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When did AUFilePlayer finish playing?


I'm using a number of AUFilePlayers to provide data a mixer unit. Since the number of sounds I need to play is indeterminate, I need some kind of recycling mechanism, so I want to know when a particular AUFilePlayer is done.

I was attracted by the ScheduledAudioFileRegion callback mechanism, since it sounded like it might be just the thing. But now I see that the callback seems to be more of an indicator that the file is done with (that is, the bytes are buffered and ready for rendering).

Is there a straightforward way of being notified when an AUFilePlayer (or perhaps any generator audio unit generically) is done generating meaningful audio? Or do I have to keep track of this myself based on the length of the regions I'm setting on the file player?

Thanks for your help,

Daniel

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