2019-12-08 15:07:28 +00:00
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/* -*- c++ -*- */
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/*
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* Copyright 2013 Dimitri Stolnikov <horiz0n@gmx.net>
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* config.h is generated by configure. It contains the results
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* of probing for features, options etc. It should be the first
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* file included in your .cc file.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdexcept>
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#include <iostream>
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#include <algorithm>
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#include <boost/assign.hpp>
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#include <boost/format.hpp>
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#include <boost/algorithm/string.hpp>
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#include <boost/thread/thread.hpp>
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#include <gnuradio/io_signature.h>
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#include "airspyhf_source_c.h"
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#include "arg_helpers.h"
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using namespace boost::assign;
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#define AIRSPYHF_FORMAT_ERROR(ret, msg) \
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boost::str( boost::format(msg " (%1%)") % ret )
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#define AIRSPYHF_THROW_ON_ERROR(ret, msg) \
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if ( ret != AIRSPYHF_SUCCESS ) \
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{ \
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throw std::runtime_error( AIRSPYHF_FORMAT_ERROR(ret, msg) ); \
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}
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#define AIRSPYHF_FUNC_STR(func, arg) \
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boost::str(boost::format(func "(%1%)") % arg) + " has failed"
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airspyhf_source_c_sptr make_airspyhf_source_c (const std::string & args)
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{
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return gnuradio::get_initial_sptr(new airspyhf_source_c (args));
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}
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/*
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* Specify constraints on number of input and output streams.
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* This info is used to construct the input and output signatures
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* (2nd & 3rd args to gr::block's constructor). The input and
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* output signatures are used by the runtime system to
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* check that a valid number and type of inputs and outputs
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* are connected to this block. In this case, we accept
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* only 0 input and 1 output.
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*/
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static const int MIN_IN = 0; // mininum number of input streams
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static const int MAX_IN = 0; // maximum number of input streams
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static const int MIN_OUT = 1; // minimum number of output streams
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static const int MAX_OUT = 1; // maximum number of output streams
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/*
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* The private constructor
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*/
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airspyhf_source_c::airspyhf_source_c (const std::string &args)
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: gr::sync_block ("airspyhf_source_c",
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gr::io_signature::make(MIN_IN, MAX_IN, sizeof (gr_complex)),
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gr::io_signature::make(MIN_OUT, MAX_OUT, sizeof (gr_complex))),
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_dev(NULL),
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_sample_rate(0),
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_center_freq(0),
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_freq_corr(0)
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{
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int ret;
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dict_t dict = params_to_dict(args);
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_dev = NULL;
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ret = airspyhf_open( &_dev );
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AIRSPYHF_THROW_ON_ERROR(ret, "Failed to open Airspy HF+ device")
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uint32_t num_rates;
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airspyhf_get_samplerates(_dev, &num_rates, 0);
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uint32_t *samplerates = (uint32_t *) malloc(num_rates * sizeof(uint32_t));
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airspyhf_get_samplerates(_dev, samplerates, num_rates);
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for (size_t i = 0; i < num_rates; i++)
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_sample_rates.push_back( std::pair<double, uint32_t>( samplerates[i], i ) );
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free(samplerates);
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/* since they may (and will) give us an unsorted array we have to sort it here
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* to play nice with the monotonic requirement of meta-range later on */
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std::sort(_sample_rates.begin(), _sample_rates.end());
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std::cerr << "Using libairspyhf" << AIRSPYHF_VERSION << ", samplerates: ";
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for (size_t i = 0; i < _sample_rates.size(); i++)
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std::cerr << boost::format("%gM ") % (_sample_rates[i].first / 1e6);
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std::cerr << std::endl;
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set_center_freq( (get_freq_range().start() + get_freq_range().stop()) / 2.0 );
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set_sample_rate( get_sample_rates().start() );
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_fifo = new boost::circular_buffer<gr_complex>(5000000);
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if (!_fifo) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"Failed to allocate a sample FIFO!" );
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}
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}
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/*
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* Our virtual destructor.
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*/
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airspyhf_source_c::~airspyhf_source_c ()
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{
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int ret;
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if (_dev) {
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if ( airspyhf_is_streaming( _dev ) )
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{
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ret = airspyhf_stop( _dev );
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if ( ret != AIRSPYHF_SUCCESS )
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{
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std::cerr << AIRSPYHF_FORMAT_ERROR(ret, "Failed to stop RX streaming") << std::endl;
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}
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}
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ret = airspyhf_close( _dev );
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if ( ret != AIRSPYHF_SUCCESS )
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{
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std::cerr << AIRSPYHF_FORMAT_ERROR(ret, "Failed to close AirSpy") << std::endl;
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}
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_dev = NULL;
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}
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if (_fifo)
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{
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delete _fifo;
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_fifo = NULL;
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}
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}
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int airspyhf_source_c::_airspyhf_rx_callback(airspyhf_transfer_t *transfer)
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{
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airspyhf_source_c *obj = (airspyhf_source_c *)transfer->ctx;
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return obj->airspyhf_rx_callback((float *)transfer->samples, transfer->sample_count);
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}
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int airspyhf_source_c::airspyhf_rx_callback(void *samples, int sample_count)
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{
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size_t i, n_avail, to_copy, num_samples = sample_count;
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float *sample = (float *)samples;
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_fifo_lock.lock();
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n_avail = _fifo->capacity() - _fifo->size();
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to_copy = (n_avail < num_samples ? n_avail : num_samples);
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for (i = 0; i < to_copy; i++ )
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{
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/* Push sample to the fifo */
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_fifo->push_back( gr_complex( *sample, *(sample+1) ) );
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/* offset to the next I+Q sample */
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sample += 2;
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}
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_fifo_lock.unlock();
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/* We have made some new samples available to the consumer in work() */
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if (to_copy) {
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//std::cerr << "+" << std::flush;
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_samp_avail.notify_one();
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}
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/* Indicate overrun, if neccesary */
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if (to_copy < num_samples)
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std::cerr << "O" << std::flush;
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return 0; // TODO: return -1 on error/stop
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}
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bool airspyhf_source_c::start()
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{
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if ( ! _dev )
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return false;
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int ret = airspyhf_start( _dev, _airspyhf_rx_callback, (void *)this );
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if ( ret != AIRSPYHF_SUCCESS ) {
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std::cerr << "Failed to start RX streaming (" << ret << ")" << std::endl;
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return false;
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}
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return true;
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}
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bool airspyhf_source_c::stop()
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{
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if ( ! _dev )
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return false;
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int ret = airspyhf_stop( _dev );
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if ( ret != AIRSPYHF_SUCCESS ) {
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std::cerr << "Failed to stop RX streaming (" << ret << ")" << std::endl;
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return false;
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}
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return true;
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}
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int airspyhf_source_c::work( int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items )
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{
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gr_complex *out = (gr_complex *)output_items[0];
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bool running = false;
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if ( _dev )
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running = airspyhf_is_streaming( _dev );
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if ( ! running )
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return WORK_DONE;
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2020-08-02 21:52:10 +00:00
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std::unique_lock<std::mutex> lock(_fifo_lock);
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2019-12-08 15:07:28 +00:00
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/* Wait until we have the requested number of samples */
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int n_samples_avail = _fifo->size();
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while (n_samples_avail < noutput_items) {
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_samp_avail.wait(lock);
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n_samples_avail = _fifo->size();
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}
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for(int i = 0; i < noutput_items; ++i) {
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out[i] = _fifo->at(0);
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_fifo->pop_front();
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}
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return noutput_items;
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}
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std::vector<std::string> airspyhf_source_c::get_devices()
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{
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std::vector<std::string> devices;
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std::string label;
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int ret;
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airspyhf_device *dev = NULL;
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ret = airspyhf_open(&dev);
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if ( AIRSPYHF_SUCCESS == ret )
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{
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std::string args = "airspyhf=0,label='AirspyHF'";
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devices.push_back( args );
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ret = airspyhf_close(dev);
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}
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return devices;
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}
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size_t airspyhf_source_c::get_num_channels()
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{
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return 1;
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}
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osmosdr::meta_range_t airspyhf_source_c::get_sample_rates()
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{
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osmosdr::meta_range_t range;
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for (size_t i = 0; i < _sample_rates.size(); i++)
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range += osmosdr::range_t( _sample_rates[i].first );
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return range;
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}
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double airspyhf_source_c::set_sample_rate( double rate )
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{
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int ret = AIRSPYHF_SUCCESS;
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if (_dev) {
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bool found_supported_rate = false;
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uint32_t samp_rate_index = 0;
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for( unsigned int i = 0; i < _sample_rates.size(); i++ )
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{
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if( _sample_rates[i].first == rate )
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{
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samp_rate_index = _sample_rates[i].second;
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found_supported_rate = true;
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}
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}
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if ( ! found_supported_rate )
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{
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throw std::runtime_error(
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boost::str( boost::format("Unsupported samplerate: %gM") % (rate/1e6) ) );
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}
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ret = airspyhf_set_samplerate( _dev, samp_rate_index );
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if ( AIRSPYHF_SUCCESS == ret ) {
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_sample_rate = rate;
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} else {
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AIRSPYHF_THROW_ON_ERROR( ret, AIRSPYHF_FUNC_STR( "airspyhf_set_samplerate", rate ) )
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}
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}
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return get_sample_rate();
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}
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double airspyhf_source_c::get_sample_rate()
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{
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return _sample_rate;
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}
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osmosdr::freq_range_t airspyhf_source_c::get_freq_range( size_t chan )
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{
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osmosdr::freq_range_t range;
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range += osmosdr::range_t( 0.0, 260.0e6 );
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return range;
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}
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double airspyhf_source_c::set_center_freq( double freq, size_t chan )
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{
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int ret;
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if (_dev) {
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ret = airspyhf_set_freq( _dev, freq );
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if ( AIRSPYHF_SUCCESS == ret ) {
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_center_freq = freq;
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} else {
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AIRSPYHF_THROW_ON_ERROR( ret, AIRSPYHF_FUNC_STR( "airspyhf_set_freq", freq ) )
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}
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}
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return get_center_freq( chan );
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}
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double airspyhf_source_c::get_center_freq( size_t chan )
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{
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return _center_freq;
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}
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double airspyhf_source_c::set_freq_corr( double ppm, size_t chan )
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{
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int ret;
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int32_t ppb = (int32_t) (ppm * 1.0e3);
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if (_dev) {
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ret = airspyhf_set_calibration( _dev, ppb );
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if ( AIRSPYHF_SUCCESS == ret ) {
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_freq_corr = ppm;
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} else {
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AIRSPYHF_THROW_ON_ERROR( ret, AIRSPYHF_FUNC_STR( "airspyhf_set_calibration", ppm ) )
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}
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}
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return ppm;
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}
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double airspyhf_source_c::get_freq_corr( size_t chan )
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{
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return _freq_corr;
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}
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std::vector<std::string> airspyhf_source_c::get_gain_names( size_t chan )
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{
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return {};
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}
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osmosdr::gain_range_t airspyhf_source_c::get_gain_range( size_t chan )
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{
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return osmosdr::gain_range_t();
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}
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osmosdr::gain_range_t airspyhf_source_c::get_gain_range( const std::string & name, size_t chan )
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{
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return osmosdr::gain_range_t();
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}
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double airspyhf_source_c::set_gain( double gain, size_t chan )
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{
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return gain;
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}
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double airspyhf_source_c::set_gain( double gain, const std::string & name, size_t chan)
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{
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return gain;
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}
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double airspyhf_source_c::get_gain( size_t chan )
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{
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return 0.0;
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}
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double airspyhf_source_c::get_gain( const std::string & name, size_t chan )
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{
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return 0.0;
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}
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std::vector< std::string > airspyhf_source_c::get_antennas( size_t chan )
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{
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std::vector< std::string > antennas;
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antennas += get_antenna( chan );
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return antennas;
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}
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std::string airspyhf_source_c::set_antenna( const std::string & antenna, size_t chan )
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{
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return get_antenna( chan );
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}
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std::string airspyhf_source_c::get_antenna( size_t chan )
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{
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return "RX";
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}
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