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  1. /*
  2.  * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #include "config.h"
  22.  
  23. #include "libavutil/cpu.h"
  24. #include "libavutil/arm/cpu.h"
  25. #include "libavutil/internal.h"
  26. #include "libavutil/samplefmt.h"
  27.  
  28. #include "libavresample/resample.h"
  29.  
  30. #include "asm-offsets.h"
  31.  
  32. AV_CHECK_OFFSET(struct ResampleContext, filter_bank,   FILTER_BANK);
  33. AV_CHECK_OFFSET(struct ResampleContext, filter_length, FILTER_LENGTH);
  34. AV_CHECK_OFFSET(struct ResampleContext, src_incr,      SRC_INCR);
  35. AV_CHECK_OFFSET(struct ResampleContext, phase_shift,   PHASE_SHIFT);
  36. AV_CHECK_OFFSET(struct ResampleContext, phase_mask,    PHASE_MASK);
  37.  
  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. void ff_resample_linear_flt_neon(struct ResampleContext *c, void *dst0,
  49.                                  int dst_index, const void *src0,
  50.                                  unsigned int index, int frac);
  51.  
  52. av_cold void ff_audio_resample_init_arm(ResampleContext *c,
  53.                                         enum AVSampleFormat sample_fmt)
  54. {
  55.     int cpu_flags = av_get_cpu_flags();
  56.     if (have_neon(cpu_flags)) {
  57.         switch (sample_fmt) {
  58.         case AV_SAMPLE_FMT_FLTP:
  59.             if (c->linear)
  60.                 c->resample_one = ff_resample_linear_flt_neon;
  61.             else
  62.                 c->resample_one = ff_resample_one_flt_neon;
  63.             break;
  64.         case AV_SAMPLE_FMT_S16P:
  65.             if (!c->linear)
  66.                 c->resample_one = ff_resample_one_s16_neon;
  67.             break;
  68.         case AV_SAMPLE_FMT_S32P:
  69.             if (!c->linear)
  70.                 c->resample_one = ff_resample_one_s32_neon;
  71.             break;
  72.         }
  73.     }
  74. }
  75.