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/*
* 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_config.h"
#include "vp9/encoder/vp9_variance.h"
#include "vp9/common/vp9_pragmas.h"
#include "vpx_ports/mem.h"
typedef void (*get_var_avx2) (
const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *SSE,
int *Sum
);
void vp9_get16x16var_avx2
(
const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *SSE,
int *Sum
);
void vp9_get32x32var_avx2
(
const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *SSE,
int *Sum
);
static void variance_avx2(const unsigned char *src_ptr, int source_stride,
const unsigned char *ref_ptr, int recon_stride,
int w, int h, unsigned int *sse, int *sum,
get_var_avx2 var_fn, int block_size) {
unsigned int sse0;
int sum0;
int i, j;
*sse = 0;
*sum = 0;
for (i = 0; i < h; i += 16) {
for (j = 0; j < w; j += block_size) {
// processing 16 rows horizontally each call
var_fn(src_ptr + source_stride * i + j, source_stride,
ref_ptr + recon_stride * i + j, recon_stride, &sse0, &sum0);
*sse += sse0;
*sum += sum0;
}
}
}
unsigned int vp9_variance16x16_avx2
(
const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int var;
int avg;
variance_avx2(src_ptr, source_stride, ref_ptr, recon_stride, 16, 16,
&var, &avg, vp9_get16x16var_avx2, 16);
*sse = var;
return (var - (((unsigned int)avg * avg) >> 8));
}
unsigned int vp9_mse16x16_avx2(
const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int sse0;
int sum0;
vp9_get16x16var_avx2(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
&sum0);
*sse = sse0;
return sse0;
}
unsigned int vp9_variance32x32_avx2(const uint8_t *src_ptr,
int source_stride,
const uint8_t *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int var;
int avg;
// processing 32 elements vertically in parallel
variance_avx2(src_ptr, source_stride, ref_ptr, recon_stride, 32, 32,
&var, &avg, vp9_get32x32var_avx2, 32);
*sse = var;
return (var - (((int64_t)avg * avg) >> 10));
}
unsigned int vp9_variance32x16_avx2(const uint8_t *src_ptr,
int source_stride,
const uint8_t *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int var;
int avg;
// processing 32 elements vertically in parallel
variance_avx2(src_ptr, source_stride, ref_ptr, recon_stride, 32, 16,
&var, &avg, vp9_get32x32var_avx2, 32);
*sse = var;
return (var - (((int64_t)avg * avg) >> 9));
}
unsigned int vp9_variance64x64_avx2(const uint8_t *src_ptr,
int source_stride,
const uint8_t *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int var;
int avg;
// processing 32 elements vertically in parallel
variance_avx2(src_ptr, source_stride, ref_ptr, recon_stride, 64, 64,
&var, &avg, vp9_get32x32var_avx2, 32);
*sse = var;
return (var - (((int64_t)avg * avg) >> 12));
}
unsigned int vp9_variance64x32_avx2(const uint8_t *src_ptr,
int source_stride,
const uint8_t *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int var;
int avg;
// processing 32 elements vertically in parallel
variance_avx2(src_ptr, source_stride, ref_ptr, recon_stride, 64, 32,
&var, &avg, vp9_get32x32var_avx2, 32);
*sse = var;
return (var - (((int64_t)avg * avg) >> 11));
}
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