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sdrangel/plugins/channelrx/demoddsd/dsddemodsink.cpp

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019-2023 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <stdio.h>
#include <complex.h>
#include <QTime>
#include <QDebug>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QBuffer>
#include "SWGChannelSettings.h"
#include "SWGDSDDemodSettings.h"
#include "SWGChannelReport.h"
#include "SWGDSDDemodReport.h"
#include "SWGRDSReport.h"
#include "dsp/dspengine.h"
#include "dsp/basebandsamplesink.h"
#include "dsp/datafifo.h"
#include "dsp/dspcommands.h"
#include "feature/feature.h"
#include "audio/audiooutputdevice.h"
#include "util/db.h"
#include "util/messagequeue.h"
#include "maincore.h"
#include "dsddemodsink.h"
DSDDemodSink::DSDDemodSink() :
m_channelSampleRate(48000),
m_channelFrequencyOffset(0),
m_ambeFeature(nullptr),
m_audioSampleRate(48000),
m_interpolatorDistance(0.0f),
m_interpolatorDistanceRemain(0.0f),
m_sampleCount(0),
m_squelchCount(0),
m_squelchGate(0),
m_squelchLevel(1e-4),
m_squelchOpen(false),
m_squelchDelayLine(24000),
m_audioFifo1(48000),
m_audioFifo2(48000),
m_scopeXY(nullptr),
m_scopeEnabled(true),
m_dsdDecoder(),
m_signalFormat(signalFormatNone)
{
m_audioBuffer.resize(1<<14);
m_demodBuffer.resize(1<<12);
m_demodBufferFill = 0;
m_sampleBuffer = new FixReal[1<<17]; // 128 kS
m_sampleBufferIndex = 0;
m_scaleFromShort = SDR_RX_SAMP_SZ < sizeof(short)*8 ? 1 : 1<<(SDR_RX_SAMP_SZ - sizeof(short)*8);
m_magsq = 0.0f;
m_magsqSum = 0.0f;
m_magsqPeak = 0.0f;
m_magsqCount = 0;
applySettings(m_settings, true);
applyChannelSettings(m_channelSampleRate, m_channelFrequencyOffset, true);
}
DSDDemodSink::~DSDDemodSink()
{
delete[] m_sampleBuffer;
}
void DSDDemodSink::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end)
{ Complex ci;
int samplesPerSymbol = m_dsdDecoder.getSamplesPerSymbol();
m_scopeSampleBuffer.clear();
m_dsdDecoder.enableMbelib(!m_ambeFeature); // disable mbelib if DV serial support is present and activated else enable it
for (SampleVector::const_iterator it = begin; it != end; ++it)
{
Complex c(it->real(), it->imag());
c *= m_nco.nextIQ();
if (m_interpolator.decimate(&m_interpolatorDistanceRemain, c, &ci))
{
FixReal sample, delayedSample;
qint16 sampleDSD;
Real re = ci.real() / SDR_RX_SCALED;
Real im = ci.imag() / SDR_RX_SCALED;
Real magsq = re*re + im*im;
m_movingAverage(magsq);
m_magsqSum += magsq;
if (magsq > m_magsqPeak)
{
m_magsqPeak = magsq;
}
m_magsqCount++;
Real demod = m_phaseDiscri.phaseDiscriminator(ci) * m_settings.m_demodGain; // [-1.0:1.0]
m_sampleCount++;
// AF processing
if (m_movingAverage.asDouble() > m_squelchLevel)
{
if (m_squelchGate > 0)
{
if (m_squelchCount < m_squelchGate*2) {
m_squelchCount++;
}
m_squelchDelayLine.write(demod);
m_squelchOpen = m_squelchCount > m_squelchGate;
}
else
{
m_squelchOpen = true;
}
}
else
{
if (m_squelchGate > 0)
{
if (m_squelchCount > 0) {
m_squelchCount--;
}
m_squelchDelayLine.write(0);
m_squelchOpen = m_squelchCount > m_squelchGate;
}
else
{
m_squelchOpen = false;
}
}
if (m_squelchOpen)
{
if (m_squelchGate > 0)
{
sampleDSD = m_squelchDelayLine.readBack(m_squelchGate) * 32768.0f; // DSD decoder takes int16 samples
sample = m_squelchDelayLine.readBack(m_squelchGate) * SDR_RX_SCALEF; // scale to sample size
}
else
{
sampleDSD = demod * 32768.0f; // DSD decoder takes int16 samples
sample = demod * SDR_RX_SCALEF; // scale to sample size
}
}
else
{
sampleDSD = 0;
sample = 0;
}
m_dsdDecoder.pushSample(sampleDSD);
m_demodBuffer[m_demodBufferFill] = sampleDSD;
++m_demodBufferFill;
if (m_demodBufferFill >= m_demodBuffer.size())
{
QList<ObjectPipe*> dataPipes;
MainCore::instance()->getDataPipes().getDataPipes(m_channel, "demod", dataPipes);
if (dataPipes.size() > 0)
{
QList<ObjectPipe*>::iterator it = dataPipes.begin();
for (; it != dataPipes.end(); ++it)
{
DataFifo *fifo = qobject_cast<DataFifo*>((*it)->m_element);
if (fifo) {
fifo->write((quint8*) &m_demodBuffer[0], m_demodBuffer.size() * sizeof(qint16), DataFifo::DataTypeI16);
}
}
}
m_demodBufferFill = 0;
}
if (m_settings.m_enableCosineFiltering) { // show actual input to FSK demod
sample = m_dsdDecoder.getFilteredSample() * m_scaleFromShort;
}
if (m_sampleBufferIndex < (1<<17)-1) {
m_sampleBufferIndex++;
} else {
m_sampleBufferIndex = 0;
}
m_sampleBuffer[m_sampleBufferIndex] = sample;
if (m_sampleBufferIndex < samplesPerSymbol) {
delayedSample = m_sampleBuffer[(1<<17) - samplesPerSymbol + m_sampleBufferIndex]; // wrap
} else {
delayedSample = m_sampleBuffer[m_sampleBufferIndex - samplesPerSymbol];
}
if (m_settings.m_syncOrConstellation)
{
Sample s(sample, m_dsdDecoder.getSymbolSyncSample() * m_scaleFromShort * 0.84);
m_scopeSampleBuffer.push_back(s);
}
else
{
Sample s(sample, delayedSample); // I=signal, Q=signal delayed by 20 samples (2400 baud: lowest rate)
m_scopeSampleBuffer.push_back(s);
}
if (m_ambeFeature && isNotYSFWide())
{
if ((m_settings.m_slot1On) && m_dsdDecoder.mbeDVReady1())
{
if (!m_settings.m_audioMute)
{
DSPPushMbeFrame *msg = new DSPPushMbeFrame(
m_dsdDecoder.getMbeDVFrame1(),
m_dsdDecoder.getMbeRateIndex(),
m_settings.m_volume * 10.0,
m_settings.m_tdmaStereo ? 1 : 3, // left or both channels
m_settings.m_highPassFilter,
m_audioSampleRate/8000, // upsample from native 8k
&m_audioFifo1
);
m_ambeFeature->handleMessage(*msg);
delete msg;
}
m_dsdDecoder.resetMbeDV1();
}
if ((m_settings.m_slot2On) && m_dsdDecoder.mbeDVReady2())
{
if (!m_settings.m_audioMute)
{
DSPPushMbeFrame *msg = new DSPPushMbeFrame(
m_dsdDecoder.getMbeDVFrame2(),
m_dsdDecoder.getMbeRateIndex(),
m_settings.m_volume * 10.0,
m_settings.m_tdmaStereo ? 2 : 3, // right or both channels
m_settings.m_highPassFilter,
m_audioSampleRate/8000, // upsample from native 8k
&m_audioFifo2
);
m_ambeFeature->handleMessage(*msg);
delete msg;
}
m_dsdDecoder.resetMbeDV2();
}
}
m_interpolatorDistanceRemain += m_interpolatorDistance;
}
}
if (!m_ambeFeature)
{
if (m_settings.m_slot1On)
{
int nbAudioSamples;
short *dsdAudio = m_dsdDecoder.getAudio1(nbAudioSamples);
if (nbAudioSamples > 0)
{
if (!m_settings.m_audioMute) {
m_audioFifo1.write((const quint8*) dsdAudio, nbAudioSamples);
}
m_dsdDecoder.resetAudio1();
}
}
if (m_settings.m_slot2On)
{
int nbAudioSamples;
short *dsdAudio = m_dsdDecoder.getAudio2(nbAudioSamples);
if (nbAudioSamples > 0)
{
if (!m_settings.m_audioMute) {
m_audioFifo2.write((const quint8*) dsdAudio, nbAudioSamples);
}
m_dsdDecoder.resetAudio2();
}
}
}
if ((m_scopeXY != nullptr) && (m_scopeEnabled))
{
m_scopeXY->feed(m_scopeSampleBuffer.begin(), m_scopeSampleBuffer.end(), true); // true = real samples for what it's worth
}
}
void DSDDemodSink::applyAudioSampleRate(int sampleRate)
{
if (sampleRate < 0)
{
qWarning("DSDDemodSink::applyAudioSampleRate: invalid sample rate: %d", sampleRate);
return;
}
int upsampling = sampleRate / 8000;
qDebug("DSDDemodSink::applyAudioSampleRate: audio rate: %d upsample by %d", sampleRate, upsampling);
if (sampleRate % 8000 != 0) {
qDebug("DSDDemodSink::applyAudioSampleRate: audio will sound best with sample rates that are integer multiples of 8 kS/s");
}
m_dsdDecoder.setUpsampling(upsampling);
m_audioSampleRate = sampleRate;
QList<ObjectPipe*> pipes;
MainCore::instance()->getMessagePipes().getMessagePipes(m_channel, "reportdemod", pipes);
if (pipes.size() > 0)
{
for (const auto& pipe : pipes)
{
MessageQueue *messageQueue = qobject_cast<MessageQueue*>(pipe->m_element);
MainCore::MsgChannelDemodReport *msg = MainCore::MsgChannelDemodReport::create(m_channel, sampleRate);
messageQueue->push(msg);
}
}
}
void DSDDemodSink::applyChannelSettings(int channelSampleRate, int channelFrequencyOffset, bool force)
{
qDebug() << "DSDDemodSink::applyChannelSettings:"
<< " channelSampleRate: " << channelSampleRate
<< " inputFrequencyOffset: " << channelFrequencyOffset;
if ((channelFrequencyOffset != m_channelFrequencyOffset) ||
(channelSampleRate != m_channelSampleRate) || force)
{
m_nco.setFreq(-channelFrequencyOffset, channelSampleRate);
}
if ((channelSampleRate != m_channelSampleRate) || force)
{
m_interpolator.create(16, channelSampleRate, (m_settings.m_rfBandwidth) / 2.2);
m_interpolatorDistanceRemain = 0;
m_interpolatorDistance = (Real) channelSampleRate / (Real) 48000;
}
m_channelSampleRate = channelSampleRate;
m_channelFrequencyOffset = channelFrequencyOffset;
}
void DSDDemodSink::applySettings(const DSDDemodSettings& settings, bool force)
{
qDebug() << "DSDDemodSink::applySettings: "
<< " m_inputFrequencyOffset: " << settings.m_inputFrequencyOffset
<< " m_rfBandwidth: " << settings.m_rfBandwidth
<< " m_fmDeviation: " << settings.m_fmDeviation
<< " m_demodGain: " << settings.m_demodGain
<< " m_volume: " << settings.m_volume
<< " m_baudRate: " << settings.m_baudRate
<< " m_squelchGate" << settings.m_squelchGate
<< " m_squelch: " << settings.m_squelch
<< " m_audioMute: " << settings.m_audioMute
<< " m_enableCosineFiltering: " << settings.m_enableCosineFiltering
<< " m_syncOrConstellation: " << settings.m_syncOrConstellation
<< " m_slot1On: " << settings.m_slot1On
<< " m_slot2On: " << settings.m_slot2On
<< " m_tdmaStereo: " << settings.m_tdmaStereo
<< " m_pllLock: " << settings.m_pllLock
<< " m_highPassFilter: "<< settings.m_highPassFilter
<< " m_audioDeviceName: " << settings.m_audioDeviceName
<< " m_traceLengthMutliplier: " << settings.m_traceLengthMutliplier
<< " m_traceStroke: " << settings.m_traceStroke
<< " m_traceDecay: " << settings.m_traceDecay
<< " m_streamIndex: " << settings.m_streamIndex
<< " force: " << force;
if ((settings.m_rfBandwidth != m_settings.m_rfBandwidth) || force)
{
m_interpolator.create(16, m_channelSampleRate, (settings.m_rfBandwidth) / 2.2);
m_interpolatorDistanceRemain = 0;
m_interpolatorDistance = (Real) m_channelSampleRate / (Real) 48000;
//m_phaseDiscri.setFMScaling((float) settings.m_rfBandwidth / (float) settings.m_fmDeviation);
}
if ((settings.m_fmDeviation != m_settings.m_fmDeviation) || force)
{
m_phaseDiscri.setFMScaling(48000.0f / (2.0f*settings.m_fmDeviation));
}
if ((settings.m_squelchGate != m_settings.m_squelchGate) || force)
{
m_squelchGate = 480 * settings.m_squelchGate; // gate is given in 10s of ms at 48000 Hz audio sample rate
m_squelchCount = 0; // reset squelch open counter
}
if ((settings.m_squelch != m_settings.m_squelch) || force)
{
// input is a value in dB
m_squelchLevel = std::pow(10.0, settings.m_squelch / 10.0);
}
if ((settings.m_volume != m_settings.m_volume) || force)
{
m_dsdDecoder.setAudioGain(settings.m_volume);
}
if ((settings.m_baudRate != m_settings.m_baudRate) || force)
{
m_dsdDecoder.setBaudRate(settings.m_baudRate);
}
if ((settings.m_enableCosineFiltering != m_settings.m_enableCosineFiltering) || force)
{
m_dsdDecoder.enableCosineFiltering(settings.m_enableCosineFiltering);
}
if ((settings.m_tdmaStereo != m_settings.m_tdmaStereo) || force)
{
m_dsdDecoder.setTDMAStereo(settings.m_tdmaStereo);
}
if ((settings.m_pllLock != m_settings.m_pllLock) || force)
{
m_dsdDecoder.setSymbolPLLLock(settings.m_pllLock);
}
if ((settings.m_highPassFilter != m_settings.m_highPassFilter) || force)
{
m_dsdDecoder.useHPMbelib(settings.m_highPassFilter);
}
m_settings = settings;
}
void DSDDemodSink::configureMyPosition(float myLatitude, float myLongitude)
{
m_dsdDecoder.setMyPoint(myLatitude, myLongitude);
}
const char *DSDDemodSink::updateAndGetStatusText()
{
formatStatusText();
return m_formatStatusText;
}
bool DSDDemodSink::isNotYSFWide()
{
if (getDecoder().getSyncType() == DSDcc::DSDDecoder::DSDSyncYSF) {
return getDecoder().getYSFDecoder().getFICH().isNarrowMode();
}
return true;
}
void DSDDemodSink::formatStatusText()
{
switch (getDecoder().getSyncType())
{
case DSDcc::DSDDecoder::DSDSyncDMRDataMS:
case DSDcc::DSDDecoder::DSDSyncDMRDataP:
case DSDcc::DSDDecoder::DSDSyncDMRVoiceMS:
case DSDcc::DSDDecoder::DSDSyncDMRVoiceP:
if (m_signalFormat != signalFormatDMR)
{
strcpy(m_formatStatusText, "Sta: __ S1: __________________________ S2: __________________________");
}
switch (getDecoder().getStationType())
{
case DSDcc::DSDDecoder::DSDBaseStation:
memcpy(&m_formatStatusText[5], "BS ", 3);
break;
case DSDcc::DSDDecoder::DSDMobileStation:
memcpy(&m_formatStatusText[5], "MS ", 3);
break;
default:
memcpy(&m_formatStatusText[5], "NA ", 3);
break;
}
memcpy(&m_formatStatusText[12], getDecoder().getDMRDecoder().getSlot0Text(), 26);
memcpy(&m_formatStatusText[43], getDecoder().getDMRDecoder().getSlot1Text(), 26);
m_signalFormat = signalFormatDMR;
break;
case DSDcc::DSDDecoder::DSDSyncDStarHeaderN:
case DSDcc::DSDDecoder::DSDSyncDStarHeaderP:
case DSDcc::DSDDecoder::DSDSyncDStarN:
case DSDcc::DSDDecoder::DSDSyncDStarP:
if (m_signalFormat != signalFormatDStar)
{
// 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8
// 0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0..
strcpy(m_formatStatusText, "________/____>________|________>________|____________________|______:___/_____._");
// MY UR RPT1 RPT2 Info Loc Target
}
{
const std::string& rpt1 = getDecoder().getDStarDecoder().getRpt1();
const std::string& rpt2 = getDecoder().getDStarDecoder().getRpt2();
const std::string& mySign = getDecoder().getDStarDecoder().getMySign();
const std::string& yrSign = getDecoder().getDStarDecoder().getYourSign();
if (rpt1.length() > 0) { // 0 or 8
memcpy(&m_formatStatusText[23], rpt1.c_str(), 8);
}
if (rpt2.length() > 0) { // 0 or 8
memcpy(&m_formatStatusText[32], rpt2.c_str(), 8);
}
if (yrSign.length() > 0) { // 0 or 8
memcpy(&m_formatStatusText[14], yrSign.c_str(), 8);
}
if (mySign.length() > 0) { // 0 or 13
memcpy(&m_formatStatusText[0], mySign.c_str(), 13);
}
memcpy(&m_formatStatusText[41], getDecoder().getDStarDecoder().getInfoText(), 20);
memcpy(&m_formatStatusText[62], getDecoder().getDStarDecoder().getLocator(), 6);
snprintf(&m_formatStatusText[69], 82-69, "%03d/%07.1f",
getDecoder().getDStarDecoder().getBearing(),
getDecoder().getDStarDecoder().getDistance());
}
m_formatStatusText[82] = '\0';
m_signalFormat = signalFormatDStar;
break;
case DSDcc::DSDDecoder::DSDSyncDPMR:
snprintf(m_formatStatusText, 82, "%s CC: %04d OI: %08d CI: %08d",
DSDcc::DSDdPMR::dpmrFrameTypes[(int) getDecoder().getDPMRDecoder().getFrameType()],
getDecoder().getDPMRDecoder().getColorCode(),
getDecoder().getDPMRDecoder().getOwnId(),
getDecoder().getDPMRDecoder().getCalledId());
m_signalFormat = signalFormatDPMR;
break;
case DSDcc::DSDDecoder::DSDSyncNXDNP:
case DSDcc::DSDDecoder::DSDSyncNXDNN:
if (getDecoder().getNXDNDecoder().getRFChannel() == DSDcc::DSDNXDN::NXDNRCCH)
{
// 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8
// 0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0..
// RC r cc mm llllll ssss
snprintf(m_formatStatusText, 82, "RC %s %02d %02X %06X %02X",
getDecoder().getNXDNDecoder().isFullRate() ? "F" : "H",
getDecoder().getNXDNDecoder().getRAN(),
getDecoder().getNXDNDecoder().getMessageType(),
getDecoder().getNXDNDecoder().getLocationId(),
getDecoder().getNXDNDecoder().getServicesFlag());
}
else if ((getDecoder().getNXDNDecoder().getRFChannel() == DSDcc::DSDNXDN::NXDNRTCH)
|| (getDecoder().getNXDNDecoder().getRFChannel() == DSDcc::DSDNXDN::NXDNRDCH))
{
if (getDecoder().getNXDNDecoder().isIdle()) {
snprintf(m_formatStatusText, 82, "%s IDLE", getDecoder().getNXDNDecoder().getRFChannelStr());
}
else
{
// 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8
// 0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0..
// Rx r cc mm sssss>gddddd
snprintf(m_formatStatusText, 82, "%s %s %02d %02X %05d>%c%05d",
getDecoder().getNXDNDecoder().getRFChannelStr(),
getDecoder().getNXDNDecoder().isFullRate() ? "F" : "H",
getDecoder().getNXDNDecoder().getRAN(),
getDecoder().getNXDNDecoder().getMessageType(),
getDecoder().getNXDNDecoder().getSourceId(),
getDecoder().getNXDNDecoder().isGroupCall() ? 'G' : 'I',
getDecoder().getNXDNDecoder().getDestinationId());
}
}
else
{
// 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8
// 0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0..
// RU
snprintf(m_formatStatusText, 82, "RU");
}
m_signalFormat = signalFormatNXDN;
break;
case DSDcc::DSDDecoder::DSDSyncYSF:
// 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8
// 0....5....0....5....0....5....0....5....0....5....0....5....0....5....0....5....0..
// C V2 RI 0:7 WL000|ssssssssss>dddddddddd |UUUUUUUUUU>DDDDDDDDDD|44444
if (getDecoder().getYSFDecoder().getFICHError() == DSDcc::DSDYSF::FICHNoError)
{
snprintf(m_formatStatusText, 82, "%s ", DSDcc::DSDYSF::ysfChannelTypeText[(int) getDecoder().getYSFDecoder().getFICH().getFrameInformation()]);
}
else
{
snprintf(m_formatStatusText, 82, "%d ", (int) getDecoder().getYSFDecoder().getFICHError());
}
snprintf(&m_formatStatusText[2], 80, "%s %s %d:%d %c%c",
DSDcc::DSDYSF::ysfDataTypeText[(int) getDecoder().getYSFDecoder().getFICH().getDataType()],
DSDcc::DSDYSF::ysfCallModeText[(int) getDecoder().getYSFDecoder().getFICH().getCallMode()],
getDecoder().getYSFDecoder().getFICH().getBlockTotal(),
getDecoder().getYSFDecoder().getFICH().getFrameTotal(),
(getDecoder().getYSFDecoder().getFICH().isNarrowMode() ? 'N' : 'W'),
(getDecoder().getYSFDecoder().getFICH().isInternetPath() ? 'I' : 'L'));
if (getDecoder().getYSFDecoder().getFICH().isSquelchCodeEnabled())
{
snprintf(&m_formatStatusText[14], 82-14, "%03d", getDecoder().getYSFDecoder().getFICH().getSquelchCode());
}
else
{
strncpy(&m_formatStatusText[14], "---", 82-14);
}
char dest[13];
if (getDecoder().getYSFDecoder().radioIdMode())
{
snprintf(dest, 12, "%-5s:%-5s",
getDecoder().getYSFDecoder().getDestId(),
getDecoder().getYSFDecoder().getSrcId());
}
else
{
snprintf(dest, 11, "%-10s", getDecoder().getYSFDecoder().getDest());
}
snprintf(&m_formatStatusText[17], 82-17, "|%-10s>%s|%-10s>%-10s|%-5s",
getDecoder().getYSFDecoder().getSrc(),
dest,
getDecoder().getYSFDecoder().getUplink(),
getDecoder().getYSFDecoder().getDownlink(),
getDecoder().getYSFDecoder().getRem4());
m_signalFormat = signalFormatYSF;
break;
default:
m_signalFormat = signalFormatNone;
m_formatStatusText[0] = '\0';
break;
}
m_formatStatusText[82] = '\0'; // guard
}
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