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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
flac.h
FLAC compression wrappers
***************************************************************************/
#pragma once
#ifndef __FLAC_H__
#define __FLAC_H__
#include <stdint.h>
#include "FLAC/all.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
typedef struct _flac_decoder flac_decoder;
struct _flac_decoder {
// output state
FLAC__StreamDecoder* decoder; // actual encoder
uint32_t sample_rate; // decoded sample rate
uint8_t channels; // decoded number of channels
uint8_t bits_per_sample; // decoded bits per sample
uint32_t compressed_offset; // current offset in compressed data
const FLAC__byte * compressed_start; // start of compressed data
uint32_t compressed_length; // length of compressed data
const FLAC__byte * compressed2_start; // start of compressed data
uint32_t compressed2_length; // length of compressed data
int16_t * uncompressed_start[8]; // pointer to start of uncompressed data (up to 8 streams)
uint32_t uncompressed_offset; // current position in uncompressed data
uint32_t uncompressed_length; // length of uncompressed data
int uncompressed_swap; // swap uncompressed sample data
uint8_t custom_header[0x2a]; // custom header
};
// ======================> flac_decoder
void flac_decoder_init(flac_decoder* decoder);
void flac_decoder_free(flac_decoder* decoder);
int flac_decoder_reset(flac_decoder* decoder, uint32_t sample_rate, uint8_t num_channels, uint32_t block_size, const void *buffer, uint32_t length);
int flac_decoder_decode_interleaved(flac_decoder* decoder, int16_t *samples, uint32_t num_samples, int swap_endian);
uint32_t flac_decoder_finish(flac_decoder* decoder);
#endif // __FLAC_H__
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