AU in XCode - beginner problems
AU in XCode - beginner problems
- Subject: AU in XCode - beginner problems
- From: Toine Heuvelmans <email@hidden>
- Date: Sat, 8 May 2004 14:14:01 +0200
Hi,
I have to find out how to create an AudioUnit (using XCode) for school
(I'm an AudioDesign student at the HKU, specialisation Software
Development), but for the last two months I've got nothing but errors.
There's some progress, but I still don't even have a simple GainAU.
I know some of the basics, because I had some help from Andrew Ostler
(expertsleepers) and from Cees Taal, who directed me to
http://lists.apple.com/archives/coreaudio-api/2004/Jan/11/
documenation.001.txt
and the CoreAudio Swiki (which is momentarily offline or something)
but a lot of questions remain, and I have to document everything I do
(for school) so I need to know what I'm doing.
First of all some things that should be easy to answer:
1. Which methods do I need to implement to build the most basic (let's
say Effect)AudioUnit? (to just get a successful build)
2. What exactly is a component?
3. There are various returntypes, like ComponentResult and OSStatus.
What does it return?
4. Today I started all over again (for the Xst time, I've lost count)
from scratch, imported SDK files, frameworks, adjusted the target
(carbon bundle>>component) and created the .exp and resources files,
but nothing in my plugin file. I had only 1 error in my resources file
(the best result in 2 months) but I could not recover what's wrong:
"SysError 0 during open of "ConditionalMacros.r". Fatal Error, can't
recover."
So what am I doing wrong?
5. One time I succeeded in just outputting a totally empty component.
But this was a dirictory with "contents" and in that the Info.plist and
Resources. Is this right, would this (if containing all stuff for an
AU) be recognised as a component, because all the AU's I've downloaded
can't be opened as a normal directory...
6. Any nice links, hints, advices?
Thank you if you can answer one or more of these questions!
Toine Heuvelmans [Netherlands]
Student Audio Design (second year)
email@hidden
http://www.hku.nl
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