cache.cpp

#if 0
  /* takes ~0.038ms */
  for (size_t k = 0; k < convert_from.nchannels; ++k) {
    std::vector<double>& prepared_data = channel_data[k];
    for (size_t i = 0; i < nframes; i++) {
      prepared_data[i] = src_ptr[k + (i * convert_from.nchannels)];
    }
  }
#else
  /* takes 0.0025 ms*/
  if (2 == resamplers.size()) {
    double* prepared_data = &channel_data[0][0];
    for (size_t i = 0; i < nframes; ++i) {
      prepared_data[i] = src_ptr[i * 2];
    }
    prepared_data = &channel_data[1][0];
    for (size_t i = 0; i < nframes; ++i) {
      prepared_data[i] = src_ptr[(i * 2) + 1];
    }
  }
  else {
  }
#endif