java显示声音波形图示例
本文导语: 代码如下:package _tmp; import java.awt.BorderLayout;import java.awt.Color;import java.awt.Graphics;import java.awt.Image;import java.awt.Toolkit;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.util.ArrayDeque;import java.util.Deque;import java.u...
package _tmp;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Timer;
import java.util.TimerTask;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.SourceDataLine;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class SoundTest {
public static class WaveformGraph extends JFrame {
private Deque deque = new LinkedList();
private Timer timer;
private Image buffered;
private Image showing;
public WaveformGraph(int width, int height) {
setSize(width, height);
timer = new Timer();
buffered = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
timer.schedule(new TimerTask() {
@Override public void run() {
Graphics g = buffered.getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(Color.BLACK);
g.translate(10, getHeight()/2);
synchronized (deque) {
float heightRate = 1;
if(deque.size() > 1) {
Iterator iter = deque.iterator();
Short p1 = iter.next();
Short p2 = iter.next();
int x1 = 0, x2 = 0;
while(iter.hasNext()) {
g.drawLine(x1, (int)(p1*heightRate), x2, (int)(p2*heightRate));
p1 = p2;
p2 = iter.next();
x1 = x2;
x2 += 1;
}
}
}
g.dispose();
SwingUtilities.invokeLater(new Runnable() {
@Override public void run() {
showing = buffered;
repaint();
showing = null;
}
});
}
}, 100, 100);
}
@Override
public void paint(Graphics g) {
super.paint(g);
if(buffered!=null) {
g.drawImage(buffered, 0, 0, null);
}
}
public void put(short v) {
synchronized (deque) {
deque.add(v);
if(deque.size() > 500) {
deque.removeFirst();
}
}
}
public void clear() {
deque.clear();
}
}
public static void main(String[] args) throws Exception {
// record();
WaveformGraph waveformGraph = new WaveformGraph(500, 300);
waveformGraph.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
waveformGraph.setVisible(true);
AudioInputStream ais = AudioSystem.getAudioInputStream(new File("C:\Documents and Settings\wml\My Documents\My Music\苏仨 - 失眠症.wav"));
printFormat(ais.getFormat());
SourceDataLine player = AudioSystem.getSourceDataLine(ais.getFormat());
player.open();
player.start();
byte[] buf = new byte[4];
int len;
while((len=ais.read(buf))!=-1) {
if(ais.getFormat().getChannels() == 2) {
if(ais.getFormat().getSampleRate() == 16) {
waveformGraph.put((short) ((buf[1]