Re: Quick question on configuring an AU for a certain channel config
Re: Quick question on configuring an AU for a certain channel config
- Subject: Re: Quick question on configuring an AU for a certain channel config
- From: "tahome izwah" <email@hidden>
- Date: Wed, 5 Dec 2007 08:34:03 +0100
Thanks, I found out that I had to override SupportedNumChannels().
This info was very difficult to find, the documentation keeps telling
me about kAudioUnitProperty_SupportedNumChannels but how on earth was
I to find out where to set this property... there really should be
some how-to file that tells you (1) if you want to set the number of
supported channels you should do this and that... This is so
frustrating because Leopard doesn't install the documentation where
the readme says it should be, and the templates don't work right,
either... :-(
Now I am left wondering how I declare two of the 4 input channels to
be a side chain. Any ideas or pointers to relevant documentation on
the Apple web site? I managed to download the "Audio Unit Programming
Guide" but it doesn't cover how to set up a side chain in an AU...
:-((
Thanks again for all your help.
--th
2007/12/5, William Stewart <email@hidden>:
> the channel config property. You publish the configurations you can
> support (I'm not sure what are typos in your example below) - but:
> On Dec 4, 2007, at 7:36 AM, tahome izwah wrote:
>
> > Hi all,
> >
> > I have a quick question and couldn't find the answer in any of the AU
> > documentation... I'm sure it is covered somewhere...
> >
> > In my AU I need to set the supported number of input channels vs. the
> > number of output channels. For example, I'd like to have 4 input
> > channels and 2 output channels, or 2 input channels and 2 output
> > channels, or 2 input channels and 2 output channels.
> >
> > The data from all the channels need to be present in the process
> > function at the same time (either in separate buffers or interlaced).
> >
> > What is the best (read easiest) way to tell the AU host that my AU
> > accepts a 4-2, 2-1 and 2-2 channel config?
>
> { {4, 2}, {2, 1}, {2, 2}}
>
> > This doesn't seem to be
> > covered in the documentation, and on 10.5 the ReadMe file at
> > /Developer/Examples/CoreAudio/ReadMe.rtf refers to a directory
> > /Developer/Examples/CoreAudio/Documentation that doesn't exist... :-(
> >
> > Thanks
> > --th
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