The drama continues….
In Tech Note TN2247, Apple claims an audio component is sandbox-safe if it does
not require any access whatsoever to the file system or network, among other
things. It gives a temporary workaround for older audio unit types, where one
would substitute the key ’sandboxSafe' in the plist with
<!-- This AU is not sandbox safe so describe it's resource usage -->
However, the above keys do not work with AUv3 audio components! Furthermore, in
order to host them, the enclosing app needs to declare in its entitlements the
All the above seem to be meant for macOS only, and apparently the temporary
exceptions are gone with Sierra. So is there any hope for an iOS AUv3 to access
files from its own sandbox? I am not even asking for the ubiquity container, or
network access, which would be great, but how is this such a tremendous threat
that one cannot load a simple audio file the user specifies into an application
whose sole purpose is to make music?
Any help would be greatly appreciated!
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