I want to draw some overlay graphics on top of a live camera viewfinder. The easiest method with "StartViewFinderBitmapsL" works fine but is really slow. Then since Symbian^3 there is a class "Ccamera::CCameraOverlay" which allows to load graphics on the viewfinder but I get a "Feature Not Supported" error on all devices (including the Nokia N8) so I suppose that it is not supported by any devices yet.
What alternative methods are possible? Is there a chance that an OpenGl based implementation is faster?