mirror of
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498 lines
18 KiB
C++
498 lines
18 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019-2020, 2023 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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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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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QUdpSocket>
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#include <QHostAddress>
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#include <QNetworkAccessManager>
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#include <QNetworkReply>
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#include <QBuffer>
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#include "dsp/basebandsamplesink.h"
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#include "util/db.h"
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#include "udpsinksink.h"
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const Real UDPSinkSink::m_agcTarget = 16384.0f;
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UDPSinkSink::UDPSinkSink() :
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m_channelSampleRate(48000),
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m_channelFrequencyOffset(0),
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m_outMovingAverage(480, 1e-10),
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m_inMovingAverage(480, 1e-10),
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m_amMovingAverage(1200, 1e-10),
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m_audioFifo(24000),
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m_spectrum(nullptr),
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m_spectrumEnabled(false),
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m_spectrumPositiveOnly(false),
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m_squelch(1e-6),
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m_squelchOpen(false),
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m_squelchOpenCount(0),
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m_squelchCloseCount(0),
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m_squelchGate(4800),
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m_squelchRelease(4800),
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m_agc(9600, m_agcTarget, 1e-6)
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{
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m_udpBuffer16 = new UDPSinkUtil<Sample16>(this, udpBlockSize, m_settings.m_udpPort);
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m_udpBufferMono16 = new UDPSinkUtil<int16_t>(this, udpBlockSize, m_settings.m_udpPort);
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m_udpBuffer24 = new UDPSinkUtil<Sample24>(this, udpBlockSize, m_settings.m_udpPort);
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m_audioSocket = new QUdpSocket(this);
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m_udpAudioBuf = new char[m_udpAudioPayloadSize];
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m_audioBuffer.resize(1<<9);
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m_audioBufferFill = 0;
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m_nco.setFreq(0, m_channelSampleRate);
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m_interpolator.create(16, m_channelSampleRate, m_settings.m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_channelSampleRate / m_settings.m_outputSampleRate;
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m_spectrumEnabled = false;
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m_nextSSBId = 0;
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m_nextS16leId = 0;
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m_last = 0;
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m_this = 0;
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m_scale = 0;
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m_magsq = 0;
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m_inMagsq = 0;
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UDPFilter = new fftfilt(0.0, (m_settings.m_rfBandwidth / 2.0) / m_settings.m_outputSampleRate, udpBlockSize);
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m_phaseDiscri.setFMScaling((float) m_settings. m_outputSampleRate / (2.0f * m_settings.m_fmDeviation));
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if (m_audioSocket->bind(QHostAddress::LocalHost, m_settings.m_audioPort))
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{
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qDebug("UDPSinkSink::UDPSinkSink: bind audio socket to port %d", m_settings.m_audioPort);
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connect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()), Qt::QueuedConnection);
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}
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else
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{
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qWarning("UDPSinkSink::UDPSinkSink: cannot bind audio port");
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}
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//DSPEngine::instance()->addAudioSink(&m_audioFifo);
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applyChannelSettings(m_channelSampleRate, m_channelFrequencyOffset, true);
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applySettings(m_settings, true);
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}
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UDPSinkSink::~UDPSinkSink()
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{
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delete m_audioSocket;
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delete m_udpBuffer24;
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delete m_udpBuffer16;
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delete m_udpBufferMono16;
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delete[] m_udpAudioBuf;
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delete UDPFilter;
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}
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void UDPSinkSink::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end)
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{
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Complex ci;
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fftfilt::cmplx* sideband;
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double l, r;
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m_sampleBuffer.clear();
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for(SampleVector::const_iterator it = begin; it < end; ++it)
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{
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Complex c(it->real(), it->imag());
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c *= m_nco.nextIQ();
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if(m_interpolator.decimate(&m_sampleDistanceRemain, c, &ci))
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{
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double inMagSq;
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double agcFactor = 1.0;
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if ((m_settings.m_agc) &&
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(m_settings.m_sampleFormat != UDPSinkSettings::FormatNFM) &&
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(m_settings.m_sampleFormat != UDPSinkSettings::FormatNFMMono) &&
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(m_settings.m_sampleFormat != UDPSinkSettings::FormatIQ16) &&
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(m_settings.m_sampleFormat != UDPSinkSettings::FormatIQ24))
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{
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agcFactor = m_agc.feedAndGetValue(ci);
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inMagSq = m_agc.getMagSq();
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}
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else
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{
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inMagSq = ci.real()*ci.real() + ci.imag()*ci.imag();
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}
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m_inMovingAverage.feed(inMagSq / (SDR_RX_SCALED*SDR_RX_SCALED));
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m_inMagsq = m_inMovingAverage.average();
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Sample ss(ci.real(), ci.imag());
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m_sampleBuffer.push_back(ss);
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m_sampleDistanceRemain += m_channelSampleRate / m_settings.m_outputSampleRate;
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calculateSquelch(m_inMagsq);
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if (m_settings.m_sampleFormat == UDPSinkSettings::FormatLSB) // binaural LSB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, false);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? sideband[i].real() * m_settings.m_gain : 0;
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r = m_squelchOpen ? sideband[i].imag() * m_settings.m_gain : 0;
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udpWrite(l, r);
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m_outMovingAverage.feed((l*l + r*r) / (SDR_RX_SCALED*SDR_RX_SCALED));
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}
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}
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}
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if (m_settings.m_sampleFormat == UDPSinkSettings::FormatUSB) // binaural USB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, true);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? sideband[i].real() * m_settings.m_gain : 0;
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r = m_squelchOpen ? sideband[i].imag() * m_settings.m_gain : 0;
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udpWrite(l, r);
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m_outMovingAverage.feed((l*l + r*r) / (SDR_RX_SCALED*SDR_RX_SCALED));
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}
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}
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}
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else if (m_settings.m_sampleFormat == UDPSinkSettings::FormatNFM)
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{
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Real discri = m_squelchOpen ? m_phaseDiscri.phaseDiscriminator(ci) * m_settings.m_gain : 0;
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udpWriteNorm(discri, discri);
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m_outMovingAverage.feed(discri*discri);
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}
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else if (m_settings.m_sampleFormat == UDPSinkSettings::FormatNFMMono)
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{
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Real discri = m_squelchOpen ? m_phaseDiscri.phaseDiscriminator(ci) * m_settings.m_gain : 0;
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udpWriteNormMono(discri);
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m_outMovingAverage.feed(discri*discri);
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}
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else if (m_settings.m_sampleFormat == UDPSinkSettings::FormatLSBMono) // Monaural LSB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, false);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? (sideband[i].real() + sideband[i].imag()) * 0.7 * m_settings.m_gain : 0;
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udpWriteMono(l);
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m_outMovingAverage.feed((l * l) / (SDR_RX_SCALED*SDR_RX_SCALED));
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}
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}
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}
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else if (m_settings.m_sampleFormat == UDPSinkSettings::FormatUSBMono) // Monaural USB
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{
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ci *= agcFactor;
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int n_out = UDPFilter->runSSB(ci, &sideband, true);
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if (n_out)
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{
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for (int i = 0; i < n_out; i++)
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{
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l = m_squelchOpen ? (sideband[i].real() + sideband[i].imag()) * 0.7 * m_settings.m_gain : 0;
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udpWriteMono(l);
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m_outMovingAverage.feed((l * l) / (SDR_RX_SCALED*SDR_RX_SCALED));
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}
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}
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}
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else if (m_settings.m_sampleFormat == UDPSinkSettings::FormatAMMono)
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{
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Real amplitude = m_squelchOpen ? sqrt(inMagSq) * agcFactor * m_settings.m_gain : 0;
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FixReal demod = (FixReal) amplitude;
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udpWriteMono(demod);
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m_outMovingAverage.feed((amplitude/SDR_RX_SCALEF)*(amplitude/SDR_RX_SCALEF));
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}
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else if (m_settings.m_sampleFormat == UDPSinkSettings::FormatAMNoDCMono)
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{
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if (m_squelchOpen)
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{
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double demodf = sqrt(inMagSq);
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m_amMovingAverage.feed(demodf);
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Real amplitude = (demodf - m_amMovingAverage.average()) * agcFactor * m_settings.m_gain;
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FixReal demod = (FixReal) amplitude;
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udpWriteMono(demod);
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m_outMovingAverage.feed((amplitude/SDR_RX_SCALEF)*(amplitude/SDR_RX_SCALEF));
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}
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else
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{
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udpWriteMono(0);
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m_outMovingAverage.feed(0);
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}
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}
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else if (m_settings.m_sampleFormat == UDPSinkSettings::FormatAMBPFMono)
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{
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if (m_squelchOpen)
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{
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double demodf = sqrt(inMagSq);
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demodf = m_bandpass.filter(demodf);
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Real amplitude = demodf * agcFactor * m_settings.m_gain;
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FixReal demod = (FixReal) amplitude;
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udpWriteMono(demod);
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m_outMovingAverage.feed((amplitude/SDR_RX_SCALEF)*(amplitude/SDR_RX_SCALEF));
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}
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else
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{
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udpWriteMono(0);
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m_outMovingAverage.feed(0);
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}
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}
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else // Raw I/Q samples
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{
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if (m_squelchOpen)
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{
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udpWrite(ci.real() * m_settings.m_gain, ci.imag() * m_settings.m_gain);
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m_outMovingAverage.feed((inMagSq*m_settings.m_gain*m_settings.m_gain) / (SDR_RX_SCALED*SDR_RX_SCALED));
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}
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else
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{
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udpWrite(0, 0);
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m_outMovingAverage.feed(0);
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}
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}
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m_magsq = m_outMovingAverage.average();
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}
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}
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//qDebug() << "UDPSink::feed: " << m_sampleBuffer.size() * 4;
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if ((m_spectrum != 0) && (m_spectrumEnabled)) {
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m_spectrum->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), m_spectrumPositiveOnly);
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}
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}
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void UDPSinkSink::audioReadyRead()
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{
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while (m_audioSocket->hasPendingDatagrams())
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{
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qint64 pendingDataSize = m_audioSocket->pendingDatagramSize();
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qint64 udpReadBytes = m_audioSocket->readDatagram(m_udpAudioBuf, pendingDataSize, 0, 0);
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//qDebug("UDPSink::audioReadyRead: %lld", udpReadBytes);
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if (m_settings.m_audioActive)
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{
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if (m_settings.m_audioStereo)
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{
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for (int i = 0; i < udpReadBytes - 3; i += 4)
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{
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qint16 l_sample = (qint16) *(&m_udpAudioBuf[i]);
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qint16 r_sample = (qint16) *(&m_udpAudioBuf[i+2]);
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m_audioBuffer[m_audioBufferFill].l = l_sample * m_settings.m_volume;
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m_audioBuffer[m_audioBufferFill].r = r_sample * m_settings.m_volume;
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++m_audioBufferFill;
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if (m_audioBufferFill >= m_audioBuffer.size())
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{
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std::size_t res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], std::min(m_audioBufferFill, m_audioBuffer.size()));
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if (res != m_audioBufferFill) {
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qDebug("WFMDemodSink::feed: %lu/%lu audio samples written", res, m_audioBufferFill);
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}
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m_audioBufferFill = 0;
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}
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}
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}
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else
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{
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for (int i = 0; i < udpReadBytes - 1; i += 2)
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{
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qint16 sample = (qint16) *(&m_udpAudioBuf[i]);
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m_audioBuffer[m_audioBufferFill].l = sample * m_settings.m_volume;
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m_audioBuffer[m_audioBufferFill].r = sample * m_settings.m_volume;
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++m_audioBufferFill;
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if (m_audioBufferFill >= m_audioBuffer.size())
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{
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uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill);
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if (res != m_audioBufferFill) {
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qDebug("UDPSinkSink::audioReadyRead: (mono) lost %lu samples", m_audioBufferFill - res);
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}
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m_audioBufferFill = 0;
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}
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}
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}
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if (m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill) != m_audioBufferFill) {
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qDebug("UDPSinkSink::audioReadyRead: lost samples");
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}
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m_audioBufferFill = 0;
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}
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}
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}
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void UDPSinkSink::applyChannelSettings(int channelSampleRate, int channelFrequencyOffset, bool force)
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{
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qDebug() << "UDPSinkSink::applyChannelSettings:"
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<< " channelSampleRate: " << channelSampleRate
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<< " channelFrequencyOffset: " << channelFrequencyOffset;
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if((channelFrequencyOffset != m_channelFrequencyOffset) ||
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(channelSampleRate != m_channelSampleRate) || force)
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{
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m_nco.setFreq(-channelFrequencyOffset, channelSampleRate);
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}
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if ((channelSampleRate != m_channelSampleRate) || force)
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{
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m_interpolator.create(16, channelSampleRate, m_settings.m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = channelSampleRate / m_settings.m_outputSampleRate;
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}
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m_channelSampleRate = channelSampleRate;
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m_channelFrequencyOffset = channelFrequencyOffset;
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}
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void UDPSinkSink::applySettings(const UDPSinkSettings& settings, bool force)
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{
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qDebug() << "UDPSinkSink::applySettings:"
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<< " m_inputFrequencyOffset: " << settings.m_inputFrequencyOffset
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<< " m_audioActive: " << settings.m_audioActive
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<< " m_audioStereo: " << settings.m_audioStereo
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<< " m_gain: " << settings.m_gain
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<< " m_volume: " << settings.m_volume
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<< " m_squelchEnabled: " << settings.m_squelchEnabled
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<< " m_squelchdB: " << settings.m_squelchdB
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<< " m_squelchGate" << settings.m_squelchGate
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<< " m_agc" << settings.m_agc
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<< " m_sampleFormat: " << settings.m_sampleFormat
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<< " m_outputSampleRate: " << settings.m_outputSampleRate
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<< " m_rfBandwidth: " << settings.m_rfBandwidth
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<< " m_fmDeviation: " << settings.m_fmDeviation
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<< " m_udpAddressStr: " << settings.m_udpAddress
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<< " m_udpPort: " << settings.m_udpPort
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<< " m_audioPort: " << settings.m_audioPort
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<< " m_streamIndex: " << settings.m_streamIndex
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<< " m_useReverseAPI: " << settings.m_useReverseAPI
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<< " m_reverseAPIAddress: " << settings.m_reverseAPIAddress
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<< " m_reverseAPIPort: " << settings.m_reverseAPIPort
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<< " m_reverseAPIDeviceIndex: " << settings.m_reverseAPIDeviceIndex
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<< " m_reverseAPIChannelIndex: " << settings.m_reverseAPIChannelIndex
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<< " force: " << force;
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if ((settings.m_audioActive != m_settings.m_audioActive) || force)
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{
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if (settings.m_audioActive) {
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m_audioBufferFill = 0;
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}
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}
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if ((settings.m_inputFrequencyOffset != m_settings.m_inputFrequencyOffset) ||
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(settings.m_rfBandwidth != m_settings.m_rfBandwidth) ||
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(settings.m_outputSampleRate != m_settings.m_outputSampleRate) || force)
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{
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m_interpolator.create(16, m_channelSampleRate, settings.m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_channelSampleRate / settings.m_outputSampleRate;
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if ((settings.m_sampleFormat == UDPSinkSettings::FormatLSB) ||
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(settings.m_sampleFormat == UDPSinkSettings::FormatLSBMono) ||
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(settings.m_sampleFormat == UDPSinkSettings::FormatUSB) ||
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(settings.m_sampleFormat == UDPSinkSettings::FormatUSBMono))
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{
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m_squelchGate = settings.m_outputSampleRate * 0.05;
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}
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else
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{
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m_squelchGate = (settings.m_outputSampleRate * settings.m_squelchGate) / 100;
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}
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m_squelchRelease = (settings.m_outputSampleRate * settings.m_squelchGate) / 100;
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initSquelch(m_squelchOpen);
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m_agc.resize(settings.m_outputSampleRate/5, settings.m_outputSampleRate/20, m_agcTarget); // Fixed 200 ms
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int stepDownDelay = (settings.m_outputSampleRate * (settings.m_squelchGate == 0 ? 1 : settings.m_squelchGate))/100;
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m_agc.setStepDownDelay(stepDownDelay);
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m_agc.setGate(settings.m_outputSampleRate * 0.05);
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m_bandpass.create(301, settings.m_outputSampleRate, 300.0, settings.m_rfBandwidth / 2.0f);
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m_inMovingAverage.resize(settings.m_outputSampleRate * 0.01, 1e-10); // 10 ms
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m_amMovingAverage.resize(settings.m_outputSampleRate * 0.005, 1e-10); // 5 ms
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m_outMovingAverage.resize(settings.m_outputSampleRate * 0.01, 1e-10); // 10 ms
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}
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if ((settings.m_squelchGate != m_settings.m_squelchGate) || force)
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{
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if ((settings.m_sampleFormat == UDPSinkSettings::FormatLSB) ||
|
|
(settings.m_sampleFormat == UDPSinkSettings::FormatLSBMono) ||
|
|
(settings.m_sampleFormat == UDPSinkSettings::FormatUSB) ||
|
|
(settings.m_sampleFormat == UDPSinkSettings::FormatUSBMono))
|
|
{
|
|
m_squelchGate = settings.m_outputSampleRate * 0.05;
|
|
}
|
|
else
|
|
{
|
|
m_squelchGate = (settings.m_outputSampleRate * settings.m_squelchGate)/100;
|
|
}
|
|
|
|
m_squelchRelease = (settings.m_outputSampleRate * settings.m_squelchGate)/100;
|
|
initSquelch(m_squelchOpen);
|
|
int stepDownDelay = (settings.m_outputSampleRate * (settings.m_squelchGate == 0 ? 1 : settings.m_squelchGate))/100;
|
|
m_agc.setStepDownDelay(stepDownDelay); // same delay for up and down
|
|
}
|
|
|
|
if ((settings.m_squelchdB != m_settings.m_squelchdB) || force)
|
|
{
|
|
m_squelch = CalcDb::powerFromdB(settings.m_squelchdB);
|
|
m_agc.setThreshold(m_squelch*(1<<23));
|
|
}
|
|
|
|
if ((settings.m_udpAddress != m_settings.m_udpAddress) || force)
|
|
{
|
|
m_udpBuffer16->setAddress(const_cast<QString&>(settings.m_udpAddress));
|
|
m_udpBufferMono16->setAddress(const_cast<QString&>(settings.m_udpAddress));
|
|
m_udpBuffer24->setAddress(const_cast<QString&>(settings.m_udpAddress));
|
|
}
|
|
|
|
if ((settings.m_udpPort != m_settings.m_udpPort) || force)
|
|
{
|
|
m_udpBuffer16->setPort(settings.m_udpPort);
|
|
m_udpBufferMono16->setPort(settings.m_udpPort);
|
|
m_udpBuffer24->setPort(settings.m_udpPort);
|
|
}
|
|
|
|
if ((settings.m_audioPort != m_settings.m_audioPort) || force)
|
|
{
|
|
disconnect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()));
|
|
delete m_audioSocket;
|
|
m_audioSocket = new QUdpSocket(this);
|
|
|
|
if (m_audioSocket->bind(QHostAddress::LocalHost, settings.m_audioPort))
|
|
{
|
|
connect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()), Qt::QueuedConnection);
|
|
qDebug("UDPSinkSink::handleMessage: audio socket bound to port %d", settings.m_audioPort);
|
|
}
|
|
else
|
|
{
|
|
qWarning("UDPSinkSink::handleMessage: cannot bind audio socket");
|
|
}
|
|
}
|
|
|
|
if ((settings.m_fmDeviation != m_settings.m_fmDeviation) || force) {
|
|
m_phaseDiscri.setFMScaling((float) settings.m_outputSampleRate / (2.0f * settings.m_fmDeviation));
|
|
}
|
|
|
|
m_settings = settings;
|
|
}
|