| /* |
| * 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 MODULES_CONGESTION_CONTROLLER_GOOG_CC_PROBE_BITRATE_ESTIMATOR_H_ |
| #define MODULES_CONGESTION_CONTROLLER_GOOG_CC_PROBE_BITRATE_ESTIMATOR_H_ |
| |
| #include <limits> |
| #include <map> |
| |
| #include "absl/types/optional.h" |
| #include "api/transport/network_types.h" |
| #include "api/units/data_rate.h" |
| |
| namespace webrtc { |
| class RtcEventLog; |
| |
| class ProbeBitrateEstimator { |
| public: |
| explicit ProbeBitrateEstimator(RtcEventLog* event_log); |
| ~ProbeBitrateEstimator(); |
| |
| // Should be called for every probe packet we receive feedback about. |
| // Returns the estimated bitrate if the probe completes a valid cluster. |
| absl::optional<DataRate> HandleProbeAndEstimateBitrate( |
| const PacketResult& packet_feedback); |
| |
| absl::optional<DataRate> FetchAndResetLastEstimatedBitrate(); |
| |
| private: |
| struct AggregatedCluster { |
| int num_probes = 0; |
| Timestamp first_send = Timestamp::PlusInfinity(); |
| Timestamp last_send = Timestamp::MinusInfinity(); |
| Timestamp first_receive = Timestamp::PlusInfinity(); |
| Timestamp last_receive = Timestamp::MinusInfinity(); |
| DataSize size_last_send = DataSize::Zero(); |
| DataSize size_first_receive = DataSize::Zero(); |
| DataSize size_total = DataSize::Zero(); |
| }; |
| |
| // Erases old cluster data that was seen before |timestamp|. |
| void EraseOldClusters(Timestamp timestamp); |
| |
| std::map<int, AggregatedCluster> clusters_; |
| RtcEventLog* const event_log_; |
| absl::optional<DataRate> estimated_data_rate_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_CONGESTION_CONTROLLER_GOOG_CC_PROBE_BITRATE_ESTIMATOR_H_ |