194f40a2e7
The MovingAverage class was very specific to the QualityScaler. This commit generalizes the MovingAverage class to be useful in other situations as well, and adapts the QualityScaler to use the new MovingAverage. BUG=webrtc:6304 Review-Url: https://codereview.webrtc.org/2310853002 Cr-Commit-Position: refs/heads/master@{#14207}
36 lines
1021 B
C++
36 lines
1021 B
C++
/*
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* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_VIDEO_CODING_UTILITY_MOVING_AVERAGE_H_
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#define WEBRTC_MODULES_VIDEO_CODING_UTILITY_MOVING_AVERAGE_H_
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#include <vector>
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#include "webrtc/base/optional.h"
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namespace webrtc {
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class MovingAverage {
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public:
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explicit MovingAverage(size_t s);
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void AddSample(int sample);
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rtc::Optional<int> GetAverage() const;
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rtc::Optional<int> GetAverage(size_t num_samples) const;
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void Reset();
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size_t size() const;
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private:
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size_t count_ = 0;
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int sum_ = 0;
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std::vector<int> sum_history_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_VIDEO_CODING_UTILITY_MOVING_AVERAGE_H_
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