On Mon, Oct 02, 2006 at 09:08:00AM -0700, Johnathan Corgan wrote: > Marcus Leech wrote: > > > There was discussion on the list a few months ago about adding the > > ability to hook a python function > > into the processing chain. I don't remember what the conclusion of > > that discussion was. > > > > I have a need to be able to hook a user-defined Python code snippet into > > the processing chain, near the end > > where the sample rate is very low (1Hz). Is this easily done, and if > > so, how? > > Take a look at gr.feval_xx class: > > http://gnuradio.org/trac/browser/gnuradio/trunk/gnuradio-core/src/lib/general/gr_feval.h > > It defines a function 'eval' that can be called either from C++ or from > Python. In Python you can subclass this and override the eval function > with whatever you want. When the function is called from C++, control > flow passes to the Python interpreter to evaluate the function and return. > > I haven't used it myself, but you can get a good feel for what is > possible by looking at the QA code for the block at: > > http://gnuradio.org/trac/browser/gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/qa_feval.py > > Johnathan Corgan, AE6HO > [EMAIL PROTECTED]
This is all good info. You could build a few classes derived from gr_sync_block that would use the same techniques. Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
