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