sdrangel/plugins/samplesource/fcdpro/fcdprothread.cpp

184 wiersze
4.7 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// //
// 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 <QDebug>
#include <stdio.h>
#include <errno.h>
#include <chrono>
#include <thread>
#include "dsp/samplesinkfifo.h"
#include "audio/audiofifo.h"
#include "fcdprothread.h"
FCDProThread::FCDProThread(SampleSinkFifo* sampleFifo, AudioFifo *fcdFIFO, QObject* parent) :
QThread(parent),
m_fcdFIFO(fcdFIFO),
m_running(false),
m_log2Decim(0),
m_fcPos(2),
m_convertBuffer(fcd_traits<Pro>::convBufSize), // nb samples
m_sampleFifo(sampleFifo)
{
start();
}
FCDProThread::~FCDProThread()
{
}
void FCDProThread::startWork()
{
m_startWaitMutex.lock();
start();
while(!m_running)
{
m_startWaiter.wait(&m_startWaitMutex, 100);
}
m_startWaitMutex.unlock();
}
void FCDProThread::stopWork()
{
m_running = false;
wait();
}
void FCDProThread::setLog2Decimation(unsigned int log2_decim)
{
m_log2Decim = log2_decim;
}
void FCDProThread::setFcPos(int fcPos)
{
m_fcPos = fcPos;
}
void FCDProThread::run()
{
m_running = true;
qDebug("FCDProThread::run: start running loop");
while (m_running)
{
work(fcd_traits<Pro>::convBufSize);
std::this_thread::sleep_for(std::chrono::microseconds(200));
}
qDebug("FCDProThread::run: running loop stopped");
m_running = false;
}
void FCDProThread::work(unsigned int n_items)
{
uint32_t nbRead = m_fcdFIFO->read((unsigned char *) m_buf, n_items); // number of samples
SampleVector::iterator it = m_convertBuffer.begin();
if (m_log2Decim == 0)
{
m_decimators.decimate1(&it, m_buf, 2*nbRead);
}
else
{
if (m_fcPos == 0) // Infradyne
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_inf(&it, m_buf, 2*nbRead);
break;
case 2:
m_decimators.decimate4_inf(&it, m_buf, 2*nbRead);
break;
case 3:
m_decimators.decimate8_inf(&it, m_buf, 2*nbRead);
break;
case 4:
m_decimators.decimate16_inf(&it, m_buf, 2*nbRead);
break;
case 5:
m_decimators.decimate32_inf(&it, m_buf, 2*nbRead);
break;
case 6:
m_decimators.decimate64_inf(&it, m_buf, 2*nbRead);
break;
default:
break;
}
}
else if (m_fcPos == 1) // Supradyne
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_sup(&it, m_buf, 2*nbRead);
break;
case 2:
m_decimators.decimate4_sup(&it, m_buf, 2*nbRead);
break;
case 3:
m_decimators.decimate8_sup(&it, m_buf, 2*nbRead);
break;
case 4:
m_decimators.decimate16_sup(&it, m_buf, 2*nbRead);
break;
case 5:
m_decimators.decimate32_sup(&it, m_buf, 2*nbRead);
break;
case 6:
m_decimators.decimate64_sup(&it, m_buf, 2*nbRead);
break;
default:
break;
}
}
else // Centered
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_cen(&it, m_buf, 2*nbRead);
break;
case 2:
m_decimators.decimate4_cen(&it, m_buf, 2*nbRead);
break;
case 3:
m_decimators.decimate8_cen(&it, m_buf, 2*nbRead);
break;
case 4:
m_decimators.decimate16_cen(&it, m_buf, 2*nbRead);
break;
case 5:
m_decimators.decimate32_cen(&it, m_buf, 2*nbRead);
break;
case 6:
m_decimators.decimate64_cen(&it, m_buf, 2*nbRead);
break;
default:
break;
}
}
}
m_sampleFifo->write(m_convertBuffer.begin(), it);
}