Move webrtc/{base => rtc_base}

webrtc/base/rate_statistics.h

 /*
  *  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.
  */
 
 #ifndef WEBRTC_BASE_RATE_STATISTICS_H_
 #define WEBRTC_BASE_RATE_STATISTICS_H_
 
-#include <memory>
 
-#include "webrtc/base/optional.h"
-#include "webrtc/typedefs.h"
-
-namespace webrtc {
-
-class RateStatistics {
- public:
-  static constexpr float kBpsScale = 8000.0f;
-
-  // max_window_size_ms = Maximum window size in ms for the rate estimation.
-  //                      Initial window size is set to this, but may be changed
-  //                      to something lower by calling SetWindowSize().
-  // scale = coefficient to convert counts/ms to desired unit
-  //         ex: kBpsScale (8000) for bits/s if count represents bytes.
-  RateStatistics(int64_t max_window_size_ms, float scale);
-  ~RateStatistics();
-
-  // Reset instance to original state.
-  void Reset();
-
-  // Update rate with a new data point, moving averaging window as needed.
-  void Update(size_t count, int64_t now_ms);
-
-  // Note that despite this being a const method, it still updates the internal
-  // state (moves averaging window), but it doesn't make any alterations that
-  // are observable from the other methods, as long as supplied timestamps are
-  // from a monotonic clock. Ie, it doesn't matter if this call moves the
-  // window, since any subsequent call to Update or Rate would still have moved
-  // the window as much or more.
-  rtc::Optional<uint32_t> Rate(int64_t now_ms) const;
-
-  // Update the size of the averaging window. The maximum allowed value for
-  // window_size_ms is max_window_size_ms as supplied in the constructor.
-  bool SetWindowSize(int64_t window_size_ms, int64_t now_ms);
-
- private:
-  void EraseOld(int64_t now_ms);
-  bool IsInitialized() const;
-
-  // Counters are kept in buckets (circular buffer), with one bucket
-  // per millisecond.
-  struct Bucket {
-    size_t sum;      // Sum of all samples in this bucket.
-    size_t samples;  // Number of samples in this bucket.
-  };
-  std::unique_ptr<Bucket[]> buckets_;
-
-  // Total count recorded in buckets.
-  size_t accumulated_count_;
-
-  // The total number of samples in the buckets.
-  size_t num_samples_;
-
-  // Oldest time recorded in buckets.
-  int64_t oldest_time_;
-
-  // Bucket index of oldest counter recorded in buckets.
-  uint32_t oldest_index_;
-
-  // To convert counts/ms to desired units
-  const float scale_;
-
-  // The window sizes, in ms, over which the rate is calculated.
-  const int64_t max_window_size_ms_;
-  int64_t current_window_size_ms_;
-};
-}  // 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/rate_statistics.h"
 
 #endif  // WEBRTC_BASE_RATE_STATISTICS_H_