mirror of
https://github.com/f4exb/sdrangel.git
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236 lines
7.2 KiB
C++
236 lines
7.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2017 Edouard Griffiths, F4EXB //
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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 <QDebug>
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#include "dsp/upchannelizer.h"
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#include "udpsink.h"
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MESSAGE_CLASS_DEFINITION(UDPSink::MsgUDPSinkConfigure, Message)
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MESSAGE_CLASS_DEFINITION(UDPSink::MsgUDPSinkSpectrum, Message)
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UDPSink::UDPSink(MessageQueue* uiMessageQueue, UDPSinkGUI* udpSinkGUI, BasebandSampleSink* spectrum) :
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m_uiMessageQueue(uiMessageQueue),
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m_udpSinkGUI(udpSinkGUI),
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m_spectrum(spectrum),
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m_magsq(1e-10),
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m_movingAverage(16, 0),
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m_settingsMutex(QMutex::Recursive)
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{
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setObjectName("UDPSink");
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apply(true);
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}
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UDPSink::~UDPSink()
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{
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}
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void UDPSink::start()
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{
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m_udpHandler.start();
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}
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void UDPSink::stop()
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{
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m_udpHandler.stop();
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}
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void UDPSink::pull(Sample& sample)
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{
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if (m_running.m_channelMute)
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{
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sample.m_real = 0.0f;
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sample.m_imag = 0.0f;
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return;
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}
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Complex ci;
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m_settingsMutex.lock();
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if (m_interpolatorDistance > 1.0f) // decimate
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{
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modulateSample();
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while (!m_interpolator.decimate(&m_interpolatorDistanceRemain, m_modSample, &ci))
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{
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modulateSample();
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}
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}
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else
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{
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if (m_interpolator.interpolate(&m_interpolatorDistanceRemain, m_modSample, &ci))
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{
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modulateSample();
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}
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}
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m_interpolatorDistanceRemain += m_interpolatorDistance;
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ci *= m_carrierNco.nextIQ(); // shift to carrier frequency
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m_settingsMutex.unlock();
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Real magsq = ci.real() * ci.real() + ci.imag() * ci.imag();
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magsq /= (1<<30);
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m_movingAverage.feed(magsq);
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m_magsq = m_movingAverage.average();
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sample.m_real = (FixReal) ci.real();
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sample.m_imag = (FixReal) ci.imag();
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}
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void UDPSink::modulateSample()
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{
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//Real t;
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Sample s;
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if (m_running.m_sampleFormat == FormatS16LE)
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{
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m_udpHandler.readSample(s);
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m_modSample.real(s.m_real);
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m_modSample.imag(s.m_imag);
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}
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else
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{
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m_modSample.real(0.0f);
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m_modSample.imag(0.0f);
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}
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}
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bool UDPSink::handleMessage(const Message& cmd)
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{
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qDebug() << "UDPSink::handleMessage";
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if (UpChannelizer::MsgChannelizerNotification::match(cmd))
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{
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UpChannelizer::MsgChannelizerNotification& notif = (UpChannelizer::MsgChannelizerNotification&) cmd;
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m_settingsMutex.lock();
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m_config.m_basebandSampleRate = notif.getBasebandSampleRate();
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m_config.m_outputSampleRate = notif.getSampleRate();
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m_config.m_inputFrequencyOffset = notif.getFrequencyOffset();
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m_settingsMutex.unlock();
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qDebug() << "UDPSink::handleMessage: MsgChannelizerNotification:"
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<< " m_basebandSampleRate: " << m_config.m_basebandSampleRate
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<< " m_outputSampleRate: " << m_config.m_outputSampleRate
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<< " m_inputFrequencyOffset: " << m_config.m_inputFrequencyOffset;
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return true;
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}
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else if (MsgUDPSinkConfigure::match(cmd))
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{
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MsgUDPSinkConfigure& cfg = (MsgUDPSinkConfigure&) cmd;
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m_settingsMutex.lock();
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m_config.m_sampleFormat = cfg.getSampleFormat();
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m_config.m_inputSampleRate = cfg.getInputSampleRate();
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m_config.m_rfBandwidth = cfg.getRFBandwidth();
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m_config.m_fmDeviation = cfg.getFMDeviation();
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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_channelMute = cfg.getChannelMute();
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apply(false);
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m_settingsMutex.unlock();
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qDebug() << "UDPSink::handleMessage: MsgUDPSinkConfigure:"
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<< " m_sampleFormat: " << m_config.m_sampleFormat
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<< " m_inputSampleRate: " << m_config.m_inputSampleRate
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<< " m_rfBandwidth: " << m_config.m_rfBandwidth
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<< " m_fmDeviation: " << m_config.m_fmDeviation
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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_channelMute: " << m_config.m_channelMute;
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return true;
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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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void UDPSink::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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QString& udpAddress,
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int udpPort,
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bool channelMute)
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{
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Message* cmd = MsgUDPSinkConfigure::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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channelMute);
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messageQueue->push(cmd);
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}
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void UDPSink::setSpectrum(MessageQueue* messageQueue, bool enabled)
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{
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Message* cmd = MsgUDPSinkSpectrum::create(enabled);
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messageQueue->push(cmd);
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}
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void UDPSink::apply(bool force)
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{
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if ((m_config.m_inputFrequencyOffset != m_running.m_inputFrequencyOffset) ||
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(m_config.m_outputSampleRate != m_running.m_outputSampleRate) || force)
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{
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m_settingsMutex.lock();
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m_carrierNco.setFreq(m_config.m_inputFrequencyOffset, m_config.m_outputSampleRate);
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m_settingsMutex.unlock();
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}
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if((m_config.m_outputSampleRate != m_running.m_outputSampleRate) ||
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(m_config.m_rfBandwidth != m_running.m_rfBandwidth) ||
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(m_config.m_inputSampleRate != m_running.m_inputSampleRate) || force)
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{
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m_settingsMutex.lock();
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m_interpolatorDistanceRemain = 0;
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m_interpolatorConsumed = false;
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m_interpolatorDistance = (Real) m_config.m_inputSampleRate / (Real) m_config.m_outputSampleRate;
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m_interpolator.create(48, m_config.m_inputSampleRate, m_config.m_rfBandwidth / 2.2, 3.0);
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m_settingsMutex.unlock();
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}
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if ((m_config.m_udpAddressStr != m_running.m_udpAddressStr) ||
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(m_config.m_udpPort != m_running.m_udpPort) || force)
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{
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m_udpHandler.configureUDPLink(m_config.m_udpAddressStr, m_config.m_udpPort);
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}
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if ((m_config.m_channelMute != m_running.m_channelMute) || force)
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{
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if (!m_config.m_channelMute) {
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m_udpHandler.resetReadIndex();
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}
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}
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m_running = m_config;
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}
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