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1 /* | |
2 * Copyright (c) 2017 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 WEBRTC_MODULES_CONGESTION_CONTROLLER_ACKNOWLEDGE_BITRATE_ESTIMATOR_H_ | |
12 #define WEBRTC_MODULES_CONGESTION_CONTROLLER_ACKNOWLEDGE_BITRATE_ESTIMATOR_H_ | |
13 | |
14 #include <vector> | |
15 | |
16 #include "webrtc/base/optional.h" | |
17 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" | |
18 | |
19 namespace webrtc { | |
20 | |
21 // Computes a bayesian estimate of the throughput given acks containing | |
22 // the arrival time and payload size. Samples which are far from the current | |
23 // estimate or are based on few packets are given a smaller weight, as they | |
24 // are considered to be more likely to have been caused by, e.g., delay spikes | |
25 // unrelated to congestion. | |
26 class AcknowledgedBitrateEstimator { | |
27 public: | |
28 AcknowledgedBitrateEstimator(); | |
29 void IncomingPacketFeedbackVector( | |
30 const std::vector<PacketFeedback>& packet_feedback_vector); | |
philipel
2017/06/02 12:32:40
Isn't it possible to forward declare PacketFeedbac
tschumi
2017/06/02 13:13:04
Sure.
Done
| |
31 | |
32 rtc::Optional<uint32_t> bitrate_bps() const; | |
33 | |
34 private: | |
35 void Update(int64_t now_ms, int bytes); | |
36 float UpdateWindow(int64_t now_ms, int bytes, int rate_window_ms); | |
37 int sum_; | |
38 int64_t current_win_ms_; | |
39 int64_t prev_time_ms_; | |
40 float bitrate_estimate_; | |
41 float bitrate_estimate_var_; | |
42 }; | |
43 | |
44 } // namespace webrtc | |
45 | |
46 #endif // WEBRTC_MODULES_CONGESTION_CONTROLLER_ACKNOWLEDGE_BITRATE_ESTIMATOR_H_ | |
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