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Re: [Discuss-gnuradio] pure python block?

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] pure python block?
Date: Thu, 23 Mar 2006 13:02:17 -0800
User-agent: Mutt/1.5.9i

On Thu, Mar 23, 2006 at 09:31:01PM +0100, Matteo Campanella wrote:
> Suppose I am willing to test some ideas, and that I do not care about
> latency or speed - I just want to be able to drop some quick lines of
> code to see if the idea is a good one or not... it would be nice to
> write a function in python and put it in the graph to see how it
> performs in the chain, using no real time sources or sinks (eg files)
> is it possible? how?
> Matteo

This is not currently possible.

But then it's not impossible either ;)

We could either leverage the "ufunc" framework that was briefly
mentioned in the past week, or create a new C++ block derived from
gr_block, gr_sync_block, etc, that accepts a python closure as a
constructor arg.  The block's work method would then recursively
invoke the interpreter to evaluate the python code.

What kind of args do think the python code would accept?
Is it sample at a time, or would you be passing, say NumPy arrays for
the input and output?


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