Hi Krzysztof,
thansk for your patches, they are both applied after a small fix (d_LUT
was not deleted).
Best regards,
Dimitri
On Wed, 24 Aug 2016 23:43:03 +0200, Krzysztof Halasa <khc(a)pm.waw.pl> wrote:
Hello,
it's my first mail on this list, so please forgive me if I do something
wrong.
I'm about to post a couple of patches for RTL drivers:
1. RTL-SDR: convert _lut to float[] to reduce size by a factor of 256.
The _lut is being indexed by I + Q (16 bits = 65536 entries), however
both samples can be processed independently, resulting in 8-bit LUT.
Saves a bit of RAM and CPU cache.
lib/rtl/rtl_source_c.cc | 19 ++++++-------------
lib/rtl/rtl_source_c.h | 4 ++--
2 files changed, 8 insertions(+), 15 deletions(-)
2. RTL-TCP: Convert to single class model
The existing RTL TCP driver is quite different from its brother RTL_SDR.
It's much more complicated, uses gr::blocks::deinterleave and
gr::blocks::float_to_complex, and generally doesn't work correctly
(e.g.
https://github.com/csete/gqrx/issues/99
Spectrum is mirrored when filter or demodulator changes (rtl_tcp) #99)
I've converted the RTL TCP driver to the model used by RTL_SDR,
simplifying it in the process, and fixing the GQRX issue.
lib/rtl_tcp/CMakeLists.txt | 1 -
lib/rtl_tcp/rtl_tcp_source_c.cc | 352
++++++++++++++++++++++++++++++++--------
lib/rtl_tcp/rtl_tcp_source_c.h | 32 +++-
lib/rtl_tcp/rtl_tcp_source_f.cc | 327
-------------------------------------
lib/rtl_tcp/rtl_tcp_source_f.h | 125 --------------
5 files changed, 309 insertions(+), 528 deletions(-)
I'm also thinking about merging the code common to RTL-SDR and RTL-TCP,
but this it's done yet.
Comments?