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  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 <stdint.h>
  20.  
  21. #include "config.h"
  22. #include "libavutil/attributes.h"
  23. #include "libavutil/cpu.h"
  24. #include "libavutil/arm/cpu.h"
  25. #include "libavutil/samplefmt.h"
  26. #include "libavresample/audio_convert.h"
  27.  
  28. void ff_conv_flt_to_s16_neon(int16_t *dst, const float *src, int len);
  29. void ff_conv_fltp_to_s16_neon(int16_t *dst, float *const *src,
  30.                               int len, int channels);
  31. void ff_conv_fltp_to_s16_2ch_neon(int16_t *dst, float *const *src,
  32.                                   int len, int channels);
  33.  
  34. av_cold void ff_audio_convert_init_arm(AudioConvert *ac)
  35. {
  36.     int cpu_flags = av_get_cpu_flags();
  37.  
  38.     if (have_neon(cpu_flags)) {
  39.         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT,
  40.                                   0, 16, 8, "NEON",
  41.                                   ff_conv_flt_to_s16_neon);
  42.         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLTP,
  43.                                   0, 16, 8, "NEON",
  44.                                   ff_conv_fltp_to_s16_neon);
  45.         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLTP,
  46.                                   2, 16, 8, "NEON",
  47.                                   ff_conv_fltp_to_s16_2ch_neon);
  48.     }
  49. }
  50.