Extract ImageResampler from X11Grabber

Former-commit-id: 63e95fa85fc0ef5a66f6eb8b396cf4b6370cf5dd

include/utils/ImageResampler.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <utils/VideoMode.h>
+#include <utils/PixelFormat.h>
+#include <utils/Image.h>
+#include <utils/ColorRgb.h>
+
+class ImageResampler
+{
+public:
+    ImageResampler();
+    ~ImageResampler();
+
+    void setHorizontalPixelDecimation(int decimator);
+
+    void setVerticalPixelDecimation(int decimator);
+
+    void setCropping(int cropLeft,
+                     int cropRight,
+                     int cropTop,
+                     int cropBottom);
+
+    void set3D(VideoMode mode);
+
+	void processImage(const uint8_t * data, int width, int height, int lineLength, PixelFormat pixelFormat,
+                      Image<ColorRgb> & outputImage) const;
+
+private:
+	static inline uint8_t clamp(int x);
+	static void yuv2rgb(uint8_t y, uint8_t u, uint8_t v, uint8_t & r, uint8_t & g, uint8_t & b);
+
+private:
+	int _horizontalDecimation;
+	int _verticalDecimation;
+	int _cropLeft;
+	int _cropRight;
+	int _cropTop;
+	int _cropBottom;
+	VideoMode _videoMode;
+};