Re: Controling CoreAudio device volume
Re: Controling CoreAudio device volume
- Subject: Re: Controling CoreAudio device volume
- From: Jeff Moore <email@hidden>
- Date: Mon, 4 Feb 2008 10:58:57 -0800
The "rules" are (and I'm not being facetious), if the device has a
control, you can use it. If it doesn't have one, you can't.
AudioObjectHasProperty() is your guide. This is true of every kind of
device the HAL supports.
On Feb 4, 2008, at 2:05 AM, Stéphane Letz wrote:
We see that some audio devices (like aggregate devices combining a
input only and output only device on a Mac Pro intel) loose the
ability to be volume controled. What are the "rules" that define how
the volume of a device can be controled, depending of the device
type: built-in, aggregate device, user-land device ?
--
Jeff Moore
Core Audio
Apple
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