| /* |
| * 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. |
| */ |
| |
| #include "webrtc/modules/congestion_controller/probing_interval_estimator.h" |
| |
| #include <algorithm> |
| #include <utility> |
| |
| namespace webrtc { |
| |
| namespace { |
| constexpr int kMinIntervalMs = 2000; |
| constexpr int kDefaultIntervalMs = 3000; |
| constexpr int kMaxIntervalMs = 50000; |
| } |
| |
| ProbingIntervalEstimator::ProbingIntervalEstimator( |
| const AimdRateControl* aimd_rate_control) |
| : ProbingIntervalEstimator(kMinIntervalMs, |
| kMaxIntervalMs, |
| kDefaultIntervalMs, |
| aimd_rate_control) {} |
| |
| ProbingIntervalEstimator::ProbingIntervalEstimator( |
| int64_t min_interval_ms, |
| int64_t max_interval_ms, |
| int64_t default_interval_ms, |
| const AimdRateControl* aimd_rate_control) |
| : min_interval_ms_(min_interval_ms), |
| max_interval_ms_(max_interval_ms), |
| default_interval_ms_(default_interval_ms), |
| aimd_rate_control_(aimd_rate_control) {} |
| |
| int64_t ProbingIntervalEstimator::GetIntervalMs() const { |
| rtc::Optional<int> bitrate_drop = |
| aimd_rate_control_->GetLastBitrateDecreaseBps(); |
| int increase_rate = aimd_rate_control_->GetNearMaxIncreaseRateBps(); |
| |
| if (!bitrate_drop || increase_rate <= 0) |
| return default_interval_ms_; |
| |
| return std::min( |
| max_interval_ms_, |
| std::max(static_cast<int64_t>(1000 * (*bitrate_drop) / increase_rate), |
| min_interval_ms_)); |
| } |
| |
| } // namespace webrtc |