H Oli I don’t know if this is related. But..
I have noticed a similar issue with JUCE and AUv3 when the plugin first loads. There is some kind of thread conflict if the plugin and/or its editor tries to notify the host that parameters have changed, i.e. in JUCE if setStateInformation() calls setValueNotifyingHost() during the plugin startup phase. Sorry I haven’t been able to figure out why or what that translates to in the AU SDK as debugging AUv3 is very hard going. So, I’m currently switching all my parameter handling to use a polling model. Massive refactor…. Cheers peter ________________________________ From: Oliver Larkin via Coreaudio-api <coreaudio-api@lists.apple.com> Sent: Friday, January 19, 2024 10:38:42 PM To: CoreAudio API <coreaudio-api@lists.apple.com> Subject: Auval real time safety check Dear Core Audio folks, I've been experimenting with the relatively new -real-time-safety flag on auval. When I try and validate FilterDemoV3GenericUI (macOS) from this repo https://github.com/apple/AudioUnit-Examples auval -v aufx fltg Demo -real-time-safety -stress 10 > filterdemo-realtimesafety-test.txt I get a bunch of violations, the violations seem to relate to objc_msgSend() but it looks like they might be in the AUv3 hosting code rather than the plug-in itself. Here is the output of the above command: https://gist.github.com/olilarkin/98c87ae63485ea2c8fdf0f1ec3ecd1d0 I get the same violations when testing iPlug2 AUv3s and I developed the wrapper based on the apple sample code. Anyone know if this is fixable? Thanks, Oli
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