A long time, since I did not do any SW design. But would'nt it be possible to take over the according I-9000 camera sources from pawitp's CM9:
http://xdaforums.com/showthread.php?t=1592131
and compile those sources for I-9001?
THIS ^.
This is basically what the other dude told us on another forum category to do in order to make the camera work.
So, we have 2 developers now, maybe you can please look over it.