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!7

cmodule AudioInput > DynPrintLog {
  switchable float sampleRate = 16000;
  switchable int channels = 1;
  int bufSize = 40960;
  transient recordToAudioListeners_AudioLoop loop;
  transient SimpleLiveValue<Float> lvVolume = floatLiveValue(); // in percent
  transient L<VF1<short[]>> audioListeners = synchroList();
  
  visualize {
    ret centerAndSouthWithMargins(super.visualize(),
      jCenteredLine(jLiveValueLabel(mapLiveValue(func(float volume) -> S { "Volume: " + iround(volume) + " %" }, S, lvVolume))));
  }

  start {
    ownTimer(loop = recordToAudioListeners(audioListeners, bufSize, lvVolume, getAudioFormat()));
    loop.start();
    JComponent trayIcon = jMinWidth(16, jVerticalGreenBar(lvVolume, max := 100));
    componentPopupMenuItem(trayIcon, "Audio Input", r { dm_showModule(module()) });
    dm_setTrayIcon(trayIcon);
  }
  
  // hold audio listeners during reload
  
  O _getReloadData() { ret audioListeners; }
  void _setReloadData(L<VF1<short[]>> listeners) { addAll(audioListeners, listeners); }

  // API
  
  void addAudioListener(VF1<short[]> l) { audioListeners.add(l); }
  void removeAudioListener(VF1<short[]> l) { audioListeners.remove(l); }
  
  AudioFormat getAudioFormat() { ret new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, sampleRate, 16, channels, channels*2, sampleRate, false); }
  
  float getVolume() { ret lvVolume!; }
}