import javax.media.*;
import com.sun.media.ui.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.util.Vector;
public class MDIApp extends Frame
{
/*************************************************************************
* MAIN PROGRAM / STATIC METHODS
*************************************************************************/
public static void main(String args[])
{
MDIApp mdi = new MDIApp();
}
static void Fatal(String s)
MessageBox mb = new MessageBox("JMF Error", s);
}
* VARIABLES
*************************************************************************/
JMFrame jmframe = null;
JDesktopPane desktop;
FileDialog fd = null;
CheckboxMenuItem cbAutoLoop = null;
Player player = null;
Player newPlayer = null;
String filename;
* METHODS
public MDIApp()
super("Java Media Player");
// Add the desktop pane
setLayout( new BorderLayout() );
desktop = new JDesktopPane();
desktop.setDoubleBuffered(true);//設定雙緩存
add("Center", desktop);
setMenuBar(createMenuBar());
setSize(640, 480);
setVisible(true);
try
{
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
}
catch (Exception e)
System.err.println("Could not initialize java.awt Metal lnf");
}
addWindowListener( new WindowAdapter() {
public void windowClosing(WindowEvent we) {
System.exit(0);
}
} );
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, new Boolean(true));
private MenuBar createMenuBar()
ActionListener al = new ActionListener()
public void actionPerformed(ActionEvent ae)
{
String command = ae.getActionCommand();
if (command.equals("Open"))
{
if (fd == null)
{
fd = new FileDialog(MDIApp.this, "Open File",
FileDialog.LOAD);
fd.setDirectory("/movies");
}
fd.show();
if (fd.getFile() != null)
String filename = fd.getDirectory() + fd.getFile();
openFile("file:" + filename);
}
else if (command.equals("Exit"))
dispose();
System.exit(0);
};
MenuItem item;
MenuBar mb = new MenuBar();
// File Menu
Menu mnFile = new Menu("File");
mnFile.add(item = new MenuItem("Open"));
item.addActionListener(al);
mnFile.add(item = new MenuItem("Exit"));
// Options Menu
Menu mnOptions = new Menu("Options");
cbAutoLoop = new CheckboxMenuItem("Auto replay");
cbAutoLoop.setState(true);
mnOptions.add(cbAutoLoop);
mb.add(mnFile);
mb.add(mnOptions);
return mb;
}
/**
* Open a media file.
*/
public void openFile(String filename)
String mediaFile = filename;
Player player = null;
// 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("Can't build URL for " + mediaFile);
return;
// Create an instance of a player for this media
try
player = Manager.createPlayer(url);//建立播放器
catch (NoPlayerException e)
Fatal("Error: " + e);
catch (MalformedURLException e)
Fatal("Error:" + e);
catch (IOException e)
if (player != null)
this.filename = filename;//儲存檔案名稱
JMFrame jmframe = new JMFrame(player, filename);//建立立一個播放視窗
desktop.add(jmframe);
}
class JMFrame extends JInternalFrame implements ControllerListener
{//播放器
Player mplayer;
Component visual = null;
Component control = null;
int videoWidth = 0;
int videoHeight = 0;
int controlHeight = 30;
int insetWidth = 10;
int insetHeight = 30;
boolean firstTime = true;
public JMFrame(Player player, String title)
super(title, true, true, true, true);
getContentPane().setLayout( new BorderLayout() );
setSize(320, 10);
setLocation(50, 50);
setVisible(true);
mplayer = player;
mplayer.addControllerListener((ControllerListener) this);
mplayer.realize();
addInternalFrameListener( new InternalFrameAdapter()
public void internalFrameClosing(InternalFrameEvent ife)
mplayer.close();
}
);
public void controllerUpdate(ControllerEvent ce)
if (ce instanceof RealizeCompleteEvent)
mplayer.prefetch();
else if (ce instanceof PrefetchCompleteEvent)
if (visual != null)
return;
if ((visual = mplayer.getVisualComponent()) != null)
Dimension size = visual.getPreferredSize();
videoWidth = size.width;
videoHeight = size.height;
getContentPane().add("Center", visual);
else
videoWidth = 320;
if ((control = mplayer.getControlPanelComponent()) != null)
controlHeight = control.getPreferredSize().height;
getContentPane().add("South", control);
setSize(videoWidth + insetWidth,videoHeight + controlHeight + insetHeight);
validate();
mplayer.start();
else if (ce instanceof EndOfMediaEvent)
mplayer.setMediaTime(new Time(0));
問題:如何結合Swing元件使用JMF。Swing元件是輕量級元件,而JMF預設使用的是重量級元件(它們可以為高速率的視訊使用本地的繪制方法)。
解決方案:
JMF2.0包含了幾個不同的視訊繪制器,可以強制讓播放器使用輕量級元件。示例如下:
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, new Boolean(true));
這在内部是通過PlugInManager來使其隻能使用輕量級繪制器,此後建立的任何播放器都将使用輕量級繪制器。注意的是存在父容器中的元件的雙緩存功能應該要開啟。
本文轉自Phinecos(洞庭散人)部落格園部落格,原文連結:http://www.cnblogs.com/phinecos/archive/2007/09/22/902864.html,如需轉載請自行聯系原作者