Re: Identification of IOAudioDevice from HAL client app
Re: Identification of IOAudioDevice from HAL client app
- Subject: Re: Identification of IOAudioDevice from HAL client app
- From: Shaun Wexler <email@hidden>
- Date: Mon, 11 Nov 2002 05:03:31 -0800
On 11/10/02 10:35 PM, "Bill Stewart" <email@hidden> wrote:
>
AMS uses the AudioHardware calls to get a list of the AudioDeviceID -
>
this is the object that you should use - there's nothing extra virtuous
>
about being an IOAudioDevice (in fact the reverse is the case):)
In Audio MIDI Setup, the "Selected Audio Device" pop-up button allows a user
to select a single named ~device~ which may be comprised of >1 AudioDeviceID
objects; the separate input and output AudioDeviceID's have been grouped
SOMEHOW into one menu item with their common DeviceName. The control's
ToolTip reads "Current Audio Device Being Examined", for reference. Am I
correct?
This is the functionality I want for my app, which I already had achieved by
my UID parsing method. I would like to know the 'Apple' way to group
AudioDeviceID together so they represent the actual physical hardware
device, as demonstrated in Audio MIDI Setup.app from Apple. Someone's got
to know... :)
Wouldn't this be a valid reason to add 1 or 2 public read-only properties to
the HAL client API?
--
Shaun Wexler
http://www.macfoh.com
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