Leddevices source tree refactoring (#461)

* rework structure of leddevice source tree

* fix data type vor v4l sig detection value in webui

* automate leddevicefactory.cpp

libsrc/leddevice/dev_net/ProviderUdp.cpp

@@ -0,0 +1,83 @@
+
+// STL includes
+#include <cstring>
+#include <cstdio>
+#include <iostream>
+#include <exception>
+// Linux includes
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#include <QStringList>
+#include <QUdpSocket>
+#include <QHostInfo>
+
+// Local Hyperion includes
+#include "ProviderUdp.h"
+
+ProviderUdp::ProviderUdp()
+	: LedDevice()
+	, _port(1)
+	, _defaultHost("127.0.0.1")
+{
+	_latchTime_ms = 1;
+	_udpSocket = new QUdpSocket();
+}
+
+ProviderUdp::~ProviderUdp()
+{
+	_udpSocket->close();
+}
+
+bool ProviderUdp::init(const QJsonObject &deviceConfig)
+{
+	LedDevice::init(deviceConfig);
+
+	QString host = deviceConfig["host"].toString(_defaultHost);
+	
+	if (_address.setAddress(host) )
+	{
+		Debug( _log, "Successfully parsed %s as an ip address.", deviceConfig["host"].toString().toStdString().c_str());
+	}
+	else
+	{
+		Debug( _log, "Failed to parse %s as an ip address.", deviceConfig["host"].toString().toStdString().c_str());
+		QHostInfo info = QHostInfo::fromName(host);
+		if (info.addresses().isEmpty())
+		{
+			Debug( _log, "Failed to parse %s as a hostname.", deviceConfig["host"].toString().toStdString().c_str());
+			throw std::runtime_error("invalid target address");
+		}
+		Debug( _log, "Successfully parsed %s as a hostname.", deviceConfig["host"].toString().toStdString().c_str());
+		_address = info.addresses().first();
+	}
+
+	_port = deviceConfig["port"].toInt(_port);
+	if ( _port<=0 || _port > 65535)
+	{
+		throw std::runtime_error("invalid target port");
+	}
+	
+	Debug( _log, "UDP using %s:%d", _address.toString().toStdString().c_str() , _port );
+	
+	return true;
+}
+
+int ProviderUdp::open()
+{
+	QHostAddress localAddress = QHostAddress::Any;
+	quint16      localPort = 0;
+
+	WarningIf( !_udpSocket->bind(localAddress, localPort), _log, "Could not bind local address: %s", strerror(errno));
+
+	return 0;
+}
+
+int ProviderUdp::writeBytes(const unsigned size, const uint8_t * data)
+{
+
+	qint64 retVal = _udpSocket->writeDatagram((const char *)data,size,_address,_port);
+	WarningIf((retVal<0), _log, "Error sending: %s", strerror(errno));
+
+	return retVal;
+}