| /* | 
 |  *  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_MIN_VIDEO_BITRATE_EXPERIMENT_H_ | 
 | #define RTC_BASE_EXPERIMENTS_MIN_VIDEO_BITRATE_EXPERIMENT_H_ | 
 |  | 
 | #include "absl/types/optional.h" | 
 | #include "api/units/data_rate.h" | 
 | #include "api/video/video_codec_type.h" | 
 |  | 
 | namespace webrtc { | 
 |  | 
 | extern const int kDefaultMinVideoBitrateBps; | 
 |  | 
 | // Return the experiment-driven minimum video bitrate. | 
 | // If no experiment is effective, returns nullopt. | 
 | absl::optional<DataRate> GetExperimentalMinVideoBitrate(VideoCodecType type); | 
 |  | 
 | }  // namespace webrtc | 
 |  | 
 | #endif  // RTC_BASE_EXPERIMENTS_MIN_VIDEO_BITRATE_EXPERIMENT_H_ |