mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-09-09 22:56:34 -04:00
236 lines
7.3 KiB
C++
236 lines
7.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 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 "dsp/samplemofifo.h"
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#include "limesdrmothread.h"
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LimeSDRMOThread::LimeSDRMOThread(lms_stream_t* stream0, lms_stream_t* stream1, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_stream0(stream0),
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m_stream1(stream1),
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m_sampleFifo(nullptr)
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{
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qDebug("LimeSDRMOThread::LimeSDRMOThread");
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m_buf = new qint16[2*DeviceLimeSDR::blockSize*2];
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std::fill(m_buf, m_buf + 2*DeviceLimeSDR::blockSize*2, 0);
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}
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LimeSDRMOThread::~LimeSDRMOThread()
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{
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qDebug("LimeSDRMOThread::~LimeSDRMOThread");
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if (m_running) {
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stopWork();
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}
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delete[] m_buf;
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}
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void LimeSDRMOThread::startWork()
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{
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if (m_running) {
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return; // return if running already
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}
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int ret[2];
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ret[0] = LMS_StartStream(m_stream0);
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ret[1] = LMS_StartStream(m_stream1);
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if (ret[0] < 0)
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{
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qCritical("LimeSDROutputThread::startWork: could not start stream 0");
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return;
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}
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else
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{
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qDebug("LimeSDROutputThread::startWork: stream 0 started");
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}
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if (m_stream1)
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{
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if (ret[1] < 0)
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{
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qCritical("LimeSDROutputThread::startWork: could not start stream 1");
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LMS_StopStream(m_stream0);
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return;
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}
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else
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{
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qDebug("LimeSDROutputThread::startWork: stream 1 started");
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}
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}
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usleep(50000);
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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 LimeSDRMOThread::stopWork()
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{
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if (!m_running) {
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return; // return if not running
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}
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m_running = false;
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wait();
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int ret[2];
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ret[0] = LMS_StopStream(m_stream0);
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ret[1] = LMS_StopStream(m_stream1);
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if (ret[0] < 0)
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{
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qCritical("LimeSDROutputThread::stopWork: could not stop stream 0");
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} else {
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qDebug("LimeSDROutputThread::stopWork: stream 0 stopped");
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}
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if (m_stream1)
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{
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if (ret[1] < 0)
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{
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qCritical("LimeSDROutputThread::stopWork: could not stop stream 1");
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} else {
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qDebug("LimeSDROutputThread::stopWork: stream 1 stopped");
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}
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}
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usleep(50000);
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}
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void LimeSDRMOThread::setLog2Interpolation(unsigned int log2Interp)
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{
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qDebug("LimeSDRMOThread::setLog2Interpolation: %u", log2Interp);
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m_log2Interp = log2Interp;
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}
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unsigned int LimeSDRMOThread::getLog2Interpolation() const
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{
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return m_log2Interp;
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}
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void LimeSDRMOThread::run()
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{
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lms_stream_meta_t metadata; //Use metadata for additional control over sample receive function behaviour
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metadata.flushPartialPacket = false; //Do not discard data remainder when read size differs from packet size
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metadata.waitForTimestamp = false; //Do not wait for specific timestamps
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m_running = true;
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m_startWaiter.wakeAll();
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int res[2];
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while (m_running)
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{
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callback(m_buf, DeviceLimeSDR::blockSize);
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res[0] = LMS_SendStream(m_stream0, (void *) &m_buf[0], DeviceLimeSDR::blockSize, &metadata, 1000000);
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if (res[0] < 0)
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{
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qCritical("LimeSDROutputThread::run stream 0 write error: %s", strerror(errno));
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break;
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}
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else if (res[0] != DeviceLimeSDR::blockSize)
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{
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qDebug("LimeSDROutputThread::run stream 0 written %d/%u samples", res[0], DeviceLimeSDR::blockSize);
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}
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if (m_stream1)
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{
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res[1] = LMS_SendStream(m_stream1, (void *) &m_buf[2*DeviceLimeSDR::blockSize], DeviceLimeSDR::blockSize, &metadata, 1000000);
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if (res[1] < 0)
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{
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qCritical("LimeSDROutputThread::run stream 1 write error: %s", strerror(errno));
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break;
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}
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else if (res[1] != DeviceLimeSDR::blockSize)
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{
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qDebug("LimeSDROutputThread::run stream 1 written %d/%u samples", res[1], DeviceLimeSDR::blockSize);
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}
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}
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}
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m_running = false;
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}
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void LimeSDRMOThread::callback(qint16* buf, 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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{
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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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callbackPart(buf + 2*shift, (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 LimeSDRMOThread::callbackPart(qint16* buf, 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], 2*nSamples);
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}
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else
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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], 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], 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], 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], 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], 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], 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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