Bizarre hapenning in my plugin

Cowdery, Bob [UK] Bob.Cowdery at
Sat Jan 21 21:57:24 UTC 2006

I have some bizarre happenings in my plugin. It must be me, but I have
no idea what's going on.


Firstly, the plugin does actually work and is not trivial because it
uses PortAudio which it streams through a little signal processing
function. I can start it and stop it and it all behaves properly. The
start() and stop() take no parameters. The problems start when I try and
pass parameters to the other functions. 


I tried a test function:


answerValue: value


            <primitive: 'answerValue' module:'SDRPhasingDSPPlugin'>

            Transcript show: 'Primitive answerValue failed'.

            ^ false



As far as I know you can just do this:


answerValue: value


            self export: true.


            (self cCode: 'return value')


This translated to:


EXPORT(int) answerValue(int value) {

            return value;



When I tried this it appeared to work. No failures and I got back what I
entered. Then I realised I could put anything as a parameter :


x answerValue: 'abc' 'abc'


Whatever parameter I gave it got echoed back regardless of whether it
was an int or not. I could even say.


x answerValue: x a SDRPhasingDSP


To prove this I changed the code to 


answerValue: value


            self export: true.


            (self cCode: 'return 100')


and still got back what I entered.




x getModuleName a SDRPhasingDSP


also answers the type of x and not the plugin name.


Please put me on the right track someone before I go completely mad.




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