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FCD: added decimation and center frequency shift

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This commit is contained in:
f4exb
2019-01-05 00:31:16 +01:00
parent 050ae9d2e8
commit 65e7519cd1
19 changed files with 424 additions and 125 deletions
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plugins/samplesource/fcdpro/fcdprothread.cpp
+90 -15
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@@ -30,6 +30,8 @@ FCDProThread::FCDProThread(SampleSinkFifo* sampleFifo, AudioFifo *fcdFIFO, QObje
QThread(parent),
m_fcdFIFO(fcdFIFO),
m_running(false),
m_log2Decim(0),
m_fcPos(2),
m_convertBuffer(fcd_traits<Pro>::convBufSize), // nb samples
m_sampleFifo(sampleFifo)
{
@@ -65,6 +67,11 @@ void FCDProThread::setLog2Decimation(unsigned int log2_decim)
m_log2Decim = log2_decim;
}
void FCDProThread::setFcPos(int fcPos)
{
m_fcPos = fcPos;
}
void FCDProThread::run()
{
m_running = true;
@@ -85,22 +92,90 @@ void FCDProThread::work(unsigned int n_items)
uint32_t nbRead = m_fcdFIFO->read((unsigned char *) m_buf, n_items); // number of samples
SampleVector::iterator it = m_convertBuffer.begin();
switch (m_log2Decim)
if (m_log2Decim == 0)
{
case 0:
m_decimators.decimate1(&it, m_buf, 2*nbRead);
break;
case 1:
m_decimators.decimate2_cen(&it, m_buf, 2*nbRead);
break;
case 2:
m_decimators.decimate4_cen(&it, m_buf, 2*nbRead);
break;
case 3:
m_decimators.decimate8_cen(&it, m_buf, 2*nbRead);
break;
default:
break;
m_decimators.decimate1(&it, m_buf, 2*nbRead);
}
else
{
if (m_fcPos == 0) // Infradyne
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_inf(&it, m_buf, 2*nbRead);
break;
case 2:
m_decimators.decimate4_inf(&it, m_buf, 2*nbRead);
break;
case 3:
m_decimators.decimate8_inf(&it, m_buf, 2*nbRead);
break;
case 4:
m_decimators.decimate16_inf(&it, m_buf, 2*nbRead);
break;
case 5:
m_decimators.decimate32_inf(&it, m_buf, 2*nbRead);
break;
case 6:
m_decimators.decimate64_inf(&it, m_buf, 2*nbRead);
break;
default:
break;
}
}
else if (m_fcPos == 1) // Supradyne
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_sup(&it, m_buf, 2*nbRead);
break;
case 2:
m_decimators.decimate4_sup(&it, m_buf, 2*nbRead);
break;
case 3:
m_decimators.decimate8_sup(&it, m_buf, 2*nbRead);
break;
case 4:
m_decimators.decimate16_sup(&it, m_buf, 2*nbRead);
break;
case 5:
m_decimators.decimate32_sup(&it, m_buf, 2*nbRead);
break;
case 6:
m_decimators.decimate64_sup(&it, m_buf, 2*nbRead);
break;
default:
break;
}
}
else // Centered
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_cen(&it, m_buf, 2*nbRead);
break;
case 2:
m_decimators.decimate4_cen(&it, m_buf, 2*nbRead);
break;
case 3:
m_decimators.decimate8_cen(&it, m_buf, 2*nbRead);
break;
case 4:
m_decimators.decimate16_cen(&it, m_buf, 2*nbRead);
break;
case 5:
m_decimators.decimate32_cen(&it, m_buf, 2*nbRead);
break;
case 6:
m_decimators.decimate64_cen(&it, m_buf, 2*nbRead);
break;
default:
break;
}
}
}
m_sampleFifo->write(m_convertBuffer.begin(), it);