Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2016 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_CONGESTION_CONTROLLER_PROBE_BITRATE_ESTIMATOR_H_
      12             : #define WEBRTC_MODULES_CONGESTION_CONTROLLER_PROBE_BITRATE_ESTIMATOR_H_
      13             : 
      14             : #include <map>
      15             : #include <limits>
      16             : 
      17             : #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
      18             : 
      19             : namespace webrtc {
      20             : 
      21           0 : class ProbeBitrateEstimator {
      22             :  public:
      23             :   ProbeBitrateEstimator();
      24             : 
      25             :   // Should be called for every probe packet we receive feedback about.
      26             :   // Returns the estimated bitrate if the probe completes a valid cluster.
      27             :   int HandleProbeAndEstimateBitrate(const PacketInfo& packet_info);
      28             : 
      29             :  private:
      30           0 :   struct AggregatedCluster {
      31             :     int num_probes = 0;
      32           0 :     int64_t first_send_ms = std::numeric_limits<int64_t>::max();
      33             :     int64_t last_send_ms = 0;
      34           0 :     int64_t first_receive_ms = std::numeric_limits<int64_t>::max();
      35             :     int64_t last_receive_ms = 0;
      36             :     int size_last_send = 0;
      37             :     int size_first_receive = 0;
      38             :     int size_total = 0;
      39             :   };
      40             : 
      41             :   // Erases old cluster data that was seen before |timestamp_ms|.
      42             :   void EraseOldClusters(int64_t timestamp_ms);
      43             : 
      44             :   std::map<int, AggregatedCluster> clusters_;
      45             : };
      46             : 
      47             : }  // namespace webrtc
      48             : 
      49             : #endif  // WEBRTC_MODULES_CONGESTION_CONTROLLER_PROBE_BITRATE_ESTIMATOR_H_