Don't think the company would want to release all the code publicly.
My client is a bank with private GitHub servers, so I assume their codescene is self hosted as well.
edit: Yep, there is an on-premise option: https://codescene.com/pricing/
To analyse Perforce, you setup an automated conversion to a read-only Git repo that you then point the analysis to.
Don't think the company would want to release all the code publicly.