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sdrangel/plugins/channelrx/localsink/localsinkthread.cpp

103 lines
3.2 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019 Edouard Griffiths, F4EXB. //
// //
// 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 "dsp/samplesinkfifo.h"
#include "localsinkthread.h"
MESSAGE_CLASS_DEFINITION(LocalSinkThread::MsgStartStop, Message)
LocalSinkThread::LocalSinkThread(QObject* parent) :
QThread(parent),
m_running(false),
m_sampleFifo(0)
{
connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()), Qt::QueuedConnection);
}
LocalSinkThread::~LocalSinkThread()
{
qDebug("LocalSinkThread::~LocalSinkThread");
}
void LocalSinkThread::startStop(bool start)
{
MsgStartStop *msg = MsgStartStop::create(start);
m_inputMessageQueue.push(msg);
}
void LocalSinkThread::startWork()
{
qDebug("LocalSinkThread::startWork");
m_startWaitMutex.lock();
start();
while(!m_running)
m_startWaiter.wait(&m_startWaitMutex, 100);
m_startWaitMutex.unlock();
}
void LocalSinkThread::stopWork()
{
qDebug("LocalSinkThread::stopWork");
m_running = false;
wait();
}
void LocalSinkThread::run()
{
qDebug("LocalSinkThread::run: begin");
m_running = true;
m_startWaiter.wakeAll();
while (m_running)
{
sleep(1); // Do nothing as everything is in the data handler (dequeuer)
}
m_running = false;
qDebug("LocalSinkThread::run: end");
}
void LocalSinkThread::processSamples(const quint8* data, uint count)
{
if (m_sampleFifo && m_running) {
m_sampleFifo->write(data, count);
}
}
void LocalSinkThread::handleInputMessages()
{
Message* message;
while ((message = m_inputMessageQueue.pop()) != 0)
{
if (MsgStartStop::match(*message))
{
MsgStartStop* notif = (MsgStartStop*) message;
qDebug("LocalSinkThread::handleInputMessages: MsgStartStop: %s", notif->getStartStop() ? "start" : "stop");
if (notif->getStartStop()) {
startWork();
} else {
stopWork();
}
delete message;
}
}
}