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

libsrc/protoserver/ProtoClientConnection.h

@@ -0,0 +1,132 @@
+#pragma once
+
+// stl includes
+#include <string>
+
+// Qt includes
+#include <QByteArray>
+#include <QTcpSocket>
+
+// jsoncpp includes
+#include <json/json.h>
+
+// Hyperion includes
+#include <hyperion/Hyperion.h>
+
+// util includes
+#include <utils/jsonschema/JsonSchemaChecker.h>
+
+// proto includes
+#include "message.pb.h"
+
+class ImageProcessor;
+
+///
+/// The Connection object created by \a ProtoServer when a new connection is establshed
+///
+class ProtoClientConnection : public QObject
+{
+	Q_OBJECT
+
+public:
+	///
+	/// Constructor
+	/// @param socket The Socket object for this connection
+	/// @param hyperion The Hyperion server
+	///
+	ProtoClientConnection(QTcpSocket * socket, Hyperion * hyperion);
+
+	///
+	/// Destructor
+	///
+	~ProtoClientConnection();
+
+signals:
+	///
+	/// Signal which is emitted when the connection is being closed
+	/// @param connection This connection object
+	///
+	void connectionClosed(ProtoClientConnection * connection);
+
+private slots:
+	///
+	/// Slot called when new data has arrived
+	///
+	void readData();
+
+	///
+	/// Slot called when this connection is being closed
+	///
+	void socketClosed();
+
+private:
+	///
+	/// Handle an incoming Proto message
+	///
+	/// @param message the incoming message as string
+	///
+	void handleMessage(const proto::HyperionRequest &message);
+
+	///
+	/// Handle an incoming Proto Color message
+	///
+	/// @param message the incoming message
+	///
+	void handleColorCommand(const proto::ColorRequest & message);
+
+	///
+	/// Handle an incoming Proto Image message
+	///
+	/// @param message the incoming message
+	///
+	void handleImageCommand(const proto::ImageRequest & message);
+
+	///
+	/// Handle an incoming Proto Clear message
+	///
+	/// @param message the incoming message
+	///
+	void handleClearCommand(const proto::ClearRequest & message);
+
+	///
+	/// Handle an incoming Proto Clearall message
+	///
+	void handleClearallCommand();
+
+	///
+	/// Handle an incoming Proto message of unknown type
+	///
+	void handleNotImplemented();
+
+	///
+	/// Send a message to the connected client
+	///
+	/// @param message The Proto message to send
+	///
+	void sendMessage(const google::protobuf::Message &message);
+
+	///
+	/// Send a standard reply indicating success
+	///
+	void sendSuccessReply();
+
+	///
+	/// Send an error message back to the client
+	///
+	/// @param error String describing the error
+	///
+	void sendErrorReply(const std::string & error);
+
+private:
+	/// The TCP-Socket that is connected tot the Proto-client
+	QTcpSocket * _socket;
+
+	/// The processor for translating images to led-values
+	ImageProcessor * _imageProcessor;
+
+	/// Link to Hyperion for writing led-values to a priority channel
+	Hyperion * _hyperion;
+
+	/// The buffer used for reading data from the socket
+	QByteArray _receiveBuffer;
+};