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sdrangel/plugins/channeltx/modssb/ssbmod.h

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 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 <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef PLUGINS_CHANNELTX_MODSSB_SSBMOD_H_
#define PLUGINS_CHANNELTX_MODSSB_SSBMOD_H_
#include <QMutex>
#include <vector>
#include <iostream>
#include <fstream>
#include "dsp/basebandsamplesource.h"
#include "dsp/basebandsamplesink.h"
#include "dsp/nco.h"
#include "dsp/interpolator.h"
#include "dsp/movingaverage.h"
#include "dsp/agc.h"
#include "dsp/fftfilt.h"
#include "dsp/cwkeyer.h"
#include "audio/audiofifo.h"
#include "util/message.h"
class SSBMod : public BasebandSampleSource {
Q_OBJECT
public:
typedef enum
{
SSBModInputNone,
SSBModInputTone,
SSBModInputFile,
SSBModInputAudio,
SSBModInputCWTone
} SSBModInputAF;
class MsgConfigureFileSourceName : public Message
{
MESSAGE_CLASS_DECLARATION
public:
const QString& getFileName() const { return m_fileName; }
static MsgConfigureFileSourceName* create(const QString& fileName)
{
return new MsgConfigureFileSourceName(fileName);
}
private:
QString m_fileName;
MsgConfigureFileSourceName(const QString& fileName) :
Message(),
m_fileName(fileName)
{ }
};
class MsgConfigureFileSourceSeek : public Message
{
MESSAGE_CLASS_DECLARATION
public:
int getPercentage() const { return m_seekPercentage; }
static MsgConfigureFileSourceSeek* create(int seekPercentage)
{
return new MsgConfigureFileSourceSeek(seekPercentage);
}
protected:
int m_seekPercentage; //!< percentage of seek position from the beginning 0..100
MsgConfigureFileSourceSeek(int seekPercentage) :
Message(),
m_seekPercentage(seekPercentage)
{ }
};
class MsgConfigureFileSourceStreamTiming : public Message {
MESSAGE_CLASS_DECLARATION
public:
static MsgConfigureFileSourceStreamTiming* create()
{
return new MsgConfigureFileSourceStreamTiming();
}
private:
MsgConfigureFileSourceStreamTiming() :
Message()
{ }
};
class MsgConfigureAFInput : public Message
{
MESSAGE_CLASS_DECLARATION
public:
SSBModInputAF getAFInput() const { return m_afInput; }
static MsgConfigureAFInput* create(SSBModInputAF afInput)
{
return new MsgConfigureAFInput(afInput);
}
private:
SSBModInputAF m_afInput;
MsgConfigureAFInput(SSBModInputAF afInput) :
Message(),
m_afInput(afInput)
{ }
};
class MsgReportFileSourceStreamTiming : public Message
{
MESSAGE_CLASS_DECLARATION
public:
std::size_t getSamplesCount() const { return m_samplesCount; }
static MsgReportFileSourceStreamTiming* create(std::size_t samplesCount)
{
return new MsgReportFileSourceStreamTiming(samplesCount);
}
protected:
std::size_t m_samplesCount;
MsgReportFileSourceStreamTiming(std::size_t samplesCount) :
Message(),
m_samplesCount(samplesCount)
{ }
};
class MsgReportFileSourceStreamData : public Message {
MESSAGE_CLASS_DECLARATION
public:
int getSampleRate() const { return m_sampleRate; }
quint32 getRecordLength() const { return m_recordLength; }
static MsgReportFileSourceStreamData* create(int sampleRate,
quint32 recordLength)
{
return new MsgReportFileSourceStreamData(sampleRate, recordLength);
}
protected:
int m_sampleRate;
quint32 m_recordLength;
MsgReportFileSourceStreamData(int sampleRate,
quint32 recordLength) :
Message(),
m_sampleRate(sampleRate),
m_recordLength(recordLength)
{ }
};
//=================================================================
SSBMod(BasebandSampleSink* sampleSink);
~SSBMod();
void configure(MessageQueue* messageQueue,
Real bandwidth,
Real lowCutoff,
float toneFrequency,
float volumeFactor,
int spanLog2,
bool audioBinaural,
bool audioFlipChannels,
bool dsb,
bool audioMute,
bool playLoop);
virtual void pull(Sample& sample);
virtual void start();
virtual void stop();
virtual bool handleMessage(const Message& cmd);
Real getMagSq() const { return m_magsq; }
CWKeyer *getCWKeyer() { return &m_cwKeyer; }
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 MsgConfigureSSBMod : public Message
{
MESSAGE_CLASS_DECLARATION
public:
Real getBandwidth() const { return m_bandwidth; }
Real getLowCutoff() const { return m_lowCutoff; }
float getToneFrequency() const { return m_toneFrequency; }
float getVolumeFactor() const { return m_volumeFactor; }
int getSpanLog2() const { return m_spanLog2; }
bool getAudioBinaural() const { return m_audioBinaural; }
bool getAudioFlipChannels() const { return m_audioFlipChannels; }
bool getDSB() const { return m_dsb; }
bool getAudioMute() const { return m_audioMute; }
bool getPlayLoop() const { return m_playLoop; }
static MsgConfigureSSBMod* create(Real bandwidth,
Real lowCutoff,
float toneFrequency,
float volumeFactor,
int spanLog2,
bool audioBinaural,
bool audioFlipChannels,
bool dsb,
bool audioMute,
bool playLoop)
{
return new MsgConfigureSSBMod(bandwidth,
lowCutoff,
toneFrequency,
volumeFactor,
spanLog2,
audioBinaural,
audioFlipChannels,
dsb,
audioMute,
playLoop);
}
private:
Real m_bandwidth;
Real m_lowCutoff;
float m_toneFrequency;
float m_volumeFactor;
int m_spanLog2;
bool m_audioBinaural;
bool m_audioFlipChannels;
bool m_dsb;
bool m_audioMute;
bool m_playLoop;
MsgConfigureSSBMod(Real bandwidth,
Real lowCutoff,
float toneFrequency,
float volumeFactor,
int spanLog2,
bool audioBinaural,
bool audioFlipChannels,
bool dsb,
bool audioMute,
bool playLoop) :
Message(),
m_bandwidth(bandwidth),
m_lowCutoff(lowCutoff),
m_toneFrequency(toneFrequency),
m_volumeFactor(volumeFactor),
m_spanLog2(spanLog2),
m_audioBinaural(audioBinaural),
m_audioFlipChannels(audioFlipChannels),
m_dsb(dsb),
m_audioMute(audioMute),
m_playLoop(playLoop)
{ }
};
//=================================================================
struct AudioSample {
qint16 l;
qint16 r;
};
typedef std::vector<AudioSample> AudioVector;
enum RateState {
RSInitialFill,
RSRunning
};
struct Config {
int m_outputSampleRate;
qint64 m_inputFrequencyOffset;
Real m_bandwidth;
Real m_lowCutoff;
bool m_usb;
float m_toneFrequency;
float m_volumeFactor;
quint32 m_audioSampleRate;
int m_spanLog2;
bool m_audioBinaural;
bool m_audioFlipChannels;
bool m_dsb;
bool m_audioMute;
bool m_playLoop;
Config() :
m_outputSampleRate(0),
m_inputFrequencyOffset(0),
m_bandwidth(3000.0f),
m_lowCutoff(300.0f),
m_usb(true),
m_toneFrequency(1000.0f),
m_volumeFactor(1.0f),
m_audioSampleRate(0),
m_spanLog2(3),
m_audioBinaural(false),
m_audioFlipChannels(false),
m_dsb(false),
m_audioMute(false),
m_playLoop(false)
{ }
};
//=================================================================
Config m_config;
Config m_running;
NCO m_carrierNco;
NCO m_toneNco;
Complex m_modSample;
Interpolator m_interpolator;
Real m_interpolatorDistance;
Real m_interpolatorDistanceRemain;
bool m_interpolatorConsumed;
fftfilt* m_SSBFilter;
fftfilt* m_DSBFilter;
Complex* m_SSBFilterBuffer;
Complex* m_DSBFilterBuffer;
int m_SSBFilterBufferIndex;
int m_DSBFilterBufferIndex;
static const int m_ssbFftLen;
BasebandSampleSink* m_sampleSink;
SampleVector m_sampleBuffer;
// Real m_magsqSpectrum;
// Real m_magsqSum;
// Real m_magsqPeak;
// int m_magsqCount;
fftfilt::cmplx m_sum;
int m_undersampleCount;
int m_sumCount;
Real m_magsq;
MovingAverage<Real> m_movingAverage;
SimpleAGC m_volumeAGC;
//AudioVector m_audioBuffer;
//uint m_audioBufferFill;
AudioFifo m_audioFifo;
QMutex m_settingsMutex;
std::ifstream m_ifstream;
QString m_fileName;
quint64 m_fileSize; //!< raw file size (bytes)
quint32 m_recordLength; //!< record length in seconds computed from file size
int m_sampleRate;
SSBModInputAF m_afInput;
quint32 m_levelCalcCount;
Real m_peakLevel;
Real m_levelSum;
CWKeyer m_cwKeyer;
CWSmoother m_cwSmoother;
static const int m_levelNbSamples;
void apply();
void pullAF(Complex& sample);
void calculateLevel(Complex& sample);
void modulateSample();
void openFileStream();
void seekFileStream(int seekPercentage);
};
#endif /* PLUGINS_CHANNELTX_MODSSB_SSBMOD_H_ */
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