Expose static function to build an ofxMidiMessage from a raw byte array

[damian0815]

Heya - I needed this for a realtime record/playback system in http://github.com/damian0815/kll

[danomatika]

It might make more sense to move this logic into ofxMidiMessage.

[danomatika]

I decided to move the parsing into ofxMidiMessage, so you can do the following:

ofxMidiMessage msg;
msg.fromBytes(bytes);

or even shorter:

ofxMidiMessage msg(bytes);