jsr184cammidlet.java

Use mobile take picture

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.MediaException;
import javax.microedition.m3g.*;
import javax.microedition.io.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
import java.io.IOException;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
import javax.microedition.midlet.MIDlet;

public class JSR184CamMidlet extends MIDlet implements CommandListener {
    private TextureCreator tc;
    private Command ExitCommand;
    private Display Display;
    private Image texImage = null;
    
    public void startApp() {
        Display = Display.getDisplay(this);
        ExitCommand = new Command("Exit", Command.EXIT, 0);
        tc = new TextureCreator();
        tc.addCommand(ExitCommand);
        tc.setCommandListener(this);
        Display.setCurrent(tc);
    }

    public void pauseApp() {

    }

    public void destroyApp(boolean unconditional) {

    }
     public void commandAction(Command command, Displayable displayable) {
        if(command.getCommandType() == Command.EXIT){
            notifyDestroyed();
        }else if(command.getCommandType() == Command.OK){  // display 3D-canvas
            texImage = tc.getTexture();
        }else if(command == tc.CaptureCommand){ // capture image
            tc.snapShot();
        }
    }
}

 class TextureCreator extends Canvas{

    private Image mTextureImage = null;
    protected Command CaptureCommand,CameraCommand,ExitCommand,BackCommand;
    private Command DoneCommand ;
    private VideoControl vc; // The videocontrol and the player is used to capture the image.
    private Player player;
    private Form MainForm;
    
    public TextureCreator(){
        CaptureCommand = new Command("Capture", Command.SCREEN, 0);
        DoneCommand = new Command("Done", Command.OK, 0); 
        addCommand(CaptureCommand);
        addCommand(DoneCommand);
         try{
            player = Manager.createPlayer("capture://video");
            player.realize();

            vc = (VideoControl)player.getControl("VideoControl");
            vc.initDisplayMode(vc.USE_DIRECT_VIDEO, this);
            vc.setDisplaySize(256,256); // only display a 256x256 part of the image since we need the final image to be the power of tow
            vc.setDisplayLocation(0, getHeight()-256);

            player.start();
 
        }catch(Exception e){
            System.out.println(e.getMessage());
            System.out.println(e);
        }

    }
    private void stop(){
        vc = null;
        player.close();
        player = null;
    }
     public Image getTexture(){
        stop();
        return mTextureImage;
    }
    
    
    
    public void paint(Graphics g) {
        if(mTextureImage != null){
            g.setColor(0xFFFFFF);
            g.fillRect(0, 0, getWidth(), getHeight());
            g.drawImage(mTextureImage, 0, 0, 0);
        }
    }
    public Image snapShot(){
        byte []raw;
        try{
            raw = vc.getSnapshot(null);
            mTextureImage = Image.createImage(raw, 0, raw.length);
        }catch(Exception e){
            System.out.println(e.getMessage());
            System.out.println(e);
        }

        // create a 256x256 image since the texture must be the power of two.
        Image m = Image.createImage(256,256);
        Graphics g = m.getGraphics();
        g.drawImage(mTextureImage, 0, -mTextureImage.getHeight()+256, 0); // draw the part of the captured image we want to use as texture.
        mTextureImage = null;
        mTextureImage = Image.createImage(m); // We need an immutable image as texture.
        repaint();
        return mTextureImage;
    }

    public void playerUpdate(javax.microedition.media.Player player, String str, Object obj) {
    }
}