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sdrangel/plugins/channelrx/demodpacket/packetdemodsink.h
2024-04-20 19:10:18 +02:00

139 lines
4.4 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019-2021 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// Copyright (C) 2020-2021, 2023 Jon Beniston, M7RCE <jon@beniston.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_PACKETDEMODSINK_H
#define INCLUDE_PACKETDEMODSINK_H
#include <QVector>
#include "dsp/channelsamplesink.h"
#include "dsp/phasediscri.h"
#include "dsp/nco.h"
#include "dsp/interpolator.h"
#include "dsp/firfilter.h"
#include "util/movingaverage.h"
#include "util/messagequeue.h"
#include "util/crc.h"
#include "packetdemodsettings.h"
#include <vector>
#include <iostream>
#include <fstream>
class ChannelAPI;
class PacketDemod;
class PacketDemodSink : public ChannelSampleSink {
public:
PacketDemodSink(PacketDemod *packetDemod);
~PacketDemodSink();
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 PacketDemodSettings& settings, bool force = false);
void setMessageQueueToChannel(MessageQueue *messageQueue) { m_messageQueueToChannel = messageQueue; }
void setChannel(ChannelAPI *channel) { m_channel = channel; }
double getMagSq() const { return m_magsq; }
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;
}
private:
struct MagSqLevelsStore
{
MagSqLevelsStore() :
m_magsq(1e-12),
m_magsqPeak(1e-12)
{}
double m_magsq;
double m_magsqPeak;
};
PacketDemod *m_packetDemod;
PacketDemodSettings m_settings;
ChannelAPI *m_channel;
int m_channelSampleRate;
int m_channelFrequencyOffset;
NCO m_nco;
Interpolator m_interpolator;
Real m_interpolatorDistance;
Real m_interpolatorDistanceRemain;
double m_magsq;
double m_magsqSum;
double m_magsqPeak;
int m_magsqCount;
MagSqLevelsStore m_magSqLevelStore;
MessageQueue *m_messageQueueToChannel;
MovingAverageUtil<Real, double, 16> m_movingAverage;
PhaseDiscriminators m_phaseDiscri;
int m_correlationLength;
Complex *m_f1;
Complex *m_f0;
Complex *m_corrBuf;
int m_corrIdx;
int m_corrCnt;
Lowpass<Real> m_lowpassF1;
Lowpass<Real> m_lowpassF0;
int m_samplePrev;
int m_syncCount;
int m_symbolPrev;
unsigned char m_bits;
int m_bitCount;
int m_onesCount;
bool m_gotSOP;
unsigned char m_bytes[512]; // Info field can be 256 bytes
int m_byteCount;
crc16x25 m_crc;
QVector<qint16> m_demodBuffer;
int m_demodBufferFill;
void processOneSample(Complex &ci);
MessageQueue *getMessageQueueToChannel() { return m_messageQueueToChannel; }
};
#endif // INCLUDE_PACKETDEMODSINK_H