On Mon, Mar 7, 2016 at 1:32 PM, Charles Constant <[email protected]> wrote:
> 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). > > There's some deep confuson here. 64 bit AU's are about CPU architecture, not data format. More or less all AU's handle 32 bit floating point audio data, whether their CPU architecture is 32 or 64 bit.
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