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Re: AudioUnitSetRenderNotification() returns badComponentSelector
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Re: AudioUnitSetRenderNotification() returns badComponentSelector


  • Subject: Re: AudioUnitSetRenderNotification() returns badComponentSelector
  • From: email@hidden
  • Date: Wed, 03 Aug 2005 18:33:46 -0700

Hi Scott,

AudioUnitSetRenderNotification() appears to be specific to V1 Audio Units --
see the comment in AUNTComponent.h listing all the APIs and structs
contained in that file as being deprecated.

The alternative AU-V2 call, which seems to have an identical parameter list, is:

        AudioUnitAddRenderNotify()


Best regards,
Peter


> At 12:17 PM 8/3/05, you wrote:
>
> Whenever I attempt to use AudioUnitSetRenderNotification(), the result code returned is badComponentSelector (-2147450878, “Component does not support the specified request code.”), and my callback is never called.
>
> The AUs I have tried this with have been Apple’s Delay, the dev sample code’s SampleEffect, and Smartelectronix’s Ambience.
>
> I am creating an AUGraph of several nodes (opening, initializing, and starting), getting the effect AudioUnit for the node I am interested in render notifications for, and attempting to pass this AudioUnit to AudioUnitSetRenderNotification().  The graph itself is functionaing and rendering audio as expected.
>
> Does an AU need to be specially written to support this function?  I was hoping to just tap into any I was interested in.
>
> I'm not finding much of anything for documentation...
>
> Many thanks.
>
> Scott Puhl

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