Tune BWE to be more sensitive on low capacity networks.

webrtc/modules/remote_bitrate_estimator/overuse_detector.cc

 /*
  *  Copyright (c) 2012 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.
  */
 
 #include "webrtc/modules/remote_bitrate_estimator/overuse_detector.h"
 
 #include <math.h>
 #include <stdlib.h>
 
 #include <algorithm>
 #include <sstream>
 #include <string>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/common.h"
+#include "webrtc/base/logging.h"
 #include "webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h"
 #include "webrtc/modules/remote_bitrate_estimator/test/bwe_test_logging.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_utility.h"
 #include "webrtc/system_wrappers/include/field_trial.h"
 #include "webrtc/system_wrappers/include/trace.h"
 
 namespace webrtc {
 
 const char kAdaptiveThresholdExperiment[] = "WebRTC-AdaptiveBweThreshold";
 const char kEnabledPrefix[] = "Enabled";
@@ skipping 20 matching lines @@
       webrtc::field_trial::FindFullName(kAdaptiveThresholdExperiment);
   const size_t kMinExperimentLength = kEnabledPrefixLength + 3;
   if (experiment_string.length() < kMinExperimentLength ||
       experiment_string.substr(0, kEnabledPrefixLength) != kEnabledPrefix)
     return false;
   return sscanf(experiment_string.substr(kEnabledPrefixLength + 1).c_str(),
                 "%lf,%lf", k_up, k_down) == 2;
 }
 
 OveruseDetector::OveruseDetector(const OverUseDetectorOptions& options)
-      // Experiment is on by default, but can be disabled with finch by setting
-      // the field trial string to "WebRTC-AdaptiveBweThreshold/Disabled/".
+    // Experiment is on by default, but can be disabled with finch by setting
+    // the field trial string to "WebRTC-AdaptiveBweThreshold/Disabled/".
     : in_experiment_(!AdaptiveThresholdExperimentIsDisabled()),
-      k_up_(0.004),
-      k_down_(0.00006),
+      k_up_(0.0087),
+      k_down_(0.039),
       overusing_time_threshold_(100),
       options_(options),
       threshold_(12.5),
       last_update_ms_(-1),
       prev_offset_(0.0),
       time_over_using_(-1),
       overuse_counter_(0),
       hypothesis_(kBwNormal) {
   if (!AdaptiveThresholdExperimentIsDisabled())
     InitializeExperiment();
@@ skipping 81 matching lines @@
   RTC_DCHECK(in_experiment_);
   double k_up = 0.0;
   double k_down = 0.0;
   overusing_time_threshold_ = kOverUsingTimeThreshold;
   if (ReadExperimentConstants(&k_up, &k_down)) {
     k_up_ = k_up;
     k_down_ = k_down;
   }
 }
 }  // namespace webrtc