package greenfoot.sound;

import java.util.LinkedList;

import javax.sound.sampled.Clip;




| On OpenJDK/IcedTea (pulseaudio, 2012-03-26) it seems that clips take a long time to close
| after they have finished playing. To prevent this from blocking us, we have a dedicated thread
| (this class) to close old clips.
|
| @author Davin McCall
|
public class ClipCloserThread
implements Runnable{    
   private LinkedList<Clip> clips = new LinkedList<Clip>();
    
   
   private Thread thread;
    
   
   public ClipCloserThread()
   {     
   }
    
   
public void addClip(Clip clip)
   {
   synchronized (clips) {
      clips.add(clip);
      clips.notify();
            
      if (thread == null || ! thread.isAlive()) {                
         thread = new Thread(this);
         thread.setDaemon(true);
         thread.start();             
         }         
      }     
   }
    
   
@Override
   
public void run()
   {        
   try {
   while (true){                
      Clip clip;
      synchronized (clips) {
         while (clips.isEmpty()){
            clips.wait();                     
            }
         clip = clips.removeFirst();                 
         }
                
      clip.close();             
      }         
   }
       
catch (InterruptedException ie) {
}     
} 
}