tor-browser

The Tor Browser
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rtcp_statistics.h (2426B)

      1 /*
      2 *  Copyright (c) 2018 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_INCLUDE_RTCP_STATISTICS_H_
     12 #define MODULES_RTP_RTCP_INCLUDE_RTCP_STATISTICS_H_
     13 
     14 #include <stdint.h>
     15 
     16 #include "absl/strings/string_view.h"
     17 
     18 namespace webrtc {
     19 
     20 // Statistics for RTCP packet types.
     21 struct RtcpPacketTypeCounter {
     22  RtcpPacketTypeCounter()
     23      : nack_packets(0),
     24        fir_packets(0),
     25        pli_packets(0),
     26        nack_requests(0),
     27        unique_nack_requests(0) {}
     28 
     29  void Add(const RtcpPacketTypeCounter& other) {
     30    nack_packets += other.nack_packets;
     31    fir_packets += other.fir_packets;
     32    pli_packets += other.pli_packets;
     33    nack_requests += other.nack_requests;
     34    unique_nack_requests += other.unique_nack_requests;
     35  }
     36 
     37  void Subtract(const RtcpPacketTypeCounter& other) {
     38    nack_packets -= other.nack_packets;
     39    fir_packets -= other.fir_packets;
     40    pli_packets -= other.pli_packets;
     41    nack_requests -= other.nack_requests;
     42    unique_nack_requests -= other.unique_nack_requests;
     43  }
     44 
     45  int UniqueNackRequestsInPercent() const {
     46    if (nack_requests == 0) {
     47      return 0;
     48    }
     49    return static_cast<int>((unique_nack_requests * 100.0f / nack_requests) +
     50                            0.5f);
     51  }
     52 
     53  uint32_t nack_packets;          // Number of RTCP NACK packets.
     54  uint32_t fir_packets;           // Number of RTCP FIR packets.
     55  uint32_t pli_packets;           // Number of RTCP PLI packets.
     56  uint32_t nack_requests;         // Number of NACKed RTP packets.
     57  uint32_t unique_nack_requests;  // Number of unique NACKed RTP packets.
     58 };
     59 
     60 class RtcpPacketTypeCounterObserver {
     61 public:
     62  virtual ~RtcpPacketTypeCounterObserver() {}
     63  virtual void RtcpPacketTypesCounterUpdated(
     64      uint32_t ssrc,
     65      const RtcpPacketTypeCounter& packet_counter) = 0;
     66 };
     67 
     68 // Invoked for each cname passed in RTCP SDES blocks.
     69 class RtcpCnameCallback {
     70 public:
     71  virtual ~RtcpCnameCallback() = default;
     72 
     73  virtual void OnCname(uint32_t ssrc, absl::string_view cname) = 0;
     74 };
     75 
     76 }  // namespace webrtc
     77 #endif  // MODULES_RTP_RTCP_INCLUDE_RTCP_STATISTICS_H_