Make the BWE threshold adaptive.

webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.cc

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 76 matching lines @@
  private:
   typedef std::pair<int64_t, uint32_t> TimeSizePair;
 
   const int64_t kWindowSizeUs;
   uint32_t packets_per_second_;
   uint32_t bytes_per_second_;
   int64_t last_accumulated_us_;
   std::list<TimeSizePair> window_;
 };
 
-Random::Random(uint32_t seed)
-    : a_(0x531FDB97 ^ seed),
-      b_(0x6420ECA8 + seed) {
-}
-
-float Random::Rand() {
-  const float kScale = 1.0f / 0xffffffff;
-  float result = kScale * b_;
-  a_ ^= b_;
-  b_ += a_;
-  return result;
-}
-
-int Random::Gaussian(int mean, int standard_deviation) {
-  // Creating a Normal distribution variable from two independent uniform
-  // variables based on the Box-Muller transform, which is defined on the
-  // interval (0, 1], hence the mask+add below.
-  const double kPi = 3.14159265358979323846;
-  const double kScale = 1.0 / 0x80000000ul;
-  double u1 = kScale * ((a_ & 0x7ffffffful) + 1);
-  double u2 = kScale * ((b_ & 0x7ffffffful) + 1);
-  a_ ^= b_;
-  b_ += a_;
-  return static_cast<int>(mean + standard_deviation *
-      sqrt(-2 * log(u1)) * cos(2 * kPi * u2));
-}
-
 Packet::Packet()
     : flow_id_(0), creation_time_us_(-1), send_time_us_(-1), payload_size_(0) {
 }
 
 Packet::Packet(int flow_id, int64_t send_time_us, size_t payload_size)
     : flow_id_(flow_id),
       creation_time_us_(send_time_us),
       send_time_us_(send_time_us),
       payload_size_(payload_size) {
 }
@@ skipping 607 matching lines @@
 uint32_t PeriodicKeyFrameSource::NextPacketSize(uint32_t frame_size,
                                                 uint32_t remaining_payload) {
   uint32_t fragments =
       (frame_size + (kMaxPayloadSizeBytes - 1)) / kMaxPayloadSizeBytes;
   uint32_t avg_size = (frame_size + fragments - 1) / fragments;
   return std::min(avg_size, remaining_payload);
 }
 }  // namespace bwe
 }  // namespace testing
 }  // namespace webrtc