faanidct.c File Reference

#include "faanidct.h"
#include "libavutil/common.h"

Go to the source code of this file.

Macros
#define	B0   1.0000000000000000000000
#define	B1   1.3870398453221474618216
#define	B2   1.3065629648763765278566
#define	B3   1.1758756024193587169745
#define	B4   1.0000000000000000000000
#define	B5   0.7856949583871021812779
#define	B6   0.5411961001461969843997
#define	B7   0.2758993792829430123360
#define	A4   0.70710678118654752438
#define	A2   0.92387953251128675613

Typedefs
typedef float	FLOAT

Functions
static void	p8idct (int16_t data[64], FLOAT temp[64], uint8_t *dest, ptrdiff_t stride, int x, int y, int type)
void	ff_faanidct (int16_t block[64])
void	ff_faanidct_add (uint8_t *dest, ptrdiff_t line_size, int16_t block[64])
void	ff_faanidct_put (uint8_t *dest, ptrdiff_t line_size, int16_t block[64])

Variables
static const FLOAT	prescale [64]

Macro Definition Documentation

B0

#define B0   1.0000000000000000000000

Definition at line 27 of file faanidct.c.

B1

#define B1   1.3870398453221474618216

Definition at line 28 of file faanidct.c.

B2

#define B2   1.3065629648763765278566

Definition at line 29 of file faanidct.c.

Referenced by p8idct().

B3

#define B3   1.1758756024193587169745

Definition at line 30 of file faanidct.c.

B4

#define B4   1.0000000000000000000000

Definition at line 31 of file faanidct.c.

B5

#define B5   0.7856949583871021812779

Definition at line 32 of file faanidct.c.

B6

#define B6   0.5411961001461969843997

Definition at line 33 of file faanidct.c.

Referenced by p8idct().

B7

#define B7   0.2758993792829430123360

Definition at line 34 of file faanidct.c.

A4

#define A4   0.70710678118654752438

Definition at line 36 of file faanidct.c.

Referenced by p8idct().

A2

#define A2   0.92387953251128675613

Definition at line 37 of file faanidct.c.

Referenced by p8idct().

Typedef Documentation

FLOAT

typedef float FLOAT

Definition at line 25 of file faanidct.c.

Function Documentation

p8idct()

static void p8idct ( int16_t  data[64], FLOAT  temp[64], uint8_t *  dest, ptrdiff_t  stride, int  x, int  y, int  type  )

inlinestatic

Definition at line 50 of file faanidct.c.

Referenced by ff_faanidct(), ff_faanidct_add(), and ff_faanidct_put().

ff_faanidct()

void ff_faanidct

(

int16_t

block[64]

)

Definition at line 127 of file faanidct.c.

Referenced by ff_idctdsp_init().

ff_faanidct_add()

void ff_faanidct_add	(	uint8_t *	dest,
		ptrdiff_t	line_size,
		int16_t	block[64]
	)

Definition at line 140 of file faanidct.c.

Referenced by ff_idctdsp_init().

ff_faanidct_put()

void ff_faanidct_put	(	uint8_t *	dest,
		ptrdiff_t	line_size,
		int16_t	block[64]
	)

Definition at line 154 of file faanidct.c.

Referenced by ff_idctdsp_init().

Variable Documentation

prescale

const FLOAT prescale[64]

static

Initial value:

={
B0*B0/8, B0*B1/8, B0*B2/8, B0*B3/8, B0*B4/8, B0*B5/8, B0*B6/8, B0*B7/8,
B1*B0/8, B1*B1/8, B1*B2/8, B1*B3/8, B1*B4/8, B1*B5/8, B1*B6/8, B1*B7/8,
B2*B0/8, B2*B1/8, B2*B2/8, B2*B3/8, B2*B4/8, B2*B5/8, B2*B6/8, B2*B7/8,
B3*B0/8, B3*B1/8, B3*B2/8, B3*B3/8, B3*B4/8, B3*B5/8, B3*B6/8, B3*B7/8,
B4*B0/8, B4*B1/8, B4*B2/8, B4*B3/8, B4*B4/8, B4*B5/8, B4*B6/8, B4*B7/8,
B5*B0/8, B5*B1/8, B5*B2/8, B5*B3/8, B5*B4/8, B5*B5/8, B5*B6/8, B5*B7/8,
B6*B0/8, B6*B1/8, B6*B2/8, B6*B3/8, B6*B4/8, B6*B5/8, B6*B6/8, B6*B7/8,
B7*B0/8, B7*B1/8, B7*B2/8, B7*B3/8, B7*B4/8, B7*B5/8, B7*B6/8, B7*B7/8,
}

Definition at line 39 of file faanidct.c.

Referenced by ff_faanidct(), ff_faanidct_add(), and ff_faanidct_put().