Where is gr.fft_vcc?

GNU Radio
1

I have been working with usrp_spectrum_sense.py but I haven’t found the
file
where it does the fft:

fft = gr.fft_vcc (self.fft_size, True, mywindow)

I’ve found the file window.py and self.fft_size is taken from the
options…
But I dont’t know the fft file!

Could anyone tell me??

Thanks in advance!

2

On Tue, Nov 11, 2008 at 10:55 AM, Santi O.
[email protected] wrote:

I have been working with usrp_spectrum_sense.py but I haven’t found the file
where it does the fft:

fft = gr.fft_vcc (self.fft_size, True, mywindow)

I’ve found the file window.py and self.fft_size is taken from the options…
But I dont’t know the fft file!

Could anyone tell me??

The power of swig allows the Python code to talk to the C++ defined
here:

http://gnuradio.org/trac/browser/gnuradio/trunk/gnuradio-core/src/lib/general/gr_fft_vcc.cc

Hopefully you can follow it from there.

Brian

3

On Tue, Nov 11, 2008 at 03:55:59PM +0000, Santi O. wrote:

Thanks in advance!
grep knows:

$ find . ( -name ‘.cc’ -o -name '.h’ ) -print | xargs grep -l
fft_vcc
./gr-gcell/src/gcell_fft_vcc.cc
./gr-gcell/src/gcell_fft_vcc.h
./gr-gcell/src/gcell.cc
./gnuradio-core/src/lib/swig/gnuradio_swig_py_general.cc
./gnuradio-core/src/lib/general/gr_fft_vcc.h
./gnuradio-core/src/lib/general/gr_fft_vcc_fftw.cc
./gnuradio-core/src/lib/general/gr_fft_vcc_fftw.h
./gnuradio-core/src/lib/general/gr_fft_vcc.cc

(Look in the last 4 files listed)

The SWIG .i files that define the interfaces to python are

./gnuradio-core/src/lib/general/gr_fft_vcc.i
./gnuradio-core/src/lib/general/gr_fft_vcc_fftw.cc

Eric