mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-17 13:51:47 -05:00
5d5b221e83
Add loop bandwidth and other PLL controls to Channel Analyzer GUI. Fix bug where PLL lock frequency would be incorrect by the decimation factor.
131 lines
4.7 KiB
C++
131 lines
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 "audio/audiofifo.h"
|
|
|
|
#include "util/movingaverage.h"
|
|
|
|
#include "chanalyzersettings.h"
|
|
|
|
class BasebandSampleSink;
|
|
|
|
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 setSampleSink(BasebandSampleSink* sampleSink) { m_sampleSink = sampleSink; }
|
|
|
|
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;
|
|
|
|
BasebandSampleSink* m_sampleSink;
|
|
|
|
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
|