Is there anything in the AudioUnit API that lets you query for a list of,
or just the maximum, supported bitdepth for an AU?
I'm working on an AUGraph to preview audio from my own vectors*
(my render proc for input) -> FxAudioUnit -> MatrixMixerAudioUnit ->
SystemOutputAudioUnit
I'm muddled over how to query the FxAudioUnit (it won't be the same unit
every time, the user can choose from their plugins) in terms of "capable
settings", rather than just "current settings".
In order for me to intelligently choose a bitdepth, I want to know what the
maximum of each unit is. But when I check the ASBD with
AudioUnitGetProperty, it's showing me 32bit for everything... I thought
Apple's stock Filters supported 64Bit (maybe I was confused over 64bit
audio vs 64bit code).
Is the correct way to do this, to try setting the ASBD with
AudioUnitSetProperty to 64Bit, and just seeing if it fails? That seems a
bit ugly.
A simple question, but I can't find a satisfactory answer in the Apple
Docs, or duckducking.
Thanks!
*yes, that's the arrangement I used after discussing it on the list a
couple months ago.
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