packet_loss_stats.h (1983B)
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 MODULES_RTP_RTCP_SOURCE_PACKET_LOSS_STATS_H_ 12 #define MODULES_RTP_RTCP_SOURCE_PACKET_LOSS_STATS_H_ 13 14 #include <stdint.h> 15 16 #include <set> 17 18 namespace webrtc { 19 20 // Keeps track of statistics of packet loss including whether losses are a 21 // single packet or multiple packets in a row. 22 class PacketLossStats { 23 public: 24 PacketLossStats(); 25 ~PacketLossStats(); 26 27 // Adds a lost packet to the stats by sequence number. 28 void AddLostPacket(uint16_t sequence_number); 29 30 // Queries the number of packets that were lost by themselves, no neighboring 31 // packets were lost. 32 int GetSingleLossCount() const; 33 34 // Queries the number of times that multiple packets with sequential numbers 35 // were lost. This is the number of events with more than one packet lost, 36 // regardless of the size of the event; 37 int GetMultipleLossEventCount() const; 38 39 // Queries the number of packets lost in multiple packet loss events. Combined 40 // with the event count, this can be used to determine the average event size. 41 int GetMultipleLossPacketCount() const; 42 43 private: 44 std::set<uint16_t> lost_packets_buffer_; 45 std::set<uint16_t> lost_packets_wrapped_buffer_; 46 int single_loss_historic_count_; 47 int multiple_loss_historic_event_count_; 48 int multiple_loss_historic_packet_count_; 49 50 void ComputeLossCounts(int* out_single_loss_count, 51 int* out_multiple_loss_event_count, 52 int* out_multiple_loss_packet_count) const; 53 void PruneBuffer(); 54 }; 55 56 } // namespace webrtc 57 58 #endif // MODULES_RTP_RTCP_SOURCE_PACKET_LOSS_STATS_H_