1 /*
2  *  Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef RTC_BASE_EXPERIMENTS_ALR_EXPERIMENT_H_
12 #define RTC_BASE_EXPERIMENTS_ALR_EXPERIMENT_H_
13 
14 #include <stdint.h>
15 
16 #include "absl/types/optional.h"
17 #include "api/transport/webrtc_key_value_config.h"
18 
19 namespace webrtc {
20 struct AlrExperimentSettings {
21  public:
22   float pacing_factor;
23   int64_t max_paced_queue_time;
24   int alr_bandwidth_usage_percent;
25   int alr_start_budget_level_percent;
26   int alr_stop_budget_level_percent;
27   // Will be sent to the receive side for stats slicing.
28   // Can be 0..6, because it's sent as a 3 bits value and there's also
29   // reserved value to indicate absence of experiment.
30   int group_id;
31 
32   static const char kScreenshareProbingBweExperimentName[];
33   static const char kStrictPacingAndProbingExperimentName[];
34   static absl::optional<AlrExperimentSettings> CreateFromFieldTrial(
35       const char* experiment_name);
36   static absl::optional<AlrExperimentSettings> CreateFromFieldTrial(
37       const WebRtcKeyValueConfig& key_value_config,
38       const char* experiment_name);
39   static bool MaxOneFieldTrialEnabled();
40   static bool MaxOneFieldTrialEnabled(
41       const WebRtcKeyValueConfig& key_value_config);
42 
43  private:
44   AlrExperimentSettings() = default;
45 };
46 }  // namespace webrtc
47 
48 #endif  // RTC_BASE_EXPERIMENTS_ALR_EXPERIMENT_H_
49