// 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__