| /* |
| * Copyright (c) 2012 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. |
| * |
| * FEC and NACK added bitrate is handled outside class |
| */ |
| |
| #ifndef MODULES_BITRATE_CONTROLLER_SEND_SIDE_BANDWIDTH_ESTIMATION_H_ |
| #define MODULES_BITRATE_CONTROLLER_SEND_SIDE_BANDWIDTH_ESTIMATION_H_ |
| |
| #include <deque> |
| #include <utility> |
| #include <vector> |
| |
| #include "modules/rtp_rtcp/include/rtp_rtcp_defines.h" |
| |
| namespace webrtc { |
| |
| class RtcEventLog; |
| |
| class SendSideBandwidthEstimation { |
| public: |
| SendSideBandwidthEstimation() = delete; |
| explicit SendSideBandwidthEstimation(RtcEventLog* event_log); |
| virtual ~SendSideBandwidthEstimation(); |
| |
| void CurrentEstimate(int* bitrate, uint8_t* loss, int64_t* rtt) const; |
| |
| // Call periodically to update estimate. |
| void UpdateEstimate(int64_t now_ms); |
| |
| // Call when we receive a RTCP message with TMMBR or REMB. |
| void UpdateReceiverEstimate(int64_t now_ms, uint32_t bandwidth); |
| |
| // Call when a new delay-based estimate is available. |
| void UpdateDelayBasedEstimate(int64_t now_ms, uint32_t bitrate_bps); |
| |
| // Call when we receive a RTCP message with a ReceiveBlock. |
| void UpdateReceiverBlock(uint8_t fraction_loss, |
| int64_t rtt_ms, |
| int number_of_packets, |
| int64_t now_ms); |
| |
| // Call when we receive a RTCP message with a ReceiveBlock. |
| void UpdatePacketsLost(int packets_lost, |
| int number_of_packets, |
| int64_t now_ms); |
| |
| // Call when we receive a RTCP message with a ReceiveBlock. |
| void UpdateRtt(int64_t rtt, int64_t now_ms); |
| |
| void SetBitrates(int send_bitrate, |
| int min_bitrate, |
| int max_bitrate); |
| void SetSendBitrate(int bitrate); |
| void SetMinMaxBitrate(int min_bitrate, int max_bitrate); |
| int GetMinBitrate() const; |
| |
| private: |
| enum UmaState { kNoUpdate, kFirstDone, kDone }; |
| |
| bool IsInStartPhase(int64_t now_ms) const; |
| |
| void UpdateUmaStatsPacketsLost(int64_t now_ms, int packets_lost); |
| |
| // Updates history of min bitrates. |
| // After this method returns min_bitrate_history_.front().second contains the |
| // min bitrate used during last kBweIncreaseIntervalMs. |
| void UpdateMinHistory(int64_t now_ms); |
| |
| // Cap |bitrate_bps| to [min_bitrate_configured_, max_bitrate_configured_] and |
| // set |current_bitrate_bps_| to the capped value and updates the event log. |
| void CapBitrateToThresholds(int64_t now_ms, uint32_t bitrate_bps); |
| |
| std::deque<std::pair<int64_t, uint32_t> > min_bitrate_history_; |
| |
| // incoming filters |
| int lost_packets_since_last_loss_update_; |
| int expected_packets_since_last_loss_update_; |
| |
| uint32_t current_bitrate_bps_; |
| uint32_t min_bitrate_configured_; |
| uint32_t max_bitrate_configured_; |
| int64_t last_low_bitrate_log_ms_; |
| |
| bool has_decreased_since_last_fraction_loss_; |
| int64_t last_feedback_ms_; |
| int64_t last_packet_report_ms_; |
| int64_t last_timeout_ms_; |
| uint8_t last_fraction_loss_; |
| uint8_t last_logged_fraction_loss_; |
| int64_t last_round_trip_time_ms_; |
| |
| uint32_t bwe_incoming_; |
| uint32_t delay_based_bitrate_bps_; |
| int64_t time_last_decrease_ms_; |
| int64_t first_report_time_ms_; |
| int initially_lost_packets_; |
| int bitrate_at_2_seconds_kbps_; |
| UmaState uma_update_state_; |
| UmaState uma_rtt_state_; |
| std::vector<bool> rampup_uma_stats_updated_; |
| RtcEventLog* event_log_; |
| int64_t last_rtc_event_log_ms_; |
| bool in_timeout_experiment_; |
| float low_loss_threshold_; |
| float high_loss_threshold_; |
| uint32_t bitrate_threshold_bps_; |
| }; |
| } // namespace webrtc |
| #endif // MODULES_BITRATE_CONTROLLER_SEND_SIDE_BANDWIDTH_ESTIMATION_H_ |