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Video recorder and player in Java ME (complete project)

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Article Metadata
Code ExampleTested with
SDK: NetBeans 5.5 and Mobility Pack 5.5
Article
Created: dcrocha (08 Nov 2007)
Last edited: hamishwillee (29 Jul 2013)

This is a small project developed to show the capability of video recording and playing on Nokia devices using the Mobile Media API of Java ME. This project was developed with NetBeans 5.5 + Mobility Pack 5.5.

VideoRecordMIDlet.java

package example;
 
import javax.microedition.lcdui.Display;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
 
public class VideoRecordMIDlet extends MIDlet {
 
VideoCanvas canvas = null;
 
protected void startApp() throws MIDletStateChangeException {
canvas = new VideoCanvas(this);
Display.getDisplay(this).setCurrent(canvas);
}
 
protected void pauseApp() {
// TODO Auto-generated method stub
 
}
 
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
 
}
 
}


VideoCanvas.java

 
package example;
 
import java.io.OutputStream;
import java.util.Date;
 
import javax.microedition.io.Connector;
import javax.microedition.io.file.FileConnection;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.media.Manager;
import javax.microedition.media.Player;
import javax.microedition.media.PlayerListener;
import javax.microedition.media.control.RecordControl;
import javax.microedition.media.control.VideoControl;
 
public class VideoCanvas extends Canvas implements PlayerListener, CommandListener {
 
private VideoRecordMIDlet midlet = null;
private Command start = new Command("Start",Command.OK,0);
private Command stop = new Command("Stop",Command.OK,1);
private Command exit = new Command("Exit",Command.BACK,0);
private Command play = new Command("Play",Command.OK,2);
private String status = "Not initialized";
private Player player = null;
private VideoControl control = null;
private RecordControl record = null;
private boolean recording = false;
private FileConnection conn = null;
private OutputStream stream = null;
private String PATH = System.getProperty("fileconn.dir.videos");
private String videoPath = null;
 
/**
* Constructor
*
* @param midlet
*/

 
public VideoCanvas(VideoRecordMIDlet midlet) {
System.out.println(PATH);
this.midlet = midlet;
addCommand(play);
addCommand(start);
addCommand(stop);
addCommand(exit);
setCommandListener(this);
}
 
public void commandAction(Command c, Displayable arg1) {
if(c == start) {
recording = true;
startRecording();
}
else if(c == stop) {
stop();
recording = false;
}
else if(c == play) {
recording = false;
repaint();
startPlaying();
}
else if(c == exit) {
midlet.notifyDestroyed();
}
}
 
/**
* Paint
*/

 
protected void paint(Graphics g) {
g.setColor(0,0,0);
g.fillRect(0,0,getWidth(),getHeight());
}
 
public void startRecording() {
videoPath = PATH + getFileName();
System.err.println(videoPath);
try {
player = Manager.createPlayer("capture://video");
player.addPlayerListener(this);
player.realize();
 
//setup recording
record = (RecordControl)player.getControl("RecordControl");
record.setRecordSizeLimit(300000);
conn = (FileConnection)Connector.open(videoPath,Connector.READ_WRITE);
if(!conn.exists()) conn.create();
stream = conn.openOutputStream();
record.setRecordStream(stream);
 
// Grab the video control and set it to the current display.
control = (VideoControl)player.getControl("VideoControl");
if (control != null) {
control.initDisplayMode(VideoControl.USE_DIRECT_VIDEO,this);
control.setDisplaySize(getWidth(),getHeight());
control.setVisible(true);
}
 
player.start();
record.startRecord();
}
catch(Exception e) {
Alert erro = new Alert("Erro",e.toString(),null,AlertType.ERROR);
Display.getDisplay(midlet).setCurrent(erro);
e.printStackTrace();
}
}
 
/**
* Start
*
*/

 
public void startPlaying() {
try {
player = Manager.createPlayer(videoPath);
player.addPlayerListener(this);
player.realize();
 
// Grab the video control and set it to the current display.
control = (VideoControl)player.getControl("VideoControl");
if (control != null) {
control.initDisplayMode(VideoControl.USE_DIRECT_VIDEO,this);
control.setDisplaySize(176,144);
control.setDisplayLocation((getWidth() - control.getDisplayWidth()) / 2,(getHeight() - control.getDisplayHeight()) / 2);
control.setVisible(true);
}
 
player.start();
}
catch(Exception e) {
Alert erro = new Alert("Erro",e.getMessage(),null,AlertType.ERROR);
Display.getDisplay(midlet).setCurrent(erro);
e.printStackTrace();
}
}
 
public void stop() {
if(player != null) {
try {
if(recording) {
record.stopRecord();
record.commit();
stream.close();
}
player.stop();
player.deallocate();
player.close();
player = null;
if(recording) {
Alert alert = new Alert("Message","Recorded in " + videoPath,null,AlertType.INFO);
Display.getDisplay(midlet).setCurrent(alert,this);
stream = null;
}
 
if(conn != null)
conn.close();
}
catch(Exception e) {
 
}
}
}
 
public void playerUpdate(Player p, String s, Object o) {
 
if(p.getState() == Player.STARTED) {
status = control.getDisplayHeight() + "=" + control.getDisplayWidth();
setTitle(status);
}
 
}
 
private String getFileName() {
Date d = new Date();
String retValue = d.getTime() + "_rec.3gp";
return retValue;
}
 
}

Download link: Media:VideoRecorder.zip

dcrocha 15:40, 8 November 2007 (EET)

This page was last modified on 29 July 2013, at 14:04.
104 page views in the last 30 days.
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