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sdrangel/plugins/channelrx/demodwfm/wfmdemod.h
2019-05-09 17:27:12 +02:00

240 lines
7.5 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// //
// 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_WFMDEMOD_H
#define INCLUDE_WFMDEMOD_H
#include <vector>
#include <QMutex>
#include <QNetworkRequest>
#include "dsp/basebandsamplesink.h"
#include "channel/channelapi.h"
#include "dsp/nco.h"
#include "dsp/interpolator.h"
#include "dsp/lowpass.h"
#include "util/movingaverage.h"
#include "dsp/fftfilt.h"
#include "dsp/phasediscri.h"
#include "audio/audiofifo.h"
#include "util/message.h"
#include "wfmdemodsettings.h"
#define rfFilterFftLength 1024
class QNetworkAccessManager;
class QNetworkReply;
class ThreadedBasebandSampleSink;
class DownChannelizer;
class DeviceAPI;
class WFMDemod : public BasebandSampleSink, public ChannelAPI {
Q_OBJECT
public:
class MsgConfigureWFMDemod : public Message {
MESSAGE_CLASS_DECLARATION
public:
const WFMDemodSettings& getSettings() const { return m_settings; }
bool getForce() const { return m_force; }
static MsgConfigureWFMDemod* create(const WFMDemodSettings& settings, bool force)
{
return new MsgConfigureWFMDemod(settings, force);
}
private:
WFMDemodSettings m_settings;
bool m_force;
MsgConfigureWFMDemod(const WFMDemodSettings& 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)
{ }
};
WFMDemod(DeviceAPI *deviceAPI);
virtual ~WFMDemod();
virtual void destroy() { delete this; }
virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool po);
virtual void start();
virtual void stop();
virtual bool handleMessage(const Message& cmd);
virtual void getIdentifier(QString& id) { id = objectName(); }
virtual void getTitle(QString& title) { title = m_settings.m_title; }
virtual qint64 getCenterFrequency() const { return m_settings.m_inputFrequencyOffset; }
virtual QByteArray serialize() const;
virtual bool deserialize(const QByteArray& data);
virtual int getNbSinkStreams() const { return 1; }
virtual int getNbSourceStreams() const { return 0; }
virtual qint64 getStreamCenterFrequency(int streamIndex, bool sinkElseSource) const
{
(void) streamIndex;
(void) sinkElseSource;
return m_settings.m_inputFrequencyOffset;
}
double getMagSq() const { return m_movingAverage.asDouble(); }
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;
}
virtual int webapiSettingsGet(
SWGSDRangel::SWGChannelSettings& response,
QString& errorMessage);
virtual int webapiSettingsPutPatch(
bool force,
const QStringList& channelSettingsKeys,
SWGSDRangel::SWGChannelSettings& response,
QString& errorMessage);
virtual int webapiReportGet(
SWGSDRangel::SWGChannelReport& response,
QString& errorMessage);
static int requiredBW(int rfBW)
{
if (rfBW <= 48000) {
return 48000;
} else {
return (3*rfBW)/2;
}
}
static const QString m_channelIdURI;
static const QString m_channelId;
private:
struct MagSqLevelsStore
{
MagSqLevelsStore() :
m_magsq(1e-12),
m_magsqPeak(1e-12)
{}
double m_magsq;
double m_magsqPeak;
};
enum RateState {
RSInitialFill,
RSRunning
};
DeviceAPI* m_deviceAPI;
ThreadedBasebandSampleSink* m_threadedChannelizer;
DownChannelizer* m_channelizer;
int m_inputSampleRate;
int m_inputFrequencyOffset;
WFMDemodSettings m_settings;
quint32 m_audioSampleRate;
NCO m_nco;
Interpolator m_interpolator; //!< Interpolator between sample rate sent from DSP engine and requested RF bandwidth (rational)
Real m_interpolatorDistance;
Real m_interpolatorDistanceRemain;
fftfilt* m_rfFilter;
Real m_squelchLevel;
int m_squelchState;
bool m_squelchOpen;
double m_magsq; //!< displayed averaged value
double m_magsqSum;
double m_magsqPeak;
int m_magsqCount;
MagSqLevelsStore m_magSqLevelStore;
MovingAverageUtil<Real, double, 16> m_movingAverage;
Real m_fmExcursion;
AudioVector m_audioBuffer;
uint m_audioBufferFill;
AudioFifo m_audioFifo;
SampleVector m_sampleBuffer;
QMutex m_settingsMutex;
PhaseDiscriminators m_phaseDiscri;
QNetworkAccessManager *m_networkManager;
QNetworkRequest m_networkRequest;
static const int m_udpBlockSize;
void applyAudioSampleRate(int sampleRate);
void applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force = false);
void applySettings(const WFMDemodSettings& settings, bool force = false);
void webapiFormatChannelSettings(SWGSDRangel::SWGChannelSettings& response, const WFMDemodSettings& settings);
void webapiFormatChannelReport(SWGSDRangel::SWGChannelReport& response);
void webapiReverseSendSettings(QList<QString>& channelSettingsKeys, const WFMDemodSettings& settings, bool force);
private slots:
void networkManagerFinished(QNetworkReply *reply);
};
#endif // INCLUDE_WFMDEMOD_H