deps/libchdr/flac.h

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