| /* |
| * Copyright (c) 2013 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 WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_OVERUSE_ESTIMATOR_H_ |
| #define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_OVERUSE_ESTIMATOR_H_ |
| |
| #include <list> |
| |
| #include "webrtc/base/constructormagic.h" |
| #include "webrtc/common_types.h" |
| #include "webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h" |
| |
| namespace webrtc { |
| |
| class OveruseEstimator { |
| public: |
| explicit OveruseEstimator(const OverUseDetectorOptions& options); |
| ~OveruseEstimator(); |
| |
| // Update the estimator with a new sample. The deltas should represent deltas |
| // between timestamp groups as defined by the InterArrival class. |
| // |current_hypothesis| should be the hypothesis of the over-use detector at |
| // this time. |
| void Update(int64_t t_delta, |
| double ts_delta, |
| int size_delta, |
| BandwidthUsage current_hypothesis, |
| int64_t now_ms); |
| |
| // Returns the estimated noise/jitter variance in ms^2. |
| double var_noise() const { |
| return var_noise_; |
| } |
| |
| // Returns the estimated inter-arrival time delta offset in ms. |
| double offset() const { |
| return offset_; |
| } |
| |
| // Returns the number of deltas which the current over-use estimator state is |
| // based on. |
| unsigned int num_of_deltas() const { |
| return num_of_deltas_; |
| } |
| |
| private: |
| double UpdateMinFramePeriod(double ts_delta); |
| void UpdateNoiseEstimate(double residual, double ts_delta, bool stable_state); |
| |
| // Must be first member variable. Cannot be const because we need to be |
| // copyable. |
| OverUseDetectorOptions options_; |
| uint16_t num_of_deltas_; |
| double slope_; |
| double offset_; |
| double prev_offset_; |
| double E_[2][2]; |
| double process_noise_[2]; |
| double avg_noise_; |
| double var_noise_; |
| std::list<double> ts_delta_hist_; |
| |
| RTC_DISALLOW_COPY_AND_ASSIGN(OveruseEstimator); |
| }; |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_OVERUSE_ESTIMATOR_H_ |