Proto server added for better performance of remote application using a binary protocol;

gpio2spi added which can be used to switch the GPIO pins into SPI mode if necessary;


Former-commit-id: 237f495289ce2f4afae49b36684f464937dbd30f

include/protoserver/ProtoServer.h

@@ -0,0 +1,59 @@
+#pragma once
+
+// system includes
+#include <cstdint>
+
+// Qt includes
+#include <QTcpServer>
+#include <QSet>
+
+// Hyperion includes
+#include <hyperion/Hyperion.h>
+
+class ProtoClientConnection;
+
+///
+/// This class creates a TCP server which accepts connections wich can then send
+/// in Protocol Buffer encoded commands. This interface to Hyperion is used by
+/// hyperion-remote to control the leds
+///
+class ProtoServer : public QObject
+{
+	Q_OBJECT
+
+public:
+	///
+	/// ProtoServer constructor
+	/// @param hyperion Hyperion instance
+	/// @param port port number on which to start listening for connections
+	///
+	ProtoServer(Hyperion * hyperion, uint16_t port = 19444);
+	~ProtoServer();
+
+	///
+	/// @return the port number on which this TCP listens for incoming connections
+	///
+	uint16_t getPort() const;
+
+private slots:
+	///
+	/// Slot which is called when a client tries to create a new connection
+	///
+	void newConnection();
+
+	///
+	/// Slot which is called when a client closes a connection
+	/// @param connection The Connection object which is being closed
+	///
+	void closedConnection(ProtoClientConnection * connection);
+
+private:
+	/// Hyperion instance
+	Hyperion * _hyperion;
+
+	/// The TCP server object
+	QTcpServer _server;
+
+	/// List with open connections
+	QSet<ProtoClientConnection *> _openConnections;
+};