[linux-audio-dev] Midi/OSC help - Continuous controllers

Olivier Guilyardi ml at xung.org
Fri Jun 24 17:13:36 UTC 2005


Paul Davis wrote:
>>Actually, I just started from the following assumption : a midi hardware 
>>controller is a input device, among keyboard, mouse and others.
> 
> 
> the problem is that its also an output device, for some midi h/w. add
> this into the situation, and you start to realize that the midi h/w is
> actually a "GUI" just like the one on the screen. forcing one GUI to
> be mediated by another seems odd.

Okay, let me try to improve this...

Assumption v0.2 : a midi hardware controller is a set of input and output 
devices, and is in its nature identical to the more conventional monitor, 
keyboard and mouse.

And because I like ascii diagrams, here is where this assumption drives me :

  +----------------+                  +--------------+       +--------------+
  | input & output | <----- X ------> | GUI Toolkit  |       | Application  |
  |    devices     | <---- Midi ----> | (gtk, etc..) | <---> | (MVC or not) |
  |                | <-- Whatever --> |              |       |              |
  +----------------+                  +--------------+       +--------------+

About configuration : there are tools to map keys to letters for a keyboard, so 
there could be tools to map knobs to controllers in case of a midi box.

This is all theoritical, but can it be considered false ?

--
   og




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