AU / AUv3 Wrappers are never saving the full state of a plugin

[t0m]

I’m trying to think through the consequences of this, but I’m not getting much help from the Apple docs.

There’s this thread from 10 years ago which prompted the getCurrentProgramStateInformation behaviour

AU presets load-save problem + fix

Hi Jules, the audiounit wrapper has an error loading and saving presets since the changes for supporting both presets and banks. I am using 1.44 but I assume this is still the same for juce 1.45. Since AU saves individual presets and not banks the wrapper methods should be changed as follows: ComponentResult SaveState (CFPropertyListRef* outData) { ComponentResult err = AUMIDIEffectBase::SaveState (outData); if (err != noErr) return err; jassert (CFGetTypeID (*outData) == …

so I suspect the quick fix might have broken more than just backwards compatibility. @kyriacos can you remember what the issue was? I’ll put together some more complex preset loading tests tomorrow.