capture camera image into texture

Hi.

can someone please point me on the right direction on how to capture image from camera and turn it into texture.

i am currently running under IOS , and capturing image using the function:

const QCAR::Image* GetCameraImage(QCAR::State& state, QCAR::PIXEL_FORMAT format)

{

    QCAR::Frame frame = state.getFrame();

    for (int i = 0; i < frame.getNumImages(); i++)

    {

        const QCAR::Image* image = frame.getImage(i);

        if (image->getFormat() == format)

        {

            return image;

        }

    }

    return NULL;

}

the format i am currently catching YUV.

thanks

ozi