kopia lustrzana https://github.com/f4exb/sdrangel
361 wiersze
11 KiB
C++
361 wiersze
11 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2021 Edouard Griffiths, F4EXB //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include "plutosdr/deviceplutosdrbox.h"
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#include "dsp/samplemififo.h"
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#include "plutosdrmimosettings.h"
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#include "plutosdrmithread.h"
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PlutoSDRMIThread::PlutoSDRMIThread(DevicePlutoSDRBox* plutoBox, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_plutoBox(plutoBox),
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m_sampleFifo(nullptr),
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m_iqOrder(true)
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{
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qDebug("PlutoSDRMIThread::PlutoSDRMIThread");
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m_buf[0] = new qint16[2*m_plutoSDRBlockSizeSamples];
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m_buf[1] = new qint16[2*m_plutoSDRBlockSizeSamples];
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for (unsigned int i = 0; i < 2; i++) {
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m_convertBuffer[i].resize(m_plutoSDRBlockSizeSamples, Sample{0,0});
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}
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}
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PlutoSDRMIThread::~PlutoSDRMIThread()
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{
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qDebug("PlutoSDRMIThread::~PlutoSDRMIThread");
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if (m_running) {
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stopWork();
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}
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delete[] m_buf[0];
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delete[] m_buf[1];
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}
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void PlutoSDRMIThread::startWork()
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{
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m_startWaitMutex.lock();
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start();
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while(!m_running) {
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m_startWaiter.wait(&m_startWaitMutex, 100);
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}
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m_startWaitMutex.unlock();
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}
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void PlutoSDRMIThread::stopWork()
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{
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m_running = false;
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wait();
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}
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void PlutoSDRMIThread::setLog2Decimation(unsigned int log2Decim)
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{
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m_log2Decim = log2Decim;
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}
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unsigned int PlutoSDRMIThread::getLog2Decimation() const
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{
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return m_log2Decim;
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}
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void PlutoSDRMIThread::setFcPos(int fcPos)
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{
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m_fcPos = fcPos;
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}
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int PlutoSDRMIThread::getFcPos() const
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{
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return m_fcPos;
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}
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void PlutoSDRMIThread::run()
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{
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std::ptrdiff_t p_inc = m_plutoBox->rxBufferStep();
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int sampleSize = 2*m_plutoBox->getRxSampleBytes(); // I/Q sample size in bytes
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int nbChan = p_inc / sampleSize; // number of I/Q channels
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qDebug("PlutoSDRMOThread::run: nbChan: %d", nbChan);
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qDebug("PlutoSDRMOThread::run: I+Q bytes %d", sampleSize);
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qDebug("PlutoSDRMIThread::run: rxBufferStep: %ld bytes", p_inc);
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qDebug("PlutoSDRMIThread::run: Rx all samples size is %ld bytes", m_plutoBox->getRxSampleSize());
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qDebug("PlutoSDRMIThread::run: Tx all samples size is %ld bytes", m_plutoBox->getTxSampleSize());
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qDebug("PlutoSDRMIThread::run: nominal nbytes_rx is %ld bytes with 1 refill", m_plutoSDRBlockSizeSamples*p_inc);
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m_running = true;
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m_startWaiter.wakeAll();
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while (m_running)
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{
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ssize_t nbytes_rx;
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char *p_dat, *p_end;
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int ihs; // half sample index (I then Q to make a sample)
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// Refill RX buffer
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nbytes_rx = m_plutoBox->rxBufferRefill();
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if (nbytes_rx != m_plutoSDRBlockSizeSamples*p_inc)
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{
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qWarning("PlutoSDRMIThread::run: error refilling buf %d / %ld", (int) nbytes_rx, (int) m_plutoSDRBlockSizeSamples*p_inc);
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usleep(200000);
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continue;
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}
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// READ: Get pointers to RX buf and read IQ from RX buf port 0
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p_dat = m_plutoBox->rxBufferFirst();
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p_end = m_plutoBox->rxBufferEnd();
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ihs = 0;
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// p_inc is 8 on a char* buffer therefore each iteration processes a couple of IQ samples,
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// I and Q each being two bytes
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// conversion is not needed as samples are little endian
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for (; p_dat < p_end; p_dat += p_inc, ihs += 2)
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{
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m_buf[0][ihs] = *(((int16_t *) p_dat) + 0);
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m_buf[0][ihs+1] = *(((int16_t *) p_dat) + 1);
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if (nbChan == 1)
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{
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m_buf[1][ihs] = 0;
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m_buf[1][ihs+1] = 0;
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}
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else if (nbChan == 2)
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{
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m_buf[1][ihs] = *(((int16_t *) p_dat) + 2);
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m_buf[1][ihs+1] = *(((int16_t *) p_dat) + 3);
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}
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}
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std::vector<SampleVector::const_iterator> vbegin;
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int lengths[2];
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for (unsigned int channel = 0; channel < 2; channel++)
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{
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if (m_iqOrder) {
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lengths[channel] = channelCallbackIQ(m_buf[channel], 2*m_plutoSDRBlockSizeSamples, channel);
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} else {
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lengths[channel] = channelCallbackQI(m_buf[channel], 2*m_plutoSDRBlockSizeSamples, channel);
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}
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vbegin.push_back(m_convertBuffer[channel].begin());
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}
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if (lengths[0] == lengths[1])
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{
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m_sampleFifo->writeSync(vbegin, lengths[0]);
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}
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else
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{
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qWarning("PlutoSDRMIThread::run: unequal channel lengths: [0]=%d [1]=%d", lengths[0], lengths[1]);
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m_sampleFifo->writeSync(vbegin, (std::min)(lengths[0], lengths[1]));
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}
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}
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m_running = false;
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}
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int PlutoSDRMIThread::channelCallbackIQ(const qint16* buf, qint32 len, int channel)
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{
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SampleVector::iterator it = m_convertBuffer[channel].begin();
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if (m_log2Decim == 0)
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{
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m_decimatorsIQ[channel].decimate1(&it, buf, len);
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}
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else
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{
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if (m_fcPos == 0) // Infra
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimatorsIQ[channel].decimate2_inf(&it, buf, len);
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break;
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case 2:
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m_decimatorsIQ[channel].decimate4_inf(&it, buf, len);
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break;
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case 3:
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m_decimatorsIQ[channel].decimate8_inf(&it, buf, len);
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break;
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case 4:
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m_decimatorsIQ[channel].decimate16_inf(&it, buf, len);
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break;
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case 5:
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m_decimatorsIQ[channel].decimate32_inf(&it, buf, len);
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break;
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case 6:
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m_decimatorsIQ[channel].decimate64_inf(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else if (m_fcPos == 1) // Supra
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimatorsIQ[channel].decimate2_sup(&it, buf, len);
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break;
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case 2:
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m_decimatorsIQ[channel].decimate4_sup(&it, buf, len);
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break;
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case 3:
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m_decimatorsIQ[channel].decimate8_sup(&it, buf, len);
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break;
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case 4:
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m_decimatorsIQ[channel].decimate16_sup(&it, buf, len);
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break;
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case 5:
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m_decimatorsIQ[channel].decimate32_sup(&it, buf, len);
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break;
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case 6:
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m_decimatorsIQ[channel].decimate64_sup(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else if (m_fcPos == 2) // Center
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimatorsIQ[channel].decimate2_cen(&it, buf, len);
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break;
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case 2:
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m_decimatorsIQ[channel].decimate4_cen(&it, buf, len);
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break;
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case 3:
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m_decimatorsIQ[channel].decimate8_cen(&it, buf, len);
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break;
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case 4:
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m_decimatorsIQ[channel].decimate16_cen(&it, buf, len);
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break;
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case 5:
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m_decimatorsIQ[channel].decimate32_cen(&it, buf, len);
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break;
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case 6:
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m_decimatorsIQ[channel].decimate64_cen(&it, buf, len);
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break;
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default:
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break;
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}
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}
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}
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return it - m_convertBuffer[channel].begin();
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}
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int PlutoSDRMIThread::channelCallbackQI(const qint16* buf, qint32 len, int channel)
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{
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SampleVector::iterator it = m_convertBuffer[channel].begin();
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if (m_log2Decim == 0)
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{
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m_decimatorsQI[channel].decimate1(&it, buf, len);
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}
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else
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{
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if (m_fcPos == 0) // Infra
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimatorsQI[channel].decimate2_inf(&it, buf, len);
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break;
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case 2:
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m_decimatorsQI[channel].decimate4_inf(&it, buf, len);
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break;
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case 3:
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m_decimatorsQI[channel].decimate8_inf(&it, buf, len);
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break;
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case 4:
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m_decimatorsQI[channel].decimate16_inf(&it, buf, len);
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break;
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case 5:
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m_decimatorsQI[channel].decimate32_inf(&it, buf, len);
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break;
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case 6:
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m_decimatorsQI[channel].decimate64_inf(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else if (m_fcPos == 1) // Supra
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimatorsQI[channel].decimate2_sup(&it, buf, len);
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break;
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case 2:
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m_decimatorsQI[channel].decimate4_sup(&it, buf, len);
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break;
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case 3:
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m_decimatorsQI[channel].decimate8_sup(&it, buf, len);
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break;
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case 4:
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m_decimatorsQI[channel].decimate16_sup(&it, buf, len);
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break;
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case 5:
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m_decimatorsQI[channel].decimate32_sup(&it, buf, len);
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break;
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case 6:
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m_decimatorsQI[channel].decimate64_sup(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else if (m_fcPos == 2) // Center
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{
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switch (m_log2Decim)
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{
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case 1:
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m_decimatorsQI[channel].decimate2_cen(&it, buf, len);
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break;
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case 2:
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m_decimatorsQI[channel].decimate4_cen(&it, buf, len);
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break;
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case 3:
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m_decimatorsQI[channel].decimate8_cen(&it, buf, len);
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break;
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case 4:
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m_decimatorsQI[channel].decimate16_cen(&it, buf, len);
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break;
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case 5:
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m_decimatorsQI[channel].decimate32_cen(&it, buf, len);
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break;
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case 6:
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m_decimatorsQI[channel].decimate64_cen(&it, buf, len);
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break;
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default:
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break;
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}
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}
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}
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return it - m_convertBuffer[channel].begin();
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}
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