2 * Copyright (c) 2017 Paul B Mahol
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/attributes.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/cpu.h"
24 #include "libavfilter/hflip.h"
26 void ff_hflip_byte_ssse3(const uint8_t *src, uint8_t *dst, int w);
27 void ff_hflip_byte_avx2(const uint8_t *src, uint8_t *dst, int w);
28 void ff_hflip_short_ssse3(const uint8_t *src, uint8_t *dst, int w);
29 void ff_hflip_short_avx2(const uint8_t *src, uint8_t *dst, int w);
31 av_cold void ff_hflip_init_x86(FlipContext *s, int step[4], int nb_planes)
33 int cpu_flags = av_get_cpu_flags();
36 for (i = 0; i < nb_planes; i++) {
38 if (EXTERNAL_SSSE3(cpu_flags)) {
39 s->flip_line[i] = ff_hflip_byte_ssse3;
41 if (EXTERNAL_AVX2_FAST(cpu_flags)) {
42 s->flip_line[i] = ff_hflip_byte_avx2;
44 } else if (step[i] == 2) {
45 if (EXTERNAL_SSSE3(cpu_flags)) {
46 s->flip_line[i] = ff_hflip_short_ssse3;
48 if (EXTERNAL_AVX2_FAST(cpu_flags)) {
49 s->flip_line[i] = ff_hflip_short_avx2;