private void createMixerChildren(JavaMixer.MixerNode mixerNode) {
Mixer mixer = mixerNode.getMixer();
Line.Info[] infosToCheck = getPortInfo(mixer);
for (Line.Info anInfosToCheck : infosToCheck) {
if (mixer.isLineSupported(anInfosToCheck)) {
Port port = null;
DataLine dLine = null;
int maxLines = mixer.getMaxLines(anInfosToCheck);
// Workaround to prevent a JVM crash on Mac OS X (Intel) 1.5.0_07 JVM
if (maxLines > 0) {
try {
if (anInfosToCheck instanceof Port.Info) {
port = (Port) mixer.getLine(anInfosToCheck);
port.open();
} else if (anInfosToCheck instanceof DataLine.Info) {
dLine = (DataLine) mixer.getLine(anInfosToCheck);
if (!dLine.isOpen()) {
dLine.open();
}
}
} catch (LineUnavailableException e) {
e.printStackTrace();
} catch (Exception e) {
// Do Nothing
}
}
if (port != null) {
JavaMixer.PortNode portNode = new JavaMixer.PortNode(port);
createPortChildren(portNode);
mixerNode.add(portNode);
} else if (dLine != null) {
JavaMixer.PortNode portNode = new JavaMixer.PortNode(dLine);
createPortChildren(portNode);
mixerNode.add(portNode);
}
}
}
}
private void mixerComboBoxActionPerformed() {
Mixer mixer = AudioSystem.getMixer((Mixer.Info) mixerComboBox.getSelectedItem());
Line.Info lineInfo = mixer.getSourceLineInfo(new Line.Info(Clip.class))[0];
boolean volumeSupported;
boolean panSupported;
try {
Line line = mixer.getLine(lineInfo);
volumeSupported = line.isControlSupported(FloatControl.Type.MASTER_GAIN);
panSupported = line.isControlSupported(FloatControl.Type.PAN);
} catch (LineUnavailableException e) {
volumeSupported = false;
panSupported = false;
}
enableMixerVolumeCheckBox.setEnabled(volumeSupported);
enableMixerPanCheckBox.setEnabled(panSupported);
}