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enttecdmxusbopen.cpp
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enttecdmxusbopen.cpp
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/*
Q Light Controller
enttecdmxusbopen.cpp
Copyright (C) Heikki Junnila
Christopher Staite
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0.txt
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include <QSettings>
#include <QDebug>
#include <QTime>
#include "enttecdmxusbopen.h"
#include "qlcmacros.h"
#define DMX_MAB 16
#define DMX_BREAK 110
#define DEFAULT_OPEN_DMX_FREQUENCY 30 // crap
#define SETTINGS_CHANNELS "enttecdmxusbopen/channels"
/****************************************************************************
* Initialization
****************************************************************************/
EnttecDMXUSBOpen::EnttecDMXUSBOpen(DMXInterface *iface,
quint32 outputLine, QObject* parent)
: QThread(parent)
, DMXUSBWidget(iface, outputLine, DEFAULT_OPEN_DMX_FREQUENCY)
, m_running(false)
, m_granularity(Unknown)
{
QSettings settings;
QVariant var = settings.value(SETTINGS_CHANNELS);
if (var.isValid() == true)
{
int channels = var.toInt();
if (channels > DMX_CHANNELS || channels <= 0)
channels = DMX_CHANNELS;
// channels + 1 Because the first byte is always zero
// to break a full DMX universe transmission
m_outputLines[0].m_universeData = QByteArray(channels + 1, 0);
}
else
{
m_outputLines[0].m_universeData = QByteArray(DMX_CHANNELS + 1, 0);
}
// on macOS, QtSerialPort cannot handle an OpenDMX device
// so, unfortunately, we need to switch back to libftdi
#if defined(Q_OS_MACOS) && defined(QTSERIAL) && (defined(LIBFTDI1) || defined(LIBFTDI))
if (iface->type() == DMXInterface::QtSerial)
forceInterfaceDriver(DMXInterface::libFTDI);
#endif
}
EnttecDMXUSBOpen::~EnttecDMXUSBOpen()
{
stop();
}
DMXUSBWidget::Type EnttecDMXUSBOpen::type() const
{
return DMXUSBWidget::OpenTX;
}
/****************************************************************************
* Open & Close
****************************************************************************/
bool EnttecDMXUSBOpen::open(quint32 line, bool input)
{
Q_UNUSED(input)
if (iface()->type() != DMXInterface::QtSerial)
{
if (DMXUSBWidget::open(line) == false)
return close(line);
if (iface()->clearRts() == false)
return close(line);
}
start(QThread::TimeCriticalPriority);
return true;
}
bool EnttecDMXUSBOpen::close(quint32 line, bool input)
{
Q_UNUSED(input)
stop();
return DMXUSBWidget::close(line);
}
/****************************************************************************
* Name & Serial
****************************************************************************/
QString EnttecDMXUSBOpen::additionalInfo() const
{
QString info;
QString gran;
info += QString("<P>");
info += QString("<B>%1:</B> %2").arg(tr("Protocol")).arg("Open DMX USB");
info += QString("<BR>");
info += QString("<B>%1:</B> %2").arg(QObject::tr("Manufacturer"))
.arg(vendor());
info += QString("<BR>");
info += QString("<B>%1:</B> %2").arg(tr("DMX Channels"))
.arg(m_outputLines[0].m_universeData.size()-1);
info += QString("<BR>");
info += QString("<B>%1:</B> %2Hz").arg(tr("DMX Frame Frequency"))
.arg(m_frequency);
info += QString("<BR>");
if (m_granularity == Bad)
gran = QString("<FONT COLOR=\"#aa0000\">%1</FONT>").arg(tr("Bad"));
else if (m_granularity == Good)
gran = QString("<FONT COLOR=\"#00aa00\">%1</FONT>").arg(tr("Good"));
else
gran = tr("Patch this widget to a universe to find out.");
info += QString("<B>%1:</B> %2").arg(tr("System Timer Accuracy")).arg(gran);
info += QString("</P>");
return info;
}
/****************************************************************************
* Thread
****************************************************************************/
bool EnttecDMXUSBOpen::writeUniverse(quint32 universe, quint32 output, const QByteArray& data, bool dataChanged)
{
Q_UNUSED(universe)
Q_UNUSED(output)
if (dataChanged)
m_outputLines[0].m_universeData.replace(1, MIN(data.size(), m_outputLines[0].m_universeData.size() - 1),
data.constData(), MIN(data.size(), m_outputLines[0].m_universeData.size() - 1));
return true;
}
void EnttecDMXUSBOpen::stop()
{
if (isRunning() == true)
{
m_running = false;
wait();
}
}
void EnttecDMXUSBOpen::run()
{
// Wait for device to settle in case the device was opened just recently
// Also measure, whether timer granularity is OK
QElapsedTimer time;
time.start();
usleep(1000);
if (time.elapsed() > 3)
m_granularity = Bad;
else
m_granularity = Good;
if (iface()->type() == DMXInterface::QtSerial)
{
if (DMXUSBWidget::open(0) == false)
{
close(0);
return;
}
if (iface()->clearRts() == false)
{
close(0);
return;
}
}
m_running = true;
while (m_running == true)
{
// Measure how much time passes during these calls
time.restart();
if (iface()->setBreak(true) == false)
goto framesleep;
if (m_granularity == Good)
usleep(DMX_BREAK);
if (iface()->setBreak(false) == false)
goto framesleep;
if (m_granularity == Good)
usleep(DMX_MAB);
if (iface()->write(m_outputLines[0].m_universeData) == false)
goto framesleep;
framesleep:
// Sleep for the remainder of the DMX frame time
if (m_granularity == Good)
while (time.elapsed() < (m_frameTimeUs / 1000)) { usleep(1000); }
else
while (time.elapsed() < (m_frameTimeUs / 1000)) { /* Busy sleep */ }
}
}