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Re: working with the CoreAudio AudioUnits MyVolumeUnit Tutorial
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Re: working with the CoreAudio AudioUnits MyVolumeUnit Tutorial


  • Subject: Re: working with the CoreAudio AudioUnits MyVolumeUnit Tutorial
  • From: Michael Pares <email@hidden>
  • Date: Mon, 9 May 2005 11:46:23 -0700

Thanks.

I reinstalled QT but the file
System\Library\Frameworks\AudioUnit.framework\Headers\AudioUnitProperties.h
which contains struct HostCallbackInfo was not updated and still does
not have procedure TransportStateProc in it.  Which seems to be why I
am still getting an error.  What can I do to get the headers to update
if Quicktime Installers won't do it for me?

Michael

On 5/9/05, Elliot Sedegah <email@hidden> wrote:
> You might need to reinstall QT.
>
> http://developer.apple.com/qa/qa2004/qa1386.html
>
> On May 8, 2005, at 12:30 PM, Michael Pares wrote:
>
> > Hi all,
> >
> > I'm working with the Audio Units Tutorial found here
> > http://developer.apple.com/audio/audiounits.html
> >
> > I keep getting an error 'struct HostCallbackInfo' has no member named
> > 'transportStateProc' when trying to build MyVolumeUnit.cpp
> >
> > The build results are thus:
> >
> > Building target "MyVolumeUnit" with build style "Development"
> > (optimization:level '0', debug-symbols:on) — (2 errors)
> >     Compiling MyVolumeUnit.cpp (2 errors)
> >                  In file included from
> > /Users/manic/Developer/Audio/MyVolumeUnit/MyVolumeUnit.cpp:43:
> >                         In file Included from
> > /Users/manic/Developer/Audio/MyVolumeUnit/MyVolumeUnit.h:43,
> >                                In file included from
> > /Developer/Examples/CoreAudio/AudioUnits/AUPublic/OtherBases/
> > AUEffectBase.h:46,
> >
> > /Developer/Examples/CoreAudio/AudioUnits/AUPublic/AUBase/AUBase.h:672:
> > error: 'struct HostCallbackInfo' has no member named
> > 'transportStateProc'
> >
> > /Developer/Examples/CoreAudio/AudioUnits/AUPublic/AUBase/AUBase.h:672:
> > error: 'struct HostCallbackInfo' has no member named
> > 'transportStateProc'
> >     Build failed (2 errors)
> >
> > I found this page
> > (http://lists.apple.com/archives/coreaudio-api/2004/Sep/msg00128.html)
> > about the same sort of error but it was of no help.  Neither deleting
> > AUPropertiesPostPantherAdditions.h nor deleting and reinstalling
> > Quicktime helped.  But I am using Quicktime 7 though I don't think
> > that should make a difference.  Can anybody shed any light on this?
> >
> > Thanks a bunch,
> > Michael
> >  _______________________________________________
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>
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References: 
 >working with the CoreAudio AudioUnits MyVolumeUnit Tutorial (From: Michael Pares <email@hidden>)
 >Re: working with the CoreAudio AudioUnits MyVolumeUnit Tutorial (From: Elliot Sedegah <email@hidden>)

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