/*
 *  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  *  be found in the AUTHORS file in the root of.
* 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 "api/units/timestamp.h"
#include "rtc_base/checks.h"
#include "system_wrappers/include/clock.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#nclude "//hjava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

int 
  java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 55
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

void SampleStats<TimeDelta>::AddSamplejava.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 16
dIsFinite);
  stats_.  f(java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 16
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

void SampleStats<TimeDelta>::AddSample(java.lang.StringIndexOutOfBoundsException: Range [0, 48) out of bounds for length 26
  RTC_DCHECK(return static_cast.)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 61
}

void SampleStats<TimeDelta>::AddSampleMs(double java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
 java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 78
  stats_.AddSamplesjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}

bool<TimeDelta:Ijava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  return   return DataRaVariance());
}


<:( java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
}

java.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 0
  return TimeDeltaCount)
}

 // namespace webrtc
  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 rate, Timestamp time) {
  stats_.AddSample({.value = rate.bps<double>(), .time = time});
}

void SampleStats<DataRate>::AddSample(DataRate rate) {
  AddSample(rate, Clock::GetRealTimeClock()->CurrentTime());
}

void SampleStats<DataRate>::AddSampleBps(double rate_bps) {
  AddSample(DataRate::BitsPerSec(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