mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-04 16:01:14 -05:00
303 lines
9.0 KiB
C++
303 lines
9.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2022 Edouard Griffiths, F4EXB //
|
|
// //
|
|
// 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 <QMutexLocker>
|
|
#include <QDebug>
|
|
|
|
#include "dsp/downchannelizer.h"
|
|
#include "dsp/basebandsamplesink.h"
|
|
#include "dsp/scopevis.h"
|
|
#include "dsp/dspcommands.h"
|
|
|
|
#include "doa2baseband.h"
|
|
#include "doa2settings.h"
|
|
|
|
|
|
MESSAGE_CLASS_DEFINITION(DOA2Baseband::MsgConfigureChannelizer, Message)
|
|
MESSAGE_CLASS_DEFINITION(DOA2Baseband::MsgSignalNotification, Message)
|
|
MESSAGE_CLASS_DEFINITION(DOA2Baseband::MsgConfigureCorrelation, Message)
|
|
|
|
DOA2Baseband::DOA2Baseband(int fftSize) :
|
|
m_correlator(fftSize),
|
|
m_correlationType(DOA2Settings::CorrelationFFT),
|
|
m_fftSize(fftSize),
|
|
m_samplesCount(0),
|
|
m_magSum(0.0f),
|
|
m_wphSum(0.0f),
|
|
m_phi(0.0f),
|
|
m_magThreshold(0.0f),
|
|
m_fftAvg(1),
|
|
m_fftAvgCount(0),
|
|
m_scopeSink(nullptr)
|
|
{
|
|
m_sampleMIFifo.init(2, 96000 * 8);
|
|
m_vbegin.resize(2);
|
|
|
|
for (int i = 0; i < 2; i++)
|
|
{
|
|
m_sinks[i].setStreamIndex(i);
|
|
m_channelizers[i] = new DownChannelizer(&m_sinks[i]);
|
|
m_sizes[i] = 0;
|
|
}
|
|
|
|
QObject::connect(
|
|
&m_sampleMIFifo,
|
|
&SampleMIFifo::dataSyncReady,
|
|
this,
|
|
&DOA2Baseband::handleData,
|
|
Qt::QueuedConnection
|
|
);
|
|
|
|
connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
|
|
m_lastStream = 0;
|
|
}
|
|
|
|
DOA2Baseband::~DOA2Baseband()
|
|
{
|
|
for (int i = 0; i < 2; i++)
|
|
{
|
|
delete m_channelizers[i];
|
|
}
|
|
}
|
|
|
|
void DOA2Baseband::reset()
|
|
{
|
|
QMutexLocker mutexLocker(&m_mutex);
|
|
m_sampleMIFifo.reset();
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
m_sinks[i].reset();
|
|
}
|
|
}
|
|
|
|
void DOA2Baseband::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, unsigned int streamIndex)
|
|
{
|
|
if (streamIndex > 1) {
|
|
return;
|
|
}
|
|
|
|
if (streamIndex == m_lastStream) {
|
|
qWarning("DOA2Baseband::feed: twice same stream in a row: %u", streamIndex);
|
|
}
|
|
|
|
m_lastStream = streamIndex;
|
|
m_vbegin[streamIndex] = begin;
|
|
m_sizes[streamIndex] = end - begin;
|
|
|
|
if (streamIndex == 1)
|
|
{
|
|
if (m_sizes[0] != m_sizes[1])
|
|
{
|
|
qWarning("DOA2Baseband::feed: unequal sizes: [0]: %d [1]: %d", m_sizes[0], m_sizes[1]);
|
|
m_sampleMIFifo.writeSync(m_vbegin, std::min(m_sizes[0], m_sizes[1]));
|
|
}
|
|
else
|
|
{
|
|
m_sampleMIFifo.writeSync(m_vbegin, m_sizes[0]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DOA2Baseband::handleData()
|
|
{
|
|
QMutexLocker mutexLocker(&m_mutex);
|
|
|
|
const std::vector<SampleVector>& data = m_sampleMIFifo.getData();
|
|
|
|
unsigned int ipart1begin;
|
|
unsigned int ipart1end;
|
|
unsigned int ipart2begin;
|
|
unsigned int ipart2end;
|
|
|
|
while ((m_sampleMIFifo.fillSync() > 0) && (m_inputMessageQueue.size() == 0))
|
|
{
|
|
m_sampleMIFifo.readSync(ipart1begin, ipart1end, ipart2begin, ipart2end);
|
|
|
|
if (ipart1begin != ipart1end) { // first part of FIFO data
|
|
processFifo(data, ipart1begin, ipart1end);
|
|
}
|
|
|
|
if (ipart2begin != ipart2end) { // second part of FIFO data (used when block wraps around)
|
|
processFifo(data, ipart2begin, ipart2end);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DOA2Baseband::processFifo(const std::vector<SampleVector>& data, unsigned int ibegin, unsigned int iend)
|
|
{
|
|
for (unsigned int stream = 0; stream < 2; stream++) {
|
|
m_channelizers[stream]->feed(data[stream].begin() + ibegin, data[stream].begin() + iend);
|
|
}
|
|
|
|
run();
|
|
}
|
|
|
|
void DOA2Baseband::run()
|
|
{
|
|
if (m_correlator.performCorr(m_sinks[0].getData(), m_sinks[0].getSize(), m_sinks[1].getData(), m_sinks[1].getSize()))
|
|
{
|
|
if (m_correlationType == DOA2Settings::CorrelationType::CorrelationFFT) {
|
|
processDOA(m_correlator.m_xcorr.begin(), m_correlator.m_processed);
|
|
}
|
|
|
|
if (m_scopeSink)
|
|
{
|
|
std::vector<SampleVector::const_iterator> vbegin;
|
|
vbegin.push_back(m_correlator.m_tcorr.begin());
|
|
m_scopeSink->feed(vbegin, m_correlator.m_processed);
|
|
}
|
|
}
|
|
|
|
for (int i = 0; i < 2; i++)
|
|
{
|
|
std::copy(
|
|
m_sinks[i].getData().begin() + m_correlator.m_processed,
|
|
m_sinks[i].getData().begin() + m_correlator.m_processed + m_correlator.m_remaining[i],
|
|
m_sinks[i].getData().begin()
|
|
);
|
|
|
|
m_sinks[i].setDataStart(m_correlator.m_remaining[i]);
|
|
}
|
|
}
|
|
|
|
void DOA2Baseband::handleInputMessages()
|
|
{
|
|
qDebug("DOA2Baseband::handleInputMessage");
|
|
Message* message;
|
|
|
|
while ((message = m_inputMessageQueue.pop()) != 0)
|
|
{
|
|
if (handleMessage(*message)) {
|
|
delete message;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool DOA2Baseband::handleMessage(const Message& cmd)
|
|
{
|
|
if (MsgConfigureChannelizer::match(cmd))
|
|
{
|
|
QMutexLocker mutexLocker(&m_mutex);
|
|
MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
|
|
int log2Decim = cfg.getLog2Decim();
|
|
int filterChainHash = cfg.getFilterChainHash();
|
|
|
|
qDebug() << "DOA2Baseband::handleMessage: MsgConfigureChannelizer:"
|
|
<< " log2Decim: " << log2Decim
|
|
<< " filterChainHash: " << filterChainHash;
|
|
|
|
for (int i = 0; i < 2; i++)
|
|
{
|
|
m_channelizers[i]->setDecimation(log2Decim, filterChainHash);
|
|
m_sinks[i].reset();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
else if (MsgSignalNotification::match(cmd))
|
|
{
|
|
QMutexLocker mutexLocker(&m_mutex);
|
|
MsgSignalNotification& cfg = (MsgSignalNotification&) cmd;
|
|
int inputSampleRate = cfg.getInputSampleRate();
|
|
qint64 centerFrequency = cfg.getCenterFrequency();
|
|
int streamIndex = cfg.getStreamIndex();
|
|
|
|
qDebug() << "DOA2Baseband::handleMessage: MsgSignalNotification:"
|
|
<< " inputSampleRate: " << inputSampleRate
|
|
<< " centerFrequency: " << centerFrequency
|
|
<< " streamIndex: " << streamIndex;
|
|
|
|
if (streamIndex < 2)
|
|
{
|
|
m_channelizers[streamIndex]->setBasebandSampleRate(inputSampleRate);
|
|
m_sinks[streamIndex].reset();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureCorrelation::match(cmd))
|
|
{
|
|
QMutexLocker mutexLocker(&m_mutex);
|
|
MsgConfigureCorrelation& cfg = (MsgConfigureCorrelation&) cmd;
|
|
m_correlationType = cfg.getCorrelationType();
|
|
|
|
qDebug() << "DOA2Baseband::handleMessage: MsgConfigureCorrelation:"
|
|
<< " correlationType: " << m_correlationType;
|
|
|
|
m_correlator.setCorrType(m_correlationType);
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
qDebug("DOA2Baseband::handleMessage: unhandled: %s", cmd.getIdentifier());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void DOA2Baseband ::setBasebandSampleRate(unsigned int sampleRate)
|
|
{
|
|
for (int istream = 0; istream < 2; istream++)
|
|
{
|
|
m_channelizers[istream]->setBasebandSampleRate(sampleRate);
|
|
m_sinks[istream].reset();
|
|
}
|
|
}
|
|
|
|
void DOA2Baseband::setFFTAveraging(int nbFFT)
|
|
{
|
|
qDebug("DOA2Baseband::setFFTAveraging: %d", nbFFT);
|
|
m_fftAvg = nbFFT < 1 ? 1 : nbFFT;
|
|
m_fftAvgCount = 0;
|
|
m_magSum = 0;
|
|
m_wphSum = 0;
|
|
m_samplesCount = 0;
|
|
}
|
|
|
|
void DOA2Baseband::processDOA(const std::vector<Complex>::iterator& begin, int nbSamples, bool reverse)
|
|
{
|
|
const std::vector<Complex>::iterator end = begin + nbSamples;
|
|
|
|
for (std::vector<Complex>::iterator it = begin; it != end; ++it)
|
|
{
|
|
float ph = std::arg(*it);
|
|
double mag = std::norm(*it);
|
|
|
|
if (mag > m_magThreshold)
|
|
{
|
|
m_magSum += mag;
|
|
m_wphSum += mag*ph;
|
|
}
|
|
|
|
if (++m_samplesCount == m_fftSize)
|
|
{
|
|
if (m_wphSum != 0)
|
|
{
|
|
if (++m_fftAvgCount == m_fftAvg)
|
|
{
|
|
m_phi = reverse ? -(m_wphSum / m_magSum) : (m_wphSum / m_magSum);
|
|
m_fftAvgCount = 0;
|
|
}
|
|
}
|
|
|
|
m_magSum = 0;
|
|
m_wphSum = 0;
|
|
m_samplesCount = 0;
|
|
}
|
|
}
|
|
}
|