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LoRa demod rework (2)

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This commit is contained in:
f4exb
2020-02-08 18:21:38 +01:00
parent 6028938108
commit 9e088dc601
15 changed files with 1074 additions and 396 deletions
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sdrgui/dsp/spectrumvis.cpp
+104
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@@ -81,6 +81,110 @@ void SpectrumVis::feedTriggered(const SampleVector::const_iterator& triggerPoint
}*/
}
void SpectrumVis::feed(const Complex *begin, unsigned int length)
{
if (m_glSpectrum == 0) {
return;
}
if (!m_mutex.tryLock(0)) { // prevent conflicts with configuration process
return;
}
Complex c;
Real v;
if (m_avgMode == AvgModeNone)
{
for (unsigned int i = 0; i < m_fftSize; i++)
{
if (i < length) {
c = begin[i];
} else {
c = Complex{0,0};
}
v = c.real() * c.real() + c.imag() * c.imag();
v = m_linear ? v/m_powFFTDiv : m_mult * log2f(v) + m_ofs;
m_powerSpectrum[i] = v;
}
// send new data to visualisation
m_glSpectrum->newSpectrum(m_powerSpectrum, m_fftSize);
}
else if (m_avgMode == AvgModeMovingAvg)
{
for (unsigned int i = 0; i < m_fftSize; i++)
{
if (i < length) {
c = begin[i];
} else {
c = Complex{0,0};
}
v = c.real() * c.real() + c.imag() * c.imag();
v = m_movingAverage.storeAndGetAvg(v, i);
v = m_linear ? v/m_powFFTDiv : m_mult * log2f(v) + m_ofs;
m_powerSpectrum[i] = v;
}
// send new data to visualisation
m_glSpectrum->newSpectrum(m_powerSpectrum, m_fftSize);
m_movingAverage.nextAverage();
}
else if (m_avgMode == AvgModeFixedAvg)
{
double avg;
for (unsigned int i = 0; i < m_fftSize; i++)
{
if (i < length) {
c = begin[i];
} else {
c = Complex{0,0};
}
v = c.real() * c.real() + c.imag() * c.imag();
if (m_fixedAverage.storeAndGetAvg(avg, v, i))
{ // result available
avg = m_linear ? avg/m_powFFTDiv : m_mult * log2f(avg) + m_ofs;
m_powerSpectrum[i] = avg;
}
}
if (m_fixedAverage.nextAverage()) { // result available
m_glSpectrum->newSpectrum(m_powerSpectrum, m_fftSize); // send new data to visualisation
}
}
else if (m_avgMode == AvgModeMax)
{
double max;
for (unsigned int i = 0; i < m_fftSize; i++)
{
if (i < length) {
c = begin[i];
} else {
c = Complex{0,0};
}
v = c.real() * c.real() + c.imag() * c.imag();
if (m_max.storeAndGetMax(max, v, i))
{ // result available
max = m_linear ? max/m_powFFTDiv : m_mult * log2f(max) + m_ofs;
m_powerSpectrum[i] = max;
}
}
if (m_max.nextMax()) { // result available
m_glSpectrum->newSpectrum(m_powerSpectrum, m_fftSize); // send new data to visualisation
}
}
m_mutex.unlock();
}
void SpectrumVis::feed(const SampleVector::const_iterator& cbegin, const SampleVector::const_iterator& end, bool positiveOnly)
{
// if no visualisation is set, send the samples to /dev/null