Where is patch time derived from? It doesn't seem to be synced with CFAbsoluteTimeGetCurrent().
It depends on how the composition is rendered since the client using the composition is responsible for specifying the render time, but typically it starts at 0 for the first frame and progresses afterwards at the same pace as "real time"
Most players will use CFAbsoluteTimeGetCurrent() to compute the evolution of the composition time, so there should be no drifting between System Time and the composition time.
So, to keep an external timer that doesn't drift relative to the composition's clock, which time source should I use? (obviously not CFAbsoluteTimeGetCurrent())
If you want your timer to be independent of how the composition is played, System time is the way to go.
________________________________ Pierre-Olivier Latour - [EMAIL PROTECTED] Technologist - Apple, Inc. _______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
