On Monday 07 April 2008 14:53, Balan Clockfactory wrote:
> in python the call to csound.GetOutputBuffer() returns a PySwigObject
> wrapping a double*.  how is this supposed to be used?  or rather, how can a
> get an array out of GetOutputBuffer()?
>
> x = csound.GetOutputBuffer() # what do i do with x?
>
> Also, using PerformBuffer() or PerformKsmps()  in a matlab Mex file causes
> a (very bad) segmentation fault in matlab.

you use it to create a floatArray or doubleArray object:

x=csnd.csoundGetOutputBuffer(self.cs)
fa=csnd.floatArray.frompointer(x)

but warning this is really pathetically slow to use.  and its of unbounded 
length.  i.e. you can't say "for f in fa:", because fa has no limit, it will 
just segfault when you run off the end of the buffer

it would be much better if it returned a python array.array 




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