enable components at runtime + grabber refactoring (#160)

* implement enable/disable on runtime for:
- smoothing
- kodi
- udplistener
- boblight

* implement enable/disable for forwarder
refactor component

* - implement grabber enable/disable at runtime
- big grabber refactoring. now with common base class for all grabbers

* implement enable/disable at runtime for bb detector

* osx fix

* try to fix cutted travis output for osx build

include/hyperion/GrabberWrapper.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <QObject>
+#include <QTimer>
+#include <string>
+
+#include <utils/Logger.h>
+#include <utils/Components.h>
+#include <hyperion/Hyperion.h>
+
+class ImageProcessor;
+
+class GrabberWrapper : public QObject
+{
+	Q_OBJECT
+public: 
+	GrabberWrapper(std::string grabberName, const int priority);
+	
+	virtual ~GrabberWrapper();
+	
+	virtual bool start();
+	virtual void stop();
+
+public slots:
+	void componentStateChanged(const hyperion::Components component, bool enable);
+	virtual void action() = 0;
+
+signals:
+	void emitImage(int priority, const Image<ColorRgb> & image, const int timeout_ms);
+
+protected:
+	std::string _grabberName;
+	
+	/// Pointer to Hyperion for writing led values
+	Hyperion * _hyperion;
+
+	/// The priority of the led colors
+	const int _priority;
+
+	/// The timer for generating events with the specified update rate
+	QTimer _timer;
+
+	/// The Logger instance
+	Logger * _log;
+	
+	// forwarding enabled
+	bool _forward;
+
+	/// The processor for transforming images to led colors
+	ImageProcessor * _processor;
+
+};

include/hyperion/Hyperion.h

@@ -156,7 +156,7 @@ public:
 	/// @param component The component [SMOOTHING, BLACKBORDER, KODICHECKER, FORWARDER, UDPLISTENER, BOBLIGHT_SERVER, GRABBER]
 	/// @param state The state of the component [true | false]
 	///
-	void setComponentState(const Components component, const bool state);
+	void setComponentState(const hyperion::Components component, const bool state);
 public slots:
 	///
 	/// Writes a single color to all the leds for the given time and priority
@@ -294,6 +294,8 @@ signals:
 	/// This signal will not be emitted when a priority channel time out
 	void allChannelsCleared();
 
+	void componentStateChanged(const hyperion::Components component, bool enabled);
+
 private slots:
 	///
 	/// Updates the priority muxer with the current time and (re)writes the led color with applied

include/hyperion/ImageProcessor.h

@@ -41,6 +41,9 @@ public:
 	/// Enable or disable the black border detector
 	void enableBlackBorderDetector(bool enable);
 
+	/// Returns starte of black border detector
+	bool blackBorderDetectorEnabled();
+	
 	///
 	/// Processes the image to a list of led colors. This will update the size of the buffer-image
 	/// if required and call the image-to-leds mapping to determine the mean color per led.
@@ -104,7 +107,6 @@ private:
 	/// given led-string specification
 	///
 	/// @param[in] ledString  The led-string specification
-	/// @param[in] enableBlackBorderDetector Flag indicating if the blacborder detector should be enabled
 	/// @param[in] blackborderThreshold The threshold which the blackborder detector should use
 	///
 	ImageProcessor(const LedString &ledString, const Json::Value &blackborderConfig);