PSA: Don't update to iOS 12.4 if you use apps in AB output slot or IAA apps that use the mic.
https://forum.audiob.us/discussion/34030/urgent-psa-hold-off-updating-to-ios-12-4-if-you-use-apps-in-output-slot-in-audiobus

FilterPort troubles

Hey guys,
I'm new to the Audiobus SDK and I'm having trouble getting my filter port working. I have input and output ports both working with the AudioUnit Wrapper. When when I connect a filter port to the same AudioUnit Wrapper, audio drops out entirely. I think the issue may lie inside of my filterPort's process block, because there is nothing in it.... I don't need to call ABFilterPortGetOutput right?

I provided a clientFormat, so shouldn't the filterPort just override what is coming in through the mic, for the input source audio, and take the audio that should go out to speakers, and send it down the line to the output App??? Does my filterPort process block need anything in it?

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