Apple

Message: 3
Date: Thu, 16 Jun 2005 23:11:42 +1000
From: Heath Raftery <email@hidden>
Subject: Automatically initialising an AudioBufferList for input of
data

I am currently setting up my fInputBufferList by hand, based on trial

and error. That's not particularly robust given the various

fInputUnits I might be dealing with. The AudioDevice API has this,

which appears to deal with the problem:

<code>

AudioDeviceGetPropertyInfo(fInputDeviceID, 0, YES,

kAudioDevicePropertyStreamConfiguration, &theSize, NULL);

fInputBufferList = (AudioBufferList *)malloc(theSize);

AudioDeviceGetProperty(fInputDeviceID, 0, YES,

kAudioDevicePropertyStreamConfiguration, &theSize, fInputBufferList);

</code>

But my fInputDeviceID properties are different to the output format

of the fAudioUnit (specifically the data is deinterleaved inside the

unit), so the fInputBufferList that comes back is fairly useless. I

couldn't see anything in AudioUnit that might do what I want.