GNU Radio block for interfacing with various radio hardware
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gr-osmosdr/lib/airspyhf/airspyhf_source_c.cc

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/* -*- c++ -*- */
/*
* Copyright 2013 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.
*/
/*
* config.h is generated by configure. It contains the results
* of probing for features, options etc. It should be the first
* file included in your .cc file.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdexcept>
#include <iostream>
#include <algorithm>
#include <boost/assign.hpp>
#include <boost/format.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/thread/thread.hpp>
#include <gnuradio/io_signature.h>
#include "airspyhf_source_c.h"
#include "arg_helpers.h"
using namespace boost::assign;
#define AIRSPYHF_FORMAT_ERROR(ret, msg) \
boost::str( boost::format(msg " (%1%)") % ret )
#define AIRSPYHF_THROW_ON_ERROR(ret, msg) \
if ( ret != AIRSPYHF_SUCCESS ) \
{ \
throw std::runtime_error( AIRSPYHF_FORMAT_ERROR(ret, msg) ); \
}
#define AIRSPYHF_FUNC_STR(func, arg) \
boost::str(boost::format(func "(%1%)") % arg) + " has failed"
airspyhf_source_c_sptr make_airspyhf_source_c (const std::string & args)
{
return gnuradio::get_initial_sptr(new airspyhf_source_c (args));
}
/*
* Specify constraints on number of input and output streams.
* This info is used to construct the input and output signatures
* (2nd & 3rd args to gr::block's constructor). The input and
* output signatures are used by the runtime system to
* check that a valid number and type of inputs and outputs
* are connected to this block. In this case, we accept
* only 0 input and 1 output.
*/
static const int MIN_IN = 0; // mininum number of input streams
static const int MAX_IN = 0; // maximum number of input streams
static const int MIN_OUT = 1; // minimum number of output streams
static const int MAX_OUT = 1; // maximum number of output streams
/*
* The private constructor
*/
airspyhf_source_c::airspyhf_source_c (const std::string &args)
: gr::sync_block ("airspyhf_source_c",
gr::io_signature::make(MIN_IN, MAX_IN, sizeof (gr_complex)),
gr::io_signature::make(MIN_OUT, MAX_OUT, sizeof (gr_complex))),
_dev(NULL),
_sample_rate(0),
_center_freq(0),
_freq_corr(0)
{
int ret;
dict_t dict = params_to_dict(args);
_dev = NULL;
ret = airspyhf_open( &_dev );
AIRSPYHF_THROW_ON_ERROR(ret, "Failed to open Airspy HF+ device")
uint32_t num_rates;
airspyhf_get_samplerates(_dev, &num_rates, 0);
uint32_t *samplerates = (uint32_t *) malloc(num_rates * sizeof(uint32_t));
airspyhf_get_samplerates(_dev, samplerates, num_rates);
for (size_t i = 0; i < num_rates; i++)
_sample_rates.push_back( std::pair<double, uint32_t>( samplerates[i], i ) );
free(samplerates);
/* since they may (and will) give us an unsorted array we have to sort it here
* to play nice with the monotonic requirement of meta-range later on */
std::sort(_sample_rates.begin(), _sample_rates.end());
std::cerr << "Using libairspyhf" << AIRSPYHF_VERSION << ", samplerates: ";
for (size_t i = 0; i < _sample_rates.size(); i++)
std::cerr << boost::format("%gM ") % (_sample_rates[i].first / 1e6);
std::cerr << std::endl;
set_center_freq( (get_freq_range().start() + get_freq_range().stop()) / 2.0 );
set_sample_rate( get_sample_rates().start() );
_fifo = new boost::circular_buffer<gr_complex>(5000000);
if (!_fifo) {
throw std::runtime_error( std::string(__FUNCTION__) + " " +
"Failed to allocate a sample FIFO!" );
}
}
/*
* Our virtual destructor.
*/
airspyhf_source_c::~airspyhf_source_c ()
{
int ret;
if (_dev) {
if ( airspyhf_is_streaming( _dev ) )
{
ret = airspyhf_stop( _dev );
if ( ret != AIRSPYHF_SUCCESS )
{
std::cerr << AIRSPYHF_FORMAT_ERROR(ret, "Failed to stop RX streaming") << std::endl;
}
}
ret = airspyhf_close( _dev );
if ( ret != AIRSPYHF_SUCCESS )
{
std::cerr << AIRSPYHF_FORMAT_ERROR(ret, "Failed to close AirSpy") << std::endl;
}
_dev = NULL;
}
if (_fifo)
{
delete _fifo;
_fifo = NULL;
}
}
int airspyhf_source_c::_airspyhf_rx_callback(airspyhf_transfer_t *transfer)
{
airspyhf_source_c *obj = (airspyhf_source_c *)transfer->ctx;
return obj->airspyhf_rx_callback((float *)transfer->samples, transfer->sample_count);
}
int airspyhf_source_c::airspyhf_rx_callback(void *samples, int sample_count)
{
size_t i, n_avail, to_copy, num_samples = sample_count;
float *sample = (float *)samples;
_fifo_lock.lock();
n_avail = _fifo->capacity() - _fifo->size();
to_copy = (n_avail < num_samples ? n_avail : num_samples);
for (i = 0; i < to_copy; i++ )
{
/* Push sample to the fifo */
_fifo->push_back( gr_complex( *sample, *(sample+1) ) );
/* offset to the next I+Q sample */
sample += 2;
}
_fifo_lock.unlock();
/* We have made some new samples available to the consumer in work() */
if (to_copy) {
//std::cerr << "+" << std::flush;
_samp_avail.notify_one();
}
/* Indicate overrun, if neccesary */
if (to_copy < num_samples)
std::cerr << "O" << std::flush;
return 0; // TODO: return -1 on error/stop
}
bool airspyhf_source_c::start()
{
if ( ! _dev )
return false;
int ret = airspyhf_start( _dev, _airspyhf_rx_callback, (void *)this );
if ( ret != AIRSPYHF_SUCCESS ) {
std::cerr << "Failed to start RX streaming (" << ret << ")" << std::endl;
return false;
}
return true;
}
bool airspyhf_source_c::stop()
{
if ( ! _dev )
return false;
int ret = airspyhf_stop( _dev );
if ( ret != AIRSPYHF_SUCCESS ) {
std::cerr << "Failed to stop RX streaming (" << ret << ")" << std::endl;
return false;
}
return true;
}
int airspyhf_source_c::work( int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items )
{
gr_complex *out = (gr_complex *)output_items[0];
bool running = false;
if ( _dev )
running = airspyhf_is_streaming( _dev );
if ( ! running )
return WORK_DONE;
std::unique_lock<std::mutex> lock(_fifo_lock);
/* Wait until we have the requested number of samples */
int n_samples_avail = _fifo->size();
while (n_samples_avail < noutput_items) {
_samp_avail.wait(lock);
n_samples_avail = _fifo->size();
}
for(int i = 0; i < noutput_items; ++i) {
out[i] = _fifo->at(0);
_fifo->pop_front();
}
return noutput_items;
}
std::vector<std::string> airspyhf_source_c::get_devices()
{
std::vector<std::string> devices;
std::string label;
int ret;
airspyhf_device *dev = NULL;
ret = airspyhf_open(&dev);
if ( AIRSPYHF_SUCCESS == ret )
{
std::string args = "airspyhf=0,label='AirspyHF'";
devices.push_back( args );
ret = airspyhf_close(dev);
}
return devices;
}
size_t airspyhf_source_c::get_num_channels()
{
return 1;
}
osmosdr::meta_range_t airspyhf_source_c::get_sample_rates()
{
osmosdr::meta_range_t range;
for (size_t i = 0; i < _sample_rates.size(); i++)
range += osmosdr::range_t( _sample_rates[i].first );
return range;
}
double airspyhf_source_c::set_sample_rate( double rate )
{
int ret = AIRSPYHF_SUCCESS;
if (_dev) {
bool found_supported_rate = false;
uint32_t samp_rate_index = 0;
for( unsigned int i = 0; i < _sample_rates.size(); i++ )
{
if( _sample_rates[i].first == rate )
{
samp_rate_index = _sample_rates[i].second;
found_supported_rate = true;
}
}
if ( ! found_supported_rate )
{
throw std::runtime_error(
boost::str( boost::format("Unsupported samplerate: %gM") % (rate/1e6) ) );
}
ret = airspyhf_set_samplerate( _dev, samp_rate_index );
if ( AIRSPYHF_SUCCESS == ret ) {
_sample_rate = rate;
} else {
AIRSPYHF_THROW_ON_ERROR( ret, AIRSPYHF_FUNC_STR( "airspyhf_set_samplerate", rate ) )
}
}
return get_sample_rate();
}
double airspyhf_source_c::get_sample_rate()
{
return _sample_rate;
}
osmosdr::freq_range_t airspyhf_source_c::get_freq_range( size_t chan )
{
osmosdr::freq_range_t range;
range += osmosdr::range_t( 0.0, 260.0e6 );
return range;
}
double airspyhf_source_c::set_center_freq( double freq, size_t chan )
{
int ret;
if (_dev) {
ret = airspyhf_set_freq( _dev, freq );
if ( AIRSPYHF_SUCCESS == ret ) {
_center_freq = freq;
} else {
AIRSPYHF_THROW_ON_ERROR( ret, AIRSPYHF_FUNC_STR( "airspyhf_set_freq", freq ) )
}
}
return get_center_freq( chan );
}
double airspyhf_source_c::get_center_freq( size_t chan )
{
return _center_freq;
}
double airspyhf_source_c::set_freq_corr( double ppm, size_t chan )
{
int ret;
int32_t ppb = (int32_t) (ppm * 1.0e3);
if (_dev) {
ret = airspyhf_set_calibration( _dev, ppb );
if ( AIRSPYHF_SUCCESS == ret ) {
_freq_corr = ppm;
} else {
AIRSPYHF_THROW_ON_ERROR( ret, AIRSPYHF_FUNC_STR( "airspyhf_set_calibration", ppm ) )
}
}
return ppm;
}
double airspyhf_source_c::get_freq_corr( size_t chan )
{
return _freq_corr;
}
std::vector<std::string> airspyhf_source_c::get_gain_names( size_t chan )
{
return {};
}
osmosdr::gain_range_t airspyhf_source_c::get_gain_range( size_t chan )
{
return osmosdr::gain_range_t();
}
osmosdr::gain_range_t airspyhf_source_c::get_gain_range( const std::string & name, size_t chan )
{
return osmosdr::gain_range_t();
}
double airspyhf_source_c::set_gain( double gain, size_t chan )
{
return gain;
}
double airspyhf_source_c::set_gain( double gain, const std::string & name, size_t chan)
{
return gain;
}
double airspyhf_source_c::get_gain( size_t chan )
{
return 0.0;
}
double airspyhf_source_c::get_gain( const std::string & name, size_t chan )
{
return 0.0;
}
std::vector< std::string > airspyhf_source_c::get_antennas( size_t chan )
{
std::vector< std::string > antennas;
antennas += get_antenna( chan );
return antennas;
}
std::string airspyhf_source_c::set_antenna( const std::string & antenna, size_t chan )
{
return get_antenna( chan );
}
std::string airspyhf_source_c::get_antenna( size_t chan )
{
return "RX";
}