/*****************************************************************************
- * flac.c: flac decoder/packetizer module making use of libflac
+ * flac.c: flac decoder/packetizer/encoder module making use of libflac
*****************************************************************************
- * Copyright (C) 1999-2001 VideoLAN
- * $Id: flac.c,v 1.1 2003/11/21 01:45:48 gbazin Exp $
+ * Copyright (C) 1999-2001 the VideoLAN team
+ * $Id$
*
- * Authors: Gildas Bazin <gbazin@netcourrier.com>
- * Sigmund Augdal <sigmunau@idi.ntnu.no>
+ * Authors: Gildas Bazin <gbazin@videolan.org>
+ * Sigmund Augdal Helberg <dnumgis@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
*
* 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
*****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
#include <vlc/vlc.h>
-#include <vlc/decoder.h>
-#include <vlc/input.h>
+#include <vlc_codec.h>
+#include <vlc_aout.h>
-#include <FLAC/stream_decoder.h>
+#ifdef HAVE_FLAC_STREAM_DECODER_H
+# include <FLAC/stream_decoder.h>
+# include <FLAC/stream_encoder.h>
+# define USE_LIBFLAC
+#endif
-#include "vlc_block_helper.h"
+#include <vlc_block_helper.h>
+#include <vlc_bits.h>
#define MAX_FLAC_HEADER_SIZE 16
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT >= 8
+# define USE_NEW_FLAC_API
+#endif
+
/*****************************************************************************
* decoder_sys_t : FLAC decoder descriptor
*****************************************************************************/
struct decoder_sys_t
{
- /* Module mode */
- vlc_bool_t b_packetizer;
-
/*
* Input properties
*/
/*
* FLAC properties
*/
+#ifdef USE_LIBFLAC
FLAC__StreamDecoder *p_flac;
+ FLAC__StreamMetadata_StreamInfo stream_info;
+#else
+ struct
+ {
+ unsigned min_blocksize, max_blocksize;
+ unsigned min_framesize, max_framesize;
+ unsigned sample_rate;
+ unsigned channels;
+ unsigned bits_per_sample;
+ } stream_info;
+#endif
vlc_bool_t b_stream_info;
- FLAC__StreamMetadata_StreamInfo stream_info;
/*
* Common properties
STATE_SEND_DATA
};
-static int pi_channels_maps[6] =
+static int pi_channels_maps[7] =
{
0,
AOUT_CHAN_CENTER,
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
| AOUT_CHAN_REARRIGHT,
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
+ | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
+ AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
+ | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE
};
/*****************************************************************************
static int OpenPacketizer( vlc_object_t * );
static void CloseDecoder ( vlc_object_t * );
+#ifdef USE_LIBFLAC
+static int OpenEncoder ( vlc_object_t * );
+static void CloseEncoder ( vlc_object_t * );
+#endif
+
+#ifdef USE_LIBFLAC
static aout_buffer_t *DecodeBlock( decoder_t *, block_t ** );
+#endif
static block_t *PacketizeBlock( decoder_t *, block_t ** );
-static int SyncInfo( decoder_t *, uint8_t *, int *, int *, int *,int * );
+static int SyncInfo( decoder_t *, uint8_t *, unsigned int *, unsigned int *,
+ unsigned int *,int * );
+#ifdef USE_LIBFLAC
static FLAC__StreamDecoderReadStatus
DecoderReadCallback( const FLAC__StreamDecoder *decoder,
FLAC__byte buffer[], unsigned *bytes, void *client_data );
static void decoder_state_error( decoder_t *p_dec,
FLAC__StreamDecoderState state );
+#endif
static uint64_t read_utf8( const uint8_t *p_buf, int *pi_read );
static uint8_t flac_crc8( const uint8_t *data, unsigned len );
*****************************************************************************/
vlc_module_begin();
+ set_category( CAT_INPUT );
+ set_subcategory( SUBCAT_INPUT_ACODEC );
+ add_shortcut( "flac" );
+
+#ifdef USE_LIBFLAC
set_description( _("Flac audio decoder") );
set_capability( "decoder", 100 );
set_callbacks( OpenDecoder, CloseDecoder );
add_submodule();
+ set_description( _("Flac audio encoder") );
+ set_capability( "encoder", 100 );
+ set_callbacks( OpenEncoder, CloseEncoder );
+
+ add_submodule();
+#endif
set_description( _("Flac audio packetizer") );
set_capability( "packetizer", 100 );
set_callbacks( OpenPacketizer, CloseDecoder );
(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
{
msg_Err( p_dec, "out of memory" );
- return VLC_EGENERIC;
+ return VLC_ENOMEM;
}
/* Misc init */
aout_DateSet( &p_sys->end_date, 0 );
- p_sys->b_packetizer = VLC_FALSE;
p_sys->i_state = STATE_NOSYNC;
+ p_sys->b_stream_info = VLC_FALSE;
+ p_sys->p_block=NULL;
+ p_sys->bytestream = block_BytestreamInit();
- p_sys->bytestream = block_BytestreamInit( p_dec );
-
+#ifdef USE_LIBFLAC
/* Take care of flac init */
if( !(p_sys->p_flac = FLAC__stream_decoder_new()) )
{
return VLC_EGENERIC;
}
+#ifdef USE_NEW_FLAC_API
+ if( FLAC__stream_decoder_init_stream( p_sys->p_flac,
+ DecoderReadCallback,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ DecoderWriteCallback,
+ DecoderMetadataCallback,
+ DecoderErrorCallback,
+ p_dec )
+ != FLAC__STREAM_DECODER_INIT_STATUS_OK )
+ {
+ msg_Err( p_dec, "FLAC__stream_decoder_init_stream() failed" );
+ FLAC__stream_decoder_delete( p_sys->p_flac );
+ free( p_sys );
+ return VLC_EGENERIC;
+ }
+#else
FLAC__stream_decoder_set_read_callback( p_sys->p_flac,
DecoderReadCallback );
FLAC__stream_decoder_set_write_callback( p_sys->p_flac,
FLAC__stream_decoder_set_client_data( p_sys->p_flac, p_dec );
FLAC__stream_decoder_init( p_sys->p_flac );
+#endif
+#endif
/* Set output properties */
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','3','2');
/* Set callbacks */
+#ifdef USE_LIBFLAC
p_dec->pf_decode_audio = DecodeBlock;
+#endif
+
+ return VLC_SUCCESS;
+}
+
+static int OpenPacketizer( vlc_object_t *p_this )
+{
+ decoder_t *p_dec = (decoder_t*)p_this;
+ es_format_t es_save = p_dec->fmt_out;
+ int i_ret;
+
+ /* */
+ es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
+
+ i_ret = OpenDecoder( p_this );
+ p_dec->pf_decode_audio = NULL;
p_dec->pf_packetize = PacketizeBlock;
+ /* Set output properties */
+ p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','a','c');
+
+ if( i_ret != VLC_SUCCESS )
+ {
+ es_format_Clean( &p_dec->fmt_out );
+ p_dec->fmt_out = es_save;
+ }
+ return i_ret;
+}
+
+/*****************************************************************************
+ * CloseDecoder: flac decoder destruction
+ *****************************************************************************/
+static void CloseDecoder( vlc_object_t *p_this )
+{
+ decoder_t *p_dec = (decoder_t *)p_this;
+ decoder_sys_t *p_sys = p_dec->p_sys;
+
+#ifdef USE_LIBFLAC
+ FLAC__stream_decoder_finish( p_sys->p_flac );
+ FLAC__stream_decoder_delete( p_sys->p_flac );
+#endif
+
+ if( p_sys->p_block ) free( p_sys->p_block );
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * ProcessHeader: process Flac header.
+ *****************************************************************************/
+static void ProcessHeader( decoder_t *p_dec )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+
+#ifdef USE_LIBFLAC
+ if( !p_dec->fmt_in.i_extra ) return;
/* Decode STREAMINFO */
msg_Dbg( p_dec, "decode STREAMINFO" );
- p_sys->p_block = block_New( p_dec, p_dec->fmt_in.i_extra + 4 );
- memcpy( p_sys->p_block->p_buffer + 4, p_dec->fmt_in.p_extra,
+ p_sys->p_block = block_New( p_dec, p_dec->fmt_in.i_extra );
+ memcpy( p_sys->p_block->p_buffer, p_dec->fmt_in.p_extra,
p_dec->fmt_in.i_extra );
- memcpy( p_sys->p_block->p_buffer, "fLaC", 4 );
FLAC__stream_decoder_process_until_end_of_metadata( p_sys->p_flac );
msg_Dbg( p_dec, "STREAMINFO decoded" );
- return VLC_SUCCESS;
-}
+#else
+ bs_t bs;
-static int OpenPacketizer( vlc_object_t *p_this )
-{
- decoder_t *p_dec = (decoder_t*)p_this;
+ if( !p_dec->fmt_in.i_extra ) return;
+
+ bs_init( &bs, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
+
+ p_sys->stream_info.min_blocksize = bs_read( &bs, 16 );
+ p_sys->stream_info.max_blocksize = bs_read( &bs, 16 );
+
+ p_sys->stream_info.min_framesize = bs_read( &bs, 24 );
+ p_sys->stream_info.max_framesize = bs_read( &bs, 24 );
+
+ p_sys->stream_info.sample_rate = bs_read( &bs, 20 );
+ p_sys->stream_info.channels = bs_read( &bs, 3 ) + 1;
+ p_sys->stream_info.bits_per_sample = bs_read( &bs, 5 ) + 1;
+#endif
- int i_ret = OpenDecoder( p_this );
+ if( !p_sys->b_stream_info ) return;
- if( i_ret == VLC_SUCCESS )
+ if( p_dec->fmt_out.i_codec == VLC_FOURCC('f','l','a','c') )
{
- p_dec->p_sys->b_packetizer = VLC_TRUE;
- p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','a','c');
+ p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra;
+ p_dec->fmt_out.p_extra =
+ realloc( p_dec->fmt_out.p_extra, p_dec->fmt_out.i_extra );
+ memcpy( p_dec->fmt_out.p_extra,
+ p_dec->fmt_in.p_extra, p_dec->fmt_out.i_extra );
}
-
- return i_ret;
}
/****************************************************************************
if( !pp_block || !*pp_block ) return NULL;
-#if 0
- if( (*pp_block)->b_discontinuity )
+ if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
- p_sys->i_state = STATE_NOSYNC;
+ 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 );
+ return NULL;
+ }
+
+ if( !p_sys->b_stream_info ) ProcessHeader( p_dec );
+
+ if( p_sys->stream_info.channels > 6 )
+ {
+ msg_Err( p_dec, "This stream uses too many audio channels" );
+ return NULL;
+ }
+
+ if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts )
+ {
+ /* We've just started the stream, wait for the first PTS. */
+ block_Release( *pp_block );
+ return NULL;
+ }
+ else if( !aout_DateGet( &p_sys->end_date ) )
+ {
+ /* The first PTS is as good as anything else. */
+ aout_DateSet( &p_sys->end_date, (*pp_block)->i_pts );
}
-#endif
block_BytestreamPush( &p_sys->bytestream, *pp_block );
p_sys->i_state = STATE_NOSYNC;
break;
}
+ if( p_sys->i_rate != p_dec->fmt_out.audio.i_rate )
+ {
+ p_dec->fmt_out.audio.i_rate = p_sys->i_rate;
+ aout_DateInit( &p_sys->end_date, p_sys->i_rate );
+ }
p_sys->i_state = STATE_NEXT_SYNC;
p_sys->i_frame_size = 1;
if( p_header[0] == 0xFF && p_header[1] == 0xF8 )
{
/* Check if frame is valid and get frame info */
- p_sys->i_frame_length =
+ int i_frame_length =
SyncInfo( p_dec, p_header,
&p_sys->i_channels,
&p_sys->i_channels_conf,
&p_sys->i_rate,
&p_sys->i_bits_per_sample );
- if( p_sys->i_frame_length )
+ if( i_frame_length )
{
p_sys->i_state = STATE_SEND_DATA;
break;
/* Need more data */
return NULL;
}
- break;
case STATE_SEND_DATA:
p_sout_block = block_New( p_dec, p_sys->i_frame_size );
p_sys->i_state = STATE_NOSYNC;
/* Date management */
- p_sout_block->i_pts = aout_DateGet( &p_sys->end_date );
+ p_sout_block->i_pts =
+ p_sout_block->i_dts = aout_DateGet( &p_sys->end_date );
+ aout_DateIncrement( &p_sys->end_date, p_sys->i_frame_length );
p_sout_block->i_length =
- aout_DateIncrement( &p_sys->end_date, p_sys->i_frame_length );
+ aout_DateGet( &p_sys->end_date ) - p_sout_block->i_pts;
return p_sout_block;
}
return NULL;
}
+#ifdef USE_LIBFLAC
/****************************************************************************
* DecodeBlock: the whole thing
****************************************************************************/
if( !pp_block || !*pp_block ) return NULL;
- if( !aout_DateGet( &p_sys->end_date ) && !(*pp_block)->i_pts )
- {
- /* We've just started the stream, wait for the first PTS. */
- block_Release( *pp_block );
- return NULL;
- }
-
p_sys->p_aout_buffer = 0;
if( ( p_sys->p_block = PacketizeBlock( p_dec, pp_block ) ) )
{
{
decoder_state_error( p_dec,
FLAC__stream_decoder_get_state( p_sys->p_flac ) );
+ FLAC__stream_decoder_flush( p_dec->p_sys->p_flac );
}
+
+ /* If the decoder is in the "aborted" state,
+ * FLAC__stream_decoder_process_single() won't return an error. */
+ if( FLAC__stream_decoder_get_state(p_dec->p_sys->p_flac)
+ == FLAC__STREAM_DECODER_ABORTED )
+ {
+ FLAC__stream_decoder_flush( p_dec->p_sys->p_flac );
+ }
+
block_Release( p_sys->p_block );
+ p_sys->p_block = NULL;
}
return p_sys->p_aout_buffer;
}
-/*****************************************************************************
- * CloseDecoder: flac decoder destruction
- *****************************************************************************/
-static void CloseDecoder( vlc_object_t *p_this )
-{
- decoder_t *p_dec = (decoder_t *)p_this;
- decoder_sys_t *p_sys = p_dec->p_sys;
-
- FLAC__stream_decoder_finish( p_sys->p_flac );
- FLAC__stream_decoder_delete( p_sys->p_flac );
- free( p_sys );
-}
-
/*****************************************************************************
* DecoderReadCallback: called by libflac when it needs more data
*****************************************************************************/
DecoderReadCallback( const FLAC__StreamDecoder *decoder, FLAC__byte buffer[],
unsigned *bytes, void *client_data )
{
+ VLC_UNUSED(decoder);
decoder_t *p_dec = (decoder_t *)client_data;
decoder_sys_t *p_sys = p_dec->p_sys;
- msg_Err( p_dec, "buffer: %i", p_sys->p_block->i_buffer );
if( p_sys->p_block && p_sys->p_block->i_buffer )
{
*bytes = __MIN(*bytes, (unsigned)p_sys->p_block->i_buffer);
const FLAC__Frame *frame,
const FLAC__int32 *const buffer[], void *client_data )
{
+ VLC_UNUSED(decoder);
decoder_t *p_dec = (decoder_t *)client_data;
decoder_sys_t *p_sys = p_dec->p_sys;
- if( p_sys->p_block && p_sys->p_block->i_pts != 0 &&
- p_sys->p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
- {
- aout_DateSet( &p_sys->end_date, p_sys->p_block->i_pts );
- }
- else if( !aout_DateGet( &p_sys->end_date ) )
- {
- return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
- }
-
- if( p_sys->p_block ) p_sys->p_block->i_pts = 0;
-
p_sys->p_aout_buffer =
p_dec->pf_aout_buffer_new( p_dec, frame->header.blocksize );
frame->header.channels, frame->header.blocksize );
}
- /* Date management */
- p_sys->p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
+ /* Date management (already done by packetizer) */
+ p_sys->p_aout_buffer->start_date = p_sys->p_block->i_pts;
p_sys->p_aout_buffer->end_date =
- aout_DateIncrement( &p_sys->end_date, frame->header.blocksize );
+ p_sys->p_block->i_pts + p_sys->p_block->i_length;
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
const FLAC__StreamMetadata *metadata,
void *client_data )
{
+ VLC_UNUSED(decoder);
decoder_t *p_dec = (decoder_t *)client_data;
decoder_sys_t *p_sys = p_dec->p_sys;
- switch( metadata->data.stream_info.bits_per_sample )
+ if( p_dec->pf_decode_audio )
{
- case 8:
- p_dec->fmt_out.i_codec = VLC_FOURCC('s','8',' ',' ');
- break;
- case 16:
- p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
- break;
- default:
- msg_Dbg( p_dec, "strange bps %d",
- metadata->data.stream_info.bits_per_sample );
- p_dec->fmt_out.i_codec = VLC_FOURCC('f','i','3','2');
- break;
+ switch( metadata->data.stream_info.bits_per_sample )
+ {
+ case 8:
+ p_dec->fmt_out.i_codec = VLC_FOURCC('s','8',' ',' ');
+ break;
+ case 16:
+ p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
+ break;
+ default:
+ msg_Dbg( p_dec, "strange bit/sample value: %d",
+ metadata->data.stream_info.bits_per_sample );
+ p_dec->fmt_out.i_codec = VLC_FOURCC('f','i','3','2');
+ break;
+ }
}
/* Setup the format */
FLAC__StreamDecoderErrorStatus status,
void *client_data )
{
+ VLC_UNUSED(decoder);
decoder_t *p_dec = (decoder_t *)client_data;
switch( status )
{
case FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC:
- msg_Err( p_dec, "An error in the stream caused the decoder to "
- "loose synchronization." );
+ msg_Warn( p_dec, "an error in the stream caused the decoder to "
+ "lose synchronization." );
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER:
- msg_Err( p_dec, "The decoder encountered a corrupted frame header." );
+ msg_Err( p_dec, "the decoder encountered a corrupted frame header." );
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH:
- msg_Err( p_dec, "The frame's data did not match the CRC in the "
+ msg_Err( p_dec, "frame's data did not match the CRC in the "
"footer." );
break;
default:
msg_Err( p_dec, "got decoder error: %d", status );
}
+
+ FLAC__stream_decoder_flush( p_dec->p_sys->p_flac );
return;
}
switch ( state )
{
case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
- msg_Err( p_dec, "The decoder is ready to search for metadata." );
+ msg_Dbg( p_dec, "the decoder is ready to search for metadata." );
break;
case FLAC__STREAM_DECODER_READ_METADATA:
- msg_Err( p_dec, "The decoder is ready to or is in the process of "
+ msg_Dbg( p_dec, "the decoder is ready to or is in the process of "
"reading metadata." );
break;
case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
- msg_Err( p_dec, "The decoder is ready to or is in the process of "
+ msg_Dbg( p_dec, "the decoder is ready to or is in the process of "
"searching for the frame sync code." );
break;
case FLAC__STREAM_DECODER_READ_FRAME:
- msg_Err( p_dec, "The decoder is ready to or is in the process of "
+ msg_Dbg( p_dec, "the decoder is ready to or is in the process of "
"reading a frame." );
break;
case FLAC__STREAM_DECODER_END_OF_STREAM:
- msg_Err( p_dec, "The decoder has reached the end of the stream." );
+ msg_Dbg( p_dec, "the decoder has reached the end of the stream." );
+ break;
+#ifdef USE_NEW_FLAC_API
+ case FLAC__STREAM_DECODER_OGG_ERROR:
+ msg_Err( p_dec, "error occurred in the Ogg layer." );
break;
+ case FLAC__STREAM_DECODER_SEEK_ERROR:
+ msg_Err( p_dec, "error occurred while seeking." );
+ break;
+#endif
case FLAC__STREAM_DECODER_ABORTED:
- msg_Err( p_dec, "The decoder was aborted by the read callback." );
+ msg_Warn( p_dec, "the decoder was aborted by the read callback." );
break;
+#ifndef USE_NEW_FLAC_API
case FLAC__STREAM_DECODER_UNPARSEABLE_STREAM:
- msg_Err( p_dec, "The decoder encountered reserved fields in use "
+ msg_Warn( p_dec, "the decoder encountered reserved fields in use "
"in the stream." );
- FLAC__stream_decoder_flush( p_dec->p_sys->p_flac );
break;
+#endif
case FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
- msg_Err( p_dec, "An error occurred allocating memory." );
+ msg_Err( p_dec, "error when allocating memory." );
break;
+#ifndef USE_NEW_FLAC_API
case FLAC__STREAM_DECODER_ALREADY_INITIALIZED:
msg_Err( p_dec, "FLAC__stream_decoder_init() was called when the "
"decoder was already initialized, usually because "
msg_Err( p_dec, "FLAC__stream_decoder_init() was called without "
"all callbacks being set." );
break;
+#endif
case FLAC__STREAM_DECODER_UNINITIALIZED:
- msg_Err( p_dec, "The decoder is in the uninitialized state." );
+ msg_Err( p_dec, "decoder in uninitialized state." );
break;
default:
- msg_Err(p_dec, "unknown error" );
+ msg_Warn(p_dec, "unknown error" );
}
}
+#endif
/*****************************************************************************
* SyncInfo: parse FLAC sync info
*****************************************************************************/
static int SyncInfo( decoder_t *p_dec, uint8_t *p_buf,
- int * pi_channels, int * pi_channels_conf,
- int * pi_sample_rate, int * pi_bits_per_sample )
+ unsigned int * pi_channels,
+ unsigned int * pi_channels_conf,
+ unsigned int * pi_sample_rate,
+ int * pi_bits_per_sample )
{
decoder_sys_t *p_sys = p_dec->p_sys;
int i_header, i_temp, i_read;
i_temp = (unsigned)(p_buf[3] >> 4);
if( i_temp & 8 )
{
+#ifdef USE_LIBFLAC
int i_channel_assignment; /* ??? */
- *pi_channels = 2;
switch( i_temp & 7 )
{
case 0:
return 0;
break;
}
+#endif
+
+ *pi_channels = 2;
}
else
{
return crc;
}
+
+#ifdef USE_LIBFLAC
+/*****************************************************************************
+ * encoder_sys_t : flac encoder descriptor
+ *****************************************************************************/
+struct encoder_sys_t
+{
+ /*
+ * Input properties
+ */
+ int i_headers;
+
+ int i_samples_delay;
+ int i_channels;
+
+ FLAC__int32 *p_buffer;
+ unsigned int i_buffer;
+
+ block_t *p_chain;
+
+ /*
+ * FLAC properties
+ */
+ FLAC__StreamEncoder *p_flac;
+ FLAC__StreamMetadata_StreamInfo stream_info;
+
+ /*
+ * Common properties
+ */
+ mtime_t i_pts;
+};
+
+#define STREAMINFO_SIZE 38
+
+static block_t *Encode( encoder_t *, aout_buffer_t * );
+
+static FLAC__StreamEncoderWriteStatus
+EncoderWriteCallback( const FLAC__StreamEncoder *encoder,
+ const FLAC__byte buffer[],
+ unsigned bytes, unsigned samples,
+ unsigned current_frame, void *client_data );
+
+static void EncoderMetadataCallback( const FLAC__StreamEncoder *encoder,
+ const FLAC__StreamMetadata *metadata,
+ void *client_data );
+
+/*****************************************************************************
+ * OpenEncoder: probe the encoder and return score
+ *****************************************************************************/
+static int OpenEncoder( vlc_object_t *p_this )
+{
+ encoder_t *p_enc = (encoder_t *)p_this;
+ encoder_sys_t *p_sys;
+
+ if( p_enc->fmt_out.i_codec != VLC_FOURCC('f','l','a','c') &&
+ !p_enc->b_force )
+ {
+ return VLC_EGENERIC;
+ }
+
+ /* Allocate the memory needed to store the decoder's structure */
+ if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
+ {
+ msg_Err( p_enc, "out of memory" );
+ return VLC_EGENERIC;
+ }
+ p_enc->p_sys = p_sys;
+ p_enc->pf_encode_audio = Encode;
+ p_enc->fmt_out.i_codec = VLC_FOURCC('f','l','a','c');
+
+ p_sys->i_headers = 0;
+ p_sys->p_buffer = 0;
+ p_sys->i_buffer = 0;
+ p_sys->i_samples_delay = 0;
+
+ /* Create flac encoder */
+ if( !(p_sys->p_flac = FLAC__stream_encoder_new()) )
+ {
+ msg_Err( p_enc, "FLAC__stream_encoder_new() failed" );
+ free( p_sys );
+ return VLC_EGENERIC;
+ }
+
+ FLAC__stream_encoder_set_streamable_subset( p_sys->p_flac, 1 );
+ FLAC__stream_encoder_set_channels( p_sys->p_flac,
+ p_enc->fmt_in.audio.i_channels );
+ FLAC__stream_encoder_set_sample_rate( p_sys->p_flac,
+ p_enc->fmt_in.audio.i_rate );
+ FLAC__stream_encoder_set_bits_per_sample( p_sys->p_flac, 16 );
+ p_enc->fmt_in.i_codec = AOUT_FMT_S16_NE;
+
+ /* Get and store the STREAMINFO metadata block as a p_extra */
+ p_sys->p_chain = 0;
+
+#ifdef USE_NEW_FLAC_API
+ if( FLAC__stream_encoder_init_stream( p_sys->p_flac,
+ EncoderWriteCallback,
+ NULL,
+ NULL,
+ EncoderMetadataCallback,
+ p_enc )
+ != FLAC__STREAM_ENCODER_INIT_STATUS_OK )
+ {
+ msg_Err( p_enc, "FLAC__stream_encoder_init_stream() failed" );
+ FLAC__stream_encoder_delete( p_sys->p_flac );
+ free( p_sys );
+ return VLC_EGENERIC;
+ }
+#else
+ FLAC__stream_encoder_set_write_callback( p_sys->p_flac,
+ EncoderWriteCallback );
+ FLAC__stream_encoder_set_metadata_callback( p_sys->p_flac,
+ EncoderMetadataCallback );
+ FLAC__stream_encoder_set_client_data( p_sys->p_flac, p_enc );
+
+ FLAC__stream_encoder_init( p_sys->p_flac );
+#endif
+
+ return VLC_SUCCESS;
+}
+
+/****************************************************************************
+ * Encode: the whole thing
+ ****************************************************************************
+ * This function spits out ogg packets.
+ ****************************************************************************/
+static block_t *Encode( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
+{
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ block_t *p_chain;
+ unsigned int i;
+
+ p_sys->i_pts = p_aout_buf->start_date -
+ (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
+ (mtime_t)p_enc->fmt_in.audio.i_rate;
+
+ p_sys->i_samples_delay += p_aout_buf->i_nb_samples;
+
+ /* Convert samples to FLAC__int32 */
+ if( p_sys->i_buffer < p_aout_buf->i_nb_bytes * 2 )
+ {
+ p_sys->p_buffer =
+ realloc( p_sys->p_buffer, p_aout_buf->i_nb_bytes * 2 );
+ p_sys->i_buffer = p_aout_buf->i_nb_bytes * 2;
+ }
+
+ for( i = 0 ; i < p_aout_buf->i_nb_bytes / 2 ; i++ )
+ {
+ p_sys->p_buffer[i]= ((int16_t *)p_aout_buf->p_buffer)[i];
+ }
+
+ FLAC__stream_encoder_process_interleaved( p_sys->p_flac, p_sys->p_buffer,
+ p_aout_buf->i_nb_samples );
+
+ p_chain = p_sys->p_chain;
+ p_sys->p_chain = 0;
+
+ return p_chain;
+}
+
+/*****************************************************************************
+ * CloseEncoder: encoder destruction
+ *****************************************************************************/
+static void CloseEncoder( vlc_object_t *p_this )
+{
+ encoder_t *p_enc = (encoder_t *)p_this;
+ encoder_sys_t *p_sys = p_enc->p_sys;
+
+ FLAC__stream_encoder_delete( p_sys->p_flac );
+
+ if( p_sys->p_buffer ) free( p_sys->p_buffer );
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * EncoderMetadataCallback: called by libflac to output metadata
+ *****************************************************************************/
+static void EncoderMetadataCallback( const FLAC__StreamEncoder *encoder,
+ const FLAC__StreamMetadata *metadata,
+ void *client_data )
+{
+ VLC_UNUSED(encoder);
+ encoder_t *p_enc = (encoder_t *)client_data;
+
+ msg_Err( p_enc, "MetadataCallback: %i", metadata->type );
+ return;
+}
+
+/*****************************************************************************
+ * EncoderWriteCallback: called by libflac to output encoded samples
+ *****************************************************************************/
+static FLAC__StreamEncoderWriteStatus
+EncoderWriteCallback( const FLAC__StreamEncoder *encoder,
+ const FLAC__byte buffer[],
+ unsigned bytes, unsigned samples,
+ unsigned current_frame, void *client_data )
+{
+ VLC_UNUSED(encoder); VLC_UNUSED(current_frame);
+ encoder_t *p_enc = (encoder_t *)client_data;
+ encoder_sys_t *p_sys = p_enc->p_sys;
+ block_t *p_block;
+
+ if( samples == 0 )
+ {
+ if( p_sys->i_headers == 1 )
+ {
+ msg_Dbg( p_enc, "Writing STREAMINFO: %i", bytes );
+
+ /* Backup the STREAMINFO metadata block */
+ p_enc->fmt_out.i_extra = STREAMINFO_SIZE + 4;
+ p_enc->fmt_out.p_extra = malloc( STREAMINFO_SIZE + 4 );
+ memcpy( p_enc->fmt_out.p_extra, "fLaC", 4 );
+ memcpy( ((uint8_t *)p_enc->fmt_out.p_extra) + 4, buffer,
+ STREAMINFO_SIZE );
+
+ /* Fake this as the last metadata block */
+ ((uint8_t*)p_enc->fmt_out.p_extra)[4] |= 0x80;
+ }
+ p_sys->i_headers++;
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+ }
+
+ p_block = block_New( p_enc, bytes );
+ memcpy( p_block->p_buffer, buffer, bytes );
+
+ p_block->i_dts = p_block->i_pts = p_sys->i_pts;
+
+ p_sys->i_samples_delay -= samples;
+
+ p_block->i_length = (mtime_t)1000000 *
+ (mtime_t)samples / (mtime_t)p_enc->fmt_in.audio.i_rate;
+
+ /* Update pts */
+ p_sys->i_pts += p_block->i_length;
+
+ block_ChainAppend( &p_sys->p_chain, p_block );
+
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+}
+#endif
projects / vlc / blobdiff