!7

import static x30_pkg.x30_util.VF1;

sclass AudioOutput > DynPrintLog {
  int bufSize = 40960;
  transient playAudioFromSampleMakingFunction_AudioLoop loop;
  transient L<VF1<double[]>> sources = new CopyOnWriteArrayList;
  
  void start {
    ownTimer(loop = playAudioFromSampleMakingFunction(bufSize, voidfunc(double[] pair) {
      makeSample(pair)
    }));
  }
  
  void makeSample(short[] pair) {
    int l = 0, r = 0;
    for (O source : sources) {
      callF(source, pair);
      l += pair[0];
      r += pair[1];
    }
    pair[0] = clipShort(l); pair[1] = clipShort(r);
  }
  
  //void addSource(O source) { sources.add(source); }
  //void removeSource(O source) { sources.remove(source); }
  void addSource(VF1<double[]> source) { sources.add(source); }
  void removeSource(VF1<double[]> source) { sources.remove(source); }
}