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/LedDeviceUdpArtNet.h

@@ -0,0 +1,79 @@
+#pragma once
+
+// hyperion includes
+#include "ProviderUdp.h"
+
+#include <QUuid>
+
+/**
+ *
+ *  This program is provided free for you to use in any way that you wish,
+ *  subject to the laws and regulations where you are using it.  Due diligence
+ *  is strongly suggested before using this code.  Please give credit where due.
+ *
+ **/
+
+#define ArtNet_DEFAULT_PORT	5568
+
+#define DMX_MAX			512        // 512 usable slots
+
+// http://stackoverflow.com/questions/16396013/artnet-packet-structure
+typedef union
+{
+	struct {
+		char		ID[8];		// "Art-Net"
+		uint16_t	OpCode;		// See Doc. Table 1 - OpCodes eg. 0x5000 OpOutput / OpDmx
+		uint16_t	ProtVer;	// 0x0e00 (aka 14)
+		uint8_t		Sequence;	// monotonic counter
+		uint8_t		Physical;	// 0x00
+		uint8_t		SubUni;		// low universe (0-255)
+		uint8_t		Net;		// high universe (not used)
+		uint16_t	Length;		// data length (2 - 512)
+		uint8_t		Data[ DMX_MAX ];	// universe data
+	} __attribute__((packed));
+
+	uint8_t raw[ 18 + DMX_MAX ];
+
+} artnet_packet_t;
+
+///
+/// Implementation of the LedDevice interface for sending led colors via udp/E1.31 packets
+///
+class LedDeviceUdpArtNet : public ProviderUdp
+{
+public:
+	///
+	/// Constructs specific LedDevice
+	///
+	/// @param deviceConfig json device config
+	///
+	LedDeviceUdpArtNet(const QJsonObject &deviceConfig);
+
+	///
+	/// Sets configuration
+	///
+	/// @param deviceConfig the json device config
+	/// @return true if success
+	bool init(const QJsonObject &deviceConfig);
+
+	/// constructs leddevice
+	static LedDevice* construct(const QJsonObject &deviceConfig);
+
+
+private:
+	///
+	/// Writes the led color values to the led-device
+	///
+	/// @param ledValues The color-value per led
+	/// @return Zero on succes else negative
+	///
+	virtual int write(const std::vector<ColorRgb> &ledValues);
+
+	void prepare(const unsigned this_universe, const unsigned this_sequence, const unsigned this_dmxChannelCount);
+
+
+	artnet_packet_t artnet_packet;
+	uint8_t _artnet_seq = 1;
+	uint8_t _artnet_channelsPerFixture = 3;
+	unsigned _artnet_universe = 1;
+};