sdrangel/plugins/samplemimo/plutosdrmimo/plutosdrmithread.cpp

361 wiersze
11 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2021 Edouard Griffiths, F4EXB //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include "plutosdr/deviceplutosdrbox.h"
#include "dsp/samplemififo.h"
#include "plutosdrmimosettings.h"
#include "plutosdrmithread.h"
PlutoSDRMIThread::PlutoSDRMIThread(DevicePlutoSDRBox* plutoBox, QObject* parent) :
QThread(parent),
m_running(false),
m_plutoBox(plutoBox),
m_sampleFifo(nullptr),
m_iqOrder(true)
{
qDebug("PlutoSDRMIThread::PlutoSDRMIThread");
m_buf[0] = new qint16[2*m_plutoSDRBlockSizeSamples];
m_buf[1] = new qint16[2*m_plutoSDRBlockSizeSamples];
for (unsigned int i = 0; i < 2; i++) {
m_convertBuffer[i].resize(m_plutoSDRBlockSizeSamples, Sample{0,0});
}
}
PlutoSDRMIThread::~PlutoSDRMIThread()
{
qDebug("PlutoSDRMIThread::~PlutoSDRMIThread");
if (m_running) {
stopWork();
}
delete[] m_buf[0];
delete[] m_buf[1];
}
void PlutoSDRMIThread::startWork()
{
m_startWaitMutex.lock();
start();
while(!m_running) {
m_startWaiter.wait(&m_startWaitMutex, 100);
}
m_startWaitMutex.unlock();
}
void PlutoSDRMIThread::stopWork()
{
m_running = false;
wait();
}
void PlutoSDRMIThread::setLog2Decimation(unsigned int log2Decim)
{
m_log2Decim = log2Decim;
}
unsigned int PlutoSDRMIThread::getLog2Decimation() const
{
return m_log2Decim;
}
void PlutoSDRMIThread::setFcPos(int fcPos)
{
m_fcPos = fcPos;
}
int PlutoSDRMIThread::getFcPos() const
{
return m_fcPos;
}
void PlutoSDRMIThread::run()
{
std::ptrdiff_t p_inc = m_plutoBox->rxBufferStep();
int sampleSize = 2*m_plutoBox->getRxSampleBytes(); // I/Q sample size in bytes
int nbChan = p_inc / sampleSize; // number of I/Q channels
qDebug("PlutoSDRMOThread::run: nbChan: %d", nbChan);
qDebug("PlutoSDRMOThread::run: I+Q bytes %d", sampleSize);
qDebug("PlutoSDRMIThread::run: rxBufferStep: %ld bytes", p_inc);
qDebug("PlutoSDRMIThread::run: Rx all samples size is %ld bytes", m_plutoBox->getRxSampleSize());
qDebug("PlutoSDRMIThread::run: Tx all samples size is %ld bytes", m_plutoBox->getTxSampleSize());
qDebug("PlutoSDRMIThread::run: nominal nbytes_rx is %ld bytes with 1 refill", m_plutoSDRBlockSizeSamples*p_inc);
m_running = true;
m_startWaiter.wakeAll();
while (m_running)
{
ssize_t nbytes_rx;
char *p_dat, *p_end;
int ihs; // half sample index (I then Q to make a sample)
// Refill RX buffer
nbytes_rx = m_plutoBox->rxBufferRefill();
if (nbytes_rx != m_plutoSDRBlockSizeSamples*p_inc)
{
qWarning("PlutoSDRMIThread::run: error refilling buf %d / %ld", (int) nbytes_rx, (int) m_plutoSDRBlockSizeSamples*p_inc);
usleep(200000);
continue;
}
// READ: Get pointers to RX buf and read IQ from RX buf port 0
p_dat = m_plutoBox->rxBufferFirst();
p_end = m_plutoBox->rxBufferEnd();
ihs = 0;
// p_inc is 8 on a char* buffer therefore each iteration processes a couple of IQ samples,
// I and Q each being two bytes
// conversion is not needed as samples are little endian
for (; p_dat < p_end; p_dat += p_inc, ihs += 2)
{
m_buf[0][ihs] = *(((int16_t *) p_dat) + 0);
m_buf[0][ihs+1] = *(((int16_t *) p_dat) + 1);
if (nbChan == 1)
{
m_buf[1][ihs] = 0;
m_buf[1][ihs+1] = 0;
}
else if (nbChan == 2)
{
m_buf[1][ihs] = *(((int16_t *) p_dat) + 2);
m_buf[1][ihs+1] = *(((int16_t *) p_dat) + 3);
}
}
std::vector<SampleVector::const_iterator> vbegin;
int lengths[2];
for (unsigned int channel = 0; channel < 2; channel++)
{
if (m_iqOrder) {
lengths[channel] = channelCallbackIQ(m_buf[channel], 2*m_plutoSDRBlockSizeSamples, channel);
} else {
lengths[channel] = channelCallbackQI(m_buf[channel], 2*m_plutoSDRBlockSizeSamples, channel);
}
vbegin.push_back(m_convertBuffer[channel].begin());
}
if (lengths[0] == lengths[1])
{
m_sampleFifo->writeSync(vbegin, lengths[0]);
}
else
{
qWarning("PlutoSDRMIThread::run: unequal channel lengths: [0]=%d [1]=%d", lengths[0], lengths[1]);
m_sampleFifo->writeSync(vbegin, (std::min)(lengths[0], lengths[1]));
}
}
m_running = false;
}
int PlutoSDRMIThread::channelCallbackIQ(const qint16* buf, qint32 len, int channel)
{
SampleVector::iterator it = m_convertBuffer[channel].begin();
if (m_log2Decim == 0)
{
m_decimatorsIQ[channel].decimate1(&it, buf, len);
}
else
{
if (m_fcPos == 0) // Infra
{
switch (m_log2Decim)
{
case 1:
m_decimatorsIQ[channel].decimate2_inf(&it, buf, len);
break;
case 2:
m_decimatorsIQ[channel].decimate4_inf(&it, buf, len);
break;
case 3:
m_decimatorsIQ[channel].decimate8_inf(&it, buf, len);
break;
case 4:
m_decimatorsIQ[channel].decimate16_inf(&it, buf, len);
break;
case 5:
m_decimatorsIQ[channel].decimate32_inf(&it, buf, len);
break;
case 6:
m_decimatorsIQ[channel].decimate64_inf(&it, buf, len);
break;
default:
break;
}
}
else if (m_fcPos == 1) // Supra
{
switch (m_log2Decim)
{
case 1:
m_decimatorsIQ[channel].decimate2_sup(&it, buf, len);
break;
case 2:
m_decimatorsIQ[channel].decimate4_sup(&it, buf, len);
break;
case 3:
m_decimatorsIQ[channel].decimate8_sup(&it, buf, len);
break;
case 4:
m_decimatorsIQ[channel].decimate16_sup(&it, buf, len);
break;
case 5:
m_decimatorsIQ[channel].decimate32_sup(&it, buf, len);
break;
case 6:
m_decimatorsIQ[channel].decimate64_sup(&it, buf, len);
break;
default:
break;
}
}
else if (m_fcPos == 2) // Center
{
switch (m_log2Decim)
{
case 1:
m_decimatorsIQ[channel].decimate2_cen(&it, buf, len);
break;
case 2:
m_decimatorsIQ[channel].decimate4_cen(&it, buf, len);
break;
case 3:
m_decimatorsIQ[channel].decimate8_cen(&it, buf, len);
break;
case 4:
m_decimatorsIQ[channel].decimate16_cen(&it, buf, len);
break;
case 5:
m_decimatorsIQ[channel].decimate32_cen(&it, buf, len);
break;
case 6:
m_decimatorsIQ[channel].decimate64_cen(&it, buf, len);
break;
default:
break;
}
}
}
return it - m_convertBuffer[channel].begin();
}
int PlutoSDRMIThread::channelCallbackQI(const qint16* buf, qint32 len, int channel)
{
SampleVector::iterator it = m_convertBuffer[channel].begin();
if (m_log2Decim == 0)
{
m_decimatorsQI[channel].decimate1(&it, buf, len);
}
else
{
if (m_fcPos == 0) // Infra
{
switch (m_log2Decim)
{
case 1:
m_decimatorsQI[channel].decimate2_inf(&it, buf, len);
break;
case 2:
m_decimatorsQI[channel].decimate4_inf(&it, buf, len);
break;
case 3:
m_decimatorsQI[channel].decimate8_inf(&it, buf, len);
break;
case 4:
m_decimatorsQI[channel].decimate16_inf(&it, buf, len);
break;
case 5:
m_decimatorsQI[channel].decimate32_inf(&it, buf, len);
break;
case 6:
m_decimatorsQI[channel].decimate64_inf(&it, buf, len);
break;
default:
break;
}
}
else if (m_fcPos == 1) // Supra
{
switch (m_log2Decim)
{
case 1:
m_decimatorsQI[channel].decimate2_sup(&it, buf, len);
break;
case 2:
m_decimatorsQI[channel].decimate4_sup(&it, buf, len);
break;
case 3:
m_decimatorsQI[channel].decimate8_sup(&it, buf, len);
break;
case 4:
m_decimatorsQI[channel].decimate16_sup(&it, buf, len);
break;
case 5:
m_decimatorsQI[channel].decimate32_sup(&it, buf, len);
break;
case 6:
m_decimatorsQI[channel].decimate64_sup(&it, buf, len);
break;
default:
break;
}
}
else if (m_fcPos == 2) // Center
{
switch (m_log2Decim)
{
case 1:
m_decimatorsQI[channel].decimate2_cen(&it, buf, len);
break;
case 2:
m_decimatorsQI[channel].decimate4_cen(&it, buf, len);
break;
case 3:
m_decimatorsQI[channel].decimate8_cen(&it, buf, len);
break;
case 4:
m_decimatorsQI[channel].decimate16_cen(&it, buf, len);
break;
case 5:
m_decimatorsQI[channel].decimate32_cen(&it, buf, len);
break;
case 6:
m_decimatorsQI[channel].decimate64_cen(&it, buf, len);
break;
default:
break;
}
}
}
return it - m_convertBuffer[channel].begin();
}