555604a746
This propagated into various other places. Also had to #include headers that were implicitly pulled by "scoped_ptr.h". BUG=webrtc:5520 Review URL: https://codereview.webrtc.org/1920043002 Cr-Commit-Position: refs/heads/master@{#12501}
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
/*
|
|
* 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/typedefs.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class RateStatistics {
|
|
public:
|
|
// window_size = window size in ms for the rate estimation
|
|
// scale = coefficient to convert counts/ms to desired units,
|
|
// ex: if counts represents bytes, use 8*1000 to go to bits/s
|
|
RateStatistics(uint32_t window_size_ms, float scale);
|
|
~RateStatistics();
|
|
|
|
void Reset();
|
|
void Update(size_t count, int64_t now_ms);
|
|
uint32_t Rate(int64_t now_ms);
|
|
|
|
private:
|
|
void EraseOld(int64_t now_ms);
|
|
|
|
// Counters are kept in buckets (circular buffer), with one bucket
|
|
// per millisecond.
|
|
const int num_buckets_;
|
|
std::unique_ptr<size_t[]> buckets_;
|
|
|
|
// Total count recorded in buckets.
|
|
size_t accumulated_count_;
|
|
|
|
// Oldest time recorded in buckets.
|
|
int64_t oldest_time_;
|
|
|
|
// Bucket index of oldest counter recorded in buckets.
|
|
int oldest_index_;
|
|
|
|
// To convert counts/ms to desired units
|
|
const float scale_;
|
|
};
|
|
} // namespace webrtc
|
|
|
|
#endif // WEBRTC_BASE_RATE_STATISTICS_H_
|