jmfplayer.java

一个用Java语言写的媒体播放器程序

     		if ( (player.getTargetState() != Controller.Started) && cbAutoPlay.getState() ) 		
     		    player.start(); 	
     	} 	
     	else if (ce instanceof EndOfMediaEvent) 
     	{ 	    
     		if (cbAutoLoop.getState()) 
     		{ 		
     			player.setMediaTime(new Time(0)); 		
     			/* 		
     			player.start(); 		
     			player.stop(); 		
     			sleep(1000); 		
     			player.start(); 		
     			*/ 		
     			player.prefetch(); 	    
     		} 	
     	}  	
     	else if (ce instanceof ControllerErrorEvent) 
     	{ 	    
     		System.err.println("Received controller error"); 	    
     		killThePlayer(); 	    
     		if (visualComp != null) 	    
     		visualComp.remove(zoomMenu); 	    
     		panel.removeAll(); 	    
     		visualComp = null; 	    
     		controlComp = null; 	    
//     		setSize(320, 70); 	    
			    setPlaceholder();
				int nWidth,nHeight;
				insets = getInsets();
				nWidth = insets.left + insets.right + nImageWidth;
				nHeight = insets.top + insets.bottom + nImageHeight;
				setSize( nWidth, nHeight );
				setVisible(true);
				panel.setSize(nImageWidth, nImageHeight);
				panel.setVisible(true);
     		player.removeControllerListener( this ); 	   
     		player.close(); 	    
     		player = null; 	
     	}        
     	else if (ce instanceof SizeChangeEvent) { 	    
	    if (panel != null) {
		SizeChangeEvent sce = (SizeChangeEvent) ce;
		int nooWidth = sce.getWidth();
		int nooHeight = sce.getHeight();
		
		if (controlComp != null)
		    nooHeight += controlComp.getPreferredSize().height;
		if (  panel.getSize().width != nooWidth ||
		      panel.getSize().height != nooHeight) {
		    setSize(nooWidth + insets.left + insets.right,
			    nooHeight + insets.top + insets.bottom);
		}
		if (controlComp != null)
		    controlComp.invalidate();
	    }
	}
	else if (ce instanceof DeallocateEvent) {
	    if (visualComp != null) {
		visualComp.remove(zoomMenu);
		panel.remove(visualComp);
		visualComp = null;
	    }
	    if (controlComp != null) {
		panel.remove(controlComp);
		controlComp = null;
	    }
	    player.removeControllerListener(this);
	    player.close();
	    player = null;
	    System.gc();
	    System.runFinalization();
	    panel.invalidate();
//	    setSize(320, 70);
			    setPlaceholder();
				int nWidth,nHeight;
				insets = getInsets();
				nWidth = insets.left + insets.right + nImageWidth;
				nHeight = insets.top + insets.bottom + nImageHeight;
				setSize( nWidth, nHeight );
				setVisible(true);
				panel.setSize(nImageWidth, nImageHeight);
				panel.setVisible(true);
	    sleep(500);
	    if (newPlayer != null) {
		player = newPlayer;
		newPlayer = null;
		player.addControllerListener(this);
		player.realize();
		validate();
	    }
	}
    }
    
    public void zoomTo(float z) {
	insets = getInsets();
	if (videoSizeControl != null) {
	    Dimension d = videoSizeControl.getInputVideoSize();
	    d.width = (int) (d.width * z);
	    d.height = (int) (d.height * z);
	    if (controlComp != null)
		d.height += controlComp.getPreferredSize().height;
	    
	    setSize(d.width + insets.left + insets.right,
		    d.height + insets.top + insets.bottom);
	}
    }

    private void addPopupMenu(Component visual) {
	MenuItem mi;
	ActionListener zoomSelect;
	
	zoomMenu = new PopupMenu("Zoom");

	zoomSelect = new ActionListener() {
	    public void actionPerformed(ActionEvent ae) {
		String action = ae.getActionCommand();
		if (action.equals("1:2"))
		    zoomTo(0.5f);
		else if (action.equals("1:1"))
		    zoomTo(1.0f);
		else if (action.equals("2:1"))
		    zoomTo(2.0f);
		else if (action.equals("4:1"))
		    zoomTo(4.0f);
	    }
	};
	visual.add(zoomMenu);
	mi = new MenuItem("1:2");
	zoomMenu.add(mi);
	mi.addActionListener(zoomSelect);
	mi = new MenuItem("1:1");
	zoomMenu.add(mi);
	mi.addActionListener(zoomSelect);
	mi = new MenuItem("2:1");
	zoomMenu.add(mi);
	mi.addActionListener(zoomSelect);
	mi = new MenuItem("4:1");
	zoomMenu.add(mi);
	mi.addActionListener(zoomSelect);
	
	visual.addMouseListener( new MouseAdapter() {
	    public void mousePressed(MouseEvent me) {
		if (me.isPopupTrigger())
		    zoomMenu.show(visualComp, me.getX(), me.getY());
	    }

	    public void mouseReleased(MouseEvent me) {
		if (me.isPopupTrigger())
		    zoomMenu.show(visualComp, me.getX(), me.getY());
	    }

	    public void mouseClicked(MouseEvent me) {
		if (me.isPopupTrigger())
		    zoomMenu.show(visualComp, me.getX(), me.getY());
	    }
	} );
    }

    public void openFile(String filename) {
	String mediaFile = filename;
	Player player = null;
	
	
      URL url = null;
	try {

	    if ((url = new URL(mediaFile)) == null) {
		Fatal("Can't build URL for " + mediaFile);
		return;
	    }
	    

	    try {
		player = Manager.createPlayer(url);
	    } catch (NoPlayerException e) {
		Fatal("Error: " + e);
    	JOptionPane.showMessageDialog(null,"不支持该格式！");	
	    }
		} catch (MalformedURLException e) {
		    Fatal("Error:" + e);
		} catch (IOException e) {
		    Fatal("Error:" + e);
		}

	if (player != null) {
		    if (this.player == null) {
			this.player = player;
			player.addControllerListener(this);
			player.realize();
			this.filename = filename;
		    } else {
			newPlayer = player;
			this.filename = filename;
			killThePlayer();
		    }
		}
	else{
	    	JOptionPane.showMessageDialog(null,"无法播放该文件！");
	    } 
    }
	
    public void setPlaceholder () {
    	////////////////////////////////////////////////////
    	//
		imgBack=Toolkit.getDefaultToolkit().getImage(".\\img\\WMP03.jpg");
		//
		////////////////////////////////////////////////////
        if ( areaImagePlaceholder == null ) {
            if ( imgBack != null ) {
                areaImagePlaceholder = new ImageArea ( imgBack );
                areaImagePlaceholder.setInsets ( 0, 0, 0, 0 );
            }
        }

        if ( areaImagePlaceholder != null ) {
            panel.removeAll ();
            panel.add ( areaImagePlaceholder, BorderLayout.CENTER );
        }
    }

    public void  splashwnd()
    {
    	Image imgSplash=Toolkit.getDefaultToolkit().getImage(".\\img\\page.jpg");
    	ImageArea pnlImage=new ImageArea(imgSplash);
    	pnlImage.setInsets ( 0, 0, 0, 0 );
    	Window splashWindow = new Window(this);
    	splashWindow.add(pnlImage,BorderLayout.CENTER);
    	int nImageWidth = imgSplash.getWidth(this);
    	int nImageHeight = imgSplash.getHeight(this);
    	splashWindow.setSize(nImageWidth,nImageHeight);
    	splashWindow.setLocation(scmSize.width/2-nImageWidth/2,
    		scmSize.height/2-nImageHeight/2);
    	
    	splashWindow.show();
    	splashWindow.toFront();
    	
    	try{
    		Thread.currentThread().sleep(3000);
    	}
    	catch(Exception e)
    	{
    		e.printStackTrace();
    	}
    	
    	splashWindow.dispose();		
    }
    
    public static void main(String [] args) {
	Player player = null;
	String mediaFile = null;
	if (args.length == 0) {
        

	} else {
	    mediaFile = args[0];
	    // URL for our media file
	    URL url = null;
          try {
		// Create an url from the file name and the url to the
		// document containing this applet.
		if ((url = new URL(mediaFile)) == null)
		    Fatal("Error: Can't build URL for " + mediaFile);
		
		// Create an instance of a player for this media
		try {
		    player = Manager.createPlayer(url);
		} catch (NoPlayerException e) {
		    Fatal("Error: Could not create player for " + url);
		}
	    } catch (MalformedURLException e) {
		Fatal("Error: Invalid media file URL!");
	    } catch (IOException e) {
		Fatal("Error: IO exception creating player for " + url);
	    }
	}
	if (player == null)
	    mediaFile = null;
	    
	JMFPlayer frmJmfplayer = new JMFPlayer(player, mediaFile);
	frmJmfplayer.pack();
	frmJmfplayer.show();
    }

    static void Fatal(String s) {
//	MessageBox mb = new MessageBox("JMF Error", s);
	System.out.println (s); 
    }    
}


class ImageArea extends Panel {

    private Image    image = null;
    private Insets   insetsBorder = new Insets (6,6,6,6);

    public ImageArea ( Image image ) {
    	MediaTracker mt = new MediaTracker(this);
    	mt.addImage(image,0);
    	try
    	{
    		mt.waitForID(0);
    	}
    	catch(Exception e)
    	{
    		e.printStackTrace();
    	}
    	
		this.image = image;
    }

    public void setImage ( Image image ) {
	this.image = image;
    }

    public void setInsets ( int nLeft, int nTop, int nRight, int nBottom ) {
        insetsBorder.left = nLeft;
        insetsBorder.top = nTop;
        insetsBorder.right = nRight;
        insetsBorder.bottom = nBottom;
    }

    public void paint ( Graphics g ) {
        Dimension       dim;

        dim = this.getSize ();
        dim.width -= insetsBorder.left + insetsBorder.right;
        dim.height -= insetsBorder.top + insetsBorder.bottom;
        g.drawImage ( image, insetsBorder.left, insetsBorder.top, dim.width, dim.height, this );
    }

    public Dimension getPreferredSize () {
        Dimension      dim;

        if ( image == null )
            dim = new Dimension ( 0, 0 );
        else
            dim = new Dimension ( image.getWidth(this), image.getHeight(this) );
        dim.width += insetsBorder.left + insetsBorder.right;
        dim.height += insetsBorder.top + insetsBorder.bottom;
        return ( dim );
    }


}