/*

  * 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_FAST(cpu_flags)) {

             vol->scale_samples = ff_scale_samples_s32_avx;
             vol->samples_align = 8;
         }

     }
 }