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50a80d0a61
* Added an 'RDDataPacer' class. * Modified the GVC7000 switcher driver to insert 50 mS pauses between protocol commands. Signed-off-by: Fred Gleason <fredg@paravelsystems.com>
81 lines
1.7 KiB
C++
81 lines
1.7 KiB
C++
// rddatapacer.cpp
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//
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// Pace a stream of data messages.
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//
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// (C) Copyright 2020 Fred Gleason <fredg@paravelsystems.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 version 2 as
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// published by the Free Software Foundation.
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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 for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#include "rddatapacer.h"
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RDDataPacer::RDDataPacer(QObject *parent)
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: QObject(parent)
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{
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d_pace_interval=RDDATAPACER_DEFAULT_PACE_INTERVAL;
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d_timer=new QTimer(this);
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d_timer->setSingleShot(true);
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connect(d_timer,SIGNAL(timeout()),this,SLOT(timeoutData()));
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}
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RDDataPacer::~RDDataPacer()
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{
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delete d_timer;
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}
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int RDDataPacer::paceInterval() const
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{
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return d_pace_interval;
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}
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void RDDataPacer::setPaceInterval(int msecs)
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{
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d_pace_interval=msecs;
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}
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void RDDataPacer::send(const QByteArray &data)
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{
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if(d_timer->isActive()) {
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//
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// Queue it up
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//
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d_data_queue.enqueue(data);
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}
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else {
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//
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// Wake up
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//
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emit dataSent(data);
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d_timer->start(d_pace_interval);
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}
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}
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void RDDataPacer::timeoutData()
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{
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if(d_data_queue.isEmpty()) {
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//
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// Nothing to do, go to sleep
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//
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return;
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}
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emit dataSent(d_data_queue.dequeue());
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d_timer->start(d_pace_interval);
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}
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