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Re: Capturing Data coming OUT of an AUGraph


On Feb 19, 2005, at 12:30 PM, Mark Gilbert wrote:

Folks.

I have an AUGraph which is primarily data being pulled into a Matrix Mixer feeding an output device.

I want to 'tap into' the data which has been mixed and is on its way out, so I can record it to disk.

Is there a simple callback I can insert to get this data as it passes through, without radically rewiring my architecture ?

I don't know well the AUGraph so I may be wrong. As far as I know, you don't have such a callback. What you could do is write a special AU that you could insert in front of your graph. Within the Render callback of this AU you should pass the audio buffers to a worker thread using a non blocking FIFO or ring buffer. This worker thread would then write the audio to the disk. What you must never do is call a disk API from the render callback. I believe there's a sample code in the SDK which shows how to deal with a disk writer thread (DiskWriterAUGraph I think but not sure).


Thanks

Mark Gilbert.
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 >Capturing Data coming OUT of an AUGraph (From: Mark Gilbert <email@hidden>)



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