hyperion.ng/libsrc/leddevice/LedDevice.cpp

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#include <leddevice/LedDevice.h>
#include <sstream>
//QT include
#include <QResource>
#include <QStringList>
#include <QDir>
#include <QDateTime>
#include "hyperion/Hyperion.h"
#include <utils/JsonUtils.h>
LedDevice::LedDevice(const QJsonObject& config, QObject* parent)
: QObject(parent)
, _devConfig(config)
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, _log(Logger::getInstance("LEDDEVICE"))
, _ledBuffer(0)
, _deviceReady(true)
, _refresh_timer()
, _refresh_timer_interval(0)
, _last_write_time(QDateTime::currentMSecsSinceEpoch())
, _latchTime_ms(0)
, _componentRegistered(false)
, _enabled(true)
{
// setup timer
_refresh_timer.setInterval(0);
connect(&_refresh_timer, SIGNAL(timeout()), this, SLOT(rewriteLeds()));
}
LedDevice::~LedDevice()
{
}
// dummy implemention
int LedDevice::open()
{
return 0;
}
void LedDevice::setEnable(bool enable)
{
// emit signal when state changed
if (_enabled != enable)
{
emit enableStateChanged(enable);
}
// set black to leds when they should go off
if ( _enabled && !enable)
{
switchOff();
}
else {
if ( !_enabled && enable)
{
switchOn();
}
}
_enabled = enable;
}
void LedDevice::setActiveDevice(QString dev)
{
_activeDevice = dev;
}
bool LedDevice::init(const QJsonObject &deviceConfig)
{
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_colorOrder = deviceConfig["colorOrder"].toString("RGB");
_activeDevice = deviceConfig["type"].toString("file").toLower();
setLedCount(deviceConfig["currentLedCount"].toInt(1)); // property injected to reflect real led count
_latchTime_ms = deviceConfig["latchTime"].toInt(_latchTime_ms);
_refresh_timer.setInterval( deviceConfig["rewriteTime"].toInt( _refresh_timer_interval) );
if (_refresh_timer.interval() <= (signed)_latchTime_ms )
{
Warning(_log, "latchTime(%d) is bigger/equal rewriteTime(%d)", _refresh_timer.interval(), _latchTime_ms);
_refresh_timer.setInterval(_latchTime_ms+10);
}
return true;
}
int LedDevice::setLedValues(const std::vector<ColorRgb>& ledValues)
{
int retval = 0;
if (!_deviceReady || !_enabled)
return -1;
// restart the timer
if (_refresh_timer.interval() > 0)
{
_refresh_timer.start();
}
if (_latchTime_ms == 0 || QDateTime::currentMSecsSinceEpoch()-_last_write_time >= _latchTime_ms)
{
_ledValues = ledValues;
retval = write(ledValues);
_last_write_time = QDateTime::currentMSecsSinceEpoch();
}
//else Debug(_log, "latch %d", QDateTime::currentMSecsSinceEpoch()-_last_write_time);
return retval;
}
int LedDevice::switchOff()
{
return _deviceReady ? write(std::vector<ColorRgb>(_ledCount, ColorRgb::BLACK )) : -1;
}
int LedDevice::switchOn()
{
return 0;
}
void LedDevice::setLedCount(int ledCount)
{
_ledCount = ledCount;
_ledRGBCount = _ledCount * sizeof(ColorRgb);
_ledRGBWCount = _ledCount * sizeof(ColorRgbw);
}
int LedDevice::rewriteLeds()
{
return _enabled ? write(_ledValues) : -1;
}