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