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; } } }