DeferredRenderer and Varispeed AU questions
DeferredRenderer and Varispeed AU questions
- Subject: DeferredRenderer and Varispeed AU questions
- From: Ethan Funk <email@hidden>
- Date: Tue, 15 Aug 2006 19:01:08 -0700
| Two quick questions, first regarding the Varispeed AU:
Can I use the Varispeed AU to perform a fixed ration of decimation or interpolation? For example, if I ask it for 1280 frames, and set it kVarispeedParam_PlaybackRate property to 1.25 will it always pull 1024 frames from it's source? If so, what happens if I change kVarispeedParam_PlaybackRate before I ask it to render again? Will it perform a pull on it's source with a request for a new number of frames equal to the new ratio?
Second question regarding DeferredRenderer AU:
When kAudioUnitProperty_DeferredRendererPullSize is larger then a render request, how does the AU behave? I assume it returns the requested samples and stores the extra samples for next time, but at some point, it will be ahead a full kAudioUnitProperty_DeferredRendererPullSize number of frames. Does it just skip a pull on it's source at this point?
Thanks, Ethan... |
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