mirror of
https://github.com/f4exb/sdrangel.git
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587 lines
20 KiB
C++
587 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/dspengine.h"
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#include "util/db.h"
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#include "dsp/downchannelizer.h"
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#include "dsp/threadedbasebandsamplesink.h"
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#include "device/devicesourceapi.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::MsgConfigureUDPSrc, Message)
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgConfigureChannelizer, Message)
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcSpectrum, Message)
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UDPSrc::UDPSrc(DeviceSourceAPI *deviceAPI) :
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m_deviceAPI(deviceAPI),
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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_spectrum(0),
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m_squelch(1e-6),
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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_settings.m_udpPort);
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m_udpBufferMono = new UDPSink<FixReal>(this, udpBlockSize, m_settings.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_settings.m_inputSampleRate);
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m_interpolator.create(16, m_settings.m_inputSampleRate, m_settings.m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_settings.m_inputSampleRate / m_settings.m_outputSampleRate;
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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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m_channelizer = new DownChannelizer(this);
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m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
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m_deviceAPI->addThreadedSink(m_threadedChannelizer);
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UDPFilter = new fftfilt(0.0, (m_settings.m_rfBandwidth / 2.0) / m_settings.m_outputSampleRate, udpBlockSize);
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m_phaseDiscri.setFMScaling((float) m_settings. m_outputSampleRate / (2.0f * m_settings.m_fmDeviation));
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if (m_audioSocket->bind(QHostAddress::LocalHost, m_settings.m_audioPort))
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{
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qDebug("UDPSrc::UDPSrc: bind audio socket to port %d", m_settings.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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applySettings(m_settings, true);
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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_settings.m_audioActive) DSPEngine::instance()->removeAudioSink(&m_audioFifo);
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m_deviceAPI->removeThreadedSink(m_threadedChannelizer);
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delete m_threadedChannelizer;
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delete m_channelizer;
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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_settings.m_agc) &&
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(m_settings.m_sampleFormat != UDPSrcSettings::FormatNFM) &&
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(m_settings.m_sampleFormat != UDPSrcSettings::FormatNFMMono) &&
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(m_settings.m_sampleFormat != UDPSrcSettings::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_settings.m_inputSampleRate / m_settings.m_outputSampleRate;
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calculateSquelch(m_inMagsq);
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if (m_settings.m_sampleFormat == UDPSrcSettings::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_settings.m_gain : 0;
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r = m_squelchOpen ? sideband[i].imag() * m_settings.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_settings.m_sampleFormat == UDPSrcSettings::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_settings.m_gain : 0;
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r = m_squelchOpen ? sideband[i].imag() * m_settings.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_settings.m_sampleFormat == UDPSrcSettings::FormatNFM)
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{
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double demod = m_squelchOpen ? 32768.0 * m_phaseDiscri.phaseDiscriminator(ci) * m_settings.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_settings.m_sampleFormat == UDPSrcSettings::FormatNFMMono)
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{
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FixReal demod = m_squelchOpen ? (FixReal) (32768.0f * m_phaseDiscri.phaseDiscriminator(ci) * m_settings.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_settings.m_sampleFormat == UDPSrcSettings::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_settings.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_settings.m_sampleFormat == UDPSrcSettings::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_settings.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_settings.m_sampleFormat == UDPSrcSettings::FormatAMMono)
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{
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FixReal demod = m_squelchOpen ? (FixReal) (sqrt(inMagSq) * agcFactor * m_settings.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_settings.m_sampleFormat == UDPSrcSettings::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_settings.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_settings.m_sampleFormat == UDPSrcSettings::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_settings.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_settings.m_gain, ci.imag() * m_settings.m_gain);
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m_udpBuffer->write(s);
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m_outMovingAverage.feed((inMagSq*m_settings.m_gain*m_settings.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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if (DownChannelizer::MsgChannelizerNotification::match(cmd))
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{
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DownChannelizer::MsgChannelizerNotification& notif = (DownChannelizer::MsgChannelizerNotification&) cmd;
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UDPSrcSettings settings;
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settings.m_inputSampleRate = notif.getSampleRate();
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settings.m_inputFrequencyOffset = notif.getFrequencyOffset();
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//apply(false);
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applySettings(settings);
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qDebug() << "UDPSrc::handleMessage: MsgChannelizerNotification: m_inputSampleRate: " << settings.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 (MsgConfigureChannelizer::match(cmd))
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{
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MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
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m_channelizer->configure(m_channelizer->getInputMessageQueue(),
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cfg.getSampleRate(),
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cfg.getCenterFrequency());
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qDebug() << "UDPSrc::handleMessage: MsgConfigureChannelizer:"
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<< " sampleRate: " << cfg.getSampleRate()
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<< " centerFrequency: " << cfg.getCenterFrequency();
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return true;
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}
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else if (MsgConfigureUDPSrc::match(cmd))
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{
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MsgConfigureUDPSrc& cfg = (MsgConfigureUDPSrc&) cmd;
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UDPSrcSettings settings = cfg.getSettings();
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// These settings are set with DownChannelizer::MsgChannelizerNotification
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settings.m_inputSampleRate = m_settings.m_inputSampleRate;
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settings.m_inputFrequencyOffset = m_settings.m_inputFrequencyOffset;
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applySettings(settings, cfg.getForce());
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qDebug() << "UDPSrc::handleMessage: MsgConfigureUDPSrc: "
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<< " m_inputSampleRate: " << settings.m_inputSampleRate
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<< " m_inputFrequencyOffset: " << settings.m_inputFrequencyOffset
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<< " m_audioActive: " << settings.m_audioActive
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<< " m_audioStereo: " << settings.m_audioStereo
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<< " m_gain: " << settings.m_gain
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<< " m_volume: " << settings.m_volume
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<< " m_squelchEnabled: " << settings.m_squelchEnabled
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<< " m_squelchdB: " << settings.m_squelchdB
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<< " m_squelchGate" << settings.m_squelchGate
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<< " m_agc" << settings.m_agc
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<< " m_sampleFormat: " << settings.m_sampleFormat
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<< " m_outputSampleRate: " << settings.m_outputSampleRate
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<< " m_rfBandwidth: " << settings.m_rfBandwidth
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<< " m_fmDeviation: " << settings.m_fmDeviation
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<< " m_udpAddressStr: " << settings.m_udpAddress
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<< " m_udpPort: " << settings.m_udpPort
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<< " m_audioPort: " << settings.m_audioPort
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<< " force: " << cfg.getForce();
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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::audioReadyRead()
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{
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while (m_audioSocket->hasPendingDatagrams())
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{
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qint64 pendingDataSize = m_audioSocket->pendingDatagramSize();
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qint64 udpReadBytes = m_audioSocket->readDatagram(m_udpAudioBuf, pendingDataSize, 0, 0);
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//qDebug("UDPSrc::audioReadyRead: %lld", udpReadBytes);
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if (m_settings.m_audioActive)
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{
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if (m_settings.m_audioStereo)
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{
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for (int i = 0; i < udpReadBytes - 3; i += 4)
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{
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qint16 l_sample = (qint16) *(&m_udpAudioBuf[i]);
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qint16 r_sample = (qint16) *(&m_udpAudioBuf[i+2]);
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m_audioBuffer[m_audioBufferFill].l = l_sample * m_settings.m_volume;
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m_audioBuffer[m_audioBufferFill].r = r_sample * m_settings.m_volume;
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++m_audioBufferFill;
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if (m_audioBufferFill >= m_audioBuffer.size())
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{
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uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
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if (res != m_audioBufferFill)
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{
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qDebug("UDPSrc::audioReadyRead: (stereo) lost %u samples", m_audioBufferFill - res);
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}
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m_audioBufferFill = 0;
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}
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}
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}
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else
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{
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for (int i = 0; i < udpReadBytes - 1; i += 2)
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{
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qint16 sample = (qint16) *(&m_udpAudioBuf[i]);
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m_audioBuffer[m_audioBufferFill].l = sample * m_settings.m_volume;
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m_audioBuffer[m_audioBufferFill].r = sample * m_settings.m_volume;
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++m_audioBufferFill;
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if (m_audioBufferFill >= m_audioBuffer.size())
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{
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uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
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if (res != m_audioBufferFill)
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{
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qDebug("UDPSrc::audioReadyRead: (mono) lost %u samples", m_audioBufferFill - res);
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}
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m_audioBufferFill = 0;
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}
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}
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}
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if (m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 0) != m_audioBufferFill)
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{
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qDebug("UDPSrc::audioReadyRead: lost samples");
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}
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m_audioBufferFill = 0;
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}
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}
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//qDebug("UDPSrc::audioReadyRead: done");
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}
|
|
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|
void UDPSrc::applySettings(const UDPSrcSettings& settings, bool force)
|
|
{
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|
m_settingsMutex.lock();
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|
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if ((settings.m_inputSampleRate != m_settings.m_inputSampleRate) ||
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|
(settings.m_inputFrequencyOffset != m_settings.m_inputFrequencyOffset) ||
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|
(settings.m_rfBandwidth != m_settings.m_rfBandwidth) ||
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|
(settings.m_outputSampleRate != m_settings.m_outputSampleRate) || force)
|
|
{
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|
m_nco.setFreq(-settings.m_inputFrequencyOffset, settings.m_inputSampleRate);
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|
m_interpolator.create(16, settings.m_inputSampleRate, settings.m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = settings.m_inputSampleRate / settings.m_outputSampleRate;
|
|
|
|
if ((settings.m_sampleFormat == UDPSrcSettings::FormatLSB) ||
|
|
(settings.m_sampleFormat == UDPSrcSettings::FormatLSBMono) ||
|
|
(settings.m_sampleFormat == UDPSrcSettings::FormatUSB) ||
|
|
(settings.m_sampleFormat == UDPSrcSettings::FormatUSBMono))
|
|
{
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|
m_squelchGate = settings.m_outputSampleRate * 0.05;
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|
}
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|
else
|
|
{
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|
m_squelchGate = (settings.m_outputSampleRate * settings.m_squelchGate) / 100;
|
|
}
|
|
|
|
m_squelchRelease = (settings.m_outputSampleRate * settings.m_squelchGate) / 100;
|
|
initSquelch(m_squelchOpen);
|
|
m_agc.resize(settings.m_outputSampleRate * 0.2, m_agcTarget); // Fixed 200 ms
|
|
int stepDownDelay = (settings.m_outputSampleRate * (settings.m_squelchGate == 0 ? 1 : settings.m_squelchGate))/100;
|
|
m_agc.setStepDownDelay(stepDownDelay);
|
|
m_agc.setGate(settings.m_outputSampleRate * 0.05);
|
|
|
|
m_bandpass.create(301, settings.m_outputSampleRate, 300.0, settings.m_rfBandwidth / 2.0f);
|
|
|
|
m_inMovingAverage.resize(settings.m_outputSampleRate * 0.01, 1e-10); // 10 ms
|
|
m_amMovingAverage.resize(settings.m_outputSampleRate * 0.005, 1e-10); // 5 ms
|
|
m_outMovingAverage.resize(settings.m_outputSampleRate * 0.01, 1e-10); // 10 ms
|
|
}
|
|
|
|
if ((settings.m_audioActive != m_settings.m_audioActive) || force)
|
|
{
|
|
if (settings.m_audioActive)
|
|
{
|
|
m_audioBufferFill = 0;
|
|
DSPEngine::instance()->addAudioSink(&m_audioFifo);
|
|
}
|
|
else
|
|
{
|
|
DSPEngine::instance()->removeAudioSink(&m_audioFifo);
|
|
}
|
|
}
|
|
|
|
if ((settings.m_squelchGate != m_settings.m_squelchGate) || force)
|
|
{
|
|
if ((settings.m_sampleFormat == UDPSrcSettings::FormatLSB) ||
|
|
(settings.m_sampleFormat == UDPSrcSettings::FormatLSBMono) ||
|
|
(settings.m_sampleFormat == UDPSrcSettings::FormatUSB) ||
|
|
(settings.m_sampleFormat == UDPSrcSettings::FormatUSBMono))
|
|
{
|
|
m_squelchGate = settings.m_outputSampleRate * 0.05;
|
|
}
|
|
else
|
|
{
|
|
m_squelchGate = (settings.m_outputSampleRate * settings.m_squelchGate)/100;
|
|
}
|
|
|
|
m_squelchRelease = (settings.m_outputSampleRate * settings.m_squelchGate)/100;
|
|
initSquelch(m_squelchOpen);
|
|
int stepDownDelay = (settings.m_outputSampleRate * (settings.m_squelchGate == 0 ? 1 : settings.m_squelchGate))/100;
|
|
m_agc.setStepDownDelay(stepDownDelay); // same delay for up and down
|
|
}
|
|
|
|
if ((settings.m_squelchdB != m_settings.m_squelchdB) || force)
|
|
{
|
|
m_squelch = CalcDb::powerFromdB(settings.m_squelchdB);
|
|
m_agc.setThreshold(m_squelch*(1<<23));
|
|
}
|
|
|
|
if ((settings.m_udpAddress != m_settings.m_udpAddress) || force)
|
|
{
|
|
m_udpBuffer->setAddress(const_cast<QString&>(settings.m_udpAddress));
|
|
m_udpBufferMono->setAddress(const_cast<QString&>(settings.m_udpAddress));
|
|
}
|
|
|
|
if ((settings.m_udpPort != m_settings.m_udpPort) || force)
|
|
{
|
|
m_udpBuffer->setPort(settings.m_udpPort);
|
|
m_udpBufferMono->setPort(settings.m_udpPort);
|
|
}
|
|
|
|
if ((settings.m_audioPort != m_settings.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, settings.m_audioPort))
|
|
{
|
|
connect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()), Qt::QueuedConnection);
|
|
qDebug("UDPSrc::handleMessage: audio socket bound to port %d", settings.m_audioPort);
|
|
}
|
|
else
|
|
{
|
|
qWarning("UDPSrc::handleMessage: cannot bind audio socket");
|
|
}
|
|
}
|
|
|
|
if ((settings.m_fmDeviation != m_settings.m_fmDeviation) || force)
|
|
{
|
|
m_phaseDiscri.setFMScaling((float) settings.m_outputSampleRate / (2.0f * settings.m_fmDeviation));
|
|
}
|
|
|
|
m_settingsMutex.unlock();
|
|
|
|
m_settings = settings;
|
|
}
|