This issue could be seen when modifying the "OSC FmModSrc" parameter of
U-He Diva AU from the custom editor in the AudioPluginHost. The
parameter display in the generic parameter editor did not update
properly because the wrong parameter was marked as changed.
Previously, plugin views may be set to unexpected sizes by the host,
which could interrupt size updates due to scale factor changes. This
could leave the plugin view at an incorrect size.
To use this feature, derive your AudioProcessor from
VST3ClientExtensions and override getPluginHasMainInput() to return
false. The main input bus will then be designated as an Aux bus, rather
than a Main bus.
This is mainly useful for synth plugins like vocoders, which may need a
sidechain audio input, but which should replace all audio on the channel
with the output of the synth, rather than mixing with the audio input.
The AAX SDK already checks for truncated IDs internally. If any ID is
truncated, details will be written to Pro Tools' log file (you may need
to enable logging first). Search for "AAX_ASSERT" in the log to find
triggered assertions.
- Add AlertWindow::show() and showAsync() methods that take a MessageBoxOptions argument
- Add NativeMessageBox::show() and showAsync() methods that take a MessageBoxOptions argument
- Update the DialogsDemo to demonstrate the new methods
- Deprecate AlertWindow::showNativeDialogBox() in favour of the NativeMessageBox methods
- Pass button strings specified in MesssageBoxOptions to native dialog boxes correctly
- Use modern TaskDialog on Windows for the native dialog box where available
The old design had us checking isActive inside our audio callbacks, and
also modifying isActive from prepareToPlay(), and releaseResources(). To
avoid race conditions, and to ensure that isActive actually reflects the
activation state of our plugin, we need to lock in these places. If we
don't lock, there's a chance that other threads will observe isActive to
be true while the plugin is not actually active (for example).
If you're not convinced, imagine this scenario:
- The message thread calls prepareToPlay. The plugin is activated.
- The audio thread starts calling processBlock, and gets as far as the
isActive check. The plugin appears active, so we continue into
processBlock.
- At the same time, the message thread calls releaseResources(). The
processBlock call is still in progress, but the message thread is
simultaneously making calls to setProcessing() and setActive(), which
is a race.
Normally, it'd be up to the host of the AudioProcessor to ensure that
prepareToPlay() isn't called at the same time as processBlock().
However, VST3 plugins can request a restart at any time from the UI
thread, requiring us to call prepareToPlay() even while processBlock()
is running.
Previously, IEditController parameter indices were being used to index
into the AudioProcessor parameter array, but these parameter indices are
not guaranteed to point to the same parameter (parameter groups may
cause reordering on JUCE's side). Now, we use the IEditController
indices universally.
Previously, the following plugins were causing issues when hosting their
editors:
- Softube plugins. I used Saturation Knob for testing, which crashed when
deleting the temporary parent view.
- KORG Gadget series, which displayed a black screen after the temporary parent
view was deleted.
- FabFilter Pro-C, which displayed at the wrong scale when opened on a
retina display.
