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// Copyright (C) 2020 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
//
/**
* @brief a header file for performance metrics calculation class
* @file performance_metrics.hpp
*/
#pragma once
#include <chrono>
#include <iomanip>
#include <iostream>
#include <sstream>
#include "utils/ocv_common.hpp"
class PerformanceMetrics {
public:
using Clock = std::chrono::steady_clock;
using TimePoint = std::chrono::time_point<Clock>;
using Duration = Clock::duration;
using Ms = std::chrono::duration<double, std::ratio<1, 1000>>;
using Sec = std::chrono::duration<double, std::ratio<1, 1>>;
struct Metrics {
double latency;
double fps;
};
enum MetricTypes {
ALL,
FPS,
LATENCY
};
PerformanceMetrics(Duration timeWindow = std::chrono::seconds(1));
void update(TimePoint lastRequestStartTime,
const cv::Mat& frame,
cv::Point position = {15, 30},
int fontFace = cv::FONT_HERSHEY_COMPLEX,
double fontScale = 0.75,
cv::Scalar color = {200, 10, 10},
int thickness = 2, MetricTypes metricType = ALL);
void update(TimePoint lastRequestStartTime);
/// Paints metrics over provided mat
/// @param frame frame to paint over
/// @param position left top corner of text block
/// @param fontScale font scale
/// @param color font color
/// @param thickness font thickness
void paintMetrics(const cv::Mat& frame,
cv::Point position = { 15, 30 },
int fontFace = cv::FONT_HERSHEY_COMPLEX,
double fontScale = 0.75,
cv::Scalar color = { 200, 10, 10 },
int thickness = 2, MetricTypes metricType = ALL) const;
Metrics getLast() const;
Metrics getTotal() const;
void logTotal() const;
private:
struct Statistic {
Duration latency;
Duration period;
int frameCount;
Statistic() {
latency = Duration::zero();
period = Duration::zero();
frameCount = 0;
}
void combine(const Statistic& other) {
latency += other.latency;
period += other.period;
frameCount += other.frameCount;
}
};
Duration timeWindowSize;
Statistic lastMovingStatistic;
Statistic currentMovingStatistic;
Statistic totalStatistic;
TimePoint lastUpdateTime;
bool firstFrameProcessed;
};
void logLatencyPerStage(double readLat, double preprocLat, double inferLat, double postprocLat, double renderLat);
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