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kAudioUnitErr_Unauthorized and auval
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kAudioUnitErr_Unauthorized and auval


  • Subject: kAudioUnitErr_Unauthorized and auval
  • From: Andrew Kimpton <email@hidden>
  • Date: Mon, 6 Feb 2006 14:19:48 -0800

To my mind it's not invalid for an AudioUnit to return kAudioUnitErr_Unauthorized from Initialize() if serial numbers have not been entered, dongles are not present etc. However auval seems to persist in pushing the audiounit to answer 'unanswerable' questions if Initialize() returns the above error. To the point that auval will ultimately fail validation of a unit since it 'needs to be initialized but can't'. This in turn can lead to tech support calls since customers don't insert their dongle before running Logic - they then get the 'failed validation' dialog and will call us for the update. Furthermore we then need to describe to them how to launch AUManager in Logic, rescan the unit and continue on. At least one unnecessary customer call to our techsupport people.

Short of returning noErr from Initialize() instead of kAudioUnitErr_Unauthorized and then taking care not to do any 'real work' I can't see any other solution short of requesting that auval be changed to treat kAudioUnitErr_Unauthorized as a valid response that should then prevent it from doing any further work which requires an initialized unit and not to treat the whole unit as having failed validation.

Andrew 8-)

P.S. Logic 7.1 actually displays a reasonably worded dialog for this error - of course most users will not see it since the unit would not have been listed in the menus for them to select since it failed validation.

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