Re: IOProc never called after AudioDeviceStart
Re: IOProc never called after AudioDeviceStart
- Subject: Re: IOProc never called after AudioDeviceStart
- From: Mitch Jones <email@hidden>
- Date: Wed, 29 Oct 2008 18:40:15 -0700
On Oct 27, 2008, at 11:51 AM, Jeff Moore wrote:
If you aren't seeing any errors, and you are 100% positive that
there is no race here, then perhaps there are some other things at
play here.
Does this happen with all audio devices? If not, which devices does
it happen to and which doesn't it happen to?
The audio devices I've tried are Built-In Line Output and Built-in
Output on the Mac Pro and Built-in output on the Macbook Pro. Neither
of which produced sound. These are the only output devices I have.
Have you sampled your process to see what all the threads are doing?
You could have something else going on that is interfering with the
HAL's ability to field notifications from the driver. This usually
would show up as the process having an IO thread that is stuck
waiting for a notification or waiting for the device's first time
stamp.
I presume that would be IOA_SingleDevice::StartIOCycleTimingServices?
--
Mitch Jones
email@hidden
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