Heterotopia of a nerd nouveau
libdc1394 is a high-performance library to control firewire cameras that conform to the DCAM or IIDC protocols. It supports Apple's external iSight camera, too (but not the built-in ones, since they are USB-based).
The library has been Mac-compatible for a while now, but I couldn't find a universal framework build online, so I rolled my own one and thought I'd share it with other Mac developers interested in working with firewire cameras.
You can embed the framework into your own universal application. Additionally, the download contains the XCode project, so that you can compile your own builds or update to new versions of libdc1394 easily in the future.