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