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https://github.com/libretro/RetroArch
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71 lines
2.7 KiB
C
71 lines
2.7 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 "libchdr_zlib.h"
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#include "FLAC/ordinals.h"
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#include "FLAC/stream_decoder.h"
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/***************************************************************************
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* TYPE DEFINITIONS
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***************************************************************************
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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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/* codec-private data for the CDFL codec */
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typedef struct _cdfl_codec_data cdfl_codec_data;
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struct _cdfl_codec_data {
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/* internal state */
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int swap_endian;
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flac_decoder decoder;
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#ifdef WANT_SUBCODE
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zlib_codec_data subcode_decompressor;
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#endif
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uint8_t* buffer;
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};
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/* cdfl compression codec */
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chd_error cdfl_codec_init(void* codec, uint32_t hunkbytes);
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void cdfl_codec_free(void* codec);
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chd_error cdfl_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen);
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#endif /* __FLAC_H__ */
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