b7ce96470b
This makes it clearer this code not meant to be used as an API. I could not find any use of this in downstream code. BUG=webrtc:5095 TESTED=git cl try -c --bot=android_compile_rel --bot=linux_compile_rel --bot=win_compile_rel --bot=mac_compile_rel --bot=ios_rel --bot=linux_gn_rel --bot=win_x64_gn_rel --bot=mac_x64_gn_rel --bot=android_gn_rel -m tryserver.webrtc R=stefan@webrtc.org TBR=magjed@webrtc.org Review URL: https://codereview.webrtc.org/1440873005 . Cr-Commit-Position: refs/heads/master@{#10699}
72 lines
1.6 KiB
C++
72 lines
1.6 KiB
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 <list>
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#include "webrtc/typedefs.h"
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namespace webrtc {
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template<class T>
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class MovingAverage {
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public:
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MovingAverage();
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void AddSample(T sample);
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bool GetAverage(size_t num_samples, T* average);
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void Reset();
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int size();
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private:
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T sum_;
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std::list<T> samples_;
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};
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template<class T>
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MovingAverage<T>::MovingAverage() : sum_(static_cast<T>(0)) {
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}
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template<class T>
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void MovingAverage<T>::AddSample(T sample) {
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samples_.push_back(sample);
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sum_ += sample;
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}
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template<class T>
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bool MovingAverage<T>::GetAverage(size_t num_samples, T* avg) {
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if (num_samples > samples_.size())
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return false;
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// Remove old samples.
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while (num_samples < samples_.size()) {
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sum_ -= samples_.front();
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samples_.pop_front();
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}
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*avg = sum_ / static_cast<T>(num_samples);
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return true;
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}
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template<class T>
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void MovingAverage<T>::Reset() {
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sum_ = static_cast<T>(0);
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samples_.clear();
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}
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template<class T>
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int MovingAverage<T>::size() {
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return samples_.size();
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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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