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