Yes, this works if you are only using audio output. I am using the input and output at the same time. If you do this, then you are restricted to using the default input and output devices.
— Dominic > On Sep 28, 2019, at 1:06 AM, Tamas Nagy <tamas.lov.n...@gmail.com> wrote: > > Hi Dominic, > > you can change the output to an AudioDeviceID on the AudioUnit of the > outputNode. > > OSStatus err = AudioUnitSetProperty([[audioEngine outputNode] audioUnit], > > kAudioOutputUnitProperty_CurrentDevice, > kAudioUnitScope_Global, > 0, > &deviceId, > sizeof(AudioDeviceID)); > > This works for us for years now. > > Hope this helps. > > Best, > Tamas > >> On 2019. Sep 28., at 2:56, Dominic Feira via Coreaudio-api >> <coreaudio-api@lists.apple.com <mailto:coreaudio-api@lists.apple.com>> wrote: >> >> For the record, DTS has confirmed that everything I have posted below is >> correct. AVAudioEngine can only be used with the default input and output >> devices. The fact that AVAudioEngine ever shipped for the Mac like this at >> all says a lot. >> >> — Dominic >> >>> I have been working with AVAudioEngine. >>> >>> By default the AVAudioEngine is using an aggregate audio device with the >>> default input/output as the subdevices. This makes sense so the entire >>> engine can run on a single clock. >>> >>> Is it possible to set the input and output devices to use something other >>> than the system?s default input and output? >>> >>> From experimentation, if I set the input or output to anything other than >>> an aggregate device it fails. If I change the input and output to use the >>> same aggregate device (that I created with non-default devices), it works. >>> However any time the default output or input of the system changes, the >>> engine?s input/output are set back to the aggregate device set up by core >>> audio that uses the default input/output, basically overriding what I told >>> the engine to do. >>> >>> I hope that I?m missing something obvious, but I think I have run into the >>> limits of this API. For an API that has been on the Mac for several years >>> it is very limited. >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Coreaudio-api mailing list (Coreaudio-api@lists.apple.com >> <mailto:Coreaudio-api@lists.apple.com>) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/coreaudio-api/tamas.lov.nagy%40gmail.com >> >> <https://lists.apple.com/mailman/options/coreaudio-api/tamas.lov.nagy%40gmail.com> >> >> This email sent to tamas.lov.n...@gmail.com >
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