mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-12-23 18:15:45 -05:00
315 lines
9.8 KiB
C++
315 lines
9.8 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2016-2021 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
|
|
// Copyright (C) 2020 Felix Schneider <felix@fx-schneider.de> //
|
|
// //
|
|
// 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 "plutosdrinputsettings.h"
|
|
#include "plutosdrinputthread.h"
|
|
|
|
#include "iio.h"
|
|
|
|
PlutoSDRInputThread::PlutoSDRInputThread(uint32_t blocksizeSamples, DevicePlutoSDRBox* plutoBox, SampleSinkFifo* sampleFifo, QObject* parent) :
|
|
QThread(parent),
|
|
m_running(false),
|
|
m_plutoBox(plutoBox),
|
|
m_blockSizeSamples(blocksizeSamples),
|
|
m_convertBuffer(blocksizeSamples),
|
|
m_convertIt(m_convertBuffer.begin()),
|
|
m_sampleFifo(sampleFifo),
|
|
m_log2Decim(0),
|
|
m_fcPos(PlutoSDRInputSettings::FC_POS_CENTER),
|
|
m_phasor(0),
|
|
m_iqOrder(true)
|
|
{
|
|
m_buf = new qint16[blocksizeSamples*2]; // (I,Q) -> 2 * int16_t
|
|
m_bufConv = new qint16[blocksizeSamples*2]; // (I,Q) -> 2 * int16_t
|
|
}
|
|
|
|
PlutoSDRInputThread::~PlutoSDRInputThread()
|
|
{
|
|
stopWork();
|
|
delete[] m_buf;
|
|
}
|
|
|
|
void PlutoSDRInputThread::startWork()
|
|
{
|
|
if (m_running) return; // return if running already
|
|
|
|
m_startWaitMutex.lock();
|
|
start();
|
|
while(!m_running)
|
|
m_startWaiter.wait(&m_startWaitMutex, 100);
|
|
m_startWaitMutex.unlock();
|
|
}
|
|
|
|
void PlutoSDRInputThread::stopWork()
|
|
{
|
|
if (!m_running) return; // return if not running
|
|
|
|
m_running = false;
|
|
wait();
|
|
}
|
|
|
|
void PlutoSDRInputThread::setLog2Decimation(unsigned int log2_decim)
|
|
{
|
|
m_log2Decim = log2_decim;
|
|
}
|
|
|
|
void PlutoSDRInputThread::setFcPos(int fcPos)
|
|
{
|
|
m_fcPos = fcPos;
|
|
}
|
|
|
|
void PlutoSDRInputThread::run()
|
|
{
|
|
std::ptrdiff_t p_inc = m_plutoBox->rxBufferStep();
|
|
|
|
qDebug("PlutoSDRInputThread::run: rxBufferStep: %ld bytes", p_inc);
|
|
qDebug("PlutoSDRInputThread::run: Rx sample size is %ld bytes", m_plutoBox->getRxSampleSize());
|
|
qDebug("PlutoSDRInputThread::run: Tx sample size is %ld bytes", m_plutoBox->getTxSampleSize());
|
|
qDebug("PlutoSDRInputThread::run: nominal nbytes_rx is %d bytes with 1 refill", m_blockSizeSamples*4);
|
|
|
|
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_blockSizeSamples*4)
|
|
{
|
|
qWarning("PlutoSDRInputThread::run: error refilling buf %d / %d",(int) nbytes_rx, (int) m_blockSizeSamples*4);
|
|
usleep(200000);
|
|
continue;
|
|
}
|
|
|
|
// READ: Get pointers to RX buf and read IQ from RX buf port 0
|
|
p_end = m_plutoBox->rxBufferEnd();
|
|
ihs = 0;
|
|
|
|
// p_inc is 4 on a char* buffer therefore each iteration processes a single IQ sample,
|
|
// I and Q each being two bytes
|
|
// conversion is not needed as samples are little endian
|
|
|
|
for (p_dat = m_plutoBox->rxBufferFirst(); p_dat < p_end; p_dat += p_inc)
|
|
{
|
|
m_buf[ihs++] = *((int16_t *) p_dat);
|
|
m_buf[ihs++] = *(((int16_t *) p_dat) + 1);
|
|
}
|
|
|
|
if (m_iqOrder) {
|
|
convertIQ(m_buf, 2*m_blockSizeSamples); // size given in number of int16_t (I and Q interleaved)
|
|
} else {
|
|
convertQI(m_buf, 2*m_blockSizeSamples);
|
|
}
|
|
}
|
|
|
|
m_running = false;
|
|
}
|
|
|
|
// Decimate according to specified log2 (ex: log2=4 => decim=16)
|
|
void PlutoSDRInputThread::convertIQ(const qint16* buf, qint32 len)
|
|
{
|
|
SampleVector::iterator it = m_convertBuffer.begin();
|
|
|
|
if (m_log2Decim == 0)
|
|
{
|
|
m_decimatorsIQ.decimate1(&it, buf, len);
|
|
}
|
|
else
|
|
{
|
|
if (m_fcPos == 0) // Infra
|
|
{
|
|
switch (m_log2Decim)
|
|
{
|
|
case 1:
|
|
m_decimatorsIQ.decimate2_inf(&it, buf, len);
|
|
break;
|
|
case 2:
|
|
m_decimatorsIQ.decimate4_inf(&it, buf, len);
|
|
break;
|
|
case 3:
|
|
m_decimatorsIQ.decimate8_inf(&it, buf, len);
|
|
break;
|
|
case 4:
|
|
m_decimatorsIQ.decimate16_inf(&it, buf, len);
|
|
break;
|
|
case 5:
|
|
m_decimatorsIQ.decimate32_inf(&it, buf, len);
|
|
break;
|
|
case 6:
|
|
m_decimatorsIQ.decimate64_inf(&it, buf, len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else if (m_fcPos == 1) // Supra
|
|
{
|
|
switch (m_log2Decim)
|
|
{
|
|
case 1:
|
|
m_decimatorsIQ.decimate2_sup(&it, buf, len);
|
|
break;
|
|
case 2:
|
|
m_decimatorsIQ.decimate4_sup(&it, buf, len);
|
|
break;
|
|
case 3:
|
|
m_decimatorsIQ.decimate8_sup(&it, buf, len);
|
|
break;
|
|
case 4:
|
|
m_decimatorsIQ.decimate16_sup(&it, buf, len);
|
|
break;
|
|
case 5:
|
|
m_decimatorsIQ.decimate32_sup(&it, buf, len);
|
|
break;
|
|
case 6:
|
|
m_decimatorsIQ.decimate64_sup(&it, buf, len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else if (m_fcPos == 2) // Center
|
|
{
|
|
switch (m_log2Decim)
|
|
{
|
|
case 1:
|
|
m_decimatorsIQ.decimate2_cen(&it, buf, len);
|
|
break;
|
|
case 2:
|
|
m_decimatorsIQ.decimate4_cen(&it, buf, len);
|
|
break;
|
|
case 3:
|
|
m_decimatorsIQ.decimate8_cen(&it, buf, len);
|
|
break;
|
|
case 4:
|
|
m_decimatorsIQ.decimate16_cen(&it, buf, len);
|
|
break;
|
|
case 5:
|
|
m_decimatorsIQ.decimate32_cen(&it, buf, len);
|
|
break;
|
|
case 6:
|
|
m_decimatorsIQ.decimate64_cen(&it, buf, len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
m_sampleFifo->write(m_convertBuffer.begin(), it);
|
|
}
|
|
|
|
void PlutoSDRInputThread::convertQI(const qint16* buf, qint32 len)
|
|
{
|
|
SampleVector::iterator it = m_convertBuffer.begin();
|
|
|
|
if (m_log2Decim == 0)
|
|
{
|
|
m_decimatorsQI.decimate1(&it, buf, len);
|
|
}
|
|
else
|
|
{
|
|
if (m_fcPos == 0) // Infra
|
|
{
|
|
switch (m_log2Decim)
|
|
{
|
|
case 1:
|
|
m_decimatorsQI.decimate2_inf(&it, buf, len);
|
|
break;
|
|
case 2:
|
|
m_decimatorsQI.decimate4_inf(&it, buf, len);
|
|
break;
|
|
case 3:
|
|
m_decimatorsQI.decimate8_inf(&it, buf, len);
|
|
break;
|
|
case 4:
|
|
m_decimatorsQI.decimate16_inf(&it, buf, len);
|
|
break;
|
|
case 5:
|
|
m_decimatorsQI.decimate32_inf(&it, buf, len);
|
|
break;
|
|
case 6:
|
|
m_decimatorsQI.decimate64_inf(&it, buf, len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else if (m_fcPos == 1) // Supra
|
|
{
|
|
switch (m_log2Decim)
|
|
{
|
|
case 1:
|
|
m_decimatorsQI.decimate2_sup(&it, buf, len);
|
|
break;
|
|
case 2:
|
|
m_decimatorsQI.decimate4_sup(&it, buf, len);
|
|
break;
|
|
case 3:
|
|
m_decimatorsQI.decimate8_sup(&it, buf, len);
|
|
break;
|
|
case 4:
|
|
m_decimatorsQI.decimate16_sup(&it, buf, len);
|
|
break;
|
|
case 5:
|
|
m_decimatorsQI.decimate32_sup(&it, buf, len);
|
|
break;
|
|
case 6:
|
|
m_decimatorsQI.decimate64_sup(&it, buf, len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else if (m_fcPos == 2) // Center
|
|
{
|
|
switch (m_log2Decim)
|
|
{
|
|
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);
|
|
}
|