sdrangel/plugins/samplemimo/limesdrmimo/limesdrmithread.cpp

274 wiersze
7.6 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2020 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 "dsp/samplemififo.h"
#include "limesdrmithread.h"
LimeSDRMIThread::LimeSDRMIThread(lms_stream_t* stream0, lms_stream_t* stream1, QObject* parent) :
QThread(parent),
m_running(false),
m_stream0(stream0),
m_stream1(stream1),
m_sampleFifo(nullptr),
m_iqOrder(true)
{
qDebug("LimeSDRMIThread::LimeSDRMIThread");
for (unsigned int i = 0; i < 2; i++) {
m_convertBuffer[i].resize(DeviceLimeSDR::blockSize, Sample{0,0});
}
m_vBegin.push_back(m_convertBuffer[0].begin());
m_vBegin.push_back(m_convertBuffer[1].begin());
}
LimeSDRMIThread::~LimeSDRMIThread()
{
qDebug("LimeSDRMIThread::~LimeSDRMIThread");
if (m_running) {
stopWork();
}
}
void LimeSDRMIThread::startWork()
{
if (m_running) {
return; // return if running already
}
int ret[2];
ret[0] = LMS_StartStream(m_stream0);
ret[1] = LMS_StartStream(m_stream1);
if (ret[0] < 0)
{
qCritical("LimeSDRMIThread::startWork: could not start stream 0");
return;
}
else
{
qDebug("LimeSDRMIThread::startWork: stream 0 started");
}
if (m_stream1)
{
if (ret[1] < 0)
{
qCritical("LimeSDRMIThread::startWork: could not start stream 1");
return;
}
else
{
qDebug("LimeSDRMIThread::startWork: stream 0 started");
}
}
usleep(50000);
m_startWaitMutex.lock();
start();
while(!m_running) {
m_startWaiter.wait(&m_startWaitMutex, 100);
}
m_startWaitMutex.unlock();
}
void LimeSDRMIThread::stopWork()
{
if (!m_running) {
return; // return if not running
}
m_running = false;
wait();
int ret[2];
ret[0] = LMS_StopStream(m_stream0);
ret[1] = LMS_StopStream(m_stream1);
if (ret[0] < 0) {
qCritical("LimeSDRInputThread::stopWork: could not stop stream 0");
} else {
qDebug("LimeSDRInputThread::stopWork: stream 0 stopped");
}
if (m_stream1)
{
if (ret[1] < 0) {
qCritical("LimeSDRInputThread::stopWork: could not stop stream 1");
} else {
qDebug("LimeSDRInputThread::stopWork: stream 1 stopped");
}
}
usleep(50000);
}
void LimeSDRMIThread::setLog2Decimation(unsigned int log2_decim)
{
m_log2Decim = log2_decim;
}
unsigned int LimeSDRMIThread::getLog2Decimation() const
{
return m_log2Decim;
}
void LimeSDRMIThread::run()
{
lms_stream_meta_t metadata; //Use metadata for additional control over sample receive function behaviour
metadata.flushPartialPacket = false; //Do not discard data remainder when read size differs from packet size
metadata.waitForTimestamp = false; //Do not wait for specific timestamps
int lengths[2];
int res[2];
m_running = true;
m_startWaiter.wakeAll();
while (m_running && m_stream0)
{
res[0] = LMS_RecvStream(m_stream0, (void *) m_buf0, DeviceLimeSDR::blockSize, &metadata, 1000);
if (res[0] < 0)
{
qCritical("LimeSDRMIThread::run read stream 0 error: %s", strerror(errno));
break;
}
if (m_stream1)
{
res[1] = LMS_RecvStream(m_stream1, (void *) m_buf1, DeviceLimeSDR::blockSize, &metadata, 1000);
if (res[1] < 0)
{
qCritical("LimeSDRMIThread::run read stream 1 error: %s", strerror(errno));
break;
}
}
else
{
std::fill(m_buf1, m_buf1 + 2*DeviceLimeSDR::blockSize, 0);
res[1] = DeviceLimeSDR::blockSize;
}
if (m_iqOrder)
{
lengths[0] = channelCallbackIQ(m_buf0, 2*res[0], 0);
lengths[1] = channelCallbackIQ(m_buf1, 2*res[1], 1);
}
else
{
lengths[0] = channelCallbackQI(m_buf0, 2*res[0], 0);
lengths[1] = channelCallbackQI(m_buf1, 2*res[1], 1);
}
if (lengths[0] == lengths[1])
{
//qDebug("LimeSDRMIThread::run: writeSync %d samples", lengths[0]);
m_sampleFifo->writeSync(m_vBegin, lengths[0]);
}
else
{
qWarning("LimeSDRMIThread::run: unequal channel lengths: [0]=%d [1]=%d", lengths[0], lengths[1]);
m_sampleFifo->writeSync(m_vBegin, (std::min)(lengths[0], lengths[1]));
}
}
m_running = false;
}
int LimeSDRMIThread::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
{
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 LimeSDRMIThread::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
{
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();
}