media/cast/rtp_receiver/receiver_stats.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_CAST_RTP_RECEIVER_RECEIVER_STATS_H_
   6 #define MEDIA_CAST_RTP_RECEIVER_RECEIVER_STATS_H_
   7
   8 #include "base/time/tick_clock.h"
   9 #include "base/time/time.h"
  10 #include "media/cast/rtp_receiver/rtp_receiver_defines.h"
  11
  12 namespace media {
  13 namespace cast {
  14
  15 class ReceiverStats {
  16  public:
  17   explicit ReceiverStats(base::TickClock* clock);
  18   ~ReceiverStats();
  19
  20   void GetStatistics(uint8* fraction_lost,
  21                      uint32* cumulative_lost,  // 24 bits valid.
  22                      uint32* extended_high_sequence_number,
  23                      uint32* jitter);
  24   void UpdateStatistics(const RtpCastHeader& header);
  25
  26  private:
  27   base::TickClock* const clock_;  // Not owned by this class.
  28
  29   // Global metrics.
  30   uint16 min_sequence_number_;
  31   uint16 max_sequence_number_;
  32   uint32 total_number_packets_;
  33   uint16 sequence_number_cycles_;
  34   base::TimeDelta last_received_timestamp_;
  35   base::TimeTicks last_received_packet_time_;
  36   base::TimeDelta jitter_;
  37
  38   // Intermediate metrics - between RTCP reports.
  39   int interval_min_sequence_number_;
  40   int interval_number_packets_;
  41   int interval_wrap_count_;
  42 };
  43
  44 }  // namespace cast
  45 }  // namespace media
  46
  47 #endif  // MEDIA_CAST_RTP_RECEIVER_RECEIVER_STATS_H_