Function start

src/content/insertable-streams/audio-processing/js/main.js:71–97

()

};

async function start() {
  startButton.disabled = true;
  try {
    stream = await navigator.mediaDevices.getUserMedia(constraints);
    const audioTracks = stream.getAudioTracks();
    console.log('Using audio device: ' + audioTracks[0].label);

    processor = new MediaStreamTrackProcessor(audioTracks[0]);
    generator = new MediaStreamTrackGenerator('audio');
    const source = processor.readable;
    const sink = generator.writable;
    worker = new Worker('js/worker.js');
    worker.postMessage({source: source, sink: sink}, [source, sink]);

    processedStream = new MediaStream();
    processedStream.addTrack(generator);
    audio.srcObject = processedStream;
    stopButton.disabled = false;
    await audio.play();
  } catch (error) {
    const errorMessage =
          'navigator.MediaDevices.getUserMedia error: ' + error.message + ' ' +
          error.name;
    document.getElementById('errorMsg').innerText = errorMessage;
    console.log(errorMessage);
  }
}

async function stop() {
  stopButton.disabled = true;