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RE: IOAudioEngine::clipOutputSamples cannot be called
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RE: IOAudioEngine::clipOutputSamples cannot be called

  • Subject: RE: IOAudioEngine::clipOutputSamples cannot be called
  • From: "David Tan" <email@hidden>
  • Date: Tue, 2 Dec 2008 17:58:24 +0800

Hi All,

 

Actually I’m developing a FireWire audio driver.

As my understanding, the clipOutputSamples() should be called after the performAudioStart() be called no matter if the DCL program is running or not.

Is that correct?

 

BTW, I use iTunes to play music and the progress cannot step forwards. I think that clipOutputSamples() cannot be called explains it. Is that correct?

 

Best Regards,

David Tan,

Software Engineer,

Dextrys Co., Ltd.

From: coreaudio-api-bounces+david.tan=email@hidden [mailto:coreaudio-api-bounces+david.tan=email@hidden] On Behalf Of David Tan
Sent: Tuesday, December 02, 2008 4:38 PM
To: CoreAudio-API Mailing List
Subject: IOAudioEngine::clipOutputSamples cannot be called

 

Hi Apple,

 

I have asked this question two weeks before and Jeff kindly gave me some confirmation that the overridden of it is feasible.

But unfortunately I’m still blocked at this issue.

 

Now my question is: is it possibly caused by incorrect setup of output IOAudioStream?

Although I can see my device on Sound Preference Pane and HALLab device window, I’m suspicious of something incorrect in it.

BTW, my audio engine creates one input stream and one output stream respectively.

 

Thanks a lot!

 

Best Regards,

David Tan,

Software Engineer,
Dextrys Co., Ltd.

 

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