AudioUnits v3 OS X: How AU PlugIn may detect that AU Host did close window.

Hello,


In OS X SDK 10.11 

AUViewController.viewWillDisappear()
not called when AU Host closes the PlugIn window. It called one time before PlugIn unloading.

How then AudioUnit may know that AU Host did close PlugIn window and AudioUnit view may suspend drawing calls in custom views?


TL;DR

I have a AudioUnit v3 PlugIn with Volume meter. Volume meter draws level of audio signal retrieved from DSP kernel. It refreshes itself in sync with 

CVDisplayLink
callbacks.


AudioUnit PlugIn does not own window (

NSWindow
) as it provided by SDK. AudioUnit PlugIn also have no direct access to AU Host PlugIn window (
NSWindow
) and its controller as they on other side of XPC infrastructure. From other side AU Host does not have direct access to AudioUnit PlugIn as it on other side of XPC infrastructure.


I need to know when AU Host did close PlugIn window to stop 

CVDisplayLink
on AudioUnit side until AU Host will open PlugIn window again. How to achieve this?


Thanks!

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Vlad Gorlov
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Replies

Created bugreport 33202311 "AUv3: Subclass of AUViewController receives NSWindow.didUpdateNotification while NSWindow.willCloseNotification is not received."

Posted by
Vlad Gorlov
Up vote reply of Vlad Gorlov Down vote reply of Vlad Gorlov

  • Do you have any status about the issue ?

    Also reported via FB12145974, and I've just created FB13410524.

    Get the complete feedback created by user NikoloziApps here

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