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Josh Coalson
2000-12-10 04:09:52 +00:00
commit bb7f6b99d0
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include/FLAC/stream_decoder.h Normal file
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/* libFLAC - Free Lossless Audio Coder library
* Copyright (C) 2000 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,
FLAC__STREAM_DECODER_READ_METADATA,
FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC,
FLAC__STREAM_DECODER_READ_FRAME,
FLAC__STREAM_DECODER_RESYNC_IN_HEADER,
FLAC__STREAM_DECODER_END_OF_STREAM,
FLAC__STREAM_DECODER_ABORTED,
FLAC__STREAM_DECODER_UNPARSEABLE_STREAM,
FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR,
FLAC__STREAM_DECODER_UNINITIALIZED
} FLAC__StreamDecoderState;
typedef enum {
FLAC__STREAM_DECODER_READ_CONTINUE,
FLAC__STREAM_DECODER_READ_END_OF_STREAM,
FLAC__STREAM_DECODER_READ_ABORT
} FLAC__StreamDecoderReadStatus;
typedef enum {
FLAC__STREAM_DECODER_WRITE_CONTINUE,
FLAC__STREAM_DECODER_WRITE_ABORT
} FLAC__StreamDecoderWriteStatus;
typedef enum {
FLAC__STREAM_DECODER_ERROR_LOST_SYNC
} FLAC__StreamDecoderErrorStatus;
struct FLAC__StreamDecoderPrivate;
typedef struct {
/* these fields are read-only and valid as of the last write_callback() */
unsigned channels;
FLAC__ChannelAssignment channel_assignment;
unsigned bits_per_sample;
unsigned sample_rate; /* in Hz */
unsigned blocksize; /* in samples (per channel) */
FLAC__StreamDecoderState state; /* must be FLAC__STREAM_DECODER_UNINITIALIZED when passed to FLAC__stream_decoder_init() */
struct FLAC__StreamDecoderPrivate *guts; /* must be 0 when passed to FLAC__stream_decoder_init() */
} FLAC__StreamDecoder;
FLAC__StreamDecoder *FLAC__stream_decoder_get_new_instance();
void FLAC__stream_decoder_free_instance(FLAC__StreamDecoder *decoder);
FLAC__StreamDecoderState FLAC__stream_decoder_init(
FLAC__StreamDecoder *decoder,
FLAC__StreamDecoderReadStatus (*read_callback)(const FLAC__StreamDecoder *decoder, byte buffer[], unsigned *bytes, void *client_data),
FLAC__StreamDecoderWriteStatus (*write_callback)(const FLAC__StreamDecoder *decoder, const FLAC__FrameHeader *header, const int32 *buffer[], void *client_data),
void (*metadata_callback)(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data),
void (*error_callback)(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data),
void *client_data
);
void FLAC__stream_decoder_finish(FLAC__StreamDecoder *decoder);
bool FLAC__stream_decoder_flush(FLAC__StreamDecoder *decoder);
bool FLAC__stream_decoder_reset(FLAC__StreamDecoder *decoder);
bool FLAC__stream_decoder_process_whole_stream(FLAC__StreamDecoder *decoder);
bool FLAC__stream_decoder_process_metadata(FLAC__StreamDecoder *decoder);
bool FLAC__stream_decoder_process_one_frame(FLAC__StreamDecoder *decoder);
bool FLAC__stream_decoder_process_remaining_frames(FLAC__StreamDecoder *decoder);
#endif