Hi Martin,

the response is really late, but as nobody responded, it might be better to have a late response, than none:

On Thu, Apr 23, 2015 at 09:51:48AM +0200, martin wrote:

i want to ask why there is a mix of python and c code with lots of pipes in between.

It is a design decision? Or was it some kind of easyer?

The goal of the project was "let's try to have a decoder as comprehensive as possible with as little time investment as possible". The people involved in the various Osmocom projects are actually very few, and available free/spare time is always at a premium.

So the python demodulator code was found/inheritet from the APCO25 project and just taken as-is. The C code for the PHY and lower MAC was written from scratch based on the specs and some textbooks.

After all, this is a FOSS project and it lives off contributions. So if somebody wants to streamline things more, and have an actual architecture rather than a kludge of several independent parts, by all means go ahead and implement it.