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Reasons why an AudioDeviceIOProc won't be added ?
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Reasons why an AudioDeviceIOProc won't be added ?


  • Subject: Reasons why an AudioDeviceIOProc won't be added ?
  • From: Rolley <email@hidden>
  • Date: Thu, 28 Feb 2002 23:23:06 -0500

Hi,

it seems that I can't stop my output AudioDeviceIOProc. Although, I get no error for adding and starting it, when removing or stopping it I get "com.
apple.audio.CAException[JCoreAudio:1.1.111],You cannot stop a device's IOProc that is not added to the device." What would be the reasons for an AudioDevice to not accept or not recognize an AudioDeviceIOProc ?

The IOProc is being called though, and actually won't stop because I can't remove/stop it! Unfortunatly I get no output from my application. All I try to do is redirect output to input. Do I need some kind of processing on the input if I just want to plug my guitar into the built-in port and hear some sound through the computer ?

What is usually the length of an AudioBufferList when receiving input ? I get a length of one on every call.

Is it correct to copy each buffer of the AudioBufferList (with copyFromTo(
...) ) during input and during output replacing ( again with copyFromTo ) each buffers of the AudioBufferList by the one I've copied before ?


Thanks,
Roland Fines
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