How to list onboard camera?

[freeair7]

3G mobile phone usually has two cameras. My question is how to observe camera devices of Nokia device in J2ME application, then I can choose one for video capture.

Thanks for reply.

[ektasrv]

3G mobile phone usually has two cameras. My question is how to observe camera devices of Nokia device in J2ME application, then I can choose one for video capture.

Thanks for reply.

you have to use
Player p = Manager.createPlayer("capture://video");

Camera snapshot for pictures or video recording.

You can also use the following:
capture://devcam0 (for video recording and image capture) default cam
capture://devcam1 (second camera, if the device has two cameras) front cam

[r2j7]

Hello freeair7,

and welcome to Forum Nokia Discussion Boards!

The cameras on Nokia devices can be accessed by using Mobile Media API (MMAPI). More specifically:

When creating a MMAPI Player for audio or video capture, or specific capture, the locator URL must be used as a parameter to the createPlayer method of the Manager class. And in order to access a camera/cameras for the purpose, the following locators come in question:

capture://devcam0 (for video recording and image capture)
capture://devcam1 (second camera, if the device has two cameras)

More about usage of these in Forum Nokia Java Developer's Library:

Java Developer's Library 3.5 > Developer's Guides > Multimedia > Creating multimedia applications > Using the Mobile Media API > Recording sound and video

Furthermore on determining existing cameras by using these locators, you might want to check this code example on Forum Nokia Wiki:

CS001273 - Determining the number of cameras in Java ME

Regards,
r2j7

[ektasrv]

You can try System property - "camera.resolutions" to get the following:

camera.resolutions

A list of camera device sensor resolutions.

[locator_name] [width]x[height]

For example:

capture://devcam0 640x480
capture://devcam1 320x240

[freeair7]

You can try System property - "camera.resolutions" to get the following:

camera.resolutions

A list of camera device sensor resolutions.

[locator_name] [width]x[height]

For example:

capture://devcam0 640x480
capture://devcam1 320x240

I try it on Nokia X6, nothing is returned by System.getProperty("camera.resolutions")

[ektasrv]

I try it on Nokia X6, nothing is returned by System.getProperty("camera.resolutions")

To get number of Camera on the device - Try this type of codelet on X6

private int getNumOfCam() {
        int cam = 0;
 
        try {
            for( ; ; ++cam) {
                String locator = "capture://devcam" + Integer.toString(cam);
                Player player = Manager.createPlayer(locator);
                player.close();
            }
        }
        catch(MediaException mediaExc) {            
            return cam;
        }
        catch(Exception exc) {
            return 0;
        }
    }