Re: Trouble setting sub device list, with a private aggregate device (on Tiger)
Re: Trouble setting sub device list, with a private aggregate device (on Tiger)
- Subject: Re: Trouble setting sub device list, with a private aggregate device (on Tiger)
- From: Jeff Moore <email@hidden>
- Date: Tue, 27 Oct 2009 09:11:46 -0700
Yes. It's always a good idea to filter the devices to be sure they can
be aggregated before trying to put them in an aggregate. The HAL
should be fine even if you don't. It should just ignore any non-
aggregatable devices.
That said, the general criteria for devices that can be aggregated is
that the owning plug-in of the device is the IOAudio plug-in (aka the
plug-in with the bundle ID of "com.apple.audio.CoreAudio") and that
the object's class is kAudioDeviceClassID.
On Oct 27, 2009, at 1:59 AM, Stéphane Letz wrote:
Another question : I guess it does not make really sense to
"aggregate" devices that are themselves... aggregate devices, so I
guess we should check to be sure to aggregate only "real" devices
right?
--
Jeff Moore
Core Audio
Apple
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