void Delay::processBlock(const AudioSourceChannelInfo& bufferToFill)
{
  auto levelParam = parameters.at("level");
  auto lengthParam = parameters.at("length");

  if (!levelParam->getIsOn()) { return; }

  int numSamples = delayBuffer.getNumSamples();
  float delayLength = lengthParam->getVal() * (float) numSamples;

  int writePos = 0;

  for (int chan = 0; chan < bufferToFill.buffer->getNumChannels(); chan++)
  {
    auto channelData = bufferToFill.buffer->getWritePointer(chan);
    auto delayData = delayBuffer.getWritePointer(chan);

    writePos = delayPosition;

    for (int i = 0; i < bufferToFill.numSamples; i++)
    {
      float readPos = (float) writePos - delayLength;

      if (readPos < 0.0) { readPos += numSamples; }

      int baseIndex = (int) std::floor(readPos);
      float fraction = readPos - (float) baseIndex;

      auto in = channelData[i];

      // Linearly interpolate between two samples
      auto output = delayData[baseIndex] + ((delayData[baseIndex + 1] - delayData[baseIndex]) * fraction);
      channelData[i] += output;

      // Write output back into delay line
      delayData[writePos] = (in + output) * levelParam->getVal();

      writePos++;
      if (writePos >= numSamples)
      {
        writePos = 0;
      }
    }
  }
  delayPosition = writePos;
}