9d11764344
BUG=webrtc:7746
Test and fix for huge bwe drop after alr state.
BUG=webrtc:7746
Review-Url: https://codereview.webrtc.org/2931873002
Cr-Commit-Position: refs/heads/master@{#18692}
Committed: 37aa8ba616
patch from issue 2931873002 at patchset 320001 (http://crrev.com/2931873002#ps320001)
Review-Url: https://codereview.webrtc.org/2970653004
Cr-Commit-Position: refs/heads/master@{#19055}
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_CONGESTION_CONTROLLER_BITRATE_ESTIMATOR_H_
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#define WEBRTC_MODULES_CONGESTION_CONTROLLER_BITRATE_ESTIMATOR_H_
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#include <vector>
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#include "webrtc/rtc_base/optional.h"
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namespace webrtc {
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// Computes a bayesian estimate of the throughput given acks containing
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// the arrival time and payload size. Samples which are far from the current
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// estimate or are based on few packets are given a smaller weight, as they
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// are considered to be more likely to have been caused by, e.g., delay spikes
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// unrelated to congestion.
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class BitrateEstimator {
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public:
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BitrateEstimator();
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virtual ~BitrateEstimator();
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virtual void Update(int64_t now_ms, int bytes);
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virtual rtc::Optional<uint32_t> bitrate_bps() const;
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virtual void ExpectFastRateChange();
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private:
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float UpdateWindow(int64_t now_ms, int bytes, int rate_window_ms);
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int sum_;
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int64_t current_win_ms_;
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int64_t prev_time_ms_;
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float bitrate_estimate_;
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float bitrate_estimate_var_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_CONGESTION_CONTROLLER_BITRATE_ESTIMATOR_H_
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