如何调用jmf打开摄像头

rosefinch123 2009-12-07 12:34:31

急~
我想知道怎样用jmf从摄像头读进帧然后修改完立刻返回到屏幕中？
其实我想把人脸框框画出来返回到屏幕上。。

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invoked 2009-12-07

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首先到SUN下载最新的JMF，然后安装。http://java.sun.com/products/java-media/jmf/index.jsp



  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; 

import com.sun.media.protocol.vfw.DataSource;





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; 

   

    public FirstCapture() 

    { 

   

   

        setLayout(new BorderLayout()); 

        setSize(320,550); 



        captureDeviceInfo=CaptureDeviceManager.getDevice("vfw:Microsoft WDM Image Capture (Win32):0"); //这里放置的是视频驱动

   

        mediaLocator=new MediaLocator("vfw://0"); //这里是视频地址

        imagePanel=new ImagePanel(); 

        capture=new JButton("拍照"); 

        capture.addActionListener(this); 

        DataSource ds = new DataSource();

        ds.setLocator(mediaLocator);

        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); 

    } 

 

    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); 

          } 

           

        } 

      } 

     

}