pixelutils.h File Reference

#include <stddef.h>
#include <stdint.h>
#include "common.h"

Go to the source code of this file.

Typedefs
typedef int(*	av_pixelutils_sad_fn )(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
	Sum of abs(src1[x] - src2[x])

Functions
av_pixelutils_sad_fn	av_pixelutils_get_sad_fn (int w_bits, int h_bits, int aligned, void *log_ctx)
	Get a potentially optimized pointer to a Sum-of-absolute-differences function (see the av_pixelutils_sad_fn prototype).

Typedef Documentation

typedef int(* av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)

Sum of abs(src1[x] - src2[x])

Definition at line 29 of file pixelutils.h.

Function Documentation

av_pixelutils_sad_fn av_pixelutils_get_sad_fn	(	int	w_bits,
		int	h_bits,
		int	aligned,
		void *	log_ctx
	)

Get a potentially optimized pointer to a Sum-of-absolute-differences function (see the av_pixelutils_sad_fn prototype).

Parameters

w_bits	1<<w_bits is the requested width of the block size
h_bits	1<<h_bits is the requested height of the block size
aligned	If set to 2, the returned sad function will assume src1 and src2 addresses are aligned on the block size. If set to 1, the returned sad function will assume src1 is aligned on the block size. If set to 0, the returned sad function assume no particular alignment.
log_ctx	context used for logging, can be NULL

Returns

a pointer to the SAD function or NULL in case of error (because of invalid parameters)

Definition at line 64 of file pixelutils.c.

Referenced by config_input(), and init().