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ComplexPlayThru sample & buffers
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ComplexPlayThru sample & buffers

  • Subject: ComplexPlayThru sample & buffers
  • From: Paul Fredlein <email@hidden>
  • Date: Fri, 25 Nov 2005 14:47:25 +1000
Hi,

I've been trying to understand the ComplexPlayThru sample code. I only wanted to use one buffer of a fixed size to record only x seconds of audio then play it back.

ComponentResult AudioUnitRender(
   AudioUnit                     ci,
   AudioUnitRenderActionFlags*   ioActionFlags,
   const AudioTimeStamp*         inTimeStamp,
   UInt32                        inOutputBusNumber,
   UInt32                        inNumberFrames,
   AudioBufferList*              ioData
)

Do I have to supply the number of frames to render or will it just stop once the buffer is full? Can I have only one buffer of the appropriate size or do I have to have multiple small buffer waiting in the queue? Or something... bit confused on the whole thing. (SimplePlayThru sample doesn't work on my Mac, I think it's because I only have a USB input device no Apple input device such as a microphone).

Any help or pointers on where to start appreciated.

Thanks,

Paul



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