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sdrangel/plugins/channelrx/demodbfm/bfmdemod.h

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///////////////////////////////////////////////////////////////////////////////////
// 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 //
// (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_BFMDEMOD_H
#define INCLUDE_BFMDEMOD_H
#include <vector>
#include <QMutex>
#include <QNetworkRequest>
#include "dsp/basebandsamplesink.h"
#include "channel/channelsinkapi.h"
#include "dsp/nco.h"
#include "dsp/interpolator.h"
#include "dsp/lowpass.h"
#include "dsp/movingaverage.h"
#include "dsp/fftfilt.h"
#include "dsp/phaselock.h"
#include "dsp/filterrc.h"
#include "dsp/phasediscri.h"
#include "audio/audiofifo.h"
#include "util/message.h"
#include "rdsparser.h"
#include "rdsdecoder.h"
#include "rdsdemod.h"
#include "bfmdemodsettings.h"
class QNetworkAccessManager;
class QNetworkReply;
class DeviceSourceAPI;
class ThreadedBasebandSampleSink;
class DownChannelizer;
namespace SWGSDRangel {
class SWGRDSReport;
}
class BFMDemod : public BasebandSampleSink, public ChannelSinkAPI {
Q_OBJECT
public:
class MsgConfigureBFMDemod : public Message {
MESSAGE_CLASS_DECLARATION
public:
const BFMDemodSettings& getSettings() const { return m_settings; }
bool getForce() const { return m_force; }
static MsgConfigureBFMDemod* create(const BFMDemodSettings& settings, bool force)
{
return new MsgConfigureBFMDemod(settings, force);
}
private:
BFMDemodSettings m_settings;
bool m_force;
MsgConfigureBFMDemod(const BFMDemodSettings& 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)
{ }
};
class MsgReportChannelSampleRateChanged : public Message {
MESSAGE_CLASS_DECLARATION
public:
int getSampleRate() const { return m_sampleRate; }
static MsgReportChannelSampleRateChanged* create(int sampleRate)
{
return new MsgReportChannelSampleRateChanged(sampleRate);
}
private:
int m_sampleRate;
MsgReportChannelSampleRateChanged(int sampleRate) :
Message(),
m_sampleRate(sampleRate)
{ }
};
BFMDemod(DeviceSourceAPI *deviceAPI);
virtual ~BFMDemod();
virtual void destroy() { delete this; }
void setSampleSink(BasebandSampleSink* sampleSink) { m_sampleSink = sampleSink; }
int getSampleRate() const { return m_inputSampleRate; }
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);
double getMagSq() const { return m_magsq; }
bool getPilotLock() const { return m_pilotPLL.locked(); }
Real getPilotLevel() const { return m_pilotPLL.get_pilot_level(); }
Real getDecoderQua() const { return m_rdsDecoder.m_qua; }
bool getDecoderSynced() const { return m_rdsDecoder.synced(); }
Real getDemodAcc() const { return m_rdsDemod.m_report.acc; }
Real getDemodQua() const { return m_rdsDemod.m_report.qua; }
Real getDemodFclk() const { return m_rdsDemod.m_report.fclk; }
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;
}
RDSParser& getRDSParser() { return m_rdsParser; }
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
};
DeviceSourceAPI *m_deviceAPI;
ThreadedBasebandSampleSink* m_threadedChannelizer;
DownChannelizer* m_channelizer;
int m_inputSampleRate;
int m_inputFrequencyOffset;
BFMDemodSettings m_settings;
quint32 m_audioSampleRate;
NCO m_nco;
Interpolator m_interpolator; //!< Interpolator between fixed demod bandwidth and audio bandwidth (rational)
Real m_interpolatorDistance;
Real m_interpolatorDistanceRemain;
Interpolator m_interpolatorStereo; //!< Twin Interpolator for stereo subcarrier
Real m_interpolatorStereoDistance;
Real m_interpolatorStereoDistanceRemain;
Interpolator m_interpolatorRDS; //!< Twin Interpolator for stereo subcarrier
Real m_interpolatorRDSDistance;
Real m_interpolatorRDSDistanceRemain;
Lowpass<Real> m_lowpass;
fftfilt* m_rfFilter;
static const int filtFftLen = 1024;
Real m_squelchLevel;
int m_squelchState;
Real m_m1Arg; //!> x^-1 real sample
double m_magsq;
double m_magsqSum;
double m_magsqPeak;
int m_magsqCount;
MagSqLevelsStore m_magSqLevelStore;
AudioVector m_audioBuffer;
uint m_audioBufferFill;
BasebandSampleSink* m_sampleSink;
AudioFifo m_audioFifo;
SampleVector m_sampleBuffer;
QMutex m_settingsMutex;
RDSPhaseLock m_pilotPLL;
Real m_pilotPLLSamples[4];
RDSDemod m_rdsDemod;
RDSDecoder m_rdsDecoder;
RDSParser m_rdsParser;
LowPassFilterRC m_deemphasisFilterX;
LowPassFilterRC m_deemphasisFilterY;
static const Real default_deemphasis;
Real m_fmExcursion;
static const int default_excursion = 750000; // +/- 75 kHz
PhaseDiscriminators m_phaseDiscri;
static const int m_udpBlockSize;
QNetworkAccessManager *m_networkManager;
QNetworkRequest m_networkRequest;
void applyAudioSampleRate(int sampleRate);
void applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force = false);
void applySettings(const BFMDemodSettings& settings, bool force = false);
void webapiFormatChannelSettings(SWGSDRangel::SWGChannelSettings& response, const BFMDemodSettings& settings);
void webapiFormatChannelReport(SWGSDRangel::SWGChannelReport& response);
void webapiFormatRDSReport(SWGSDRangel::SWGRDSReport *report);
void webapiReverseSendSettings(QList<QString>& channelSettingsKeys, const BFMDemodSettings& settings, bool force);
private slots:
void networkManagerFinished(QNetworkReply *reply);
};
#endif // INCLUDE_BFMDEMOD_H
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