farmes of video stream

[sou]

Hi All...
I want to Know the idea which is done in code in mosquito program ...I mean the idea to make the video stream of camera behind and everything including the mosquito in front???
actually I need any idea to make video stream of camera behind and want any object in front it..!!!
thanks

[DevelopmentTeam]

Hi All...
I want to Know the idea which is done in code in mosquito program ...I mean the idea to make the video stream of camera behind and everything including the mosquito in front???
actually I need any idea to make video stream of camera behind and want any object in front it..!!!
thanks

From your post, I can understand that mosquito program is some app that shows the camera output in the screen and displays a mosquito in front of the screen which seems like the mosquito is really flying in front of the camera.

[sou]

yes I meant that... I want to know how that done by java code...or if any one can give me the source code of this application??!!

[sou]

Hi All
Can I access the frames of camera video stream one by one and draw over them ???....i know we can do that by C programing language but i want to Know if Ican do that by j2me???
I here that there is class called Background ....can any one tell me about this class???

thanks

[DevelopmentTeam]

Code: Select all

p = Manager.createPlayer("capture://video");
p.realize();
rc = (RecordControl) p.getControl("RecordControl");
videoControl = (VideoControl) (p.getControl("VideoControl"));
videoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, this);
videoControl.setVisible(true);

int x = (getWidth() - videoControl.getDisplayWidth()) >> 1;
int y = (getHeight() - videoControl.getDisplayHeight()) >> 1;
videoControl.setDisplayLocation(x, y);

rc.setRecordStream(baos);
p.prefetch();

rc.startRecord();
p.start();


You can use this code to show the video on the canvas and then you can draw over it using the paint function

[sou]

I wrote this code in Canvas constructor and create the object from canvas class in snapper class
it throw NullPointerException...
I dont know what is the problem .....can you help me ??

sorry for bother ...thanks alot for your help



=====================================================================
public class CameraCanvas
extends Canvas {
private SnapperMIDlet mSnapperMIDlet;
private Player p;
public VideoControl videoControl ;
public RecordControl rc;
private OutputStream baos;

public CameraCanvas()
{
try {

p = Manager.createPlayer("capture://video");
p.realize();
rc = (RecordControl) p.getControl("RecordControl");
videoControl = (VideoControl) (p.getControl("VideoControl"));
videoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, this);
videoControl.setVisible(true);

int x = (getWidth() - videoControl.getDisplayWidth()) >> 1;
int y = (getHeight() - videoControl.getDisplayHeight()) >> 1;
videoControl.setDisplayLocation(x, y);

rc.setRecordStream(baos);
p.prefetch();

rc.startRecord();
p.start();

} catch (IOException ex) {
ex.printStackTrace();
} catch (MediaException ex) {
ex.printStackTrace();
}

[DevelopmentTeam]

You have not initialized the variable 'baos'

[sou]

sorry....I dont know how to initialize the outputstream variable in my case????

[DevelopmentTeam]

Code: Select all

public class CameraCanvas
extends Canvas {
private SnapperMIDlet mSnapperMIDlet;
private Player p;
public VideoControl videoControl ;
public RecordControl rc;
ByteArrayOutputStream baos = new ByteArrayOutputStream();

public CameraCanvas()
{
try {

p = Manager.createPlayer("capture://video");
p.realize();
rc = (RecordControl) p.getControl("RecordControl");
videoControl = (VideoControl) (p.getControl("VideoControl"));
videoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, this);
videoControl.setVisible(true);

int x = (getWidth() - videoControl.getDisplayWidth()) >> 1;
int y = (getHeight() - videoControl.getDisplayHeight()) >> 1;
videoControl.setDisplayLocation(x, y);

rc.setRecordStream(baos);
p.prefetch();

rc.startRecord();
p.start();

} catch (IOException ex) {
ex.printStackTrace();
} catch (MediaException ex) {
ex.printStackTrace();
}

You can use this code

[sou]

I tried it but it still not working..the video strem still over the frame..the difference is dimensions of canvas has minimized
?But Really ...thank you for your help

[DevelopmentTeam]

you r welcome. keep posting your doubts...