aboutsummaryrefslogtreecommitdiffstats
path: root/libavfilter/scene_sad.c
blob: caf911eb5d6799d11003543923884f2e52f87828 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
/*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * Scene SAD functions
 */

#include "scene_sad.h"

void ff_scene_sad16_c(SCENE_SAD_PARAMS)
{
    uint64_t sad = 0;
    const uint16_t *src1w = (const uint16_t *)src1;
    const uint16_t *src2w = (const uint16_t *)src2;
    int x, y;

    stride1 /= 2;
    stride2 /= 2;

    for (y = 0; y < height; y++) {
        for (x = 0; x < width; x++)
            sad += FFABS(src1w[x] - src2w[x]);
        src1w += stride1;
        src2w += stride2;
    }
    *sum = sad;
}

void ff_scene_sad_c(SCENE_SAD_PARAMS)
{
    uint64_t sad = 0;
    int x, y;

    for (y = 0; y < height; y++) {
        for (x = 0; x < width; x++)
            sad += FFABS(src1[x] - src2[x]);
        src1 += stride1;
        src2 += stride2;
    }
    *sum = sad;
}

ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
{
    ff_scene_sad_fn sad = NULL;
#if ARCH_X86
    sad = ff_scene_sad_get_fn_x86(depth);
#endif
    if (!sad) {
        if (depth == 8)
            sad = ff_scene_sad_c;
        if (depth == 16)
            sad = ff_scene_sad16_c;
    }
    return sad;
}