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Code Issues Projects Releases Wiki Activity

IQ swap: initial implementation in plugins

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This commit is contained in:
f4exb
2020-06-21 11:46:08 +02:00
parent 9508e8b88a
commit cc5d614f67
83 changed files with 4846 additions and 2835 deletions
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plugins/samplesource/limesdrinput/limesdrinputthread.cpp
+48 -10
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@@ -27,7 +27,8 @@ LimeSDRInputThread::LimeSDRInputThread(lms_stream_t* stream, SampleSinkFifo* sam
m_stream(stream),
m_convertBuffer(DeviceLimeSDR::blockSize),
m_sampleFifo(sampleFifo),
m_log2Decim(0)
m_log2Decim(0),
m_iqOrder(true)
{
std::fill(m_buf, m_buf + 2*DeviceLimeSDR::blockSize, 0);
}
@@ -94,39 +95,43 @@ void LimeSDRInputThread::run()
break;
}
callback(m_buf, 2 * res);
if (m_iqOrder) {
callbackIQ(m_buf, 2 * res);
} else {
callbackQI(m_buf, 2 * res);
}
}
m_running = false;
}
// Decimate according to specified log2 (ex: log2=4 => decim=16)
void LimeSDRInputThread::callback(const qint16* buf, qint32 len)
void LimeSDRInputThread::callbackIQ(const qint16* buf, qint32 len)
{
SampleVector::iterator it = m_convertBuffer.begin();
switch (m_log2Decim)
{
case 0:
m_decimators.decimate1(&it, buf, len);
m_decimatorsIQ.decimate1(&it, buf, len);
break;
case 1:
m_decimators.decimate2_cen(&it, buf, len);
m_decimatorsIQ.decimate2_cen(&it, buf, len);
break;
case 2:
m_decimators.decimate4_cen(&it, buf, len);
m_decimatorsIQ.decimate4_cen(&it, buf, len);
break;
case 3:
m_decimators.decimate8_cen(&it, buf, len);
m_decimatorsIQ.decimate8_cen(&it, buf, len);
break;
case 4:
m_decimators.decimate16_cen(&it, buf, len);
m_decimatorsIQ.decimate16_cen(&it, buf, len);
break;
case 5:
m_decimators.decimate32_cen(&it, buf, len);
m_decimatorsIQ.decimate32_cen(&it, buf, len);
break;
case 6:
m_decimators.decimate64_cen(&it, buf, len);
m_decimatorsIQ.decimate64_cen(&it, buf, len);
break;
default:
break;
@@ -135,3 +140,36 @@ void LimeSDRInputThread::callback(const qint16* buf, qint32 len)
m_sampleFifo->write(m_convertBuffer.begin(), it);
}
void LimeSDRInputThread::callbackQI(const qint16* buf, qint32 len)
{
SampleVector::iterator it = m_convertBuffer.begin();
switch (m_log2Decim)
{
case 0:
m_decimatorsQI.decimate1(&it, buf, len);
break;
case 1:
m_decimatorsQI.decimate2_cen(&it, buf, len);
break;
case 2:
m_decimatorsQI.decimate4_cen(&it, buf, len);
break;
case 3:
m_decimatorsQI.decimate8_cen(&it, buf, len);
break;
case 4:
m_decimatorsQI.decimate16_cen(&it, buf, len);
break;
case 5:
m_decimatorsQI.decimate32_cen(&it, buf, len);
break;
case 6:
m_decimatorsQI.decimate64_cen(&it, buf, len);
break;
default:
break;
}
m_sampleFifo->write(m_convertBuffer.begin(), it);
}