Capture image from webcam java code, examples

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Panel;
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.FileOutputStream;
import java.net.MalformedURLException;
import java.net.URL;

import javax.media.Buffer;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Manager;
import javax.media.MediaLocator;
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.JComponent;

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

public class Camagain extends Applet implements ActionListener {

    /**
     *
     */
    private static final long serialVersionUID = -196359544994677518L;
    public static Player player;
    public CaptureDeviceInfo DI;
    public MediaLocator ML;
    public JButton CAPTURE;
    public Buffer BUF;
    public Image img;
    public VideoFormat VF;
    public BufferToImage BtoI;
    public ImagePanel imgpanel;
    public javax.swing.Timer timer = new javax.swing.Timer(200, this); // 200ms is too fast increase it to suit your need

    public void init(){
         purl = getParameter("url");
         url = purl;
        setLayout(new BorderLayout());
        setSize(320, 600);

        imgpanel = new ImagePanel();
        CAPTURE = new JButton("Capture");
        CAPTURE.addActionListener(this);

        String str1 = "vfw:Logitech USB Video Camera:0";
        String str2 = "vfw:Microsoft WDM Image Capture (Win32):0";
        DI = CaptureDeviceManager.getDevice(str2);
        ML = new MediaLocator("vfw://0");

        try {
            player = Manager.createRealizedPlayer(ML);
            player.start();
            Component comp;
            if ((comp = player.getVisualComponent()) != null) {
                add(comp, BorderLayout.NORTH);
            }
            add(CAPTURE, BorderLayout.CENTER);
            add(imgpanel, BorderLayout.SOUTH);
            Thread.sleep(5000);     // this is important, otherwise you may get NPE somewhere, needs polishing ;-)
            timer.start();                // start timer
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
   
    public void executeCapture(Camagain cf) {
        Frame f = new Frame("SwingCapture");
        //camagain cf = new camagain();   // I didn't had 'SwingCapture, so I added camgain.....

        f.addWindowListener(new WindowAdapter() {

            public void windowClosing(WindowEvent e) {
                playerclose();
                //System.exit(0);
            }
        });

        f.add("Center", cf);
        f.pack();
        f.setSize(new Dimension(320, 600));
        f.setVisible(true);
    }
    public static void playerclose() {
        player.close();
        player.deallocate();
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() instanceof JComponent) {
            JComponent c = (JComponent) e.getSource();
            if (c == CAPTURE) {
                actionCapture();  // maoved every thing to new method action()
            }
        } else if (e.getSource() instanceof javax.swing.Timer) {
            action();       // timer event , call action() again
        }
    }

    public void action() {    // your action handler code.....
        // Grab a frame
        FrameGrabbingControl fgc = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
        BUF = fgc.grabFrame();

        // Convert it to an image
        BtoI = new BufferToImage((VideoFormat) BUF.getFormat());
        img = BtoI.createImage(BUF);

        // show the image
        //imgpanel.setImage(img);

        // save image
       /* String path = System.getProperty("user.home")+"/xtest.jpg";
        // save image
        saveJPG(img, path);*/

        //webImageShow(path)
        /*System.out.println("Before Alert----");
        try {
            getAppletContext().showDocument
              (new URL("javascript:webImageShow(\"" + path +"\")"));
            }
          catch (MalformedURLException me) { }
         
          System.out.println("After Alert----");*/
    }

    public void actionCapture() {    // your action handler code.....
        // Grab a frame
        FrameGrabbingControl fgc = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
        BUF = fgc.grabFrame();

        // Convert it to an image
        BtoI = new BufferToImage((VideoFormat) BUF.getFormat());
        img = BtoI.createImage(BUF);

        // show the image
        imgpanel.setImage(img);

        // save image
       
        String fileName = System.currentTimeMillis()+".jpg";
       
        String path = System.getProperty("user.home")+"/"+fileName;
       
        // save image
        saveJPG(img, path);
        //upload(path, url);
       
        //Upload upload1 = new Upload(null, path, "http://10.10.0.176:8080/i-hrpro/upload_file.jsp");
        Upload upload1 = new Upload(null, path, url);
        (new Thread(upload1)).start();
       
        //webImageShow(path)
       
       //path = path.replace("\\", "/");
        //System.out.println("Before Alert----" + path);
        try {
            getAppletContext().showDocument
              (new URL("javascript:webImageShow(\"" + fileName +"\")"));
            }
          catch (MalformedURLException me) { }
         
          System.out.println("After Alert----");
    }
    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) {
            super.paint(g);
            g.drawImage(myimg, 0, 0, this);
        }
    }

    public static void saveJPG(Image img, String s) {
        BufferedImage bi = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = bi.createGraphics();
        g2.drawImage(img, null, null);
        FileOutputStream out = null;
        try {
            out = new FileOutputStream(s);
        } catch (java.io.FileNotFoundException io) {
            System.out.println("File Not Found");
        }

        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
        param.setQuality(0.5f, false);
        encoder.setJPEGEncodeParam(param);

        try {
            encoder.encode(bi);
            out.close();
        } catch (java.io.IOException io) {
            System.out.println("IOException");
        }
    }
   
    String url;
    String purl;
}