The usual cause for this sort of error is that an IOProc hasn't be
added with AudioDeviceAddIOProc prior to being started with
AudioDeviceStart. I presume that you are using an instance of AUHAL to
handle the IO, so I'm somewhat puzzled how something like this might
have come up.
Perhaps you could explain a bit more about the problem?
On Mar 22, 2007, at 6:44 PM, Christopher Ashworth wrote:
What are the reasons that AUGraphStart might return
kAudioHardwareIllegalOperationError?
--
Jeff Moore
Core Audio
Apple
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