///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017 Edouard Griffiths, F4EXB //
// //
// 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 . //
///////////////////////////////////////////////////////////////////////////////////
#ifndef PLUGINS_CHANNELTX_MODATV_ATVMOD_H_
#define PLUGINS_CHANNELTX_MODATV_ATVMOD_H_
#include
#include
#include
#include
#include
#include "dsp/basebandsamplesource.h"
#include "dsp/nco.h"
#include "dsp/interpolator.h"
#include "dsp/movingaverage.h"
#include "util/message.h"
class ATVMod : public BasebandSampleSource {
Q_OBJECT
public:
typedef enum
{
ATVStdPAL625,
ATVStdPAL525
} ATVStd;
typedef enum
{
ATVModInputUniform,
ATVModInputHBars,
ATVModInputVBars,
ATVModInputChessboard,
ATVModInputHGradient,
ATVModInputVGradient,
ATVModInputImage,
ATVModInputVideo
} ATVModInput;
typedef enum
{
ATVModulationAM,
ATVModulationFM
} ATVModulation;
class MsgConfigureImageFileName : public Message
{
MESSAGE_CLASS_DECLARATION
public:
const QString& getFileName() const { return m_fileName; }
static MsgConfigureImageFileName* create(const QString& fileName)
{
return new MsgConfigureImageFileName(fileName);
}
private:
QString m_fileName;
MsgConfigureImageFileName(const QString& fileName) :
Message(),
m_fileName(fileName)
{ }
};
class MsgConfigureVideoFileName : public Message
{
MESSAGE_CLASS_DECLARATION
public:
const QString& getFileName() const { return m_fileName; }
static MsgConfigureVideoFileName* create(const QString& fileName)
{
return new MsgConfigureVideoFileName(fileName);
}
private:
QString m_fileName;
MsgConfigureVideoFileName(const QString& fileName) :
Message(),
m_fileName(fileName)
{ }
};
class MsgConfigureVideoFileSourceSeek : public Message
{
MESSAGE_CLASS_DECLARATION
public:
int getPercentage() const { return m_seekPercentage; }
static MsgConfigureVideoFileSourceSeek* create(int seekPercentage)
{
return new MsgConfigureVideoFileSourceSeek(seekPercentage);
}
protected:
int m_seekPercentage; //!< percentage of seek position from the beginning 0..100
MsgConfigureVideoFileSourceSeek(int seekPercentage) :
Message(),
m_seekPercentage(seekPercentage)
{ }
};
class MsgConfigureVideoFileSourceStreamTiming : public Message {
MESSAGE_CLASS_DECLARATION
public:
static MsgConfigureVideoFileSourceStreamTiming* create()
{
return new MsgConfigureVideoFileSourceStreamTiming();
}
private:
MsgConfigureVideoFileSourceStreamTiming() :
Message()
{ }
};
class MsgReportVideoFileSourceStreamTiming : public Message
{
MESSAGE_CLASS_DECLARATION
public:
int getFrameCount() const { return m_frameCount; }
static MsgReportVideoFileSourceStreamTiming* create(int frameCount)
{
return new MsgReportVideoFileSourceStreamTiming(frameCount);
}
protected:
int m_frameCount;
MsgReportVideoFileSourceStreamTiming(int frameCount) :
Message(),
m_frameCount(frameCount)
{ }
};
class MsgReportVideoFileSourceStreamData : public Message {
MESSAGE_CLASS_DECLARATION
public:
int getFrameRate() const { return m_frameRate; }
quint32 getVideoLength() const { return m_videoLength; }
static MsgReportVideoFileSourceStreamData* create(int frameRate,
quint32 recordLength)
{
return new MsgReportVideoFileSourceStreamData(frameRate, recordLength);
}
protected:
int m_frameRate;
int m_videoLength; //!< Video length in frames
MsgReportVideoFileSourceStreamData(int frameRate,
int videoLength) :
Message(),
m_frameRate(frameRate),
m_videoLength(videoLength)
{ }
};
ATVMod();
~ATVMod();
void configure(MessageQueue* messageQueue,
Real rfBandwidth,
ATVStd atvStd,
ATVModInput atvModInput,
Real uniformLevel,
ATVModulation atvModulation,
bool channelMute);
virtual void pull(Sample& sample);
virtual void pullAudio(int nbSamples); // this is used for video signal actually
virtual void start();
virtual void stop();
virtual bool handleMessage(const Message& cmd);
Real getMagSq() const { return m_movingAverage.average(); }
static int getSampleRateUnits(ATVStd std);
signals:
/**
* Level changed
* \param rmsLevel RMS level in range 0.0 - 1.0
* \param peakLevel Peak level in range 0.0 - 1.0
* \param numSamples Number of audio samples analyzed
*/
void levelChanged(qreal rmsLevel, qreal peakLevel, int numSamples);
private:
class MsgConfigureATVMod : public Message
{
MESSAGE_CLASS_DECLARATION
public:
Real getRFBandwidth() const { return m_rfBandwidth; }
ATVStd getATVStd() const { return m_atvStd; }
ATVModInput getATVModInput() const { return m_atvModInput; }
Real getUniformLevel() const { return m_uniformLevel; }
ATVModulation getModulation() const { return m_atvModulation; }
static MsgConfigureATVMod* create(
Real rfBandwidth,
ATVStd atvStd,
ATVModInput atvModInput,
Real uniformLevel,
ATVModulation atvModulation)
{
return new MsgConfigureATVMod(rfBandwidth, atvStd, atvModInput, uniformLevel, atvModulation);
}
private:
Real m_rfBandwidth;
ATVStd m_atvStd;
ATVModInput m_atvModInput;
Real m_uniformLevel;
ATVModulation m_atvModulation;
MsgConfigureATVMod(
Real rfBandwidth,
ATVStd atvStd,
ATVModInput atvModInput,
Real uniformLevel,
ATVModulation atvModulation) :
Message(),
m_rfBandwidth(rfBandwidth),
m_atvStd(atvStd),
m_atvModInput(atvModInput),
m_uniformLevel(uniformLevel),
m_atvModulation(atvModulation)
{ }
};
struct Config
{
int m_outputSampleRate; //!< sample rate from channelizer
qint64 m_inputFrequencyOffset; //!< offset from baseband center frequency
Real m_rfBandwidth; //!< Bandwidth of modulated signal
ATVStd m_atvStd; //!< Standard
ATVModInput m_atvModInput; //!< Input source type
Real m_uniformLevel; //!< Percentage between black and white for uniform screen display
ATVModulation m_atvModulation; //!< RF modulation type
Config() :
m_outputSampleRate(-1),
m_inputFrequencyOffset(0),
m_rfBandwidth(0),
m_atvStd(ATVStdPAL625),
m_atvModInput(ATVModInputHBars),
m_uniformLevel(0.5f),
m_atvModulation(ATVModulationAM)
{ }
};
Config m_config;
Config m_running;
NCO m_carrierNco;
Complex m_modSample;
float m_modPhasor; //!< For FM modulation
Interpolator m_interpolator;
Real m_interpolatorDistance;
Real m_interpolatorDistanceRemain;
int m_tvSampleRate; //!< sample rate for generating signal
uint32_t m_pointsPerSync; //!< number of line points for the horizontal sync
uint32_t m_pointsPerBP; //!< number of line points for the back porch
uint32_t m_pointsPerImgLine; //!< number of line points for the image line
uint32_t m_pointsPerFP; //!< number of line points for the front porch
uint32_t m_pointsPerFSync; //!< number of line points for the field first sync
uint32_t m_pointsPerHBar; //!< number of line points for a bar of the bar chart
uint32_t m_linesPerVBar; //!< number of lines for a bar of the bar chart
uint32_t m_pointsPerTU; //!< number of line points per time unit
uint32_t m_nbLines; //!< number of lines per complete frame
uint32_t m_nbLines2; //!< same number as above (non interlaced) or half the number above (interlaced)
uint32_t m_nbImageLines; //!< number of image lines excluding synchronization lines
uint32_t m_nbImageLines2; //!< same number as above (non interlaced) or half the number above (interlaced)
uint32_t m_nbHorizPoints; //!< number of line points per horizontal line
uint32_t m_nbSyncLinesHead; //!< number of header sync lines
uint32_t m_nbBlankLines; //!< number of lines in a frame (full or half) that are blanked (black) at the top of the image
float m_hBarIncrement; //!< video level increment at each horizontal bar increment
float m_vBarIncrement; //!< video level increment at each vertical bar increment
bool m_interlaced; //!< true if image is interlaced (2 half frames per frame)
bool m_evenImage; //!< in interlaced mode true if this is an even image
QMutex m_settingsMutex;
int m_horizontalCount; //!< current point index on line
int m_lineCount; //!< current line index in frame
float m_fps; //!< resulting frames per second
MovingAverage m_movingAverage;
quint32 m_levelCalcCount;
Real m_peakLevel;
Real m_levelSum;
cv::Mat m_imageOriginal; //!< original non resized image
cv::Mat m_image; //!< resized image for transmission at given rate
bool m_imageOK;
cv::VideoCapture m_video; //!< current video capture
cv::Mat m_frameOriginal; //!< current frame from video
cv::Mat m_frame; //!< current displayable video frame
float m_videoFPS; //!< current video FPS rate
int m_videoWidth; //!< current video frame width
int m_videoHeight; //!< current video frame height
float m_videoFx; //!< current video horizontal scaling factor
float m_videoFy; //!< current video vertictal scaling factor
float m_videoFPSq; //!< current video FPS sacaling factor
float m_videoFPSCount; //!< current video FPS fractional counter
int m_videoPrevFPSCount; //!< current video FPS previous integer counter
int m_videoLength; //!< current video length in frames
bool m_videoOK;
static const float m_blackLevel;
static const float m_spanLevel;
static const int m_levelNbSamples;
static const int m_nbBars; // number of bars in bar or chessboard patterns
void apply(bool force = false);
void pullFinalize(Complex& ci, Sample& sample);
void pullVideo(Real& sample);
void calculateLevel(Real& sample);
void modulateSample();
void applyStandard();
void openImage(const QString& fileName);
void openVideo(const QString& fileName);
void resizeImage();
void calculateVideoSizes();
void resizeVideo();
void seekVideoFileStream(int seekPercentage);
inline void pullImageLine(Real& sample)
{
if (m_horizontalCount < m_pointsPerSync) // sync pulse
{
sample = 0.0f; // ultra-black
}
else if (m_horizontalCount < m_pointsPerSync + m_pointsPerBP) // back porch
{
sample = m_blackLevel; // black
}
else if (m_horizontalCount < m_pointsPerSync + m_pointsPerBP + m_pointsPerImgLine)
{
int pointIndex = m_horizontalCount - (m_pointsPerSync + m_pointsPerBP);
int iLine = m_lineCount % m_nbLines2;
int oddity = m_lineCount < m_nbLines2 ? 0 : 1;
int iLineImage = iLine - m_nbSyncLinesHead - m_nbBlankLines;
switch(m_running.m_atvModInput)
{
case ATVModInputHBars:
sample = (pointIndex / m_pointsPerHBar) * m_hBarIncrement + m_blackLevel;
break;
case ATVModInputVBars:
sample = (iLine / m_linesPerVBar) * m_vBarIncrement + m_blackLevel;
break;
case ATVModInputChessboard:
sample = (((iLine / m_linesPerVBar)*5 + (pointIndex / m_pointsPerHBar)) % 2) * m_spanLevel * m_running.m_uniformLevel + m_blackLevel;
break;
case ATVModInputHGradient:
sample = (pointIndex / (float) m_pointsPerImgLine) * m_spanLevel + m_blackLevel;
break;
case ATVModInputVGradient:
sample = ((iLine -5) / (float) m_nbImageLines2) * m_spanLevel + m_blackLevel;
break;
case ATVModInputImage:
if (!m_imageOK || (iLineImage < 0) || m_image.empty())
{
sample = m_spanLevel * m_running.m_uniformLevel + m_blackLevel;
}
else
{
unsigned char pixv;
if (m_interlaced) {
pixv = m_image.at(2*iLineImage + oddity, pointIndex); // row (y), col (x)
} else {
pixv = m_image.at(iLineImage, pointIndex); // row (y), col (x)
}
sample = (pixv / 256.0f) * m_spanLevel + m_blackLevel;
}
break;
case ATVModInputVideo:
if (!m_videoOK || (iLineImage < 0) || m_frame.empty())
{
sample = m_spanLevel * m_running.m_uniformLevel + m_blackLevel;
}
else
{
unsigned char pixv;
if (m_interlaced) {
pixv = m_frame.at(2*iLineImage + oddity, pointIndex); // row (y), col (x)
} else {
pixv = m_frame.at(iLineImage, pointIndex); // row (y), col (x)
}
sample = (pixv / 256.0f) * m_spanLevel + m_blackLevel;
}
break;
case ATVModInputUniform:
default:
sample = m_spanLevel * m_running.m_uniformLevel + m_blackLevel;
}
}
else // front porch
{
sample = m_blackLevel; // black
}
}
inline void pullVSyncLine(Real& sample)
{
int fieldLine = m_lineCount % m_nbLines2;
if (m_lineCount < m_nbLines2) // even
{
if (fieldLine < 2) // 0,1: Whole line "long" pulses
{
int halfIndex = m_horizontalCount % (m_nbHorizPoints/2);
if (halfIndex < (m_nbHorizPoints/2) - m_pointsPerSync) // ultra-black
{
sample = 0.0f;
}
else // black
{
sample = m_blackLevel;
}
}
else if (fieldLine == 2) // long pulse then equalizing pulse
{
if (m_horizontalCount < (m_nbHorizPoints/2) - m_pointsPerSync)
{
sample = 0.0f; // ultra-black
}
else if (m_horizontalCount < (m_nbHorizPoints/2))
{
sample = m_blackLevel; // black
}
else if (m_horizontalCount < (m_nbHorizPoints/2) + m_pointsPerFSync)
{
sample = 0.0f; // ultra-black
}
else
{
sample = m_blackLevel; // black
}
}
else if ((fieldLine < 5) || (fieldLine > m_nbLines2 - 3)) // Whole line equalizing pulses
{
int halfIndex = m_horizontalCount % (m_nbHorizPoints/2);
if (halfIndex < m_pointsPerFSync) // ultra-black
{
sample = 0.0f;
}
else // black
{
sample = m_blackLevel;
}
}
else // black images
{
if (m_horizontalCount < m_pointsPerSync)
{
sample = 0.0f;
}
else
{
sample = m_blackLevel;
}
}
}
else // odd
{
if (fieldLine < 1) // equalizing pulse then long pulse
{
if (m_horizontalCount < m_pointsPerFSync)
{
sample = 0.0f; // ultra-black
}
else if (m_horizontalCount < (m_nbHorizPoints/2))
{
sample = m_blackLevel; // black
}
else if (m_horizontalCount < m_nbHorizPoints - m_pointsPerSync)
{
sample = 0.0f; // ultra-black
}
else
{
sample = m_blackLevel; // black
}
}
else if (fieldLine < 3) // Whole line "long" pulses
{
int halfIndex = m_horizontalCount % (m_nbHorizPoints/2);
if (halfIndex < (m_nbHorizPoints/2) - m_pointsPerSync) // ultra-black
{
sample = 0.0f;
}
else // black
{
sample = m_blackLevel;
}
}
else if ((fieldLine < 5) || (fieldLine > m_nbLines2 - 5)) // Whole line equalizing pulses
{
int halfIndex = m_horizontalCount % (m_nbHorizPoints/2);
if (halfIndex < m_pointsPerFSync) // ultra-black
{
sample = 0.0f;
}
else // black
{
sample = m_blackLevel;
}
}
else // black images
{
if (m_horizontalCount < m_pointsPerSync)
{
sample = 0.0f;
}
else
{
sample = m_blackLevel;
}
}
}
}
};
#endif /* PLUGINS_CHANNELTX_MODATV_ATVMOD_H_ */