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Stream MP3 To Mobile

Lennie De Villiers
Greenhorn

Joined: Jul 17, 2009
Posts: 24
Hi,

I've got the following sample program where you can provide it a link to an MP3 file, it must them stream the file.
But once I select the link it doesn't play, please advise.

Program:

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

public class PlayerMIDlet extends MIDlet implements
CommandListener, PlayerListener, Runnable {
private Display display;
private Form form;
private TextField url;
private Command start = new Command("Play",
Command.SCREEN, 1);
private Command stop = new Command("Stop",
Command.SCREEN, 2);
private Player player;

public PlayerMIDlet() {
display = Display.getDisplay(this);
form = new Form("Demo Player");
url = new TextField("Enter URL:", "", 100,
TextField.URL);
form.append(url);
form.addCommand(start);
form.addCommand(stop);
form.setCommandListener(this);
display.setCurrent(form);
}

protected void startApp() {
try {
if(player != null && player.getState() ==
Player.PREFETCHED) {
player.start();
} else {
defplayer();
display.setCurrent(form);
}
}
catch(MediaException me) {
reset();
}
}

protected void pauseApp() {
try {
if(player != null && player.getState() ==
Player.STARTED) {
player.stop();
} else {
defplayer();
}
}
catch(MediaException me) {
reset();
}
}

protected void destroyApp(
boolean unconditional) {
form = null;
try {
defplayer();
}
catch(MediaException me) {
}
}

public void playerUpdate(Player player,
String event, Object data) {
if(event == PlayerListener.END_OF_MEDIA) {
try {
defplayer();
}
catch(MediaException me) {
}
reset();
}
}

public void commandAction(Command c, Displayable d) {
if(c == start) {
start();
} else if(c == stop) {
stopPlayer();
}
}

public void start() {
Thread t = new Thread(this);
t.start();
}

// to prevent blocking, all communication should
// be in a thread
// and not in commandAction
public void run() {
play(getURL());
}

String getURL() {
return url.getString();
}

void play(String url) {
try {
VolumeControl vc;
defplayer();
// create a player instance
HttpConnection conn = (HttpConnection) Connector.open(url, Connector.READ_WRITE);
InputStream is = conn.openInputStream();
player = Manager.createPlayer(is,"audio/mpeg");
player.addPlayerListener(this);
// realize the player
player.realize();
vc = (VolumeControl) player.getControl("VolumeControl");
if(vc != null) {
Form v = new Form("Playing Audio...");
StringItem si = new StringItem("Status: ",
"Playing...");
v.append(si);;
display.setCurrent(v);
}
player.prefetch();
player.start();
}
catch(Throwable t) {
reset();
}
}

void defplayer() throws MediaException {
if (player != null) {
if(player.getState() == Player.STARTED) {
player.stop();
}
if(player.getState() == Player.PREFETCHED) {
player.deallocate();
}
if(player.getState() == Player.REALIZED ||
player.getState() == Player.UNREALIZED) {
player.close();
}
}
player = null;
}

void reset() {
player = null;
}

void stopPlayer() {
try {
defplayer();
}
catch(MediaException me) {
}
reset();
}
}

 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Stream MP3 To Mobile