#include <chanalyzer.h>

Inheritance diagram for ChannelAnalyzer:

Collaboration diagram for ChannelAnalyzer:

Classes
class	MsgConfigureChannelAnalyzer

class	MsgConfigureChannelizer

class	MsgReportChannelSampleRateChanged

Public Member Functions
	ChannelAnalyzer (DeviceAPI *deviceAPI)

virtual	~ChannelAnalyzer ()

virtual void	destroy ()

void	setSampleSink (BasebandSampleSink *sampleSink)

DownChannelizer *	getChannelizer ()

int	getInputSampleRate () const

int	getChannelSampleRate () const

int	getDecimation () const

double	getMagSq () const

double	getMagSqAvg () const

bool	isPllLocked () const

Real	getPllFrequency () const

Real	getPllDeltaPhase () const

Real	getPllPhase () const

virtual void	feed (const SampleVector::const_iterator &begin, const SampleVector::const_iterator &end, bool positiveOnly)

virtual void	start ()

virtual void	stop ()

virtual bool	handleMessage (const Message &cmd)
	Processing of a message. Returns true if message has actually been processed. More...

virtual void	getIdentifier (QString &id)

virtual void	getTitle (QString &title)

virtual qint64	getCenterFrequency () const
	Applies to a default stream. More...

virtual QByteArray	serialize () const

virtual bool	deserialize (const QByteArray &data)

virtual int	getNbSinkStreams () const

virtual int	getNbSourceStreams () const

virtual qint64	getStreamCenterFrequency (int streamIndex, bool sinkElseSource) const

Public Member Functions inherited from BasebandSampleSink
	BasebandSampleSink ()

virtual	~BasebandSampleSink ()

MessageQueue *	getInputMessageQueue ()
	Get the queue for asynchronous inbound communication. More...

virtual void	setMessageQueueToGUI (MessageQueue *queue)

MessageQueue *	getMessageQueueToGUI ()

Public Member Functions inherited from ChannelAPI
	ChannelAPI (const QString &name, StreamType streamType)

virtual	~ChannelAPI ()

virtual void	setName (const QString &name)

virtual const QString &	getName () const

virtual int	webapiSettingsGet (SWGSDRangel::SWGChannelSettings &response, QString &errorMessage)

virtual int	webapiSettingsPutPatch (bool force, const QStringList &channelSettingsKeys, SWGSDRangel::SWGChannelSettings &response, QString &errorMessage)

virtual int	webapiReportGet (SWGSDRangel::SWGChannelReport &response, QString &errorMessage)

int	getIndexInDeviceSet () const

void	setIndexInDeviceSet (int indexInDeviceSet)

int	getDeviceSetIndex () const

void	setDeviceSetIndex (int deviceSetIndex)

DeviceAPI *	getDeviceAPI ()

void	setDeviceAPI (DeviceAPI *deviceAPI)

uint64_t	getUID () const

StreamType	getStreamType () const

Static Public Attributes
static const QString	m_channelIdURI = "sdrangel.channel.chanalyzer"

static const QString	m_channelId = "ChannelAnalyzer"

Private Member Functions
void	applyChannelSettings (int inputSampleRate, int inputFrequencyOffset, bool force=false)

void	applySettings (const ChannelAnalyzerSettings &settings, bool force=false)

void	setFilters (int sampleRate, float bandwidth, float lowCutoff)

void	processOneSample (Complex &c, fftfilt::cmplx *sideband)

void	feedOneSample (const fftfilt::cmplx &s, const fftfilt::cmplx &pll)

Private Attributes
DeviceAPI *	m_deviceAPI

ThreadedBasebandSampleSink *	m_threadedChannelizer

DownChannelizer *	m_channelizer

ChannelAnalyzerSettings	m_settings

int	m_inputSampleRate

int	m_inputFrequencyOffset

int	m_undersampleCount

fftfilt::cmplx	m_sum

bool	m_usb

double	m_magsq

bool	m_useInterpolator

NCOF	m_nco

PhaseLockComplex	m_pll

FreqLockComplex	m_fll

Interpolator	m_interpolator

Real	m_interpolatorDistance

Real	m_interpolatorDistanceRemain

fftfilt *	SSBFilter

fftfilt *	DSBFilter

fftfilt *	RRCFilter

fftcorr *	m_corr

BasebandSampleSink *	m_sampleSink

SampleVector	m_sampleBuffer

MovingAverageUtil< double, double, 480 >	m_channelPowerAvg

QMutex	m_settingsMutex

Additional Inherited Members
Public Types inherited from ChannelAPI
enum	StreamType { StreamSingleSink, StreamSingleSource, StreamMIMO }
	< This is the same enum as in PluginInterface More...

Protected Slots inherited from BasebandSampleSink
void	handleInputMessages ()

Protected Attributes inherited from BasebandSampleSink
MessageQueue	m_inputMessageQueue
	Queue for asynchronous inbound communication. More...

MessageQueue *	m_guiMessageQueue
	Input message queue to the GUI. More...

Detailed Description

Definition at line 44 of file chanalyzer.h.

Constructor & Destructor Documentation

◆ ChannelAnalyzer()

ChannelAnalyzer::ChannelAnalyzer ( DeviceAPI * deviceAPI )

Definition at line 35 of file chanalyzer.cpp.

References DeviceAPI::addChannelSink(), DeviceAPI::addChannelSinkAPI(), applyChannelSettings(), applySettings(), PhaseLockComplex::computeCoefficients(), DSBFilter, ChannelAnalyzerSettings::m_bandwidth, m_channelId, m_channelizer, m_corr, m_deviceAPI, m_inputFrequencyOffset, m_inputSampleRate, m_interpolatorDistance, m_interpolatorDistanceRemain, ChannelAnalyzerSettings::m_lowCutoff, m_magsq, m_pll, m_settings, m_sum, m_threadedChannelizer, m_undersampleCount, m_usb, m_useInterpolator, RRCFilter, ssbFftLen, and SSBFilter.

Referenced by ChannelAnalyzer::MsgReportChannelSampleRateChanged::MsgReportChannelSampleRateChanged().

                                                      :
         ChannelAPI(m_channelIdURI, ChannelAPI::StreamSingleSink),
         m_deviceAPI(deviceAPI),
         m_sampleSink(0),
         m_settingsMutex(QMutex::Recursive)
 {
     setObjectName(m_channelId);
 
     m_undersampleCount = 0;
     m_sum = 0;
     m_usb = true;
     m_magsq = 0;
     m_useInterpolator = false;
     m_interpolatorDistance = 1.0f;
     m_interpolatorDistanceRemain = 0.0f;
     m_inputSampleRate = 48000;
     m_inputFrequencyOffset = 0;
     SSBFilter = new fftfilt(m_settings.m_lowCutoff / m_inputSampleRate, m_settings.m_bandwidth / m_inputSampleRate, ssbFftLen);
     DSBFilter = new fftfilt(m_settings.m_bandwidth / m_inputSampleRate, 2*ssbFftLen);
     RRCFilter = new fftfilt(m_settings.m_bandwidth / m_inputSampleRate, 2*ssbFftLen);
     m_corr = new fftcorr(8*ssbFftLen); // 8k for 4k effective samples
     m_pll.computeCoefficients(0.002f, 0.5f, 10.0f); // bandwidth, damping factor, loop gain
 
     applyChannelSettings(m_inputSampleRate, m_inputFrequencyOffset, true);
     applySettings(m_settings, true);
 
     m_channelizer = new DownChannelizer(this);
     m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
     m_deviceAPI->addChannelSink(m_threadedChannelizer);
     m_deviceAPI->addChannelSinkAPI(this);
 }

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◆ ~ChannelAnalyzer()

ChannelAnalyzer::~ChannelAnalyzer ( )

virtual

Definition at line 67 of file chanalyzer.cpp.

References DSBFilter, m_channelizer, m_deviceAPI, m_threadedChannelizer, DeviceAPI::removeChannelSink(), DeviceAPI::removeChannelSinkAPI(), RRCFilter, and SSBFilter.

Referenced by ChannelAnalyzer::MsgReportChannelSampleRateChanged::MsgReportChannelSampleRateChanged().

 {
     m_deviceAPI->removeChannelSinkAPI(this);
     m_deviceAPI->removeChannelSink(m_threadedChannelizer);
     delete m_threadedChannelizer;
     delete m_channelizer;
     delete SSBFilter;
     delete DSBFilter;
     delete RRCFilter;
 }

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Member Function Documentation

◆ applyChannelSettings()

void ChannelAnalyzer::applyChannelSettings	(	int	inputSampleRate,
		int	inputFrequencyOffset,
		bool	force = `false`
	)

private

Definition at line 236 of file chanalyzer.cpp.

References Interpolator::create(), ChannelAnalyzerSettings::m_bandwidth, ChannelAnalyzerSettings::m_downSample, ChannelAnalyzerSettings::m_downSampleRate, m_fll, m_inputFrequencyOffset, m_inputSampleRate, m_interpolator, m_interpolatorDistance, m_interpolatorDistanceRemain, ChannelAnalyzerSettings::m_lowCutoff, m_nco, m_pll, m_settings, m_settingsMutex, ChannelAnalyzerSettings::m_spanLog2, setFilters(), NCOF::setFreq(), FreqLockComplex::setSampleRate(), and PhaseLockComplex::setSampleRate().

Referenced by ChannelAnalyzer(), handleMessage(), and start().

 {
     qDebug() << "ChannelAnalyzer::applyChannelSettings:"
             << " inputSampleRate: " << inputSampleRate
             << " inputFrequencyOffset: " << inputFrequencyOffset;
 
     if ((m_inputFrequencyOffset != inputFrequencyOffset) ||
         (m_inputSampleRate != inputSampleRate) || force)
     {
         m_nco.setFreq(-inputFrequencyOffset, inputSampleRate);
     }
 
     if ((m_inputSampleRate != inputSampleRate) || force)
     {
         m_settingsMutex.lock();
 
         m_interpolator.create(16, inputSampleRate, inputSampleRate / 2.2f);
         m_interpolatorDistanceRemain = 0;
         m_interpolatorDistance = (Real) inputSampleRate / (Real) m_settings.m_downSampleRate;
 
         if (!m_settings.m_downSample)
         {
             setFilters(inputSampleRate, m_settings.m_bandwidth, m_settings.m_lowCutoff);
             m_pll.setSampleRate(inputSampleRate / (1<<m_settings.m_spanLog2));
             m_fll.setSampleRate(inputSampleRate / (1<<m_settings.m_spanLog2));
         }
 
         m_settingsMutex.unlock();
     }
 
     m_inputSampleRate = inputSampleRate;
     m_inputFrequencyOffset = inputFrequencyOffset;
 }

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◆ applySettings()

void ChannelAnalyzer::applySettings	(	const ChannelAnalyzerSettings &	settings,
		bool	force = `false`
	)

private

Definition at line 297 of file chanalyzer.cpp.

Referenced by ChannelAnalyzer(), and handleMessage().

 {
     qDebug() << "ChannelAnalyzer::applySettings:"
             << " m_downSample: " << settings.m_downSample
             << " m_downSampleRate: " << settings.m_downSampleRate
             << " m_rcc: " << settings.m_rrc
             << " m_rrcRolloff: " << settings.m_rrcRolloff / 100.0
             << " m_bandwidth: " << settings.m_bandwidth
             << " m_lowCutoff: " << settings.m_lowCutoff
             << " m_spanLog2: " << settings.m_spanLog2
             << " m_ssb: " << settings.m_ssb
             << " m_pll: " << settings.m_pll
             << " m_fll: " << settings.m_fll
             << " m_pllPskOrder: " << settings.m_pllPskOrder
             << " m_inputType: " << (int) settings.m_inputType;
 
     if ((settings.m_downSampleRate != m_settings.m_downSampleRate) || force)
     {
         m_settingsMutex.lock();
         m_interpolator.create(16, m_inputSampleRate, m_inputSampleRate / 2.2);
         m_interpolatorDistanceRemain = 0.0f;
         m_interpolatorDistance =  (Real) m_inputSampleRate / (Real) settings.m_downSampleRate;
         m_settingsMutex.unlock();
     }
 
     if ((settings.m_downSample != m_settings.m_downSample) || force)
     {
         int sampleRate = settings.m_downSample ? settings.m_downSampleRate : m_inputSampleRate;
 
         m_settingsMutex.lock();
         m_useInterpolator = settings.m_downSample;
         setFilters(sampleRate, settings.m_bandwidth, settings.m_lowCutoff);
         m_pll.setSampleRate(sampleRate / (1<<settings.m_spanLog2));
         m_fll.setSampleRate(sampleRate / (1<<settings.m_spanLog2));
         m_settingsMutex.unlock();
     }
 
     if ((settings.m_bandwidth != m_settings.m_bandwidth) ||
         (settings.m_lowCutoff != m_settings.m_lowCutoff)|| force)
     {
         m_settingsMutex.lock();
         setFilters(settings.m_downSample ? settings.m_downSampleRate : m_inputSampleRate, settings.m_bandwidth, settings.m_lowCutoff);
         m_settingsMutex.unlock();
     }
 
     if ((settings.m_rrcRolloff != m_settings.m_rrcRolloff) || force)
     {
         float sampleRate = settings.m_downSample ? (float) settings.m_downSampleRate : (float) m_inputSampleRate;
         m_settingsMutex.lock();
         RRCFilter->create_rrc_filter(settings.m_bandwidth / sampleRate, settings.m_rrcRolloff / 100.0);
         m_settingsMutex.unlock();
     }
 
     if ((settings.m_spanLog2 != m_settings.m_spanLog2) || force)
     {
         int sampleRate = (settings.m_downSample ? settings.m_downSampleRate : m_inputSampleRate) / (1<<m_settings.m_spanLog2);
         m_pll.setSampleRate(sampleRate);
         m_fll.setSampleRate(sampleRate);
     }
 
     if (settings.m_pll != m_settings.m_pll || force)
     {
         if (settings.m_pll)
         {
             m_pll.reset();
             m_fll.reset();
         }
     }
 
     if (settings.m_fll != m_settings.m_fll || force)
     {
         if (settings.m_fll) {
             m_fll.reset();
         }
     }
 
     if (settings.m_pllPskOrder != m_settings.m_pllPskOrder || force)
     {
         if (settings.m_pllPskOrder < 32) {
             m_pll.setPskOrder(settings.m_pllPskOrder);
         }
     }
 
     m_settings = settings;
 }

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◆ deserialize()

virtual bool ChannelAnalyzer::deserialize ( const QByteArray & data )

inlinevirtual

Implements ChannelAPI.

Definition at line 145 of file chanalyzer.h.

145 { (void) data; return false; }

◆ destroy()

virtual void ChannelAnalyzer::destroy ( )

inlinevirtual

Implements ChannelAPI.

Definition at line 111 of file chanalyzer.h.

111 { delete this; }

◆ feed()

void ChannelAnalyzer::feed	(	const SampleVector::const_iterator &	begin,
		const SampleVector::const_iterator &	end,
		bool	positiveOnly
	)

virtual

Implements BasebandSampleSink.

Definition at line 78 of file chanalyzer.cpp.

References Interpolator::decimate(), BasebandSampleSink::feed(), m_interpolator, m_interpolatorDistance, m_interpolatorDistanceRemain, m_nco, m_sampleBuffer, m_sampleSink, m_settings, m_settingsMutex, ChannelAnalyzerSettings::m_ssb, m_useInterpolator, NCOF::nextIQ(), and processOneSample().

Referenced by getPllPhase().

 {
     (void) positiveOnly;
     fftfilt::cmplx *sideband = 0;
     Complex ci;
 
     m_settingsMutex.lock();
 
     for(SampleVector::const_iterator it = begin; it < end; ++it)
     {
         Complex c(it->real(), it->imag());
         c *= m_nco.nextIQ();
 
         if (m_useInterpolator)
         {
             if (m_interpolator.decimate(&m_interpolatorDistanceRemain, c, &ci))
             {
                 processOneSample(ci, sideband);
                 m_interpolatorDistanceRemain += m_interpolatorDistance;
             }
         }
         else
         {
             processOneSample(c, sideband);
         }
     }
 
     if(m_sampleSink != 0)
     {
         m_sampleSink->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), m_settings.m_ssb); // m_ssb = positive only
     }
 
     m_sampleBuffer.clear();
 
     m_settingsMutex.unlock();
 }

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◆ feedOneSample()

void ChannelAnalyzer::feedOneSample	(	const fftfilt::cmplx &	s,
		const fftfilt::cmplx &	pll
	)

inlineprivate

Definition at line 197 of file chanalyzer.h.

References ChannelAnalyzerSettings::InputAutoCorr, ChannelAnalyzerSettings::InputPLL, ChannelAnalyzerSettings::InputSignal, ChannelAnalyzerSettings::m_inputType, ChannelAnalyzerSettings::m_ssb, fftcorr::run(), and SDR_RX_SCALEF.

Referenced by processOneSample().

     {
         switch (m_settings.m_inputType)
         {
             case ChannelAnalyzerSettings::InputPLL:
             {
                 if (m_settings.m_ssb & !m_usb) { // invert spectrum for LSB
                     m_sampleBuffer.push_back(Sample(pll.imag()*SDR_RX_SCALEF, pll.real()*SDR_RX_SCALEF));
                 } else {
                     m_sampleBuffer.push_back(Sample(pll.real()*SDR_RX_SCALEF, pll.imag()*SDR_RX_SCALEF));
                 }
             }
                 break;
             case ChannelAnalyzerSettings::InputAutoCorr:
             {
                 std::complex<float> a = m_corr->run(s/(SDR_RX_SCALEF/768.0f), 0);
 
                 if (m_settings.m_ssb & !m_usb) { // invert spectrum for LSB
                     m_sampleBuffer.push_back(Sample(a.imag(), a.real()));
                 } else {
                     m_sampleBuffer.push_back(Sample(a.real(), a.imag()));
                 }
             }
                 break;
             case ChannelAnalyzerSettings::InputSignal:
             default:
             {
                 if (m_settings.m_ssb & !m_usb) { // invert spectrum for LSB
                     m_sampleBuffer.push_back(Sample(s.imag(), s.real()));
                 } else {
                     m_sampleBuffer.push_back(Sample(s.real(), s.imag()));
                 }
             }
                 break;
         }
     }

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◆ getCenterFrequency()

virtual qint64 ChannelAnalyzer::getCenterFrequency ( ) const

inlinevirtual

Applies to a default stream.

Implements ChannelAPI.

Definition at line 142 of file chanalyzer.h.

References ChannelAnalyzerSettings::m_frequency, and ChannelAnalyzer::MsgConfigureChannelAnalyzer::m_settings.

142 { return m_settings.m_frequency; }

ChannelAnalyzerSettings::m_frequency

int m_frequency

Definition: chanalyzersettings.h:34

ChannelAnalyzer::m_settings

ChannelAnalyzerSettings m_settings

Definition: chanalyzer.h:164

◆ getChannelizer()

DownChannelizer* ChannelAnalyzer::getChannelizer ( )

inline

Definition at line 124 of file chanalyzer.h.

References m_channelizer.

Referenced by ChannelAnalyzerGUI::getRequestedChannelSampleRate().

124 { return m_channelizer; }

ChannelAnalyzer::m_channelizer

DownChannelizer * m_channelizer

Definition: chanalyzer.h:163

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◆ getChannelSampleRate()

int ChannelAnalyzer::getChannelSampleRate ( ) const

inline

Definition at line 126 of file chanalyzer.h.

References ChannelAnalyzerSettings::m_downSample, ChannelAnalyzerSettings::m_downSampleRate, m_inputSampleRate, and ChannelAnalyzer::MsgConfigureChannelAnalyzer::m_settings.

Referenced by ChannelAnalyzerGUI::tick().

126 { return m_settings.m_downSample ? m_settings.m_downSampleRate : m_inputSampleRate; }

ChannelAnalyzerSettings::m_downSample

bool m_downSample

Definition: chanalyzersettings.h:35

ChannelAnalyzerSettings::m_downSampleRate

quint32 m_downSampleRate

Definition: chanalyzersettings.h:36

ChannelAnalyzer::m_inputSampleRate

int m_inputSampleRate

Definition: chanalyzer.h:166

ChannelAnalyzer::m_settings

ChannelAnalyzerSettings m_settings

Definition: chanalyzer.h:164

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◆ getDecimation()

int ChannelAnalyzer::getDecimation ( ) const

inline

Definition at line 127 of file chanalyzer.h.

References ChannelAnalyzer::MsgConfigureChannelAnalyzer::m_settings, and ChannelAnalyzerSettings::m_spanLog2.

Referenced by ChannelAnalyzerGUI::tick().

127 { return 1<<m_settings.m_spanLog2; }

ChannelAnalyzer::m_settings

ChannelAnalyzerSettings m_settings

Definition: chanalyzer.h:164

ChannelAnalyzerSettings::m_spanLog2

int m_spanLog2

Definition: chanalyzersettings.h:39

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◆ getIdentifier()

virtual void ChannelAnalyzer::getIdentifier ( QString & id )

inlinevirtual

Implements ChannelAPI.

Definition at line 140 of file chanalyzer.h.

140 { id = objectName(); }

◆ getInputSampleRate()

int ChannelAnalyzer::getInputSampleRate ( ) const

inline

Definition at line 125 of file chanalyzer.h.

References m_inputSampleRate.

Referenced by ChannelAnalyzerGUI::displaySettings(), and ChannelAnalyzerGUI::handleMessage().

125 { return m_inputSampleRate; }

ChannelAnalyzer::m_inputSampleRate

int m_inputSampleRate

Definition: chanalyzer.h:166

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◆ getMagSq()

double ChannelAnalyzer::getMagSq ( ) const

inline

Definition at line 128 of file chanalyzer.h.

References m_magsq.

128 { return m_magsq; }

ChannelAnalyzer::m_magsq

double m_magsq

Definition: chanalyzer.h:171

◆ getMagSqAvg()

double ChannelAnalyzer::getMagSqAvg ( ) const

inline

Definition at line 129 of file chanalyzer.h.

References m_channelPowerAvg.

Referenced by ChannelAnalyzerGUI::tick().

129 { return (double) m_channelPowerAvg; }

ChannelAnalyzer::m_channelPowerAvg

MovingAverageUtil< double, double, 480 > m_channelPowerAvg

Definition: chanalyzer.h:188

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◆ getNbSinkStreams()

virtual int ChannelAnalyzer::getNbSinkStreams ( ) const

inlinevirtual

Implements ChannelAPI.

Definition at line 147 of file chanalyzer.h.

147 { return 1; }

◆ getNbSourceStreams()

virtual int ChannelAnalyzer::getNbSourceStreams ( ) const

inlinevirtual

Implements ChannelAPI.

Definition at line 148 of file chanalyzer.h.

148 { return 0; }

◆ getPllDeltaPhase()

Real ChannelAnalyzer::getPllDeltaPhase ( ) const

inline

Definition at line 132 of file chanalyzer.h.

References PhaseLockComplex::getDeltaPhi(), and m_pll.

132 { return m_pll.getDeltaPhi(); }

PhaseLockComplex::getDeltaPhi

float getDeltaPhi() const

Definition: phaselockcomplex.h:55

ChannelAnalyzer::m_pll

PhaseLockComplex m_pll

Definition: chanalyzer.h:175

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◆ getPllFrequency()

Real ChannelAnalyzer::getPllFrequency ( ) const

Definition at line 383 of file chanalyzer.cpp.

References FreqLockComplex::getFreq(), PhaseLockComplex::getFreq(), ChannelAnalyzerSettings::m_fll, m_fll, ChannelAnalyzerSettings::m_pll, m_pll, and m_settings.

Referenced by isPllLocked(), and ChannelAnalyzerGUI::tick().

 {
     if (m_settings.m_fll) {
         return m_fll.getFreq();
     } else if (m_settings.m_pll) {
         return m_pll.getFreq();
     } else {
         return 0.0;
     }
 }

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◆ getPllPhase()

Real ChannelAnalyzer::getPllPhase ( ) const

inline

Definition at line 133 of file chanalyzer.h.

References feed(), PhaseLockComplex::getPhiHat(), handleMessage(), m_pll, start(), and stop().

133 { return m_pll.getPhiHat(); }

PhaseLockComplex::getPhiHat

float getPhiHat() const

Definition: phaselockcomplex.h:56

ChannelAnalyzer::m_pll

PhaseLockComplex m_pll

Definition: chanalyzer.h:175

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◆ getStreamCenterFrequency()

virtual qint64 ChannelAnalyzer::getStreamCenterFrequency	(	int	streamIndex,
		bool	sinkElseSource
	)		const

inlinevirtual

Implements ChannelAPI.

Definition at line 150 of file chanalyzer.h.

References ChannelAnalyzerSettings::m_frequency, and ChannelAnalyzer::MsgConfigureChannelAnalyzer::m_settings.

     {
         (void) streamIndex;
         (void) sinkElseSource;
         return m_settings.m_frequency;
     }

◆ getTitle()

virtual void ChannelAnalyzer::getTitle ( QString & title )

inlinevirtual

Implements ChannelAPI.

Definition at line 141 of file chanalyzer.h.

141 { title = objectName(); }

◆ handleMessage()

bool ChannelAnalyzer::handleMessage ( const Message & cmd )

virtual

Processing of a message. Returns true if message has actually been processed.

Implements BasebandSampleSink.

Definition at line 180 of file chanalyzer.cpp.

References applyChannelSettings(), applySettings(), DownChannelizer::configure(), ChannelAnalyzer::MsgReportChannelSampleRateChanged::create(), ChannelAnalyzer::MsgConfigureChannelizer::getCenterFrequency(), ChannelAnalyzer::MsgConfigureChannelAnalyzer::getForce(), DownChannelizer::MsgChannelizerNotification::getFrequencyOffset(), BasebandSampleSink::getInputMessageQueue(), BasebandSampleSink::getMessageQueueToGUI(), DownChannelizer::MsgChannelizerNotification::getSampleRate(), ChannelAnalyzer::MsgConfigureChannelizer::getSampleRate(), ChannelAnalyzer::MsgConfigureChannelAnalyzer::getSettings(), m_channelizer, Message::match(), and MessageQueue::push().

Referenced by getPllPhase().

 {
     if (DownChannelizer::MsgChannelizerNotification::match(cmd))
     {
         DownChannelizer::MsgChannelizerNotification& notif = (DownChannelizer::MsgChannelizerNotification&) cmd;
         qDebug() << "ChannelAnalyzer::handleMessage: DownChannelizer::MsgChannelizerNotification:"
                 << " sampleRate: " << notif.getSampleRate()
                 << " frequencyOffset: " << notif.getFrequencyOffset();
 
         applyChannelSettings(notif.getSampleRate(), notif.getFrequencyOffset());
 
         if (getMessageQueueToGUI())
         {
             MsgReportChannelSampleRateChanged *msg = MsgReportChannelSampleRateChanged::create();
             getMessageQueueToGUI()->push(msg);
         }
 
         return true;
     }
     else if (MsgConfigureChannelizer::match(cmd))
     {
         MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
         qDebug() << "ChannelAnalyzer::handleMessage: MsgConfigureChannelizer:"
                 << " sampleRate: " << cfg.getSampleRate()
                 << " centerFrequency: " << cfg.getCenterFrequency();
 
         m_channelizer->configure(m_channelizer->getInputMessageQueue(),
                 cfg.getSampleRate(),
                 cfg.getCenterFrequency());
 
         return true;
     }
     else if (MsgConfigureChannelAnalyzer::match(cmd))
     {
         qDebug("ChannelAnalyzer::handleMessage: MsgConfigureChannelAnalyzer");
         MsgConfigureChannelAnalyzer& cfg = (MsgConfigureChannelAnalyzer&) cmd;
 
         applySettings(cfg.getSettings(), cfg.getForce());
 
         return true;
     }
     else
     {
         // Processed through GUI
 //      if (m_sampleSink != 0)
 //      {
 //         return m_sampleSink->handleMessage(cmd);
 //      }
 //      else
 //      {
 //          return false;
 //      }
         return false;
     }
 }

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◆ isPllLocked()

bool ChannelAnalyzer::isPllLocked ( ) const

inline

Definition at line 130 of file chanalyzer.h.

References getPllFrequency(), PhaseLockComplex::locked(), ChannelAnalyzerSettings::m_pll, m_pll, and ChannelAnalyzer::MsgConfigureChannelAnalyzer::m_settings.

Referenced by ChannelAnalyzerGUI::tick().

130 { return m_settings.m_pll && m_pll.locked(); }

ChannelAnalyzerSettings::m_pll

bool m_pll

Definition: chanalyzersettings.h:41

ChannelAnalyzer::m_pll

PhaseLockComplex m_pll

Definition: chanalyzer.h:175

ChannelAnalyzer::m_settings

ChannelAnalyzerSettings m_settings

Definition: chanalyzer.h:164

PhaseLockComplex::locked

bool locked() const

Definition: phaselockcomplex.h:53

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◆ processOneSample()

void ChannelAnalyzer::processOneSample	(	Complex &	c,
		fftfilt::cmplx *	sideband
	)

private

Definition at line 115 of file chanalyzer.cpp.

References DSBFilter, FreqLockComplex::feed(), PhaseLockComplex::feed(), feedOneSample(), FreqLockComplex::getComplex(), PhaseLockComplex::getComplex(), i, m_channelPowerAvg, ChannelAnalyzerSettings::m_fll, m_fll, m_magsq, ChannelAnalyzerSettings::m_pll, m_pll, ChannelAnalyzerSettings::m_rrc, m_settings, ChannelAnalyzerSettings::m_spanLog2, ChannelAnalyzerSettings::m_ssb, m_sum, m_undersampleCount, m_usb, RRCFilter, fftfilt::runDSB(), fftfilt::runFilt(), fftfilt::runSSB(), SDR_RX_SCALEF, and SSBFilter.

Referenced by feed().

 {
     int n_out;
     int decim = 1<<m_settings.m_spanLog2;
 
     if (m_settings.m_ssb)
     {
         n_out = SSBFilter->runSSB(c, &sideband, m_usb);
     }
     else
     {
         if (m_settings.m_rrc) {
             n_out = RRCFilter->runFilt(c, &sideband);
         } else {
             n_out = DSBFilter->runDSB(c, &sideband);
         }
     }
 
     for (int i = 0; i < n_out; i++)
     {
         // Downsample by 2^(m_scaleLog2 - 1) for SSB band spectrum display
         // smart decimation with bit gain using float arithmetic (23 bits significand)
 
         m_sum += sideband[i];
 
         if (!(m_undersampleCount++ & (decim - 1))) // counter LSB bit mask for decimation by 2^(m_scaleLog2 - 1)
         {
             m_sum /= decim;
             Real re = m_sum.real() / SDR_RX_SCALEF;
             Real im = m_sum.imag() / SDR_RX_SCALEF;
             m_magsq = re*re + im*im;
             m_channelPowerAvg(m_magsq);
             std::complex<float> mix;
 
             if (m_settings.m_pll)
             {
                 if (m_settings.m_fll)
                 {
                     m_fll.feed(re, im);
                     // Use -fPLL to mix (exchange PLL real and image in the complex multiplication)
                     mix = m_sum * std::conj(m_fll.getComplex());
                 }
                 else
                 {
                     m_pll.feed(re, im);
                     // Use -fPLL to mix (exchange PLL real and image in the complex multiplication)
                     mix = m_sum * std::conj(m_pll.getComplex());
                 }
             }
 
             feedOneSample(m_settings.m_pll ? mix : m_sum, m_settings.m_fll ? m_fll.getComplex() : m_pll.getComplex());
             m_sum = 0;
         }
     }
 }

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◆ serialize()

virtual QByteArray ChannelAnalyzer::serialize ( ) const

inlinevirtual

Implements ChannelAPI.

Definition at line 144 of file chanalyzer.h.

144 { return QByteArray(); }

◆ setFilters()

void ChannelAnalyzer::setFilters	(	int	sampleRate,
		float	bandwidth,
		float	lowCutoff
	)

private

Definition at line 270 of file chanalyzer.cpp.

References fftfilt::create_dsb_filter(), fftfilt::create_filter(), fftfilt::create_rrc_filter(), DSBFilter, ChannelAnalyzerSettings::m_rrcRolloff, m_settings, m_usb, RRCFilter, and SSBFilter.

Referenced by applyChannelSettings(), and applySettings().

 {
     qDebug("ChannelAnalyzer::setFilters: sampleRate: %d bandwidth: %f lowCutoff: %f",
             sampleRate, bandwidth, lowCutoff);
 
     if (bandwidth < 0)
     {
         bandwidth = -bandwidth;
         lowCutoff = -lowCutoff;
         m_usb = false;
     }
     else
     {
         m_usb = true;
     }
 
     if (bandwidth < 100.0f)
     {
         bandwidth = 100.0f;
         lowCutoff = 0;
     }
 
     SSBFilter->create_filter(lowCutoff / sampleRate, bandwidth / sampleRate);
     DSBFilter->create_dsb_filter(bandwidth / sampleRate);
     RRCFilter->create_rrc_filter(bandwidth / sampleRate, m_settings.m_rrcRolloff / 100.0);
 }

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◆ setSampleSink()

void ChannelAnalyzer::setSampleSink ( BasebandSampleSink * sampleSink )

inline

Definition at line 112 of file chanalyzer.h.

References m_sampleSink.

Referenced by ChannelAnalyzerGUI::ChannelAnalyzerGUI().

112 { m_sampleSink = sampleSink; }

ChannelAnalyzer::m_sampleSink

BasebandSampleSink * m_sampleSink

Definition: chanalyzer.h:186

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◆ start()

void ChannelAnalyzer::start ( )

virtual

Implements BasebandSampleSink.

Definition at line 171 of file chanalyzer.cpp.

References applyChannelSettings(), m_inputFrequencyOffset, and m_inputSampleRate.

Referenced by getPllPhase().

 {
     applyChannelSettings(m_inputSampleRate, m_inputFrequencyOffset, true);
 }

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◆ stop()

void ChannelAnalyzer::stop ( )

virtual

Implements BasebandSampleSink.

Definition at line 176 of file chanalyzer.cpp.

Referenced by getPllPhase().

177 {

178 }

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Member Data Documentation

◆ DSBFilter

fftfilt* ChannelAnalyzer::DSBFilter

private

Definition at line 182 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), processOneSample(), setFilters(), and ~ChannelAnalyzer().

◆ m_channelId

const QString ChannelAnalyzer::m_channelId = "ChannelAnalyzer"

static

Definition at line 158 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), and ChannelAnalyzerPlugin::initPlugin().

◆ m_channelIdURI

const QString ChannelAnalyzer::m_channelIdURI = "sdrangel.channel.chanalyzer"

static

Definition at line 157 of file chanalyzer.h.

Referenced by ChannelAnalyzerGUI::ChannelAnalyzerGUI(), and ChannelAnalyzerPlugin::initPlugin().

◆ m_channelizer

DownChannelizer* ChannelAnalyzer::m_channelizer

private

Definition at line 163 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), getChannelizer(), handleMessage(), and ~ChannelAnalyzer().

◆ m_channelPowerAvg

MovingAverageUtil<double, double, 480> ChannelAnalyzer::m_channelPowerAvg

private

Definition at line 188 of file chanalyzer.h.

Referenced by getMagSqAvg(), and processOneSample().

◆ m_corr

fftcorr* ChannelAnalyzer::m_corr

private

Definition at line 184 of file chanalyzer.h.

Referenced by ChannelAnalyzer().

◆ m_deviceAPI

DeviceAPI* ChannelAnalyzer::m_deviceAPI

private

Definition at line 161 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), and ~ChannelAnalyzer().

◆ m_fll

FreqLockComplex ChannelAnalyzer::m_fll

private

Definition at line 176 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), getPllFrequency(), and processOneSample().

◆ m_inputFrequencyOffset

int ChannelAnalyzer::m_inputFrequencyOffset

private

Definition at line 167 of file chanalyzer.h.

Referenced by applyChannelSettings(), ChannelAnalyzer(), and start().

◆ m_inputSampleRate

int ChannelAnalyzer::m_inputSampleRate

private

Definition at line 166 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), ChannelAnalyzer(), getChannelSampleRate(), getInputSampleRate(), and start().

◆ m_interpolator

Interpolator ChannelAnalyzer::m_interpolator

private

Definition at line 177 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), and feed().

◆ m_interpolatorDistance

Real ChannelAnalyzer::m_interpolatorDistance

private

Definition at line 178 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), ChannelAnalyzer(), and feed().

◆ m_interpolatorDistanceRemain

Real ChannelAnalyzer::m_interpolatorDistanceRemain

private

Definition at line 179 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), ChannelAnalyzer(), and feed().

◆ m_magsq

double ChannelAnalyzer::m_magsq

private

Definition at line 171 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), getMagSq(), and processOneSample().

◆ m_nco

NCOF ChannelAnalyzer::m_nco

private

Definition at line 174 of file chanalyzer.h.

Referenced by applyChannelSettings(), and feed().

◆ m_pll

PhaseLockComplex ChannelAnalyzer::m_pll

private

Definition at line 175 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), ChannelAnalyzer(), getPllDeltaPhase(), getPllFrequency(), getPllPhase(), isPllLocked(), and processOneSample().

◆ m_sampleBuffer

SampleVector ChannelAnalyzer::m_sampleBuffer

private

Definition at line 187 of file chanalyzer.h.

Referenced by feed().

◆ m_sampleSink

BasebandSampleSink* ChannelAnalyzer::m_sampleSink

private

Definition at line 186 of file chanalyzer.h.

Referenced by feed(), and setSampleSink().

◆ m_settings

ChannelAnalyzerSettings ChannelAnalyzer::m_settings

private

Definition at line 164 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), ChannelAnalyzer(), feed(), getPllFrequency(), processOneSample(), and setFilters().

◆ m_settingsMutex

QMutex ChannelAnalyzer::m_settingsMutex

private

Definition at line 189 of file chanalyzer.h.

Referenced by applyChannelSettings(), applySettings(), and feed().

◆ m_sum

fftfilt::cmplx ChannelAnalyzer::m_sum

private

Definition at line 169 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), and processOneSample().

◆ m_threadedChannelizer

ThreadedBasebandSampleSink* ChannelAnalyzer::m_threadedChannelizer

private

Definition at line 162 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), and ~ChannelAnalyzer().

◆ m_undersampleCount

int ChannelAnalyzer::m_undersampleCount

private

Definition at line 168 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), and processOneSample().

◆ m_usb

bool ChannelAnalyzer::m_usb

private

Definition at line 170 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), processOneSample(), and setFilters().

◆ m_useInterpolator

bool ChannelAnalyzer::m_useInterpolator

private

Definition at line 172 of file chanalyzer.h.

Referenced by applySettings(), ChannelAnalyzer(), and feed().

◆ RRCFilter

fftfilt* ChannelAnalyzer::RRCFilter

private

Definition at line 183 of file chanalyzer.h.

Referenced by applySettings(), ChannelAnalyzer(), processOneSample(), setFilters(), and ~ChannelAnalyzer().

◆ SSBFilter

fftfilt* ChannelAnalyzer::SSBFilter

private

Definition at line 181 of file chanalyzer.h.

Referenced by ChannelAnalyzer(), processOneSample(), setFilters(), and ~ChannelAnalyzer().

The documentation for this class was generated from the following files:

plugins/channelrx/chanalyzer/chanalyzer.h
plugins/channelrx/chanalyzer/chanalyzer.cpp

Classes

Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ChannelAnalyzer()

◆ ~ChannelAnalyzer()

Member Function Documentation

◆ applyChannelSettings()

◆ applySettings()

◆ deserialize()

◆ destroy()

◆ feed()

◆ feedOneSample()

◆ getCenterFrequency()

◆ getChannelizer()

◆ getChannelSampleRate()

◆ getDecimation()

◆ getIdentifier()

◆ getInputSampleRate()

◆ getMagSq()

◆ getMagSqAvg()

◆ getNbSinkStreams()

◆ getNbSourceStreams()

◆ getPllDeltaPhase()

◆ getPllFrequency()

◆ getPllPhase()

◆ getStreamCenterFrequency()

◆ getTitle()

◆ handleMessage()

◆ isPllLocked()

◆ processOneSample()

◆ serialize()

◆ setFilters()

◆ setSampleSink()

◆ start()

◆ stop()

Member Data Documentation

◆ DSBFilter

◆ m_channelId

◆ m_channelIdURI

◆ m_channelizer

◆ m_channelPowerAvg

◆ m_corr

◆ m_deviceAPI

◆ m_fll

◆ m_inputFrequencyOffset

◆ m_inputSampleRate

◆ m_interpolator

◆ m_interpolatorDistance

◆ m_interpolatorDistanceRemain

◆ m_magsq

◆ m_nco

◆ m_pll

◆ m_sampleBuffer

◆ m_sampleSink

◆ m_settings

◆ m_settingsMutex

◆ m_sum

◆ m_threadedChannelizer

◆ m_undersampleCount

◆ m_usb

◆ m_useInterpolator

◆ RRCFilter

◆ SSBFilter