title: List input and output audio devices in Applet
body: <p>I am running a signed applet that needs to provide the ability for the user to select the input and output audio devices ( similar to what skype provides).</p>
  
  <p>I borrowed the following code from other <a href="https://stackoverflow.com/questions/562273/what-output-and-recording-ports-does-the-java-sound-api-find-on-your-computer">thread</a>:</p>
  
  <pre><code>import javax.sound.sampled.*;
  public class SoundAudit {
    public static void main(String[] args) { try {
      System.out.println("OS: "+System.getProperty("os.name")+" "+
        System.getProperty("os.version")+"/"+
        System.getProperty("os.arch")+"\nJava: "+
        System.getProperty("java.version")+" ("+
        System.getProperty("java.vendor")+")\n");
        for (Mixer.Info thisMixerInfo : AudioSystem.getMixerInfo()) {
          System.out.println("Mixer: "+thisMixerInfo.getDescription()+
            " ["+thisMixerInfo.getName()+"]");
          Mixer thisMixer = AudioSystem.getMixer(thisMixerInfo);
          for (Line.Info thisLineInfo:thisMixer.getSourceLineInfo()) {
              if (thisLineInfo.getLineClass().getName().equals(
                "javax.sound.sampled.Port")) {
                Line thisLine = thisMixer.getLine(thisLineInfo);
                thisLine.open();
                System.out.println("  Source Port: "
                  +thisLineInfo.toString());
                for (Control thisControl : thisLine.getControls()) {
                  System.out.println(AnalyzeControl(thisControl));}
                thisLine.close();}}
          for (Line.Info thisLineInfo:thisMixer.getTargetLineInfo()) {
            if (thisLineInfo.getLineClass().getName().equals(
              "javax.sound.sampled.Port")) {
              Line thisLine = thisMixer.getLine(thisLineInfo);
              thisLine.open();
              System.out.println("  Target Port: "
                +thisLineInfo.toString());
              for (Control thisControl : thisLine.getControls()) {
                System.out.println(AnalyzeControl(thisControl));}
              thisLine.close();}}}
    } catch (Exception e) {e.printStackTrace();}}
    public static String AnalyzeControl(Control thisControl) {
      String type = thisControl.getType().toString();
      if (thisControl instanceof BooleanControl) {
        return "    Control: "+type+" (boolean)"; }
      if (thisControl instanceof CompoundControl) {
        System.out.println("    Control: "+type+
          " (compound - values below)");
        String toReturn = "";
        for (Control children:
          ((CompoundControl)thisControl).getMemberControls()) {
          toReturn+="  "+AnalyzeControl(children)+"\n";}
        return toReturn.substring(0, toReturn.length()-1);}
      if (thisControl instanceof EnumControl) {
        return "    Control:"+type+" (enum: "+thisControl.toString()+")";}
      if (thisControl instanceof FloatControl) {
        return "    Control: "+type+" (float: from "+
          ((FloatControl) thisControl).getMinimum()+" to "+
          ((FloatControl) thisControl).getMaximum()+")";}
      return "    Control: unknown type";}
  }
  </code></pre>
  
  <p>But what I get: </p>
  
  <pre><code>Mixer: Software mixer and synthesizer [Java Sound Audio Engine]
  Mixer: No details available [Microphone (Pink Front)]
  </code></pre>
  
  <p>I was expecting the get the real list of my devices (My preferences panels shows 3 output devices and 1 Microphone). I am running on Mac OS X 10.6.7.</p>
  
  <p>Is there other way to get that info from Java?</p>