Pace outgoing frames in frame scheduler to match target bitrate.

remoting/test/leaky_bucket.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "remoting/test/leaky_bucket.h"
-
-#include "base/logging.h"
-
-namespace remoting {
-
-LeakyBucket::LeakyBucket(double depth, double rate)
-    : depth_(depth),
-      rate_(rate),
-      level_(0.0),
-      last_update_(base::TimeTicks::Now()) {
-}
-
-LeakyBucket::~LeakyBucket() {
-}
-
-base::TimeDelta LeakyBucket::AddPacket(int size) {
-  UpdateLevel();
-
-  double new_level = level_ + size;
-  if (new_level > depth_)
-    return base::TimeDelta::Max();
-
-  base::TimeDelta result = base::TimeDelta::FromSecondsD(level_ / rate_);
-  level_ = new_level;
-  return result;
-}
-
-void LeakyBucket::UpdateLevel() {
-  base::TimeTicks now = base::TimeTicks::Now();
-  level_ -= rate_ * (now - last_update_).InSecondsF();
-  if (level_ < 0.0)
-    level_ = 0.0;
-  last_update_ = now;
-}
-
-}  // namespace remoting