audioMasterUpdateDisplay should be called on the UI thread

General JUCE discussion
1

audioMasterUpdateDisplay should be called on the UI thread. Or else Ableton Live ignores it and won’t update the GUI.

2

What are you doing that isn’t being picked up? I’ve just thrown together a test VST which changes the program name randomly and calls AudioProcessor::updateHostDisplay() (which will call through to JuceVSTWrapper::audioProcessorChanged() and Vst2::audioMasterUpdateDisplay) on the audio thread and the change is being picked up and displayed in Live. This is on macOS using Live 10.

3

The program name. I’m testing on Windows with the latest beta of Live.

4

I see the same issue on macOS. 10.1.9b5

Here is a video of the issue:

Here is the code:

5

Ah ok, I was testing this by calling updateHostDisplay() from the audio thread which works. I wasn’t testing with background threads. Should be sorted in this commit.

1 Like
6

Thanks

7

What about VST3? AU? AAX? Do they maybe suffer from similar issues?