faanidct.c File Reference

#include "faanidct.h"
#include "libavutil/common.h"
#include "libavutil/emms.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 28 of file faanidct.c.

B1

#define B1   1.3870398453221474618216

Definition at line 29 of file faanidct.c.

B2

#define B2   1.3065629648763765278566

Definition at line 30 of file faanidct.c.

B3

#define B3   1.1758756024193587169745

Definition at line 31 of file faanidct.c.

B4

#define B4   1.0000000000000000000000

Definition at line 32 of file faanidct.c.

B5

#define B5   0.7856949583871021812779

Definition at line 33 of file faanidct.c.

B6

#define B6   0.5411961001461969843997

Definition at line 34 of file faanidct.c.

B7

#define B7   0.2758993792829430123360

Definition at line 35 of file faanidct.c.

A4

#define A4   0.70710678118654752438

Definition at line 37 of file faanidct.c.

A2

#define A2   0.92387953251128675613

Definition at line 38 of file faanidct.c.

Typedef Documentation

FLOAT

typedef float FLOAT

Definition at line 26 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 51 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 128 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 141 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 155 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 40 of file faanidct.c.

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