Re: [Discuss-gnuradio] gr-buffer usage

[Trond Danielsen]

2007/7/19, Vincenzo Pellegrini <address@hidden>:
> thanks Trond,
>
> doesn't
>
> gr.file_source--->usrp_sink
>
> constrain me at the maximum speed of my hard drive?
>
> and what whould be the right flow graph setup for buffering via
> gr.vector_source,
>  anything like:
>
> gr.file_source--->data=gr.vector_sink
> gr.vector_source(data, repeat=true)--->usrp_sink
>
> would be correct?

No, if you use vector_source, you should not use the gr.file_source to
load the data. How you read the data from the file depends on the
format is is stored in, but if it data recorded with GNU Radio, I
personally use numpy/scipy. Python example:

from numpy import *
# Use complex64 for gr.gr_complex and float32 for gr.float
data = fromfile("filename.dat", dtype="complex64")
src = gr.vector_source(data, repeat=True)