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/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_VIDEO_CODING_UTILITY_MOVING_AVERAGE_H_
#define WEBRTC_MODULES_VIDEO_CODING_UTILITY_MOVING_AVERAGE_H_
#include <vector>
#include "webrtc/api/optional.h"
namespace webrtc {
class MovingAverage {
public:
explicit MovingAverage(size_t s);
void AddSample(int sample);
rtc::Optional<int> GetAverage() const;
rtc::Optional<int> GetAverage(size_t num_samples) const;
void Reset();
size_t size() const;
private:
size_t count_ = 0;
int sum_ = 0;
std::vector<int> sum_history_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_VIDEO_CODING_UTILITY_MOVING_AVERAGE_H_