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#include "config.h"
20#include "libavutil/attributes.h"
21#include "libavutil/cpu.h"
22#include "libavutil/samplefmt.h"
23#include "libavutil/x86/cpu.h"
24#include "libavfilter/af_volume.h"
25
26void ff_scale_samples_s16_sse2(uint8_t *dst, const uint8_t *src, int len,
27                               int volume);
28
29void ff_scale_samples_s32_sse2(uint8_t *dst, const uint8_t *src, int len,
30                               int volume);
31void ff_scale_samples_s32_ssse3_atom(uint8_t *dst, const uint8_t *src, int len,
32                                     int volume);
33void ff_scale_samples_s32_avx(uint8_t *dst, const uint8_t *src, int len,
34                              int volume);
35
36av_cold void ff_volume_init_x86(VolumeContext *vol)
37{
38    int cpu_flags = av_get_cpu_flags();
39    enum AVSampleFormat sample_fmt = av_get_packed_sample_fmt(vol->sample_fmt);
40
41    if (sample_fmt == AV_SAMPLE_FMT_S16) {
42        if (EXTERNAL_SSE2(cpu_flags) && vol->volume_i < 32768) {
43            vol->scale_samples = ff_scale_samples_s16_sse2;
44            vol->samples_align = 8;
45        }
46    } else if (sample_fmt == AV_SAMPLE_FMT_S32) {
47        if (EXTERNAL_SSE2(cpu_flags)) {
48            vol->scale_samples = ff_scale_samples_s32_sse2;
49            vol->samples_align = 4;
50        }
51        if (EXTERNAL_SSSE3(cpu_flags) && cpu_flags & AV_CPU_FLAG_ATOM) {
52            vol->scale_samples = ff_scale_samples_s32_ssse3_atom;
53            vol->samples_align = 4;
54        }
55        if (EXTERNAL_AVX(cpu_flags)) {
56            vol->scale_samples = ff_scale_samples_s32_avx;
57            vol->samples_align = 8;
58        }
59    }
60}
61