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From: vinu patil on 18 Nov 2009 12:42
Hi,

We are group of students working on college project.
We want to capture webcam and show stream on screen.
We are using JMF and class JPEGImageEncoder.
Here we are getting setJPEGEncodeParam method not found error.

Please see detail error message and source code attached below.

Thanks in advance.

Regards,
Vinayak & Surendra

// Error and Warnings

SwingCapture.java:125: warning:
com.sun.image.codec.jpeg.JPEGImageEncoder is Sun proprietary API and
may be removed in a future release
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
^
SwingCapture.java:125: warning: com.sun.image.codec.jpeg.JPEGCodec is
Sun proprietary API and may be removed in a future release
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
^
SwingCapture.java:126: warning:
com.sun.image.codec.jpeg.JPEGEncodeParam is Sun proprietary API and
may be removed in a future release
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
^
SwingCapture.java:128: cannot find symbol
symbol : method setJPEGEncodeParam
(com.sun.image.codec.jpeg.JPEGEncodeParam)
location: class com.sun.image.codec.jpeg.JPEGImageEncoder
encoder.setJPEGEncodeParam(param);
^
1 error
3 warnings


// Source 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.*;
public class SwingCapture extends Panel implements ActionListener
{
public static 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();
}
}
public static void main(String[] args)
{
Frame f = new Frame("SwingCapture");
SwingCapture cf = new SwingCapture();
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
playerclose();
System.exit(0);}});
f.add("Center",cf);
f.pack();
f.setSize(new Dimension(320,550));
f.setVisible(true);
}
public static void playerclose()
{
player.close();
player.deallocate();
}
public void 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:\\test.jpg");
}
}
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);
}
}
}
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");
}
}
}
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