Apple

Hi Christian,

Thanks for the reply.

Yes, I had found the functions

AUBase::CallHostMusicalTimeLocation

AUBase::CallHostBeatAndTempo

AUBase::CallHostTransportState

What I meant in my question however - is there a way to get callbacks/notifications invoked in my Audio Unit every time when beat/bar changes, or when the host playback starts/stops (for instance, when the user clicks the Play button in MainStage). Or do I have to implement tracking of these events manually in my render function by checking if and how the beat value changed?

Manual tracking sounds like a tedious work though. For instance, I would like to have a function called every time a metronome ticks (i.e., a beat changes).

References:
	>AudioUnit - notify on hosts beat and bar changes (From: Nick <email@hidden>)
	>Re: AudioUnit - notify on hosts beat and bar changes (From: Christian Rober <email@hidden>)
	>Re: AudioUnit - notify on hosts beat and bar changes (From: Nick <email@hidden>)