Re: Problems in creating aggregate device
Re: Problems in creating aggregate device
- Subject: Re: Problems in creating aggregate device
- From: Jeff Moore <email@hidden>
- Date: Fri, 22 May 2009 11:10:25 -0700
First off, make sure you are running on 10.5.7. There were a number of
fixes to the aggregate device support in that release - several of
which addressed issues with creation and editing.
At any rate, there really isn't anything you can do from your own
process to detect what is going on in the AMS process with respect to
the composition of an aggregate device.
Finally, it is possible that you are running into some kind of bug in
the aggregate device support. So be sure to file a bug report for us
to look at.
On May 22, 2009, at 6:10 AM, Philip Lukidis wrote:
I am trying to programmatically create an aggregate device, and for
the most part, it works. Sometimes, however, the coreaudio API
calls succeed, but in the audio-midi tab, the aggregate device has 0
inputs and 0 outputs. I would like to be able to detect this,
delete the aggregate audio device, and try again. However, I cannot
detect this condition myself. Hallab cannot detect it either, for
it displays the correct (non-zero) number of input and output
channels. When I try to use the
kAudioDevicePropertyStreamConfiguration property and count the
number of channels, I always get the correct number.
So, can anyone tell me how else I can count the number of available
inputs and outputs? The audio/midi properties tab gets it right,
and I would like to be able to do the same.
--
Jeff Moore
Core Audio
Apple
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