!7

import javax.sound.sampled.*;

static /*Target*/Line currentLine;

p-substance {
  final L<AudioLine> lines = allAudioLines();
  L<S> lineNames = allToString(lines);
  ButtonGroup buttons = showUnselectedRadioButtons("All Audio Lines", lineNames);
  JFrame frame = minFrameWidth(300, packFrame(buttons));
  final JLabel lblLevel = jcenteredBoldLabel("Level: ");
  addToWindowAndPack(frame, lblLevel);
  awtEvery(lblLevel, 100, r {
    S text = "Level: ";
    if (currentLine instanceof DataLine) try {
      text += ((DataLine) currentLine).getLevel();
    } catch e {
      text += str(e);
      printStackTrace(e);
    }
    lblLevel.setText(text);
  });
  onRadioButtonChange(buttons, voidfunc(int i) {
    if (i < 0) ret;
    AudioLine line = lines.get(i);
    currentLine = line.open();
    print("Line type: " + shortClassName(currentLine));
    Control[] controls = currentLine.getControls();
    print("Controls: " + l(controls));
    for ic over controls:
      print("Control " + (ic+1) + ": " + controls[ic]);
    if (currentLine instanceof DataLine)
      thread {
        print("Capturing");
        captureAudioFromLine((DataLine) currentLine, sphinxAudioFormat());
        print("Capture done");
      }
  });
}

Began life as a copy of #1007018