Hi Ariel, You should be able to get and set parameter value through AudioUnitGetParameter / AudioUnitSetParameter functions https://developer.apple.com/documentation/audiotoolbox/1440055-audiounitgetparameter https://developer.apple.com/documentation/audiotoolbox/1438454-audiounitsetparameter
> On 2 Jul 2020, at 04:18, Ariel Elkin via Coreaudio-api > <coreaudio-api@lists.apple.com> wrote: > > Hello folks, > > I have an AUAudioUnit subclass which I'm using to process the audio played > back by an AVPlayer instance. > > The approach is to create a MTAudioProcessingTapRef, make the audio unit > render within its MTAudioProcessingTapProcessCallback, and assign that tap as > the tapProcessor property of the AVMutableAudioMix of a AVPlayerItem. This is > pretty much Apple's reference implementation here: > https://developer.apple.com/documentation/avfoundation/avaudiomixinputparameters/1388578-audiotapprocessor > > <https://developer.apple.com/documentation/avfoundation/avaudiomixinputparameters/1388578-audiotapprocessor> > > The tap works as intended, and the AVPlayer's audio flows through my audio > unit's render callback. However, I initialise my audio unit with > AudioComponentInstanceNew, so it's of type AudioUnit, so it can't seemingly > expose the AUParameters properties it has as an AUAudioUnit. > > Does anyone have any ideas as to how I can control custom parameters of > AUAudioUnit subclasses that are instantiated via AudioComponentInstanceNew? > > Thanks > > Ariel > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Coreaudio-api mailing list (Coreaudio-api@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/coreaudio-api/markovic%40users.sourceforge.net > > This email sent to marko...@users.sourceforge.net
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