Re: How to uniquely identify audio device
Re: How to uniquely identify audio device
- Subject: Re: How to uniquely identify audio device
- From: Murray Jason <email@hidden>
- Date: Fri, 21 Dec 2007 00:08:35 -0800
Date: Thu, 20 Dec 2007 11:47:50 -0800
From: Jeff Moore <email@hidden>
Subject: Re: How to uniquely identify audio device
To: CoreAudio API <email@hidden>
Message-ID: <email@hidden>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Odd. My version of <CoreAudio/AudioHardware.h> says:
@constant kAudioDevicePropertyTransportType
A UInt32 whose value indicates how the
AudioDevice is connected to the CPU.
Constants for some of the values for this
property can be found in
<IOKit/audio/IOAudioTypes.h>.
The Tiger and Leopard versions of this header file do indeed provide a
complete sentence there... but the document that Shaun cites does have
missing text. Thanks for pointing out the problem!
-murray
On Dec 20, 2007, at 11:14 AM, Lorenzo Thurman wrote:
Shaun Wexler wrote:
On Dec 20, 2007, at 10:28 AM, Lorenzo Thurman wrote:
I have just one followup question on this topic:
How do I identify which device is the built-in audio Apple
hardware? There don't appear to be any methods that would tell me
that a particular piece of hardware is the built-in hardware. By
the way, I'm looking at this page here as it seems most relevant
to what I'm doing:
http://tinyurl.com/3d4s6n
Is there somewhere else I need to look? Is there sample code that
might help?
TIA
Examine the device's Transport Type.
Thanks for the reply. I'll look into this later, but I guess I found
one of those occasional documentation bugs:
"kAudioDevicePropertyTransportType
A UInt32 whose value indicates how the AudioDevice is connected
to the CPU. Constants for some of the values for this property can
be found in ."
I guess I can find the constants for the property somewhere in one
of the header files.
--
Jeff Moore
Core Audio
Apple
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