Merge pull request #959 from m-seker/refactor/const_correctness

Const correctness, override keyword, a bunch of stuff..

include/blackborder/BlackBorderProcessor.h

@@ -25,7 +25,7 @@ namespace hyperion
 		Q_OBJECT
 	public:
 		BlackBorderProcessor(Hyperion* hyperion, QObject* parent);
-		~BlackBorderProcessor();
+		~BlackBorderProcessor() override;
 		///
 		/// Return the current (detected) border
 		/// @return The current border

include/boblightserver/BoblightServer.h

@@ -32,7 +32,7 @@ public:
 	/// @param port port number on which to start listening for connections
 	///
 	BoblightServer(Hyperion* hyperion, const QJsonDocument& config);
-	~BoblightServer();
+	~BoblightServer() override;
 
 	///
 	/// @return the port number on which this TCP listens for incoming connections
@@ -41,7 +41,7 @@ public:
 
 	/// @return true if server is active (bind to a port)
 	///
-	bool active();
+	bool active() const;
 
 public slots:
 	///

include/bonjour/bonjourservicebrowser.h

@@ -44,7 +44,7 @@ class BonjourServiceBrowser : public QObject
 	Q_OBJECT
 public:
 	BonjourServiceBrowser(QObject *parent = 0);
-	~BonjourServiceBrowser();
+	~BonjourServiceBrowser() override;
 	void browseForServiceType(const QString &serviceType);
 	inline QList<BonjourRecord> currentRecords() const { return bonjourRecords; }
 	inline QString serviceType() const { return browsingType; }

include/bonjour/bonjourserviceregister.h

@@ -45,13 +45,13 @@ class BonjourServiceRegister : public QObject
     Q_OBJECT
 public:
     BonjourServiceRegister(QObject *parent = 0);
-    ~BonjourServiceRegister();
+    ~BonjourServiceRegister() override;
 
-	void registerService(const QString& service, int port);
+    void registerService(const QString& service, int port);
-    void registerService(const BonjourRecord &record, quint16 servicePort, std::vector<std::pair<std::string, std::string>> txt = std::vector<std::pair<std::string, std::string>>());
+    void registerService(const BonjourRecord &record, quint16 servicePort, const std::vector<std::pair<std::string, std::string>>& txt = {});
-    inline BonjourRecord registeredRecord() const {return finalRecord; }
+    inline BonjourRecord registeredRecord() const { return finalRecord; }
 
-	quint16 getPort() const { return _port; };
+    quint16 getPort() const { return _port; }
 
 signals:
     void error(DNSServiceErrorType error);
@@ -69,8 +69,8 @@ private:
     QSocketNotifier *bonjourSocket;
     BonjourRecord finalRecord;
 
-	// current port
+    // current port
-	quint16 _port = 0;
+    quint16 _port = 0;
 };
 
 #endif // BONJOURSERVICEREGISTER_H

include/bonjour/bonjourserviceresolver.h

@@ -44,8 +44,8 @@ class BonjourServiceResolver : public QObject
 {
 	Q_OBJECT
 public:
-	BonjourServiceResolver(QObject *parent);
+    BonjourServiceResolver(QObject *parent);
-    ~BonjourServiceResolver();
+    ~BonjourServiceResolver() override;
 
     bool resolveBonjourRecord(const BonjourRecord &record);
 

include/commandline/ColorOption.h

@@ -12,6 +12,7 @@ class ColorOption: public Option
 {
 protected:
     QColor _color;
+
 public:
     ColorOption(const QString &name,
                 const QString &description = QString(),
@@ -31,9 +32,8 @@ public:
         : Option(other)
     {}
 
-    virtual bool validate(Parser & parser, QString & value) override;
+    bool validate(Parser & parser, QString & value) override;
-    QColor getColor(Parser &parser)
+    QColor getColor(Parser &parser) const { return _color; }
-    { return _color; }
 };
 
 }

include/commandline/ColorsOption.h

@@ -12,6 +12,7 @@ class ColorsOption: public Option
 {
 protected:
     QList<QColor> _colors;
+
 public:
     ColorsOption(const QString &name,
                  const QString &description = QString(),
@@ -20,6 +21,7 @@ public:
     )
         : Option(name, description, valueName, defaultValue)
     {}
+
     ColorsOption(const QStringList &names,
                  const QString &description = QString(),
                  const QString &valueName = QString(),
@@ -27,13 +29,13 @@ public:
     )
         : Option(names, description, valueName, defaultValue)
     {}
+
     ColorsOption(const QCommandLineOption &other)
         : Option(other)
     {}
 
     virtual bool validate(Parser & parser, QString & value) override;
-    QList<QColor> &getColors(Parser &parser)
+    QList<QColor> getColors(Parser &parser) const { return _colors; }
-    { return _colors; }
 };
 
 }

include/commandline/ImageOption.h

@@ -12,6 +12,7 @@ class ImageOption: public Option
 {
 protected:
     QImage _image;
+
 public:
     ImageOption(const QString &name,
                 const QString &description = QString(),
@@ -20,6 +21,7 @@ public:
     )
         : Option(name, description, valueName, defaultValue)
     {}
+
     ImageOption(const QStringList &names,
                 const QString &description = QString(),
                 const QString &valueName = QString(),
@@ -27,13 +29,13 @@ public:
     )
         : Option(names, description, valueName, defaultValue)
     {}
+
     ImageOption(const QCommandLineOption &other)
         : Option(other)
     {}
 
-    virtual bool validate(Parser & parser, QString & value) override;
+    bool validate(Parser & parser, QString & value) override;
-    QImage &getImage(Parser &parser)
+    QImage& getImage(Parser &parser) { return _image; }
-    { return _image; }
 };
 
 }

include/commandline/IntOption.h

@@ -12,6 +12,7 @@ class IntOption: public ValidatorOption
 {
 protected:
     int _int;
+
 public:
     IntOption(const QString &name,
               const QString &description = QString(),
@@ -19,18 +20,26 @@ public:
               const QString &defaultValue = QString(),
               int minimum = std::numeric_limits<int>::min(), int maximum = std::numeric_limits<int>::max())
         : ValidatorOption(name, description, valueName, defaultValue)
-    { setValidator(new QIntValidator(minimum, maximum)); }
+    {
+        setValidator(new QIntValidator(minimum, maximum));
+    }
+
     IntOption(const QStringList &names,
               const QString &description = QString(),
               const QString &valueName = QString(),
               const QString &defaultValue = QString(),
               int minimum = std::numeric_limits<int>::min(), int maximum = std::numeric_limits<int>::max())
         : ValidatorOption(names, description, valueName, defaultValue)
-    { setValidator(new QIntValidator(minimum, maximum)); }
+    {
+        setValidator(new QIntValidator(minimum, maximum));
+    }
+
     IntOption(const QCommandLineOption &other,
               int minimum = std::numeric_limits<int>::min(), int maximum = std::numeric_limits<int>::max())
         : ValidatorOption(other)
-    { setValidator(new QIntValidator(minimum, maximum)); }
+    {
+        setValidator(new QIntValidator(minimum, maximum));
+    }
 
     int getInt(Parser &parser, bool *ok = 0, int base = 10);
     int *getIntPtr(Parser &parser, bool *ok = 0, int base = 10);

include/commandline/Option.h

@@ -26,13 +26,12 @@ public:
 	);
 
 	Option(const QCommandLineOption &other);
-	virtual ~Option() = default;
 
 	virtual bool validate(Parser &parser, QString &value);
-	QString name();
+	QString name() const;
-	QString getError();
+	QString getError() const;
-	QString value(Parser &parser);
+	QString value(Parser &parser) const;
-	const char* getCString(Parser &parser);
+	const char* getCString(Parser &parser) const;
 
 protected:
 	QString _error;

include/commandline/Parser.h

@@ -93,9 +93,10 @@ public:
 		return *option;
 	}
 
-	Parser(QString description=QString())
+	Parser(const QString& description = QString())
 	{
-		if(description.size())setApplicationDescription(description);
+		if(description.size())
+			setApplicationDescription(description);
 	};
 
 	QCommandLineOption addHelpOption()
@@ -116,53 +117,84 @@ public:
 	};
 
 	QString applicationDescription() const
-	{ return _parser.applicationDescription(); }
+	{
+		return _parser.applicationDescription();
+	}
 
 	void clearPositionalArguments()
-	{ _parser.clearPositionalArguments(); }
+	{
+		_parser.clearPositionalArguments();
+	}
 
 	QString helpText() const
-	{ return _parser.helpText(); }
+	{
+		return _parser.helpText();
+	}
 
 	bool isSet(const QString &name) const
-	{ return _parser.isSet(name); }
+	{
+		return _parser.isSet(name);
+	}
 
 	bool isSet(const Option &option) const
-	{ return _parser.isSet(option); }
+	{
+		return _parser.isSet(option);
+	}
 
 	bool isSet(const Option *option) const
-	{ return _parser.isSet(*option); }
+	{
+		return _parser.isSet(*option);
+	}
 
 	QStringList optionNames() const
-	{ return _parser.optionNames(); }
+	{
+		return _parser.optionNames();
+	}
 
 	QStringList positionalArguments() const
-	{ return _parser.positionalArguments(); }
+	{
+		return _parser.positionalArguments();
+	}
 
 	void setApplicationDescription(const QString &description)
-	{ _parser.setApplicationDescription(description); }
+	{
+		_parser.setApplicationDescription(description);
+	}
 
 	void setSingleDashWordOptionMode(QCommandLineParser::SingleDashWordOptionMode singleDashWordOptionMode)
-	{ _parser.setSingleDashWordOptionMode(singleDashWordOptionMode); }
+	{
+		_parser.setSingleDashWordOptionMode(singleDashWordOptionMode);
+	}
 
 	void showHelp(int exitCode = 0)
-	{ _parser.showHelp(exitCode); }
+	{
+		_parser.showHelp(exitCode);
+	}
 
 	QStringList unknownOptionNames() const
-	{ return _parser.unknownOptionNames(); }
+	{
+		return _parser.unknownOptionNames();
+	}
 
 	QString value(const QString &optionName) const
-	{ return _parser.value(optionName); }
+	{
+		return _parser.value(optionName);
+	}
 
 	QString value(const Option &option) const
-	{ return _parser.value(option); }
+	{
+		return _parser.value(option);
+	}
 
 	QStringList values(const QString &optionName) const
-	{ return _parser.values(optionName); }
+	{
+		return _parser.values(optionName);
+	}
 
 	QStringList values(const Option &option) const
-	{ return _parser.values(option); }
+	{
-
+		return _parser.values(option);
+	}
 };
 
 }

include/commandline/RegularExpressionOption.h

@@ -17,12 +17,14 @@ public:
                             const QString &defaultValue = QString())
         : ValidatorOption(name, description, valueName, defaultValue)
     {}
+
     RegularExpressionOption(const QStringList &names,
                             const QString &description = QString(),
                             const QString &valueName = QString(),
                             const QString &defaultValue = QString())
         : ValidatorOption(names, description, valueName, defaultValue)
     {}
+
     RegularExpressionOption(const QCommandLineOption &other)
         : ValidatorOption(other)
     {}
@@ -33,18 +35,26 @@ public:
                             const QString &defaultValue = QString(),
                             const QRegularExpression &expression = QRegularExpression())
         : ValidatorOption(name, description, valueName, defaultValue)
-    { setValidator(new QRegularExpressionValidator(expression)); }
+    {
+        setValidator(new QRegularExpressionValidator(expression));
+    }
+
     RegularExpressionOption(const QStringList &names,
                             const QString &description = QString(),
                             const QString &valueName = QString(),
                             const QString &defaultValue = QString(),
                             const QRegularExpression &expression = QRegularExpression())
         : ValidatorOption(names, description, valueName, defaultValue)
-    { setValidator(new QRegularExpressionValidator(expression)); }
+    {
+        setValidator(new QRegularExpressionValidator(expression));
+    }
+
     RegularExpressionOption(const QCommandLineOption &other,
                             const QRegularExpression &expression = QRegularExpression())
         : ValidatorOption(other)
-    { setValidator(new QRegularExpressionValidator(expression)); }
+    {
+        setValidator(new QRegularExpressionValidator(expression));
+    }
 
     RegularExpressionOption(const QString &name,
                             const QString &description = QString(),
@@ -52,18 +62,26 @@ public:
                             const QString &defaultValue = QString(),
                             const QString &expression = QString())
         : ValidatorOption(name, description, valueName, defaultValue)
-    { setValidator(new QRegularExpressionValidator(QRegularExpression(expression))); }
+    {
+        setValidator(new QRegularExpressionValidator(QRegularExpression(expression)));
+    }
+
     RegularExpressionOption(const QStringList &names,
                             const QString &description = QString(),
                             const QString &valueName = QString(),
                             const QString &defaultValue = QString(),
                             const QString &expression = QString())
         : ValidatorOption(names, description, valueName, defaultValue)
-    { setValidator(new QRegularExpressionValidator(QRegularExpression(expression))); }
+    {
+        setValidator(new QRegularExpressionValidator(QRegularExpression(expression)));
+    }
+
     RegularExpressionOption(const QCommandLineOption &other,
                             const QString &expression = QString())
         : ValidatorOption(other)
-    { setValidator(new QRegularExpressionValidator(QRegularExpression(expression))); }
+    {
+        setValidator(new QRegularExpressionValidator(QRegularExpression(expression)));
+    }
 };
 
 }

include/commandline/SwitchOption.h

@@ -30,8 +30,6 @@ public:
 		: Option(other), _switches(switches)
 	{}
 
-	virtual ~SwitchOption() {}
-
 	const QMap<QString, T> &getSwitches() const                      { return _switches; }
 	virtual bool validate(Parser &parser, QString &switch_) override { return hasSwitch(switch_); }
 	bool hasSwitch(const QString &switch_)                           { return _switches.contains(switch_.toLower()); }

include/commandline/ValidatorOption.h

@@ -13,6 +13,7 @@ class ValidatorOption: public Option
 protected:
     const QValidator *validator;
     virtual void setValidator(const QValidator *validator);
+
 public:
     ValidatorOption(const QString &name,
                     const QString &description = QString(),
@@ -21,6 +22,7 @@ public:
                     const QValidator *validator = nullptr)
         : Option(name, description, valueName, defaultValue), validator(validator)
     {}
+
     ValidatorOption(const QStringList &names,
                     const QString &description = QString(),
                     const QString &valueName = QString(),
@@ -28,6 +30,7 @@ public:
                     const QValidator *validator = nullptr)
         : Option(names, description, valueName, defaultValue), validator(validator)
     {}
+
     ValidatorOption(const QCommandLineOption &other,
                     const QValidator *validator = nullptr)
         : Option(other), validator(validator)

include/db/AuthTable.h

@@ -29,7 +29,6 @@ public:
 		// create table columns
 		createTable(QStringList()<<"user TEXT"<<"password BLOB"<<"token BLOB"<<"salt BLOB"<<"comment TEXT"<<"id TEXT"<<"created_at TEXT"<<"last_use TEXT");
 	};
-	~AuthTable(){};
 
 	///
 	/// @brief      Create a user record, if called on a existing user the auth is recreated

include/db/DBManager.h

@@ -27,7 +27,7 @@ class DBManager : public QObject
 
 public:
 	DBManager(QObject* parent = nullptr);
-	~DBManager();
+	~DBManager() override;
 
 	/// set root path
 	void setRootPath(const QString& rootPath);

include/db/InstanceTable.h

@@ -27,9 +27,7 @@ public:
 
 		// start/create the first Hyperion instance index 0
 		createInstance();
-
 	};
-	~InstanceTable(){};
 
 	///
 	/// @brief Create a new Hyperion instance entry, the name needs to be unique

include/db/MetaTable.h

@@ -23,13 +23,12 @@ public:
 		setTable("meta");
 		createTable(QStringList()<<"uuid TEXT"<<"created_at TEXT");
 	};
-	~MetaTable(){};
 
 	///
 	/// @brief Get the uuid, if the uuid is not set it will be created
 	/// @return The uuid
 	///
-	inline const QString getUUID()
+	inline QString getUUID() const
 	{
 		QVector<QVariantMap> results;
 		getRecords(results, QStringList() << "uuid");

include/db/SettingsTable.h

@@ -23,7 +23,6 @@ public:
 		// create table columns
 		createTable(QStringList()<<"type TEXT"<<"config TEXT"<<"hyperion_inst INTEGER"<<"updated_at TEXT");
 	};
-	~SettingsTable(){};
 
 	///
 	/// @brief      Create or update a settings record

include/effectengine/Effect.h

@@ -38,23 +38,23 @@ public:
 				, const QJsonObject &args = QJsonObject()
 				, const QString &imageData = ""
 	);
-	virtual ~Effect();
+	~Effect() override;
 
-	virtual void run();
+	void run() override;
 
-	int getPriority() const { return _priority; };
+	int getPriority() const { return _priority; }
 
 	///
 	/// @brief Set manual interuption to true,
 	///        Note: DO NOT USE QThread::interuption!
 	///
-	void requestInterruption() { _interupt = true; };
+	void requestInterruption() { _interupt = true; }
 
 	///
 	/// @brief Check if the interuption flag has been set
 	/// @return    The flag state
 	///
-	bool isInterruptionRequested() { return _interupt; };
+	bool isInterruptionRequested() { return _interupt; }
 
 	QString getScript() const { return _script; }
 	QString getName() const { return _name; }

include/effectengine/EffectEngine.h

@@ -27,17 +27,17 @@ class EffectEngine : public QObject
 
 public:
 	EffectEngine(Hyperion * hyperion);
-	virtual ~EffectEngine();
+	~EffectEngine() override;
 
-	const std::list<EffectDefinition> & getEffects() const { return _availableEffects; };
+	std::list<EffectDefinition> getEffects() const { return _availableEffects; }
 
-	const std::list<ActiveEffectDefinition> & getActiveEffects();
+	std::list<ActiveEffectDefinition> getActiveEffects() const;
 
 	///
 	/// Get available schemas from EffectFileHandler
 	/// @return all schemas
 	///
-	const std::list<EffectSchema> & getEffectSchemas();
+	std::list<EffectSchema> getEffectSchemas() const;
 
 	///
 	/// @brief Save an effect with EffectFileHandler
@@ -115,8 +115,6 @@ private:
 
 	std::list<Effect *> _activeEffects;
 
-	std::list<ActiveEffectDefinition> _availableActiveEffects;
-
 	std::list<ActiveEffectDefinition> _cachedActiveEffects;
 
 	Logger * _log;

include/effectengine/EffectFileHandler.h

@@ -20,12 +20,12 @@ public:
 	///
 	/// @brief Get all available effects
 	///
-	const std::list<EffectDefinition> & getEffects() const { return _availableEffects; };
+	std::list<EffectDefinition> getEffects() const { return _availableEffects; }
 
 	///
 	/// @brief Get all available schemas
 	///
-	const std::list<EffectSchema> & getEffectSchemas() { return _effectSchemas; };
+	std::list<EffectSchema> getEffectSchemas() const { return _effectSchemas; }
 
 	///
 	/// @brief Save an effect

include/flatbufserver/FlatBufferConnection.h

@@ -40,7 +40,7 @@ public:
 	///
 	/// @brief Destructor
 	///
-	~FlatBufferConnection();
+	~FlatBufferConnection() override;
 
 	/// @brief Do not read reply messages from Hyperion if set to true
 	void setSkipReply(bool skip);

include/flatbufserver/FlatBufferServer.h

@@ -21,7 +21,7 @@ class FlatBufferServer : public QObject
 	Q_OBJECT
 public:
 	FlatBufferServer(const QJsonDocument& config, QObject* parent = nullptr);
-	~FlatBufferServer();
+	~FlatBufferServer() override;
 
 public slots:
 	///

include/grabber/V4L2Grabber.h

@@ -62,13 +62,13 @@ public:
 	);
 	~V4L2Grabber() override;
 
-	QRectF getSignalDetectionOffset()
+	QRectF getSignalDetectionOffset() const
 	{
 		return QRectF(_x_frac_min, _y_frac_min, _x_frac_max, _y_frac_max);
 	}
 
-	bool getSignalDetectionEnabled() { return _signalDetectionEnabled; }
+	bool getSignalDetectionEnabled() const { return _signalDetectionEnabled; }
-	bool getCecDetectionEnabled() { return _cecDetectionEnabled; }
+	bool getCecDetectionEnabled() const { return _cecDetectionEnabled; }
 
 	int grabFrame(Image<ColorRgb> &);
 
@@ -128,27 +128,27 @@ public:
 	///
 	/// @brief overwrite Grabber.h implementation
 	///
-	QStringList getV4L2devices() override;
+	QStringList getV4L2devices() const override;
 
 	///
 	/// @brief overwrite Grabber.h implementation
 	///
-	QString getV4L2deviceName(QString devicePath) override;
+	QString getV4L2deviceName(const QString& devicePath) const override;
 
 	///
 	/// @brief overwrite Grabber.h implementation
 	///
-	QMultiMap<QString, int> getV4L2deviceInputs(QString devicePath) override;
+	QMultiMap<QString, int> getV4L2deviceInputs(const QString& devicePath) const override;
 
 	///
 	/// @brief overwrite Grabber.h implementation
 	///
-	QStringList getResolutions(QString devicePath) override;
+	QStringList getResolutions(const QString& devicePath) const override;
 
 	///
 	/// @brief overwrite Grabber.h implementation
 	///
-	QStringList getFramerates(QString devicePath) override;
+	QStringList getFramerates(const QString& devicePath) const override;
 
 public slots:
 
@@ -169,6 +169,7 @@ private:
 	void getV4Ldevices();
 
 	bool init();
+
 	void uninit();
 
 	bool open_device();
@@ -250,12 +251,13 @@ private:
 
 private:
 	QString _deviceName;
-	std::map<QString, QString>						_v4lDevices;
+	std::map<QString, QString> _v4lDevices;
-	QMap<QString, V4L2Grabber::DeviceProperties>	_deviceProperties;
+	QMap<QString, V4L2Grabber::DeviceProperties> _deviceProperties;
-	VideoStandard									_videoStandard;
+
-	io_method										_ioMethod;
+	VideoStandard       _videoStandard;
-	int												_fileDescriptor;
+	io_method           _ioMethod;
-	std::vector<buffer>								_buffers;
+	int                 _fileDescriptor;
+	std::vector<buffer> _buffers;
 
 	PixelFormat _pixelFormat;
 	int         _pixelDecimation;

include/grabber/V4L2Wrapper.h

@@ -18,8 +18,8 @@ public:
 			int pixelDecimation );
 	~V4L2Wrapper() override;
 
-	bool getSignalDetectionEnable();
+	bool getSignalDetectionEnable() const;
-	bool getCecDetectionEnable();
+	bool getCecDetectionEnable() const;
 
 public slots:
 	bool start() override;
@@ -30,7 +30,7 @@ public slots:
 	void setSignalDetectionOffset(double verticalMin, double horizontalMin, double verticalMax, double horizontalMax);
 	void setSignalDetectionEnable(bool enable);
 	void setCecDetectionEnable(bool enable);
-	void setDeviceVideoStandard(QString device, VideoStandard videoStandard);
+	void setDeviceVideoStandard(const QString& device, VideoStandard videoStandard);
 	void handleCecEvent(CECEvent event);
 	void handleSettingsUpdate(settings::type type, const QJsonDocument& config) override;
 

include/grabber/VideoStandard.h

@@ -10,20 +10,20 @@ enum class VideoStandard {
 	NO_CHANGE
 };
 
-inline VideoStandard parseVideoStandard(QString videoStandard)
+inline VideoStandard parseVideoStandard(const QString& videoStandard)
 {
 	// convert to lower case
-	videoStandard = videoStandard.toLower();
+	QString standard = videoStandard.toLower();
 
-	if (videoStandard == "pal")
+	if (standard == "pal")
 	{
 		return VideoStandard::PAL;
 	}
-	else if (videoStandard == "ntsc")
+	else if (standard == "ntsc")
 	{
 		return VideoStandard::NTSC;
 	}
-	else if (videoStandard == "secam")
+	else if (standard == "secam")
 	{
 		return VideoStandard::SECAM;
 	}

include/hyperion/AuthManager.h

@@ -38,25 +38,25 @@ public:
 	/// @brief Get the unique id (imported from removed class 'Stats')
 	/// @return The unique id
 	///
-	const QString &getID() const { return _uuid; };
+	QString getID() const { return _uuid; }
 
 	///
 	/// @brief Check authorization is required according to the user setting
 	/// @return       True if authorization required else false
 	///
-	bool isAuthRequired() const { return _authRequired; };
+	bool isAuthRequired() const { return _authRequired; }
 
 	///
 	/// @brief Check if authorization is required for local network connections
 	/// @return       True if authorization required else false
 	///
-	bool isLocalAuthRequired() const { return _localAuthRequired; };
+	bool isLocalAuthRequired() const { return _localAuthRequired; }
 
 	///
 	/// @brief Check if authorization is required for local network connections for admin access
 	/// @return       True if authorization required else false
 	///
-	bool isLocalAdminAuthRequired() const { return _localAdminAuthRequired; };
+	bool isLocalAdminAuthRequired() const { return _localAdminAuthRequired; }
 
 	///
 	/// @brief Reset Hyperion user
@@ -68,18 +68,18 @@ public:
 	/// @brief Check if user auth is temporary blocked due to failed attempts
 	/// @return True on blocked and no further Auth requests will be accepted
 	///
-	bool isUserAuthBlocked() { return (_userAuthAttempts.length() >= 10); };
+	bool isUserAuthBlocked() const { return (_userAuthAttempts.length() >= 10); }
 
 	///
 	/// @brief Check if token auth is temporary blocked due to failed attempts
 	/// @return True on blocked and no further Auth requests will be accepted
 	///
-	bool isTokenAuthBlocked() { return (_tokenAuthAttempts.length() >= 25); };
+	bool isTokenAuthBlocked() const { return (_tokenAuthAttempts.length() >= 25); }
 
 	/// Pointer of this instance
 	static AuthManager *manager;
 	/// Get Pointer of this instance
-	static AuthManager *getInstance() { return manager; };
+	static AuthManager *getInstance() { return manager; }
 
 public slots:
 
@@ -164,19 +164,19 @@ public slots:
 	/// @brief Get pending requests
 	/// @return       All pending requests
 	///
-	QVector<AuthManager::AuthDefinition> getPendingRequests();
+	QVector<AuthManager::AuthDefinition> getPendingRequests() const;
 
 	///
 	/// @brief Get the current valid token for user. Make sure this call is allowed!
 	/// @param usr the defined user
 	/// @return       The token
 	///
-	const QString getUserToken(const QString &usr = "Hyperion");
+	QString getUserToken(const QString &usr = "Hyperion") const;
 
 	///
 	/// @brief Get all available token entries
 	///
-	QVector<AuthManager::AuthDefinition> getTokenList();
+	QVector<AuthManager::AuthDefinition> getTokenList() const;
 
 	///
 	/// @brief Handle settings update from Hyperion Settingsmanager emit

include/hyperion/ComponentRegister.h

@@ -20,7 +20,7 @@ class ComponentRegister : public QObject
 
 public:
 	ComponentRegister(Hyperion* hyperion);
-	~ComponentRegister();
+	~ComponentRegister() override;
 
 	///
 	/// @brief  Check if a component is currently enabled
@@ -30,7 +30,7 @@ public:
 	int isComponentEnabled(hyperion::Components comp) const;
 
 	/// contains all components and their state
-	std::map<hyperion::Components, bool> getRegister() const { return _componentStates; };
+	std::map<hyperion::Components, bool> getRegister() const { return _componentStates; }
 
 signals:
 	///

include/hyperion/Grabber.h

@@ -22,7 +22,7 @@ class Grabber : public QObject
 	Q_OBJECT
 
 public:
-	Grabber(QString grabberName = "", int width=0, int height=0, int cropLeft=0, int cropRight=0, int cropTop=0, int cropBottom=0);
+	Grabber(const QString& grabberName = "", int width=0, int height=0, int cropLeft=0, int cropRight=0, int cropTop=0, int cropBottom=0);
 
 	///
 	/// Set the video mode (2D/3D)
@@ -119,35 +119,35 @@ public:
 	/// @brief Get a list of all available V4L devices
 	/// @return List of all available V4L devices on success else empty List
 	///
-	virtual QStringList getV4L2devices() { return QStringList(); }
+	virtual QStringList getV4L2devices() const { return QStringList(); }
 
 	///
 	/// @brief Get the V4L device name
 	/// @param devicePath The device path
 	/// @return The name of the V4L device on success else empty String
 	///
-	virtual QString getV4L2deviceName(QString devicePath) { return QString(); }
+	virtual QString getV4L2deviceName(const QString& /*devicePath*/) const { return QString(); }
 
 	///
 	/// @brief Get a name/index pair of supported device inputs
 	/// @param devicePath The device path
 	/// @return multi pair of name/index on success else empty pair
 	///
-	virtual QMultiMap<QString, int> getV4L2deviceInputs(QString devicePath) { return QMultiMap<QString, int>(); }
+	virtual QMultiMap<QString, int> getV4L2deviceInputs(const QString& /*devicePath*/) const { return QMultiMap<QString, int>(); }
 
 	///
 	/// @brief Get a list of supported device resolutions
 	/// @param devicePath The device path
 	/// @return List of resolutions on success else empty List
 	///
-	virtual QStringList getResolutions(QString devicePath) { return QStringList(); }
+	virtual QStringList getResolutions(const QString& /*devicePath*/) const { return QStringList(); }
 
 	///
 	/// @brief Get a list of supported device framerates
 	/// @param devicePath The device path
 	/// @return List of framerates on success else empty List
 	///
-	virtual QStringList getFramerates(QString devicePath) { return QStringList(); }
+	virtual QStringList getFramerates(const QString& devicePath) const { return QStringList(); }
 
 protected:
 	ImageResampler _imageResampler;

include/hyperion/GrabberWrapper.h

@@ -29,9 +29,9 @@ class GrabberWrapper : public QObject
 {
 	Q_OBJECT
 public:
-	GrabberWrapper(QString grabberName, Grabber * ggrabber, unsigned width, unsigned height, unsigned updateRate_Hz = 0);
+	GrabberWrapper(const QString& grabberName, Grabber * ggrabber, unsigned width, unsigned height, unsigned updateRate_Hz = 0);
 
-	virtual ~GrabberWrapper();
+	~GrabberWrapper() override;
 
 	static GrabberWrapper* instance;
 	static GrabberWrapper* getInstance(){ return instance; }
@@ -60,35 +60,35 @@ public:
 	/// @brief Get a list of all available V4L devices
 	/// @return List of all available V4L devices on success else empty List
 	///
-	virtual QStringList getV4L2devices();
+	virtual QStringList getV4L2devices() const;
 
 	///
 	/// @brief Get the V4L device name
 	/// @param devicePath The device path
 	/// @return The name of the V4L device on success else empty String
 	///
-	virtual QString getV4L2deviceName(QString devicePath);
+	virtual QString getV4L2deviceName(const QString& devicePath) const;
 
 	///
 	/// @brief Get a name/index pair of supported device inputs
 	/// @param devicePath The device path
 	/// @return multi pair of name/index on success else empty pair
 	///
-	virtual QMultiMap<QString, int> getV4L2deviceInputs(QString devicePath);
+	virtual QMultiMap<QString, int> getV4L2deviceInputs(const QString& devicePath) const;
 
 	///
 	/// @brief Get a list of supported device resolutions
 	/// @param devicePath The device path
 	/// @return List of resolutions on success else empty List
 	///
-	virtual QStringList getResolutions(QString devicePath);
+	virtual QStringList getResolutions(const QString& devicePath) const;
 
 	///
 	/// @brief Get a list of supported device framerates
 	/// @param devicePath The device path
 	/// @return List of framerates on success else empty List
 	///
-	virtual QStringList getFramerates(QString devicePath);
+	virtual QStringList getFramerates(const QString& devicePath) const;
 
 	static QStringList availableGrabbers();
 

include/hyperion/Hyperion.h

@@ -168,7 +168,7 @@ public slots:
 	/// Returns the list with unique adjustment identifiers
 	/// @return The list with adjustment identifiers
 	///
-	const QStringList & getAdjustmentIds() const;
+	QStringList getAdjustmentIds() const;
 
 	///
 	/// Returns the ColorAdjustment with the given identifier
@@ -233,15 +233,15 @@ public slots:
 
 	/// Get the list of available effects
 	/// @return The list of available effects
-	const std::list<EffectDefinition> &getEffects() const;
+	std::list<EffectDefinition> getEffects() const;
 
 	/// Get the list of active effects
 	/// @return The list of active effects
-	const std::list<ActiveEffectDefinition> &getActiveEffects() const;
+	std::list<ActiveEffectDefinition> getActiveEffects() const;
 
 	/// Get the list of available effect schema files
 	/// @return The list of available effect schema files
-	const std::list<EffectSchema> &getEffectSchemas() const;
+	std::list<EffectSchema> getEffectSchemas() const;
 
 	/// #############
 	/// PRIORITYMUXER
@@ -266,7 +266,7 @@ public slots:
 
 	/// gets current state of automatic/priorized source selection
 	/// @return the state
-	bool sourceAutoSelectEnabled();
+	bool sourceAutoSelectEnabled() const;
 
 	///
 	/// Returns the current priority
@@ -309,7 +309,7 @@ public slots:
 
 	/// gets the current json config object from SettingsManager
 	/// @return json config
-	const QJsonObject& getQJsonConfig() const;
+	QJsonObject getQJsonConfig() const;
 
 	///
 	/// @brief Save a complete json config
@@ -317,7 +317,7 @@ public slots:
 	/// @param correct If true will correct json against schema before save
 	/// @return        True on success else false
 	///
-	bool saveSettings(QJsonObject config, bool correct = false);
+	bool saveSettings(const QJsonObject& config, bool correct = false);
 
 	/// ############
 	/// COMPONENTREGISTER
@@ -345,7 +345,7 @@ public slots:
 	/// @param The component to test
 	/// @return Component state
 	///
-	int isComponentEnabled(hyperion::Components comp);
+	int isComponentEnabled(hyperion::Components comp) const;
 
 	/// sets the methode how image is maped to leds at ImageProcessor
 	void setLedMappingType(int mappingType);
@@ -402,10 +402,10 @@ signals:
 	void forwardJsonMessage(QJsonObject);
 
 	/// Signal which is emitted, when a new system proto image should be forwarded
-	void forwardSystemProtoMessage(const QString, const Image<ColorRgb>);
+	void forwardSystemProtoMessage(const QString&, const Image<ColorRgb>&);
 
 	/// Signal which is emitted, when a new V4l proto image should be forwarded
-	void forwardV4lProtoMessage(const QString, const Image<ColorRgb>);
+	void forwardV4lProtoMessage(const QString&, const Image<ColorRgb>&);
 
 	///
 	/// @brief Is emitted from clients who request a videoMode change

include/hyperion/HyperionIManager.h

@@ -38,7 +38,7 @@ public slots:
 	/// @param inst  The instance to check
 	/// @return  True when running else false
 	///
-	bool IsInstanceRunning(quint8 inst) { return _runningInstances.contains(inst); }
+	bool IsInstanceRunning(quint8 inst) const { return _runningInstances.contains(inst); }
 
 	///
 	/// @brief Get a Hyperion instance by index
@@ -50,7 +50,7 @@ public slots:
 	///
 	/// @brief Get instance data of all instaces in db + running state
 	///
-	const QVector<QVariantMap> getInstanceData();
+	QVector<QVariantMap> getInstanceData() const;
 
 	///
 	/// @brief Start a Hyperion instance
@@ -172,7 +172,7 @@ private:
 	/// @brief check if a instance is allowed for management. Instance 0 represents the root instance
 	/// @apram inst The instance to check
 	///
-	bool isInstAllowed(quint8 inst) { return (inst > 0); }
+	bool isInstAllowed(quint8 inst) const { return (inst > 0); }
 
 private:
 	Logger* _log;

include/hyperion/ImageProcessor.h

@@ -36,7 +36,7 @@ public:
 	///
 	ImageProcessor(const LedString& ledString, Hyperion* hyperion);
 
-	~ImageProcessor();
+	~ImageProcessor() override;
 
 	///
 	/// Specifies the width and height of 'incomming' images. This will resize the buffer-image to
@@ -54,15 +54,15 @@ public:
 	void setLedString(const LedString& ledString);
 
 	/// Returns starte of black border detector
-	bool blackBorderDetectorEnabled();
+	bool blackBorderDetectorEnabled() const;
 
 	/// Returns the current _userMappingType, this may not be the current applied type!
-	int getUserLedMappingType() { return _userMappingType; };
+	int getUserLedMappingType() const { return _userMappingType; }
 
 	/// Returns the current _mappingType
-	int ledMappingType() { return _mappingType; };
+	int ledMappingType() const { return _mappingType; }
 
-	static int mappingTypeToInt(QString mappingType);
+	static int mappingTypeToInt(const QString& mappingType);
 	static QString mappingTypeToStr(int mappingType);
 
 	///

include/hyperion/ImageToLedsMap.h

@@ -57,8 +57,8 @@ namespace hyperion
 		///
 		unsigned height() const;
 
-		unsigned horizontalBorder() { return _horizontalBorder; };
+		unsigned horizontalBorder() const { return _horizontalBorder; }
-		unsigned verticalBorder() { return _verticalBorder; };
+		unsigned verticalBorder() const { return _verticalBorder; }
 
 		///
 		/// Determines the mean color for each led using the mapping the image given

include/hyperion/LedString.h

@@ -20,7 +20,7 @@ enum class ColorOrder
 	ORDER_RGB, ORDER_RBG, ORDER_GRB, ORDER_BRG, ORDER_GBR, ORDER_BGR
 };
 
-inline QString colorOrderToString(const ColorOrder colorOrder)
+inline QString colorOrderToString(ColorOrder colorOrder)
 {
 	switch (colorOrder)
 	{

include/hyperion/MessageForwarder.h

@@ -34,10 +34,10 @@ class MessageForwarder : public QObject
 	Q_OBJECT
 public:
 	MessageForwarder(Hyperion* hyperion);
-	~MessageForwarder();
+	~MessageForwarder() override;
 
-	void addJsonSlave(QString slave);
+	void addJsonSlave(const QString& slave);
-	void addFlatbufferSlave(QString slave);
+	void addFlatbufferSlave(const QString& slave);
 
 private slots:
 	///

include/hyperion/MultiColorAdjustment.h

@@ -26,7 +26,7 @@ public:
 	 */
 	void addAdjustment(ColorAdjustment * adjustment);
 
-	void setAdjustmentForLed(const QString& id, const unsigned startLed, unsigned endLed);
+	void setAdjustmentForLed(const QString& id, unsigned startLed, unsigned endLed);
 
 	bool verifyAdjustments() const;
 
@@ -36,7 +36,7 @@ public:
 	/// Returns the identifier of all the unique ColorAdjustment
 	///
 	/// @return The list with unique id's of the ColorAdjustment
-	const QStringList & getAdjustmentIds();
+	QStringList getAdjustmentIds() const;
 
 	///
 	/// Returns the pointer to the ColorAdjustment with the given id

include/hyperion/PriorityMuxer.h

@@ -68,7 +68,7 @@ public:
 	///
 	/// Destructor
 	///
-	~PriorityMuxer();
+	~PriorityMuxer() override;
 
 	///
 	/// @brief Start/Stop the PriorityMuxer update timer; On disabled no priority and timeout updates will be performend
@@ -185,7 +185,7 @@ public:
 	///
 	/// @brief Queue a manual push where muxer doesn't recognize them (e.g. continous single color pushes)
 	///
-	void queuePush(){ emit timeRunner(); };
+	void queuePush() { emit timeRunner(); }
 
 signals:
 	///
@@ -253,7 +253,7 @@ private:
 	/// @brief Get the component of the given priority
 	/// @return The component
 	///
-	hyperion::Components getComponentOfPriority(int priority);
+	hyperion::Components getComponentOfPriority(int priority) const;
 
 	/// Logger instance
 	Logger* _log;

include/jsonserver/JsonServer.h

@@ -29,7 +29,7 @@ public:
 	/// @param The configuration
 	///
 	JsonServer(const QJsonDocument& config);
-	~JsonServer();
+	~JsonServer() override;
 
 	///
 	/// @return the port number on which this TCP listens for incoming connections

include/leddevice/LedDeviceFactory.h

@@ -1,8 +1,8 @@
 #ifndef LEDEVICEFACTORY_H
 #define LEDEVICEFACTORY_H
 
-// LedDevice includes
+class LedDevice;
-#include <leddevice/LedDevice.h>
+class QJsonObject;
 
 ///
 /// The LedDeviceFactory is responsible for constructing 'LedDevices'
@@ -10,7 +10,6 @@
 class LedDeviceFactory
 {
 public:
-
 	///
 	/// Constructs a LedDevice based on the given configuration
 	///

include/leddevice/LedDeviceWrapper.h

@@ -33,7 +33,7 @@ public:
 	/// @brief Get all available device schemas
 	/// @return device schemas
 	///
-	static const QJsonObject getLedDeviceSchemas();
+	static QJsonObject getLedDeviceSchemas();
 
 	///
 	/// @brief add all device constructors to the map
@@ -50,22 +50,22 @@ public:
 	/// @brief Get the current latch time of the ledDevice
 	/// @ return latch time in ms
 	///
-	int getLatchTime();
+	int getLatchTime() const;
 
 	///
 	/// @brief Get the current active ledDevice type
 	///
-	QString getActiveDeviceType();
+	QString getActiveDeviceType() const;
 
 	///
 	/// @brief Return the last enable state
 	///
-	bool enabled();
+	bool enabled() const;
 
 	///
 	/// @brief Get the current colorOrder from device
 	///
-	QString getColorOrder();
+	QString getColorOrder() const;
 
 	///
 	/// @brief Get the number of LEDs from device

include/ssdp/SSDPDiscover.h

@@ -58,7 +58,7 @@ public:
 	/// @param timeout_ms  The timeout in ms
 	/// @return The address+port of web-server or empty if timed out
 	///
-	const QString getFirstService(const searchType &type = searchType::STY_WEBSERVER,const QString &st = "urn:hyperion-project.org:device:basic:1", int timeout_ms = 3000);
+	QString getFirstService(const searchType &type = searchType::STY_WEBSERVER,const QString &st = "urn:hyperion-project.org:device:basic:1", int timeout_ms = 3000);
 
 	///
 	/// @brief Discover services via ssdp.
@@ -115,7 +115,7 @@ public:
 	///
 	/// @return Discovered services as JSON-document
 	///
-	QJsonArray getServicesDiscoveredJson();
+	QJsonArray getServicesDiscoveredJson() const;
 
 	///
 	/// @brief Set the ssdp discovery address (HOST)

include/ssdp/SSDPHandler.h

@@ -16,11 +16,12 @@ class QNetworkConfigurationManager;
 /// UPnP 1.0: spec: http://upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v1.0.pdf
 ///
 
-class SSDPHandler : public SSDPServer{
+class SSDPHandler : public SSDPServer
+{
 	Q_OBJECT
 public:
 	SSDPHandler(WebServer* webserver, quint16 flatBufPort, quint16 jsonServerPort, const QString &name,  QObject * parent = nullptr);
-	~SSDPHandler();
+	~SSDPHandler() override;
 
 	///
 	/// @brief Sends BYE BYE and stop server

include/ssdp/SSDPServer.h

@@ -7,7 +7,8 @@ class QUdpSocket;
 ///
 /// @brief The SSDP Server sends and receives (parses) SSDP requests
 ///
-class SSDPServer : public QObject {
+class SSDPServer : public QObject
+{
 	Q_OBJECT
 
 public:
@@ -17,7 +18,7 @@ public:
 	/// @param parent  The parent object
 	///
 	SSDPServer(QObject* parent = nullptr);
-	virtual ~SSDPServer();
+	~SSDPServer() override;
 
 	///
 	/// @brief Prepare server after thread start
@@ -81,7 +82,7 @@ public:
 	///
 	/// @brief Get current flatbuffer server port
 	///
-	quint16 getFlatBufPort() { return _fbsPort.toInt(); };
+	quint16 getFlatBufPort() const { return _fbsPort.toInt(); };
 
 	///
 	/// @brief set new jsonserver server port
@@ -91,7 +92,7 @@ public:
 	///
 	/// @brief get new jsonserver server port
 	///
-	quint16 getJsonServerPort() { return _jssPort.toInt(); };
+	quint16 getJsonServerPort() const { return _jssPort.toInt(); };
 
 		///
 	/// @brief set new hyperion name
@@ -101,7 +102,7 @@ public:
 	///
 	/// @brief get hyperion name
 	///
-	QString getHyperionName() { return _name; };
+	QString getHyperionName() const { return _name; };
 
 
 signals:

include/utils/Components.h

@@ -67,22 +67,22 @@ inline const char* componentToIdString(Components c)
 	}
 }
 
-inline Components stringToComponent(QString component)
+inline Components stringToComponent(const QString& component)
 {
-	component = component.toUpper();
+	const QString cmp = component.toUpper();
-	if (component == "ALL")           return COMP_ALL;
+	if (cmp == "ALL")           return COMP_ALL;
-	if (component == "SMOOTHING")     return COMP_SMOOTHING;
+	if (cmp == "SMOOTHING")     return COMP_SMOOTHING;
-	if (component == "BLACKBORDER")   return COMP_BLACKBORDER;
+	if (cmp == "BLACKBORDER")   return COMP_BLACKBORDER;
-	if (component == "FORWARDER")     return COMP_FORWARDER;
+	if (cmp == "FORWARDER")     return COMP_FORWARDER;
-	if (component == "BOBLIGHTSERVER")return COMP_BOBLIGHTSERVER;
+	if (cmp == "BOBLIGHTSERVER")return COMP_BOBLIGHTSERVER;
-	if (component == "GRABBER")       return COMP_GRABBER;
+	if (cmp == "GRABBER")       return COMP_GRABBER;
-	if (component == "V4L")           return COMP_V4L;
+	if (cmp == "V4L")           return COMP_V4L;
-	if (component == "COLOR")         return COMP_COLOR;
+	if (cmp == "COLOR")         return COMP_COLOR;
-	if (component == "EFFECT")        return COMP_EFFECT;
+	if (cmp == "EFFECT")        return COMP_EFFECT;
-	if (component == "IMAGE")         return COMP_IMAGE;
+	if (cmp == "IMAGE")         return COMP_IMAGE;
-	if (component == "LEDDEVICE")     return COMP_LEDDEVICE;
+	if (cmp == "LEDDEVICE")     return COMP_LEDDEVICE;
-	if (component == "FLATBUFSERVER") return COMP_FLATBUFSERVER;
+	if (cmp == "FLATBUFSERVER") return COMP_FLATBUFSERVER;
-	if (component == "PROTOSERVER")   return COMP_PROTOSERVER;
+	if (cmp == "PROTOSERVER")   return COMP_PROTOSERVER;
 	return COMP_INVALID;
 }
 

include/utils/FileUtils.h

@@ -10,8 +10,8 @@
 
 namespace FileUtils {
 
-	QString getBaseName(QString sourceFile);
+	QString getBaseName(const QString& sourceFile);
-	QString getDirName(QString sourceFile);
+	QString getDirName(const QString& sourceFile);
 
 	///
 	/// @brief remove directory recursive given by path

include/utils/Logger.h

@@ -67,7 +67,7 @@ public:
 
 	void     Message(LogLevel level, const char* sourceFile, const char* func, unsigned int line, const char* fmt, ...);
 	void     setMinLevel(LogLevel level) { _minLevel = static_cast<int>(level); }
-	LogLevel getMinLevel() { return static_cast<LogLevel>(int(_minLevel)); }
+	LogLevel getMinLevel() const { return static_cast<LogLevel>(int(_minLevel)); }
 	QString  getName() const { return _name; }
 	QString  getAppName() const { return _appname; }
 
@@ -76,7 +76,7 @@ signals:
 
 protected:
 	Logger(const QString & name="", LogLevel minLevel = INFO);
-	~Logger();
+	~Logger() override;
 
 private:
 	void write(const Logger::T_LOG_MESSAGE & message);

include/utils/NetOrigin.h

@@ -25,13 +25,13 @@ public:
 	/// @param local    The local address of the socket (Differs based on NetworkAdapter IP or localhost)
 	/// @return         True when allowed, else false
 	///
-	bool accessAllowed(const QHostAddress& address, const QHostAddress& local);
+	bool accessAllowed(const QHostAddress& address, const QHostAddress& local) const;
 
 	///
 	/// @brief Check if address is in subnet of local
 	/// @return True or false
 	///
-	bool isLocalAddress(const QHostAddress& address, const QHostAddress& local);
+	bool isLocalAddress(const QHostAddress& address, const QHostAddress& local) const;
 
 	static NetOrigin* getInstance(){ return instance; };
 	static NetOrigin* instance;

include/utils/PixelFormat.h

@@ -18,37 +18,37 @@ enum class PixelFormat {
 	NO_CHANGE
 };
 
-inline PixelFormat parsePixelFormat(QString pixelFormat)
+inline PixelFormat parsePixelFormat(const QString& pixelFormat)
 {
 	// convert to lower case
-	pixelFormat = pixelFormat.toLower();
+	QString format = pixelFormat.toLower();
 
-	if (pixelFormat.compare("yuyv") )
+	if (format.compare("yuyv") )
 	{
 		return PixelFormat::YUYV;
 	}
-	else if (pixelFormat.compare("uyvy") )
+	else if (format.compare("uyvy") )
 	{
 		return PixelFormat::UYVY;
 	}
-	else if (pixelFormat.compare("bgr16") )
+	else if (format.compare("bgr16") )
 	{
 		return PixelFormat::BGR16;
 	}
-	else if (pixelFormat.compare("bgr24") )
+	else if (format.compare("bgr24") )
 	{
 		return PixelFormat::BGR24;
 	}
-	else if (pixelFormat.compare("rgb32") )
+	else if (format.compare("rgb32") )
 	{
 		return PixelFormat::RGB32;
 	}
-	else if (pixelFormat.compare("bgr32") )
+	else if (format.compare("bgr32") )
 	{
 		return PixelFormat::BGR32;
 	}
 #ifdef HAVE_JPEG_DECODER
-	else if (pixelFormat.compare("mjpeg") )
+	else if (format.compare("mjpeg") )
 	{
 		return PixelFormat::MJPEG;
 	}

include/utils/Process.h

@@ -6,6 +6,6 @@
 namespace Process {
 
 void restartHyperion(bool asNewProcess=false);
-QByteArray command_exec(QString cmd, QByteArray data="");
+QByteArray command_exec(const QString& cmd, const QByteArray& data="");
 
 }

include/utils/Profiler.h

@@ -36,8 +36,8 @@ public:
 	Profiler(const char* sourceFile, const char* func, unsigned int line);
 	~Profiler();
 
-	static void TimerStart(const QString stopWatchName, const char* sourceFile, const char* func, unsigned int line);
+	static void TimerStart(const QString& stopWatchName, const char* sourceFile, const char* func, unsigned int line);
-	static void TimerGetTime(const QString stopWatchName, const char* sourceFile, const char* func, unsigned int line);
+	static void TimerGetTime(const QString& stopWatchName, const char* sourceFile, const char* func, unsigned int line);
 
 private:
 	static void initLogger();

include/utils/RgbToRgbw.h

@@ -14,7 +14,6 @@ namespace RGBW {
 		WHITE_OFF
 	};
 
-	WhiteAlgorithm stringToWhiteAlgorithm(QString str);
+	WhiteAlgorithm stringToWhiteAlgorithm(const QString& str);
 	void Rgb_to_Rgbw(ColorRgb input, ColorRgbw * output, WhiteAlgorithm algorithm);
-
 }

include/utils/VideoMode.h

@@ -12,16 +12,16 @@ enum class VideoMode
 	VIDEO_3DTAB
 };
 
-inline VideoMode parse3DMode(QString videoMode)
+inline VideoMode parse3DMode(const QString& videoMode)
 {
 	// convert to upper case
-	videoMode = videoMode.toUpper();
+	const QString vm = videoMode.toUpper();
 
-	if (videoMode == "3DTAB")
+	if (vm == "3DTAB")
 	{
 		return VideoMode::VIDEO_3DTAB;
 	}
-	else if (videoMode == "3DSBS")
+	else if (vm == "3DSBS")
 	{
 		return VideoMode::VIDEO_3DSBS;
 	}

include/utils/jsonschema/QJsonSchemaChecker.h

@@ -57,7 +57,7 @@ public:
 	///
 	/// @return A list of error messages
 	///
-	const QStringList & getMessages() const;
+	QStringList getMessages() const;
 
 private:
 	///

include/utils/settings.h

@@ -37,7 +37,7 @@ namespace settings {
 	/// @param  type  The settings::type from enum
 	/// @return       The settings type as string
 	///
-	inline QString typeToString(const type& type)
+	inline QString typeToString(type type)
 	{
 		switch (type)
 		{

include/webserver/WebServer.h

@@ -28,7 +28,8 @@ openssl req -x509 -newkey rsa:4096 -sha256 -days 3650 -nodes \
   -subj /CN=hyperion-project.org
 */
 
-class WebServer : public QObject {
+class WebServer : public QObject
+{
 	Q_OBJECT
 
 public:

libsrc/api/JsonAPI.cpp

@@ -494,7 +494,7 @@ void JsonAPI::handleServerInfoCommand(const QJsonObject &message, const QString
 #if defined(ENABLE_V4L2)
 
 	QJsonArray availableV4L2devices;
-	for (auto devicePath : GrabberWrapper::getInstance()->getV4L2devices())
+	for (const auto& devicePath : GrabberWrapper::getInstance()->getV4L2devices())
 	{
 		QJsonObject device;
 		device["device"] = devicePath;

libsrc/blackborder/BlackBorderProcessor.cpp

@@ -89,8 +89,8 @@ void BlackBorderProcessor::handleCompStateChangeRequest(hyperion::Components com
 	}
 }
 
-void BlackBorderProcessor::setHardDisable(bool disable) {
+void BlackBorderProcessor::setHardDisable(bool disable)
-
+{
 	if (disable)
 	{
 		_enabled = false;

libsrc/boblightserver/BoblightServer.cpp

@@ -67,7 +67,7 @@ void BoblightServer::stop()
 	_hyperion->setNewComponentState(COMP_BOBLIGHTSERVER, _server->isListening());
 }
 
-bool BoblightServer::active()
+bool BoblightServer::active() const
 {
 	return _server->isListening();
 }

libsrc/bonjour/bonjourserviceregister.cpp

@@ -65,7 +65,7 @@ void BonjourServiceRegister::registerService(const QString& service, int port)
 	);
 }
 
-void BonjourServiceRegister::registerService(const BonjourRecord &record, quint16 servicePort, std::vector<std::pair<std::string, std::string>> txt)
+void BonjourServiceRegister::registerService(const BonjourRecord &record, quint16 servicePort, const std::vector<std::pair<std::string, std::string>>& txt)
 {
 	if (dnssref)
 	{

libsrc/commandline/Option.cpp

@@ -11,7 +11,6 @@ Option::Option(const QStringList &names, const QString &description, const QStri
 	: QCommandLineOption(names, description, valueName, defaultValue)
 {}
 
-
 bool Option::validate(Parser & parser, QString &value)
 {
 	/* By default everything is accepted */
@@ -22,22 +21,22 @@ Option::Option(const QCommandLineOption &other)
 	: QCommandLineOption(other)
 {}
 
-QString Option::value(Parser &parser)
+QString Option::value(Parser &parser) const
 {
 	return parser.value(*this);
 }
 
-QString Option::name()
+QString Option::name() const
 {
 	return this->names().last();
 }
 
-QString Option::getError()
+QString Option::getError() const
 {
 	return this->_error;
 }
 
-const char* Option::getCString(Parser &parser)
+const char* Option::getCString(Parser &parser) const
 {
 	return value(parser).toLocal8Bit().constData();
 }

libsrc/effectengine/EffectEngine.cpp

@@ -61,9 +61,9 @@ QString EffectEngine::deleteEffect(const QString& effectName)
 	return _effectFileHandler->deleteEffect(effectName);
 }
 
-const std::list<ActiveEffectDefinition> &EffectEngine::getActiveEffects()
+std::list<ActiveEffectDefinition> EffectEngine::getActiveEffects() const
 {
-	_availableActiveEffects.clear();
+	std::list<ActiveEffectDefinition> availableActiveEffects;
 
 	for (Effect * effect : _activeEffects)
 	{
@@ -73,13 +73,13 @@ const std::list<ActiveEffectDefinition> &EffectEngine::getActiveEffects()
 		activeEffectDefinition.priority = effect->getPriority();
 		activeEffectDefinition.timeout  = effect->getTimeout();
 		activeEffectDefinition.args     = effect->getArgs();
-		_availableActiveEffects.push_back(activeEffectDefinition);
+		availableActiveEffects.push_back(activeEffectDefinition);
 	}
 
-	return _availableActiveEffects;
+	return availableActiveEffects;
 }
 
-const std::list<EffectSchema> & EffectEngine::getEffectSchemas()
+std::list<EffectSchema> EffectEngine::getEffectSchemas() const
 {
 	return _effectFileHandler->getEffectSchemas();
 }

libsrc/grabber/amlogic/IonBuffer.h

@@ -65,8 +65,6 @@ public:
 		return physicalAddress;
 	}
 
-
-
 	IonBuffer(size_t bufferSize)
 		: bufferSize(bufferSize)
 	{

libsrc/grabber/dispmanx/DispmanxFrameGrabberMock.cpp

@@ -30,7 +30,7 @@ int vc_dispmanx_display_get_info(int, DISPMANX_MODEINFO_T *vc_info)
 	return 0;
 }
 
-DISPMANX_RESOURCE_HANDLE_T vc_dispmanx_resource_create(int,int width,int height, uint32_t *)
+DISPMANX_RESOURCE_HANDLE_T vc_dispmanx_resource_create(int, int width, int height, uint32_t *)
 {
 	return new DISPMANX_RESOURCE(width,height);
 }
@@ -66,7 +66,7 @@ int vc_dispmanx_snapshot(int, DISPMANX_RESOURCE_HANDLE_T resource, int vc_flags)
 	if (__bcm_frame_counter < 25)
 	{
 		color[0] = ColorRgba::WHITE;
-		color[1] = ColorRgba::RED;
+0		color[1] = ColorRgba::RED;
 		color[2] = ColorRgba::BLUE;
 		color[3] = ColorRgba::GREEN;
 	}

libsrc/grabber/v4l2/V4L2Grabber.cpp

@@ -31,10 +31,10 @@
 #endif
 
 V4L2Grabber::V4L2Grabber(const QString & device
-		, const unsigned width
+		, unsigned width
-		, const unsigned height
+		, unsigned height
-		, const unsigned fps
+		, unsigned fps
-		, const unsigned input
+		, unsigned input
 		, VideoStandard videoStandard
 		, PixelFormat pixelFormat
 		, int pixelDecimation
@@ -1368,7 +1368,7 @@ bool V4L2Grabber::setFramerate(int fps)
 	return false;
 }
 
-QStringList V4L2Grabber::getV4L2devices()
+QStringList V4L2Grabber::getV4L2devices() const
 {
 	QStringList result = QStringList();
 	for (auto it = _deviceProperties.begin(); it != _deviceProperties.end(); ++it)
@@ -1378,22 +1378,22 @@ QStringList V4L2Grabber::getV4L2devices()
 	return result;
 }
 
-QString V4L2Grabber::getV4L2deviceName(QString devicePath)
+QString V4L2Grabber::getV4L2deviceName(const QString& devicePath) const
 {
 	return _deviceProperties.value(devicePath).name;
 }
 
-QMultiMap<QString, int> V4L2Grabber::getV4L2deviceInputs(QString devicePath)
+QMultiMap<QString, int> V4L2Grabber::getV4L2deviceInputs(const QString& devicePath) const
 {
 	return _deviceProperties.value(devicePath).inputs;
 }
 
-QStringList V4L2Grabber::getResolutions(QString devicePath)
+QStringList V4L2Grabber::getResolutions(const QString& devicePath) const
 {
 	return _deviceProperties.value(devicePath).resolutions;
 }
 
-QStringList V4L2Grabber::getFramerates(QString devicePath)
+QStringList V4L2Grabber::getFramerates(const QString& devicePath) const
 {
 	return _deviceProperties.value(devicePath).framerates;
 }

libsrc/grabber/v4l2/V4L2Wrapper.cpp

@@ -6,10 +6,10 @@
 #include <QTimer>
 
 V4L2Wrapper::V4L2Wrapper(const QString &device,
-		const unsigned grabWidth,
+		unsigned grabWidth,
-		const unsigned grabHeight,
+		unsigned grabHeight,
-		const unsigned fps,
+		unsigned fps,
-		const unsigned input,
+		unsigned input,
 		VideoStandard videoStandard,
 		PixelFormat pixelFormat,
 		int pixelDecimation )
@@ -85,7 +85,7 @@ void V4L2Wrapper::setSignalDetectionEnable(bool enable)
 	_grabber.setSignalDetectionEnable(enable);
 }
 
-bool V4L2Wrapper::getSignalDetectionEnable()
+bool V4L2Wrapper::getSignalDetectionEnable() const
 {
 	return _grabber.getSignalDetectionEnabled();
 }
@@ -95,12 +95,12 @@ void V4L2Wrapper::setCecDetectionEnable(bool enable)
 	_grabber.setCecDetectionEnable(enable);
 }
 
-bool V4L2Wrapper::getCecDetectionEnable()
+bool V4L2Wrapper::getCecDetectionEnable() const
 {
 	return _grabber.getCecDetectionEnabled();
 }
 
-void V4L2Wrapper::setDeviceVideoStandard(QString device, VideoStandard videoStandard)
+void V4L2Wrapper::setDeviceVideoStandard(const QString& device, VideoStandard videoStandard)
 {
 	_grabber.setDeviceVideoStandard(device, videoStandard);
 }

libsrc/hyperion/AuthManager.cpp

@@ -61,7 +61,7 @@ AuthManager::AuthDefinition AuthManager::createToken(const QString &comment)
 	return def;
 }
 
-QVector<AuthManager::AuthDefinition> AuthManager::getTokenList()
+QVector<AuthManager::AuthDefinition> AuthManager::getTokenList() const
 {
 	QVector<QVariantMap> vector = _authTable->getTokenList();
 	QVector<AuthManager::AuthDefinition> finalVec;
@@ -79,7 +79,7 @@ QVector<AuthManager::AuthDefinition> AuthManager::getTokenList()
 	return finalVec;
 }
 
-const QString AuthManager::getUserToken(const QString &usr)
+QString AuthManager::getUserToken(const QString &usr) const
 {
 	QString tok = _authTable->getUserToken(usr);
 	return QString(_authTable->getUserToken(usr));
@@ -192,7 +192,7 @@ void AuthManager::handlePendingTokenRequest(const QString &id, bool accept)
 	}
 }
 
-QVector<AuthManager::AuthDefinition> AuthManager::getPendingRequests()
+QVector<AuthManager::AuthDefinition> AuthManager::getPendingRequests() const
 {
 	QVector<AuthManager::AuthDefinition> finalVec;
 	for (const auto &entry : _pendingRequests)

libsrc/hyperion/Grabber.cpp

@@ -1,7 +1,6 @@
 #include <hyperion/Grabber.h>
 
-
+Grabber::Grabber(const QString& grabberName, int width, int height, int cropLeft, int cropRight, int cropTop, int cropBottom)
-Grabber::Grabber(QString grabberName, int width, int height, int cropLeft, int cropRight, int cropTop, int cropBottom)
 	: _imageResampler()
 	, _useImageResampler(true)
 	, _videoMode(VideoMode::VIDEO_2D)

libsrc/hyperion/GrabberWrapper.cpp

@@ -11,7 +11,7 @@
 
 GrabberWrapper* GrabberWrapper::instance = nullptr;
 
-GrabberWrapper::GrabberWrapper(QString grabberName, Grabber * ggrabber, unsigned width, unsigned height, unsigned updateRate_Hz)
+GrabberWrapper::GrabberWrapper(const QString& grabberName, Grabber * ggrabber, unsigned width, unsigned height, unsigned updateRate_Hz)
 	: _grabberName(grabberName)
 	, _timer(new QTimer(this))
 	, _updateInterval_ms(1000/updateRate_Hz)
@@ -201,7 +201,7 @@ void GrabberWrapper::tryStart()
 	}
 }
 
-QStringList GrabberWrapper::getV4L2devices()
+QStringList GrabberWrapper::getV4L2devices() const
 {
 	if(_grabberName.startsWith("V4L"))
 		return _ggrabber->getV4L2devices();
@@ -209,7 +209,7 @@ QStringList GrabberWrapper::getV4L2devices()
 	return QStringList();
 }
 
-QString GrabberWrapper::getV4L2deviceName(QString devicePath)
+QString GrabberWrapper::getV4L2deviceName(const QString& devicePath) const
 {
 	if(_grabberName.startsWith("V4L"))
 		return _ggrabber->getV4L2deviceName(devicePath);
@@ -217,7 +217,7 @@ QString GrabberWrapper::getV4L2deviceName(QString devicePath)
 	return QString();
 }
 
-QMultiMap<QString, int> GrabberWrapper::getV4L2deviceInputs(QString devicePath)
+QMultiMap<QString, int> GrabberWrapper::getV4L2deviceInputs(const QString& devicePath) const
 {
 	if(_grabberName.startsWith("V4L"))
 		return _ggrabber->getV4L2deviceInputs(devicePath);
@@ -225,7 +225,7 @@ QMultiMap<QString, int> GrabberWrapper::getV4L2deviceInputs(QString devicePath)
 	return QMultiMap<QString, int>();
 }
 
-QStringList GrabberWrapper::getResolutions(QString devicePath)
+QStringList GrabberWrapper::getResolutions(const QString& devicePath) const
 {
 	if(_grabberName.startsWith("V4L"))
 		return _ggrabber->getResolutions(devicePath);
@@ -233,7 +233,7 @@ QStringList GrabberWrapper::getResolutions(QString devicePath)
 	return QStringList();
 }
 
-QStringList GrabberWrapper::getFramerates(QString devicePath)
+QStringList GrabberWrapper::getFramerates(const QString& devicePath) const
 {
 	if(_grabberName.startsWith("V4L"))
 		return _ggrabber->getFramerates(devicePath);

libsrc/hyperion/Hyperion.cpp

@@ -255,7 +255,7 @@ QJsonDocument Hyperion::getSetting(settings::type type) const
 	return _settingsManager->getSetting(type);
 }
 
-bool Hyperion::saveSettings(QJsonObject config, bool correct)
+bool Hyperion::saveSettings(const QJsonObject& config, bool correct)
 {
 	return _settingsManager->saveSettings(config, correct);
 }
@@ -290,7 +290,7 @@ bool Hyperion::setVisiblePriority(int priority)
 	return _muxer.setPriority(priority);
 }
 
-bool Hyperion::sourceAutoSelectEnabled()
+bool Hyperion::sourceAutoSelectEnabled() const
 {
 	return _muxer.isSourceAutoSelectEnabled();
 }
@@ -305,7 +305,7 @@ std::map<hyperion::Components, bool> Hyperion::getAllComponents() const
 	return _componentRegister.getRegister();
 }
 
-int Hyperion::isComponentEnabled(hyperion::Components comp)
+int Hyperion::isComponentEnabled(hyperion::Components comp) const
 {
 	return _componentRegister.isComponentEnabled(comp);
 }
@@ -396,7 +396,7 @@ end:
 		_muxer.queuePush();
 }
 
-const QStringList & Hyperion::getAdjustmentIds() const
+QStringList Hyperion::getAdjustmentIds() const
 {
 	return _raw2ledAdjustment->getAdjustmentIds();
 }
@@ -464,22 +464,22 @@ QString Hyperion::deleteEffect(const QString& effectName)
 	return _effectEngine->deleteEffect(effectName);
 }
 
-const std::list<EffectDefinition> & Hyperion::getEffects() const
+std::list<EffectDefinition> Hyperion::getEffects() const
 {
 	return _effectEngine->getEffects();
 }
 
-const std::list<ActiveEffectDefinition> & Hyperion::getActiveEffects() const
+std::list<ActiveEffectDefinition> Hyperion::getActiveEffects() const
 {
 	return _effectEngine->getActiveEffects();
 }
 
-const std::list<EffectSchema> & Hyperion::getEffectSchemas() const
+std::list<EffectSchema> Hyperion::getEffectSchemas() const
 {
 	return _effectEngine->getEffectSchemas();
 }
 
-const QJsonObject& Hyperion::getQJsonConfig() const
+QJsonObject Hyperion::getQJsonConfig() const
 {
 	return _settingsManager->getSettings();
 }

libsrc/hyperion/HyperionIManager.cpp

@@ -28,7 +28,7 @@ Hyperion* HyperionIManager::getHyperionInstance(quint8 instance)
 	return _runningInstances.value(0);
 }
 
-const QVector<QVariantMap> HyperionIManager::getInstanceData()
+QVector<QVariantMap> HyperionIManager::getInstanceData() const
 {
 	QVector<QVariantMap> instances = _instanceTable->getAllInstances();
 	for( auto & entry : instances)

libsrc/hyperion/ImageProcessor.cpp

@@ -10,7 +10,7 @@
 using namespace hyperion;
 
 // global transform method
-int ImageProcessor::mappingTypeToInt(QString mappingType)
+int ImageProcessor::mappingTypeToInt(const QString& mappingType)
 {
 	if (mappingType == "unicolor_mean" )
 		return 1;
@@ -99,7 +99,7 @@ void ImageProcessor::setBlackbarDetectDisable(bool enable)
 	_borderProcessor->setHardDisable(enable);
 }
 
-bool ImageProcessor::blackBorderDetectorEnabled()
+bool ImageProcessor::blackBorderDetectorEnabled() const
 {
 	return _borderProcessor->enabled();
 }

libsrc/hyperion/MessageForwarder.cpp

@@ -156,7 +156,7 @@ void MessageForwarder::handlePriorityChanges(quint8 priority)
 	}
 }
 
-void MessageForwarder::addJsonSlave(QString slave)
+void MessageForwarder::addJsonSlave(const QString& slave)
 {
 	QStringList parts = slave.split(":");
 	if (parts.size() != 2)
@@ -185,7 +185,7 @@ void MessageForwarder::addJsonSlave(QString slave)
 		_jsonSlaves << slave;
 }
 
-void MessageForwarder::addFlatbufferSlave(QString slave)
+void MessageForwarder::addFlatbufferSlave(const QString& slave)
 {
 	QStringList parts = slave.split(":");
 	if (parts.size() != 2)

libsrc/hyperion/MultiColorAdjustment.cpp

@@ -67,7 +67,7 @@ bool MultiColorAdjustment::verifyAdjustments() const
 	return ok;
 }
 
-const QStringList & MultiColorAdjustment::getAdjustmentIds()
+QStringList MultiColorAdjustment::getAdjustmentIds() const
 {
 	return _adjustmentIds;
 }

libsrc/hyperion/PriorityMuxer.cpp

@@ -133,7 +133,7 @@ PriorityMuxer::InputInfo PriorityMuxer::getInputInfo(int priority) const
 	return elemIt.value();
 }
 
-hyperion::Components PriorityMuxer::getComponentOfPriority(int priority)
+hyperion::Components PriorityMuxer::getComponentOfPriority(int priority) const
 {
 	return _activeInputs[priority].componentId;
 }

libsrc/hyperion/SettingsManager.cpp

@@ -130,7 +130,7 @@ bool SettingsManager::saveSettings(QJsonObject config, bool correct)
 		Warning(_log,"Fixing json data!");
 		config = schemaChecker.getAutoCorrectedConfig(config);
 
-		for (auto & schemaError : schemaChecker.getMessages())
+		for (const auto & schemaError : schemaChecker.getMessages())
 			Warning(_log, "Config Fix: %s", QSTRING_CSTR(schemaError));
 	}
 

libsrc/leddevice/LedDeviceTemplate.h

@@ -35,21 +35,21 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the output device.
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the output device.
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -57,7 +57,7 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 private:
 

libsrc/leddevice/LedDeviceWrapper.cpp

@@ -67,7 +67,7 @@ void LedDeviceWrapper::createLedDevice(const QJsonObject& config)
 	thread->start();
 }
 
-const QJsonObject LedDeviceWrapper::getLedDeviceSchemas()
+QJsonObject LedDeviceWrapper::getLedDeviceSchemas()
 {
 	// make sure the resources are loaded (they may be left out after static linking)
 	Q_INIT_RESOURCE(LedDeviceSchemas);
@@ -118,21 +118,21 @@ const LedDeviceRegistry& LedDeviceWrapper::getDeviceMap()
 	return _ledDeviceMap;
 }
 
-int LedDeviceWrapper::getLatchTime()
+int LedDeviceWrapper::getLatchTime() const
 {
 	int value = 0;
 	QMetaObject::invokeMethod(_ledDevice, "getLatchTime", Qt::BlockingQueuedConnection, Q_RETURN_ARG(int, value));
 	return value;
 }
 
-QString LedDeviceWrapper::getActiveDeviceType()
+QString LedDeviceWrapper::getActiveDeviceType() const
 {
 	QString value = 0;
 	QMetaObject::invokeMethod(_ledDevice, "getActiveDeviceType", Qt::BlockingQueuedConnection, Q_RETURN_ARG(QString, value));
 	return value;
 }
 
-QString LedDeviceWrapper::getColorOrder()
+QString LedDeviceWrapper::getColorOrder() const
 {
 	QString value;
 	QMetaObject::invokeMethod(_ledDevice, "getColorOrder", Qt::BlockingQueuedConnection, Q_RETURN_ARG(QString, value));
@@ -146,7 +146,7 @@ unsigned int LedDeviceWrapper::getLedCount() const
 	return value;
 }
 
-bool LedDeviceWrapper::enabled()
+bool LedDeviceWrapper::enabled() const
 {
 	return _enabled;
 }

libsrc/leddevice/dev_hid/LedDeviceHyperionUsbasp.h

@@ -43,14 +43,14 @@ public:
 	///
 	/// Destructor of the LedDevice; closes the output device if it is open
 	///
-	virtual ~LedDeviceHyperionUsbasp() override;
+	~LedDeviceHyperionUsbasp() override;
 
 public slots:
 	///
 	/// Closes the output device.
 	/// Includes switching-off the device and stopping refreshes
 	///
-	virtual int close() override;
+	int close() override;
 
 protected:
 	///
@@ -67,7 +67,7 @@ protected:
 	///
 	/// @return Zero on success else negative
 	///
-	virtual int write(const std::vector<ColorRgb>& ledValues) override;
+	int write(const std::vector<ColorRgb>& ledValues) override;
 
 	///
 	/// Test if the device is a Hyperion Usbasp device

libsrc/leddevice/dev_hid/LedDeviceLightpack.h

@@ -34,7 +34,7 @@ public:
 	///
 	/// @brief Destructor of the LedDevice
 	///
-	virtual ~LedDeviceLightpack() override;
+	~LedDeviceLightpack() override;
 
 	///
 	/// @brief Constructs the LED-device
@@ -50,28 +50,28 @@ public:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the output device.
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the output device.
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Power-/turn off the Nanoleaf device.
 	///
 	/// @return True if success
 	///
-	virtual bool powerOff() override;
+	bool powerOff() override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -100,7 +100,7 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 private:
 

libsrc/leddevice/dev_hid/LedDeviceMultiLightpack.h

@@ -31,7 +31,7 @@ public:
 	///
 	/// @brief Destructor of the LedDevice
 	///
-	virtual ~LedDeviceMultiLightpack() override;
+	~LedDeviceMultiLightpack() override;
 
 	///
 	/// @brief Constructs the LED-device
@@ -49,28 +49,28 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the output device.
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the output device.
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Power-/turn off the Nanoleaf device.
 	///
 	/// @return True if success
 	///
-	virtual bool powerOff() override;
+	bool powerOff() override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.

libsrc/leddevice/dev_hid/LedDevicePaintpack.h

@@ -34,7 +34,7 @@ private:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -42,7 +42,7 @@ private:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 };
 
 #endif // LEDEVICEPAINTTPACK_H

libsrc/leddevice/dev_hid/LedDeviceRawHID.h

@@ -37,7 +37,7 @@ private:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -45,7 +45,7 @@ private:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 };
 
 #endif // LEDEVICERAWHID_H

libsrc/leddevice/dev_hid/ProviderHID.cpp

@@ -158,14 +158,17 @@ int ProviderHID::writeBytes(unsigned size, const uint8_t * data)
 	}
 
 	// Handle first error
-	if(ret < 0){
+	if(ret < 0)
+	{
 		Error(_log,"Failed to write to HID device.");
 
 		// Try again
-		if(_useFeature){
+		if(_useFeature)
+		{
 			ret = hid_send_feature_report(_deviceHandle, ledData, size + 1);
 		}
-		else{
+		else
+		{
 			ret = hid_write(_deviceHandle, ledData, size + 1);
 		}
 
@@ -177,7 +180,6 @@ int ProviderHID::writeBytes(unsigned size, const uint8_t * data)
 			_deviceHandle = nullptr;
 		}
 	}
-	
 	return ret;
 }
 

libsrc/leddevice/dev_hid/ProviderHID.h

@@ -26,14 +26,14 @@ public:
 	///
 	/// @brief Destructor of the LedDevice
 	///
-	virtual ~ProviderHID() override;
+	~ProviderHID() override;
 
 	///
 	/// @brief Discover HIB (USB) devices available (for configuration).
 	///
 	/// @return A JSON structure holding a list of devices found
 	///
-	virtual QJsonObject discover() override;
+	QJsonObject discover() override;
 
 protected:
 
@@ -43,21 +43,21 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the output device.
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the output device.
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Write the given bytes to the HID-device

libsrc/leddevice/dev_net/LedDeviceAtmoOrb.h

@@ -33,7 +33,7 @@ public:
 	///
 	/// @brief Destructor of the LedDevice
 	///
-	virtual ~LedDeviceAtmoOrb() override;
+	~LedDeviceAtmoOrb() override;
 
 	///
 	/// @brief Constructs the LED-device
@@ -51,21 +51,21 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the output device.
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the output device.
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -73,7 +73,7 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 private:
 

libsrc/leddevice/dev_net/LedDeviceFadeCandy.cpp

@@ -151,7 +151,7 @@ int LedDeviceFadeCandy::close()
 	return retval;
 }
 
-bool LedDeviceFadeCandy::isConnected()
+bool LedDeviceFadeCandy::isConnected() const
 {
 	bool connected = false;
 	if ( _client != nullptr )
@@ -204,7 +204,7 @@ int LedDeviceFadeCandy::transferData()
 	return -2;
 }
 
-int LedDeviceFadeCandy::sendSysEx(uint8_t systemId, uint8_t commandId, QByteArray msg)
+int LedDeviceFadeCandy::sendSysEx(uint8_t systemId, uint8_t commandId, const QByteArray& msg)
 {
 	if ( isConnected() )
 	{

libsrc/leddevice/dev_net/LedDeviceFadeCandy.h

@@ -62,21 +62,21 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the output device.
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the output device.
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -84,7 +84,7 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 private:
 
@@ -106,7 +106,7 @@ private:
 	///
 	/// @return True, if connection established
 	///
-	bool isConnected();
+	bool isConnected() const;
 
 	///
 	/// @brief Transfer current opc_data buffer to opc server
@@ -122,7 +122,7 @@ private:
 	/// @param[in] commandId id of command
 	/// @param[in] msg the sysEx message
 	/// @return amount bytes written, -1 if failed
-	int sendSysEx(uint8_t systemId, uint8_t commandId, QByteArray msg);
+	int sendSysEx(uint8_t systemId, uint8_t commandId, const QByteArray& msg);
 
 	///
 	/// @brief Sends the configuration to fadecandy cserver

libsrc/leddevice/dev_net/LedDeviceNanoleaf.cpp

@@ -513,7 +513,7 @@ bool LedDeviceNanoleaf::powerOff()
 	return true;
 }
 
-QString LedDeviceNanoleaf::getOnOffRequest (bool isOn ) const
+QString LedDeviceNanoleaf::getOnOffRequest(bool isOn) const
 {
 	QString state = isOn ? STATE_VALUE_TRUE : STATE_VALUE_FALSE;
 	return QString( "{\"%1\":{\"%2\":%3}}" ).arg(STATE_ON, STATE_ONOFF_VALUE, state);
@@ -614,7 +614,7 @@ int LedDeviceNanoleaf::write(const std::vector<ColorRgb> & ledValues)
 	return retVal;
 }
 
-std::string LedDeviceNanoleaf:: uint8_vector_to_hex_string( const std::vector<uint8_t>& buffer ) const
+std::string LedDeviceNanoleaf::uint8_vector_to_hex_string(const std::vector<uint8_t>& buffer) const
 {
 	std::stringstream ss;
 	ss << std::hex << std::setfill('0');

libsrc/leddevice/dev_net/LedDeviceNanoleaf.h

@@ -37,7 +37,7 @@ public:
 	///
 	/// @brief Destructor of the LED-device
 	///
-	virtual ~LedDeviceNanoleaf() override;
+	~LedDeviceNanoleaf() override;
 
 	///
 	/// @brief Constructs the LED-device
@@ -51,7 +51,7 @@ public:
 	///
 	/// @return A JSON structure holding a list of devices found
 	///
-	virtual QJsonObject discover() override;
+	QJsonObject discover() override;
 
 	///
 	/// @brief Get the Nanoleaf device's resource properties
@@ -68,7 +68,7 @@ public:
 	/// @param[in] params Parameters to query device
 	/// @return A JSON structure holding the device's properties
 	///
-	virtual QJsonObject getProperties(const QJsonObject& params) override;
+	QJsonObject getProperties(const QJsonObject& params) override;
 
 	///
 	/// @brief Send an update to the Nanoleaf device to identify it.
@@ -83,7 +83,7 @@ public:
 	///
 	/// @param[in] params Parameters to address device
 	///
-	virtual void identify(const QJsonObject& params) override;
+	void identify(const QJsonObject& params) override;
 
 protected:
 
@@ -100,7 +100,7 @@ protected:
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -108,21 +108,21 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	//////
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 	///
 	/// @brief Power-/turn on the Nanoleaf device.
 	///
 	/// @brief Store the device's original state.
 	///
-	virtual bool powerOn() override;
+	bool powerOn() override;
 
 	///
 	/// @brief Power-/turn off the Nanoleaf device.
 	///
 	/// @return True if success
 	///
-	virtual bool powerOff() override;
+	bool powerOff() override;
 
 private:
 

libsrc/leddevice/dev_net/LedDevicePhilipsHue.cpp

@@ -347,7 +347,7 @@ bool LedDevicePhilipsHueBridge::init(const QJsonObject &deviceConfig)
 	return isInitOK;
 }
 
-bool LedDevicePhilipsHueBridge::initRestAPI(const QString &hostname, int port, const QString &token )
+bool LedDevicePhilipsHueBridge::initRestAPI(const QString &hostname, int port, const QString &token)
 {
 	bool isInitOK = false;
 
@@ -403,12 +403,12 @@ int LedDevicePhilipsHueBridge::close()
 	return retval;
 }
 
-const int *LedDevicePhilipsHueBridge::getCiphersuites()
+const int *LedDevicePhilipsHueBridge::getCiphersuites() const
 {
 	return SSL_CIPHERSUITES;
 }
 
-void LedDevicePhilipsHueBridge::log(const char* msg, const char* type, ...)
+void LedDevicePhilipsHueBridge::log(const char* msg, const char* type, ...) const
 {
 	const size_t max_val_length = 1024;
 	char val[max_val_length];
@@ -544,17 +544,17 @@ void LedDevicePhilipsHueBridge::setGroupMap(const QJsonDocument &doc)
 	}
 }
 
-const QMap<quint16,QJsonObject>& LedDevicePhilipsHueBridge::getLightMap()
+QMap<quint16,QJsonObject> LedDevicePhilipsHueBridge::getLightMap() const
 {
 	return _lightsMap;
 }
 
-const QMap<quint16,QJsonObject>& LedDevicePhilipsHueBridge::getGroupMap()
+QMap<quint16,QJsonObject> LedDevicePhilipsHueBridge::getGroupMap() const
 {
 	return _groupsMap;
 }
 
-QString LedDevicePhilipsHueBridge::getGroupName(quint16 groupId)
+QString LedDevicePhilipsHueBridge::getGroupName(quint16 groupId) const
 {
 	QString groupName;
 	if( _groupsMap.contains( groupId ) )
@@ -569,7 +569,7 @@ QString LedDevicePhilipsHueBridge::getGroupName(quint16 groupId)
 	return groupName;
 }
 
-QJsonArray LedDevicePhilipsHueBridge::getGroupLights(quint16 groupId)
+QJsonArray LedDevicePhilipsHueBridge::getGroupLights(quint16 groupId) const
 {
 	QJsonArray groupLights;
 	// search user groupid inside _groupsMap and create light if found
@@ -599,13 +599,13 @@ QJsonArray LedDevicePhilipsHueBridge::getGroupLights(quint16 groupId)
 	return groupLights;
 }
 
-bool LedDevicePhilipsHueBridge::checkApiError(const QJsonDocument &response )
+bool LedDevicePhilipsHueBridge::checkApiError(const QJsonDocument &response)
 {
 	bool apiError = false;
 	QString errorReason;
 
 	QString strJson(response.toJson(QJsonDocument::Compact));
-	DebugIf(verbose, _log, "Reply: [%s]", strJson.toUtf8().constData() );
+	DebugIf(verbose, _log, "Reply: [%s]", strJson.toUtf8().constData());
 
 	QVariantList rspList = response.toVariant().toList();
 	if ( !rspList.isEmpty() )
@@ -662,7 +662,7 @@ QJsonDocument LedDevicePhilipsHueBridge::setGroupState(unsigned int groupId, boo
 	return post( QString("%1/%2").arg( API_GROUPS ).arg( groupId ), QString("{\"%1\":{\"%2\":%3}}").arg( API_STREAM, API_STREAM_ACTIVE, active ) );
 }
 
-bool LedDevicePhilipsHueBridge::isStreamOwner(const QString &streamOwner)
+bool LedDevicePhilipsHueBridge::isStreamOwner(const QString &streamOwner) const
 {
 	return ( streamOwner != "" && streamOwner == _username );
 }
@@ -1254,13 +1254,13 @@ bool LedDevicePhilipsHue::setStreamGroupState(bool state)
 	return false;
 }
 
-QByteArray LedDevicePhilipsHue::prepareStreamData()
+QByteArray LedDevicePhilipsHue::prepareStreamData() const
 {
 	QByteArray msg;
 	msg.reserve(static_cast<int>(sizeof(HEADER) + sizeof(PAYLOAD_PER_LIGHT) * _lights.size()));
 	msg.append((const char*)HEADER, sizeof(HEADER));
 
-	for (PhilipsHueLight& light : _lights)
+	for (const PhilipsHueLight& light : _lights)
 	{
 		CiColor lightC = light.getColor();
 		quint64 R = lightC.x * 0xffff;

libsrc/leddevice/dev_net/LedDevicePhilipsHue.h

@@ -208,13 +208,13 @@ public:
 
 	void setLightState(unsigned int lightId = 0, const QString &state = "");
 
-	const QMap<quint16,QJsonObject>& getLightMap();
+	QMap<quint16,QJsonObject> getLightMap() const;
 
-	const QMap<quint16,QJsonObject>& getGroupMap();
+	QMap<quint16,QJsonObject> getGroupMap() const;
 
-	QString getGroupName(quint16 groupId = 0);
+	QString getGroupName(quint16 groupId = 0) const;
 
-	QJsonArray getGroupLights(quint16 groupId = 0);
+	QJsonArray getGroupLights(quint16 groupId = 0) const;
 
 
 
@@ -226,21 +226,21 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the Hue-Bridge device and its SSL-connection
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the Hue-Bridge device and its SSL-connection
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Check, if Hue API response indicate error
@@ -264,12 +264,12 @@ protected:
 	QJsonDocument getGroupState( unsigned int groupId );
 	QJsonDocument setGroupState( unsigned int groupId, bool state);
 
-	bool isStreamOwner(const QString &streamOwner);
+	bool isStreamOwner(const QString &streamOwner) const;
 	bool initMaps();
 
-	void log(const char* msg, const char* type, ...);
+	void log(const char* msg, const char* type, ...) const;
 
-	const int * getCiphersuites() override;
+	const int * getCiphersuites() const override;
 
 private:
 
@@ -316,7 +316,7 @@ public:
 	///
 	/// @brief Destructor of the LED-device
 	///
-	virtual ~LedDevicePhilipsHue();
+	~LedDevicePhilipsHue();
 
 	///
 	/// @brief Constructs the LED-device
@@ -331,7 +331,7 @@ public:
 	///
 	/// @return A JSON structure holding a list of devices found
 	///
-	virtual QJsonObject discover() override;
+	QJsonObject discover() override;
 
 	///
 	/// @brief Get the Hue Bridge device's resource properties
@@ -348,7 +348,7 @@ public:
 	/// @param[in] params Parameters to query device
 	/// @return A JSON structure holding the device's properties
 	///
-	virtual QJsonObject getProperties(const QJsonObject& params) override;
+	QJsonObject getProperties(const QJsonObject& params) override;
 
 	///
 	/// @brief Send an update to the device to identify it.
@@ -357,7 +357,7 @@ public:
 	///
 	/// @param[in] params Parameters to address device
 	///
-	virtual void identify(const QJsonObject& params) override;
+	void identify(const QJsonObject& params) override;
 
 	///
 	/// @brief Get the number of LEDs supported by the device.
@@ -378,7 +378,7 @@ public slots:
 	///
 	/// Includes switching-off the device and stopping refreshes.
 	///
-	virtual void stop() override;
+	void stop() override;
 
 protected:
 
@@ -388,21 +388,21 @@ protected:
 	/// @param deviceConfig Device's configuration in JSON
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Opens the output device
 	///
 	/// @return Zero on success (i.e. device is ready), else negative
 	///
-	virtual int open() override;
+	int open() override;
 
 	///
 	/// @brief Closes the output device.
 	///
 	/// @return Zero on success (i.e. device is closed), else negative
 	///
-	virtual int close() override;
+	int close() override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -410,7 +410,7 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb>& ledValues) override;
+	int write(const std::vector<ColorRgb>& ledValues) override;
 
 	///
 	/// @brief Switch the LEDs on.
@@ -421,7 +421,7 @@ protected:
 	///
 	/// @return True if success
 	///
-	//virtual bool switchOn() override;
+	//bool switchOn() override;
 
 	///
 	/// @brief Switch the LEDs off.
@@ -432,7 +432,7 @@ protected:
 	///
 	/// @return True, if success
 	///
-	virtual bool switchOff() override;
+	bool switchOff() override;
 
 	///
 	/// @brief Power-/turn on the LED-device.
@@ -441,7 +441,7 @@ protected:
 	///
 	/// @return True, if success
 	///
-	virtual bool powerOn() override;
+	bool powerOn() override;
 
 	///
 	/// @brief Power-/turn off the LED-device.
@@ -451,7 +451,7 @@ protected:
 	///
 	/// @return True, if success
 	///
-	virtual bool powerOff() override;
+	bool powerOff() override;
 
 	///
 	/// @brief Store the device's original state.
@@ -460,7 +460,7 @@ protected:
 	///
 	/// @return True if success
 	///
-	virtual bool storeState() override;
+	bool storeState() override;
 
 	///
 	/// @brief Restore the device's original state.
@@ -470,7 +470,7 @@ protected:
 	///
 	/// @return True, if success
 	///
-	virtual bool restoreState() override;
+	bool restoreState() override;
 
 private slots:
 
@@ -515,7 +515,7 @@ private:
 
 	void stopBlackTimeoutTimer();
 
-	QByteArray prepareStreamData();
+	QByteArray prepareStreamData() const;
 
 	///
 	bool _switchOffOnBlack;

libsrc/leddevice/dev_net/LedDeviceTpm2net.h

@@ -34,7 +34,7 @@ private:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -42,7 +42,7 @@ private:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 	int _tpm2_max;
 	int _tpm2ByteCount;

libsrc/leddevice/dev_net/LedDeviceUdpArtNet.h

@@ -67,7 +67,7 @@ private:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -75,7 +75,7 @@ private:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 	///
 	/// @brief Generate Art-Net communication header

libsrc/leddevice/dev_net/LedDeviceUdpE131.h

@@ -112,7 +112,7 @@ private:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -120,7 +120,7 @@ private:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 	///
 	/// @brief Generate E1.31 communication header

libsrc/leddevice/dev_net/LedDeviceUdpH801.h

@@ -35,7 +35,7 @@ private:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -43,7 +43,7 @@ private:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 	QList<int> _ids;
 	QByteArray _message;

libsrc/leddevice/dev_net/LedDeviceUdpRaw.h

@@ -34,7 +34,7 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -42,7 +42,7 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 };
 
 #endif // LEDEVICEUDPRAW_H

libsrc/leddevice/dev_net/LedDeviceWled.cpp

@@ -111,7 +111,7 @@ bool LedDeviceWled::init(const QJsonObject &deviceConfig)
 	return isInitOK;
 }
 
-bool LedDeviceWled::initRestAPI(const QString &hostname, int port )
+bool LedDeviceWled::initRestAPI(const QString &hostname, int port)
 {
 	Debug(_log, "");
 	bool isInitOK = false;
@@ -128,7 +128,7 @@ bool LedDeviceWled::initRestAPI(const QString &hostname, int port )
 	return isInitOK;
 }
 
-QString LedDeviceWled::getOnOffRequest (bool isOn ) const
+QString LedDeviceWled::getOnOffRequest(bool isOn) const
 {
 	QString state = isOn ? STATE_VALUE_TRUE : STATE_VALUE_FALSE;
 	return QString( "{\"%1\":%2}" ).arg( STATE_ON, state);

libsrc/leddevice/dev_net/LedDeviceWled.h

@@ -25,7 +25,7 @@ public:
 	///
 	/// @brief Destructor of the WLED-device
 	///
-	virtual ~LedDeviceWled() override;
+	~LedDeviceWled() override;
 
 	///
 	/// @brief Constructs the WLED-device
@@ -39,7 +39,7 @@ public:
 	///
 	/// @return A JSON structure holding a list of devices found
 	///
-	virtual QJsonObject discover() override;
+	QJsonObject discover() override;
 
 	///
 	/// @brief Get the WLED device's resource properties
@@ -55,7 +55,7 @@ public:
 	/// @param[in] params Parameters to query device
 	/// @return A JSON structure holding the device's properties
 	///
-	virtual QJsonObject getProperties(const QJsonObject& params) override;
+	QJsonObject getProperties(const QJsonObject& params) override;
 
 	///
 	/// @brief Send an update to the WLED device to identify it.
@@ -69,7 +69,7 @@ public:
 	///
 	/// @param[in] params Parameters to address device
 	///
-	virtual void identify(const QJsonObject& params) override;
+	void identify(const QJsonObject& params) override;
 
 protected:
 
@@ -79,7 +79,7 @@ protected:
 	/// @param[in] deviceConfig the JSON device configuration
 	/// @return True, if success
 	///
-	virtual bool init(const QJsonObject &deviceConfig) override;
+	bool init(const QJsonObject &deviceConfig) override;
 
 	///
 	/// @brief Writes the RGB-Color values to the LEDs.
@@ -87,21 +87,21 @@ protected:
 	/// @param[in] ledValues The RGB-color per LED
 	/// @return Zero on success, else negative
 	///
-	virtual int write(const std::vector<ColorRgb> & ledValues) override;
+	int write(const std::vector<ColorRgb> & ledValues) override;
 
 	///
 	/// @brief Power-/turn on the WLED device.
 	///
 	/// @brief Store the device's original state.
 	///
-	virtual bool powerOn() override;
+	bool powerOn() override;
 
 	///
 	/// @brief Power-/turn off the WLED device.
 	///
 	/// @return True if success
 	///
-	virtual bool powerOff() override;
+	bool powerOff() override;
 
 private: