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UDPSink plugin: implemented SSB mono

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This commit is contained in:
f4exb 2017-08-19 03:42:56 +02:00
parent 9ac435d491
commit 6771dde362
3 changed files with 61 additions and 1 deletions
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45
plugins/channeltx/udpsink/udpsink.cpp
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@ -46,15 +46,20 @@ UDPSink::UDPSink(MessageQueue* uiMessageQueue, UDPSinkGUI* udpSinkGUI, BasebandS
m_squelchCloseCount(0),
m_squelchThreshold(4800),
m_modPhasor(0.0f),
m_SSBFilterBufferIndex(0),
m_settingsMutex(QMutex::Recursive)
{
setObjectName("UDPSink");
m_udpHandler.setFeedbackMessageQueue(&m_inputMessageQueue);
m_SSBFilter = new fftfilt(m_config.m_lowCutoff / m_config.m_inputSampleRate, m_config.m_rfBandwidth / m_config.m_inputSampleRate, m_ssbFftLen);
m_SSBFilterBuffer = new Complex[m_ssbFftLen>>1]; // filter returns data exactly half of its size
apply(true);
}
UDPSink::~UDPSink()
{
delete[] m_SSBFilterBuffer;
delete m_SSBFilter;
}
void UDPSink::start()
@ -193,6 +198,45 @@ void UDPSink::modulateSample()
m_modSample.imag(0.0f);
}
}
else if ((m_running.m_sampleFormat == FormatLSBMono) || (m_running.m_sampleFormat == FormatUSBMono))
{
FixReal t;
Complex c, ci;
fftfilt::cmplx *filtered;
int n_out = 0;
m_udpHandler.readSample(t);
m_inMovingAverage.feed((t*t)/1073741824.0);
m_inMagsq = m_inMovingAverage.average();
calculateSquelch(m_inMagsq);
if (m_squelchOpen)
{
ci.real((t / 32768.0f) * m_running.m_gain);
ci.imag(0.0f);
n_out = m_SSBFilter->runSSB(ci, &filtered, (m_running.m_sampleFormat == FormatUSBMono));
if (n_out > 0)
{
memcpy((void *) m_SSBFilterBuffer, (const void *) filtered, n_out*sizeof(Complex));
m_SSBFilterBufferIndex = 0;
}
c = m_SSBFilterBuffer[m_SSBFilterBufferIndex];
m_modSample.real(m_SSBFilterBuffer[m_SSBFilterBufferIndex].real() * 32768.0f);
m_modSample.imag(m_SSBFilterBuffer[m_SSBFilterBufferIndex].imag() * 32768.0f);
m_SSBFilterBufferIndex++;
calculateLevel(m_modSample);
}
else
{
m_modSample.real(0.0f);
m_modSample.imag(0.0f);
}
}
else
{
m_modSample.real(0.0f);
@ -468,6 +512,7 @@ void UDPSink::apply(bool force)
m_inMovingAverage.resize(m_config.m_inputSampleRate * 0.01, 1e-10); // 10 ms
m_squelchThreshold = m_config.m_inputSampleRate * m_config.m_squelchGate;
initSquelch(m_squelchOpen);
m_SSBFilter->create_filter(m_config.m_lowCutoff / m_config.m_inputSampleRate, m_config.m_rfBandwidth / m_config.m_inputSampleRate);
m_settingsMutex.unlock();
}

9
plugins/channeltx/udpsink/udpsink.h
View File

@ -24,6 +24,7 @@
#include "dsp/interpolator.h"
#include "dsp/movingaverage.h"
#include "dsp/nco.h"
#include "dsp/fftfilt.h"
#include "util/message.h"
#include "udpsinkudphandler.h"
@ -223,6 +224,7 @@ private:
Real m_inputSampleRate;
qint64 m_inputFrequencyOffset;
Real m_rfBandwidth;
Real m_lowCutoff;
int m_fmDeviation;
Real m_amModFactor;
bool m_channelMute;
@ -241,6 +243,7 @@ private:
m_inputSampleRate(48000),
m_inputFrequencyOffset(0),
m_rfBandwidth(12500),
m_lowCutoff(300),
m_fmDeviation(1.0),
m_amModFactor(0.95),
m_channelMute(false),
@ -292,11 +295,15 @@ private:
int m_squelchCloseCount;
int m_squelchThreshold;
float m_modPhasor; //!< Phasor for FM modulation
float m_modPhasor; //!< Phasor for FM modulation
fftfilt* m_SSBFilter; //!< Complex filter for SSB modulation
Complex* m_SSBFilterBuffer;
int m_SSBFilterBufferIndex;
QMutex m_settingsMutex;
static const int m_sampleRateAverageItems = 17;
static const int m_ssbFftLen = 1024;
void apply(bool force);
void modulateSample();

8
plugins/channeltx/udpsink/udpsinkgui.cpp
View File

@ -416,6 +416,7 @@ void UDPSinkGUI::applySettings(bool force)
force);
ui->applyBtn->setEnabled(false);
ui->applyBtn->setStyleSheet("QPushButton { background:rgb(79,79,79); }");
}
}
@ -452,36 +453,43 @@ void UDPSinkGUI::on_sampleFormat_currentIndexChanged(int index)
}
ui->applyBtn->setEnabled(true);
ui->applyBtn->setStyleSheet("QPushButton { background-color : green; }");
}
void UDPSinkGUI::on_sampleRate_textEdited(const QString& arg1 __attribute__((unused)))
{
ui->applyBtn->setEnabled(true);
ui->applyBtn->setStyleSheet("QPushButton { background-color : green; }");
}
void UDPSinkGUI::on_rfBandwidth_textEdited(const QString& arg1 __attribute__((unused)))
{
ui->applyBtn->setEnabled(true);
ui->applyBtn->setStyleSheet("QPushButton { background-color : green; }");
}
void UDPSinkGUI::on_fmDeviation_textEdited(const QString& arg1 __attribute__((unused)))
{
ui->applyBtn->setEnabled(true);
ui->applyBtn->setStyleSheet("QPushButton { background-color : green; }");
}
void UDPSinkGUI::on_amModPercent_textEdited(const QString& arg1 __attribute__((unused)))
{
ui->applyBtn->setEnabled(true);
ui->applyBtn->setStyleSheet("QPushButton { background-color : green; }");
}
void UDPSinkGUI::on_udpAddress_textEdited(const QString& arg1 __attribute__((unused)))
{
ui->applyBtn->setEnabled(true);
ui->applyBtn->setStyleSheet("QPushButton { background-color : green; }");
}
void UDPSinkGUI::on_udpPort_textEdited(const QString& arg1 __attribute__((unused)))
{
ui->applyBtn->setEnabled(true);
ui->applyBtn->setStyleSheet("QPushButton { background-color : green; }");
}
void UDPSinkGUI::on_gain_valueChanged(int value)