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sdrangel/plugins/channelrx/demodatv/atvdemod.h

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2017-02-23 02:18:56 -05:00
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017 F4HKW //
// for F4EXB / SDRAngel //
// //
// 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_ATVDEMOD_H
#define INCLUDE_ATVDEMOD_H
#include <dsp/basebandsamplesink.h>
#include <dsp/devicesamplesource.h>
#include <dsp/dspcommands.h>
#include <dsp/downchannelizer.h>
#include <QMutex>
#include <QElapsedTimer>
#include <vector>
#include "dsp/nco.h"
#include "dsp/interpolator.h"
#include "dsp/movingaverage.h"
#include "dsp/agc.h"
#include "audio/audiofifo.h"
#include "util/message.h"
#include "atvscreen.h"
enum ATVModulation { ATV_AM, ATV_FM1 , ATV_FM2 };
struct ATVConfig
{
int m_intMsps;
int m_intLineDurationUs;
int m_intTopDurationUs;
int m_intFramePerS;
int m_intPercentOfRowsToDisplay;
float m_fltVoltLevelSynchroTop;
float m_fltVoltLevelSynchroBlack;
ATVModulation m_enmModulation;
bool m_blnHSync;
bool m_blnVSync;
ATVConfig() :
m_intMsps(0),
m_intLineDurationUs(0),
m_intTopDurationUs(0),
m_intFramePerS(0),
m_intPercentOfRowsToDisplay(0),
m_fltVoltLevelSynchroTop(0),
m_fltVoltLevelSynchroBlack(0),
m_enmModulation(ATV_FM1),
m_blnHSync(false),
m_blnVSync(false)
{
}
};
class ATVDemod : public BasebandSampleSink
{
Q_OBJECT
public:
ATVDemod();
~ATVDemod();
void configure(MessageQueue* objMessageQueue, int intLineDurationUs, int intTopDurationUs, int intFramePerS, int intPercentOfRowsToDisplay, float fltVoltLevelSynchroTop, float fltVoltLevelSynchroBlack, ATVModulation enmModulation, bool blnHSync, bool blnVSync);
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);
bool SetATVScreen(ATVScreen *objScreen);
void InitATVParameters(int intMsps, int intLineDurationUs, int intTopDurationUs, int intFramePerS, int intPercentOfRowsToDisplay, float fltVoltLevelSynchroTop, float fltVoltLevelSynchroBlack, ATVModulation enmModulation, bool blnHSync, bool blnVSync);
int GetSampleRate();
private:
//*************** ATV PARAMETERS ***************
ATVScreen * m_objRegisteredATVScreen;
int m_intNumberSamplePerLine;
int m_intNumberSamplePerTop;
int m_intNumberOfLines;
bool m_blnInitialized;
int m_intNumberOfRowsToDisplay;
float m_fltLevelSynchroTop;
float m_fltLevelSynchroBlack;
ATVModulation m_enmModulation;
//*************** PROCESSING ***************
int m_intImageIndex;
int m_intRowsLimit;
int m_intSynchroPoints;
bool m_blnSynchroDetected;
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bool m_blnLineSynchronized;
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bool m_blnImageDetecting;
bool m_blnVerticalSynchroDetected;
float m_fltAmpLineAverage;
float m_fltEffMin;
float m_fltEffMax;
float m_fltAmpMin;
float m_fltAmpMax;
float m_fltAmpDelta;
float m_fltBufferI[6];
float m_fltBufferQ[6];
int m_intColIndex;
int m_intRowIndex;
//QElapsedTimer m_objTimer;
private:
class MsgConfigureATVDemod : public Message
{
MESSAGE_CLASS_DECLARATION
public:
static MsgConfigureATVDemod* create(int intLineDurationUs, int intTopDurationUs, int intFramePerS, int intPercentOfRowsToDisplay, float fltVoltLevelSynchroTop, float fltVoltLevelSynchroBlack, ATVModulation enmModulation, bool blnHSync, bool blnVSync)
{
return new MsgConfigureATVDemod(intLineDurationUs, intTopDurationUs, intFramePerS, intPercentOfRowsToDisplay, fltVoltLevelSynchroTop, fltVoltLevelSynchroBlack, enmModulation, blnHSync, blnVSync);
}
ATVConfig m_objMsgConfig;
private:
MsgConfigureATVDemod(int intLineDurationUs, int intTopDurationUs, int intFramePerS, int intPercentOfRowsToDisplay, float fltVoltLevelSynchroTop, float fltVoltLevelSynchroBlack, ATVModulation enmModulation, bool blnHSync, bool blnVSync) :
Message()
{
m_objMsgConfig.m_enmModulation = enmModulation;
m_objMsgConfig.m_fltVoltLevelSynchroBlack = fltVoltLevelSynchroBlack;
m_objMsgConfig.m_fltVoltLevelSynchroTop = fltVoltLevelSynchroTop;
m_objMsgConfig.m_intFramePerS = intFramePerS;
m_objMsgConfig.m_intLineDurationUs = intLineDurationUs;
m_objMsgConfig.m_intTopDurationUs = intTopDurationUs;
m_objMsgConfig.m_intPercentOfRowsToDisplay = intPercentOfRowsToDisplay;
m_objMsgConfig.m_blnHSync = blnHSync;
m_objMsgConfig.m_blnVSync = blnVSync;
}
};
ATVConfig m_objRunning;
QMutex m_objSettingsMutex;
void ApplySettings();
};
#endif // INCLUDE_ATVDEMOD_H