blob: 37919f028a0066f7f34fc07f1a0171c99994546d [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 "webrtc/modules/audio_processing/utility/block_mean_calculator.h"
#include "webrtc/rtc_base/checks.h"
namespace webrtc {
BlockMeanCalculator::BlockMeanCalculator(size_t block_length)
: block_length_(block_length),
count_(0),
sum_(0.0),
mean_(0.0) {
RTC_DCHECK(block_length_ != 0);
}
void BlockMeanCalculator::Reset() {
Clear();
mean_ = 0.0;
}
void BlockMeanCalculator::AddValue(float value) {
sum_ += value;
++count_;
if (count_ == block_length_) {
mean_ = sum_ / block_length_;
Clear();
}
}
bool BlockMeanCalculator::EndOfBlock() const {
return count_ == 0;
}
float BlockMeanCalculator::GetLatestMean() const {
return mean_;
}
// Flush all samples added.
void BlockMeanCalculator::Clear() {
count_ = 0;
sum_ = 0.0;
}
} // namespace webrtc