flacdecoder.c 文件参考

#include <inttypes.h>
#include <stdbool.h>
#include "golomb.h"
#include "flacdecoder.h"

宏定义
#define	FFMAX(a, b)   ((a) > (b) ? (a) : (b))
#define	FFMIN(a, b)   ((a) > (b) ? (b) : (a))

函数
static int64_t	get_utf8 (GetBitContext *gb)
static int	get_crc8 (const uint8_t *buf, int count)
static int	decode_residuals (FLACContext *s, int32_t *decoded, int pred_order)
static int	decode_subframe_fixed (FLACContext *s, int32_t *decoded, int pred_order)
int	decode_subframe_lpc (FLACContext *s, int32_t *decoded, int pred_order)
static int	decode_subframe (FLACContext *s, int channel, int32_t *decoded)
static int	decode_frame (FLACContext *s)
int	flac_seek_frame (uint8_t *buf, uint32_t size, FLACContext *fc)
int	flac_decode_frame24 (FLACContext *fc, uint8_t *buf, int buf_size, int32_t *wavbuf)
int	flac_decode_frame16 (FLACContext *fc, uint8_t *buf, int buf_size, int16_t *wavbuf)

变量
static const int	sample_rate_table []
static const int	sample_size_table []
static const int	blocksize_table []
static const uint8_t	table_crc8 [256]

宏定义说明

FFMAX

#define FFMAX	(		a,
			b
	)		((a) > (b) ? (a) : (b))

FFMIN

#define FFMIN	(		a,
			b
	)		((a) > (b) ? (b) : (a))

函数说明

decode_frame()

static int decode_frame ( FLACContext *  s )

static

decode_residuals()

static int decode_residuals ( FLACContext *  s, int32_t *  decoded, int  pred_order  )

static

decode_subframe()

static int decode_subframe ( FLACContext *  s, int  channel, int32_t *  decoded  )

inlinestatic

decode_subframe_fixed()

static int decode_subframe_fixed ( FLACContext *  s, int32_t *  decoded, int  pred_order  )

static

decode_subframe_lpc()

int decode_subframe_lpc	(	FLACContext *	s,
		int32_t *	decoded,
		int	pred_order
	)

flac_decode_frame16()

int flac_decode_frame16	(	FLACContext *	fc,
		uint8_t *	buf,
		int	buf_size,
		int16_t *	wavbuf
	)

flac_decode_frame24()

int flac_decode_frame24	(	FLACContext *	fc,
		uint8_t *	buf,
		int	buf_size,
		int32_t *	wavbuf
	)

flac_seek_frame()

int flac_seek_frame	(	uint8_t *	buf,
		uint32_t	size,
		FLACContext *	fc
	)

get_crc8()

static int get_crc8 ( const uint8_t *  buf, int  count  )

static

get_utf8()

static int64_t get_utf8 ( GetBitContext *  gb )

static

变量说明

blocksize_table

const int blocksize_table[]

static

初始值:

= {
     0,    192, 576<<0, 576<<1, 576<<2, 576<<3,      0,      0, 
256<<0, 256<<1, 256<<2, 256<<3, 256<<4, 256<<5, 256<<6, 256<<7 
}

sample_rate_table

const int sample_rate_table[]

static

初始值:

=
{ 0, 88200, 176400, 192000,
  8000, 16000, 22050, 24000, 32000, 44100, 48000, 96000,
  0, 0, 0, 0 }

sample_size_table

const int sample_size_table[]

static

初始值:

= 
{ 0, 8, 12, 0, 16, 20, 24, 0 }

table_crc8

const uint8_t table_crc8[256]

static