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Test source: added sawtooth pattern

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This commit is contained in:
f4exb
2018-10-24 00:10:12 +02:00
parent 2958e1adba
commit faf428ed3d
5 changed files with 50 additions and 5 deletions
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plugins/samplesource/testsource/testsourcethread.cpp
+32 -2
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@@ -267,7 +267,7 @@ void TestSourceThread::generate(quint32 chunksize)
m_buf[i++] = (int16_t) (im * (float) m_amplitudeBitsQ);
}
break;
case TestSourceSettings::ModulationPulse:
case TestSourceSettings::ModulationPattern0: // binary pattern
{
if (m_pulseSampleCount < m_pulseWidth) // sync pattern: 0
{
@@ -288,7 +288,7 @@ void TestSourceThread::generate(quint32 chunksize)
{
uint32_t patPulseSampleCount = m_pulseSampleCount - 3*m_pulseWidth;
uint32_t patPulseIndex = patPulseSampleCount / m_pulseWidth;
float patFigure = (m_pulsePatternCount & (1<<patPulseIndex)) != 0 ? 0.1 : 0.0; // make binary pattern -20dB vs sync pattern
float patFigure = (m_pulsePatternCount & (1<<patPulseIndex)) != 0 ? 0.3 : 0.0; // make binary pattern ~-10dB vs sync pattern
m_buf[i++] = (int16_t) (patFigure * (float) m_amplitudeBitsI) + m_amplitudeBitsDC;
m_buf[i++] = (int16_t) (patFigure * (float) m_phaseImbalance * m_amplitudeBitsQ);
}
@@ -309,6 +309,21 @@ void TestSourceThread::generate(quint32 chunksize)
}
}
break;
case TestSourceSettings::ModulationPattern1: // sawtooth pattern
{
Real re, im;
re = (float) (m_pulseWidth - m_pulseSampleCount) / (float) m_pulseWidth;
im = m_phaseImbalance*re;
m_buf[i++] = (int16_t) (re * (float) m_amplitudeBitsI) + m_amplitudeBitsDC;
m_buf[i++] = (int16_t) (im * (float) m_amplitudeBitsQ);
if (m_pulseSampleCount < m_pulseWidth - 1) {
m_pulseSampleCount++;
} else {
m_pulseSampleCount = 0;
}
}
break;
case TestSourceSettings::ModulationNone:
default:
{
@@ -389,3 +404,18 @@ void TestSourceThread::handleInputMessages()
}
}
}
void TestSourceThread::setPattern0()
{
m_pulseWidth = 150;
m_pulseSampleCount = 0;
m_pulsePatternCount = 0;
m_pulsePatternCycle = 8;
m_pulsePatternPlaces = 3;
}
void TestSourceThread::setPattern1()
{
m_pulseWidth = 1000;
m_pulseSampleCount = 0;
}