Re: auval error when setting stream format on N->N plug-in
Re: auval error when setting stream format on N->N plug-in
- Subject: Re: auval error when setting stream format on N->N plug-in
- From: William Stewart <email@hidden>
- Date: Thu, 26 Feb 2009 20:11:21 -0800
yes
You use the Initialise call to validate that the formats you are being
asked to support are actually valid. See AUEffectBase::Initialise for
a general implementation of this
Bill
On Feb 26, 2009, at 3:14 PM, Jeremy Todd wrote:
Hi,
We're preparing an Audio Unit which performs resampling, and it
supports any N->N channel configuration (any number of inputs and
outputs, as long as inputs == outputs). We're seeing an auval
failure which is pasted below, and I don't see any reasonable way to
work around it.
I think it's failing because we return noErr from ChangeStreamFormat
with 3 input channels and 1 output channels. The problem is that
inputs and outputs are set via separate calls to ChangeStreamFormat,
so we can't validate the current combination of input and output
channels until our Audio Unit is initialized. What behavior does
auval expect in this case, and how exactly is an Audio Unit supposed
to implement it?
Regards,
Jeremy
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