Add support for RealtekBridgeController

MathUtils.cpp

@@ -0,0 +1,24 @@
+/*---------------------------------------------------------*\
+| MathUtils.cpp                                             |
+|                                                           |
+|   Math utility functions                                  |
+|                                                           |
+|   This file is part of the OpenRGB project                |
+|   SPDX-License-Identifier: GPL-2.0-or-later               |
+\*---------------------------------------------------------*/
+
+#include <math.h>
+#include "MathUtils.h"
+
+int MathUtils::IntInterpolate(int y0, int y1, int x0, int x1, int x)
+{
+    if(x1 == x0)
+        return y0;
+
+    if(y0 == y1)
+        return y0;
+
+    double t = (double)(x - x0) / (double)(x1 - x0);
+    double y = y0 * (1.0 - t) + y1 * t;
+    return (int)round(y);
+}