sclass AudioLine {
  Mixer mixer;
  Line.Info lineInfo;
  
  *() {}
  *(Mixer *mixer, Line.Info *lineInfo) {}
  
  Line open() ctex {
    ret mixer.getLine(lineInfo);
  }
  
  static S renderMixerInfo(Mixer.Info info) {
    ret info.getName() + " / " + info.getVendor() + " / " + info.getDescription() + " / " + info.getVersion();
  }
  
  toString {
    ret shortClassName(mixer) + "/" + shortClassName(lineInfo.getLineClass()) + " " + renderMixerInfo(mixer.getMixerInfo()) + " :: " + lineInfo;
  }
  
  Class lineClass() { ret lineInfo.getLineClass(); }
}

static L<AudioLine> allAudioLines() {
  ret concatMap(listAudioDevices(), f allAudioLines);
}

static L<AudioLine> allAudioLines(Mixer m) {
  new L<AudioLine> l;
  for (Line.Info lineInfo : concatLists(
    asList(m.getTargetLineInfo()),
    asList(m.getSourceLineInfo())))
    l.add(new AudioLine(m, lineInfo));
  ret l;
}