Bink DSP routines. More...

#include "dsputil.h"
#include "binkdsp.h"

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

#define	A2 2217

#define	A3 3784

#define	A4 -5352

#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)

void	ff_binkdsp_init (BinkDSPContext *c)

Detailed Description

Bink DSP routines.

Definition in file binkdsp.c.

Macro Definition Documentation

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

Definition at line 30 of file binkdsp.c.

Referenced by yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), and yuv2rgb_X_c_template().

#define A2 2217

Definition at line 31 of file binkdsp.c.

Referenced by yuv2rgb_1_c_template(), yuv2rgb_2_c_template(), and yuv2rgb_X_c_template().

#define A3 3784

Definition at line 32 of file binkdsp.c.

#define A4 -5352

Definition at line 33 of file binkdsp.c.

#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 = (A1*((src)[s2] - (src)[s6])) >> 11; \
    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 = (A3*(a5 + a7)) >> 11; \
    const int b2 = ((A4*a5) >> 11) - b0 + b1; \
    const int b3 = (A1*(a6 - a4) >> 11) - b2; \
    const int b4 = ((A2*a7) >> 11) + 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); \
}