mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-08-21 21:46:33 -04:00
146 lines
5.0 KiB
C++
146 lines
5.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2019 Edouard Griffiths, F4EXB //
|
|
// Copyright (C) 2020 Jon Beniston, M7RCE //
|
|
// //
|
|
// 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_VORDEMODSCSINK_H
|
|
#define INCLUDE_VORDEMODSCSINK_H
|
|
|
|
#include "dsp/channelsamplesink.h"
|
|
#include "dsp/nco.h"
|
|
#include "dsp/interpolator.h"
|
|
#include "dsp/agc.h"
|
|
#include "dsp/firfilter.h"
|
|
#include "dsp/goertzel.h"
|
|
#include "audio/audiofifo.h"
|
|
#include "util/movingaverage.h"
|
|
#include "util/doublebufferfifo.h"
|
|
#include "util/messagequeue.h"
|
|
|
|
#include "vordemodsettings.h"
|
|
|
|
#include <vector>
|
|
|
|
class VORDemodSCSink : public ChannelSampleSink {
|
|
public:
|
|
VORDemodSCSink();
|
|
~VORDemodSCSink();
|
|
|
|
virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end);
|
|
|
|
void applyChannelSettings(int channelSampleRate, int channelFrequencyOffset, bool force = false);
|
|
void applySettings(const VORDemodSettings& settings, bool force = false);
|
|
void setMessageQueueToChannel(MessageQueue *messageQueue) { m_messageQueueToChannel = messageQueue; }
|
|
void applyAudioSampleRate(int sampleRate);
|
|
|
|
int getAudioSampleRate() const { return m_audioSampleRate; }
|
|
double getMagSq() const { return m_magsq; }
|
|
bool getSquelchOpen() const { return m_squelchOpen; }
|
|
AudioFifo *getAudioFifo() { return &m_audioFifo; }
|
|
void setAudioFifoLabel(const QString& label) { m_audioFifo.setLabel(label); }
|
|
|
|
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;
|
|
}
|
|
|
|
int m_channelFrequencyOffset;
|
|
|
|
private:
|
|
struct MagSqLevelsStore
|
|
{
|
|
MagSqLevelsStore() :
|
|
m_magsq(1e-12),
|
|
m_magsqPeak(1e-12)
|
|
{}
|
|
double m_magsq;
|
|
double m_magsqPeak;
|
|
};
|
|
|
|
VORDemodSettings m_settings;
|
|
int m_channelSampleRate;
|
|
int m_audioSampleRate;
|
|
|
|
NCO m_nco;
|
|
Interpolator m_interpolator;
|
|
Real m_interpolatorDistance;
|
|
Real m_interpolatorDistanceRemain;
|
|
|
|
Real m_squelchLevel;
|
|
uint32_t m_squelchCount;
|
|
bool m_squelchOpen;
|
|
DoubleBufferFIFO<Real> m_squelchDelayLine;
|
|
double m_magsq;
|
|
double m_magsqSum;
|
|
double m_magsqPeak;
|
|
int m_magsqCount;
|
|
MagSqLevelsStore m_magSqLevelStore;
|
|
|
|
MessageQueue *m_messageQueueToChannel;
|
|
MessageQueue *m_messageQueueToGUI;
|
|
|
|
MovingAverageUtil<Real, double, 16> m_movingAverage;
|
|
SimpleAGC<4800> m_volumeAGC;
|
|
Bandpass<Real> m_bandpass;
|
|
|
|
Interpolator m_audioInterpolator;
|
|
Real m_audioInterpolatorDistance;
|
|
Real m_audioInterpolatorDistanceRemain;
|
|
AudioVector m_audioBuffer;
|
|
AudioFifo m_audioFifo;
|
|
uint32_t m_audioBufferFill;
|
|
|
|
NCO m_ncoIdent;
|
|
NCO m_ncoRef;
|
|
Lowpass<Complex> m_lowpassRef;
|
|
Lowpass<Complex> m_lowpassIdent;
|
|
Complex m_refPrev;
|
|
MovingAverageUtilVar<Real, double> m_movingAverageIdent;
|
|
static const int m_identBins = 10;
|
|
Real m_identMins[m_identBins];
|
|
Real m_identMin;
|
|
Real m_identMaxs[m_identBins];
|
|
Real m_identNoise;
|
|
int m_binSampleCnt;
|
|
int m_binCnt;
|
|
int m_samplesPerDot7wpm;
|
|
int m_samplesPerDot10wpm;
|
|
int m_prevBit;
|
|
int m_bitTime;
|
|
QString m_ident;
|
|
Goertzel m_varGoertzel;
|
|
Goertzel m_refGoertzel;
|
|
|
|
void processOneSample(Complex &ci);
|
|
void processOneAudioSample(Complex &ci);
|
|
MessageQueue *getMessageQueueToChannel() { return m_messageQueueToChannel; }
|
|
};
|
|
|
|
#endif // INCLUDE_VORDEMODSCSINK_H
|