Customizing video output on hdmi port

Hi,
I am working on a project where I have to become an intermediate node (or process) between a projector and a laptop.

As for now, I am trying to control the video output stream sent on HDMI port to the projector. For this, I am searching for video drivers responsible for this but couldn't find it.

I need help as I don't have an exact idea of where to look, or even it is feasible or not. My initial goal is to become intermediate between my laptop and the projector.

Thank you.

Thread moved to New to Ubuntu a more appropriate sub-forum.