sdrangel/plugins/channelrx/udpsrc/udpsrc.h

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C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 F4EXB //
// written by Edouard Griffiths //
// //
// 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 //
// //
// 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_UDPSRC_H
#define INCLUDE_UDPSRC_H
#include <dsp/basebandsamplesink.h>
#include <QMutex>
#include <QHostAddress>
#include "dsp/nco.h"
#include "dsp/fftfilt.h"
#include "dsp/interpolator.h"
#include "dsp/phasediscri.h"
#include "dsp/movingaverage.h"
#include "dsp/agc.h"
#include "dsp/bandpass.h"
#include "util/udpsink.h"
#include "util/message.h"
#include "audio/audiofifo.h"
#include "udpsrcsettings.h"
class QUdpSocket;
class DeviceSourceAPI;
class ThreadedBasebandSampleSink;
class DownChannelizer;
class UDPSrc : public BasebandSampleSink {
Q_OBJECT
public:
class MsgConfigureUDPSrc : public Message {
MESSAGE_CLASS_DECLARATION
public:
const UDPSrcSettings& getSettings() const { return m_settings; }
bool getForce() const { return m_force; }
static MsgConfigureUDPSrc* create(const UDPSrcSettings& settings, bool force)
{
return new MsgConfigureUDPSrc(settings, force);
}
private:
UDPSrcSettings m_settings;
bool m_force;
MsgConfigureUDPSrc(const UDPSrcSettings& settings, bool force) :
Message(),
m_settings(settings),
m_force(force)
{
}
};
class MsgConfigureChannelizer : public Message {
MESSAGE_CLASS_DECLARATION
public:
int getSampleRate() const { return m_sampleRate; }
int getCenterFrequency() const { return m_centerFrequency; }
static MsgConfigureChannelizer* create(int sampleRate, int centerFrequency)
{
return new MsgConfigureChannelizer(sampleRate, centerFrequency);
}
private:
int m_sampleRate;
int m_centerFrequency;
MsgConfigureChannelizer(int sampleRate, int centerFrequency) :
Message(),
m_sampleRate(sampleRate),
m_centerFrequency(centerFrequency)
{ }
};
UDPSrc(DeviceSourceAPI *deviceAPI);
virtual ~UDPSrc();
void setSpectrum(BasebandSampleSink* spectrum) { m_spectrum = spectrum; }
void setSpectrum(MessageQueue* messageQueue, bool enabled);
double getMagSq() const { return m_magsq; }
double getInMagSq() const { return m_inMagsq; }
bool getSquelchOpen() const { return m_squelchOpen; }
virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly);
virtual void start();
virtual void stop();
virtual bool handleMessage(const Message& cmd);
static const int udpBlockSize = 512; // UDP block size in number of bytes
public slots:
void audioReadyRead();
protected:
class MsgUDPSrcSpectrum : public Message {
MESSAGE_CLASS_DECLARATION
public:
bool getEnabled() const { return m_enabled; }
static MsgUDPSrcSpectrum* create(bool enabled)
{
return new MsgUDPSrcSpectrum(enabled);
}
private:
bool m_enabled;
MsgUDPSrcSpectrum(bool enabled) :
Message(),
m_enabled(enabled)
{ }
};
UDPSrcSettings m_settings;
DeviceSourceAPI *m_deviceAPI;
ThreadedBasebandSampleSink* m_threadedChannelizer;
DownChannelizer* m_channelizer;
QUdpSocket *m_audioSocket;
double m_magsq;
double m_inMagsq;
MovingAverage<double> m_outMovingAverage;
MovingAverage<double> m_inMovingAverage;
MovingAverage<double> m_amMovingAverage;
Real m_scale;
Complex m_last, m_this;
NCO m_nco;
Interpolator m_interpolator;
Real m_sampleDistanceRemain;
fftfilt* UDPFilter;
SampleVector m_sampleBuffer;
UDPSink<Sample> *m_udpBuffer;
UDPSink<FixReal> *m_udpBufferMono;
AudioVector m_audioBuffer;
uint m_audioBufferFill;
AudioFifo m_audioFifo;
BasebandSampleSink* m_spectrum;
bool m_spectrumEnabled;
quint32 m_nextSSBId;
quint32 m_nextS16leId;
char *m_udpAudioBuf;
static const int m_udpAudioPayloadSize = 8192; //!< UDP audio samples buffer. No UDP block on Earth is larger than this
static const Real m_agcTarget;
PhaseDiscriminators m_phaseDiscri;
double m_squelch;
bool m_squelchOpen;
int m_squelchOpenCount;
int m_squelchCloseCount;
int m_squelchGate; //!< number of samples computed from given gate
int m_squelchRelease;
MagAGC m_agc;
Bandpass<double> m_bandpass;
QMutex m_settingsMutex;
void applySettings(const UDPSrcSettings& settings, bool force = false);
inline void calculateSquelch(double value)
{
if ((!m_settings.m_squelchEnabled) || (value > m_squelch))
{
if (m_squelchGate == 0)
{
m_squelchOpen = true;
}
else
{
if (m_squelchOpenCount < m_squelchGate)
{
m_squelchOpenCount++;
}
else
{
m_squelchCloseCount = m_squelchRelease;
m_squelchOpen = true;
}
}
}
else
{
if (m_squelchGate == 0)
{
m_squelchOpen = false;
}
else
{
if (m_squelchCloseCount > 0)
{
m_squelchCloseCount--;
}
else
{
m_squelchOpenCount = 0;
m_squelchOpen = false;
}
}
}
}
inline void initSquelch(bool open)
{
if (open)
{
m_squelchOpen = true;
m_squelchOpenCount = m_squelchGate;
m_squelchCloseCount = m_squelchRelease;
}
else
{
m_squelchOpen = false;
m_squelchOpenCount = 0;
m_squelchCloseCount = 0;
}
}
};
#endif // INCLUDE_UDPSRC_H