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vlc-1.1
Commit 8b5d7fe8 authored by Laurent Aimar's avatar Laurent Aimar
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Removed now useless dts/a52/m4a demuxer.

parent 437bb4a8
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modules/demux/Modules.am
View file @ 8b5d7fe8
SUBDIRS = asf avformat avi mp4 mpeg playlist
SOURCES_a52sys = a52.c
SOURCES_dtssys = dts.c
SOURCES_flacsys = flac.c
SOURCES_ogg = ogg.c
SOURCES_demuxdump = demuxdump.c
......@@ -34,12 +32,10 @@ SOURCES_demux_cdg = cdg.c
SOURCES_smf = smf.c
libvlc_LTLIBRARIES += \
liba52sys_plugin.la \
libaiff_plugin.la \
libau_plugin.la \
libdemux_cdg_plugin.la \
libdemuxdump_plugin.la \
libdtssys_plugin.la \
libflacsys_plugin.la \
libmjpeg_plugin.la \
libnsc_plugin.la \
......
modules/demux/a52.c deleted 100644 → 0
View file @ 437bb4a8
/*****************************************************************************
* a52.c : raw A/52 stream input module for vlc
*****************************************************************************
* Copyright (C) 2001-2007 the VideoLAN team
* $Id$
*
* Authors: Gildas Bazin <gbazin@netcourrier.com>
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_demux.h>
#include <vlc_codec.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin();
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_DEMUX );
set_description( N_("Raw A/52 demuxer") );
set_capability( "demux", 145 );
set_callbacks( Open, Close );
add_shortcut( "a52" );
vlc_module_end();
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Demux ( demux_t * );
static int Control( demux_t *, int, va_list );
struct demux_sys_t
{
bool b_start;
es_out_id_t *p_es;
/* Packetizer */
decoder_t *p_packetizer;
mtime_t i_pts;
mtime_t i_time_offset;
int i_mux_rate;
bool b_big_endian;
};
static int CheckSync( const uint8_t *p_peek, bool *p_big_endian );
#define PCM_FRAME_SIZE (1536 * 4)
#define A52_PACKET_SIZE (1024)
#define A52_PEEK_SIZE (4 * PCM_FRAME_SIZE)
#define A52_PROBE_SIZE (512*1024)
#define A52_MAX_HEADER_SIZE 10
/*****************************************************************************
* Open: initializes ES structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
const uint8_t *p_peek;
int i_peek = 0;
bool b_big_endian = 0; /* Arbitrary initialisation */
/* Check if we are dealing with a WAV file */
if( stream_Peek( p_demux->s, &p_peek, 12+8 ) == 12+8 &&
!memcmp( p_peek, "RIFF", 4 ) && !memcmp( &p_peek[8], "WAVE", 4 ) )
{
/* Skip the wave header */
i_peek = 12 + 8;
while( memcmp( p_peek + i_peek - 8, "data", 4 ) )
{
uint32_t i_len = GetDWLE( p_peek + i_peek - 4 );
if( i_len > A52_PROBE_SIZE || i_peek + i_len > A52_PROBE_SIZE )
return VLC_EGENERIC;
i_peek += i_len + 8;
if( stream_Peek( p_demux->s, &p_peek, i_peek ) != i_peek )
return VLC_EGENERIC;
}
/* TODO: should check wave format and sample_rate */
/* Some A52 wav files don't begin with a sync code so we do a more
* extensive search */
int i_size = stream_Peek( p_demux->s, &p_peek, i_peek + A52_PEEK_SIZE * 2);
i_size -= (PCM_FRAME_SIZE + A52_MAX_HEADER_SIZE);
while( i_peek < i_size )
{
if( CheckSync( p_peek + i_peek, &b_big_endian ) != VLC_SUCCESS )
/* The data is stored in 16 bits words */
i_peek += 2;
else
{
/* Check following sync code */
if( CheckSync( p_peek + i_peek + PCM_FRAME_SIZE,
&b_big_endian ) != VLC_SUCCESS )
{
i_peek += 2;
continue;
}
break;
}
}
}
/* Have a peep at the show. */
CHECK_PEEK( p_peek, i_peek + A52_MAX_HEADER_SIZE * 2 );
if( CheckSync( p_peek + i_peek, &b_big_endian ) != VLC_SUCCESS )
{
if( !p_demux->b_force )
return VLC_EGENERIC;
/* User forced */
msg_Err( p_demux, "this doesn't look like a A52 audio stream, "
"continuing anyway" );
}
/* Fill p_demux fields */
DEMUX_INIT_COMMON(); p_sys = p_demux->p_sys;
p_sys->b_start = true;
p_sys->i_mux_rate = 0;
p_sys->b_big_endian = b_big_endian;
p_sys->i_pts = 0;
p_sys->i_time_offset = 0;
/* Load the A52 packetizer */
INIT_APACKETIZER( p_sys->p_packetizer, 'a', '5', '2', ' ' );
LOAD_PACKETIZER_OR_FAIL( p_sys->p_packetizer, "A52" );
/* Create one program */
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->p_packetizer->fmt_in );
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: frees unused data
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
DESTROY_PACKETIZER( p_sys->p_packetizer );
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( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block_in, *p_block_out;
/* Align stream */
int64_t i_pos = stream_Tell( p_demux->s );
if( i_pos % 2 ) stream_Read( p_demux->s, NULL, 1 );
if( !( p_block_in = stream_Block( p_demux->s, A52_PACKET_SIZE ) ) )
{
return 0;
}
if( !p_sys->b_big_endian && p_block_in->i_buffer )
{
/* Convert to big endian */
#ifdef HAVE_SWAB
swab(p_block_in->p_buffer, p_block_in->p_buffer, p_block_in->i_buffer);
#else
int i;
uint8_t *p_tmp, tmp;
p_tmp = p_block_in->p_buffer;
for( i = p_block_in->i_buffer / 2 ; i-- ; )
{
tmp = p_tmp[0];
p_tmp[0] = p_tmp[1];
p_tmp[1] = tmp;
p_tmp += 2;
}
#endif
}
if( p_sys->b_start )
p_block_in->i_pts = p_block_in->i_dts = 1;
else
p_block_in->i_pts = p_block_in->i_dts = 0;
while( (p_block_out = p_sys->p_packetizer->pf_packetize(
p_sys->p_packetizer, &p_block_in )) )
{
p_sys->b_start = false;
while( p_block_out )
{
block_t *p_next = p_block_out->p_next;
/* We assume a constant bitrate */
if( p_block_out->i_length )
{
p_sys->i_mux_rate =
p_block_out->i_buffer * INT64_C(1000000)/p_block_out->i_length;
}
p_sys->i_pts = p_block_out->i_pts;
/* Correct timestamp */
p_block_out->i_pts += p_sys->i_time_offset;
p_block_out->i_dts += p_sys->i_time_offset;
/* set PCR */
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block_out->i_dts );
es_out_Send( p_demux->out, p_sys->p_es, p_block_out );
p_block_out = p_next;
}
}
return 1;
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
demux_sys_t *p_sys = p_demux->p_sys;
bool *pb_bool;
int64_t *pi64;
int i_ret;
switch( i_query )
{
case DEMUX_HAS_UNSUPPORTED_META:
pb_bool = (bool*)va_arg( args, bool* );
*pb_bool = true;
return VLC_SUCCESS;
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = p_sys->i_pts + p_sys->i_time_offset;
return VLC_SUCCESS;
case DEMUX_SET_TIME: /* TODO implement a high precicsion seek */
default:
i_ret = demux_vaControlHelper( p_demux->s,
0, -1,
8*p_sys->i_mux_rate, 1, i_query, args );
if( !i_ret && p_sys->i_mux_rate > 0 &&
( i_query == DEMUX_SET_POSITION || i_query == DEMUX_SET_TIME ) )
{
const int64_t i_time = INT64_C(1000000) * stream_Tell(p_demux->s) /
p_sys->i_mux_rate;
/* Fix time_offset */
if( i_time >= 0 )
p_sys->i_time_offset = i_time - p_sys->i_pts;
}
return i_ret;
}
}
/*****************************************************************************
* CheckSync: Check if buffer starts with an A52 sync code
*****************************************************************************/
static int CheckSync( const uint8_t *p_peek, bool *p_big_endian )
{
/* Little endian version of the bitstream */
if( p_peek[0] == 0x77 && p_peek[1] == 0x0b &&
p_peek[4] < 0x60 /* bsid < 12 */ )
{
*p_big_endian = false;
return VLC_SUCCESS;
}
/* Big endian version of the bitstream */
else if( p_peek[0] == 0x0b && p_peek[1] == 0x77 &&
p_peek[5] < 0x60 /* bsid < 12 */ )
{
*p_big_endian = true;
return VLC_SUCCESS;
}
return VLC_EGENERIC;
}
modules/demux/dts.c deleted 100644 → 0
View file @ 437bb4a8
/*****************************************************************************
* dts.c : raw DTS stream input module for vlc
*****************************************************************************
* Copyright (C) 2001-2007 the VideoLAN team
* $Id$
*
* Authors: Gildas Bazin <gbazin@netcourrier.com>
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_demux.h>
#include <vlc_codec.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin();
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_DEMUX );
set_description( N_("Raw DTS demuxer") );
set_capability( "demux", 155 );
set_callbacks( Open, Close );
add_shortcut( "dts" );
vlc_module_end();
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Demux ( demux_t * );
static int Control( demux_t *, int, va_list );
struct demux_sys_t
{
bool b_start;
es_out_id_t *p_es;
/* Packetizer */
decoder_t *p_packetizer;
mtime_t i_pts;
mtime_t i_time_offset;
int i_mux_rate;
};
static int CheckSync( const uint8_t *p_peek );
#define DTS_PACKET_SIZE 16384
#define DTS_PROBE_SIZE (DTS_PACKET_SIZE * 4)
#define DTS_MAX_HEADER_SIZE 11
/*****************************************************************************
* Open: initializes ES structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
const uint8_t *p_peek;
int i_peek = 0;
/* Check if we are dealing with a WAV file */
if( stream_Peek( p_demux->s, &p_peek, 20 ) == 20 &&
!memcmp( p_peek, "RIFF", 4 ) && !memcmp( &p_peek[8], "WAVE", 4 ) )
{
/* Find the wave format header */
i_peek = 12 + 8;
while( memcmp( p_peek + i_peek - 8, "fmt ", 4 ) )
{
uint32_t i_len = GetDWLE( p_peek + i_peek - 4 );
if( i_len > DTS_PROBE_SIZE || i_peek + i_len > DTS_PROBE_SIZE )
return VLC_EGENERIC;
i_peek += i_len + 8;
if( stream_Peek( p_demux->s, &p_peek, i_peek ) != i_peek )
return VLC_EGENERIC;
}
/* Sanity check the wave format header */
uint32_t i_len = GetDWLE( p_peek + i_peek - 4 );
if( i_len > DTS_PROBE_SIZE )
return VLC_EGENERIC;
i_peek += i_len + 8;
if( stream_Peek( p_demux->s, &p_peek, i_peek ) != i_peek )
return VLC_EGENERIC;
if( GetWLE( p_peek + i_peek - i_len - 8 /* wFormatTag */ ) !=
1 /* WAVE_FORMAT_PCM */ )
return VLC_EGENERIC;
if( GetWLE( p_peek + i_peek - i_len - 6 /* nChannels */ ) != 2 )
return VLC_EGENERIC;
if( GetDWLE( p_peek + i_peek - i_len - 4 /* nSamplesPerSec */ ) !=
44100 )
return VLC_EGENERIC;
/* Skip the wave header */
while( memcmp( p_peek + i_peek - 8, "data", 4 ) )
{
uint32_t i_len = GetDWLE( p_peek + i_peek - 4 );
if( i_len > DTS_PROBE_SIZE || i_peek + i_len > DTS_PROBE_SIZE )
return VLC_EGENERIC;
i_peek += i_len + 8;
if( stream_Peek( p_demux->s, &p_peek, i_peek ) != i_peek )
return VLC_EGENERIC;
}
/* Some DTS wav files don't begin with a sync code so we do a more
* extensive search */
int i_size = stream_Peek( p_demux->s, &p_peek, DTS_PROBE_SIZE );
i_size -= DTS_MAX_HEADER_SIZE;
while( i_peek < i_size )
{
if( CheckSync( p_peek + i_peek ) != VLC_SUCCESS )
/* The data is stored in 16 bits words */
i_peek += 2;
else
break;
}
}
/* Have a peep at the show. */
CHECK_PEEK( p_peek, i_peek + DTS_MAX_HEADER_SIZE * 2 );
if( CheckSync( p_peek + i_peek ) != VLC_SUCCESS )
{
if( !p_demux->b_force )
return VLC_EGENERIC;
/* User forced */
msg_Err( p_demux, "this doesn't look like a DTS audio stream, "
"continuing anyway" );
}
DEMUX_INIT_COMMON(); p_sys = p_demux->p_sys;
p_sys->b_start = true;
p_sys->i_mux_rate = 0;
p_sys->i_pts = 0;
p_sys->i_time_offset = 0;
INIT_APACKETIZER( p_sys->p_packetizer, 'd','t','s',' ' );
LOAD_PACKETIZER_OR_FAIL( p_sys->p_packetizer, "DTS" );
p_sys->p_es = es_out_Add( p_demux->out, &p_sys->p_packetizer->fmt_in );
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: frees unused data
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
DESTROY_PACKETIZER( p_sys->p_packetizer );
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( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block_in, *p_block_out;
if( !( p_block_in = stream_Block( p_demux->s, DTS_PACKET_SIZE ) ) )
{
return 0;
}
if( p_sys->b_start )
p_block_in->i_pts = p_block_in->i_dts = 1;
else
p_block_in->i_pts = p_block_in->i_dts = 0;
while( (p_block_out = p_sys->p_packetizer->pf_packetize(
p_sys->p_packetizer, &p_block_in )) )
{
p_sys->b_start = false;
while( p_block_out )
{
block_t *p_next = p_block_out->p_next;
/* We assume a constant bitrate */
if( p_block_out->i_length )
{
p_sys->i_mux_rate =
p_block_out->i_buffer * INT64_C(1000000) / p_block_out->i_length;
}
/* Correct timestamp */
p_block_out->i_pts += p_sys->i_time_offset;
p_block_out->i_dts += p_sys->i_time_offset;
/* set PCR */
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block_out->i_dts );
es_out_Send( p_demux->out, p_sys->p_es, p_block_out );
p_block_out = p_next;
}
}
return 1;
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
demux_sys_t *p_sys = p_demux->p_sys;
bool *pb_bool;
int64_t *pi64;
int i_ret;
switch( i_query )
{
case DEMUX_HAS_UNSUPPORTED_META:
pb_bool = (bool*)va_arg( args, bool* );
*pb_bool = true;
return VLC_SUCCESS;
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = p_sys->i_pts + p_sys->i_time_offset;
return VLC_SUCCESS;
case DEMUX_SET_TIME: /* TODO implement a high precicsion seek */
default:
i_ret = demux_vaControlHelper( p_demux->s,
0, -1,
8*p_sys->i_mux_rate, 1, i_query, args );
if( !i_ret && p_sys->i_mux_rate > 0 &&
( i_query == DEMUX_SET_POSITION || i_query == DEMUX_SET_TIME ) )
{
const int64_t i_time = INT64_C(1000000) * stream_Tell(p_demux->s) /
p_sys->i_mux_rate;
/* Fix time_offset */
if( i_time >= 0 )
p_sys->i_time_offset = i_time - p_sys->i_pts;
}
return i_ret;
}
}
/*****************************************************************************
* CheckSync: Check if buffer starts with a DTS sync code
*****************************************************************************/
static int CheckSync( const uint8_t *p_peek )
{
/* 14 bits, little endian version of the bitstream */
if( p_peek[0] == 0xff && p_peek[1] == 0x1f &&
p_peek[2] == 0x00 && p_peek[3] == 0xe8 &&
(p_peek[4] & 0xf0) == 0xf0 && p_peek[5] == 0x07 )
{
return VLC_SUCCESS;
}
/* 14 bits, big endian version of the bitstream */
else if( p_peek[0] == 0x1f && p_peek[1] == 0xff &&
p_peek[2] == 0xe8 && p_peek[3] == 0x00 &&
p_peek[4] == 0x07 && (p_peek[5] & 0xf0) == 0xf0)
{
return VLC_SUCCESS;
}
/* 16 bits, big endian version of the bitstream */
else if( p_peek[0] == 0x7f && p_peek[1] == 0xfe &&
p_peek[2] == 0x80 && p_peek[3] == 0x01 )
{
return VLC_SUCCESS;
}
/* 16 bits, little endian version of the bitstream */
else if( p_peek[0] == 0xfe && p_peek[1] == 0x7f &&
p_peek[2] == 0x01 && p_peek[3] == 0x80 )
{
return VLC_SUCCESS;
}
return VLC_EGENERIC;
}
modules/demux/mpeg/Modules.am
View file @ 8b5d7fe8
SOURCES_m4a = m4a.c
SOURCES_m4v = m4v.c
SOURCES_mpga = mpga.c
SOURCES_es = es.c
SOURCES_mpgv = mpgv.c
SOURCES_h264 = h264.c
libvlc_LTLIBRARIES += \
libmpga_plugin.la \
libes_plugin.la \
libmpgv_plugin.la \
libm4a_plugin.la \
libm4v_plugin.la \
libh264_plugin.la \
$(NULL)
modules/demux/mpeg/m4a.c deleted 100644 → 0
View file @ 437bb4a8
/*****************************************************************************
* m4a.c : MPEG-4 audio demuxer
*****************************************************************************
* Copyright (C) 2002-2004 the VideoLAN team
* $Id$
*
* Authors: Gildas Bazin <gbazin@videolan.org>
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_demux.h>
#include <vlc_codec.h>
#include <vlc_input.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin();
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_DEMUX );
set_description( N_("MPEG-4 audio demuxer" ) );
set_capability( "demux", 110 );
set_callbacks( Open, Close );
add_shortcut( "m4a" );
add_shortcut( "mp4a" );
add_shortcut( "aac" );
vlc_module_end();
/*****************************************************************************
* Local prototypes
*****************************************************************************/
struct demux_sys_t
{
bool b_start;
es_out_id_t *p_es;
decoder_t *p_packetizer;
mtime_t i_pts;
int64_t i_bytes;
mtime_t i_time_offset;
int i_bitrate_avg;
};
static int Demux( demux_t * );
static int Control( demux_t *, int, va_list );
#define M4A_PACKET_SIZE 4096
#define M4A_PTS_START 1
/*****************************************************************************
* Open: initializes demux structures
*****************************************************************************/
static int Open( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
const uint8_t *p_peek;
int b_forced = false;
if( demux_IsPathExtension( p_demux, ".aac" ) )
b_forced = true;
if( !p_demux->b_force && !b_forced )
return VLC_EGENERIC;
/* peek the begining (10 is for adts header) */
if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
{
msg_Err( p_demux, "cannot peek" );
return VLC_EGENERIC;
}
if( !strncmp( (char *)p_peek, "ADIF", 4 ) )
{
msg_Err( p_demux, "ADIF file. Not yet supported. (Please report)" );
return VLC_EGENERIC;
}
p_demux->pf_demux = Demux;
p_demux->pf_control= Control;
p_demux->p_sys = p_sys = calloc( sizeof( demux_sys_t ), 1 );
p_sys->b_start = true;
/* Load the mpeg 4 audio packetizer */
INIT_APACKETIZER( p_sys->p_packetizer, 'm', 'p', '4', 'a' );
es_format_Init( &p_sys->p_packetizer->fmt_out, UNKNOWN_ES, 0 );
LOAD_PACKETIZER_OR_FAIL( p_sys->p_packetizer, "mp4 audio" );
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: frees unused data
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
DESTROY_PACKETIZER( p_sys->p_packetizer );
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( demux_t *p_demux)
{
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block_in, *p_block_out;
if( ( p_block_in = stream_Block( p_demux->s, M4A_PACKET_SIZE ) ) == NULL )
{
return 0;
}
p_block_in->i_pts = p_block_in->i_dts = p_sys->b_start ? M4A_PTS_START : 0;
p_sys->b_start = false;
while( (p_block_out = p_sys->p_packetizer->pf_packetize(
p_sys->p_packetizer, &p_block_in )) )
{
while( p_block_out )
{
block_t *p_next = p_block_out->p_next;
if( p_sys->p_es == NULL )
{
p_sys->p_packetizer->fmt_out.b_packetized = true;
p_sys->p_es = es_out_Add( p_demux->out,
&p_sys->p_packetizer->fmt_out);
}
p_sys->i_pts = p_block_out->i_pts;
if( p_sys->i_pts > M4A_PTS_START + INT64_C(500000) )
p_sys->i_bitrate_avg =
8*INT64_C(1000000)*p_sys->i_bytes/(p_sys->i_pts-M4A_PTS_START);
p_sys->i_bytes += p_block_out->i_buffer;
/* Correct timestamp */
p_block_out->i_pts += p_sys->i_time_offset;
p_block_out->i_dts += p_sys->i_time_offset;
/* */
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block_out->i_dts );
es_out_Send( p_demux->out, p_sys->p_es, p_block_out );
p_block_out = p_next;
}
}
return 1;
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( demux_t *p_demux, int i_query, va_list args )
{
demux_sys_t *p_sys = p_demux->p_sys;
bool *pb_bool;
int64_t *pi64;
int i_ret;
switch( i_query )
{
case DEMUX_HAS_UNSUPPORTED_META:
pb_bool = (bool *)va_arg( args, bool* );
*pb_bool = true;
return VLC_SUCCESS;
case DEMUX_GET_TIME:
pi64 = (int64_t*)va_arg( args, int64_t * );
*pi64 = p_sys->i_pts + p_sys->i_time_offset;
return VLC_SUCCESS;
case DEMUX_SET_TIME: /* TODO high precision seek for multi-input */
default:
i_ret = demux_vaControlHelper( p_demux->s, 0, -1,
p_sys->i_bitrate_avg, 1, i_query, args);
/* Fix time_offset */
if( (i_query == DEMUX_SET_POSITION || i_query == DEMUX_SET_TIME ) &&
i_ret == VLC_SUCCESS && p_sys->i_bitrate_avg > 0 )
{
int64_t i_time = INT64_C(8000000) * stream_Tell(p_demux->s) /
p_sys->i_bitrate_avg;
if( i_time >= 0 )
p_sys->i_time_offset = i_time - p_sys->i_pts;
}
return i_ret;
}
}
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