rtpplayerapplet.java

Rtp Player Applet Sample

/*
 * @(#)RTPPlayerApplet.java	1.3 01/03/13
 *
 * Copyright (c) 1999-2001 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */


import java.applet.Applet;
import javax.media.rtp.*;
import javax.media.rtp.rtcp.*;
import javax.media.rtp.event.*;
import com.sun.media.rtp.RTPSessionMgr;
import java.io.*;
import java.awt.*;
import java.util.Vector;
import java.net.*;
import java.awt.event.*;
import java.lang.String;
import javax.media.*;
import javax.media.protocol.*;
import com.sun.media.*;
import com.sun.media.ui.*;
import java.io.IOException;
import java.lang.SecurityException;
import rtp.*;

// This RTP applet will allow a user to playback streams for one audio
// session and one  video session. Video and Audio RTP monitors are
// also available for displaying RTCP statistics of this
// session.Methods
// StartSessionManager() will take care of starting the session and
// registering this applet as an RTP Session Listener.
// Method RTPSessionUpdate() will process all the RTPEvents sent by
// the SessionManager.
public class RTPPlayerApplet  extends Applet implements
ControllerListener, ReceiveStreamListener, ActionListener{
  
    
    InetAddress destaddr;
    String address;
    String portstr;
    String media;
    Player videoplayer = null;
    SessionManager videomgr = null;
    SessionManager audiomgr = null;
    Component visualComponent = null;
    Component controlComponent = null;
    Panel panel = null;
    Button audiobutton = null;
    Button videobutton = null;
    GridBagLayout gridbag = null;
    GridBagConstraints c = null;
    ParticipantListWindow videogui = null;
    ParticipantListWindow audiogui = null;
    int width = 320;
    int height =0;
    Vector playerlist = new Vector();
   
    
    public void init(){
        setLayout( new BorderLayout() );
        Panel buttonPanel = new Panel();
        buttonPanel.setLayout( new FlowLayout() );
        add("North", buttonPanel);
        media = getParameter("video");
        if (media.equals("On")){
            address = getParameter("videosession");
            portstr = getParameter("videoport");
            StartSessionManager(address,
                                StrToInt(portstr),
                                "video");
            if (videomgr == null){
                System.err.println("null video manager ");
                return;
            }
            // this is the GUI for displaying the RTCP
            // statistics. This will not be displayed until the user
            // clicks on the RTP Monitor window
            //videogui = new ParticipantListWindow(videomgr);
            // add a button for the video RTP monitor
            videobutton = new Button("Video RTP Monitor");
            videobutton.addActionListener(this);
            buttonPanel.add(videobutton);
        }
        media = getParameter("audio");
        if (media.equals("On")){
            address = getParameter("audiosession");
            portstr = getParameter("audioport");
            StartSessionManager(address,
                                StrToInt(portstr),
                                "audio");
            if (audiomgr == null){
                System.err.println("null audio manager");
                return;
            }
            //audiogui = new ParticipantListWindow(audiomgr);
            // add a button for the audio RTP monitor
            audiobutton = new Button("Audio RTP Monitor");
            audiobutton.addActionListener(this);
            buttonPanel.add(audiobutton);
        }
    }// end of constructor

    public void start(){
        // The applet only controls the first video player by adding
        // its visual and control component to the applet canvas. Thus
        // only this player needs to be controlled when this applet is
        // swiched in browser pages etc.
        if (videoplayer != null){
            videoplayer.start();
        }
        if (playerlist == null)
            return;
        for (int i =0; i < playerlist.size(); i++){
            Player player = (Player)playerlist.elementAt(i);
            if (player != null)
                new PlayerWindow(player);
        }
    }
    // applet has been stopped, stop and deallocate all the RTP players.
    public void stop(){
        if (videoplayer != null){
            videoplayer.close();
        }
        if (playerlist == null)
            return;
        for (int i =0; i < playerlist.size(); i++){
            Player player = (Player)playerlist.elementAt(i);
            if (player != null){
                player.close();
            }
        }
    }

    // applet has been destroyed by the browser. Close the Session
    // Manager. 
    public void destroy(){
        // close the video and audio RTP SessionManagers
        String reason = "Shutdown RTP Player";
        
        if (videomgr != null){
            videomgr.closeSession(reason);
            videoplayer = null;
            videomgr = null;
        }
        
        if (audiomgr != null){
            audiomgr.closeSession(reason);
            audiomgr = null;
        }
        super.destroy();
    }
            
   
    public void actionPerformed(ActionEvent event){
        Button button = (Button)event.getSource();
        if ((button == videobutton) && (videomgr != null))
            videogui = new ParticipantListWindow(videomgr);
            //videogui.Show();
        if ((button == audiobutton) && (audiomgr != null))
            audiogui = new ParticipantListWindow(audiomgr);
            //audiogui.Show();
    }
    
    public String getAddress(){
        return  address;
    }
    
    public int getPort(){
        // the port has to be returned as an integer
        return StrToInt(portstr);
    }
    
    public String getMedia(){
        return media;
    }
    
    private int StrToInt(String str){
        if (str == null)
            return -1;
        Integer retint = new Integer(str);
        return  retint.intValue();
    }

    public synchronized void controllerUpdate(ControllerEvent event) {
        Player player = null;
        Controller controller = (Controller)event.getSource();
        if (controller instanceof Player)
            player  =(Player)event.getSource();