Handling pull-ups in a CoreAudio driver
Handling pull-ups in a CoreAudio driver
- Subject: Handling pull-ups in a CoreAudio driver
- From: Andrew White <email@hidden>
- Date: Thu, 06 Sep 2012 14:06:41 +1000
Scenario: CoreAudio driver running at given sample rate (say 48k). I'm
trying to support "pull-ups", eg running the device at an actual rate of
48k + 4.16%.
Under 10.6, it seems to be happy that the nominal and actual clock rate are
off by a little bit. Under 10.8, I get data errors every buffer pass.
I can't find any documentation that allows a CoreAudio driver to notify
CoreAudio that its 48k clock isn't actually at 48k. Does a mechanism
exist? How do I access it? What is the preferred solution?
Thanks
--
Andrew White
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