Java Media Framework - webcam on a web page
Hello,
I see on the forum the code
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import javax.media.*;
import javax.media.format.*;
import javax.media.util.*;
import javax.media.control.*;
import javax.media.protocol.*;
import java.util.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import com.sun.image.codec.jpeg.*;
publicclass SwingCaptureextends Panelimplements ActionListener
{
publicstatic Player player =null;
public CaptureDeviceInfo di =null;
public MediaLocator ml =null;
public JButton capture =null;
public Buffer buf =null;
public Image img =null;
public VideoFormat vf =null;
public BufferToImage btoi =null;
public ImagePanel imgpanel =null;
public SwingCapture()
{
setLayout(new BorderLayout());
setSize(320,550);
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 = di.getLocator();
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);
}
catch (Exception e)
{
e.printStackTrace();
}
}
publicstaticvoid main(String[] args)
{
Frame f =new Frame("SwingCapture");
SwingCapture cf =new SwingCapture();
f.addWindowListener(new WindowAdapter(){
publicvoid windowClosing(WindowEvent e){
playerclose();
System.exit(0);}});
f.add("Center",cf);
f.pack();
f.setSize(new Dimension(320,550));
f.setVisible(true);
}
publicstaticvoid playerclose()
{
player.close();
player.deallocate();
}
publicvoid actionPerformed(ActionEvent e)
{
JComponent c = (JComponent) e.getSource();
if (c == capture)
{
// 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
saveJPG(img,"c:<br clear="all" />test.jpg");
}
}
class ImagePanelextends Panel
{
public Image myimg =null;
public ImagePanel()
{
setLayout(null);
setSize(320,240);
}
publicvoid setImage(Image img)
{
this.myimg = img;
repaint();
}
publicvoid paint(Graphics g)
{
if (myimg !=null)
{
g.drawImage(myimg, 0, 0,this);
}
}
}
publicstaticvoid 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");
}
}
}
can you indiquate me how can I test it... I have copy this code on text file. I save it on SwingCapture.java after I have compile it with javac SwingCapture.java and finally i have write a html page
<HTML>
<BODY>
<APPLET code="SwingCapture.class" width="320" height="240" align="left">
</APPLET>
</BODY>
</HTML>
But when I load this HTML page, nothing on the screen... I have a USB webcam PHILIPS...
Please can someone help me...
Thanks a lot.
Fred
