Move webrtc/{base => rtc_base}

webrtc/base/numerics/percentile_filter.h

 /*
  *  Copyright (c) 2016 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.
  */
 
 #ifndef WEBRTC_BASE_NUMERICS_PERCENTILE_FILTER_H_
 #define WEBRTC_BASE_NUMERICS_PERCENTILE_FILTER_H_
 
-#include <stdint.h>
 
-#include <iterator>
-#include <set>
-
-#include "webrtc/base/checks.h"
-
-namespace webrtc {
-
-// Class to efficiently get the percentile value from a group of observations.
-// The percentile is the value below which a given percentage of the
-// observations fall.
-template <typename T>
-class PercentileFilter {
- public:
-  // Construct filter. |percentile| should be between 0 and 1.
-  explicit PercentileFilter(float percentile);
-
-  // Insert one observation. The complexity of this operation is logarithmic in
-  // the size of the container.
-  void Insert(const T& value);
-
-  // Remove one observation or return false if |value| doesn't exist in the
-  // container. The complexity of this operation is logarithmic in the size of
-  // the container.
-  bool Erase(const T& value);
-
-  // Get the percentile value. The complexity of this operation is constant.
-  T GetPercentileValue() const;
-
- private:
-  // Update iterator and index to point at target percentile value.
-  void UpdatePercentileIterator();
-
-  const float percentile_;
-  std::multiset<T> set_;
-  // Maintain iterator and index of current target percentile value.
-  typename std::multiset<T>::iterator percentile_it_;
-  int64_t percentile_index_;
-};
-
-template <typename T>
-PercentileFilter<T>::PercentileFilter(float percentile)
-    : percentile_(percentile),
-      percentile_it_(set_.begin()),
-      percentile_index_(0) {
-  RTC_CHECK_GE(percentile, 0.0f);
-  RTC_CHECK_LE(percentile, 1.0f);
-}
-
-template <typename T>
-void PercentileFilter<T>::Insert(const T& value) {
-  // Insert element at the upper bound.
-  set_.insert(value);
-  if (set_.size() == 1u) {
-    // First element inserted - initialize percentile iterator and index.
-    percentile_it_ = set_.begin();
-    percentile_index_ = 0;
-  } else if (value < *percentile_it_) {
-    // If new element is before us, increment |percentile_index_|.
-    ++percentile_index_;
-  }
-  UpdatePercentileIterator();
-}
-
-template <typename T>
-bool PercentileFilter<T>::Erase(const T& value) {
-  typename std::multiset<T>::const_iterator it = set_.lower_bound(value);
-  // Ignore erase operation if the element is not present in the current set.
-  if (it == set_.end() || *it != value)
-    return false;
-  if (it == percentile_it_) {
-    // If same iterator, update to the following element. Index is not
-    // affected.
-    percentile_it_ = set_.erase(it);
-  } else {
-    set_.erase(it);
-    // If erased element was before us, decrement |percentile_index_|.
-    if (value <= *percentile_it_)
-      --percentile_index_;
-  }
-  UpdatePercentileIterator();
-  return true;
-}
-
-template <typename T>
-void PercentileFilter<T>::UpdatePercentileIterator() {
-  if (set_.empty())
-    return;
-  const int64_t index = static_cast<int64_t>(percentile_ * (set_.size() - 1));
-  std::advance(percentile_it_, index - percentile_index_);
-  percentile_index_ = index;
-}
-
-template <typename T>
-T PercentileFilter<T>::GetPercentileValue() const {
-  return set_.empty() ? 0 : *percentile_it_;
-}
-
-}  // namespace webrtc
+// This header is deprecated and is just left here temporarily during
+// refactoring. See https://bugs.webrtc.org/7634 for more details.
+#include "webrtc/rtc_base/numerics/percentile_filter.h"
 
 #endif  // WEBRTC_BASE_NUMERICS_PERCENTILE_FILTER_H_