kolibrios/contrib/media/updf/include/FLAC/stream_decoder.h
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2014-03-22 21:00:40 +00:00

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C

/* libFLAC - Free Lossless Audio Codec library
* Copyright (C) 2000,2001 Josh Coalson
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef FLAC__STREAM_DECODER_H
#define FLAC__STREAM_DECODER_H
#include "format.h"
typedef enum {
FLAC__STREAM_DECODER_SEARCH_FOR_METADATA = 0,
FLAC__STREAM_DECODER_READ_METADATA,
FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC,
FLAC__STREAM_DECODER_READ_FRAME,
FLAC__STREAM_DECODER_END_OF_STREAM,
FLAC__STREAM_DECODER_ABORTED,
FLAC__STREAM_DECODER_UNPARSEABLE_STREAM,
FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR,
FLAC__STREAM_DECODER_ALREADY_INITIALIZED,
FLAC__STREAM_DECODER_INVALID_CALLBACK,
FLAC__STREAM_DECODER_UNINITIALIZED
} FLAC__StreamDecoderState;
extern const char *FLAC__StreamDecoderStateString[];
typedef enum {
FLAC__STREAM_DECODER_READ_CONTINUE,
FLAC__STREAM_DECODER_READ_END_OF_STREAM,
FLAC__STREAM_DECODER_READ_ABORT
} FLAC__StreamDecoderReadStatus;
extern const char *FLAC__StreamDecoderReadStatusString[];
typedef enum {
FLAC__STREAM_DECODER_WRITE_CONTINUE,
FLAC__STREAM_DECODER_WRITE_ABORT
} FLAC__StreamDecoderWriteStatus;
extern const char *FLAC__StreamDecoderWriteStatusString[];
typedef enum {
FLAC__STREAM_DECODER_ERROR_LOST_SYNC,
FLAC__STREAM_DECODER_ERROR_BAD_HEADER,
FLAC__STREAM_DECODER_ERROR_FRAME_CRC_MISMATCH
} FLAC__StreamDecoderErrorStatus;
extern const char *FLAC__StreamDecoderErrorStatusString[];
/***********************************************************************
*
* class FLAC__StreamDecoder
*
***********************************************************************/
struct FLAC__StreamDecoderProtected;
struct FLAC__StreamDecoderPrivate;
typedef struct {
struct FLAC__StreamDecoderProtected *protected;
struct FLAC__StreamDecoderPrivate *private;
} FLAC__StreamDecoder;
/***********************************************************************
*
* Class constructor/destructor
*
***********************************************************************/
/*
* Any parameters that are not set before FLAC__stream_decoder_init()
* will take on the defaults from the constructor, shown below.
* For more on what the parameters mean, see the documentation.
*
* (*read_callback)() (DEFAULT: NULL ) The callbacks are the only values that MUST be set before FLAC__stream_decoder_init()
* (*write_callback)() (DEFAULT: NULL )
* (*metadata_callback)() (DEFAULT: NULL )
* (*error_callback)() (DEFAULT: NULL )
* void* client_data (DEFAULT: NULL ) passed back through the callbacks
*/
FLAC__StreamDecoder *FLAC__stream_decoder_new();
void FLAC__stream_decoder_delete(FLAC__StreamDecoder *);
/***********************************************************************
*
* Public class method prototypes
*
***********************************************************************/
/*
* Various "set" methods. These may only be called when the decoder
* is in the state FLAC__STREAM_DECODER_UNINITIALIZED, i.e. after
* FLAC__stream_decoder_new() or FLAC__stream_decoder_finish(), but
* before FLAC__stream_decoder_init(). If this is the case they will
* return true, otherwise false.
*
* NOTE that these functions do not validate the values as many are
* interdependent. The FLAC__stream_decoder_init() function will do
* this, so make sure to pay attention to the state returned by
* FLAC__stream_decoder_init().
*
* Any parameters that are not set before FLAC__stream_decoder_init()
* will take on the defaults from the constructor. NOTE that
* FLAC__stream_decoder_flush() or FLAC__stream_decoder_reset() do
* NOT reset the values to the constructor defaults.
*/
FLAC__bool FLAC__stream_decoder_set_read_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderReadStatus (*value)(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data));
FLAC__bool FLAC__stream_decoder_set_write_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderWriteStatus (*value)(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data));
FLAC__bool FLAC__stream_decoder_set_metadata_callback(const FLAC__StreamDecoder *decoder, void (*value)(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data));
FLAC__bool FLAC__stream_decoder_set_error_callback(const FLAC__StreamDecoder *decoder, void (*value)(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data));
FLAC__bool FLAC__stream_decoder_set_client_data(const FLAC__StreamDecoder *decoder, void *value);
/*
* Methods to return the current stream decoder state, number
* of channels, channel assignment, bits-per-sample, sample
* rate in Hz, and blocksize in samples. All but the decoder
* state will only be valid after decoding has started.
*/
FLAC__StreamDecoderState FLAC__stream_decoder_get_state(const FLAC__StreamDecoder *decoder);
unsigned FLAC__stream_decoder_get_channels(const FLAC__StreamDecoder *decoder);
FLAC__ChannelAssignment FLAC__stream_decoder_get_channel_assignment(const FLAC__StreamDecoder *decoder);
unsigned FLAC__stream_decoder_get_bits_per_sample(const FLAC__StreamDecoder *decoder);
unsigned FLAC__stream_decoder_get_sample_rate(const FLAC__StreamDecoder *decoder);
unsigned FLAC__stream_decoder_get_blocksize(const FLAC__StreamDecoder *decoder);
/*
* Initialize the instance; should be called after construction and
* 'set' calls but before any of the 'process' calls. Will set and
* return the decoder state, which will be
* FLAC__STREAM_DECODER_SEARCH_FOR_METADATA if initialization
* succeeded.
*/
FLAC__StreamDecoderState FLAC__stream_decoder_init(FLAC__StreamDecoder *decoder);
/*
* Flush the decoding buffer, release resources, and return the decoder
* state to FLAC__STREAM_DECODER_UNINITIALIZED.
*/
void FLAC__stream_decoder_finish(FLAC__StreamDecoder *decoder);
/*
* state control methods
*/
FLAC__bool FLAC__stream_decoder_flush(FLAC__StreamDecoder *decoder);
FLAC__bool FLAC__stream_decoder_reset(FLAC__StreamDecoder *decoder);
/*
* Methods for decoding the data
*/
FLAC__bool FLAC__stream_decoder_process_whole_stream(FLAC__StreamDecoder *decoder);
FLAC__bool FLAC__stream_decoder_process_metadata(FLAC__StreamDecoder *decoder);
FLAC__bool FLAC__stream_decoder_process_one_frame(FLAC__StreamDecoder *decoder);
FLAC__bool FLAC__stream_decoder_process_remaining_frames(FLAC__StreamDecoder *decoder);
#endif