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/*
* Copyright (c) 2019 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 "rtc_base/numerics/sample_stats.h"
#include <cmath>
#include "api/units/data_rate.h"
#include "api/units/time_delta.h"
#include "rtc_base/checks.h"
namespace webrtc {
double SampleStats<double>::Max() {
if (IsEmpty())
return INFINITY;
return GetMax();
}
double SampleStats<double>::Mean() {
if (IsEmpty())
return 0;
return GetAverage();
}
double SampleStats<double>::Median() {
return Quantile(0.5);
}
double SampleStats<double>::Quantile(double quantile) {
if (IsEmpty())
return 0;
return GetPercentile(quantile);
}
double SampleStats<double>::Min() {
if (IsEmpty())
return -INFINITY;
return GetMin();
}
double SampleStats<double>::Variance() {
if (IsEmpty())
return 0;
return GetVariance();
}
double SampleStats<double>::StandardDeviation() {
return sqrt(Variance());
}
int SampleStats<double>::Count() {
return static_cast<int>(GetSamples().size());
}
void SampleStats<TimeDelta>::AddSample(TimeDelta delta) {
RTC_DCHECK(delta.IsFinite());
stats_.AddSample(delta.seconds<double>());
}
void SampleStats<TimeDelta>::AddSampleMs(double delta_ms) {
AddSample(TimeDelta::Millis(delta_ms));
}
void SampleStats<TimeDelta>::AddSamples(const SampleStats<TimeDelta>& other) {
stats_.AddSamples(other.stats_);
}
bool SampleStats<TimeDelta>::IsEmpty() {
return stats_.IsEmpty();
}
TimeDelta SampleStats<TimeDelta>::Max() {
return TimeDelta::Seconds(stats_.Max());
}
TimeDelta SampleStats<TimeDelta>::Mean() {
return TimeDelta::Seconds(stats_.Mean());
}
TimeDelta SampleStats<TimeDelta>::Median() {
return Quantile(0.5);
}
TimeDelta SampleStats<TimeDelta>::Quantile(double quantile) {
return TimeDelta::Seconds(stats_.Quantile(quantile));
}
TimeDelta SampleStats<TimeDelta>::Min() {
return TimeDelta::Seconds(stats_.Min());
}
TimeDelta SampleStats<TimeDelta>::Variance() {
return TimeDelta::Seconds(stats_.Variance());
}
TimeDelta SampleStats<TimeDelta>::StandardDeviation() {
return TimeDelta::Seconds(stats_.StandardDeviation());
}
int SampleStats<TimeDelta>::Count() {
return stats_.Count();
}
void SampleStats<DataRate>::AddSample(DataRate sample) {
stats_.AddSample(sample.bps<double>());
}
void SampleStats<DataRate>::AddSampleBps(double rate_bps) {
stats_.AddSample(rate_bps);
}
void SampleStats<DataRate>::AddSamples(const SampleStats<DataRate>& other) {
stats_.AddSamples(other.stats_);
}
bool SampleStats<DataRate>::IsEmpty() {
return stats_.IsEmpty();
}
DataRate SampleStats<DataRate>::Max() {
return DataRate::BitsPerSec(stats_.Max());
}
DataRate SampleStats<DataRate>::Mean() {
return DataRate::BitsPerSec(stats_.Mean());
}
DataRate SampleStats<DataRate>::Median() {
return Quantile(0.5);
}
DataRate SampleStats<DataRate>::Quantile(double quantile) {
return DataRate::BitsPerSec(stats_.Quantile(quantile));
}
DataRate SampleStats<DataRate>::Min() {
return DataRate::BitsPerSec(stats_.Min());
}
DataRate SampleStats<DataRate>::Variance() {
return DataRate::BitsPerSec(stats_.Variance());
}
DataRate SampleStats<DataRate>::StandardDeviation() {
return DataRate::BitsPerSec(stats_.StandardDeviation());
}
int SampleStats<DataRate>::Count() {
return stats_.Count();
}
} // namespace webrtc
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