source.java

来自「手机播放铃音示例」· Java 代码 · 共 89 行

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

public class Source implements PlayerListener {
	Player p;
	VolumeControl volC;
	
	Source(String fileName){
		InputStream is = getClass().getResourceAsStream(fileName);
		
		if(is == null){
			System.out.println("Error creating InputStream " + fileName);
		}
		
		try{
			p = Manager.createPlayer(is,"audio/X-wav");
			if(p == null){
				System.out.println("Error creating Player " + fileName);
			}
			else {
				p.addPlayerListener(this);
				p.realize();
				p.prefetch();
				p.setLoopCount(-1);
				System.out.println("Realized Player:" + fileName);
			}
		}
		catch(IOException e){
			System.out.println(e);
		}
		catch(MediaException e){
			System.out.println(e);
		}
		
		volC = (VolumeControl)p.getControl("VolumeControl");
	}
	
	public void destroy(){
		if(p != null){
			p.close();
		}
	}
	public void start(){
		if(p != null){
			try{
				p.start();
			}
			catch(MediaException e){
				System.out.println(e);
			}
		}
	}
	public void stop(){
		if(p != null && p.getState() == Player.STARTED){
			try{
				p.stop();
			}
			catch(MediaException e){
				System.out.println(e);
			}
		}
	}
	public void rewind(){
		if(p != null && p.getState() == Player.PREFETCHED){
			try{
				p.setMediaTime(-1);
			}
			catch(MediaException e){
				System.out.println(e);
			}
		}
	}
	public int setLevel(int level){
		return volC.setLevel(level);
	}
	public void playerUpdate(Player p,String event,Object eventData){
		if(event == STARTED)
			System.out.println("Player started");
		else if(event == STOPPED)
			System.out.println("Player stopped");
		else if(event == END_OF_MEDIA)
			System.out.println("Player at end of file");
		else if(event == VOLUME_CHANGED)
			System.out.println("Player volume changed");
		else if(event == CLOSED)
			System.out.println("Player closed");
	}
}