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/attributes.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/samplefmt.h"
23 #include "libavutil/x86/cpu.h"
24 #include "libavfilter/af_volume.h"
26 void ff_scale_samples_s16_sse2(uint8_t *dst
, const uint8_t *src
, int len
,
29 void ff_scale_samples_s32_sse2(uint8_t *dst
, const uint8_t *src
, int len
,
31 void ff_scale_samples_s32_ssse3_atom(uint8_t *dst
, const uint8_t *src
, int len
,
33 void ff_scale_samples_s32_avx(uint8_t *dst
, const uint8_t *src
, int len
,
36 av_cold
void ff_volume_init_x86(VolumeContext
*vol
)
38 int cpu_flags
= av_get_cpu_flags();
39 enum AVSampleFormat sample_fmt
= av_get_packed_sample_fmt(vol
->sample_fmt
);
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;
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;
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;
55 if (EXTERNAL_AVX(cpu_flags
)) {
56 vol
->scale_samples
= ff_scale_samples_s32_avx
;
57 vol
->samples_align
= 8;