rv60dsp.c File Reference

#include "rv60dsp.h"
#include "libavutil/common.h"

Go to the source code of this file.

Macros
#define	IDCT4X4(src, src_stride, src_step, dst, dst_stride, dst_step)
#define	STORE(a, b)   a = b
#define	STORE(a, b)   a = av_clip_uint8(a + (b))
#define	IDCT8X8(src, src_stride, src_step, dst, dst_stride, dst_step)
#define	STORE(a, b)   a = b
#define	STORE(a, b)   a = av_clip_uint8(a + (b))
#define	IDCT16X16(src, src_stride, src_step, dst, dst_stride, dst_step)
#define	STORE(a, x)   a = av_clip_intp2(x, 15)
#define	STORE(a, x)   a = av_clip_uint8(a + (x))

Functions
void	ff_rv60_idct4x4_add (const int16_t *block, uint8_t *dst, int dst_stride)
void	ff_rv60_idct8x8_add (const int16_t *block, uint8_t *dst, int dst_stride)
void	ff_rv60_idct16x16_add (const int16_t *block, uint8_t *dst, int dst_stride)

Macro Definition Documentation

IDCT4X4

#define IDCT4X4	(		src,
			src_stride,
			src_step,
			dst,
			dst_stride,
			dst_step
	)

Value:

    for (int y = 0; y < 4; y++) { \
        int a = src[y*src_stride + 0*src_step]; \
        int b = src[y*src_stride + 1*src_step]; \
        int c = src[y*src_stride + 2*src_step]; \
        int d = src[y*src_stride + 3*src_step]; \
        int t0 = 13 * (a + c); \
        int t1 = 13 * (a - c); \
        int t2 = 7 * b - 17 * d; \
        int t3 = 7 * d + 17 * b; \
        STORE(dst[y*dst_stride + 0*dst_step], (t0 + t3 + 16) >> 5); \
        STORE(dst[y*dst_stride + 1*dst_step], (t1 + t2 + 16) >> 5); \
        STORE(dst[y*dst_stride + 2*dst_step], (t1 - t2 + 16) >> 5); \
        STORE(dst[y*dst_stride + 3*dst_step], (t0 - t3 + 16) >> 5); \
    }

STORE [1/6]

#define STORE	(		a,
			b
	)		a = b

STORE [2/6]

#define STORE	(		a,
			b
	)		a = av_clip_uint8(a + (b))

IDCT8X8

#define IDCT8X8	(		src,
			src_stride,
			src_step,
			dst,
			dst_stride,
			dst_step
	)

Value:

    for (int y = 0; y < 8; y++) { \
        int a = src[y*src_stride + 0*src_step]; \
        int b = src[y*src_stride + 1*src_step]; \
        int c = src[y*src_stride + 2*src_step]; \
        int d = src[y*src_stride + 3*src_step]; \
        int e = src[y*src_stride + 4*src_step]; \
        int f = src[y*src_stride + 5*src_step]; \
        int g = src[y*src_stride + 6*src_step]; \
        int h = src[y*src_stride + 7*src_step]; \
        int t0 = 37 * (a + e); \
        int t1 = 37 * (a - e); \
        int t2 = 48 * c + 20 * g; \
        int t3 = 20 * c - 48 * g; \
        int t4 = t0 + t2; \
        int t5 = t0 - t2; \
        int t6 = t1 + t3; \
        int t7 = t1 - t3;  \
        int t8 = 51 * b + 43 * d + 29 * f + 10 * h; \
        int t9 = 43 * b - 10 * d - 51 * f - 29 * h; \
        int ta = 29 * b - 51 * d + 10 * f + 43 * h; \
        int tb = 10 * b - 29 * d + 43 * f - 51 * h; \
        STORE(dst[y*dst_stride + 0*dst_step], (t4 + t8 + 64) >> 7); \
        STORE(dst[y*dst_stride + 1*dst_step], (t6 + t9 + 64) >> 7); \
        STORE(dst[y*dst_stride + 2*dst_step], (t7 + ta + 64) >> 7); \
        STORE(dst[y*dst_stride + 3*dst_step], (t5 + tb + 64) >> 7); \
        STORE(dst[y*dst_stride + 4*dst_step], (t5 - tb + 64) >> 7); \
        STORE(dst[y*dst_stride + 5*dst_step], (t7 - ta + 64) >> 7); \
        STORE(dst[y*dst_stride + 6*dst_step], (t6 - t9 + 64) >> 7); \
        STORE(dst[y*dst_stride + 7*dst_step], (t4 - t8 + 64) >> 7); \
    }

STORE [3/6]

#define STORE	(		a,
			b
	)		a = b

STORE [4/6]

#define STORE	(		a,
			b
	)		a = av_clip_uint8(a + (b))

IDCT16X16

#define IDCT16X16	(		src,
			src_stride,
			src_step,
			dst,
			dst_stride,
			dst_step
	)

STORE [5/6]

#define STORE	(		a,
			x
	)		a = av_clip_intp2(x, 15)

STORE [6/6]

#define STORE	(		a,
			x
	)		a = av_clip_uint8(a + (x))

Function Documentation

ff_rv60_idct4x4_add()

void ff_rv60_idct4x4_add	(	const int16_t *	block,
		uint8_t *	dst,
		int	dst_stride
	)

Definition at line 24 of file rv60dsp.c.

Referenced by decode_cu_r().

ff_rv60_idct8x8_add()

void ff_rv60_idct8x8_add	(	const int16_t *	block,
		uint8_t *	dst,
		int	dst_stride
	)

Definition at line 50 of file rv60dsp.c.

Referenced by decode_cu_r().

ff_rv60_idct16x16_add()

void ff_rv60_idct16x16_add	(	const int16_t *	block,
		uint8_t *	dst,
		int	dst_stride
	)

Definition at line 92 of file rv60dsp.c.

Referenced by decode_cu_r().