/*
* This file is part of VLCJ.
*
* VLCJ is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* VLCJ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with VLCJ. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2009, 2010, 2011, 2012, 2013, 2014 Caprica Software Limited.
*/
package uk.co.caprica.vlcj.test.basic;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.List;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.DefaultComboBoxModel;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JToggleButton;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import uk.co.caprica.vlcj.binding.LibVlcConst;
import uk.co.caprica.vlcj.player.Equalizer;
import uk.co.caprica.vlcj.player.MediaPlayer;
import uk.co.caprica.vlcj.player.MediaPlayerFactory;
/**
* Separate frame to hold audio equalizer controls.
* <p>
* This is just an example, some shortcuts with regards to the slider controls have been taken.
*/
@SuppressWarnings("serial")
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;
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); // FIXME
}
// 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;
}
}
}
}
}