Method loadAudioFile

Source/DSP/GranularSynth.cpp:538–567

}

Utils::Result GranularSynth::loadAudioFile(juce::File file) {
  juce::AudioFormatReader* formatReader = mFormatManager.createReaderFor(file);
  if (formatReader == nullptr) return {false, "Opening failed: unsupported file format"};

  juce::AudioBuffer<float> fileAudioBuffer;
  const int length = static_cast<int>(formatReader->lengthInSamples);
  fileAudioBuffer.setSize(1, length);
  formatReader->read(&fileAudioBuffer, 0, length, 0, true, false);

  // .mp3 files, unlike .wav files, can contain PCM values greater than abs(1.0) (aka, clipping) which will produce awful
  // sounding grains, so normalize the gain of any mp3 file clipping before using anywhere
  if (file.getFileExtension() == ".mp3") {
    float absMax = 0.0f;
    for (int i = 0; i < fileAudioBuffer.getNumChannels(); i++) {
      juce::Range<float> range =
          juce::FloatVectorOperations::findMinAndMax(fileAudioBuffer.getReadPointer(i), fileAudioBuffer.getNumSamples());
      absMax = juce::jmax(absMax, std::abs(range.getStart()), std::abs(range.getEnd()));
    }
    if (absMax > 1.0) {
      fileAudioBuffer.applyGain(1.0f / absMax);
    }
  }

  Utils::resampleAudioBuffer(fileAudioBuffer, mInputBuffer, formatReader->sampleRate, mSampleRate);
  
  // should not need the file anymore as we want to work with the resampled input buffer across the rest of the plugin
  delete (formatReader);

  return {true, ""};
}

Utils::Result GranularSynth::loadPreset(juce::File file) {
  juce::FileInputStream input(file);