Is it possible to do audio output without using the AUGraph model?
Of course. Core Audio is a layered API. The ComplexPlayThrough code
works with our higher level APIs. However, as you move down the
stack, you have to take on more responsibility for doing the right
thing (which can be a lot of code to write). One of the advantages of
using the high level APIs is that a lot of this burden is handled for
you.
Is there a sample somewhere that actually does this ..
Have you looked in /Developer/Examples/CoreAudio? This is where our
SDK is installed. It contains many examples of doing various things
with our APIs. In your case, the DefaultOutputUnit project in the
SimpleSDK folder would be a good start. The AudioFileTools project
covers recording and play back with separate command line tools.
HALLab shows using the HAL (the lowest layer of the stack) for
various things like recording and playback.
--
Jeff Moore
Core Audio
Apple
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