|  | /* | 
|  | *  Copyright 2019 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 RTC_BASE_EXPERIMENTS_STABLE_TARGET_RATE_EXPERIMENT_H_ | 
|  | #define RTC_BASE_EXPERIMENTS_STABLE_TARGET_RATE_EXPERIMENT_H_ | 
|  |  | 
|  | #include "api/field_trials_view.h" | 
|  | #include "rtc_base/experiments/field_trial_parser.h" | 
|  |  | 
|  | namespace webrtc { | 
|  |  | 
|  | class StableTargetRateExperiment { | 
|  | public: | 
|  | StableTargetRateExperiment(const StableTargetRateExperiment&); | 
|  | StableTargetRateExperiment(StableTargetRateExperiment&&); | 
|  | static StableTargetRateExperiment ParseFromFieldTrials(); | 
|  | static StableTargetRateExperiment ParseFromKeyValueConfig( | 
|  | const FieldTrialsView* const key_value_config); | 
|  |  | 
|  | bool IsEnabled() const; | 
|  | double GetVideoHysteresisFactor() const; | 
|  | double GetScreenshareHysteresisFactor() const; | 
|  |  | 
|  | private: | 
|  | explicit StableTargetRateExperiment( | 
|  | const FieldTrialsView* const key_value_config, | 
|  | double default_video_hysteresis, | 
|  | double default_screenshare_hysteresis); | 
|  |  | 
|  | FieldTrialParameter<bool> enabled_; | 
|  | FieldTrialParameter<double> video_hysteresis_factor_; | 
|  | FieldTrialParameter<double> screenshare_hysteresis_factor_; | 
|  | }; | 
|  |  | 
|  | }  // namespace webrtc | 
|  |  | 
|  | #endif  // RTC_BASE_EXPERIMENTS_STABLE_TARGET_RATE_EXPERIMENT_H_ |