1 /* 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. 3 * 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 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_REMOTE_ESTIMATOR_PROXY_H_ 12 #define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_REMOTE_ESTIMATOR_PROXY_H_ 13 14 #include <map> 15 #include <vector> 16 17 #include "webrtc/base/criticalsection.h" 18 #include "webrtc/modules/include/module_common_types.h" 19 #include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h" 20 21 namespace webrtc { 22 23 class Clock; 24 class PacketRouter; 25 namespace rtcp { 26 class TransportFeedback; 27 } 28 29 // Class used when send-side BWE is enabled: This proxy is instantiated on the 30 // receive side. It buffers a number of receive timestamps and then sends 31 // transport feedback messages back too the send side. 32 33 class RemoteEstimatorProxy : public RemoteBitrateEstimator { 34 public: 35 RemoteEstimatorProxy(Clock* clock, PacketRouter* packet_router); 36 virtual ~RemoteEstimatorProxy(); 37 38 void IncomingPacketFeedbackVector( 39 const std::vector<PacketInfo>& packet_feedback_vector) override; 40 void IncomingPacket(int64_t arrival_time_ms, 41 size_t payload_size, 42 const RTPHeader& header, 43 bool was_paced) override; 44 void RemoveStream(unsigned int ssrc) override; 45 bool LatestEstimate(std::vector<unsigned int>* ssrcs, 46 unsigned int* bitrate_bps) const override; 47 bool GetStats(ReceiveBandwidthEstimatorStats* output) const override; OnRttUpdate(int64_t avg_rtt_ms,int64_t max_rtt_ms)48 void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override {} SetMinBitrate(int min_bitrate_bps)49 void SetMinBitrate(int min_bitrate_bps) override {} 50 int64_t TimeUntilNextProcess() override; 51 int32_t Process() override; 52 53 static const int kDefaultProcessIntervalMs; 54 static const int kBackWindowMs; 55 56 private: 57 void OnPacketArrival(uint16_t sequence_number, int64_t arrival_time) 58 EXCLUSIVE_LOCKS_REQUIRED(&lock_); 59 bool BuildFeedbackPacket(rtcp::TransportFeedback* feedback_packetket); 60 61 Clock* const clock_; 62 PacketRouter* const packet_router_; 63 int64_t last_process_time_ms_; 64 65 rtc::CriticalSection lock_; 66 67 uint32_t media_ssrc_ GUARDED_BY(&lock_); 68 uint8_t feedback_sequence_ GUARDED_BY(&lock_); 69 SequenceNumberUnwrapper unwrapper_ GUARDED_BY(&lock_); 70 int64_t window_start_seq_ GUARDED_BY(&lock_); 71 // Map unwrapped seq -> time. 72 std::map<int64_t, int64_t> packet_arrival_times_ GUARDED_BY(&lock_); 73 }; 74 75 } // namespace webrtc 76 77 #endif // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_REMOTE_ESTIMATOR_PROXY_H_ 78