1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 /**
20 * @file
21 * Scene SAD functions
22 */
23
24 #include "scene_sad.h"
25
ff_scene_sad16_c(SCENE_SAD_PARAMS)26 void ff_scene_sad16_c(SCENE_SAD_PARAMS)
27 {
28 uint64_t sad = 0;
29 const uint16_t *src1w = (const uint16_t *)src1;
30 const uint16_t *src2w = (const uint16_t *)src2;
31 int x, y;
32
33 stride1 /= 2;
34 stride2 /= 2;
35
36 for (y = 0; y < height; y++) {
37 for (x = 0; x < width; x++)
38 sad += FFABS(src1w[x] - src2w[x]);
39 src1w += stride1;
40 src2w += stride2;
41 }
42 *sum = sad;
43 }
44
ff_scene_sad_c(SCENE_SAD_PARAMS)45 void ff_scene_sad_c(SCENE_SAD_PARAMS)
46 {
47 uint64_t sad = 0;
48 int x, y;
49
50 for (y = 0; y < height; y++) {
51 for (x = 0; x < width; x++)
52 sad += FFABS(src1[x] - src2[x]);
53 src1 += stride1;
54 src2 += stride2;
55 }
56 *sum = sad;
57 }
58
ff_scene_sad_get_fn(int depth)59 ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
60 {
61 ff_scene_sad_fn sad = NULL;
62 if (ARCH_X86)
63 sad = ff_scene_sad_get_fn_x86(depth);
64 if (!sad) {
65 if (depth == 8)
66 sad = ff_scene_sad_c;
67 if (depth == 16)
68 sad = ff_scene_sad16_c;
69 }
70 return sad;
71 }
72
73