| * Copyright (c) 2016 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 VIDEO_QUALITY_THRESHOLD_H_ |
| #define VIDEO_QUALITY_THRESHOLD_H_ |
| #include "api/optional.h" |
| // Both thresholds are inclusive, i.e. measurement >= high signifies a high |
| // state, while measurement <= low signifies a low state. |
| QualityThreshold(int low_threshold, |
| void AddMeasurement(int measurement); |
| rtc::Optional<bool> IsHigh() const; |
| rtc::Optional<double> CalculateVariance() const; |
| rtc::Optional<double> FractionHigh(int min_required_samples) const; |
| const std::unique_ptr<int[]> buffer_; |
| const int max_measurements_; |
| const int low_threshold_; |
| const int high_threshold_; |
| rtc::Optional<bool> is_high_; |
| #endif // VIDEO_QUALITY_THRESHOLD_H_ |