moving_average.h

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#ifndef SENSP_TRANSFORMS_MOVING_AVERAGE_H_
#define SENSP_TRANSFORMS_MOVING_AVERAGE_H_
 
#include <vector>
 
#include "sensesp/ui/config_item.h"
#include "transform.h"
 
namespace sensesp {
 
// y = k * 1/n * \sum_k=1^n(x_k)
class MovingAverage : public FloatTransform {
 public:
  MovingAverage(int sample_size, float multiplier = 1.0,
                const String& config_path = "");
  virtual void set(const float& input) override;
  virtual bool to_json(JsonObject& root) override;
  virtual bool from_json(const JsonObject& config) override;
 
 private:
  std::vector<float> buf_{};
  int ptr_ = 0;
  int sample_size_;
  float multiplier_;
  float sum_ = 0;
  bool initialized_;
};
 
const String ConfigSchema(const MovingAverage& obj);
 
inline bool ConfigRequiresRestart(const MovingAverage& obj) {
  return true;
}
 
}  // namespace sensesp
#endif