Added simple QT-based grabber.

Moved ImageToLedsMap from include to libsrc.
Moved instantiation of objects to Hyperion (no JSON required outside this class).

include/hyperion/ImageProcessor.h

@@ -0,0 +1,72 @@
+
+#pragma once
+
+// Utils includes
+#include <utils/RgbImage.h>
+
+#include <hyperion/LedString.h>
+#include <hyperion/ImageProcessorFactory.h>
+
+// Forward class declaration
+namespace hyperion { class ImageToLedsMap;
+					 class ColorTransform; }
+
+/**
+ * The ImageProcessor translates an RGB-image to RGB-values for the leds. The processing is
+ * performed in two steps. First the average color per led-region is computed. Second a
+ * color-tranform is applied based on a gamma-correction.
+ */
+class ImageProcessor
+{
+public:
+	/**
+	 * 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.
+	 *
+	 * @param[in] image  The image to translate to led values
+	 *
+	 * @return The color value per led
+	 */
+	std::vector<RgbColor> process(const RgbImage& image);
+
+	// 'IN PLACE' processing functions
+
+	/**
+	 * Specifies the width and height of 'incomming' images. This will resize the buffer-image to
+	 * match the given size.
+	 * NB All earlier obtained references will be invalid.
+	 *
+	 * @param[in] width   The new width of the buffer-image
+	 * @param[in] height  The new height of the buffer-image
+	 */
+	void setSize(const unsigned width, const unsigned height);
+
+	/**
+	 * Returns a reference of the underlying image-buffer. This can be used to write data directly
+	 * into the buffer, avoiding a copy inside the process method.
+	 *
+	 * @return The reference of the underlying image-buffer.
+	 */
+	RgbImage& image();
+
+	/**
+	 * Determines the led colors of the image in the buffer.
+	 *
+	 * @param[out] ledColors  The color value per led
+	 */
+	void inplace_process(std::vector<RgbColor>& ledColors);
+
+private:
+	friend class ImageProcessorFactory;
+
+	ImageProcessor(const LedString &ledString);
+
+	~ImageProcessor();
+
+private:
+	const LedString mLedString;
+
+	RgbImage *mBuffer;
+	hyperion::ImageToLedsMap* mImageToLeds;
+};
+