ref: 9f9a8d2aaaf8237c5fb165a5bc145de5ef32230d
dir: /vpx_dsp/x86/variance_avx2.c/
/*
* Copyright (c) 2012 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.
*/
#include "./vpx_dsp_rtcd.h"
typedef void (*get_var_avx2)(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse, int *sum);
void vpx_get32x32var_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride, unsigned int *sse,
int *sum);
static void variance_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride, int w, int h,
unsigned int *sse, int *sum, get_var_avx2 var_fn,
int block_size) {
int i, j;
*sse = 0;
*sum = 0;
for (i = 0; i < h; i += 16) {
for (j = 0; j < w; j += block_size) {
unsigned int sse0;
int sum0;
var_fn(&src[src_stride * i + j], src_stride, &ref[ref_stride * i + j],
ref_stride, &sse0, &sum0);
*sse += sse0;
*sum += sum0;
}
}
}
unsigned int vpx_variance16x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 16, 16, sse, &sum,
vpx_get16x16var_avx2, 16);
return *sse - (((uint32_t)((int64_t)sum * sum)) >> 8);
}
unsigned int vpx_mse16x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
vpx_get16x16var_avx2(src, src_stride, ref, ref_stride, sse, &sum);
return *sse;
}
unsigned int vpx_variance32x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 32, 16, sse, &sum,
vpx_get32x32var_avx2, 32);
return *sse - (((int64_t)sum * sum) >> 9);
}
unsigned int vpx_variance32x32_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 32, 32, sse, &sum,
vpx_get32x32var_avx2, 32);
return *sse - (((int64_t)sum * sum) >> 10);
}
unsigned int vpx_variance64x64_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 64, 64, sse, &sum,
vpx_get32x32var_avx2, 32);
return *sse - (((int64_t)sum * sum) >> 12);
}
unsigned int vpx_variance64x32_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 64, 32, sse, &sum,
vpx_get32x32var_avx2, 32);
return *sse - (((int64_t)sum * sum) >> 11);
}
unsigned int vpx_sub_pixel_variance32xh_avx2(const uint8_t *src, int src_stride,
int x_offset, int y_offset,
const uint8_t *dst, int dst_stride,
int height, unsigned int *sse);
unsigned int vpx_sub_pixel_avg_variance32xh_avx2(
const uint8_t *src, int src_stride, int x_offset, int y_offset,
const uint8_t *dst, int dst_stride, const uint8_t *sec, int sec_stride,
int height, unsigned int *sseptr);
unsigned int vpx_sub_pixel_variance64x64_avx2(const uint8_t *src,
int src_stride, int x_offset,
int y_offset, const uint8_t *dst,
int dst_stride,
unsigned int *sse) {
unsigned int sse1;
const int se1 = vpx_sub_pixel_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, 64, &sse1);
unsigned int sse2;
const int se2 =
vpx_sub_pixel_variance32xh_avx2(src + 32, src_stride, x_offset, y_offset,
dst + 32, dst_stride, 64, &sse2);
const int se = se1 + se2;
*sse = sse1 + sse2;
return *sse - (((int64_t)se * se) >> 12);
}
unsigned int vpx_sub_pixel_variance32x32_avx2(const uint8_t *src,
int src_stride, int x_offset,
int y_offset, const uint8_t *dst,
int dst_stride,
unsigned int *sse) {
const int se = vpx_sub_pixel_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, 32, sse);
return *sse - (((int64_t)se * se) >> 10);
}
unsigned int vpx_sub_pixel_avg_variance64x64_avx2(
const uint8_t *src, int src_stride, int x_offset, int y_offset,
const uint8_t *dst, int dst_stride, unsigned int *sse, const uint8_t *sec) {
unsigned int sse1;
const int se1 = vpx_sub_pixel_avg_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, sec, 64, 64, &sse1);
unsigned int sse2;
const int se2 = vpx_sub_pixel_avg_variance32xh_avx2(
src + 32, src_stride, x_offset, y_offset, dst + 32, dst_stride, sec + 32,
64, 64, &sse2);
const int se = se1 + se2;
*sse = sse1 + sse2;
return *sse - (((int64_t)se * se) >> 12);
}
unsigned int vpx_sub_pixel_avg_variance32x32_avx2(
const uint8_t *src, int src_stride, int x_offset, int y_offset,
const uint8_t *dst, int dst_stride, unsigned int *sse, const uint8_t *sec) {
// Process 32 elements in parallel.
const int se = vpx_sub_pixel_avg_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, sec, 32, 32, sse);
return *sse - (((int64_t)se * se) >> 10);
}