how to write a new display output driver?

[Dahrkael]

I have some Yeelight bulbs in my living room and I would like to output to them, but I don't see any documentation on how to write a new display (or how the existing ones work exactly).
Yeelight music mode works by telling the bulb to connect to a TCP server, which then will send json commands at whatever rate.
My theory is that I can manage the bulbs with any of the available external programs and point them to connect to colorchord (assuming I can run a TCP server inside somewhere), then just spit some hardcoded json sprintf'd with the required brightness and color values.

does that make sense? is it possible? any hints?
thanks

[cnlohr]

You could copy-and-paste DisplayNetwork, and modify it to your needs. It has an example UDP client, and making a TCP server wouldn't be bad. As long as the JSON is cleanly formatted it should be pretty easy to generate with some sprintfs.