80ed35e21c
Now ProbeController can send periodic bandwidth probes when in application-limited region. This will allow to maintain correct bottleneck bandwidth estimate, even not all bandwidth is being used. The feature is not enabled by default, but can be enabled with a flag. Interval between probes is currently set to 5 seconds. BUG=webrtc:6332 Review-Url: https://codereview.webrtc.org/2504023002 Cr-Commit-Position: refs/heads/master@{#15279}
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
/*
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* Copyright (c) 2016 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_PACING_ALR_DETECTOR_H_
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#define WEBRTC_MODULES_PACING_ALR_DETECTOR_H_
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#include "webrtc/base/rate_statistics.h"
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#include "webrtc/common_types.h"
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#include "webrtc/modules/pacing/paced_sender.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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// Application limited region detector is a class that utilizes signals of
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// elapsed time and bytes sent to estimate whether network traffic is
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// currently limited by the application's ability to generate traffic.
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//
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// AlrDetector provides a signal that can be utilized to adjust
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// estimate bandwidth.
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// Note: This class is not thread-safe.
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class AlrDetector {
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public:
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AlrDetector();
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~AlrDetector();
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void OnBytesSent(size_t bytes_sent, int64_t now_ms);
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// Set current estimated bandwidth.
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void SetEstimatedBitrate(int bitrate_bps);
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// Returns time in milliseconds when the current application-limited region
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// started or empty result if the sender is currently not application-limited.
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rtc::Optional<int64_t> GetApplicationLimitedRegionStartTime() const;
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private:
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RateStatistics rate_;
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int estimated_bitrate_bps_ = 0;
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// Non-empty in ALR state.
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rtc::Optional<int64_t> alr_started_time_ms_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_PACING_ALR_DETECTOR_H_
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