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-rw-r--r--src/OutputSoapy.cpp287
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diff --git a/src/OutputSoapy.cpp b/src/OutputSoapy.cpp
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-/*
- Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Her Majesty the
- Queen in Right of Canada (Communications Research Center Canada)
-
- Copyright (C) 2017
- Matthias P. Braendli, matthias.braendli@mpb.li
-
- http://opendigitalradio.org
-
-DESCRIPTION:
- It is an output driver using the SoapySDR library that can output to
- many devices.
-*/
-
-/*
- This file is part of ODR-DabMod.
-
- ODR-DabMod 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 of the
- License, or (at your option) any later version.
-
- ODR-DabMod 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 ODR-DabMod. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "OutputSoapy.h"
-#ifdef HAVE_SOAPYSDR
-
-#include <SoapySDR/Errors.hpp>
-#include <deque>
-#include <chrono>
-
-#include "Log.h"
-#include "Utils.h"
-
-#include <stdio.h>
-
-static const size_t FRAMES_MAX_SIZE = 2;
-
-
-using namespace std;
-
-
-
-OutputSoapy::OutputSoapy(OutputSoapyConfig& config) :
- ModOutput(),
- RemoteControllable("soapy"),
- m_conf(config),
- m_device(nullptr)
-{
- RC_ADD_PARAMETER(txgain, "SoapySDR analog daughterboard TX gain");
- RC_ADD_PARAMETER(freq, "SoapySDR transmission frequency");
- RC_ADD_PARAMETER(overflows, "SoapySDR overflow count [r/o]");
- RC_ADD_PARAMETER(underflows, "SoapySDR underflow count [r/o]");
-
- etiLog.level(info) <<
- "OutputSoapy:Creating the device with: " <<
- config.device;
- try
- {
- m_device = SoapySDR::Device::make(config.device);
- stringstream ss;
- ss << "SoapySDR driver=" << m_device->getDriverKey();
- ss << " hardware=" << m_device->getHardwareKey();
- for (const auto &it : m_device->getHardwareInfo())
- {
- ss << " " << it.first << "=" << it.second;
- }
- }
- catch (const std::exception &ex)
- {
- etiLog.level(error) << "Error making SoapySDR device: " <<
- ex.what();
- throw std::runtime_error("Cannot create SoapySDR output");
- }
-
- m_device->setMasterClockRate(config.masterClockRate);
- etiLog.level(info) << "SoapySDR master clock rate set to " <<
- m_device->getMasterClockRate()/1000.0 << " kHz";
-
- m_device->setSampleRate(SOAPY_SDR_TX, 0, m_conf.sampleRate);
- etiLog.level(info) << "OutputSoapySDR:Actual TX rate: " <<
- m_device->getSampleRate(SOAPY_SDR_TX, 0) / 1000.0 <<
- " ksps.";
-
- m_device->setFrequency(SOAPY_SDR_TX, 0, m_conf.frequency);
- m_conf.frequency = m_device->getFrequency(SOAPY_SDR_TX, 0);
- etiLog.level(info) << "OutputSoapySDR:Actual frequency: " <<
- m_conf.frequency / 1000.0 <<
- " kHz.";
-
- m_device->setGain(SOAPY_SDR_TX, 0, m_conf.txgain);
- etiLog.level(info) << "OutputSoapySDR:Actual tx gain: " <<
- m_device->getGain(SOAPY_SDR_TX, 0);
-
-}
-
-OutputSoapy::~OutputSoapy()
-{
- m_worker.stop();
- if (m_device != nullptr) {
- SoapySDR::Device::unmake(m_device);
- }
-}
-
-void SoapyWorker::stop()
-{
- running = false;
- queue.push({});
- if (m_thread.joinable()) {
- m_thread.join();
- }
-}
-
-void SoapyWorker::start(SoapySDR::Device *device)
-{
- m_device = device;
- underflows = 0;
- overflows = 0;
- running = true;
- m_thread = std::thread(&SoapyWorker::process_start, this);
-}
-
-void SoapyWorker::process_start()
-{
- // Set thread priority to realtime
- if (int ret = set_realtime_prio(1)) {
- etiLog.level(error) << "Could not set priority for SoapySDR worker:" << ret;
- }
-
- set_thread_name("soapyworker");
-
- std::vector<size_t> channels;
- channels.push_back(0);
- auto stream = m_device->setupStream(SOAPY_SDR_TX, "CF32", channels);
- m_device->activateStream(stream);
- process(stream);
- m_device->closeStream(stream);
- running = false;
- etiLog.level(warn) << "SoapySDR worker terminated";
-}
-
-void SoapyWorker::process(SoapySDR::Stream *stream)
-{
- while (running) {
- struct SoapyWorkerFrameData frame;
- queue.wait_and_pop(frame);
-
- // The frame buffer contains bytes representing FC32 samples
- const complexf *buf = reinterpret_cast<complexf*>(frame.buf.data());
- const size_t numSamples = frame.buf.size() / sizeof(complexf);
- if ((frame.buf.size() % sizeof(complexf)) != 0) {
- throw std::runtime_error("OutputSoapy: invalid buffer size");
- }
-
- // Stream MTU is in samples, not bytes.
- const size_t mtu = m_device->getStreamMTU(stream);
-
- size_t num_acc_samps = 0;
- while (running && (num_acc_samps < numSamples)) {
- const void *buffs[1];
- buffs[0] = buf + num_acc_samps;
-
- const size_t samps_to_send = std::min(numSamples - num_acc_samps, mtu);
-
- int flags = 0;
-
- auto ret = m_device->writeStream(stream, buffs, samps_to_send, flags);
-
- if (ret == SOAPY_SDR_TIMEOUT) {
- continue;
- }
- else if (ret == SOAPY_SDR_OVERFLOW) {
- overflows++;
- continue;
- }
- else if (ret == SOAPY_SDR_UNDERFLOW) {
- underflows++;
- continue;
- }
-
- if (ret < 0) {
- etiLog.level(error) << "Unexpected stream error " <<
- SoapySDR::errToStr(ret);
- running = false;
- }
-
- num_acc_samps += ret;
- }
- }
-}
-
-int OutputSoapy::process(Buffer* dataIn)
-{
- if (first_run) {
- m_worker.start(m_device);
- first_run = false;
- }
- else if (!m_worker.running) {
- etiLog.level(error) << "OutputSoapy: worker thread died";
- throw std::runtime_error("Fault in OutputSoapy");
- }
-
- SoapyWorkerFrameData frame;
- m_eti_source->calculateTimestamp(frame.ts);
-
-
- if (frame.ts.fct == -1) {
- etiLog.level(info) <<
- "OutputSoapy: dropping one frame with invalid FCT";
- }
- else {
- const uint8_t* pInData = reinterpret_cast<uint8_t*>(dataIn->getData());
- frame.buf.resize(dataIn->getLength());
- std::copy(pInData, pInData + dataIn->getLength(),
- frame.buf.begin());
- m_worker.queue.push_wait_if_full(frame, FRAMES_MAX_SIZE);
- }
-
- return dataIn->getLength();
-}
-
-
-void OutputSoapy::setETISource(EtiSource *etiSource)
-{
- m_eti_source = etiSource;
-}
-
-void OutputSoapy::set_parameter(const string& parameter, const string& value)
-{
- stringstream ss(value);
- ss.exceptions ( stringstream::failbit | stringstream::badbit );
-
- if (parameter == "txgain") {
- ss >> m_conf.txgain;
- m_device->setGain(SOAPY_SDR_TX, 0, m_conf.txgain);
- }
- else if (parameter == "freq") {
- ss >> m_conf.frequency;
- m_device->setFrequency(SOAPY_SDR_TX, 0, m_conf.frequency);
- m_conf.frequency = m_device->getFrequency(SOAPY_SDR_TX, 0);
- }
- else if (parameter == "underflows") {
- throw ParameterError("Parameter 'underflows' is read-only");
- }
- else if (parameter == "overflows") {
- throw ParameterError("Parameter 'overflows' is read-only");
- }
- else {
- stringstream ss;
- ss << "Parameter '" << parameter
- << "' is not exported by controllable " << get_rc_name();
- throw ParameterError(ss.str());
- }
-}
-
-const string OutputSoapy::get_parameter(const string& parameter) const
-{
- stringstream ss;
- if (parameter == "txgain") {
- ss << m_conf.txgain;
- }
- else if (parameter == "freq") {
- ss << m_conf.frequency;
- }
- else if (parameter == "underflows") {
- ss << m_worker.underflows;
- }
- else if (parameter == "overflows") {
- ss << m_worker.overflows;
- }
- else {
- ss << "Parameter '" << parameter <<
- "' is not exported by controllable " << get_rc_name();
- throw ParameterError(ss.str());
- }
- return ss.str();
-}
-
-#endif // HAVE_SOAPYSDR
-
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