Looks like Bernd's suggestion works!
2007/12/20, tahome izwah <email@hidden>:
> Bill and Bernd, thank you! It looks indeed like a bug in Logic 8 to me.
> Bernd, I tried something similar to what you are suggesting, like
> comparing the pointer to the audio data in the ABLs that I get from
> the side chain and the main input (ie sideChainAbl->mBuffer.mData
> != inputAbl->mBuffer.mData). They appear to be different so there's
> no telling if the sidechain is connected or not. I did not use
> GetChannelData(), however, I might give this a try, even though I'm
> not sure what difference it would make (it should point to the same
> data, right?).
> I am curious - how do you know the two pointers have to be the same in
> Logic if the sidechain is not connected? Ie. what is the logic behind
> this - is this just something you discovered empirically or is this
> documented somewhere? Is it guaranteed to work? I mean, Logic could as
> well use some pre-set buffer containing silence for an unconnected
> sidechain, couldn't it?
> Thanks again,
> 2007/12/20, Bernd Burhoff <email@hidden>:
> > Hi,
> > I found out the same in Logic 8 : HasInput() is always TRUE, even if there
> > is no connection selected for the SideChain.
> > To find out if there is a connection to the SideChain or not, you can
> > compare the pointers to the audio data.
> > If both pointers are equal than there is no connection.
> > I use it like this:
> > if ( theInput->GetChannelData(0) ==
> > theSidechainInput->GetChannelData(0) )
> > // there is no sidechain connected
> > else
> > // sidechain is connected
> > Perhaps this might help you.
> > Bernd
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