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Re: Building Audio Unit with Cocoa View without parameters
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Re: Building Audio Unit with Cocoa View without parameters


  • Subject: Re: Building Audio Unit with Cocoa View without parameters
  • From: William Stewart <email@hidden>
  • Date: Tue, 27 Mar 2007 12:18:46 -0700

The generic view is provided to put up a standard slider view for an AU's parameters. So, if you have no parameters, putting up a generic view that shows no UI elements is actually correct.

If you want to put up a picture, the best thing to do is to create a custom Cocoa view and just deal with it that way. Have a look in the SDK for examples (FilterDemo in/Developer/Examples/CoreAudio) for how to do a custom cocoa view

Bill

On 27/03/2007, at 5:11 AM, Stefan Huber wrote:

Hi,

I'm trying to build a Audio Unit with a Cocoa view which does not use any parameters. The View only consists of a png picture.
The problem I was running into is that when I m not using any parameter the view will not be opened correctly.
I am quite new to developing audio units, so this might be a simple issue - but I was not able to find any information relating to that problem.


In order to end up with a working Cocoa view I found, that I need the call

Globals()->UseIndexedParameters(kNumberOfParameters);

If I set the kNumberOfParameters = 0 the View will not work correctly. In the AU-Lab a Cocoa View will be displayed, but it does not contain any content.
If I set the kNumberOfParameters = 1 the Cocoa View will work correctly, but the Generic View will contain an unused Parameter.


So, the question is - what do I need to do in order to end up with a Audio Unit with a working Cocoa View and a Generic View without unused parameters.

thank you


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