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- /*
- * This file is part of FFmpeg.
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; 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(cpu_flags)) {
- vol->scale_samples = ff_scale_samples_s32_avx;
- vol->samples_align = 8;
- }
- }
- }
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