CODEWITHSUNDEEP
c++macosdriverkitmacos-system-extension
tuple_cat
tuple_cat

Reputation: 1340

How to use IOUserAudioBooleanControl from AudioDriverKit

I am trying to add an output mute to an AudioDriverKit driver.

I create the control like this:

ivars->m_output_mute_control = IOUserAudioBooleanControl::Create( in_driver, true, true, IOUserAudioObjectPropertyElementMain,
IOUserAudioObjectPropertyScope::Output, IOUserAudioClassID::MuteControl);

The Mute button in Audio Midi Setup starts off as muted, just like I specified in the third parameter, but when it is clicked, the state does not change. It stays muted (See screenshot).
Do I need to publish the new state in some way?

enter image description here

Upvotes: 1

Views: 33

Answers (0)

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