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622 lines
20 KiB
C++
622 lines
20 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015 F4EXB //
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// written by Edouard Griffiths //
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// //
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// This program 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 as version 3 of the License, or //
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// //
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// This program 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 V3 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 this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QUdpSocket>
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#include <QHostAddress>
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#include "dsp/downchannelizer.h"
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#include "dsp/dspengine.h"
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#include "util/db.h"
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#include "udpsrcgui.h"
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#include "udpsrc.h"
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const Real UDPSrc::m_agcTarget = 16384.0f;
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcConfigure, Message)
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcConfigureImmediate, Message)
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcSpectrum, Message)
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UDPSrc::UDPSrc(MessageQueue* uiMessageQueue, UDPSrcGUI* udpSrcGUI, BasebandSampleSink* spectrum) :
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m_outMovingAverage(480, 1e-10),
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m_inMovingAverage(480, 1e-10),
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m_amMovingAverage(1200, 1e-10),
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m_audioFifo(24000),
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m_squelchOpen(false),
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m_squelchOpenCount(0),
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m_squelchCloseCount(0),
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m_squelchGate(4800),
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m_squelchRelease(4800),
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m_agc(9600, m_agcTarget, 1e-6),
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m_settingsMutex(QMutex::Recursive)
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{
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setObjectName("UDPSrc");
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m_udpBuffer = new UDPSink<Sample>(this, udpBlockSize, m_config.m_udpPort);
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m_udpBufferMono = new UDPSink<FixReal>(this, udpBlockSize, m_config.m_udpPort);
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m_audioSocket = new QUdpSocket(this);
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m_udpAudioBuf = new char[m_udpAudioPayloadSize];
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m_audioBuffer.resize(1<<9);
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m_audioBufferFill = 0;
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m_nco.setFreq(0, m_config.m_inputSampleRate);
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m_interpolator.create(16, m_config.m_inputSampleRate, m_config.m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_config.m_inputSampleRate / m_config.m_outputSampleRate;
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m_uiMessageQueue = uiMessageQueue;
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m_udpSrcGUI = udpSrcGUI;
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m_spectrum = spectrum;
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m_spectrumEnabled = false;
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m_nextSSBId = 0;
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m_nextS16leId = 0;
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m_last = 0;
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m_this = 0;
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m_scale = 0;
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m_magsq = 0;
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m_inMagsq = 0;
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UDPFilter = new fftfilt(0.0, (m_config.m_rfBandwidth / 2.0) / m_config.m_outputSampleRate, udpBlockSize);
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m_phaseDiscri.setFMScaling((float) m_config. m_outputSampleRate / (2.0f * m_config.m_fmDeviation));
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if (m_audioSocket->bind(QHostAddress::LocalHost, m_config.m_audioPort))
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{
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qDebug("UDPSrc::UDPSrc: bind audio socket to port %d", m_config.m_audioPort);
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connect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()), Qt::QueuedConnection);
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}
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else
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{
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qWarning("UDPSrc::UDPSrc: cannot bind audio port");
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}
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m_agc.setClampMax(32768.0*32768.0);
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m_agc.setClamping(true);
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//DSPEngine::instance()->addAudioSink(&m_audioFifo);
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}
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UDPSrc::~UDPSrc()
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{
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delete m_audioSocket;
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delete m_udpBuffer;
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delete m_udpBufferMono;
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delete[] m_udpAudioBuf;
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if (UDPFilter) delete UDPFilter;
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if (m_running.m_audioActive) DSPEngine::instance()->removeAudioSink(&m_audioFifo);
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}
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/** what needs the "apply" button validation */
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void UDPSrc::configure(MessageQueue* messageQueue,
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SampleFormat sampleFormat,
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Real outputSampleRate,
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Real rfBandwidth,
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int fmDeviation,
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const QString& udpAddress,
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int udpPort,
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int audioPort,
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bool force)
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{
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Message* cmd = MsgUDPSrcConfigure::create(sampleFormat,
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outputSampleRate,
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rfBandwidth,
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fmDeviation,
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udpAddress,
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udpPort,
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audioPort,
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force);
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messageQueue->push(cmd);
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}
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/** changes applied immediately */
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void UDPSrc::configureImmediate(MessageQueue* messageQueue,
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bool audioActive,
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bool audioStereo,
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Real boost,
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int volume,
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Real squelchDB,
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Real squelchGate,
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bool squelchEnabled,
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bool agc,
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bool force)
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{
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Message* cmd = MsgUDPSrcConfigureImmediate::create(
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audioActive,
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audioStereo,
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boost,
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volume,
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squelchDB,
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squelchGate,
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squelchEnabled,
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agc,
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force);
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messageQueue->push(cmd);
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}
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void UDPSrc::setSpectrum(MessageQueue* messageQueue, bool enabled)
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{
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Message* cmd = MsgUDPSrcSpectrum::create(enabled);
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messageQueue->push(cmd);
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}
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void UDPSrc::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly)
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{
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Complex ci;
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fftfilt::cmplx* sideband;
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double l, r;
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m_sampleBuffer.clear();
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m_settingsMutex.lock();
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for(SampleVector::const_iterator it = begin; it < end; ++it)
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{
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Complex c(it->real(), it->imag());
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c *= m_nco.nextIQ();
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if(m_interpolator.decimate(&m_sampleDistanceRemain, c, &ci))
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{
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double inMagSq;
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double agcFactor = 1.0;
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if ((m_running.m_agc) &&
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(m_running.m_sampleFormat != FormatNFM) &&
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(m_running.m_sampleFormat != FormatNFMMono) &&
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(m_running.m_sampleFormat != FormatS16LE))
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{
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agcFactor = m_agc.feedAndGetValue(ci);
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inMagSq = m_agc.getMagSq();
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}
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else
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{
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inMagSq = ci.real()*ci.real() + ci.imag()*ci.imag();
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}
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m_inMovingAverage.feed(inMagSq / (1<<30));
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m_inMagsq = m_inMovingAverage.average();
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Sample ss(ci.real(), ci.imag());
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m_sampleBuffer.push_back(ss);
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m_sampleDistanceRemain += m_running.m_inputSampleRate / m_running.m_outputSampleRate;
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calculateSquelch(m_inMagsq);
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if (m_running.m_sampleFormat == FormatLSB) // binaural LSB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, false);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? sideband[i].real() * m_running.m_gain : 0;
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r = m_squelchOpen ? sideband[i].imag() * m_running.m_gain : 0;
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m_udpBuffer->write(Sample(l, r));
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m_outMovingAverage.feed((l*l + r*r) / (1<<30));
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}
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}
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}
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if (m_running.m_sampleFormat == FormatUSB) // binaural USB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, true);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? sideband[i].real() * m_running.m_gain : 0;
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r = m_squelchOpen ? sideband[i].imag() * m_running.m_gain : 0;
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m_udpBuffer->write(Sample(l, r));
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m_outMovingAverage.feed((l*l + r*r) / (1<<30));
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}
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}
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}
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else if (m_running.m_sampleFormat == FormatNFM)
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{
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double demod = m_squelchOpen ? 32768.0 * m_phaseDiscri.phaseDiscriminator(ci) * m_running.m_gain : 0;
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m_udpBuffer->write(Sample(demod, demod));
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m_outMovingAverage.feed((demod * demod) / (1<<30));
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}
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else if (m_running.m_sampleFormat == FormatNFMMono)
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{
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FixReal demod = m_squelchOpen ? (FixReal) (32768.0f * m_phaseDiscri.phaseDiscriminator(ci) * m_running.m_gain) : 0;
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m_udpBufferMono->write(demod);
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m_outMovingAverage.feed((demod * demod) / 1073741824.0);
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}
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else if (m_running.m_sampleFormat == FormatLSBMono) // Monaural LSB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, false);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? (sideband[i].real() + sideband[i].imag()) * 0.7 * m_running.m_gain : 0;
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m_udpBufferMono->write(l);
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m_outMovingAverage.feed((l * l) / (1<<30));
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}
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}
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}
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else if (m_running.m_sampleFormat == FormatUSBMono) // Monaural USB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, true);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? (sideband[i].real() + sideband[i].imag()) * 0.7 * m_running.m_gain : 0;
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m_udpBufferMono->write(l);
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m_outMovingAverage.feed((l * l) / (1<<30));
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}
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}
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}
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else if (m_running.m_sampleFormat == FormatAMMono)
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{
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FixReal demod = m_squelchOpen ? (FixReal) (sqrt(inMagSq) * agcFactor * m_running.m_gain) : 0;
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m_udpBufferMono->write(demod);
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m_outMovingAverage.feed((demod * demod) / 1073741824.0);
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}
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else if (m_running.m_sampleFormat == FormatAMNoDCMono)
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{
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if (m_squelchOpen)
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{
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double demodf = sqrt(inMagSq);
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m_amMovingAverage.feed(demodf);
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FixReal demod = (FixReal) ((demodf - m_amMovingAverage.average()) * agcFactor * m_running.m_gain);
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m_udpBufferMono->write(demod);
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m_outMovingAverage.feed((demod * demod) / 1073741824.0);
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}
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else
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{
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m_udpBufferMono->write(0);
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m_outMovingAverage.feed(0);
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}
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}
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else if (m_running.m_sampleFormat == FormatAMBPFMono)
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{
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if (m_squelchOpen)
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{
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double demodf = sqrt(inMagSq);
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demodf = m_bandpass.filter(demodf);
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demodf /= 301.0;
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FixReal demod = (FixReal) (demodf * agcFactor * m_running.m_gain);
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m_udpBufferMono->write(demod);
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m_outMovingAverage.feed((demod * demod) / 1073741824.0);
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}
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else
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{
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m_udpBufferMono->write(0);
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m_outMovingAverage.feed(0);
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}
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}
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else // Raw I/Q samples
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{
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if (m_squelchOpen)
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{
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Sample s(ci.real() * m_running.m_gain, ci.imag() * m_running.m_gain);
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m_udpBuffer->write(s);
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m_outMovingAverage.feed((inMagSq*m_running.m_gain*m_running.m_gain) / (1<<30));
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}
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else
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{
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Sample s(0, 0);
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m_udpBuffer->write(s);
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m_outMovingAverage.feed(0);
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}
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}
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m_magsq = m_outMovingAverage.average();
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}
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}
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//qDebug() << "UDPSrc::feed: " << m_sampleBuffer.size() * 4;
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if((m_spectrum != 0) && (m_spectrumEnabled))
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{
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m_spectrum->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), positiveOnly);
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}
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m_settingsMutex.unlock();
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}
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void UDPSrc::start()
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{
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m_phaseDiscri.reset();
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}
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void UDPSrc::stop()
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{
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}
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bool UDPSrc::handleMessage(const Message& cmd)
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{
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qDebug() << "UDPSrc::handleMessage";
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if (DownChannelizer::MsgChannelizerNotification::match(cmd))
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{
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DownChannelizer::MsgChannelizerNotification& notif = (DownChannelizer::MsgChannelizerNotification&) cmd;
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m_config.m_inputSampleRate = notif.getSampleRate();
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m_config.m_inputFrequencyOffset = notif.getFrequencyOffset();
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apply(false);
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qDebug() << "UDPSrc::handleMessage: MsgChannelizerNotification: m_inputSampleRate: " << m_config.m_inputSampleRate
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<< " frequencyOffset: " << notif.getFrequencyOffset();
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return true;
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}
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else if (MsgUDPSrcConfigureImmediate::match(cmd))
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{
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MsgUDPSrcConfigureImmediate& cfg = (MsgUDPSrcConfigureImmediate&) cmd;
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m_config.m_audioActive = cfg.getAudioActive();
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m_config.m_audioStereo = cfg.getAudioStereo();
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m_config.m_gain = cfg.getGain();
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m_config.m_volume = cfg.getVolume();
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m_config.m_squelch = CalcDb::powerFromdB(cfg.getSquelchDB());
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m_config.m_squelchGate = cfg.getSquelchGate();
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m_config.m_squelchEnabled = cfg.getSquelchEnabled();
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m_config.m_agc = cfg.getAGC();
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apply(cfg.getForce());
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qDebug() << "UDPSrc::handleMessage: MsgUDPSrcConfigureImmediate: "
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<< " m_audioActive: " << m_config.m_audioActive
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<< " m_audioStereo: " << m_config.m_audioStereo
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<< " m_gain: " << m_config.m_gain
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<< " m_squelchEnabled: " << m_config.m_squelchEnabled
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<< " m_squelch: " << m_config.m_squelch
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<< " getSquelchDB: " << cfg.getSquelchDB()
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<< " m_squelchGate" << m_config.m_squelchGate
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<< " m_agc" << m_config.m_agc;
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return true;
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}
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else if (MsgUDPSrcConfigure::match(cmd))
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{
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MsgUDPSrcConfigure& cfg = (MsgUDPSrcConfigure&) cmd;
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m_config.m_sampleFormat = cfg.getSampleFormat();
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m_config.m_outputSampleRate = cfg.getOutputSampleRate();
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m_config.m_rfBandwidth = cfg.getRFBandwidth();
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m_config.m_udpAddressStr = cfg.getUDPAddress();
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m_config.m_udpPort = cfg.getUDPPort();
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m_config.m_audioPort = cfg.getAudioPort();
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m_config.m_fmDeviation = cfg.getFMDeviation();
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apply(cfg.getForce());
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qDebug() << "UDPSrc::handleMessage: MsgUDPSrcConfigure: m_sampleFormat: " << m_config.m_sampleFormat
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<< " m_outputSampleRate: " << m_config.m_outputSampleRate
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<< " m_rfBandwidth: " << m_config.m_rfBandwidth
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<< " m_udpAddressStr: " << m_config.m_udpAddressStr
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<< " m_udpPort: " << m_config.m_udpPort
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<< " m_audioPort: " << m_config.m_audioPort;
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return true;
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}
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else if (MsgUDPSrcSpectrum::match(cmd))
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{
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MsgUDPSrcSpectrum& spc = (MsgUDPSrcSpectrum&) cmd;
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m_spectrumEnabled = spc.getEnabled();
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qDebug() << "UDPSrc::handleMessage: MsgUDPSrcSpectrum: m_spectrumEnabled: " << m_spectrumEnabled;
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return true;
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}
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else
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{
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if(m_spectrum != 0)
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{
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return m_spectrum->handleMessage(cmd);
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}
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else
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{
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return false;
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}
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}
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}
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void UDPSrc::apply(bool force)
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{
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m_settingsMutex.lock();
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if ((m_config.m_inputSampleRate != m_running.m_inputSampleRate) ||
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(m_config.m_inputFrequencyOffset != m_running.m_inputFrequencyOffset) ||
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(m_config.m_rfBandwidth != m_running.m_rfBandwidth) ||
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(m_config.m_outputSampleRate != m_running.m_outputSampleRate) || force)
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{
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m_nco.setFreq(-m_config.m_inputFrequencyOffset, m_config.m_inputSampleRate);
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m_interpolator.create(16, m_config.m_inputSampleRate, m_config.m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_config.m_inputSampleRate / m_config.m_outputSampleRate;
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if ((m_config.m_sampleFormat == FormatLSB) ||
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(m_config.m_sampleFormat == FormatLSBMono) ||
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(m_config.m_sampleFormat == FormatUSB) ||
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(m_config.m_sampleFormat == FormatUSBMono))
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{
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m_squelchGate = m_config.m_outputSampleRate * 0.05;
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}
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else
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{
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m_squelchGate = m_config.m_outputSampleRate * m_config.m_squelchGate;
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}
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m_squelchRelease = m_config.m_outputSampleRate * m_config.m_squelchGate;
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initSquelch(m_squelchOpen);
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m_agc.resize(m_config.m_outputSampleRate * 0.2, m_agcTarget); // Fixed 200 ms
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m_agc.setStepDownDelay( m_config.m_outputSampleRate * (m_config.m_squelchGate == 0 ? 0.01 : m_config.m_squelchGate));
|
|
m_agc.setGate(m_config.m_outputSampleRate * 0.05);
|
|
|
|
m_bandpass.create(301, m_config.m_outputSampleRate, 300.0, m_config.m_rfBandwidth / 2.0f);
|
|
|
|
m_inMovingAverage.resize(m_config.m_outputSampleRate * 0.01, 1e-10); // 10 ms
|
|
m_amMovingAverage.resize(m_config.m_outputSampleRate * 0.005, 1e-10); // 5 ms
|
|
m_outMovingAverage.resize(m_config.m_outputSampleRate * 0.01, 1e-10); // 10 ms
|
|
}
|
|
|
|
if ((m_config.m_audioActive != m_running.m_audioActive) || force)
|
|
{
|
|
if (m_config.m_audioActive)
|
|
{
|
|
m_audioBufferFill = 0;
|
|
DSPEngine::instance()->addAudioSink(&m_audioFifo);
|
|
}
|
|
else
|
|
{
|
|
DSPEngine::instance()->removeAudioSink(&m_audioFifo);
|
|
}
|
|
}
|
|
|
|
if ((m_config.m_squelchGate != m_running.m_squelchGate) || force)
|
|
{
|
|
if ((m_config.m_sampleFormat == FormatLSB) ||
|
|
(m_config.m_sampleFormat == FormatLSBMono) ||
|
|
(m_config.m_sampleFormat == FormatUSB) ||
|
|
(m_config.m_sampleFormat == FormatUSBMono))
|
|
{
|
|
m_squelchGate = m_config.m_outputSampleRate * 0.05;
|
|
}
|
|
else
|
|
{
|
|
m_squelchGate = m_config.m_outputSampleRate * m_config.m_squelchGate;
|
|
}
|
|
|
|
m_squelchRelease = m_config.m_outputSampleRate * m_config.m_squelchGate;
|
|
initSquelch(m_squelchOpen);
|
|
m_agc.setStepDownDelay(m_config.m_outputSampleRate * (m_config.m_squelchGate == 0 ? 0.01 : m_config.m_squelchGate)); // same delay for up and down
|
|
}
|
|
|
|
if ((m_config.m_squelch != m_running.m_squelch) || force)
|
|
{
|
|
m_agc.setThreshold(m_config.m_squelch*(1<<23));
|
|
}
|
|
|
|
if ((m_config.m_udpAddressStr != m_running.m_udpAddressStr) || force)
|
|
{
|
|
m_udpBuffer->setAddress(m_config.m_udpAddressStr);
|
|
m_udpBufferMono->setAddress(m_config.m_udpAddressStr);
|
|
}
|
|
|
|
if ((m_config.m_udpPort != m_running.m_udpPort) || force)
|
|
{
|
|
m_udpBuffer->setPort(m_config.m_udpPort);
|
|
m_udpBufferMono->setPort(m_config.m_udpPort);
|
|
}
|
|
|
|
if ((m_config.m_audioPort != m_running.m_audioPort) || force)
|
|
{
|
|
disconnect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()));
|
|
delete m_audioSocket;
|
|
m_audioSocket = new QUdpSocket(this);
|
|
|
|
if (m_audioSocket->bind(QHostAddress::LocalHost, m_config.m_audioPort))
|
|
{
|
|
connect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()), Qt::QueuedConnection);
|
|
qDebug("UDPSrc::handleMessage: audio socket bound to port %d", m_config.m_audioPort);
|
|
}
|
|
else
|
|
{
|
|
qWarning("UDPSrc::handleMessage: cannot bind audio socket");
|
|
}
|
|
}
|
|
|
|
if ((m_config.m_fmDeviation != m_running.m_fmDeviation) || force)
|
|
{
|
|
m_phaseDiscri.setFMScaling((float) m_config.m_outputSampleRate / (2.0f * m_config.m_fmDeviation));
|
|
}
|
|
|
|
m_settingsMutex.unlock();
|
|
|
|
m_running = m_config;
|
|
}
|
|
|
|
void UDPSrc::audioReadyRead()
|
|
{
|
|
while (m_audioSocket->hasPendingDatagrams())
|
|
{
|
|
qint64 pendingDataSize = m_audioSocket->pendingDatagramSize();
|
|
qint64 udpReadBytes = m_audioSocket->readDatagram(m_udpAudioBuf, pendingDataSize, 0, 0);
|
|
//qDebug("UDPSrc::audioReadyRead: %lld", udpReadBytes);
|
|
|
|
if (m_running.m_audioActive)
|
|
{
|
|
if (m_running.m_audioStereo)
|
|
{
|
|
for (int i = 0; i < udpReadBytes - 3; i += 4)
|
|
{
|
|
qint16 l_sample = (qint16) *(&m_udpAudioBuf[i]);
|
|
qint16 r_sample = (qint16) *(&m_udpAudioBuf[i+2]);
|
|
m_audioBuffer[m_audioBufferFill].l = l_sample * m_running.m_volume;
|
|
m_audioBuffer[m_audioBufferFill].r = r_sample * m_running.m_volume;
|
|
++m_audioBufferFill;
|
|
|
|
if (m_audioBufferFill >= m_audioBuffer.size())
|
|
{
|
|
uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
|
|
|
|
if (res != m_audioBufferFill)
|
|
{
|
|
qDebug("UDPSrc::audioReadyRead: (stereo) lost %u samples", m_audioBufferFill - res);
|
|
}
|
|
|
|
m_audioBufferFill = 0;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (int i = 0; i < udpReadBytes - 1; i += 2)
|
|
{
|
|
qint16 sample = (qint16) *(&m_udpAudioBuf[i]);
|
|
m_audioBuffer[m_audioBufferFill].l = sample * m_running.m_volume;
|
|
m_audioBuffer[m_audioBufferFill].r = sample * m_running.m_volume;
|
|
++m_audioBufferFill;
|
|
|
|
if (m_audioBufferFill >= m_audioBuffer.size())
|
|
{
|
|
uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
|
|
|
|
if (res != m_audioBufferFill)
|
|
{
|
|
qDebug("UDPSrc::audioReadyRead: (mono) lost %u samples", m_audioBufferFill - res);
|
|
}
|
|
|
|
m_audioBufferFill = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 0) != m_audioBufferFill)
|
|
{
|
|
qDebug("UDPSrc::audioReadyRead: lost samples");
|
|
}
|
|
|
|
m_audioBufferFill = 0;
|
|
}
|
|
}
|
|
|
|
//qDebug("UDPSrc::audioReadyRead: done");
|
|
}
|