Labeled MIDI controller values in Ardour

A while ago, I implemented MIDI patch, controller, and note name support for Ardour.

There was one thing missing from that work: labelled controller values. This is particularly useful for controllers that don't represent a continuous numeric parameter, but instead have a set of specific values. For example, the Moog Minitaur supports CC #86 to control the LFO sync clock division, but it's not obvious how a 0-127 number maps to a clock division. From the manual, we can learn that 61-67 is "1/4", 68-73 is "1/8 Dot", and so on.

Translate that information into standard MIDINameDocument format, and a few hours of hacking later... voila, Ardour displays something sensible when hovering over an automation point instead of a meaningless number.

If you want to add support for your MIDI device or program, my .midnam documents for the Moog Minitaur, MF-104M, and MF-108M, included in the Ardour distribution all contain examples of labelled values. It should be relatively obvious how to copy and modify these for other devices.