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/*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/samplefmt.h"
#include "libavutil/x86/cpu.h"
#include "libavfilter/af_volume.h"
void ff_scale_samples_s16_sse2(uint8_t *dst, const uint8_t *src, int len,
int volume);
void ff_scale_samples_s32_sse2(uint8_t *dst, const uint8_t *src, int len,
int volume);
void ff_scale_samples_s32_ssse3_atom(uint8_t *dst, const uint8_t *src, int len,
int volume);
void ff_scale_samples_s32_avx(uint8_t *dst, const uint8_t *src, int len,
int volume);
av_cold void ff_volume_init_x86(VolumeContext *vol)
{
int cpu_flags = av_get_cpu_flags();
enum AVSampleFormat sample_fmt = av_get_packed_sample_fmt(vol->sample_fmt);
if (sample_fmt == AV_SAMPLE_FMT_S16) {
if (EXTERNAL_SSE2(cpu_flags) && vol->volume_i < 32768) {
vol->scale_samples = ff_scale_samples_s16_sse2;
vol->samples_align = 8;
}
} else if (sample_fmt == AV_SAMPLE_FMT_S32) {
if (EXTERNAL_SSE2(cpu_flags)) {
vol->scale_samples = ff_scale_samples_s32_sse2;
vol->samples_align = 4;
}
if (EXTERNAL_SSSE3(cpu_flags) && cpu_flags & AV_CPU_FLAG_ATOM) {
vol->scale_samples = ff_scale_samples_s32_ssse3_atom;
vol->samples_align = 4;
}
if (EXTERNAL_AVX_FAST(cpu_flags)) {
vol->scale_samples = ff_scale_samples_s32_avx;
vol->samples_align = 8;
}
}
}
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