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Polling Callback, Threads [Attn: Michael Thornburgh]
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Polling Callback, Threads [Attn: Michael Thornburgh]


  • Subject: Polling Callback, Threads [Attn: Michael Thornburgh]
  • From: Daniel Todd Currie <email@hidden>
  • Date: Wed, 10 Dec 2003 14:24:03 -0800

So I've created this really cool tuner application that uses CoreAudio to simply get audio from the default audio device. I have naively acquired my buffer data by placing a message to my analyzer class inside the IOProc callback function. Needless to say, system performance is quite poor while my app is running. ;)

I've been told that i will need to set up a new thread to communicate with the CoreAudio thread and to grab the buffers as they are filled. I don't quite know how to do this, but I would really hate to see this project go to waste (it is a freeware project, if that might encourage your charity).

Is there perhaps a framework available somewhere that would make this problem easier to deal with? I would have expected that there would be some way to streamline the process of acquiring audio data in a desirable manner, since every CoreAudio programmer must do it. Any other tips would be greatly appreciated; a brief outline of how I should go about getting my buffer data would be invaluable. Thanks in advance...

Daniel Currie (crossing fingers)
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