text: /*
   *  Copyright (c) 2014 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 VIDEO_REPORT_BLOCK_STATS_H_
  #define VIDEO_REPORT_BLOCK_STATS_H_
  
  #include <map>
  #include <vector>
  
  #include BOSS_WEBRTC_U_common_types_h //original-code:"common_types.h"  // NOLINT(build/include)
  #include BOSS_WEBRTC_U_modules__rtp_rtcp__include__rtp_rtcp_defines_h //original-code:"modules/rtp_rtcp/include/rtp_rtcp_defines.h"
  
  namespace webrtc {
  
  // Helper class for rtcp statistics.
  class ReportBlockStats {
   public:
    typedef std::map<uint32_t, RTCPReportBlock> ReportBlockMap;
    typedef std::vector<RTCPReportBlock> ReportBlockVector;
    ReportBlockStats();
    ~ReportBlockStats();
  
    // Updates stats and stores report blocks.
    // Returns an aggregate of the |report_blocks|.
    RTCPReportBlock AggregateAndStore(const ReportBlockVector& report_blocks);
  
    // Updates stats and stores report block.
    void Store(const RtcpStatistics& rtcp_stats,
               uint32_t remote_ssrc,
               uint32_t source_ssrc);
  
    // Returns the total fraction of lost packets (or -1 if less than two report
    // blocks have been stored).
    int FractionLostInPercent() const;
  
   private:
    // Updates the total number of packets/lost packets.
    // Stores the report block.
    // Returns the number of packets/lost packets since previous report block.
    void StoreAndAddPacketIncrement(const RTCPReportBlock& report_block,
                                    uint32_t* num_sequence_numbers,
                                    uint32_t* num_lost_sequence_numbers);
  
    // The total number of packets/lost packets.
    uint32_t num_sequence_numbers_;
    uint32_t num_lost_sequence_numbers_;
  
    // Map holding the last stored report block (mapped by the source SSRC).
    ReportBlockMap prev_report_blocks_;
  };
  
  }  // namespace webrtc
  
  #endif  // VIDEO_REPORT_BLOCK_STATS_H_
  