mirror of
https://github.com/f4exb/sdrangel.git
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282 lines
8.9 KiB
C++
282 lines
8.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015 F4EXB //
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// written by Edouard Griffiths //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_BFMDEMOD_H
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#define INCLUDE_BFMDEMOD_H
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#include <QMutex>
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#include <vector>
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#include "dsp/basebandsamplesink.h"
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#include "channel/channelsinkapi.h"
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#include "dsp/nco.h"
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#include "dsp/interpolator.h"
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#include "dsp/lowpass.h"
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#include "dsp/movingaverage.h"
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#include "dsp/fftfilt.h"
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#include "dsp/phaselock.h"
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#include "dsp/filterrc.h"
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#include "dsp/phasediscri.h"
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#include "audio/audiofifo.h"
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#include "util/message.h"
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#include "rdsparser.h"
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#include "rdsdecoder.h"
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#include "rdsdemod.h"
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#include "bfmdemodsettings.h"
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class DeviceSourceAPI;
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class ThreadedBasebandSampleSink;
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class DownChannelizer;
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namespace SWGSDRangel {
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class SWGRDSReport;
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}
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class BFMDemod : public BasebandSampleSink, public ChannelSinkAPI {
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public:
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class MsgConfigureBFMDemod : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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const BFMDemodSettings& getSettings() const { return m_settings; }
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bool getForce() const { return m_force; }
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static MsgConfigureBFMDemod* create(const BFMDemodSettings& settings, bool force)
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{
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return new MsgConfigureBFMDemod(settings, force);
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}
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private:
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BFMDemodSettings m_settings;
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bool m_force;
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MsgConfigureBFMDemod(const BFMDemodSettings& settings, bool force) :
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Message(),
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m_settings(settings),
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m_force(force)
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{ }
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};
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class MsgConfigureChannelizer : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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int getSampleRate() const { return m_sampleRate; }
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int getCenterFrequency() const { return m_centerFrequency; }
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static MsgConfigureChannelizer* create(int sampleRate, int centerFrequency)
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{
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return new MsgConfigureChannelizer(sampleRate, centerFrequency);
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}
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private:
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int m_sampleRate;
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int m_centerFrequency;
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MsgConfigureChannelizer(int sampleRate, int centerFrequency) :
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Message(),
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m_sampleRate(sampleRate),
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m_centerFrequency(centerFrequency)
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{ }
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};
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class MsgReportChannelSampleRateChanged : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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int getSampleRate() const { return m_sampleRate; }
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static MsgReportChannelSampleRateChanged* create(int sampleRate)
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{
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return new MsgReportChannelSampleRateChanged(sampleRate);
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}
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private:
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int m_sampleRate;
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MsgReportChannelSampleRateChanged(int sampleRate) :
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Message(),
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m_sampleRate(sampleRate)
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{ }
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};
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BFMDemod(DeviceSourceAPI *deviceAPI);
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virtual ~BFMDemod();
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virtual void destroy() { delete this; }
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void setSampleSink(BasebandSampleSink* sampleSink) { m_sampleSink = sampleSink; }
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int getSampleRate() const { return m_inputSampleRate; }
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virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool po);
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virtual void start();
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virtual void stop();
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virtual bool handleMessage(const Message& cmd);
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virtual void getIdentifier(QString& id) { id = objectName(); }
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virtual void getTitle(QString& title) { title = m_settings.m_title; }
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virtual qint64 getCenterFrequency() const { return m_settings.m_inputFrequencyOffset; }
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virtual QByteArray serialize() const;
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virtual bool deserialize(const QByteArray& data);
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double getMagSq() const { return m_magsq; }
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bool getPilotLock() const { return m_pilotPLL.locked(); }
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Real getPilotLevel() const { return m_pilotPLL.get_pilot_level(); }
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Real getDecoderQua() const { return m_rdsDecoder.m_qua; }
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bool getDecoderSynced() const { return m_rdsDecoder.synced(); }
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Real getDemodAcc() const { return m_rdsDemod.m_report.acc; }
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Real getDemodQua() const { return m_rdsDemod.m_report.qua; }
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Real getDemodFclk() const { return m_rdsDemod.m_report.fclk; }
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void getMagSqLevels(double& avg, double& peak, int& nbSamples)
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{
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if (m_magsqCount > 0)
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{
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m_magsq = m_magsqSum / m_magsqCount;
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m_magSqLevelStore.m_magsq = m_magsq;
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m_magSqLevelStore.m_magsqPeak = m_magsqPeak;
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}
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avg = m_magSqLevelStore.m_magsq;
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peak = m_magSqLevelStore.m_magsqPeak;
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nbSamples = m_magsqCount == 0 ? 1 : m_magsqCount;
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m_magsqSum = 0.0f;
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m_magsqPeak = 0.0f;
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m_magsqCount = 0;
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}
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RDSParser& getRDSParser() { return m_rdsParser; }
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virtual int webapiSettingsGet(
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SWGSDRangel::SWGChannelSettings& response,
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QString& errorMessage);
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virtual int webapiSettingsPutPatch(
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bool force,
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const QStringList& channelSettingsKeys,
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SWGSDRangel::SWGChannelSettings& response,
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QString& errorMessage);
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virtual int webapiReportGet(
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SWGSDRangel::SWGChannelReport& response,
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QString& errorMessage);
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static int requiredBW(int rfBW)
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{
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if (rfBW <= 48000) {
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return 48000;
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} else {
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return (3*rfBW)/2;
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}
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}
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static const QString m_channelIdURI;
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static const QString m_channelId;
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private:
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struct MagSqLevelsStore
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{
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MagSqLevelsStore() :
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m_magsq(1e-12),
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m_magsqPeak(1e-12)
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{}
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double m_magsq;
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double m_magsqPeak;
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};
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enum RateState {
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RSInitialFill,
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RSRunning
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};
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DeviceSourceAPI *m_deviceAPI;
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ThreadedBasebandSampleSink* m_threadedChannelizer;
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DownChannelizer* m_channelizer;
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int m_inputSampleRate;
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int m_inputFrequencyOffset;
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BFMDemodSettings m_settings;
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quint32 m_audioSampleRate;
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NCO m_nco;
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Interpolator m_interpolator; //!< Interpolator between fixed demod bandwidth and audio bandwidth (rational)
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Real m_interpolatorDistance;
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Real m_interpolatorDistanceRemain;
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Interpolator m_interpolatorStereo; //!< Twin Interpolator for stereo subcarrier
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Real m_interpolatorStereoDistance;
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Real m_interpolatorStereoDistanceRemain;
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Interpolator m_interpolatorRDS; //!< Twin Interpolator for stereo subcarrier
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Real m_interpolatorRDSDistance;
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Real m_interpolatorRDSDistanceRemain;
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Lowpass<Real> m_lowpass;
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fftfilt* m_rfFilter;
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static const int filtFftLen = 1024;
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Real m_squelchLevel;
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int m_squelchState;
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Real m_m1Arg; //!> x^-1 real sample
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double m_magsq;
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double m_magsqSum;
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double m_magsqPeak;
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int m_magsqCount;
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MagSqLevelsStore m_magSqLevelStore;
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AudioVector m_audioBuffer;
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uint m_audioBufferFill;
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BasebandSampleSink* m_sampleSink;
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AudioFifo m_audioFifo;
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SampleVector m_sampleBuffer;
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QMutex m_settingsMutex;
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RDSPhaseLock m_pilotPLL;
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Real m_pilotPLLSamples[4];
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RDSDemod m_rdsDemod;
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RDSDecoder m_rdsDecoder;
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RDSParser m_rdsParser;
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LowPassFilterRC m_deemphasisFilterX;
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LowPassFilterRC m_deemphasisFilterY;
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static const Real default_deemphasis;
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Real m_fmExcursion;
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static const int default_excursion = 750000; // +/- 75 kHz
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PhaseDiscriminators m_phaseDiscri;
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static const int m_udpBlockSize;
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void applyAudioSampleRate(int sampleRate);
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void applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force = false);
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void applySettings(const BFMDemodSettings& settings, bool force = false);
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void webapiFormatChannelSettings(SWGSDRangel::SWGChannelSettings& response, const BFMDemodSettings& settings);
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void webapiFormatChannelReport(SWGSDRangel::SWGChannelReport& response);
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void webapiFormatRDSReport(SWGSDRangel::SWGRDSReport *report);
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};
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#endif // INCLUDE_BFMDEMOD_H
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