| /* |
| * Copyright (c) 2016 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_PACING_ALR_DETECTOR_H_ |
| #define WEBRTC_MODULES_PACING_ALR_DETECTOR_H_ |
| |
| #include "webrtc/common_types.h" |
| #include "webrtc/modules/pacing/paced_sender.h" |
| #include "webrtc/typedefs.h" |
| |
| namespace webrtc { |
| |
| // Application limited region detector is a class that utilizes signals of |
| // elapsed time and bytes sent to estimate whether network traffic is |
| // currently limited by the application's ability to generate traffic. |
| // |
| // AlrDetector provides a signal that can be utilized to adjust |
| // estimate bandwidth. |
| // Note: This class is not thread-safe. |
| class AlrDetector { |
| public: |
| AlrDetector(); |
| ~AlrDetector(); |
| void OnBytesSent(size_t bytes_sent, int64_t elapsed_time_ms); |
| // Set current estimated bandwidth. |
| void SetEstimatedBitrate(int bitrate_bps); |
| // Returns true if currently in application-limited region. |
| bool InApplicationLimitedRegion(); |
| |
| private: |
| size_t measurement_interval_bytes_sent_; |
| int64_t measurement_interval_elapsed_time_ms_; |
| int estimated_bitrate_bps_; |
| // Number of consecutive periods over which we observe traffic is application |
| // limited. |
| int application_limited_count_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_PACING_ALR_DETECTOR_H_ |