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Question about Hog Mode
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Question about Hog Mode


  • Subject: Question about Hog Mode
  • From: "Stephen F. Booth" <email@hidden>
  • Date: Sat, 9 Jan 2010 09:04:10 -0800

I've been experimenting with hog mode lately and although I'm able to
take and release it, I'm not getting the results I expect. I think I
may have a fundamental misunderstanding of what hog mode is or how it
works.

My goal is to prevent sample rate changes on the output device from
any other app except my own when I am actively playing audio. I was
under the impression that I could achieve this with hog mode.

My setup is fairly simple- a vanilla AUGraph with a few AudioUnits for
DSP, using an output AU for rendering. I use a custom input callback
to feed the graph.

When I take hog mode, all audio output stops. My input callback is
still called, and my render notifications are called, so it looks like
audio is rendering.  However, nothing comes from the device.

What am I missing? I've read and searched, but to no avail.

Thanks,
Stephen
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