Deprimer at 10:56, 8 February 2007

2007-02-08T10:56:06Z

New page

* This MIDlet consists of two classes: CameraMidlet and CameraCanvas.

<pre>
import java.io.IOException;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
import javax.microedition.midlet.MIDlet;
import javax.microedition.media.control.VideoControl;

public class CameraMidlet extends MIDlet implements CommandListener {

private Display display;
private Form form;
private Command exit,back,capture,camera;
private Player player;
private VideoControl videoControl;
private Video video;

public CameraMidlet() {

exit = new Command("Exit", Command.EXIT, 0);
camera = new Command("Camera", Command.SCREEN, 0);
back = new Command("Back", Command.BACK, 0);
capture = new Command("Capture", Command.SCREEN, 0);

form = new Form("Capture Video");
form.addCommand(camera);
form.setCommandListener(this);
}

public void startApp() {
display = Display.getDisplay(this);
display.setCurrent(form);
}

public void pauseApp() {}

public void destroyApp(boolean unconditional) {}

public void commandAction(Command c, Displayable s) {
if (c == exit) {
destroyApp(true);
notifyDestroyed();
} else if (c == camera) {
showCamera();
} else if (c == back)
display.setCurrent(form);
else if (c == capture) {
video = new Video(this);
video.start();
}
}

public void showCamera() {
try {
player = Manager.createPlayer("capture://video");
player.realize();

videoControl = (VideoControl)player.getControl("VideoControl");
Canvas canvas = new CameraCanvas(this, videoControl);
canvas.addCommand(back);
canvas.addCommand(capture);
canvas.setCommandListener(this);
display.setCurrent(canvas);
player.start();
} catch (IOException ioe) {} catch (MediaException me) {}
}

class Video extends Thread {
CameraMidlet midlet;
public Video(CameraMidlet midlet) {
this.midlet = midlet;
}

public void run() {
captureVideo();

}

public void captureVideo() {
try {
byte[] raw = videoControl.getSnapshot(null);
Image image = Image.createImage(raw, 0, raw.length);
form.append(image);
display.setCurrent(form);

player.close();
player = null;
videoControl = null;
raw = null;
} catch (MediaException me) { }
}
};
}
</pre>

<pre>import javax.microedition.lcdui.*;
import javax.microedition.media.MediaException;
import javax.microedition.media.control.VideoControl;

public class CameraCanvas extends Canvas {
private CameraMidlet midlet;

public CameraCanvas(CameraMidlet midlet, VideoControl videoControl) {
int width = getWidth();
int height = getHeight();
this.midlet = midlet;

videoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, this);
try {
videoControl.setDisplayLocation(2, 2);
videoControl.setDisplaySize(width - 4, height - 4);
} catch (MediaException me) {}
videoControl.setVisible(true);
}

public void paint(Graphics g) {
int width = getWidth();
int height = getHeight();

g.setColor(0x00ff00);
g.drawRect(0, 0, width - 1, height - 1);
g.drawRect(1, 1, width - 3, height - 3);
}
}

</pre>

CameraMidlet - Revision history

Deprimer at 10:56, 8 February 2007