videocanvas.java

手机视频播放软件

import javax.microedition.midlet.*; 
import javax.microedition.lcdui.*; 
import javax.microedition.media.*; 
import javax.microedition.media.control.*; 
import java.io.*; 

/** Acquires the video content and renders it */ 
public class VideoCanvas extends Canvas implements CommandListener, PlayerListener, Runnable { 

private VideoPlayer parent; 
private Display display; 

private Player player; 
private VideoControl videoControl; 

private String url; 
private Thread initializer; 

private Command close; 
private Command rePlay; 


public VideoCanvas(VideoPlayer parent){ 
super(); 
this.parent = parent; 
display = Display.getDisplay(parent); 
close = new Command("close", Command.SCREEN, 1); 
addCommand(close); 
setCommandListener(this); 
} 


public void initializeVideo(String url){ 
this.url = url; 
initializer = new Thread(this); 
initializer.start(); 
} 


public void run(){ 


playVideo(); 

} 


public void playVideo(){ 
	String[] contentType=Manager.getSupportedContentTypes(null);
	for(int i=0;i<contentType.length;i++)
	{
		System.out.println(contentType[i]);
	}
try { 
	
	System.out.println("11");
	try {
		InputStream is = getClass().getResourceAsStream(url); 
		player =  Manager.createPlayer(is, "video/mpeg");
	} catch (IOException e) {
		
		e.printStackTrace();
	} 
	System.out.println("222");
	//player = Manager.createPlayer("/test.mpg"); 

	player.addPlayerListener(this); 
	player.realize(); 

	player.prefetch(); 

	System.out.println("33");
videoControl = (VideoControl)player.getControl("VideoControl"); 
if (videoControl != null) { 
videoControl.initDisplayMode(videoControl.USE_DIRECT_VIDEO, this); 
} 



int cHeight = this.getHeight(); 
int cWidth = this.getWidth(); 
videoControl.setDisplaySize(cWidth, cHeight); 

display.setCurrent(this); 
videoControl.setVisible(true); 
player.start(); 
System.out.println("66");

} catch (MediaException me) { 
Alert alert = new Alert("MediaException thrown", me.getMessage(), null, AlertType.ERROR); 
display.setCurrent(alert); 
} 
} 


/** Paints background color */ 
public void paint(Graphics g){ 
g.setColor(128, 128, 128); 
g.fillRect(0, 0, getWidth(), getHeight()); 
} 


public void playerUpdate(Player p, String event, Object eventData) { 
//add "Replay" option when video is finished 
if (event == PlayerListener.END_OF_MEDIA) 
{ 
if (rePlay == null) 
{ 
rePlay = new Command("re-play", Command.SCREEN, 1); 
addCommand(rePlay); 
} 
} 

} 


public void commandAction(Command c, Displayable s) { 
if(c == rePlay){ 
try{ 
player.start(); 
} catch (MediaException me) { 
Alert alert = new Alert("MediaException thrown", me.getMessage(), null, AlertType.ERROR); 
display.setCurrent(alert); 
} 
} 

else if(c == close){ 
player.close(); 
parent.form.delete(1); 
display.setCurrent(parent.form); 
url=null; 
parent=null; 
} 

} 


}