codice java per acquisire l'immagine tramite webcam UnsatisfiedLinkError

Question

Sto usando il sistema operativo Windows 7 a 64 bit. Il codice sorgente è per catturare l'immagine tramite webcam:

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"); 
    } 
    } 

} 

Questo codice è compilato con successo. Sulla esecuzione del codice, il seguente errore di runtime si verifica:

Exception in thread "VFW Request Thread" java.lang.UnsatisfiedLinkError:JMFSecurityManager: java.lang.UnsatisfiedLinkError:no jmvfw in 
java.library.path at com.sun.media.JMFSecurityManager.loadLibrary(JMFSecurityManager.java:206) 
at com.sun.media.protocol.vfw.VFWCapture.<clinit><VFWCapture.java:19> 
at com.sun.media.protocol.vfw.VFWSourceStream.doConnect(VFWSourceStream.java:241) 
at com.sun.media.protocol.vfw.VFWSourceStream.run(VFWSourceStream.java:763) 
at java.cdlang.Thread.run(Thread.java:619) 

Vi prego di inviarmi soluzione di questo problema/

Answer 1

Ecco una soluzione, ma non l'ho provato: https://forums.oracle.com/forums/thread.jspa?messageID=10191973

In sostanza, ciò che dice è disinstallare 64 bit jdk e installare invece 32 bit.