blob: 71e8b63ce8de86d058648b93354f0e531e13a3c0 [file] [log] [blame]
* Copyright 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.
#include <stddef.h>
#include "webrtc/base/constructormagic.h"
namespace webrtc {
// BlockMeanCalculator calculates the mean of a block of values. Values are
// added one after another, and the mean is updated at the end of every block.
class BlockMeanCalculator {
explicit BlockMeanCalculator(size_t block_length);
// Reset.
void Reset();
// Add one value to the sequence.
void AddValue(float value);
// Return whether the latest added value was at the end of a block.
bool EndOfBlock() const;
// Return the latest mean.
float GetLatestMean() const;
// Clear all values added.
void Clear();
const size_t block_length_;
size_t count_;
float sum_;
float mean_;
} // namespace webrtc