1 /*
2 * Copyright (c) 2018, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 /* Sum the difference between every corresponding element of the buffers. */
13
14 #include "config/aom_config.h"
15 #include "config/aom_dsp_rtcd.h"
16
17 #include "aom/aom_integer.h"
18
aom_sse_c(const uint8_t * a,int a_stride,const uint8_t * b,int b_stride,int width,int height)19 int64_t aom_sse_c(const uint8_t *a, int a_stride, const uint8_t *b,
20 int b_stride, int width, int height) {
21 int y, x;
22 int64_t sse = 0;
23
24 for (y = 0; y < height; y++) {
25 for (x = 0; x < width; x++) {
26 const int32_t diff = abs(a[x] - b[x]);
27 sse += diff * diff;
28 }
29
30 a += a_stride;
31 b += b_stride;
32 }
33 return sse;
34 }
35
aom_highbd_sse_c(const uint8_t * a8,int a_stride,const uint8_t * b8,int b_stride,int width,int height)36 int64_t aom_highbd_sse_c(const uint8_t *a8, int a_stride, const uint8_t *b8,
37 int b_stride, int width, int height) {
38 int y, x;
39 int64_t sse = 0;
40 uint16_t *a = CONVERT_TO_SHORTPTR(a8);
41 uint16_t *b = CONVERT_TO_SHORTPTR(b8);
42 for (y = 0; y < height; y++) {
43 for (x = 0; x < width; x++) {
44 const int32_t diff = (int32_t)(a[x]) - (int32_t)(b[x]);
45 sse += diff * diff;
46 }
47
48 a += a_stride;
49 b += b_stride;
50 }
51 return sse;
52 }
53