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Using AudioDeviceRead?
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Using AudioDeviceRead?


  • Subject: Using AudioDeviceRead?
  • From: Dirk Musfeldt <email@hidden>
  • Date: Tue, 18 Feb 2003 16:04:52 +0100

Hi all,

I'm trying to do some kind of soft play through with the default input
device. I try to call AudioDeviceRead in the callback.

This is roughly what I do:

AudioDeviceStart();

AudioDeviceGetProperty( ..., kAudioDevicePropertyStreamConfiguration, ... );

AllocBuffer();

AudioDeviceSetProperty (... kAudioDevicePropertyRegisterBufferList ...);


I set the AudioUnitInputCallback with kAudioUnitProperty_SetInputCallback.

Within my callback I do

AudioDeviceRead(mDevice, &stamp, mReadBuffer);

but that constantly returns kAudioHardwareIllegalOperationError.

Where is the error? How do I have to prepare the audio device?



With kind regards

Dirk Musfeldt
Meilenstein Mac OS Software

Neue Strasse 5
D-31582 Nienburg
Germany
Tel: +49 (0) 5021 91 24 44
Fax: +49 (0) 5021 91 24 45
<http://www.meilenstein.de/>
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