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Side by Side Diff: webrtc/base/rate_limiter.h

Issue 2877023002: Move webrtc/{base => rtc_base} (Closed)
Patch Set: update presubmit.py and DEPS include rules Created 3 years, 5 months ago
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1 /* 1 /*
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 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 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 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 10
11 #ifndef WEBRTC_BASE_RATE_LIMITER_H_ 11 #ifndef WEBRTC_BASE_RATE_LIMITER_H_
12 #define WEBRTC_BASE_RATE_LIMITER_H_ 12 #define WEBRTC_BASE_RATE_LIMITER_H_
13 13
14 #include <limits>
15 14
16 #include "webrtc/base/constructormagic.h" 15 // This header is deprecated and is just left here temporarily during
17 #include "webrtc/base/criticalsection.h" 16 // refactoring. See https://bugs.webrtc.org/7634 for more details.
18 #include "webrtc/base/rate_statistics.h" 17 #include "webrtc/rtc_base/rate_limiter.h"
19
20 namespace webrtc {
21
22 class Clock;
23
24 // Class used to limit a bitrate, making sure the average does not exceed a
25 // maximum as measured over a sliding window. This class is thread safe; all
26 // methods will acquire (the same) lock befeore executing.
27 class RateLimiter {
28 public:
29 RateLimiter(const Clock* clock, int64_t max_window_ms);
30 ~RateLimiter();
31
32 // Try to use rate to send bytes. Returns true on success and if so updates
33 // current rate.
34 bool TryUseRate(size_t packet_size_bytes);
35
36 // Set the maximum bitrate, in bps, that this limiter allows to send.
37 void SetMaxRate(uint32_t max_rate_bps);
38
39 // Set the window size over which to measure the current bitrate.
40 // For example, irt retransmissions, this is typically the RTT.
41 // Returns true on success and false if window_size_ms is out of range.
42 bool SetWindowSize(int64_t window_size_ms);
43
44 private:
45 const Clock* const clock_;
46 rtc::CriticalSection lock_;
47 RateStatistics current_rate_ GUARDED_BY(lock_);
48 int64_t window_size_ms_ GUARDED_BY(lock_);
49 uint32_t max_rate_bps_ GUARDED_BY(lock_);
50
51 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(RateLimiter);
52 };
53
54 } // namespace webrtc
55 18
56 #endif // WEBRTC_BASE_RATE_LIMITER_H_ 19 #endif // WEBRTC_BASE_RATE_LIMITER_H_
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