1 /* license:BSD-3-Clause 2 * copyright-holders:Aaron Giles 3 *************************************************************************** 4 5 flac.h 6 7 FLAC compression wrappers 8 9 ***************************************************************************/ 10 11 #pragma once 12 13 #ifndef __FLAC_H__ 14 #define __FLAC_H__ 15 16 #include <stdint.h> 17 #include <FLAC/all.h> 18 19 /*************************************************************************** 20 * TYPE DEFINITIONS 21 *************************************************************************** 22 */ 23 24 typedef struct _flac_decoder flac_decoder; 25 struct _flac_decoder { 26 /* output state */ 27 FLAC__StreamDecoder* decoder; /* actual encoder */ 28 uint32_t sample_rate; /* decoded sample rate */ 29 uint8_t channels; /* decoded number of channels */ 30 uint8_t bits_per_sample; /* decoded bits per sample */ 31 uint32_t compressed_offset; /* current offset in compressed data */ 32 const FLAC__byte * compressed_start; /* start of compressed data */ 33 uint32_t compressed_length; /* length of compressed data */ 34 const FLAC__byte * compressed2_start; /* start of compressed data */ 35 uint32_t compressed2_length; /* length of compressed data */ 36 int16_t * uncompressed_start[8]; /* pointer to start of uncompressed data (up to 8 streams) */ 37 uint32_t uncompressed_offset; /* current position in uncompressed data */ 38 uint32_t uncompressed_length; /* length of uncompressed data */ 39 int uncompressed_swap; /* swap uncompressed sample data */ 40 uint8_t custom_header[0x2a]; /* custom header */ 41 }; 42 43 /* ======================> flac_decoder */ 44 45 void flac_decoder_init(flac_decoder* decoder); 46 void flac_decoder_free(flac_decoder* decoder); 47 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); 48 int flac_decoder_decode_interleaved(flac_decoder* decoder, int16_t *samples, uint32_t num_samples, int swap_endian); 49 uint32_t flac_decoder_finish(flac_decoder* decoder); 50 51 #endif /* __FLAC_H__ */ 52