I doubt you could upload processing program to it, but it could be possible to control the device with processing program. Now there can be a huge difference between possibility and feasibility. And in this case it’s probably huge. I mean it could be possible, but is it sensible to put a lot of effort to make it work. Too many unknowns to answer.
That code could be anything. Without specifications impossible to say. Perhaps something related to ILDA Software free download for creating laser shows | Pangolin Laser Systems. Anyways, sure you can create a file like that with processing (or almost any programming language) if you can find specification for the code.
So first task should be to figure out the specification. You might find something from device documentation or from ILDA. Go and google.
This is an interesting case, so if you find anything, please report back. I could be tempted to help you with coding.