| Zijie He | 6a63371a | 2017-11-03 23:06:41 | [diff] [blame] | 1 | // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef REMOTING_BASE_WEIGHTED_SAMPLES_H_ |
| 6 | #define REMOTING_BASE_WEIGHTED_SAMPLES_H_ |
| 7 | |
| 8 | #include <cstdint> |
| 9 | |
| 10 | namespace remoting { |
| 11 | |
| 12 | // Aggregates the samples and gives each of them a weight based on its age. This |
| 13 | // class can help to smooth the input data. |
| 14 | class WeightedSamples final { |
| 15 | public: |
| 16 | explicit WeightedSamples(double weight_factor); |
| 17 | ~WeightedSamples(); |
| 18 | |
| 19 | void Record(double value); |
| 20 | double WeightedAverage() const; |
| 21 | |
| 22 | private: |
| 23 | const double weight_factor_; |
| 24 | double weighted_sum_ = 0; |
| 25 | double weight_ = 0; |
| 26 | }; |
| 27 | |
| 28 | } // namespace remoting |
| 29 | #endif // REMOTING_BASE_WEIGHTED_SAMPLES_H_ |
