Function colorspace_desc 

pub fn colorspace_desc(fullcolor: bool, full_range: bool) -> &'static str

The Colorspace: field of a stream log line, from what the session negotiated rather than what was asked for: a hardware encoder can refuse 4:4:4, software 4:4:4 of x264’s kind carries full range, and a device converting in fixed function picks the range itself. Shared so the X11 and Wayland logs describe an identical session identically.