ) ||
p_stream->fmt.i_codec == VLC_FOURCC( 's','p','x',' ' ) ||
p_stream->fmt.i_codec == VLC_FOURCC( 'f','l','a','c' ) )
{
if( ogg_stream_packetout( &p_stream->os, &oggpacket ) > 0 )
{
Ogg_DecodePacket( p_input, p_stream, &oggpacket );
}
else
{
input_ClockManageRef( p_input,
p_input->stream.p_selected_program,
p_stream->i_pcr );
}
continue;
}
}
Ogg_DecodePacket( p_input, p_stream, &oggpacket );
}
break;
}
i_stream = 0; p_ogg->i_pcr = -1;
for( ; i_stream < p_ogg->i_streams; i_stream++ )
{
if( p_stream->fmt.i_cat == SPU_ES )
continue;
if( p_stream->i_interpolated_pcr < 0 )
continue;
if( p_ogg->i_pcr < 0 || p_stream->i_interpolated_pcr < p_ogg->i_pcr )
p_ogg->i_pcr = p_stream->i_interpolated_pcr;
}
if( p_ogg->i_pcr >= 0 )
{
input_ClockManageRef( p_input, p_input->stream.p_selected_program,
p_ogg->i_pcr );
}
#undef p_stream
p_ogg->i_old_synchro_state =
p_input->stream.p_selected_program->i_synchro_state;
return 1;
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( input_thread_t *p_input, int i_query, va_list args )
{
demux_sys_t *p_ogg = (demux_sys_t *)p_input->p_demux_data;
int64_t *pi64;
switch( i_query )
{
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = p_ogg->i_pcr * 100 / 9;
return VLC_SUCCESS;
default:
return demux_vaControlDefault( p_input, i_query, args );
}
}
static void Ogg_ReadTheoraHeader( logical_stream_t *p_stream,
ogg_packet *p_oggpacket )
{
......
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