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Re: AUGraphStart returning kAudioHardwareIllegalOperationError
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Re: AUGraphStart returning kAudioHardwareIllegalOperationError


  • Subject: Re: AUGraphStart returning kAudioHardwareIllegalOperationError
  • From: Jeff Moore <email@hidden>
  • Date: Thu, 22 Mar 2007 18:59:06 -0700

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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 >AUGraphStart returning kAudioHardwareIllegalOperationError (From: Christopher Ashworth <email@hidden>)

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