Feeding PngStream to openCV

Hey, I've been using your Ar-Drone API and have been absolutely loving it - thank you so much! 

So far I've been able to setup a PNGstream that is displayed on a web server. A roadblock I've run into is feeding those images I receive from the drone, into openCV. Do you have any idea of how I can convert the image data into an OpenCV image?

Thanks In Advance!
- Zaman