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587 lines
19 KiB
C++
587 lines
19 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 "util/db.h"
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#include "udpsinkmsg.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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MESSAGE_CLASS_DEFINITION(UDPSink::MsgResetReadIndex, 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_spectrumEnabled(false),
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m_spectrumChunkSize(2160),
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m_spectrumChunkCounter(0),
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m_magsq(1e-10),
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m_movingAverage(16, 1e-10),
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m_inMovingAverage(480, 1e-10),
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m_sampleRateSum(0),
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m_sampleRateAvgCounter(0),
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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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m_levelNbSamples(480),
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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_squelchThreshold(4800),
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m_modPhasor(0.0f),
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m_SSBFilterBufferIndex(0),
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m_settingsMutex(QMutex::Recursive)
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{
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setObjectName("UDPSink");
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m_udpHandler.setFeedbackMessageQueue(&m_inputMessageQueue);
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m_SSBFilter = new fftfilt(m_config.m_lowCutoff / m_config.m_inputSampleRate, m_config.m_rfBandwidth / m_config.m_inputSampleRate, m_ssbFftLen);
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m_SSBFilterBuffer = new Complex[m_ssbFftLen>>1]; // filter returns data exactly half of its size
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apply(true);
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}
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UDPSink::~UDPSink()
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{
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delete[] m_SSBFilterBuffer;
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delete m_SSBFilter;
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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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initSquelch(false);
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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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double 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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if (m_running.m_sampleFormat == FormatS16LE) // Linear I/Q transponding
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{
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Sample s;
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m_udpHandler.readSample(s);
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uint64_t magsq = s.m_real * s.m_real + s.m_imag * s.m_imag;
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m_inMovingAverage.feed(magsq/1073741824.0);
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m_inMagsq = m_inMovingAverage.average();
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calculateSquelch(m_inMagsq);
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if (m_squelchOpen)
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{
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m_modSample.real(s.m_real * m_running.m_gain);
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m_modSample.imag(s.m_imag * m_running.m_gain);
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calculateLevel(m_modSample);
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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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else if ((m_running.m_sampleFormat == FormatNFMMono) || (m_running.m_sampleFormat == FormatNFM))
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{
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FixReal t;
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Sample s;
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if (m_running.m_sampleFormat == FormatNFMMono)
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{
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m_udpHandler.readSample(t);
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}
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else
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{
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m_udpHandler.readSample(s);
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t = (s.m_real + s.m_imag) / 2;
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}
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m_inMovingAverage.feed((t*t)/1073741824.0);
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m_inMagsq = m_inMovingAverage.average();
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calculateSquelch(m_inMagsq);
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if (m_squelchOpen)
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{
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m_modPhasor += (m_running.m_fmDeviation / m_running.m_inputSampleRate) * (t / 32768.0f) * M_PI * 2.0f;
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m_modSample.real(cos(m_modPhasor) * 10362.2f * m_running.m_gain);
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m_modSample.imag(sin(m_modPhasor) * 10362.2f * m_running.m_gain);
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calculateLevel(m_modSample);
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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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else if (m_running.m_sampleFormat == FormatAMMono)
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{
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FixReal t;
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m_udpHandler.readSample(t);
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m_inMovingAverage.feed((t*t)/1073741824.0);
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m_inMagsq = m_inMovingAverage.average();
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calculateSquelch(m_inMagsq);
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if (m_squelchOpen)
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{
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m_modSample.real(((t / 32768.0f)*m_running.m_amModFactor*m_running.m_gain + 1.0f) * 16384.0f); // modulate and scale zero frequency carrier
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m_modSample.imag(0.0f);
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calculateLevel(m_modSample);
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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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else if ((m_running.m_sampleFormat == FormatLSBMono) || (m_running.m_sampleFormat == FormatUSBMono))
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{
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FixReal t;
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Complex c, ci;
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fftfilt::cmplx *filtered;
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int n_out = 0;
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m_udpHandler.readSample(t);
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m_inMovingAverage.feed((t*t)/1073741824.0);
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m_inMagsq = m_inMovingAverage.average();
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calculateSquelch(m_inMagsq);
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if (m_squelchOpen)
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{
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ci.real((t / 32768.0f) * m_running.m_gain);
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ci.imag(0.0f);
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n_out = m_SSBFilter->runSSB(ci, &filtered, (m_running.m_sampleFormat == FormatUSBMono));
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if (n_out > 0)
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{
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memcpy((void *) m_SSBFilterBuffer, (const void *) filtered, n_out*sizeof(Complex));
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m_SSBFilterBufferIndex = 0;
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}
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c = m_SSBFilterBuffer[m_SSBFilterBufferIndex];
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m_modSample.real(m_SSBFilterBuffer[m_SSBFilterBufferIndex].real() * 32768.0f);
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m_modSample.imag(m_SSBFilterBuffer[m_SSBFilterBufferIndex].imag() * 32768.0f);
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m_SSBFilterBufferIndex++;
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calculateLevel(m_modSample);
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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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else if ((m_running.m_sampleFormat == FormatLSB) || (m_running.m_sampleFormat == FormatUSB))
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{
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Sample s;
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Complex c, ci;
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fftfilt::cmplx *filtered;
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int n_out = 0;
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m_udpHandler.readSample(s);
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uint64_t magsq = s.m_real * s.m_real + s.m_imag * s.m_imag;
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m_inMovingAverage.feed(magsq/1073741824.0);
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m_inMagsq = m_inMovingAverage.average();
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calculateSquelch(m_inMagsq);
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if (m_squelchOpen)
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{
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ci.real((s.m_real / 32768.0f) * m_running.m_gain);
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ci.imag((s.m_imag / 32768.0f) * m_running.m_gain);
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n_out = m_SSBFilter->runSSB(ci, &filtered, (m_running.m_sampleFormat == FormatUSB));
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if (n_out > 0)
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{
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memcpy((void *) m_SSBFilterBuffer, (const void *) filtered, n_out*sizeof(Complex));
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m_SSBFilterBufferIndex = 0;
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}
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c = m_SSBFilterBuffer[m_SSBFilterBufferIndex];
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m_modSample.real(m_SSBFilterBuffer[m_SSBFilterBufferIndex].real() * 32768.0f);
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m_modSample.imag(m_SSBFilterBuffer[m_SSBFilterBufferIndex].imag() * 32768.0f);
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m_SSBFilterBufferIndex++;
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calculateLevel(m_modSample);
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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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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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initSquelch(false);
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}
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if (m_spectrum && m_spectrumEnabled && (m_spectrumChunkCounter < m_spectrumChunkSize - 1))
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{
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Sample s;
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s.m_real = (FixReal) m_modSample.real();
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s.m_imag = (FixReal) m_modSample.imag();
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m_sampleBuffer.push_back(s);
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m_spectrumChunkCounter++;
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}
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else
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{
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m_spectrum->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), false);
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m_sampleBuffer.clear();
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m_spectrumChunkCounter = 0;
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}
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}
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void UDPSink::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 = m_levelSum > 0.0 ? sqrt(m_levelSum / m_levelNbSamples) : 0.0;
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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 UDPSink::calculateLevel(Complex sample)
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{
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Real t = std::abs(sample);
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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), t);
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m_levelSum += (t * t);
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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 = m_levelSum > 0.0 ? sqrt((m_levelSum/(1<<30)) / m_levelNbSamples) : 0.0;
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emit levelChanged(rmsLevel, m_peakLevel / 32768.0, 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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bool UDPSink::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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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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apply(false);
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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_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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m_config.m_gain = cfg.getGain();
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m_config.m_squelch = CalcDb::powerFromdB(cfg.getSquelchDB());
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m_config.m_squelchGate = cfg.getSquelchGate();
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m_config.m_squelchEnabled = cfg.getSquelchEnabled();
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m_config.m_autoRWBalance = cfg.getAutoRWBalance();
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apply(cfg.getForce());
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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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<< " m_gain: " << m_config.m_gain
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<< " squelchDB: " << cfg.getSquelchDB()
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<< " m_squelchGate: " << m_config.m_squelchGate
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<< " m_squelch: " << m_config.m_squelch
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<< " m_squelchEnabled: " << m_config.m_squelchEnabled
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<< " m_autoRWBalance: " << m_config.m_autoRWBalance;
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return true;
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}
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else if (UDPSinkMessages::MsgSampleRateCorrection::match(cmd))
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{
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UDPSinkMessages::MsgSampleRateCorrection& cfg = (UDPSinkMessages::MsgSampleRateCorrection&) cmd;
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Real newSampleRate = m_actualInputSampleRate + cfg.getCorrectionFactor() * m_actualInputSampleRate;
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// exclude values too way out nominal sample rate (20%)
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if ((newSampleRate < m_running.m_inputSampleRate * 1.2) && (newSampleRate > m_running.m_inputSampleRate * 0.8))
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{
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m_actualInputSampleRate = newSampleRate;
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if ((cfg.getRawDeltaRatio() > -0.05) || (cfg.getRawDeltaRatio() < 0.05))
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{
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if (m_sampleRateAvgCounter < m_sampleRateAverageItems)
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{
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m_sampleRateSum += m_actualInputSampleRate;
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m_sampleRateAvgCounter++;
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}
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}
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else
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{
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m_sampleRateSum = 0.0;
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m_sampleRateAvgCounter = 0;
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}
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if (m_sampleRateAvgCounter == m_sampleRateAverageItems)
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{
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float avgRate = m_sampleRateSum / m_sampleRateAverageItems;
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qDebug("UDPSink::handleMessage: MsgSampleRateCorrection: corr: %+.6f new rate: %.0f: avg rate: %.0f",
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cfg.getCorrectionFactor(),
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m_actualInputSampleRate,
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avgRate);
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m_actualInputSampleRate = avgRate;
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m_sampleRateSum = 0.0;
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m_sampleRateAvgCounter = 0;
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}
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// else
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// {
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// qDebug("UDPSink::handleMessage: MsgSampleRateCorrection: corr: %+.6f new rate: %.0f",
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// cfg.getCorrectionFactor(),
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// m_actualInputSampleRate);
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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_actualInputSampleRate / (Real) m_config.m_outputSampleRate;
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//m_interpolator.create(48, m_actualInputSampleRate, m_config.m_rfBandwidth / 2.2, 3.0); // causes clicking: leaving at standard frequency
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m_settingsMutex.unlock();
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}
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return true;
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}
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else if (MsgUDPSinkSpectrum::match(cmd))
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{
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MsgUDPSinkSpectrum& spc = (MsgUDPSinkSpectrum&) cmd;
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m_spectrumEnabled = spc.getEnabled();
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qDebug() << "UDPSink::handleMessage: MsgUDPSinkSpectrum: m_spectrumEnabled: " << m_spectrumEnabled;
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return true;
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}
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else if (MsgResetReadIndex::match(cmd))
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{
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m_settingsMutex.lock();
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m_udpHandler.resetReadIndex();
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m_settingsMutex.unlock();
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qDebug() << "UDPSink::handleMessage: MsgResetReadIndex";
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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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|
}
|
|
|
|
void UDPSink::configure(MessageQueue* messageQueue,
|
|
SampleFormat sampleFormat,
|
|
Real outputSampleRate,
|
|
Real rfBandwidth,
|
|
int fmDeviation,
|
|
Real amModFactor,
|
|
QString& udpAddress,
|
|
int udpPort,
|
|
bool channelMute,
|
|
Real gain,
|
|
Real squelchDB,
|
|
Real squelchGate,
|
|
bool squelchEnabled,
|
|
bool autoRWBalance,
|
|
bool force)
|
|
{
|
|
Message* cmd = MsgUDPSinkConfigure::create(sampleFormat,
|
|
outputSampleRate,
|
|
rfBandwidth,
|
|
fmDeviation,
|
|
amModFactor,
|
|
udpAddress,
|
|
udpPort,
|
|
channelMute,
|
|
gain,
|
|
squelchDB,
|
|
squelchGate,
|
|
squelchEnabled,
|
|
autoRWBalance,
|
|
force);
|
|
messageQueue->push(cmd);
|
|
}
|
|
|
|
void UDPSink::setSpectrum(MessageQueue* messageQueue, bool enabled)
|
|
{
|
|
Message* cmd = MsgUDPSinkSpectrum::create(enabled);
|
|
messageQueue->push(cmd);
|
|
}
|
|
|
|
void UDPSink::resetReadIndex(MessageQueue* messageQueue)
|
|
{
|
|
Message* cmd = MsgResetReadIndex::create();
|
|
messageQueue->push(cmd);
|
|
}
|
|
|
|
|
|
void UDPSink::apply(bool force)
|
|
{
|
|
if ((m_config.m_inputFrequencyOffset != m_running.m_inputFrequencyOffset) ||
|
|
(m_config.m_outputSampleRate != m_running.m_outputSampleRate) || force)
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_carrierNco.setFreq(m_config.m_inputFrequencyOffset, m_config.m_outputSampleRate);
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if((m_config.m_outputSampleRate != m_running.m_outputSampleRate) ||
|
|
(m_config.m_rfBandwidth != m_running.m_rfBandwidth) ||
|
|
(m_config.m_inputSampleRate != m_running.m_inputSampleRate) || force)
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_interpolatorDistanceRemain = 0;
|
|
m_interpolatorConsumed = false;
|
|
m_interpolatorDistance = (Real) m_config.m_inputSampleRate / (Real) m_config.m_outputSampleRate;
|
|
m_interpolator.create(48, m_config.m_inputSampleRate, m_config.m_rfBandwidth / 2.2, 3.0);
|
|
m_actualInputSampleRate = m_config.m_inputSampleRate;
|
|
m_udpHandler.resetReadIndex();
|
|
m_sampleRateSum = 0.0;
|
|
m_sampleRateAvgCounter = 0;
|
|
m_spectrumChunkSize = m_config.m_inputSampleRate * 0.05; // 50 ms chunk
|
|
m_spectrumChunkCounter = 0;
|
|
m_levelNbSamples = m_config.m_inputSampleRate * 0.01; // every 10 ms
|
|
m_levelCalcCount = 0;
|
|
m_peakLevel = 0.0f;
|
|
m_levelSum = 0.0f;
|
|
m_udpHandler.resizeBuffer(m_config.m_inputSampleRate);
|
|
m_inMovingAverage.resize(m_config.m_inputSampleRate * 0.01, 1e-10); // 10 ms
|
|
m_squelchThreshold = m_config.m_inputSampleRate * m_config.m_squelchGate;
|
|
initSquelch(m_squelchOpen);
|
|
m_SSBFilter->create_filter(m_config.m_lowCutoff / m_config.m_inputSampleRate, m_config.m_rfBandwidth / m_config.m_inputSampleRate);
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if ((m_config.m_squelchGate != m_running.m_squelchGate) || force)
|
|
{
|
|
m_squelchThreshold = m_config.m_outputSampleRate * m_config.m_squelchGate;
|
|
initSquelch(m_squelchOpen);
|
|
}
|
|
|
|
if ((m_config.m_udpAddressStr != m_running.m_udpAddressStr) ||
|
|
(m_config.m_udpPort != m_running.m_udpPort) || force)
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_udpHandler.configureUDPLink(m_config.m_udpAddressStr, m_config.m_udpPort);
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if ((m_config.m_channelMute != m_running.m_channelMute) || force)
|
|
{
|
|
if (!m_config.m_channelMute) {
|
|
m_udpHandler.resetReadIndex();
|
|
}
|
|
}
|
|
|
|
m_running = m_config;
|
|
}
|