mirror of
https://github.com/f4exb/sdrangel.git
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121 lines
3.5 KiB
C++
121 lines
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 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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// //
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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 <QtGlobal>
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#include <algorithm>
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#include "perseusthread.h"
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PerseusThread *PerseusThread::m_this = 0;
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PerseusThread::PerseusThread(perseus_descr* dev, SampleSinkFifo* sampleFifo, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_dev(dev),
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m_convertBuffer(PERSEUS_NBSAMPLES),
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m_sampleFifo(sampleFifo),
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m_log2Decim(0)
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{
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m_this = this;
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std::fill(m_buf, m_buf + 2*PERSEUS_NBSAMPLES, 0);
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}
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PerseusThread::~PerseusThread()
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{
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stopWork();
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m_this = 0;
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}
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void PerseusThread::startWork()
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{
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qDebug("PerseusThread::startWork");
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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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m_startWaitMutex.unlock();
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}
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void PerseusThread::stopWork()
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{
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qDebug("PerseusThread::stopWork");
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m_running = false;
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wait();
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}
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void PerseusThread::setLog2Decimation(unsigned int log2_decim)
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{
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m_log2Decim = log2_decim;
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}
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void PerseusThread::run()
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{
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m_running = true;
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m_startWaiter.wakeAll();
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int rc = perseus_start_async_input(m_dev, PERSEUS_BLOCKSIZE, rx_callback, 0);
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if (rc < 0) {
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qCritical("PerseusThread::run: failed to start Perseus Rx: %s", perseus_errorstr());
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}
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else
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{
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qDebug("PerseusThread::run: start Perseus Rx");
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while (m_running) {
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sleep(1);
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}
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}
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rc = perseus_stop_async_input(m_dev);
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if (rc < 0) {
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qCritical("PerseusThread::run: failed to stop Perseus Rx: %s", perseus_errorstr());
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} else {
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qDebug("PerseusThread::run: stopped Perseus Rx");
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}
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m_running = false;
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}
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void PerseusThread::callback(const uint8_t* buf, qint32 len)
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{
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SampleVector::iterator it = m_convertBuffer.begin();
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switch (m_log2Decim)
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{
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case 0:
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m_decimators32.decimate1(&it, (TripleByteLE<qint32>*) buf, len);
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break;
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case 1:
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m_decimators64.decimate2_cen(&it, (TripleByteLE<qint64>*) buf, len);
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break;
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case 2:
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m_decimators64.decimate4_cen(&it, (TripleByteLE<qint64>*) 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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m_sampleFifo->write(m_convertBuffer.begin(), it);
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}
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int PerseusThread::rx_callback(void *buf, int buf_size, void *extra __attribute__((unused)))
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{
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qint32 nbIAndQ = buf_size / 3; // 3 bytes per I or Q
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m_this->callback((uint8_t*) buf, nbIAndQ);
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return 0;
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}
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