merging refactor (replacing)

slsDetectorServers/slsDetectorServer/common.h

@@ -0,0 +1,44 @@
+#pragma once
+
+/**
+ * Convert a value from a range to a different range (eg voltage to dac or vice versa)
+ * @param inputMin input minimum
+ * @param inputMax input maximum
+ * @param outputMin output minimum
+ * @param outputMax output maximum
+ * @param inputValue input value
+ * @param outputValue pointer to output value
+ * @returns FAIL if input value is out of bounds, else OK
+ */
+int ConvertToDifferentRange(int inputMin, int inputMax, int outputMin, int outputMax,
+        int inputValue, int* outputValue) {
+    FILE_LOG(logDEBUG1, (" Input Value: %d (Input:(%d - %d), Output:(%d - %d))\n",
+            inputValue, inputMin, inputMax, outputMin, outputMax));
+
+    // validate within bounds
+    // eg. MAX1932 range is v(60 - 200) to dac(255 - 1), here inputMin > inputMax (when dac to voltage)
+    int smaller = inputMin;
+    int bigger = inputMax;
+    if (smaller > bigger) {
+        smaller = inputMax;
+        bigger = inputMin;
+    }
+    if ((inputValue < smaller) || (inputValue > bigger)) {
+        FILE_LOG(logERROR, ("Input Value is outside bounds (%d to %d): %d\n", inputValue, smaller, bigger));
+        *outputValue = -1;
+        return FAIL;
+    }
+
+    double value = ((double)(inputValue - inputMin) * (double)(outputMax - outputMin))
+            / (double)(inputMax - inputMin) + outputMin;
+
+    // double to integer conversion (if decimal places, round to integer)
+    if ((value - (int)value) > 0.0001) {
+        value += 0.5;
+    }
+    *outputValue = value;
+
+    FILE_LOG(logDEBUG1, (" Converted Output Value: %d\n", *outputValue));
+    return OK;
+}
+