USB_UVC_DETECT/ImageTest/ImageTest.h

#ifndef IMAGE_TEST_H
#define IMAGE_TEST_H

#include <opencv4/opencv2/opencv.hpp>
#include <string>
#include <sys/time.h>
#include <chrono>

namespace ImageTest
{

    void saveImageFromData(unsigned char *data, int width, int height, const std::string &filename = "./output.png")
    {
        cv::Mat image(height, width, CV_8UC3, data);
        cv::imwrite(filename, image);
    }

    class HighResolutionTimer
    {
    public:
        // 开始计时
        void start()
        {
            start_time = std::chrono::high_resolution_clock::now();
        }

        // 停止计时
        void stop()
        {
            end_time = std::chrono::high_resolution_clock::now();
        }

        // 获取经过的时间（以秒为单位）
        double elapsed() const
        {
            return std::chrono::duration<double>(end_time - start_time).count();
        }

        // 获取经过的时间（以毫秒为单位）
        double elapsed_milliseconds() const
        {
            return std::chrono::duration<double, std::milli>(end_time - start_time).count();
        }

        // 获取经过的时间（以微秒为单位）
        double elapsed_microseconds() const
        {
            return std::chrono::duration<double, std::micro>(end_time - start_time).count();
        }

    private:
        std::chrono::high_resolution_clock::time_point start_time;
        std::chrono::high_resolution_clock::time_point end_time;
    };

}
#endif // IMAGE_TEST_H