Problems with Player -- no sounds.

[Michael Tan]

public void testAudio(){
		try{
			String path = "file:///E:/test.mp3";
			FileConnection fileConnection = (FileConnection) Connector.open(path);
			InputStream inputStream = fileConnection.openInputStream();
			Player player = Manager.createPlayer(inputStream, "audio/mp3");
			player.start();
		}catch(Exception e){}
		
}

this code does not play the mp3 file.... what should i do to make it play?

in addition, i need to do some decryption on the bytes in the mp3 file, so i did this

public void testAudio(){
		try{
			String path = "file:///E:/test.mp3";
			FileConnection fileConnection = (FileConnection) Connector.open(path);
			byte [] fileBytes = new byte[(int) fileConnection.fileSize()];
			InputStream inputStream = new ByteArrayInputStream(fileBytes);
			Player player = Manager.createPlayer(inputStream, "audio/mp3");
			player.realize();
				
			VolumeControl vc = (VolumeControl) player.getControl("VolumeControl");
			vc.setLevel(100);
				
			player.prefetch();
			player.start();
		}catch(Exception e){}
}

and i get the error "javax.microedition.media.MediaException: Prefetch error: -5"

wat should i do to fix these problems?

[Peter Miklosko]

I used this code sometime ago, it may not be most pretty and efficient but it did its job

    public void playSound(String str)
    {
       try
        {
            InputStream is = getClass().getResourceAsStream(str);
            player = Manager.createPlayer(is, "audio/mpeg");
            player.addPlayerListener(this);
            player.realize();
            //get volume control
            vc = (VolumeControl) player.getControl("VolumeControl");
            if(vc != null)
                vc.setLevel(100);
            player.prefetch();
            long l = player.getDuration(); 
            player.start();
            Thread.sleep(l/1000);
            player.close();
        }
        catch(IllegalArgumentException iae)
        {
            System.out.println("InputStream is NULL");
            iae.printStackTrace();
        }
        catch(IOException ioe)
        {
            System.out.println("Unable to open file, file may not exist");
            ioe.printStackTrace();
        }
        catch(MediaException me)
        {            
            System.out.println("Player cannot be created for the given stream and type");
            me.printStackTrace();
        }
        catch(InterruptedException ie)
        {
            Thread.currentThread().interrupt();
        }
    }

[Michael Tan]

Peter Miklosko wrote:I used this code sometime ago, it may not be most pretty and efficient but it did its job

    public void playSound(String str)
    {
       try
        {
            InputStream is = getClass().getResourceAsStream(str);
            player = Manager.createPlayer(is, "audio/mpeg");
            player.addPlayerListener(this);
            player.realize();
            //get volume control
            vc = (VolumeControl) player.getControl("VolumeControl");
            if(vc != null)
                vc.setLevel(100);
            player.prefetch();
            long l = player.getDuration(); 
            player.start();
            Thread.sleep(l/1000);
            player.close();
        }
        catch(IllegalArgumentException iae)
        {
            System.out.println("InputStream is NULL");
            iae.printStackTrace();
        }
        catch(IOException ioe)
        {
            System.out.println("Unable to open file, file may not exist");
            ioe.printStackTrace();
        }
        catch(MediaException me)
        {            
            System.out.println("Player cannot be created for the given stream and type");
            me.printStackTrace();
        }
        catch(InterruptedException ie)
        {
            Thread.currentThread().interrupt();
        }
    }

hi, thanks for the help... however, i get the Exception "java.lang.IllegalArgumentException: InputStream is null.", when putting in the path as "file:///test.mp3". test.mp3 exists in the mass memory of the phone, and can be played using the built in player.

[Peter Miklosko]

Michael Tan wrote:
hi, thanks for the help... however, i get the Exception "java.lang.IllegalArgumentException: InputStream is null.", when putting in the path as "file:///test.mp3". test.mp3 exists in the mass memory of the phone, and can be played using the built in player.

This is because my code was reading resources from inside JAR. You need to edit that line and provide stream representation of chosen file