Forum: GNU Radio Developing with C++ but not python

Hi,
    I think python file means data go downstream without interacting
with other data stream.And I have seen several example writen in c++ and
they all contain a gr_top_block which makes them similar to python
files.Any body have the experience developing in c++?And what you think
is the major difficulity(except more effort) compared to python?
    Thanks.

> Hi,
>     I think python file means data go downstream without interacting
> with other data stream.And I have seen several example writen in c++ and
> they all contain a gr_top_block which makes them similar to python
> files.Any body have the experience developing in c++?And what you think
> is the major difficulity(except more effort) compared to python?
>     Thanks.


Hi,

I am not completely sure I understood your question, but as far as I can
tell you are concerned about running python next to C++ (I guess for
performance reasons.)

The core GNURadio application, also the top_blocks are C++ code, so all
the data processing and data passing is done in compiled C++ code 
(Unless
you decide to write blocks in python of course).
Python is only used for setup and connection purposes and use
automatically generated wrappers for the C++ code (so you call shared 
C++
libraries from python). See also these two FAQs
http://gnuradio.org/redmine/projects/gnuradio/wiki...

Martin

On Mon, Feb 25, 2013 at 09:26:22PM +0800, Gong Zhang wrote:
> Hi,
>    I think python file means data go downstream without interacting
> with other data stream.And I have seen several example writen in c++
> and they all contain a gr_top_block which makes them similar to
> python files.Any body have the experience developing in c++?And what
> you think is the major difficulity(except more effort) compared to
> python?

Yep, that's the major difference. Also, don't forget that there are some
blocks only available in Python.

MB

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