mirror of https://github.com/f4exb/sdrangel.git
256 lines
9.3 KiB
C++
256 lines
9.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019-2021 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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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/samplemofifo.h"
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#include "plutosdrmimosettings.h"
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#include "plutosdrmothread.h"
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PlutoSDRMOThread::PlutoSDRMOThread(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_log2Interp(0)
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{
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qDebug("PlutoSDRMOThread::PlutoSDRMOThread");
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m_buf[0] = new qint16[2*PlutoSDRMIMOSettings::m_plutoSDRBlockSizeSamples];
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m_buf[1] = new qint16[2*PlutoSDRMIMOSettings::m_plutoSDRBlockSizeSamples];
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}
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PlutoSDRMOThread::~PlutoSDRMOThread()
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{
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qDebug("PlutoSDRMOThread::~PlutoSDRMOThread");
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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 PlutoSDRMOThread::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 PlutoSDRMOThread::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 PlutoSDRMOThread::setLog2Interpolation(unsigned int log2Interp)
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{
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qDebug("PlutoSDRMOThread::setLog2Interpolation: %u", log2Interp);
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m_log2Interp = log2Interp;
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}
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unsigned int PlutoSDRMOThread::getLog2Interpolation() const
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{
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return m_log2Interp;
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}
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void PlutoSDRMOThread::setFcPos(int fcPos)
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{
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m_fcPos = fcPos;
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}
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int PlutoSDRMOThread::getFcPos() const
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{
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return m_fcPos;
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}
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void PlutoSDRMOThread::run()
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{
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std::ptrdiff_t p_inc = m_plutoBox->txBufferStep();
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int sampleSize = 2*m_plutoBox->getTxSampleBytes(); // 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("PlutoSDRMOThread::run: txBufferStep: %ld bytes", p_inc);
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qDebug("PlutoSDRMOThread::run: Rx all samples size is %ld bytes", m_plutoBox->getRxSampleSize());
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qDebug("PlutoSDRMOThread::run: Tx all samples size is %ld bytes", m_plutoBox->getTxSampleSize());
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qDebug("PlutoSDRMOThread::run: nominal nbytes_tx is %ld bytes", PlutoSDRMIMOSettings::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_tx;
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char *p_dat, *p_end;
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int ihs = 0; // half sample index (I then Q to make a sample)
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// WRITE: Get pointers to TX buf and number of bytes to read from FIFO
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p_dat = m_plutoBox->txBufferFirst();
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p_end = m_plutoBox->txBufferEnd();
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int nbOutSamples = (p_end - p_dat) / (4*nbChan);
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callback(m_buf, nbOutSamples);
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// p_inc is 2 on a char* buffer therefore each iteration processes only the I or Q sample
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// I and Q samples are processed one after the other
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// conversion is not needed as samples are little endian
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for (p_dat = m_plutoBox->txBufferFirst(), ihs = 0; p_dat < p_end; p_dat += p_inc, ihs += 2)
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{
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m_plutoBox->txChannelConvert((int16_t*) p_dat, &m_buf[0][ihs]);
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if (nbChan > 1) { // interleave with second chanel
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m_plutoBox->txChannelConvert(1, (int16_t*) (p_dat+sampleSize), &m_buf[1][ihs]);
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}
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}
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// Schedule TX buffer for sending
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nbytes_tx = m_plutoBox->txBufferPush();
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if (nbytes_tx != nbChan*sampleSize*PlutoSDRMIMOSettings::m_plutoSDRBlockSizeSamples)
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{
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qDebug("PlutoSDRMOThread::run: error pushing buf %d / %d",
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(int) nbytes_tx, (int) sampleSize*PlutoSDRMIMOSettings::m_plutoSDRBlockSizeSamples);
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usleep(200000);
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continue;
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}
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}
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m_running = false;
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}
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void PlutoSDRMOThread::callback(qint16* buf[2], qint32 samplesPerChannel)
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{
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unsigned int iPart1Begin, iPart1End, iPart2Begin, iPart2End;
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m_sampleFifo->readSync(samplesPerChannel/(1<<m_log2Interp), iPart1Begin, iPart1End, iPart2Begin, iPart2End);
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if (iPart1Begin != iPart1End) {
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callbackPart(buf, (iPart1End - iPart1Begin)*(1<<m_log2Interp), iPart1Begin);
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}
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if (iPart2Begin != iPart2End)
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{
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unsigned int shift = (iPart1End - iPart1Begin)*(1<<m_log2Interp);
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qint16 *buf2[2];
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buf2[0] = buf[0] + 2*shift;
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buf2[1] = buf[1] + 2*shift;
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callbackPart(buf2, (iPart2End - iPart2Begin)*(1<<m_log2Interp), iPart2Begin);
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}
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}
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// Interpolate according to specified log2 (ex: log2=4 => decim=16). len is a number of samples (not a number of I or Q)
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void PlutoSDRMOThread::callbackPart(qint16* buf[2], qint32 nSamples, int iBegin)
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{
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for (unsigned int channel = 0; channel < 2; channel++)
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{
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SampleVector::iterator begin = m_sampleFifo->getData(channel).begin() + iBegin;
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if (m_log2Interp == 0)
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{
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m_interpolators[channel].interpolate1(&begin, buf[channel], 2*nSamples);
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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_log2Interp)
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{
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case 1:
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m_interpolators[channel].interpolate2_inf(&begin, buf[channel], 2*nSamples);
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break;
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case 2:
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m_interpolators[channel].interpolate4_inf(&begin, buf[channel], 2*nSamples);
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break;
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case 3:
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m_interpolators[channel].interpolate8_inf(&begin, buf[channel], 2*nSamples);
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break;
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case 4:
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m_interpolators[channel].interpolate16_inf(&begin, buf[channel], 2*nSamples);
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break;
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case 5:
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m_interpolators[channel].interpolate32_inf(&begin, buf[channel], 2*nSamples);
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break;
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case 6:
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m_interpolators[channel].interpolate64_inf(&begin, buf[channel], 2*nSamples);
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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_log2Interp)
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{
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case 1:
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m_interpolators[channel].interpolate2_sup(&begin, buf[channel], 2*nSamples);
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break;
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case 2:
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m_interpolators[channel].interpolate4_sup(&begin, buf[channel], 2*nSamples);
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break;
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case 3:
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m_interpolators[channel].interpolate8_sup(&begin, buf[channel], 2*nSamples);
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break;
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case 4:
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m_interpolators[channel].interpolate16_sup(&begin, buf[channel], 2*nSamples);
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break;
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case 5:
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m_interpolators[channel].interpolate32_sup(&begin, buf[channel], 2*nSamples);
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break;
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case 6:
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m_interpolators[channel].interpolate64_sup(&begin, buf[channel], 2*nSamples);
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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_log2Interp)
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{
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case 1:
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m_interpolators[channel].interpolate2_cen(&begin, buf[channel], 2*nSamples);
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break;
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case 2:
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m_interpolators[channel].interpolate4_cen(&begin, buf[channel], 2*nSamples);
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break;
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case 3:
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m_interpolators[channel].interpolate8_cen(&begin, buf[channel], 2*nSamples);
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break;
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case 4:
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m_interpolators[channel].interpolate16_cen(&begin, buf[channel], 2*nSamples);
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break;
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case 5:
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m_interpolators[channel].interpolate32_cen(&begin, buf[channel], 2*nSamples);
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break;
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case 6:
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m_interpolators[channel].interpolate64_cen(&begin, buf[channel], 2*nSamples);
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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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}
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}
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