Hello:
I have been studying the PhantomAudioDriver sample in order to write my own
audio driver.  I see that the timerFired (IOTimerEventSource) is simulating
a DMA interrupt.  When this "interrupt" occurs,  it means that the
currentBlock has been transferred.
I would like to do this from a userland application.  Any suggestions on how
I could do this?
I thought of sharing the outputBuffer and the currentBlock with the userland
app, but I would need to modify the userclient.  I don't think I have access
to it; it's provided for me by the IOAudioDevice?
The other problem with this approach is: how do I timestamp the wrap-around
of the ring buffer from the userland app?
Any suggestions or recommendations?

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