[Media_api] MAC dynamic ports

[Amit Itzkovich]

I'm porting my PortMidi application to MAC, and have just realized that in order for my app to communicate with other MIDI app's I'll need to dynamically create a MIDI source and destination endpoints (according to the CoreMIDI terminology).
I can create the source and destinations in my app code (outside portmidi) before portmidi starts, so that portmidi wouldn't have to change its static nature, but I'll need portmidi to recognize these MIDI sources/destinations and use them properly.

How complicated will it be to update PortMIDI to support that? 

Thanks!
Amit