main.java

国外的j2me播放器软件

package no.auc.one.portableplayer;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Gauge;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.lcdui.Item;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

//import no.auc.one.portableplayer.communication.UPnPPresenceAdvertisementHandling;
import no.auc.one.portableplayer.communication.upnphosting.UPnPHosting;
import no.auc.one.portableplayer.lmr.MediaRenderer;
import no.auc.one.portableplayer.lms.ServerDevice;
import no.auc.one.portableplayer.settings.Settings;
import no.auc.one.portableplayer.userinterface.UI;

import org.apache.log4j.LogActivator;
import org.apache.log4j.Logger;

import ch.ethz.jadabs.osgi.j2me.OSGiContainer;

/**
 * Main is the startup class and responsible for starting the user interface 
 * subsystem which controls the rest of the application.
 *
 */
public class Main extends MIDlet {
	
    public static Logger LOG;
    //private UPnPPresenceAdvertisementHandling pah;
    private boolean isPaused = false;
    
    public Main() {
        // create OSGi container and set container 
        // properties from the MIDP application properties
        OSGiContainer osgicontainer = OSGiContainer.Instance();
        String priority = getAppProperty("ONEPP-Log4J-Priority");
        if (priority == null) {
        	priority = "DEBUG";
        }
        
        osgicontainer.setProperty(
            "log4j.priority", 
            priority);
        osgicontainer.startBundle(new LogActivator());
   
        // obtain a Logger from the logger factory for this class
        LOG = Logger.getLogger("Main");
    }

    /**
     * Pass control over to the user interface subsystem.
     */
	protected void startApp() throws MIDletStateChangeException {
        if (!isPaused) {
            try {
                Display d = javax.microedition.lcdui.Display.getDisplay(this); 
                Logger.getLogCanvas().setDisplay(d);
                
                StartScreen sc = new StartScreen("Starting...");
                d.setCurrent(sc);
                
                Settings settings = Settings.createInstance(this);                

                UI ui = UI.getInstance(this);
                System.out.println("UI initialized");
                
                UPnPHosting hosting = UPnPHosting.getInstance();
                hosting.start();
                
                sc.progress.setValue(10);
                System.out.println("Hosting started");
                
                LOG.debug("Registering LMS");
                ServerDevice sd = ServerDevice.getInstance();
                hosting.registerDevice(sd);
                sc.progress.setValue(20);
                System.out.println("LMS registered");
                
                LOG.debug("Registering LMR");
                MediaRenderer mr = MediaRenderer.getInstance();
                hosting.registerDevice(mr);
                sc.progress.setValue(40);
                System.out.println("LMR registered");
                
                LOG.debug("Adding LMR to MR list");
                settings.addMediaRendererByLocationUrl(
                    "http://" + hosting.getLocalAddress() + ":" + 
                        hosting.getLocalPort() + "/ssdp/" + mr.udn() + 
                        "/devicedescription.xml");
                sc.progress.setValue(50);
                LOG.debug("Adding LMS to MS list");
                settings.addMediaServerByLocationUrl(
                    "http://" + hosting.getLocalAddress() + ":" + 
                        hosting.getLocalPort() + "/ssdp/" + sd.udn() + 
                        "/devicedescription.xml");
                sc.progress.setValue(60);
                
                settings.loadSettings();
                sc.progress.setValue(100);

                /* PAH commented out due to lack of multicast support in J2ME :/
                // Start UPnP Presence Advertisement Handling thread
                pah = new UPnPPresenceAdvertisementHandling();
                pah.registerHandler(
                    new no.auc.one.portableplayer.communication.mediarenderer.MediaRendererPAH());
                pah.setPriority(Thread.MIN_PRIORITY);
                pah.start();
                */
                
                d.setCurrent(ui.getMainMenu());
                
                sc = null;
            } catch (Exception e) {
                LOG.fatal("Main unhandled Exception occured...");
                LOG.fatal(e);
                e.printStackTrace();
            } finally {
                System.out.println("Main start finished");
            }
        } else {
            isPaused = false;
            // pah.start();
        }
	}

    /**
     * Called by the Application Management Software (AMS) when the 
     * application should enter 'Pause mode', and shut down as much of its 
     * activity as possible.
     *
     * Currently this method does nothing.
     */
	protected void pauseApp() {
        // Pause the PAH thread
        // pah. 

        isPaused = true;
	}

    /**
     * Called by the Application Management Software (AMS) when the 
     * application is destroyed.
     */
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
	    // Notify Settings...
	    Settings.getInstance().saveSettings();
	}
	
    /**
     * Terminates the application.
     */
	public void quit() {
		try {
			destroyApp(true);
			notifyDestroyed();
		} catch (MIDletStateChangeException e) {
			e.printStackTrace();
		}
	}
    
    private class StartScreen extends Form implements CommandListener {
        private Gauge progress = null;
        
        public StartScreen(String title) {
            super(title);

            try {
                //addCommand(showLogCommand);
                setCommandListener(this);
                
                Image imgLogo = Image.createImage("/aml_noalpha.png");
                ImageItem logo = new ImageItem(
                    "Agder University College",
                    imgLogo,
                    Item.LAYOUT_CENTER | 
                    // (ahaeber) Not supported by J9: Item.LAYOUT_VCENTER | 
                    Item.LAYOUT_NEWLINE_AFTER | 
                    Item.PLAIN,
                    "Agder Mobility Lab");
                append(logo);
                append("ONE Portable Player v1.0.5000");

                progress = new Gauge("Progress", false, 100, 0);
                append(progress);
            } catch (/*IO*/Exception io) {
                LOG.fatal(io);
            }
        }

        public void commandAction(Command c, Displayable d) {
            /*
            Display disp = Display.getDisplay((MIDlet)this);
            org.apache.log4j.LogCanvas lc = Logger.getLogCanvas();
            lc.setPreviousScreen(disp.getCurrent());
            disp.setCurrent(lc);
            */
        }
    }    
}