text: /*
   * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
   *
   * 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 "libavcodec/fft.h"
  #include "libavcodec/rdft.h"
  #include "libavcodec/synth_filter.h"
  
  void ff_fft_permute_neon(FFTContext *s, FFTComplex *z);
  void ff_fft_calc_neon(FFTContext *s, FFTComplex *z);
  
  void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
  void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
  void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
  
  void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z);
  
  void ff_synth_filter_float_neon(FFTContext *imdct,
                                  float *synth_buf_ptr, int *synth_buf_offset,
                                  float synth_buf2[32], const float window[512],
                                  float out[32], const float in[32],
                                  float scale);
  
  av_cold void ff_fft_init_arm(FFTContext *s)
  {
      if (HAVE_NEON) {
          s->fft_permute  = ff_fft_permute_neon;
          s->fft_calc     = ff_fft_calc_neon;
  #if CONFIG_MDCT
          s->imdct_calc   = ff_imdct_calc_neon;
          s->imdct_half   = ff_imdct_half_neon;
          s->mdct_calc    = ff_mdct_calc_neon;
          s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
  #endif
      }
  }
  
  #if CONFIG_RDFT
  av_cold void ff_rdft_init_arm(RDFTContext *s)
  {
      if (HAVE_NEON)
          s->rdft_calc    = ff_rdft_calc_neon;
  }
  #endif
  
  #if CONFIG_DCA_DECODER
  av_cold void ff_synth_filter_init_arm(SynthFilterContext *s)
  {
      if (HAVE_NEON)
          s->synth_filter_float = ff_synth_filter_float_neon;
  }
  #endif
  