1
0
mirror of https://github.com/f4exb/sdrangel.git synced 2024-12-23 18:15:45 -05:00
sdrangel/plugins/channelrx/demodnfm/nfmdemodsink.h
srcejon c0fc8c3b73 Don't call start() in Demod's constructors. #2102
SSDDemodGUI: Disable AGC widgets when AGC disabled.
2024-05-08 18:52:34 +01:00

159 lines
5.3 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019-2023 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// Copyright (C) 2020 Kacper Michajłow <kasper93@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/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_NFMDEMODSINK_H
#define INCLUDE_NFMDEMODSINK_H
#include <QVector>
#include "dsp/channelsamplesink.h"
#include "dsp/phasediscri.h"
#include "dsp/nco.h"
#include "dsp/interpolator.h"
#include "dsp/fftfilt.h"
#include "dsp/firfilter.h"
#include "dsp/afsquelch.h"
#include "dsp/ctcssdetector.h"
#include "dsp/dcscodes.h"
#include "util/movingaverage.h"
#include "util/doublebufferfifo.h"
#include "audio/audiofifo.h"
#include "dcsdetector.h"
#include "nfmdemodsettings.h"
class ChannelAPI;
class NFMDemodSink : public ChannelSampleSink {
public:
NFMDemodSink();
virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end);
bool getSquelchOpen() const { return m_squelchOpen; }
void getMagSqLevels(double& avg, double& peak, int& nbSamples)
{
if (m_magsqCount > 0)
{
m_magsq = m_magsqSum / m_magsqCount;
m_magSqLevelStore.m_magsq = m_magsq;
m_magSqLevelStore.m_magsqPeak = m_magsqPeak;
}
avg = m_magSqLevelStore.m_magsq;
peak = m_magSqLevelStore.m_magsqPeak;
nbSamples = m_magsqCount == 0 ? 1 : m_magsqCount;
m_magsqSum = 0.0f;
m_magsqPeak = 0.0f;
m_magsqCount = 0;
}
void applyChannelSettings(int channelSampleRate, int channelFrequencyOffset, bool force = false);
void applySettings(const NFMDemodSettings& settings, bool force = false);
void setMessageQueueToGUI(MessageQueue *messageQueue) { m_messageQueueToGUI = messageQueue; }
AudioFifo *getAudioFifo() { return &m_audioFifo; }
void setAudioFifoLabel(const QString& label) { m_audioFifo.setLabel(label); }
void applyAudioSampleRate(unsigned int sampleRate);
int getAudioSampleRate() const { return m_audioSampleRate; }
void setChannel(ChannelAPI *channel) { m_channel = channel; }
private:
struct MagSqLevelsStore
{
MagSqLevelsStore() :
m_magsq(1e-12),
m_magsqPeak(1e-12)
{}
double m_magsq;
double m_magsqPeak;
};
enum RateState {
RSInitialFill,
RSRunning
};
int m_channelSampleRate;
int m_channelFrequencyOffset;
NFMDemodSettings m_settings;
ChannelAPI *m_channel;
int m_audioSampleRate;
AudioVector m_audioBuffer;
std::size_t m_audioBufferFill;
AudioFifo m_audioFifo;
QVector<qint16> m_demodBuffer;
int m_demodBufferFill;
NCO m_nco;
Interpolator m_interpolator;
fftfilt m_rfFilter;
Real m_interpolatorDistance;
Real m_interpolatorDistanceRemain;
Lowpass<Real> m_ctcssLowpass;
Bandpass<Real> m_bandpass;
Lowpass<Real> m_lowpass;
CTCSSDetector m_ctcssDetector;
int m_ctcssIndex; // 0 for nothing detected
int m_ctcssIndexSelected;
DCSDetector m_dcsDetector;
unsigned int m_dcsCode;
unsigned int m_dcsCodeSeleted;
int m_sampleCount;
int m_squelchCount;
int m_squelchGate;
int m_filterTaps;
Real m_squelchLevel;
bool m_squelchOpen;
bool m_afSquelchOpen;
double m_magsq; //!< displayed averaged value
double m_magsqSum;
double m_magsqPeak;
int m_magsqCount;
MagSqLevelsStore m_magSqLevelStore;
MovingAverageUtil<Real, double, 32> m_movingAverage;
AFSquelch m_afSquelch;
DoubleBufferFIFO<Real> m_squelchDelayLine;
PhaseDiscriminators m_phaseDiscri;
MessageQueue *m_messageQueueToGUI;
static const double afSqTones[];
static const double afSqTones_lowrate[];
static const unsigned FFT_FILTER_LENGTH;
static const unsigned CTCSS_DETECTOR_RATE;
void setSelectedCtcssIndex(int selectedCtcssIndex) {
m_ctcssIndexSelected = selectedCtcssIndex;
}
void setSelectedDcsCode(unsigned int dcsCode, bool dcsPositive) {
m_dcsCodeSeleted = dcsPositive ? dcsCode : DCSCodes::m_signFlip[dcsCode];
}
void processOneSample(Complex &ci);
MessageQueue *getMessageQueueToGUI() { return m_messageQueueToGUI; }
};
#endif // INCLUDE_NFMDEMODSINK_H