Index: webrtc/modules/rtp_rtcp/source/packet_loss_stats.h |
diff --git a/webrtc/modules/rtp_rtcp/source/packet_loss_stats.h b/webrtc/modules/rtp_rtcp/source/packet_loss_stats.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2eab043c0d01a4170f85aef0192ba4f7a6b0af41 |
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+++ b/webrtc/modules/rtp_rtcp/source/packet_loss_stats.h |
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+/* |
+ * Copyright (c) 2015 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 WEBRTC_MODULES_RTP_RTCP_SOURCE_PACKET_LOSS_STATS_H_ |
+#define WEBRTC_MODULES_RTP_RTCP_SOURCE_PACKET_LOSS_STATS_H_ |
+ |
+#include <stdint.h> |
+#include <set> |
+ |
+namespace webrtc { |
+ |
+// Keeps track of statistics of packet loss including whether losses are a |
+// single packet or multiple packets in a row. |
+class PacketLossStats { |
+ public: |
+ PacketLossStats(); |
+ ~PacketLossStats() {} |
+ |
+ // Adds a lost packet to the stats by sequence number. |
+ void AddLostPacket(uint16_t sequence_number); |
+ |
+ // Queries the number of packets that were lost by themselves, no neighboring |
+ // packets were lost. |
+ int GetSingleLossCount() const; |
+ |
+ // Queries the number of times that multiple packets with sequential numbers |
+ // were lost. This is the number of events with more than one packet lost, |
+ // regardless of the size of the event; |
+ int GetMultipleLossEventCount() const; |
+ |
+ // Queries the number of packets lost in multiple packet loss events. Combined |
+ // with the event count, this can be used to determine the average event size. |
+ int GetMultipleLossPacketCount() const; |
+ |
+ private: |
+ std::set<uint16_t> lost_packets_buffer_; |
+ std::set<uint16_t> lost_packets_wrapped_buffer_; |
+ int single_loss_historic_count_; |
+ int multiple_loss_historic_event_count_; |
+ int multiple_loss_historic_packet_count_; |
+ |
+ void ComputeLossCounts(int* out_single_loss_count, |
+ int* out_multiple_loss_event_count, |
+ int* out_multiple_loss_packet_count) const; |
+ void PruneBuffer(); |
+}; |
+ |
+} // namespace webrtc |
+ |
+#endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_PACKET_LOSS_STATS_H_ |