jmf实例

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Panel;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.media.Buffer;
import javax.media.CannotRealizeException;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.control.FrameGrabbingControl;
import javax.media.format.VideoFormat;
import javax.media.util.BufferToImage;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

import com.sun.image.codec.jpeg.ImageFormatException;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
* @author
* @version 创建时间：Apr 28, 2008 8:02:26 PM
* 类说明:
*/
public class FirstCapture extends JPanel implements ActionListener{

private CaptureDeviceInfo captureDeviceInfo=null;
private MediaLocator mediaLocator=null;
private static Player player=null;
private ImagePanel imagePanel=null;
private JButton capture;
private Buffer buffer=null;
private VideoFormat videoFormat=null;
private BufferToImage bufferToImage=null;
private Image image=null;
/**
* @param args
*/
public FirstCapture()
{
setLayout(new BorderLayout());
setSize(320,550);
String str="vfw:Microsoft WDM Image Capture (Win32):0";
captureDeviceInfo=CaptureDeviceManager.getDevice(str);
mediaLocator=new MediaLocator("vfw://0");
imagePanel=new ImagePanel();
capture=new JButton("拍照");
capture.addActionListener(this);
try {
player=Manager.createRealizedPlayer(mediaLocator);
player.start();
Component comp;
Component comp1;
if((comp=player.getVisualComponent())!=null)
add(comp,BorderLayout.NORTH);
// if((comp1=player.getControlPanelComponent())!=null)
// add(comp1,BorderLayout.CENTER);
} catch (NoPlayerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (CannotRealizeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
add(imagePanel,BorderLayout.SOUTH);
add(capture,BorderLayout.CENTER);
}

@Override
public void print(Graphics g) {
// TODO Auto-generated method stub
super.print(g);
g.setColor(new Color(255,0,0));
      g.drawLine(0, 0, 100, 100);
}

public static void main(String[] args) {
// TODO Auto-generated method stub
JFrame f = new JFrame("FirstCapture");
FirstCapture cf = new FirstCapture();
   
    f.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
      player.close();
      System.exit(0);}});
   
    f.add("Center",cf);
    f.pack();
    f.setSize(new Dimension(320,550));
    f.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
FrameGrabbingControl fgc=(FrameGrabbingControl)player.getControl("javax.media.control.FrameGrabbingControl");
buffer=fgc.grabFrame();
bufferToImage=new BufferToImage((VideoFormat)buffer.getFormat());
image=bufferToImage.createImage(buffer);
imagePanel.setImage(image);
saveImage(image,"D:/test.jpg");
}
public static void saveImage(Image image,String path)
{
BufferedImage bi=new BufferedImage(image.getWidth(null),image.getHeight(null),BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = bi.createGraphics();
g2.drawImage(image, null, null);
FileOutputStream fos=null;
try {
fos=new FileOutputStream(path);

} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JPEGImageEncoder je=JPEGCodec.createJPEGEncoder(fos);
JPEGEncodeParam jp=je.getDefaultJPEGEncodeParam(bi);
jp.setQuality(0.5f, false);
je.setJPEGEncodeParam(jp);
try {
je.encode(bi);
fos.close();
} catch (ImageFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
class ImagePanel extends Panel
  {
    public Image myimg = null;
   
    public ImagePanel()
    {
      setLayout(null);
      setSize(320,240);
    }
   
    public void setImage(Image img)
    {
      this.myimg = img;
      repaint();
    }
   
    public void paint(Graphics g)
    {
      if (myimg != null)
      {
        g.drawImage(myimg, 0, 0, this);
      }
     
    }
  }

}