kopia lustrzana https://github.com/f4exb/sdrangel
581 wiersze
20 KiB
C++
581 wiersze
20 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2016 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 <QTime>
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#include <QDebug>
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#include <QMutexLocker>
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#include "SWGChannelSettings.h"
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#include "SWGCWKeyerSettings.h"
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#include <stdio.h>
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#include <complex.h>
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#include <algorithm>
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#include <dsp/upchannelizer.h>
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#include "dsp/dspengine.h"
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#include "dsp/pidcontroller.h"
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#include "device/devicesinkapi.h"
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#include "dsp/threadedbasebandsamplesource.h"
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#include "nfmmod.h"
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgConfigureNFMMod, Message)
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgConfigureChannelizer, Message)
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgConfigureFileSourceName, Message)
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgConfigureFileSourceSeek, Message)
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgConfigureAFInput, Message)
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgConfigureFileSourceStreamTiming, Message)
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgReportFileSourceStreamData, Message)
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MESSAGE_CLASS_DEFINITION(NFMMod::MsgReportFileSourceStreamTiming, Message)
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const QString NFMMod::m_channelIdURI = "sdrangel.channeltx.modnfm";
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const QString NFMMod::m_channelId = "NFMMod";
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const int NFMMod::m_levelNbSamples = 480; // every 10ms
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NFMMod::NFMMod(DeviceSinkAPI *deviceAPI) :
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ChannelSourceAPI(m_channelIdURI),
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m_deviceAPI(deviceAPI),
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m_absoluteFrequencyOffset(0),
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m_modPhasor(0.0f),
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m_movingAverage(40, 0),
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m_volumeAGC(40, 0),
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m_audioFifo(4800),
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m_settingsMutex(QMutex::Recursive),
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m_fileSize(0),
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m_recordLength(0),
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m_sampleRate(48000),
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m_levelCalcCount(0),
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m_peakLevel(0.0f),
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m_levelSum(0.0f)
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{
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setObjectName(m_channelId);
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m_audioBuffer.resize(1<<14);
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m_audioBufferFill = 0;
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m_movingAverage.resize(16, 0);
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m_volumeAGC.resize(4096, 0.003, 0);
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m_magsq = 0.0;
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m_toneNco.setFreq(1000.0, m_settings.m_audioSampleRate);
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m_ctcssNco.setFreq(88.5, m_settings.m_audioSampleRate);
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DSPEngine::instance()->addAudioSource(&m_audioFifo);
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// CW keyer
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m_cwKeyer.setSampleRate(m_settings.m_audioSampleRate);
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m_cwKeyer.setWPM(13);
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m_cwKeyer.setMode(CWKeyerSettings::CWNone);
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m_channelizer = new UpChannelizer(this);
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m_threadedChannelizer = new ThreadedBasebandSampleSource(m_channelizer, this);
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m_deviceAPI->addThreadedSource(m_threadedChannelizer);
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m_deviceAPI->addChannelAPI(this);
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applySettings(m_settings, true);
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}
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NFMMod::~NFMMod()
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{
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DSPEngine::instance()->removeAudioSource(&m_audioFifo);
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m_deviceAPI->removeChannelAPI(this);
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m_deviceAPI->removeThreadedSource(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 NFMMod::pull(Sample& sample)
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{
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if (m_settings.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 NFMMod::pullAudio(int nbSamples)
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{
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unsigned int nbSamplesAudio = nbSamples * ((Real) m_settings.m_audioSampleRate / (Real) m_settings.m_basebandSampleRate);
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if (nbSamplesAudio > m_audioBuffer.size())
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{
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m_audioBuffer.resize(nbSamplesAudio);
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}
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m_audioFifo.read(reinterpret_cast<quint8*>(&m_audioBuffer[0]), nbSamplesAudio, 10);
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m_audioBufferFill = 0;
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}
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void NFMMod::modulateSample()
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{
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Real t;
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pullAF(t);
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calculateLevel(t);
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m_audioBufferFill++;
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if (m_settings.m_ctcssOn)
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{
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m_modPhasor += (m_settings.m_fmDeviation / (float) m_settings.m_audioSampleRate) * (0.85f * m_bandpass.filter(t) + 0.15f * 378.0f * m_ctcssNco.next()) * (M_PI / 378.0f);
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}
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else
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{
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// 378 = 302 * 1.25; 302 = number of filter taps (established experimentally)
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m_modPhasor += (m_settings.m_fmDeviation / (float) m_settings.m_audioSampleRate) * m_bandpass.filter(t) * (M_PI / 378.0f);
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}
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m_modSample.real(cos(m_modPhasor) * 29204.0f); // -1 dB
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m_modSample.imag(sin(m_modPhasor) * 29204.0f);
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}
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void NFMMod::pullAF(Real& sample)
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{
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switch (m_settings.m_modAFInput)
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{
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case NFMModInputTone:
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sample = m_toneNco.next();
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break;
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case NFMModInputFile:
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// sox f4exb_call.wav --encoding float --endian little f4exb_call.raw
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// ffplay -f f32le -ar 48k -ac 1 f4exb_call.raw
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if (m_ifstream.is_open())
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{
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if (m_ifstream.eof())
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{
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if (m_settings.m_playLoop)
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{
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m_ifstream.clear();
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m_ifstream.seekg(0, std::ios::beg);
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}
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}
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if (m_ifstream.eof())
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{
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sample = 0.0f;
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}
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else
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{
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m_ifstream.read(reinterpret_cast<char*>(&sample), sizeof(Real));
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sample *= m_settings.m_volumeFactor;
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}
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}
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else
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{
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sample = 0.0f;
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}
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break;
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case NFMModInputAudio:
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sample = ((m_audioBuffer[m_audioBufferFill].l + m_audioBuffer[m_audioBufferFill].r) / 65536.0f) * m_settings.m_volumeFactor;
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break;
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case NFMModInputCWTone:
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Real fadeFactor;
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if (m_cwKeyer.getSample())
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{
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m_cwKeyer.getCWSmoother().getFadeSample(true, fadeFactor);
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sample = m_toneNco.next() * fadeFactor;
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}
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else
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{
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if (m_cwKeyer.getCWSmoother().getFadeSample(false, fadeFactor))
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{
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sample = m_toneNco.next() * fadeFactor;
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}
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else
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{
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sample = 0.0f;
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m_toneNco.setPhase(0);
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}
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}
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break;
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case NFMModInputNone:
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default:
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sample = 0.0f;
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break;
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}
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}
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void NFMMod::calculateLevel(Real& sample)
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{
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if (m_levelCalcCount < m_levelNbSamples)
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{
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m_peakLevel = std::max(std::fabs(m_peakLevel), sample);
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m_levelSum += sample * sample;
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m_levelCalcCount++;
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}
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else
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{
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qreal rmsLevel = sqrt(m_levelSum / m_levelNbSamples);
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//qDebug("NFMMod::calculateLevel: %f %f", rmsLevel, m_peakLevel);
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emit levelChanged(rmsLevel, m_peakLevel, m_levelNbSamples);
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m_peakLevel = 0.0f;
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m_levelSum = 0.0f;
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m_levelCalcCount = 0;
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}
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}
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void NFMMod::start()
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{
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qDebug() << "NFMMod::start: m_outputSampleRate: " << m_settings.m_outputSampleRate
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<< " m_inputFrequencyOffset: " << m_settings.m_inputFrequencyOffset;
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m_audioFifo.clear();
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}
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void NFMMod::stop()
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{
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}
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bool NFMMod::handleMessage(const Message& cmd)
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{
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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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NFMModSettings settings = m_settings;
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settings.m_basebandSampleRate = notif.getBasebandSampleRate();
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settings.m_outputSampleRate = notif.getSampleRate();
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settings.m_inputFrequencyOffset = notif.getFrequencyOffset();
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applySettings(settings);
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qDebug() << "NFMMod::handleMessage: UpChannelizer::MsgChannelizerNotification:"
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<< " m_basebandSampleRate: " << settings.m_basebandSampleRate
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<< " m_outputSampleRate: " << settings.m_outputSampleRate
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<< " m_inputFrequencyOffset: " << settings.m_inputFrequencyOffset;
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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() << "NFMMod::handleMessage: MsgConfigureChannelizer:"
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<< " getSampleRate: " << cfg.getSampleRate()
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<< " getCenterFrequency: " << cfg.getCenterFrequency();
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return true;
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}
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else if (MsgConfigureNFMMod::match(cmd))
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{
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MsgConfigureNFMMod& cfg = (MsgConfigureNFMMod&) cmd;
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NFMModSettings settings = cfg.getSettings();
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m_absoluteFrequencyOffset = settings.m_inputFrequencyOffset;
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settings.m_outputSampleRate = m_settings.m_outputSampleRate;
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settings.m_inputFrequencyOffset = m_settings.m_inputFrequencyOffset;
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qDebug() << "NFMMod::handleMessage: MsgConfigureNFMMod:"
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<< " m_rfBandwidth: " << settings.m_rfBandwidth
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<< " m_afBandwidth: " << settings.m_afBandwidth
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<< " m_fmDeviation: " << settings.m_fmDeviation
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<< " m_volumeFactor: " << settings.m_volumeFactor
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<< " m_toneFrequency: " << settings.m_toneFrequency
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<< " m_ctcssIndex: " << settings.m_ctcssIndex
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<< " m_ctcssOn: " << settings.m_ctcssOn
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<< " m_channelMute: " << settings.m_channelMute
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<< " m_playLoop: " << settings.m_playLoop
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<< " m_modAFInout " << settings.m_modAFInput
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<< " force: " << cfg.getForce();
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applySettings(settings, cfg.getForce());
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return true;
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}
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else if (MsgConfigureFileSourceName::match(cmd))
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{
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MsgConfigureFileSourceName& conf = (MsgConfigureFileSourceName&) cmd;
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m_fileName = conf.getFileName();
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openFileStream();
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qDebug() << "NFMMod::handleMessage: MsgConfigureFileSourceName:"
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<< " m_fileName: " << m_fileName;
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return true;
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}
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else if (MsgConfigureFileSourceSeek::match(cmd))
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{
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MsgConfigureFileSourceSeek& conf = (MsgConfigureFileSourceSeek&) cmd;
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int seekPercentage = conf.getPercentage();
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seekFileStream(seekPercentage);
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qDebug() << "NFMMod::handleMessage: MsgConfigureFileSourceSeek:"
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<< " seekPercentage: " << seekPercentage;
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return true;
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}
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else if (MsgConfigureAFInput::match(cmd))
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{
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MsgConfigureAFInput& conf = (MsgConfigureAFInput&) cmd;
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m_afInput = conf.getAFInput();
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qDebug() << "NFMMod::handleMessage: MsgConfigureAFInput:"
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<< " m_afInput: " << m_afInput;
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return true;
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}
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else if (MsgConfigureFileSourceStreamTiming::match(cmd))
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{
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std::size_t samplesCount;
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if (m_ifstream.eof()) {
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samplesCount = m_fileSize / sizeof(Real);
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} else {
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samplesCount = m_ifstream.tellg() / sizeof(Real);
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}
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MsgReportFileSourceStreamTiming *report;
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report = MsgReportFileSourceStreamTiming::create(samplesCount);
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getMessageQueueToGUI()->push(report);
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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 NFMMod::openFileStream()
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{
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if (m_ifstream.is_open()) {
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m_ifstream.close();
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}
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m_ifstream.open(m_fileName.toStdString().c_str(), std::ios::binary | std::ios::ate);
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m_fileSize = m_ifstream.tellg();
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m_ifstream.seekg(0,std::ios_base::beg);
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m_sampleRate = 48000; // fixed rate
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m_recordLength = m_fileSize / (sizeof(Real) * m_sampleRate);
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qDebug() << "NFMMod::openFileStream: " << m_fileName.toStdString().c_str()
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<< " fileSize: " << m_fileSize << "bytes"
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<< " length: " << m_recordLength << " seconds";
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MsgReportFileSourceStreamData *report;
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report = MsgReportFileSourceStreamData::create(m_sampleRate, m_recordLength);
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getMessageQueueToGUI()->push(report);
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}
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void NFMMod::seekFileStream(int seekPercentage)
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{
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QMutexLocker mutexLocker(&m_settingsMutex);
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if (m_ifstream.is_open())
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{
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int seekPoint = ((m_recordLength * seekPercentage) / 100) * m_sampleRate;
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seekPoint *= sizeof(Real);
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m_ifstream.clear();
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m_ifstream.seekg(seekPoint, std::ios::beg);
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}
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}
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void NFMMod::applySettings(const NFMModSettings& settings, bool force)
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{
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if ((settings.m_inputFrequencyOffset != m_settings.m_inputFrequencyOffset) ||
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(settings.m_outputSampleRate != m_settings.m_outputSampleRate) || force)
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{
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m_settingsMutex.lock();
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m_carrierNco.setFreq(settings.m_inputFrequencyOffset, settings.m_outputSampleRate);
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m_settingsMutex.unlock();
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}
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if((settings.m_outputSampleRate != m_settings.m_outputSampleRate) ||
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(settings.m_rfBandwidth != m_settings.m_rfBandwidth) ||
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(settings.m_audioSampleRate != m_settings.m_audioSampleRate) || 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) settings.m_audioSampleRate / (Real) settings.m_outputSampleRate;
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m_interpolator.create(48, settings.m_audioSampleRate, settings.m_rfBandwidth / 2.2, 3.0);
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m_settingsMutex.unlock();
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}
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if ((settings.m_afBandwidth != m_settings.m_afBandwidth) ||
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(settings.m_audioSampleRate != m_settings.m_audioSampleRate) || force)
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{
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m_settingsMutex.lock();
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m_lowpass.create(301, settings.m_audioSampleRate, 250.0);
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m_bandpass.create(301, settings.m_audioSampleRate, 300.0, settings.m_afBandwidth);
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m_settingsMutex.unlock();
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}
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if ((settings.m_toneFrequency != m_settings.m_toneFrequency) ||
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(settings.m_audioSampleRate != m_settings.m_audioSampleRate) || force)
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{
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m_settingsMutex.lock();
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m_toneNco.setFreq(settings.m_toneFrequency, settings.m_audioSampleRate);
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m_settingsMutex.unlock();
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}
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if ((settings.m_audioSampleRate != m_settings.m_audioSampleRate) || force)
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{
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m_cwKeyer.setSampleRate(settings.m_audioSampleRate);
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}
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if ((settings.m_ctcssIndex != m_settings.m_ctcssIndex) ||
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(settings.m_audioSampleRate != m_settings.m_audioSampleRate) || force)
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{
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m_settingsMutex.lock();
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m_ctcssNco.setFreq(NFMModSettings::getCTCSSFreq(settings.m_ctcssIndex), settings.m_audioSampleRate);
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m_settingsMutex.unlock();
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}
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m_settings = settings;
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}
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QByteArray NFMMod::serialize() const
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{
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return m_settings.serialize();
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}
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bool NFMMod::deserialize(const QByteArray& data)
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{
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if (m_settings.deserialize(data))
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{
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MsgConfigureNFMMod *msg = MsgConfigureNFMMod::create(m_settings, true);
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m_inputMessageQueue.push(msg);
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return true;
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}
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else
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{
|
|
m_settings.resetToDefaults();
|
|
MsgConfigureNFMMod *msg = MsgConfigureNFMMod::create(m_settings, true);
|
|
m_inputMessageQueue.push(msg);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
int NFMMod::webapiSettingsGet(
|
|
SWGSDRangel::SWGChannelSettings& response,
|
|
QString& errorMessage __attribute__((unused)))
|
|
{
|
|
response.setNfmModSettings(new SWGSDRangel::SWGNFMModSettings());
|
|
response.getNfmModSettings()->setAfBandwidth(m_settings.m_afBandwidth);
|
|
response.getNfmModSettings()->setAudioSampleRate(m_settings.m_audioSampleRate);
|
|
response.getNfmModSettings()->setBasebandSampleRate(m_settings.m_basebandSampleRate);
|
|
response.getNfmModSettings()->setChannelMute(m_settings.m_channelMute ? 1 : 0);
|
|
response.getNfmModSettings()->setCtcssIndex(m_settings.m_ctcssIndex);
|
|
response.getNfmModSettings()->setCtcssOn(m_settings.m_ctcssOn ? 1 : 0);
|
|
response.getNfmModSettings()->setFmDeviation(m_settings.m_fmDeviation);
|
|
response.getNfmModSettings()->setInputFrequencyOffset(m_settings.m_inputFrequencyOffset);
|
|
response.getNfmModSettings()->setModAfInput((int) m_settings.m_modAFInput);
|
|
response.getNfmModSettings()->setOutputSampleRate(m_settings.m_outputSampleRate);
|
|
response.getNfmModSettings()->setPlayLoop(m_settings.m_playLoop ? 1 : 0);
|
|
response.getNfmModSettings()->setRfBandwidth(m_settings.m_rfBandwidth);
|
|
response.getNfmModSettings()->setRgbColor(m_settings.m_rgbColor);
|
|
*response.getNfmModSettings()->getTitle() = m_settings.m_title;
|
|
response.getNfmModSettings()->setToneFrequency(m_settings.m_toneFrequency);
|
|
response.getNfmModSettings()->setVolumeFactor(m_settings.m_volumeFactor);
|
|
SWGSDRangel::SWGCWKeyerSettings *apiCwKeyerSettings = response.getNfmModSettings()->getCwKeyer();
|
|
const CWKeyerSettings& cwKeyerSettings = m_cwKeyer.getSettings();
|
|
apiCwKeyerSettings->setLoop(cwKeyerSettings.m_loop ? 1 : 0);
|
|
apiCwKeyerSettings->setMode((int) cwKeyerSettings.m_mode);
|
|
apiCwKeyerSettings->setSampleRate(cwKeyerSettings.m_sampleRate);
|
|
apiCwKeyerSettings->setText(new QString(cwKeyerSettings.m_text));
|
|
apiCwKeyerSettings->setWpm(cwKeyerSettings.m_wpm);
|
|
return 200;
|
|
}
|
|
|
|
int NFMMod::webapiSettingsPutPatch(
|
|
bool force,
|
|
SWGSDRangel::SWGChannelSettings& response,
|
|
QString& errorMessage __attribute__((unused)))
|
|
{
|
|
NFMModSettings settings;
|
|
settings.m_afBandwidth = response.getNfmModSettings()->getAfBandwidth();
|
|
settings.m_audioSampleRate = response.getNfmModSettings()->getAudioSampleRate();
|
|
settings.m_basebandSampleRate = response.getNfmModSettings()->getBasebandSampleRate();
|
|
settings.m_channelMute = response.getNfmModSettings()->getChannelMute() != 0;
|
|
settings.m_ctcssIndex = response.getNfmModSettings()->getCtcssIndex();
|
|
settings.m_ctcssOn = response.getNfmModSettings()->getCtcssOn() != 0;
|
|
settings.m_fmDeviation = response.getNfmModSettings()->getFmDeviation();
|
|
settings.m_inputFrequencyOffset = response.getNfmModSettings()->getInputFrequencyOffset();
|
|
settings.m_modAFInput = (NFMModSettings::NFMModInputAF) response.getNfmModSettings()->getModAfInput();
|
|
settings.m_outputSampleRate = response.getNfmModSettings()->getOutputSampleRate();
|
|
settings.m_playLoop = response.getNfmModSettings()->getPlayLoop() != 0;
|
|
settings.m_rfBandwidth = response.getNfmModSettings()->getRfBandwidth();
|
|
settings.m_rgbColor = response.getNfmModSettings()->getRgbColor();
|
|
settings.m_title = *response.getNfmModSettings()->getTitle();
|
|
settings.m_toneFrequency = response.getNfmModSettings()->getToneFrequency();
|
|
settings.m_volumeFactor = response.getNfmModSettings()->getVolumeFactor();
|
|
SWGSDRangel::SWGCWKeyerSettings *apiCwKeyerSettings = response.getNfmModSettings()->getCwKeyer();
|
|
CWKeyerSettings cwKeyerSettings;
|
|
cwKeyerSettings.m_loop = apiCwKeyerSettings->getLoop() != 0;
|
|
cwKeyerSettings.m_mode = (CWKeyerSettings::CWMode) apiCwKeyerSettings->getMode();
|
|
cwKeyerSettings.m_sampleRate = apiCwKeyerSettings->getSampleRate();
|
|
cwKeyerSettings.m_text = *apiCwKeyerSettings->getText();
|
|
cwKeyerSettings.m_wpm = apiCwKeyerSettings->getWpm();
|
|
m_cwKeyer.setLoop(cwKeyerSettings.m_loop);
|
|
m_cwKeyer.setMode(cwKeyerSettings.m_mode);
|
|
m_cwKeyer.setSampleRate(cwKeyerSettings.m_sampleRate);
|
|
m_cwKeyer.setText(cwKeyerSettings.m_text);
|
|
m_cwKeyer.setWPM(cwKeyerSettings.m_wpm);
|
|
|
|
MsgConfigureNFMMod *msg = MsgConfigureNFMMod::create(settings, force);
|
|
m_inputMessageQueue.push(msg);
|
|
|
|
if (m_guiMessageQueue) // forward to GUI if any
|
|
{
|
|
CWKeyer::MsgConfigureCWKeyer *msgCwKeyer = CWKeyer::MsgConfigureCWKeyer::create(cwKeyerSettings, force);
|
|
m_guiMessageQueue->push(msgCwKeyer);
|
|
MsgConfigureNFMMod *msgToGUI = MsgConfigureNFMMod::create(settings, force);
|
|
m_guiMessageQueue->push(msgToGUI);
|
|
}
|
|
|
|
return 200;
|
|
}
|