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/*
* Copyright (c) 2018, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
/* Sum the difference between every corresponding element of the buffers. */
#include "config/aom_config.h"
#include "config/aom_dsp_rtcd.h"
#include "aom/aom_integer.h"
int64_t aom_sse_c(const uint8_t *a, int a_stride, const uint8_t *b,
int b_stride, int width, int height) {
int y, x;
int64_t sse = 0;
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
const int32_t diff = abs(a[x] - b[x]);
sse += diff * diff;
}
a += a_stride;
b += b_stride;
}
return sse;
}
int64_t aom_highbd_sse_c(const uint8_t *a8, int a_stride, const uint8_t *b8,
int b_stride, int width, int height) {
int y, x;
int64_t sse = 0;
uint16_t *a = CONVERT_TO_SHORTPTR(a8);
uint16_t *b = CONVERT_TO_SHORTPTR(b8);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
const int32_t diff = (int32_t)(a[x]) - (int32_t)(b[x]);
sse += diff * diff;
}
a += a_stride;
b += b_stride;
}
return sse;
}
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