I tried using Input / 127 * 2, which gives me “correct” values for 0 = -oo and 64 == 0dB, but moving the slider to 127 just gave me +6 dB. I had to drive up the multiplier to 8 instead of 2, in order to reach maximum level, but then the 0 dB level drifts down to cc values around 19 or so, which is unusable.
When using tha standard “Automatic (Range)” Mapping, I get correct mapping of CC values to volume, from 0 to (max). Looks like something is broken when feeding the output slider my calculated values, which ought to be 0…2. The mapping from calculated values to the output sliders seems off. I checked by using the formula Input / 1000 + 2 - this reliably ended up around +6 dB instead at (max). So: what is the numerical equivalent to (max) and how can I get Cantabile to map my values according to the MIDI control curve, as the Automatic mapping seems to do?
Next, I tried the reverse: used Output Gain as the source of the binding and tried to generate MIDI data from it:
This didn’t generate any MIDI data at all when moving the output gain slider. But when changing the Mapping to “Automatic (Range)”, I got wonderful MIDI data for CC11 from 0 to 127 when moving the output slider.
Next, a super-simple MIDI mapping: get input CC 11 from a pedal and output a simple mathematical calculation: Input / 2 - no output at all.
I even tried round(Input / 2) to make sure I created integer numbers, but nothing.
Something seems broken…