VLCJ Equalizer work not correctly - vlcj

Question

i use VLCJ 3.0.1, Plattform 3.5.2 and JNA 3.5.2 under Ubuntu 14.10.
I would like to create a simple Vlcj Mediaplayer with equalizer.
The problem is, i can play the *.mp3, but when i enable the equalizer and change the gain from any band, i can hear that gain from the band up to max high. I couldn't change it to lower gain. No effect from the Slider. Only when i change the gain to max or min, the effekt is off.
Here is the Code only for testing:
FesterTest.java
public static void main(String[] args) {
Canvas m_surface;
EmbeddedMediaPlayer m_mediaPlayer;
Equalizer m_equalizer;
Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);
m_surface = new Canvas();
m_surface.setBackground(Color.black);
m_surface.setBounds(0, 0, 1024, 600);
MediaPlayerFactory mediaPlayerFactory = new MediaPlayerFactory();
m_mediaPlayer = mediaPlayerFactory.newEmbeddedMediaPlayer();
m_mediaPlayer.setVideoSurface(mediaPlayerFactory.newVideoSurface(m_surface));
System.out.println(mediaPlayerFactory.isEqualizerAvailable());
m_equalizer = mediaPlayerFactory.newEqualizer();
System.out.println(LibVlcConst.MAX_GAIN);
System.out.println(LibVlcConst.MIN_GAIN);
System.out.println(LibVlcConst.MIN_VOLUME);
System.out.println(LibVlcConst.MAX_VOLUME);
JFrame f = new JFrame();
JPanel p = new JPanel();
f.add(p);
p.add(m_surface);
f.setVisible(true);
m_mediaPlayer.playMedia("/home/patrick/Dev/content/068-becky_g_-_shower.mp3");
EqualizerFrame frame = new EqualizerFrame(mediaPlayerFactory.getEqualizerBandFrequencies(), mediaPlayerFactory.getEqualizerPresetNames(), mediaPlayerFactory, m_mediaPlayer, m_equalizer);
frame.pack();
frame.setVisible(true);
}
and EqualizerFrame:
public class EqualizerFrame extends JFrame implements ChangeListener, ActionListener, ItemListener {
private static final String BAND_INDEX_PROPERTY = "equalizerBandIndex";
private final String dbFormat = "%.2fdB";
private final MediaPlayerFactory mediaPlayerFactory;
private final MediaPlayer mediaPlayer;
private final Equalizer equalizer;
private final SliderControl preampControl;
private final SliderControl[] bandControls;
private final JToggleButton enableButton;
private final JComboBox presetComboBox;
#SuppressWarnings({ "unchecked", "rawtypes" })
public EqualizerFrame(List<Float> list, List<String> presets, MediaPlayerFactory mediaPlayerFactory, MediaPlayer mediaPlayer, Equalizer equalizer) {
super("Equalizer");
this.mediaPlayerFactory = mediaPlayerFactory;
this.mediaPlayer = mediaPlayer;
this.equalizer = equalizer;
setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
JPanel contentPane = new JPanel();
contentPane.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
contentPane.setLayout(new BorderLayout(0, 4));
JPanel bandsPane = new JPanel();
bandsPane.setLayout(new GridLayout(1, 1 + list.size(), 2, 0));
preampControl = new SliderControl("Preamp", (int)LibVlcConst.MIN_GAIN, (int)LibVlcConst.MAX_GAIN, 0, dbFormat);
preampControl.getSlider().addChangeListener(this);
bandsPane.add(preampControl);
bandControls = new SliderControl[list.size()];
for(int i = 0; i < list.size(); i++) {
bandControls[i] = new SliderControl(formatFrequency(list.get(i)), (int)LibVlcConst.MIN_GAIN, (int)LibVlcConst.MAX_GAIN, 0, dbFormat);
bandControls[i].getSlider().putClientProperty(BAND_INDEX_PROPERTY, i);
bandControls[i].getSlider().addChangeListener(this);
bandsPane.add(bandControls[i]);
}
contentPane.add(bandsPane, BorderLayout.CENTER);
JPanel controlsPane = new JPanel();
controlsPane.setLayout(new BoxLayout(controlsPane, BoxLayout.X_AXIS));
enableButton = new JToggleButton("Enable");
enableButton.setMnemonic('e');
controlsPane.add(enableButton);
controlsPane.add(Box.createHorizontalGlue());
JLabel presetLabel = new JLabel("Preset:");
presetLabel.setDisplayedMnemonic('p');
controlsPane.add(presetLabel);
presetComboBox = new JComboBox();
presetLabel.setLabelFor(presetComboBox);
DefaultComboBoxModel presetModel = (DefaultComboBoxModel)presetComboBox.getModel();
presetModel.addElement(null);
for(String presetName : presets) {
presetModel.addElement(presetName);
}
presetComboBox.setRenderer(new DefaultListCellRenderer() {
#Override
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
JLabel label = (JLabel)super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
if(value != null) {
label.setText(String.valueOf(value));
}
else {
label.setText("--Select--");
}
return label;
}
});
controlsPane.add(presetComboBox);
contentPane.add(controlsPane, BorderLayout.SOUTH);
setContentPane(contentPane);
enableButton.addActionListener(this);
presetComboBox.addItemListener(this);
}
private String formatFrequency(float hz) {
if(hz < 1000.0f) {
return String.format("%.0f Hz", hz);
}
else {
return String.format("%.0f kHz", hz / 1000f);
}
}
#Override
public final void actionPerformed(ActionEvent e) {
boolean enable = enableButton.isSelected();
if(!enable) {
presetComboBox.setSelectedItem(null);
}
mediaPlayer.setEqualizer(enable ? equalizer : null);
}
#Override
public void stateChanged(ChangeEvent e) {
if(e.getSource() instanceof JSlider) {
JSlider slider = (JSlider)e.getSource();
Integer index = (Integer)slider.getClientProperty(BAND_INDEX_PROPERTY);
int value = slider.getValue();
// Band...
if(index != null) {
equalizer.setAmp(index, (value / 100f));
}
// Preamp...
else {
equalizer.setPreamp(value / 100f);
}
if(!applyingPreset) {
presetComboBox.setSelectedItem(null);
}
}
}
boolean applyingPreset;
#Override
public final void itemStateChanged(ItemEvent e) {
String presetName = (String)presetComboBox.getSelectedItem();
if(e.getStateChange() == ItemEvent.SELECTED) {
if(presetName != null) {
Equalizer presetEqualizer = mediaPlayerFactory.newEqualizer(presetName);
if(presetEqualizer != null) {
applyingPreset = true;
preampControl.getSlider().setValue((int)(presetEqualizer.getPreamp() * 100f)); // FIXME
float[] amps = presetEqualizer.getAmps();
for(int i = 0; i < amps.length; i++) {
bandControls[i].getSlider().setValue((int)(amps[i] * 100f));
}
applyingPreset = false;
}
}
}
}
}
I don't know what can i do an hope anybody can help me!!!!
Thanks
Patrick