faandct.c File Reference

Floating point AAN DCT

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#include "faandct.h"
#include "libavutil/internal.h"
#include "libavutil/libm.h"

Include dependency graph for faandct.c:

Go to the source code of this file.

Macros
#define	FLOAT   float
#define	B0   1.00000000000000000000
#define	B1   0.72095982200694791383
#define	B2   0.76536686473017954350
#define	B3   0.85043009476725644878
#define	B4   1.00000000000000000000
#define	B5   1.27275858057283393842
#define	B6   1.84775906502257351242
#define	B7   3.62450978541155137218
#define	A1   0.70710678118654752438
#define	A2   0.54119610014619698435
#define	A5   0.38268343236508977170
#define	A4   1.30656296487637652774

Functions
static av_always_inline void	row_fdct (FLOAT temp[64], int16_t *data)
void	ff_faandct (int16_t *data)
void	ff_faandct248 (int16_t *data)

Variables
static const FLOAT	postscale [64]

Detailed Description

Floating point AAN DCT

Author

Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Definition in file faandct.c.

Macro Definition Documentation

#define A1   0.70710678118654752438

Definition at line 50 of file faandct.c.

Referenced by ff_faandct(), ff_faandct248(), and row_fdct().

#define A2   0.54119610014619698435

Definition at line 51 of file faandct.c.

Referenced by ff_faandct(), and row_fdct().

#define A4   1.30656296487637652774

Definition at line 53 of file faandct.c.

Referenced by ff_faandct(), and row_fdct().

#define A5   0.38268343236508977170

Definition at line 52 of file faandct.c.

Referenced by ff_faandct(), and row_fdct().

#define B0   1.00000000000000000000

Definition at line 40 of file faandct.c.

Referenced by altivec_uyvy_rgb32(), and ff_yuv2packedX_altivec().

#define B1   0.72095982200694791383

Definition at line 41 of file faandct.c.

Referenced by altivec_uyvy_rgb32(), and ff_yuv2packedX_altivec().

#define B2   0.76536686473017954350

Definition at line 42 of file faandct.c.

#define B3   0.85043009476725644878

Definition at line 43 of file faandct.c.

#define B4   1.00000000000000000000

Definition at line 44 of file faandct.c.

#define B5   1.27275858057283393842

Definition at line 45 of file faandct.c.

#define B6   1.84775906502257351242

Definition at line 46 of file faandct.c.

#define B7   3.62450978541155137218

Definition at line 47 of file faandct.c.

#define FLOAT   float

Definition at line 32 of file faandct.c.

Referenced by ff_faandct(), ff_faandct248(), and row_fdct().

Function Documentation

void ff_faandct

(

int16_t *

data

)

Definition at line 121 of file faandct.c.

Referenced by ff_convert_matrix(), and ff_dsputil_init().

void ff_faandct248

(

int16_t *

data

)

Definition at line 181 of file faandct.c.

Referenced by ff_dsputil_init().

static av_always_inline void row_fdct ( FLOAT  temp[64], int16_t *  data  )

static

Definition at line 66 of file faandct.c.

Referenced by ff_faandct(), and ff_faandct248().

Variable Documentation

const FLOAT postscale[64]

static

Initial value:

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

Definition at line 55 of file faandct.c.

Referenced by ff_faandct(), and ff_faandct248().