Re: automating device aggregation
Re: automating device aggregation
- Subject: Re: automating device aggregation
- From: Jeff Moore <email@hidden>
- Date: Wed, 1 Jun 2005 17:19:15 -0700
Creating a new aggregate device requires using the new AudioObject
APIs and goes something like this:
1) Locate the base plug-in using
kAudioHardwarePropertyPlugInForBundleID. It has a bundle ID of
"com.apple.audio.CoreAudio".
2) Create a CFDictionary that describes the aggregate device you want
to create. The keys for the dictionary are in the Aggregate Device
section of <CoreAudio/AudioHardware.h>. Be sure too create a unique UID.
3) Tell the base plug-in to create the aggregate device using
kAudioPlugInCreateAggregateDevice.
4) Presuming success, use kAudioHardwarePropertyDeviceForUID to get
the AudioDeviceID of the newly created aggregate device.
That's pretty much it. Let me know if you have any specific questions
about the process.
On Jun 1, 2005, at 4:31 PM, Kevin Vanwulpen wrote:
Hi,
I would like to aggregate 2 devices which use a different driver
and do that for the end-user automatically.
In other words I want to avoid the most basic end user having to go
into the Audio Device Aggregator (even tough it’s very easy to use).
I did find some constants and enums related to this in
AudioHardware.h but am now wondering what my application should do
or can only a HAL plugin create a new AudioAggregateDevice?
Kevin
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--
Jeff Moore
Core Audio
Apple
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