just how stable is kMIDIPropertyUniqueID ?
just how stable is kMIDIPropertyUniqueID ?
- Subject: just how stable is kMIDIPropertyUniqueID ?
- From: "Ross Bencina" <email@hidden>
- Date: Fri, 31 Jul 2009 17:12:14 +1000
Hi Guys
There was a related thread a while ago:
Re: Is the kMIDIPropertyUniqueID the same between reboots?
http://lists.apple.com/archives/Coreaudio-api/2004/Mar/msg00049.html
But I have a few more specific questions about kMIDIPropertyUniqueID:
If a device has two unnamed endpoints with unnamed entities, will the
endpoint IDs be stable accross reboots/device connections? The Akai MPD24
driver seems to fall into this category and I'm not yet sure how to safely
differentiate between the endpoints. Are the order of entities within an
device, and endpoints within an entity guaranteed to be stable?
If a MIDI device is connected to a different USB port / through a different
hub, will its kMIDIPropertyUniqueID be the same?
What about if two identical MIDI devices are then reconnected through
different ports/hubs?
Is device order (for the MIDIGetDevice collection) stable for a given
USB/Firewire topology? or does it depend on connect/reconnect ordering?
Thanks!
Ross.
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