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Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/rtc_base/experiments/normalize_simulcast_size_experiment.cc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/third_party/libwebrtc/rtc_base/experiments/normalize_simulcast_size_experiment.cc b/third_party/libwebrtc/rtc_base/experiments/normalize_simulcast_size_experiment.cc new file mode 100644 index 0000000000..ce817a0797 --- /dev/null +++ b/third_party/libwebrtc/rtc_base/experiments/normalize_simulcast_size_experiment.cc @@ -0,0 +1,49 @@ +/* + * Copyright 2018 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. + */ + +#include "rtc_base/experiments/normalize_simulcast_size_experiment.h" + +#include <stdio.h> + +#include <string> + +#include "rtc_base/logging.h" +#include "system_wrappers/include/field_trial.h" + +namespace webrtc { +namespace { +constexpr char kFieldTrial[] = "WebRTC-NormalizeSimulcastResolution"; +constexpr int kMinSetting = 0; +constexpr int kMaxSetting = 5; +} // namespace + +absl::optional<int> NormalizeSimulcastSizeExperiment::GetBase2Exponent() { + if (!webrtc::field_trial::IsEnabled(kFieldTrial)) + return absl::nullopt; + + const std::string group = webrtc::field_trial::FindFullName(kFieldTrial); + if (group.empty()) + return absl::nullopt; + + int exponent; + if (sscanf(group.c_str(), "Enabled-%d", &exponent) != 1) { + RTC_LOG(LS_WARNING) << "No parameter provided."; + return absl::nullopt; + } + + if (exponent < kMinSetting || exponent > kMaxSetting) { + RTC_LOG(LS_WARNING) << "Unsupported exp value provided, value ignored."; + return absl::nullopt; + } + + return absl::optional<int>(exponent); +} + +} // namespace webrtc |