FFmpeg 5.1.4
pixelutils.h
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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#ifndef AVUTIL_PIXELUTILS_H
20#define AVUTIL_PIXELUTILS_H
21
22#include <stddef.h>
23#include <stdint.h>
24
25/**
26 * Sum of abs(src1[x] - src2[x])
27 */
28typedef int (*av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1,
29 const uint8_t *src2, ptrdiff_t stride2);
30
31/**
32 * Get a potentially optimized pointer to a Sum-of-absolute-differences
33 * function (see the av_pixelutils_sad_fn prototype).
34 *
35 * @param w_bits 1<<w_bits is the requested width of the block size
36 * @param h_bits 1<<h_bits is the requested height of the block size
37 * @param aligned If set to 2, the returned sad function will assume src1 and
38 * src2 addresses are aligned on the block size.
39 * If set to 1, the returned sad function will assume src1 is
40 * aligned on the block size.
41 * If set to 0, the returned sad function assume no particular
42 * alignment.
43 * @param log_ctx context used for logging, can be NULL
44 *
45 * @return a pointer to the SAD function or NULL in case of error (because of
46 * invalid parameters)
47 */
49 int aligned, void *log_ctx);
50
51#endif /* AVUTIL_PIXELUTILS_H */
int(* av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1, const uint8_t *src2, ptrdiff_t stride2)
Sum of abs(src1[x] - src2[x])
Definition: pixelutils.h:28
av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits, int aligned, void *log_ctx)
Get a potentially optimized pointer to a Sum-of-absolute-differences function (see the av_pixelutils_...