sdrangel/plugins/channelrx/chanalyzer/chanalyzersink.h

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4.7 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019 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/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_CHANALYZERSINK_H
#define INCLUDE_CHANALYZERSINK_H
#include "dsp/channelsamplesink.h"
#include "dsp/interpolator.h"
#include "dsp/decimatorc.h"
#include "dsp/ncof.h"
#include "dsp/fftcorr.h"
#include "dsp/fftfilt.h"
#include "dsp/phaselockcomplex.h"
#include "dsp/freqlockcomplex.h"
#include "dsp/costasloop.h"
#include "util/movingaverage.h"
#include "chanalyzersettings.h"
class ScopeVis;
class ChannelAnalyzerSink : public ChannelSampleSink {
public:
ChannelAnalyzerSink();
~ChannelAnalyzerSink();
virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end);
void applyChannelSettings(int channelSampleRate, int sinkSampleRate, int channelFrequencyOffset, bool force = false);
void applySettings(const ChannelAnalyzerSettings& settings, bool force = false);
double getMagSq() const { return m_magsq; }
double getMagSqAvg() const { return (double) m_channelPowerAvg; }
bool isPllLocked() const;
Real getPllFrequency() const;
Real getPllDeltaPhase() const;
Real getPllPhase() const;
void setScopeVis(ScopeVis* scopeVis) { m_scopeVis = scopeVis; }
static const unsigned int m_corrFFTLen;
static const unsigned int m_ssbFftLen;
private:
int m_channelSampleRate;
int m_channelFrequencyOffset;
int m_sinkSampleRate;
ChannelAnalyzerSettings m_settings;
bool m_usb;
double m_magsq;
NCOF m_nco;
Interpolator m_interpolator;
Real m_interpolatorDistance;
Real m_interpolatorDistanceRemain;
PhaseLockComplex m_pll;
FreqLockComplex m_fll;
CostasLoop m_costasLoop;
DecimatorC m_decimator;
fftfilt* SSBFilter;
fftfilt* DSBFilter;
fftfilt* RRCFilter;
fftcorr* m_corr;
SampleVector m_sampleBuffer;
MovingAverageUtil<double, double, 480> m_channelPowerAvg;
ScopeVis* m_scopeVis;
void setFilters(int sampleRate, float bandwidth, float lowCutoff);
void processOneSample(Complex& c, fftfilt::cmplx *sideband);
int getActualSampleRate();
void applySampleRate();
inline void feedOneSample(const fftfilt::cmplx& s, const fftfilt::cmplx& pll)
{
switch (m_settings.m_inputType)
{
case ChannelAnalyzerSettings::InputPLL:
{
if (m_settings.m_ssb & !m_usb) { // invert spectrum for LSB
m_sampleBuffer.push_back(Sample(pll.imag()*SDR_RX_SCALEF, pll.real()*SDR_RX_SCALEF));
} else {
m_sampleBuffer.push_back(Sample(pll.real()*SDR_RX_SCALEF, pll.imag()*SDR_RX_SCALEF));
}
}
break;
case ChannelAnalyzerSettings::InputAutoCorr:
{
std::complex<float> a = m_corr->run(s/SDR_RX_SCALEF, 0);
if (m_settings.m_ssb & !m_usb) { // invert spectrum for LSB
m_sampleBuffer.push_back(Sample(a.imag(), a.real()));
} else {
m_sampleBuffer.push_back(Sample(a.real(), a.imag()));
}
}
break;
case ChannelAnalyzerSettings::InputSignal:
default:
{
if (m_settings.m_ssb & !m_usb) { // invert spectrum for LSB
m_sampleBuffer.push_back(Sample(s.imag(), s.real()));
} else {
m_sampleBuffer.push_back(Sample(s.real(), s.imag()));
}
}
break;
}
}
};
#endif // INCLUDE_CHANALYZERSINK_H