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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/cpu.h"
  23. #include "libavutil/aarch64/cpu.h"
  24. #include "libavutil/internal.h"
  25. #include "libavutil/samplefmt.h"
  26. #include "libavresample/resample.h"
  27.  
  28. #include "asm-offsets.h"
  29.  
  30. AV_CHECK_OFFSET(struct ResampleContext, filter_bank,   FILTER_BANK);
  31. AV_CHECK_OFFSET(struct ResampleContext, filter_length, FILTER_LENGTH);
  32. AV_CHECK_OFFSET(struct ResampleContext, phase_shift,   PHASE_SHIFT);
  33. AV_CHECK_OFFSET(struct ResampleContext, phase_mask,    PHASE_MASK);
  34.  
  35. void ff_resample_one_dbl_neon(struct ResampleContext *c, void *dst0,
  36.                               int dst_index, const void *src0,
  37.                               unsigned int index, int frac);
  38. void ff_resample_one_flt_neon(struct ResampleContext *c, void *dst0,
  39.                               int dst_index, const void *src0,
  40.                               unsigned int index, int frac);
  41. void ff_resample_one_s16_neon(struct ResampleContext *c, void *dst0,
  42.                               int dst_index, const void *src0,
  43.                               unsigned int index, int frac);
  44. void ff_resample_one_s32_neon(struct ResampleContext *c, void *dst0,
  45.                               int dst_index, const void *src0,
  46.                               unsigned int index, int frac);
  47.  
  48. av_cold void ff_audio_resample_init_aarch64(ResampleContext *c,
  49.                                             enum AVSampleFormat sample_fmt)
  50. {
  51.     int cpu_flags = av_get_cpu_flags();
  52.  
  53.     if (have_neon(cpu_flags)) {
  54.         if (!c->linear) {
  55.             switch (sample_fmt) {
  56.             case AV_SAMPLE_FMT_DBLP:
  57.                 c->resample_one  = ff_resample_one_dbl_neon;
  58.                 break;
  59.             case AV_SAMPLE_FMT_FLTP:
  60.                 c->resample_one  = ff_resample_one_flt_neon;
  61.                 break;
  62.             case AV_SAMPLE_FMT_S16P:
  63.                 c->resample_one  = ff_resample_one_s16_neon;
  64.                 break;
  65.             case AV_SAMPLE_FMT_S32P:
  66.                 c->resample_one  = ff_resample_one_s32_neon;
  67.                 break;
  68.             }
  69.         }
  70.     }
  71. }
  72.