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QT 6.4, CoreAudio and USB devices
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QT 6.4, CoreAudio and USB devices

  • Subject: QT 6.4, CoreAudio and USB devices
  • From: Amon Tavor <email@hidden>
  • Date: Tue, 16 Dec 2003 15:07:12 +0200
Hello,

I'm using CoreAudio for capturing audio from USB devices. Since QT 6.4 it stopped working - my IOProc is never called! The same code works on QT 6.3. It also works with other devices on QT 6.4, such as internal mic or iSight, but not with USB devices, such as iMic or Telex. These devices work on QT 6.4 using the Sequence Grabber (QuickTime) API, but not through the CoreAudio API.
Has anyone encountered this?
Does anyone know of any changes to the CoreAudio hardware interfacing API in QT 6.4?
Where can I find documentation or sample code for CoreAudio hardware interfacing API?

Thanks,
Amon
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