GNU Radio block for interfacing with various radio hardware
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
gr-osmosdr/lib/rtl_tcp/rtl_tcp_source_c.cc

467 lines
12 KiB

/* -*- c++ -*- */
/*
* Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include <fstream>
#include <string>
#include <sstream>
#include <boost/assign.hpp>
#include <boost/algorithm/string.hpp>
#include <gnuradio/io_signature.h>
#include <gnuradio/blocks/deinterleave.h>
#include <gnuradio/blocks/float_to_complex.h>
#include "rtl_tcp_source_c.h"
#include "arg_helpers.h"
using namespace boost::assign;
static std::string get_tuner_name( enum rtlsdr_tuner tuner_type )
{
if ( RTLSDR_TUNER_E4000 == tuner_type )
return "E4000";
else if ( RTLSDR_TUNER_FC0012 == tuner_type )
return "FC0012";
else if ( RTLSDR_TUNER_FC0013 == tuner_type )
return "FC0013";
else if ( RTLSDR_TUNER_FC2580 == tuner_type )
return "FC2580";
else if ( RTLSDR_TUNER_R820T == tuner_type )
return "R820T";
else
return "Unknown";
}
rtl_tcp_source_c_sptr make_rtl_tcp_source_c(const std::string &args)
{
return gnuradio::get_initial_sptr(new rtl_tcp_source_c(args));
}
rtl_tcp_source_c::rtl_tcp_source_c(const std::string &args) :
gr::hier_block2("rtl_tcp_source_c",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(1, 1, sizeof (gr_complex))),
_no_tuner(false),
_auto_gain(false),
_if_gain(0)
{
std::string host = "127.0.0.1";
unsigned short port = 1234;
int payload_size = 16384;
unsigned int direct_samp = 0, offset_tune = 0;
_freq = 0;
_rate = 0;
_gain = 0;
_corr = 0;
dict_t dict = params_to_dict(args);
if (dict.count("rtl_tcp")) {
std::vector< std::string > tokens;
boost::algorithm::split( tokens, dict["rtl_tcp"], boost::is_any_of(":") );
if ( tokens[0].length() && (tokens.size() == 1 || tokens.size() == 2 ) )
host = tokens[0];
if ( tokens.size() == 2 ) // port given
port = boost::lexical_cast< unsigned short >( tokens[1] );
}
if (dict.count("psize"))
payload_size = boost::lexical_cast< int >( dict["psize"] );
if (dict.count("direct_samp"))
direct_samp = boost::lexical_cast< unsigned int >( dict["direct_samp"] );
if (dict.count("offset_tune"))
offset_tune = boost::lexical_cast< unsigned int >( dict["offset_tune"] );
if (!host.length())
host = "127.0.0.1";
if (0 == port)
port = 1234;
if (payload_size <= 0)
payload_size = 16384;
_src = make_rtl_tcp_source_f(sizeof(float), host.c_str(), port, payload_size);
if ( _src->get_tuner_type() != RTLSDR_TUNER_UNKNOWN )
{
std::cerr << "The RTL TCP server reports a "
<< get_tuner_name( _src->get_tuner_type() )
<< " tuner with "
<< _src->get_tuner_gain_count() << " RF and "
<< _src->get_tuner_if_gain_count() << " IF gains."
<< std::endl;
}
set_gain_mode(false); /* enable manual gain mode by default */
_src->set_direct_sampling(direct_samp);
if (direct_samp) {
_no_tuner = true;
}
_src->set_offset_tuning(offset_tune);
/* rtl tcp source provides a stream of interleaved IQ floats */
gr::blocks::deinterleave::sptr deinterleave = \
gr::blocks::deinterleave::make( sizeof(float) );
/* block to convert deinterleaved floats to a complex stream */
gr::blocks::float_to_complex::sptr f2c = \
gr::blocks::float_to_complex::make( 1 );
connect(_src, 0, deinterleave, 0);
connect(deinterleave, 0, f2c, 0); /* I */
connect(deinterleave, 1, f2c, 1); /* Q */
connect(f2c, 0, self(), 0);
}
rtl_tcp_source_c::~rtl_tcp_source_c()
{
}
std::string rtl_tcp_source_c::name()
{
return "RTL TCP Client";
}
std::vector<std::string> rtl_tcp_source_c::get_devices()
{
std::vector<std::string> devices;
std::string args = "rtl_tcp=localhost:1234";
args += ",label='RTL-SDR Spectrum Server'";
devices.push_back( args );
return devices;
}
size_t rtl_tcp_source_c::get_num_channels( void )
{
return 1;
}
osmosdr::meta_range_t rtl_tcp_source_c::get_sample_rates( void )
{
osmosdr::meta_range_t range;
range += osmosdr::range_t( 250000 ); // known to work
range += osmosdr::range_t( 1000000 ); // known to work
range += osmosdr::range_t( 1024000 ); // known to work
range += osmosdr::range_t( 1800000 ); // known to work
range += osmosdr::range_t( 1920000 ); // known to work
range += osmosdr::range_t( 2000000 ); // known to work
range += osmosdr::range_t( 2048000 ); // known to work
range += osmosdr::range_t( 2400000 ); // known to work
// range += osmosdr::range_t( 2600000 ); // may work
// range += osmosdr::range_t( 2800000 ); // may work
// range += osmosdr::range_t( 3000000 ); // may work
// range += osmosdr::range_t( 3200000 ); // max rate
return range;
}
double rtl_tcp_source_c::set_sample_rate( double rate )
{
_src->set_sample_rate( int(rate) );
_rate = rate;
return get_sample_rate();
}
double rtl_tcp_source_c::get_sample_rate( void )
{
return _rate;
}
osmosdr::freq_range_t rtl_tcp_source_c::get_freq_range( size_t chan )
{
osmosdr::freq_range_t range;
if (_no_tuner) {
range += osmosdr::range_t( 0, double(28.8e6) ); // as far as we know
return range;
}
enum rtlsdr_tuner tuner = _src->get_tuner_type();
if ( tuner == RTLSDR_TUNER_E4000 ) {
/* there is a (temperature dependent) gap between 1100 to 1250 MHz */
range += osmosdr::range_t( 52e6, 2.2e9 );
} else if ( tuner == RTLSDR_TUNER_FC0012 ) {
range += osmosdr::range_t( 22e6, 948e6 );
} else if ( tuner == RTLSDR_TUNER_FC0013 ) {
range += osmosdr::range_t( 22e6, 1.1e9 );
} else if ( tuner == RTLSDR_TUNER_FC2580 ) {
range += osmosdr::range_t( 146e6, 308e6 );
range += osmosdr::range_t( 438e6, 924e6 );
} else if ( tuner == RTLSDR_TUNER_R820T ) {
range += osmosdr::range_t( 24e6, 1766e6 );
} else {
range += osmosdr::range_t( 52e6, 2.2e9 ); // assume E4000 tuner
}
return range;
}
double rtl_tcp_source_c::set_center_freq( double freq, size_t chan )
{
_src->set_freq( int(freq) );
_freq = freq;
return get_center_freq(chan);
}
double rtl_tcp_source_c::get_center_freq( size_t chan )
{
return _freq;
}
double rtl_tcp_source_c::set_freq_corr( double ppm, size_t chan )
{
_src->set_freq_corr( int(ppm) );
_corr = ppm;
return get_freq_corr( chan );
}
double rtl_tcp_source_c::get_freq_corr( size_t chan )
{
return _corr;
}
std::vector<std::string> rtl_tcp_source_c::get_gain_names( size_t chan )
{
std::vector< std::string > names;
names += "LNA";
if ( _src->get_tuner_type() == RTLSDR_TUNER_E4000 ) {
names += "IF";
}
return names;
}
osmosdr::gain_range_t rtl_tcp_source_c::get_gain_range( size_t chan )
{
osmosdr::gain_range_t range;
/* the following gain values have been copied from librtlsdr */
/* all gain values are expressed in tenths of a dB */
const int e4k_gains[] = { -10, 15, 40, 65, 90, 115, 140, 165, 190, 215,
240, 290, 340, 420 };
const int fc0012_gains[] = { -99, -40, 71, 179, 192 };
const int fc0013_gains[] = { -99, -73, -65, -63, -60, -58, -54, 58, 61,
63, 65, 67, 68, 70, 71, 179, 181, 182,
184, 186, 188, 191, 197 };
const int fc2580_gains[] = { 0 /* no gain values */ };
const int r820t_gains[] = { 0, 9, 14, 27, 37, 77, 87, 125, 144, 157,
166, 197, 207, 229, 254, 280, 297, 328,
338, 364, 372, 386, 402, 421, 434, 439,
445, 480, 496 };
const int unknown_gains[] = { 0 /* no gain values */ };
const int *ptr = NULL;
int len = 0;
switch (_src->get_tuner_type())
{
case RTLSDR_TUNER_E4000:
ptr = e4k_gains; len = sizeof(e4k_gains);
break;
case RTLSDR_TUNER_FC0012:
ptr = fc0012_gains; len = sizeof(fc0012_gains);
break;
case RTLSDR_TUNER_FC0013:
ptr = fc0013_gains; len = sizeof(fc0013_gains);
break;
case RTLSDR_TUNER_FC2580:
ptr = fc2580_gains; len = sizeof(fc2580_gains);
break;
case RTLSDR_TUNER_R820T:
ptr = r820t_gains; len = sizeof(r820t_gains);
break;
default:
ptr = unknown_gains; len = sizeof(unknown_gains);
break;
}
if ( ptr != NULL && len > 0 )
{
for (int i = 0; i < int(len / sizeof(int)); i++)
range += osmosdr::range_t( ptr[i] / 10.0f );
}
return range;
}
osmosdr::gain_range_t rtl_tcp_source_c::get_gain_range( const std::string & name, size_t chan )
{
if ( "IF" == name ) {
if ( _src->get_tuner_type() == RTLSDR_TUNER_E4000 ) {
return osmosdr::gain_range_t(3, 56, 1);
} else {
return osmosdr::gain_range_t();
}
}
return get_gain_range( chan );
}
bool rtl_tcp_source_c::set_gain_mode( bool automatic, size_t chan )
{
_src->set_gain_mode(int(!automatic));
_src->set_agc_mode(automatic);
_auto_gain = automatic;
return get_gain_mode(chan);
}
bool rtl_tcp_source_c::get_gain_mode( size_t chan )
{
return _auto_gain;
}
double rtl_tcp_source_c::set_gain( double gain, size_t chan )
{
osmosdr::gain_range_t gains = rtl_tcp_source_c::get_gain_range( chan );
_src->set_gain( int(gains.clip(gain) * 10.0) );
_gain = gain;
return get_gain(chan);
}
double rtl_tcp_source_c::set_gain( double gain, const std::string & name, size_t chan )
{
if ( "IF" == name ) {
return set_if_gain( gain, chan );
}
return set_gain( gain, chan );
}
double rtl_tcp_source_c::get_gain( size_t chan )
{
return 0;
}
double rtl_tcp_source_c::get_gain( const std::string & name, size_t chan )
{
if ( "IF" == name ) {
return _if_gain;
}
return get_gain( chan );
}
double rtl_tcp_source_c::set_if_gain(double gain, size_t chan)
{
if ( _src->get_tuner_type() != RTLSDR_TUNER_E4000 ) {
_if_gain = 0;
return _if_gain;
}
std::vector< osmosdr::gain_range_t > if_gains;
if_gains += osmosdr::gain_range_t(-3, 6, 9);
if_gains += osmosdr::gain_range_t(0, 9, 3);
if_gains += osmosdr::gain_range_t(0, 9, 3);
if_gains += osmosdr::gain_range_t(0, 2, 1);
if_gains += osmosdr::gain_range_t(3, 15, 3);
if_gains += osmosdr::gain_range_t(3, 15, 3);
std::map< int, double > gains;
/* initialize with min gains */
for (unsigned int i = 0; i < if_gains.size(); i++) {
gains[ i + 1 ] = if_gains[ i ].start();
}
for (int i = if_gains.size() - 1; i >= 0; i--) {
osmosdr::gain_range_t range = if_gains[ i ];
double error = gain;
for( double g = range.start(); g <= range.stop(); g += range.step() ) {
double sum = 0;
for (int j = 0; j < int(gains.size()); j++) {
if ( i == j )
sum += g;
else
sum += gains[ j + 1 ];
}
double err = abs(gain - sum);
if (err < error) {
error = err;
gains[ i + 1 ] = g;
}
}
}
#if 0
std::cerr << gain << " => "; double sum = 0;
for (unsigned int i = 0; i < gains.size(); i++) {
sum += gains[ i + 1 ];
std::cerr << gains[ i + 1 ] << " ";
}
std::cerr << " = " << sum << std::endl;
#endif
for (unsigned int stage = 1; stage <= gains.size(); stage++) {
_src->set_if_gain(stage, int(gains[ stage ] * 10.0));
}
_if_gain = gain;
return gain;
}
std::vector< std::string > rtl_tcp_source_c::get_antennas( size_t chan )
{
std::vector< std::string > antennas;
antennas += get_antenna(chan);
return antennas;
}
std::string rtl_tcp_source_c::set_antenna( const std::string & antenna, size_t chan )
{
return get_antenna(chan);
}
std::string rtl_tcp_source_c::get_antenna( size_t chan )
{
return "RX";
}