USB audio class - kIOAudioControlUsagePassThru implementation
USB audio class - kIOAudioControlUsagePassThru implementation
- Subject: USB audio class - kIOAudioControlUsagePassThru implementation
- From: Daniel Mack <email@hidden>
- Date: Mon, 10 May 2010 19:38:58 +0200
Hi,
I'm wondering how kIOAudioControlUsagePassThru controls are supposed to
be mapped into USB audio class compliant devices. The USB audio standard
(v2 in my case) does not describe this kind of control selector
specifically, so I would guess the only way is to define an extension
unit or to use mixer elements.
The AppleUSBAudioDriver seems to do other fancy things though, and I
didn't fully get my head around yet what it really looks for in the
descriptors. Can anyone shed some light maybe?
Thanks,
Daniel
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden