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!7

import static x30_pkg.x30_util.VF1;

module LiveVAD > DynPrintLog {
  volatile bool enabled = true;
  transient Q q;
  transient new L<short[]> buffer;
  transient int bufferSize, neededSamples;
  transient VAD_1 vad;
  
  visualize {
    ret centerAndSouthWithMargins(super.visualize(),
      jrightalignedline(dm_fieldCheckBox('enabled)));
  }

  start {
    vad = filled_VAD_1();
    neededSamples = iround(2.0*44100);
    
    q = dm_startQ();
    dm_addAudioListener(voidfunc(short[] data) {
      if (!enabled) ret;
      buffer.add(mixStereoShortArrayToMono(data));
      bufferSize += l(data)/2;
      
      if (bufferSize >= neededSamples) {
        bufferSize -= neededSamples;
        final L<short[]> salvaged = cloneList(buffer);
        buffer.clear();
        if (bufferSize > 0) {
          buffer.add(lastNShorts(bufferSize, last(salvaged)));
          replaceLastElement(salvaged, dropLastNShorts(bufferSize, last(salvaged)));
        }
        q.add(r {
          print("Got " + l(salvaged) + " chunks");
          
          MultiShortArrayInputStream_resettable stream = new(salvaged);
          stream.bigEndian = true;
          Clip clip = spectro_clipFromMonoInputStream(stream);
          print("Got clip!");
          BWImage img = clipToFrequencyImage(clip);
          showQuickImage(img);
          print("VAD: " + callF(vad, img));
        });
      }
    });
  }  
}