/*****************************************************************************
* mpeg_audio.c: parse MPEG audio sync info and packetize the stream
*****************************************************************************
- * Copyright (C) 2001-2003 VideoLAN
- * $Id: mpeg_audio.c,v 1.27 2004/03/02 16:44:21 hartman Exp $
+ * Copyright (C) 2001-2003 the VideoLAN team
+ * $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Eric Petit <titer@videolan.org>
* Christophe Massiot <massiot@via.ecp.fr>
- * Gildas Bazin <gbazin@netcourrier.com>
+ * 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
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <vlc/vlc.h>
-#include <vlc/decoder.h>
-#include <vlc/aout.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_codec.h>
+#include <vlc_aout.h>
-#include "vlc_block_helper.h"
+#include <vlc_block_helper.h>
/*****************************************************************************
* decoder_sys_t : decoder descriptor
struct decoder_sys_t
{
/* Module mode */
- vlc_bool_t b_packetizer;
+ bool b_packetizer;
/*
* Input properties
unsigned int i_channels_conf, i_channels;
unsigned int i_rate, i_max_frame_size, i_frame_length;
unsigned int i_layer, i_bit_rate;
+
+ bool b_discontinuity;
};
enum {
* Module descriptor
*****************************************************************************/
vlc_module_begin();
- set_description( _("MPEG audio layer I/II/III parser") );
-#if defined(SYS_DARWIN)
- set_capability( "decoder", 5 );
+ set_description( N_("MPEG audio layer I/II/III decoder") );
+ set_category( CAT_INPUT );
+ set_subcategory( SUBCAT_INPUT_ACODEC );
+#if defined(UNDER_CE)
+ set_capability( "decoder", 5 );
#else
set_capability( "decoder", 100 );
#endif
set_callbacks( OpenDecoder, CloseDecoder );
add_submodule();
- set_description( _("MPEG audio layer I/II/III packetizer") );
+ set_description( N_("MPEG audio layer I/II/III packetizer") );
set_capability( "packetizer", 10 );
set_callbacks( OpenPacketizer, CloseDecoder );
vlc_module_end();
return VLC_EGENERIC;
}
- /* Allocate the memory needed to store the decoder's structure */
- if( ( p_dec->p_sys = p_sys =
- (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
+ /* HACK: Don't use this codec if we don't have an mpga audio filter */
+ if( p_dec->i_object_type == VLC_OBJECT_DECODER &&
+ !module_exists( "mpgatofixed32" ) )
{
- msg_Err( p_dec, "out of memory" );
return VLC_EGENERIC;
}
+ /* Allocate the memory needed to store the decoder's structure */
+ if( ( p_dec->p_sys = p_sys =
+ (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
+ return VLC_ENOMEM;
+
/* Misc init */
- p_sys->b_packetizer = VLC_FALSE;
+ p_sys->b_packetizer = false;
p_sys->i_state = STATE_NOSYNC;
aout_DateSet( &p_sys->end_date, 0 );
- p_sys->bytestream = block_BytestreamInit( p_dec );
+ p_sys->bytestream = block_BytestreamInit();
+ p_sys->b_discontinuity = false;
/* Set output properties */
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.i_codec = VLC_FOURCC('m','p','g','a');
+ p_dec->fmt_out.audio.i_rate = 0; /* So end_date gets initialized */
/* Set callback */
p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
int i_ret = OpenDecoder( p_this );
- if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = VLC_TRUE;
+ if( i_ret == VLC_SUCCESS ) p_dec->p_sys->b_packetizer = true;
return i_ret;
}
if( !pp_block || !*pp_block ) return NULL;
- if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts )
+ if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
- /* We've just started the stream, wait for the first PTS. */
+ if( (*pp_block)->i_flags&BLOCK_FLAG_CORRUPTED )
+ {
+ p_sys->i_state = STATE_NOSYNC;
+ block_BytestreamFlush( &p_sys->bytestream );
+ }
+// aout_DateSet( &p_sys->end_date, 0 );
block_Release( *pp_block );
+ p_sys->b_discontinuity = true;
return NULL;
}
- if( (*pp_block)->i_flags&BLOCK_FLAG_DISCONTINUITY )
+ if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts )
{
- p_sys->i_state = STATE_NOSYNC;
+ /* We've just started the stream, wait for the first PTS. */
+ msg_Dbg( p_dec, "waiting for PTS" );
+ block_Release( *pp_block );
+ return NULL;
}
block_BytestreamPush( &p_sys->bytestream, *pp_block );
msg_Dbg( p_dec, "emulated startcode" );
block_SkipByte( &p_sys->bytestream );
p_sys->i_state = STATE_NOSYNC;
+ p_sys->b_discontinuity = true;
break;
}
if( p_sys->i_bit_rate == 0 )
{
- /* Free birate, but 99% emulated startcode :( */
+ /* Free bitrate, but 99% emulated startcode :( */
if( p_dec->p_sys->i_free_frame_size == MPGA_HEADER_SIZE )
{
msg_Dbg( p_dec, "free bitrate mode");
}
- p_sys->i_frame_size = p_sys->i_free_frame_size;
+ /* The -1 below is to account for the frame padding */
+ p_sys->i_frame_size = p_sys->i_free_frame_size - 1;
}
p_sys->i_state = STATE_NEXT_SYNC;
msg_Dbg( p_dec, "emulated startcode on next frame" );
block_SkipByte( &p_sys->bytestream );
p_sys->i_state = STATE_NOSYNC;
+ p_sys->b_discontinuity = true;
break;
}
case STATE_SEND_DATA:
if( !(p_buf = GetOutBuffer( p_dec, &p_out_buffer )) )
{
- //p_dec->b_error = VLC_TRUE;
+ //p_dec->b_error = true;
return NULL;
}
if( p_dec->fmt_out.audio.i_rate != p_sys->i_rate )
{
- msg_Info( p_dec, "MPGA channels:%d samplerate:%d bitrate:%d",
+ msg_Dbg( p_dec, "MPGA channels:%d samplerate:%d bitrate:%d",
p_sys->i_channels, p_sys->i_rate, p_sys->i_bit_rate );
aout_DateInit( &p_sys->end_date, p_sys->i_rate );
p_dec->fmt_out.audio.i_physical_channels =
p_sys->i_channels_conf & AOUT_CHAN_PHYSMASK;
- p_dec->fmt_out.i_bitrate = p_sys->i_bit_rate;
+ p_dec->fmt_out.i_bitrate = p_sys->i_bit_rate * 1000;
if( p_sys->b_packetizer )
{
p_buf->start_date = aout_DateGet( &p_sys->end_date );
p_buf->end_date =
aout_DateIncrement( &p_sys->end_date, p_sys->i_frame_length );
+ p_buf->b_discontinuity = p_sys->b_discontinuity;
+ p_sys->b_discontinuity = false;
/* Hack for libmad filter */
p_buf->i_nb_bytes = p_sys->i_frame_size + MAD_BUFFER_GUARD;
p_block->i_pts = p_block->i_dts = aout_DateGet( &p_sys->end_date );
p_block->i_length =
- aout_DateIncrement( &p_sys->end_date, p_sys->i_frame_length ) -
- p_block->i_pts;
+ aout_DateIncrement( &p_sys->end_date, p_sys->i_frame_length ) - p_block->i_pts;
return p_block;
}
};
int i_version, i_mode, i_emphasis;
- vlc_bool_t b_padding, b_mpeg_2_5, b_crc;
+ bool b_padding, b_mpeg_2_5, b_crc;
int i_frame_size = 0;
int i_bitrate_index, i_samplerate_index;
int i_max_bit_rate;
default:
break;
}
+
+ /* Free bitrate mode can support higher bitrates */
+ if( !*pi_bit_rate ) *pi_max_frame_size *= 2;
}
else
{
projects / vlc / blobdiff