sdrangel/plugins/channelrx/demodwfm/wfmdemod.cpp

627 lines
23 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// //
// This program 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 as version 3 of the License, or //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <complex.h>
#include <QTime>
#include <QDebug>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QBuffer>
#include "SWGChannelSettings.h"
#include "SWGWFMDemodSettings.h"
#include "SWGChannelReport.h"
#include "SWGWFMDemodReport.h"
#include <dsp/downchannelizer.h>
#include "dsp/threadedbasebandsamplesink.h"
#include "device/devicesourceapi.h"
#include "audio/audiooutput.h"
#include "dsp/dspengine.h"
#include "dsp/dspcommands.h"
#include "util/db.h"
#include "wfmdemod.h"
MESSAGE_CLASS_DEFINITION(WFMDemod::MsgConfigureWFMDemod, Message)
MESSAGE_CLASS_DEFINITION(WFMDemod::MsgConfigureChannelizer, Message)
const QString WFMDemod::m_channelIdURI = "sdrangel.channel.wfmdemod";
const QString WFMDemod::m_channelId = "WFMDemod";
const int WFMDemod::m_udpBlockSize = 512;
WFMDemod::WFMDemod(DeviceSourceAPI* deviceAPI) :
ChannelSinkAPI(m_channelIdURI),
m_deviceAPI(deviceAPI),
m_inputSampleRate(384000),
m_inputFrequencyOffset(0),
m_squelchOpen(false),
m_magsq(0.0f),
m_magsqSum(0.0f),
m_magsqPeak(0.0f),
m_magsqCount(0),
m_audioFifo(250000),
m_settingsMutex(QMutex::Recursive)
{
setObjectName(m_channelId);
m_rfFilter = new fftfilt(-50000.0 / 384000.0, 50000.0 / 384000.0, rfFilterFftLength);
m_phaseDiscri.setFMScaling(384000/75000);
m_audioBuffer.resize(16384);
m_audioBufferFill = 0;
DSPEngine::instance()->getAudioDeviceManager()->addAudioSink(&m_audioFifo, getInputMessageQueue());
m_audioSampleRate = DSPEngine::instance()->getAudioDeviceManager()->getOutputSampleRate();
applyChannelSettings(m_inputSampleRate, m_inputFrequencyOffset, true);
applySettings(m_settings, true);
m_channelizer = new DownChannelizer(this);
m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
m_deviceAPI->addThreadedSink(m_threadedChannelizer);
m_deviceAPI->addChannelAPI(this);
m_networkManager = new QNetworkAccessManager();
connect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
}
WFMDemod::~WFMDemod()
{
disconnect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
delete m_networkManager;
DSPEngine::instance()->getAudioDeviceManager()->removeAudioSink(&m_audioFifo);
m_deviceAPI->removeChannelAPI(this);
m_deviceAPI->removeThreadedSink(m_threadedChannelizer);
delete m_threadedChannelizer;
delete m_channelizer;
delete m_rfFilter;
}
void WFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool firstOfBurst)
{
(void) firstOfBurst;
Complex ci;
fftfilt::cmplx *rf;
int rf_out;
Real demod;
double msq;
float fmDev;
m_settingsMutex.lock();
for (SampleVector::const_iterator it = begin; it != end; ++it)
{
Complex c(it->real(), it->imag());
c *= m_nco.nextIQ();
rf_out = m_rfFilter->runFilt(c, &rf); // filter RF before demod
for (int i = 0 ; i < rf_out; i++)
{
msq = rf[i].real()*rf[i].real() + rf[i].imag()*rf[i].imag();
Real magsq = msq / (SDR_RX_SCALED*SDR_RX_SCALED);
m_magsqSum += magsq;
m_movingAverage(magsq);
if (magsq > m_magsqPeak) {
m_magsqPeak = magsq;
}
m_magsqCount++;
if (magsq >= m_squelchLevel)
{
if (m_squelchState < m_settings.m_rfBandwidth / 10) { // twice attack and decay rate
m_squelchState++;
}
}
else
{
if (m_squelchState > 0) {
m_squelchState--;
}
}
m_squelchOpen = (m_squelchState > (m_settings.m_rfBandwidth / 20));
if (m_squelchOpen && !m_settings.m_audioMute) { // squelch open and not mute
demod = m_phaseDiscri.phaseDiscriminatorDelta(rf[i], msq, fmDev);
} else {
demod = 0;
}
Complex e(demod, 0);
if (m_interpolator.decimate(&m_interpolatorDistanceRemain, e, &ci))
{
qint16 sample = (qint16)(ci.real() * 3276.8f * m_settings.m_volume);
m_sampleBuffer.push_back(Sample(sample, sample));
m_audioBuffer[m_audioBufferFill].l = sample;
m_audioBuffer[m_audioBufferFill].r = sample;
++m_audioBufferFill;
if(m_audioBufferFill >= m_audioBuffer.size())
{
uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill);
if (res != m_audioBufferFill) {
qDebug("WFMDemod::feed: %u/%u audio samples written", res, m_audioBufferFill);
}
m_audioBufferFill = 0;
}
m_interpolatorDistanceRemain += m_interpolatorDistance;
}
}
}
if (m_audioBufferFill > 0)
{
uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill);
if (res != m_audioBufferFill) {
qDebug("WFMDemod::feed: %u/%u tail samples written", res, m_audioBufferFill);
}
m_audioBufferFill = 0;
}
m_sampleBuffer.clear();
m_settingsMutex.unlock();
}
void WFMDemod::start()
{
m_squelchState = 0;
m_audioFifo.clear();
m_phaseDiscri.reset();
applyChannelSettings(m_inputSampleRate, m_inputFrequencyOffset, true);
}
void WFMDemod::stop()
{
}
bool WFMDemod::handleMessage(const Message& cmd)
{
if (DownChannelizer::MsgChannelizerNotification::match(cmd))
{
DownChannelizer::MsgChannelizerNotification& notif = (DownChannelizer::MsgChannelizerNotification&) cmd;
qDebug() << "WFMDemod::handleMessage: MsgChannelizerNotification: m_inputSampleRate: " << notif.getSampleRate()
<< " m_inputFrequencyOffset: " << notif.getFrequencyOffset();
applyChannelSettings(notif.getSampleRate(), notif.getFrequencyOffset());
return true;
}
else if (MsgConfigureChannelizer::match(cmd))
{
MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
qDebug() << "WFMDemod::handleMessage: MsgConfigureChannelizer:"
<< " sampleRate: " << cfg.getSampleRate()
<< " inputFrequencyOffset: " << cfg.getCenterFrequency();
m_channelizer->configure(m_channelizer->getInputMessageQueue(),
cfg.getSampleRate(),
cfg.getCenterFrequency());
return true;
}
else if (MsgConfigureWFMDemod::match(cmd))
{
MsgConfigureWFMDemod& cfg = (MsgConfigureWFMDemod&) cmd;
qDebug("WFMDemod::handleMessage: MsgConfigureWFMDemod");
applySettings(cfg.getSettings(), cfg.getForce());
return true;
}
else if (BasebandSampleSink::MsgThreadedSink::match(cmd))
{
BasebandSampleSink::MsgThreadedSink& cfg = (BasebandSampleSink::MsgThreadedSink&) cmd;
const QThread *thread = cfg.getThread();
qDebug("WFMDemod::handleMessage: BasebandSampleSink::MsgThreadedSink: %p", thread);
return true;
}
else if (DSPConfigureAudio::match(cmd))
{
DSPConfigureAudio& cfg = (DSPConfigureAudio&) cmd;
uint32_t sampleRate = cfg.getSampleRate();
qDebug() << "WFMDemod::handleMessage: DSPConfigureAudio:"
<< " sampleRate: " << sampleRate;
if (sampleRate != m_audioSampleRate) {
applyAudioSampleRate(sampleRate);
}
return true;
}
else if (DSPSignalNotification::match(cmd))
{
return true;
}
else
{
return false;
}
}
void WFMDemod::applyAudioSampleRate(int sampleRate)
{
qDebug("WFMDemod::applyAudioSampleRate: %d", sampleRate);
m_settingsMutex.lock();
m_interpolator.create(16, m_inputSampleRate, m_settings.m_afBandwidth);
m_interpolatorDistanceRemain = (Real) m_inputSampleRate / sampleRate;
m_interpolatorDistance = (Real) m_inputSampleRate / (Real) sampleRate;
m_settingsMutex.unlock();
m_audioSampleRate = sampleRate;
}
void WFMDemod::applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force)
{
qDebug() << "WFMDemod::applyChannelSettings:"
<< " inputSampleRate: " << inputSampleRate
<< " inputFrequencyOffset: " << inputFrequencyOffset;
if((inputFrequencyOffset != m_inputFrequencyOffset) ||
(inputSampleRate != m_inputSampleRate) || force)
{
m_nco.setFreq(-inputFrequencyOffset, inputSampleRate);
}
if ((inputSampleRate != m_inputSampleRate) || force)
{
qDebug() << "WFMDemod::applyChannelSettings: m_interpolator.create";
m_settingsMutex.lock();
m_interpolator.create(16, inputSampleRate, m_settings.m_afBandwidth);
m_interpolatorDistanceRemain = (Real) inputSampleRate / (Real) m_audioSampleRate;
m_interpolatorDistance = (Real) inputSampleRate / (Real) m_audioSampleRate;
m_settingsMutex.unlock();
qDebug() << "WFMDemod::applySettings: m_rfFilter->create_filter";
Real lowCut = -(m_settings.m_rfBandwidth / 2.0) / inputSampleRate;
Real hiCut = (m_settings.m_rfBandwidth / 2.0) / inputSampleRate;
m_rfFilter->create_filter(lowCut, hiCut);
m_fmExcursion = m_settings.m_rfBandwidth / (Real) inputSampleRate;
m_phaseDiscri.setFMScaling(1.0f/m_fmExcursion);
qDebug("WFMDemod::applySettings: m_fmExcursion: %f", m_fmExcursion);
}
m_inputSampleRate = inputSampleRate;
m_inputFrequencyOffset = inputFrequencyOffset;
}
void WFMDemod::applySettings(const WFMDemodSettings& settings, bool force)
{
qDebug() << "WFMDemod::applySettings:"
<< " m_inputFrequencyOffset: " << settings.m_inputFrequencyOffset
<< " m_rfBandwidth: " << settings.m_rfBandwidth
<< " m_afBandwidth: " << settings.m_afBandwidth
<< " m_volume: " << settings.m_volume
<< " m_squelch: " << settings.m_squelch
<< " m_audioDeviceName: " << settings.m_audioDeviceName
<< " m_audioMute: " << settings.m_audioMute
<< " force: " << force;
QList<QString> reverseAPIKeys;
if((settings.m_inputFrequencyOffset != m_settings.m_inputFrequencyOffset) || force) {
reverseAPIKeys.append("inputFrequencyOffset");
}
if((settings.m_rfBandwidth != m_settings.m_rfBandwidth) || force) {
reverseAPIKeys.append("rfBandwidth");
}
if((settings.m_afBandwidth != m_settings.m_afBandwidth) || force) {
reverseAPIKeys.append("afBandwidth");
}
if((settings.m_volume != m_settings.m_volume) || force) {
reverseAPIKeys.append("volume");
}
if((settings.m_squelch != m_settings.m_squelch) || force) {
reverseAPIKeys.append("squelch");
}
if((settings.m_audioMute != m_settings.m_audioMute) || force) {
reverseAPIKeys.append("audioMute");
}
if((settings.m_audioDeviceName != m_settings.m_audioDeviceName) || force) {
reverseAPIKeys.append("audioDeviceName");
}
if((settings.m_title != m_settings.m_title) || force) {
reverseAPIKeys.append("title");
}
if((settings.m_rgbColor != m_settings.m_rgbColor) || force) {
reverseAPIKeys.append("rgbColor");
}
if((settings.m_afBandwidth != m_settings.m_afBandwidth) ||
(settings.m_rfBandwidth != m_settings.m_rfBandwidth) || force)
{
m_settingsMutex.lock();
qDebug() << "WFMDemod::applySettings: m_interpolator.create";
m_interpolator.create(16, m_inputSampleRate, settings.m_afBandwidth);
m_interpolatorDistanceRemain = (Real) m_inputSampleRate / (Real) m_audioSampleRate;
m_interpolatorDistance = (Real) m_inputSampleRate / (Real) m_audioSampleRate;
qDebug() << "WFMDemod::applySettings: m_rfFilter->create_filter";
Real lowCut = -(settings.m_rfBandwidth / 2.0) / m_inputSampleRate;
Real hiCut = (settings.m_rfBandwidth / 2.0) / m_inputSampleRate;
m_rfFilter->create_filter(lowCut, hiCut);
m_fmExcursion = settings.m_rfBandwidth / (Real) m_inputSampleRate;
m_phaseDiscri.setFMScaling(1.0f/m_fmExcursion);
qDebug("WFMDemod::applySettings: m_fmExcursion: %f", m_fmExcursion);
m_settingsMutex.unlock();
}
if ((settings.m_squelch != m_settings.m_squelch) || force)
{
qDebug() << "WFMDemod::applySettings: set m_squelchLevel";
m_squelchLevel = pow(10.0, settings.m_squelch / 10.0);
}
if ((settings.m_audioDeviceName != m_settings.m_audioDeviceName) || force)
{
AudioDeviceManager *audioDeviceManager = DSPEngine::instance()->getAudioDeviceManager();
int audioDeviceIndex = audioDeviceManager->getOutputDeviceIndex(settings.m_audioDeviceName);
//qDebug("AMDemod::applySettings: audioDeviceName: %s audioDeviceIndex: %d", qPrintable(settings.m_audioDeviceName), audioDeviceIndex);
audioDeviceManager->addAudioSink(&m_audioFifo, getInputMessageQueue(), audioDeviceIndex);
uint32_t audioSampleRate = audioDeviceManager->getOutputSampleRate(audioDeviceIndex);
if (m_audioSampleRate != audioSampleRate) {
applyAudioSampleRate(audioSampleRate);
}
}
if (settings.m_useReverseAPI)
{
bool fullUpdate = ((m_settings.m_useReverseAPI != settings.m_useReverseAPI) && settings.m_useReverseAPI) ||
(m_settings.m_reverseAPIAddress != settings.m_reverseAPIAddress) ||
(m_settings.m_reverseAPIPort != settings.m_reverseAPIPort) ||
(m_settings.m_reverseAPIDeviceIndex != settings.m_reverseAPIDeviceIndex) ||
(m_settings.m_reverseAPIChannelIndex != settings.m_reverseAPIChannelIndex);
webapiReverseSendSettings(reverseAPIKeys, settings, fullUpdate || force);
}
m_settings = settings;
}
QByteArray WFMDemod::serialize() const
{
return m_settings.serialize();
}
bool WFMDemod::deserialize(const QByteArray& data)
{
if (m_settings.deserialize(data))
{
MsgConfigureWFMDemod *msg = MsgConfigureWFMDemod::create(m_settings, true);
m_inputMessageQueue.push(msg);
return true;
}
else
{
m_settings.resetToDefaults();
MsgConfigureWFMDemod *msg = MsgConfigureWFMDemod::create(m_settings, true);
m_inputMessageQueue.push(msg);
return false;
}
}
int WFMDemod::webapiSettingsGet(
SWGSDRangel::SWGChannelSettings& response,
QString& errorMessage)
{
(void) errorMessage;
response.setWfmDemodSettings(new SWGSDRangel::SWGWFMDemodSettings());
response.getWfmDemodSettings()->init();
webapiFormatChannelSettings(response, m_settings);
return 200;
}
int WFMDemod::webapiSettingsPutPatch(
bool force,
const QStringList& channelSettingsKeys,
SWGSDRangel::SWGChannelSettings& response,
QString& errorMessage)
{
(void) errorMessage;
WFMDemodSettings settings = m_settings;
bool frequencyOffsetChanged = false;
if (channelSettingsKeys.contains("inputFrequencyOffset"))
{
settings.m_inputFrequencyOffset = response.getWfmDemodSettings()->getInputFrequencyOffset();
frequencyOffsetChanged = true;
}
if (channelSettingsKeys.contains("rfBandwidth")) {
settings.m_rfBandwidth = response.getWfmDemodSettings()->getRfBandwidth();
}
if (channelSettingsKeys.contains("afBandwidth")) {
settings.m_afBandwidth = response.getWfmDemodSettings()->getAfBandwidth();
}
if (channelSettingsKeys.contains("volume")) {
settings.m_volume = response.getWfmDemodSettings()->getVolume();
}
if (channelSettingsKeys.contains("squelch")) {
settings.m_squelch = response.getWfmDemodSettings()->getSquelch();
}
if (channelSettingsKeys.contains("audioMute")) {
settings.m_audioMute = response.getWfmDemodSettings()->getAudioMute() != 0;
}
if (channelSettingsKeys.contains("rgbColor")) {
settings.m_rgbColor = response.getWfmDemodSettings()->getRgbColor();
}
if (channelSettingsKeys.contains("title")) {
settings.m_title = *response.getWfmDemodSettings()->getTitle();
}
if (channelSettingsKeys.contains("audioDeviceName")) {
settings.m_audioDeviceName = *response.getWfmDemodSettings()->getAudioDeviceName();
}
if (frequencyOffsetChanged)
{
MsgConfigureChannelizer* channelConfigMsg = MsgConfigureChannelizer::create(
requiredBW(settings.m_rfBandwidth), settings.m_inputFrequencyOffset);
m_inputMessageQueue.push(channelConfigMsg);
}
MsgConfigureWFMDemod *msg = MsgConfigureWFMDemod::create(settings, force);
m_inputMessageQueue.push(msg);
qDebug("WFMDemod::webapiSettingsPutPatch: forward to GUI: %p", m_guiMessageQueue);
if (m_guiMessageQueue) // forward to GUI if any
{
MsgConfigureWFMDemod *msgToGUI = MsgConfigureWFMDemod::create(settings, force);
m_guiMessageQueue->push(msgToGUI);
}
webapiFormatChannelSettings(response, settings);
return 200;
}
int WFMDemod::webapiReportGet(
SWGSDRangel::SWGChannelReport& response,
QString& errorMessage)
{
(void) errorMessage;
response.setWfmDemodReport(new SWGSDRangel::SWGWFMDemodReport());
response.getWfmDemodReport()->init();
webapiFormatChannelReport(response);
return 200;
}
void WFMDemod::webapiFormatChannelSettings(SWGSDRangel::SWGChannelSettings& response, const WFMDemodSettings& settings)
{
response.getWfmDemodSettings()->setInputFrequencyOffset(settings.m_inputFrequencyOffset);
response.getWfmDemodSettings()->setRfBandwidth(settings.m_rfBandwidth);
response.getWfmDemodSettings()->setAfBandwidth(settings.m_afBandwidth);
response.getWfmDemodSettings()->setVolume(settings.m_volume);
response.getWfmDemodSettings()->setSquelch(settings.m_squelch);
response.getWfmDemodSettings()->setAudioMute(settings.m_audioMute ? 1 : 0);
response.getWfmDemodSettings()->setRgbColor(settings.m_rgbColor);
if (response.getWfmDemodSettings()->getTitle()) {
*response.getWfmDemodSettings()->getTitle() = settings.m_title;
} else {
response.getWfmDemodSettings()->setTitle(new QString(settings.m_title));
}
if (response.getWfmDemodSettings()->getAudioDeviceName()) {
*response.getWfmDemodSettings()->getAudioDeviceName() = settings.m_audioDeviceName;
} else {
response.getWfmDemodSettings()->setAudioDeviceName(new QString(settings.m_audioDeviceName));
}
}
void WFMDemod::webapiFormatChannelReport(SWGSDRangel::SWGChannelReport& response)
{
double magsqAvg, magsqPeak;
int nbMagsqSamples;
getMagSqLevels(magsqAvg, magsqPeak, nbMagsqSamples);
response.getWfmDemodReport()->setChannelPowerDb(CalcDb::dbPower(magsqAvg));
response.getWfmDemodReport()->setSquelch(m_squelchState > 0 ? 1 : 0);
response.getWfmDemodReport()->setAudioSampleRate(m_audioSampleRate);
response.getWfmDemodReport()->setChannelSampleRate(m_inputSampleRate);
}
void WFMDemod::webapiReverseSendSettings(QList<QString>& channelSettingsKeys, const WFMDemodSettings& settings, bool force)
{
SWGSDRangel::SWGChannelSettings *swgChannelSettings = new SWGSDRangel::SWGChannelSettings();
swgChannelSettings->setTx(0);
swgChannelSettings->setChannelType(new QString("WFMDemod"));
swgChannelSettings->setWfmDemodSettings(new SWGSDRangel::SWGWFMDemodSettings());
SWGSDRangel::SWGWFMDemodSettings *swgWFMDemodSettings = swgChannelSettings->getWfmDemodSettings();
// transfer data that has been modified. When force is on transfer all data except reverse API data
if (channelSettingsKeys.contains("inputFrequencyOffset") || force) {
swgWFMDemodSettings->setInputFrequencyOffset(settings.m_inputFrequencyOffset);
}
if (channelSettingsKeys.contains("rfBandwidth") || force) {
swgWFMDemodSettings->setRfBandwidth(settings.m_rfBandwidth);
}
if (channelSettingsKeys.contains("afBandwidth") || force) {
swgWFMDemodSettings->setAfBandwidth(settings.m_afBandwidth);
}
if (channelSettingsKeys.contains("volume") || force) {
swgWFMDemodSettings->setVolume(settings.m_volume);
}
if (channelSettingsKeys.contains("squelch") || force) {
swgWFMDemodSettings->setSquelch(settings.m_squelch);
}
if (channelSettingsKeys.contains("audioMute") || force) {
swgWFMDemodSettings->setAudioMute(settings.m_audioMute ? 1 : 0);
}
if (channelSettingsKeys.contains("rgbColor") || force) {
swgWFMDemodSettings->setRgbColor(settings.m_rgbColor);
}
if (channelSettingsKeys.contains("title") || force) {
swgWFMDemodSettings->setTitle(new QString(settings.m_title));
}
if (channelSettingsKeys.contains("audioDeviceName") || force) {
swgWFMDemodSettings->setAudioDeviceName(new QString(settings.m_audioDeviceName));
}
QString channelSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/channel/%4/settings")
.arg(settings.m_reverseAPIAddress)
.arg(settings.m_reverseAPIPort)
.arg(settings.m_reverseAPIDeviceIndex)
.arg(settings.m_reverseAPIChannelIndex);
m_networkRequest.setUrl(QUrl(channelSettingsURL));
m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
QBuffer *buffer=new QBuffer();
buffer->open((QBuffer::ReadWrite));
buffer->write(swgChannelSettings->asJson().toUtf8());
buffer->seek(0);
// Always use PATCH to avoid passing reverse API settings
m_networkManager->sendCustomRequest(m_networkRequest, "PATCH", buffer);
delete swgChannelSettings;
}
void WFMDemod::networkManagerFinished(QNetworkReply *reply)
{
QNetworkReply::NetworkError replyError = reply->error();
if (replyError)
{
qWarning() << "WFMDemod::networkManagerFinished:"
<< " error(" << (int) replyError
<< "): " << replyError
<< ": " << reply->errorString();
return;
}
QString answer = reply->readAll();
answer.chop(1); // remove last \n
qDebug("WFMDemod::networkManagerFinished: reply:\n%s", answer.toStdString().c_str());
}