func: static struct ResampleContext *create(struct ResampleContext *c, int out_rate, int in_rate, int filter_size, int phase_shift, int linear,
  
          double cutoff, enum AVSampleFormat format, enum SwrFilterType filter_type, double kaiser_beta, double precision, int cheby, int exact_rational){
  
      soxr_error_t error;
  
  
  
      soxr_datatype_t type =
  
          format == AV_SAMPLE_FMT_S16P? SOXR_INT16_S :
  
          format == AV_SAMPLE_FMT_S16 ? SOXR_INT16_I :
  
          format == AV_SAMPLE_FMT_S32P? SOXR_INT32_S :
  
          format == AV_SAMPLE_FMT_S32 ? SOXR_INT32_I :
  
          format == AV_SAMPLE_FMT_FLTP? SOXR_FLOAT32_S :
  
          format == AV_SAMPLE_FMT_FLT ? SOXR_FLOAT32_I :
  
          format == AV_SAMPLE_FMT_DBLP? SOXR_FLOAT64_S :
  
          format == AV_SAMPLE_FMT_DBL ? SOXR_FLOAT64_I : (soxr_datatype_t)-1;
  
  
  
      soxr_io_spec_t io_spec = soxr_io_spec(type, type);
  
  
  
      soxr_quality_spec_t q_spec = soxr_quality_spec((int)((precision-2)/4), (SOXR_HI_PREC_CLOCK|SOXR_ROLLOFF_NONE)*!!cheby);
  
      q_spec.precision = linear? 0 : precision;
  
  #if !defined SOXR_VERSION /* Deprecated @ March 2013: */
  
      q_spec.bw_pc = cutoff? FFMAX(FFMIN(cutoff,.995),.8)*100 : q_spec.bw_pc;
  
  #else
  
      q_spec.passband_end = cutoff? FFMAX(FFMIN(cutoff,.995),.8) : q_spec.passband_end;
  
  #endif
  
  
  
      soxr_delete((soxr_t)c);
  
      c = (struct ResampleContext *)
  
          soxr_create(in_rate, out_rate, 0, &error, &io_spec, &q_spec, 0);
  
      if (!c)
  
          av_log(NULL, AV_LOG_ERROR, "soxr_create: %s\n", error);
  
      return c;
  
  }
  