import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.sound.sampled.*;
public class DataLineInfoGUI extends JPanel {
PCMFilePlayer player;
JButton startButton;
public DataLineInfoGUI (File f) {
super();
try {
player = new PCMFilePlayer (f);
} catch (Exception ioe) {
add (new JLabel ("Error: " +
ioe.getMessage()));
return;
}
DataLine line = player.getLine();
// layout
// line 1: name
setLayout (new BoxLayout (this, BoxLayout.Y_AXIS));
add (new JLabel ("File: " +
player.getFile().getName()));
// line 2: levels
add (new DataLineLevelMeter (line));
// line 3: format info as textarea
AudioFormat format = line.getFormat();
JTextArea ta = new JTextArea();
ta.setBorder (new TitledBorder ("Format"));
ta.append ("Encoding: " +
format.getEncoding().toString() + "\n");
ta.append ("Bits/sample: " +
format.getSampleSizeInBits() + "\n");
ta.append ("Channels: " +
format.getChannels() + "\n");
ta.append ("Endianness: " +
(format.isBigEndian() ? " big " : "little") + "\n");
ta.append ("Frame size: " +
format.getFrameSize() + "\n");
ta.append ("Frame rate: " +
format.getFrameRate() + "\n");
add (ta);
// now start playing
player.start();
}
public static void main (String[] args) {
JFileChooser chooser = new JFileChooser();
chooser.showOpenDialog(null);
File file = chooser.getSelectedFile();
DataLineInfoGUI demo =
new DataLineInfoGUI (file);
JFrame f = new JFrame ("JavaSound info");
f.getContentPane().add (demo);
f.pack();
f.setVisible(true);
}
class DataLineLevelMeter extends JPanel {
DataLine line;
float level = 0.0f;
public DataLineLevelMeter (DataLine l) {
line = l;
Timer timer =
new Timer (50,
new ActionListener (){
public void actionPerformed (ActionEvent e) {
level = line.getLevel();
repaint();
}
});
timer.start();
}
public void paint (Graphics g) {
Dimension d = getSize();
g.setColor (Color.green);
int meterWidth = (int) (level * (float) d.width);
g.fillRect (0, 0, meterWidth, d.height);
}
}
}
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