binkdsp.c File Reference

#include "config.h"
#include "libavutil/attributes.h"
#include "binkdsp.h"

Go to the source code of this file.

Macros
#define	A1   2896 /* (1/sqrt(2))<<12 */
#define	A2   2217
#define	A3   3784
#define	A4   -5352
#define	MUL(X, Y)   ((int)((unsigned)(X) * (Y)) >> 11)
#define	IDCT_TRANSFORM(dest, s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7, munge, src)
#define	MUNGE_NONE(x)   (x)
#define	IDCT_COL(dest, src)   IDCT_TRANSFORM(dest,0,8,16,24,32,40,48,56,0,8,16,24,32,40,48,56,MUNGE_NONE,src)
#define	MUNGE_ROW(x)   (((x) + 0x7F)>>8)
#define	IDCT_ROW(dest, src)   IDCT_TRANSFORM(dest,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,MUNGE_ROW,src)

Functions
static void	bink_idct_col (int *dest, const int32_t *src)
static void	bink_idct_c (int32_t *block)
static void	bink_idct_add_c (uint8_t *dest, int linesize, int32_t *block)
static void	bink_idct_put_c (uint8_t *dest, int linesize, int32_t *block)
static void	scale_block_c (const uint8_t src[64], uint8_t *dst, int linesize)
static void	add_pixels8_c (uint8_t *av_restrict pixels, int16_t *block, int line_size)
av_cold void	ff_binkdsp_init (BinkDSPContext *c)

Detailed Description

Bink DSP routines

Definition in file binkdsp.c.

Macro Definition Documentation

A1

#define A1   2896 /* (1/sqrt(2))<<12 */

Definition at line 31 of file binkdsp.c.

A2

#define A2   2217

Definition at line 32 of file binkdsp.c.

A3

#define A3   3784

Definition at line 33 of file binkdsp.c.

A4

#define A4   -5352

Definition at line 34 of file binkdsp.c.

MUL

#define MUL	(		X,
			Y
	)		((int)((unsigned)(X) * (Y)) >> 11)

Definition at line 36 of file binkdsp.c.

IDCT_TRANSFORM

#define IDCT_TRANSFORM	(		dest,
			s0,
			s1,
			s2,
			s3,
			s4,
			s5,
			s6,
			s7,
			d0,
			d1,
			d2,
			d3,
			d4,
			d5,
			d6,
			d7,
			munge,
			src
	)

Value:

    {\
    const int a0 = (src)[s0] + (src)[s4]; \
    const int a1 = (src)[s0] - (src)[s4]; \
    const int a2 = (src)[s2] + (src)[s6]; \
    const int a3 = MUL(A1, (src)[s2] - (src)[s6]); \
    const int a4 = (src)[s5] + (src)[s3]; \
    const int a5 = (src)[s5] - (src)[s3]; \
    const int a6 = (src)[s1] + (src)[s7]; \
    const int a7 = (src)[s1] - (src)[s7]; \
    const int b0 = a4 + a6; \
    const int b1 = MUL(A3, a5 + a7); \
    const int b2 = MUL(A4, a5) - b0 + b1; \
    const int b3 = MUL(A1, a6 - a4) - b2; \
    const int b4 = MUL(A2, a7) + b3 - b1; \
    (dest)[d0] = munge(a0+a2   +b0); \
    (dest)[d1] = munge(a1+a3-a2+b2); \
    (dest)[d2] = munge(a1-a3+a2+b3); \
    (dest)[d3] = munge(a0-a2   -b4); \
    (dest)[d4] = munge(a0-a2   +b4); \
    (dest)[d5] = munge(a1-a3+a2-b3); \
    (dest)[d6] = munge(a1+a3-a2-b2); \
    (dest)[d7] = munge(a0+a2   -b0); \
}

Definition at line 38 of file binkdsp.c.

MUNGE_NONE

#define MUNGE_NONE

(

x

)

(x)

Definition at line 63 of file binkdsp.c.

IDCT_COL

#define IDCT_COL	(		dest,
			src
	)		IDCT_TRANSFORM(dest,0,8,16,24,32,40,48,56,0,8,16,24,32,40,48,56,MUNGE_NONE,src)

Definition at line 64 of file binkdsp.c.

MUNGE_ROW

#define MUNGE_ROW

(

x

)

(((x) + 0x7F)>>8)

Definition at line 66 of file binkdsp.c.

IDCT_ROW

#define IDCT_ROW	(		dest,
			src
	)		IDCT_TRANSFORM(dest,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,MUNGE_ROW,src)

Definition at line 67 of file binkdsp.c.

Function Documentation

bink_idct_col()

static void bink_idct_col ( int *  dest, const int32_t *  src  )

inlinestatic

Definition at line 69 of file binkdsp.c.

Referenced by bink_idct_c(), and bink_idct_put_c().

bink_idct_c()

static void bink_idct_c ( int32_t *  block )

static

Definition at line 85 of file binkdsp.c.

Referenced by bink_idct_add_c().

bink_idct_add_c()

static void bink_idct_add_c ( uint8_t *  dest, int  linesize, int32_t *  block  )

static

Definition at line 97 of file binkdsp.c.

Referenced by ff_binkdsp_init().

bink_idct_put_c()

static void bink_idct_put_c ( uint8_t *  dest, int  linesize, int32_t *  block  )

static

Definition at line 107 of file binkdsp.c.

Referenced by ff_binkdsp_init().

scale_block_c()

static void scale_block_c ( const uint8_t  src[64], uint8_t *  dst, int  linesize  )

static

Definition at line 118 of file binkdsp.c.

Referenced by ff_binkdsp_init().

add_pixels8_c()

static void add_pixels8_c ( uint8_t *av_restrict  pixels, int16_t *  block, int  line_size  )

static

Definition at line 134 of file binkdsp.c.

Referenced by ff_binkdsp_init().

ff_binkdsp_init()

av_cold void ff_binkdsp_init

(

BinkDSPContext *

c

)

Definition at line 153 of file binkdsp.c.

Referenced by decode_init().