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Using rotary encoders etc.

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Using rotary encoders etc. Chalisque 18 Apr 16:17
  Using rotary encoders etc. Casey Connor 20 Apr 18:43
Chalisque
2017-04-18 16:17:26 UTC (over 7 years ago)
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Using rotary encoders etc.

Something which has always been a frustration is that, generally, MIDI control surfaces are thought of as a music-only thing, to some degree.

What I'd love to be able to easily do in GIMP, is to plug in, e.g. a control surface like a Behringer BCR2000 (large number of rotary encoders), and configure it so that I can change e.g. colours or brush sizes by twiddle knobs on the controller. More generally, a way that I can send messages to GIMP from anywhere to do things like changing brush size. From GIMP's end, all you really need is a generic 'numerical event' functionality, and then separate daemons which listen to other events, and send appropriate messages to GIMP.

Casey Connor
2017-04-20 18:43:57 UTC (over 7 years ago)

Using rotary encoders etc.

What I'd love to be able to easily do in GIMP, is to plug in, e.g. a control surface like a Behringer BCR2000 (large number of rotary encoders), and configure it so that I can change e.g. colours or brush sizes by twiddle knobs on the controller.

YES! Hold the phone, though, have you seen this? https://www.gimp.org/unix/howtos/gimp-midi.html

Maybe it's not as simple as you were hoping for. (It's also an old page, not sure what the current state of affairs is.)

More generally, a way that I can send messages to GIMP from anywhere to do things like changing brush size. From GIMP's end, all you really need is a generic 'numerical event' functionality, and then separate daemons which listen to other events, and send appropriate messages to GIMP.

Could GIMPs scripting interface be used in this way? I.e. could a third party whip up a go-between that translated MIDI events into python API calls, etc?

In this thread

(2012) Alexandre Prkoudine says "We just need to patch GIMP to support JACK and Jack Session" -- it appears this stuff has been thought about. I've only googled searched for 30 seconds... but thanks for the idea. My tablet is not performing as I'd hoped (on linux, due to lack of OS support) so I'm looking for easy ways to change brush size, zoom, etc.

-c