I'm proud to introduce my first ofx addon : ofxGem
It allows you to share pixels data (image) between Puredata/Gem and openFrameworks.
The code is largely inspired by Gem's pix_share_read and pix_share_write.
It has been only tested on Linux for now, but should work on OS X and Windows, since the pix_share* are working on some platforms.
It uses shared memory (RAM) segment, and it is very fast.
Feedback are welcome