ref: 9265bad906be8d7674368f4432c6980774d74600
dir: /vpx_dsp/variance.h/
/*
* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef VPX_DSP_VARIANCE_H_
#define VPX_DSP_VARIANCE_H_
#include "./vpx_config.h"
#include "vpx/vpx_integer.h"
#ifdef __cplusplus
extern "C" {
#endif
#define FILTER_BITS 7
#define FILTER_WEIGHT 128
typedef unsigned int(*vpx_sad_fn_t)(const uint8_t *a, int a_stride,
const uint8_t *b_ptr, int b_stride);
typedef unsigned int(*vpx_sad_avg_fn_t)(const uint8_t *a_ptr, int a_stride,
const uint8_t *b_ptr, int b_stride,
const uint8_t *second_pred);
typedef void (*vp8_copy32xn_fn_t)(const uint8_t *a, int a_stride,
uint8_t *b, int b_stride, int n);
typedef void (*vpx_sad_multi_fn_t)(const uint8_t *a, int a_stride,
const uint8_t *b, int b_stride,
unsigned int *sad_array);
typedef void (*vpx_sad_multi_d_fn_t)(const uint8_t *a, int a_stride,
const uint8_t *const b_array[],
int b_stride,
unsigned int *sad_array);
typedef unsigned int (*vpx_variance_fn_t)(const uint8_t *a, int a_stride,
const uint8_t *b, int b_stride,
unsigned int *sse);
typedef unsigned int (*vpx_subpixvariance_fn_t)(const uint8_t *a, int a_stride,
int xoffset, int yoffset,
const uint8_t *b, int b_stride,
unsigned int *sse);
typedef unsigned int (*vpx_subp_avg_variance_fn_t)(const uint8_t *a_ptr,
int a_stride,
int xoffset, int yoffset,
const uint8_t *b_ptr,
int b_stride,
unsigned int *sse,
const uint8_t *second_pred);
#if CONFIG_VP8
typedef struct variance_vtable {
vpx_sad_fn_t sdf;
vpx_variance_fn_t vf;
vpx_subpixvariance_fn_t svf;
vpx_variance_fn_t svf_halfpix_h;
vpx_variance_fn_t svf_halfpix_v;
vpx_variance_fn_t svf_halfpix_hv;
vpx_sad_multi_fn_t sdx3f;
vpx_sad_multi_fn_t sdx8f;
vpx_sad_multi_d_fn_t sdx4df;
#if ARCH_X86 || ARCH_X86_64
vp8_copy32xn_fn_t copymem;
#endif
} vp8_variance_fn_ptr_t;
#endif // CONFIG_VP8
#if CONFIG_VP9
typedef struct vp9_variance_vtable {
vpx_sad_fn_t sdf;
vpx_sad_avg_fn_t sdaf;
vpx_variance_fn_t vf;
vpx_subpixvariance_fn_t svf;
vpx_subp_avg_variance_fn_t svaf;
vpx_sad_multi_fn_t sdx3f;
vpx_sad_multi_fn_t sdx8f;
vpx_sad_multi_d_fn_t sdx4df;
} vp9_variance_fn_ptr_t;
#endif // CONFIG_VP9
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_DSP_VARIANCE_H_