mmm I did not notice those native calls...
Anyway, I already set up an environment and built CHDK from sources.
By doing that, now I can read the camera sensor raw data in real time and also I can write into the screen. It would be easier if I could do that only with scripts though.
By the way, how powerful is the chip inside these cameras?, is it possible to make some custom image processing in there in real time?
Excellent work guys... CHDK is awesome.