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src/RunningDiffAverage.h

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+//
+// Created by Stepan Usatiuk on 12.05.2023.
+//
+
+#ifndef SEMBACKUP_RUNNINGDIFFAVERAGE_H
+#define SEMBACKUP_RUNNINGDIFFAVERAGE_H
+
+#include <functional>
+
+#include "RunningAverage.h"
+
+/// Computes the rolling average of differences between last sampled and currently sampled numbers
+class RunningDiffAverage {
+public:
+    ///
+    /// \param getFunc Function that samples the value
+    /// \param max     Max number of samples to average
+    /// \param ms      Sampling period
+    RunningDiffAverage(std::function<unsigned long long()> getFunc, int max, int ms);
+
+    /// Returns the average
+    unsigned long long get();
+
+private:
+    unsigned long long prev = 0;  ///< Previously sampled value
+    RunningAverage runningAverage;///< Backing RunningAverage
+};
+
+
+#endif//SEMBACKUP_RUNNINGDIFFAVERAGE_H