mirror of
https://github.com/f4exb/sdrangel.git
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221 lines
6.9 KiB
C++
221 lines
6.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2017 F4HKW //
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// for F4EXB / SDRAngel //
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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_ATVDEMOD_H
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#define INCLUDE_ATVDEMOD_H
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#include <dsp/basebandsamplesink.h>
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#include <dsp/devicesamplesource.h>
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#include <dsp/dspcommands.h>
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#include <dsp/downchannelizer.h>
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#include <QMutex>
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#include <QElapsedTimer>
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#include <vector>
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#include "dsp/nco.h"
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#include "dsp/interpolator.h"
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#include "dsp/movingaverage.h"
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#include "dsp/agc.h"
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#include "audio/audiofifo.h"
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#include "util/message.h"
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#include "atvscreen.h"
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class ATVDemod : public BasebandSampleSink
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{
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Q_OBJECT
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public:
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enum ATVModulation {
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ATV_FM1,
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ATV_FM2,
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ATV_AM
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};
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struct ATVConfig
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{
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int m_intMsps;
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int m_intLineDurationUs;
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int m_intTopDurationUs;
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int m_intFramePerS;
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int m_intPercentOfRowsToDisplay;
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float m_fltVoltLevelSynchroTop;
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float m_fltVoltLevelSynchroBlack;
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ATVModulation m_enmModulation;
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bool m_blnHSync;
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bool m_blnVSync;
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ATVConfig() :
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m_intMsps(0),
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m_intLineDurationUs(0),
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m_intTopDurationUs(0),
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m_intFramePerS(0),
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m_intPercentOfRowsToDisplay(0),
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m_fltVoltLevelSynchroTop(0),
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m_fltVoltLevelSynchroBlack(0),
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m_enmModulation(ATV_FM1),
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m_blnHSync(false),
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m_blnVSync(false)
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{
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}
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};
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ATVDemod();
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~ATVDemod();
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void configure(MessageQueue* objMessageQueue,
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int intLineDurationUs,
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int intTopDurationUs,
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int intFramePerS,
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int intPercentOfRowsToDisplay,
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float fltVoltLevelSynchroTop,
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float fltVoltLevelSynchroBlack,
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ATVModulation enmModulation,
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bool blnHSync,
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bool blnVSync);
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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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bool SetATVScreen(ATVScreen *objScreen);
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void InitATVParameters(int intMsps,
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int intLineDurationUs,
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int intTopDurationUs,
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int intFramePerS,
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int intPercentOfRowsToDisplay,
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float fltVoltLevelSynchroTop,
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float fltVoltLevelSynchroBlack,
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ATVModulation enmModulation,
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bool blnHSync,
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bool blnVSync);
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int GetSampleRate();
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double getMagSq() const { return m_objMagSqAverage.average(); } //!< Beware this is scaled to 2^30
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private:
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//*************** ATV PARAMETERS ***************
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ATVScreen * m_objRegisteredATVScreen;
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int m_intNumberSamplePerLine;
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int m_intNumberSamplePerTop;
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int m_intNumberOfLines;
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bool m_blnInitialized;
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int m_intNumberOfRowsToDisplay;
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float m_fltLevelSynchroTop;
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float m_fltLevelSynchroBlack;
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ATVModulation m_enmModulation;
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//*************** PROCESSING ***************
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int m_intImageIndex;
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int m_intRowsLimit;
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int m_intSynchroPoints;
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bool m_blnSynchroDetected;
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bool m_blnLineSynchronized;
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bool m_blnImageDetecting;
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bool m_blnVerticalSynchroDetected;
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float m_fltAmpLineAverage;
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float m_fltEffMin;
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float m_fltEffMax;
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float m_fltAmpMin;
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float m_fltAmpMax;
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float m_fltAmpDelta;
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float m_fltBufferI[6];
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float m_fltBufferQ[6];
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int m_intColIndex;
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int m_intRowIndex;
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//*************** RF ***************
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MovingAverage<double> m_objMagSqAverage;
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//QElapsedTimer m_objTimer;
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private:
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class MsgConfigureATVDemod : public Message
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{
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MESSAGE_CLASS_DECLARATION
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public:
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static MsgConfigureATVDemod* create(int intLineDurationUs,
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int intTopDurationUs,
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int intFramePerS,
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int intPercentOfRowsToDisplay,
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float fltVoltLevelSynchroTop,
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float fltVoltLevelSynchroBlack,
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ATVModulation enmModulation,
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bool blnHSync,
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bool blnVSync)
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{
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return new MsgConfigureATVDemod(intLineDurationUs,
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intTopDurationUs,
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intFramePerS,
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intPercentOfRowsToDisplay,
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fltVoltLevelSynchroTop,
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fltVoltLevelSynchroBlack,
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enmModulation,
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blnHSync,
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blnVSync);
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}
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ATVConfig m_objMsgConfig;
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private:
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MsgConfigureATVDemod(int intLineDurationUs,
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int intTopDurationUs,
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int intFramePerS,
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int intPercentOfRowsToDisplay,
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float fltVoltLevelSynchroTop,
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float fltVoltLevelSynchroBlack,
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ATVModulation enmModulation,
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bool blnHSync,
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bool blnVSync) :
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Message()
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{
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m_objMsgConfig.m_enmModulation = enmModulation;
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m_objMsgConfig.m_fltVoltLevelSynchroBlack = fltVoltLevelSynchroBlack;
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m_objMsgConfig.m_fltVoltLevelSynchroTop = fltVoltLevelSynchroTop;
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m_objMsgConfig.m_intFramePerS = intFramePerS;
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m_objMsgConfig.m_intLineDurationUs = intLineDurationUs;
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m_objMsgConfig.m_intTopDurationUs = intTopDurationUs;
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m_objMsgConfig.m_intPercentOfRowsToDisplay = intPercentOfRowsToDisplay;
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m_objMsgConfig.m_blnHSync = blnHSync;
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m_objMsgConfig.m_blnVSync = blnVSync;
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}
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};
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ATVConfig m_objRunning;
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QMutex m_objSettingsMutex;
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void ApplySettings();
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};
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#endif // INCLUDE_ATVDEMOD_H
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