lpc_functions.h File Reference

#include "libavutil/avassert.h"

Go to the source code of this file.

Macros
#define	LPC_USE_FIXED   0
#define	LPC_SRA_R(x, y)   (x)
#define	LPC_MUL26(x, y)   ((x) * (y))
#define	LPC_FIXR(x)   ((float)(x))

Typedefs
typedef float	LPC_TYPE
typedef float	LPC_TYPE_U

Functions
static int	compute_lpc_coefs (const LPC_TYPE *autoc, int max_order, LPC_TYPE *lpc, int lpc_stride, int fail, int normalize)
	Levinson-Durbin recursion. More...

Macro Definition Documentation

LPC_USE_FIXED

#define LPC_USE_FIXED   0

Definition at line 28 of file lpc_functions.h.

LPC_SRA_R

#define LPC_SRA_R	(		x,
			y
	)		(x)

Definition at line 36 of file lpc_functions.h.

LPC_MUL26

#define LPC_MUL26	(		x,
			y
	)		((x) * (y))

Definition at line 37 of file lpc_functions.h.

LPC_FIXR

#define LPC_FIXR

(

x

)

((float)(x))

Definition at line 38 of file lpc_functions.h.

Typedef Documentation

LPC_TYPE

typedef float LPC_TYPE

Definition at line 45 of file lpc_functions.h.

LPC_TYPE_U

typedef float LPC_TYPE_U

Definition at line 46 of file lpc_functions.h.

Function Documentation

compute_lpc_coefs()

static int compute_lpc_coefs ( const LPC_TYPE *  autoc, int  max_order, LPC_TYPE *  lpc, int  lpc_stride, int  fail, int  normalize  )

inlinestatic

Levinson-Durbin recursion.

Produce LPC coefficients from autocorrelation data.

Definition at line 54 of file lpc_functions.h.

Referenced by apply_tns(), backward_filter(), ff_aac_apply_tns(), and ff_lpc_calc_coefs().