2 * This file is part of FFmpeg.
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.
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.
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
20 #include "libavutil/cpu.h"
21 #include "libavutil/samplefmt.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavfilter/af_volume.h"
25 void ff_scale_samples_s16_sse2(uint8_t *dst, const uint8_t *src, int len,
28 void ff_scale_samples_s32_sse2(uint8_t *dst, const uint8_t *src, int len,
30 void ff_scale_samples_s32_ssse3_atom(uint8_t *dst, const uint8_t *src, int len,
32 void ff_scale_samples_s32_avx(uint8_t *dst, const uint8_t *src, int len,
35 void ff_volume_init_x86(VolumeContext *vol)
37 int mm_flags = av_get_cpu_flags();
38 enum AVSampleFormat sample_fmt = av_get_packed_sample_fmt(vol->sample_fmt);
40 if (sample_fmt == AV_SAMPLE_FMT_S16) {
41 if (EXTERNAL_SSE2(mm_flags) && vol->volume_i < 32768) {
42 vol->scale_samples = ff_scale_samples_s16_sse2;
43 vol->samples_align = 8;
45 } else if (sample_fmt == AV_SAMPLE_FMT_S32) {
46 if (EXTERNAL_SSE2(mm_flags)) {
47 vol->scale_samples = ff_scale_samples_s32_sse2;
48 vol->samples_align = 4;
50 if (EXTERNAL_SSSE3(mm_flags) && mm_flags & AV_CPU_FLAG_ATOM) {
51 vol->scale_samples = ff_scale_samples_s32_ssse3_atom;
52 vol->samples_align = 4;
54 if (EXTERNAL_AVX(mm_flags)) {
55 vol->scale_samples = ff_scale_samples_s32_avx;
56 vol->samples_align = 8;