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82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
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#ifndef OPENCV_GAPI_PIPELINE_MODELING_TOOL_UTILS_HPP
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#define OPENCV_GAPI_PIPELINE_MODELING_TOOL_UTILS_HPP
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#include <opencv2/core.hpp>
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#if defined(_WIN32)
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#include <windows.h>
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#endif
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// FIXME: It's better to place it somewhere in common.hpp
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struct OutputDescr {
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std::vector<int> dims;
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int precision;
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};
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namespace utils {
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inline void generateRandom(cv::Mat& out) {
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switch (out.depth()) {
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case CV_8U:
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cv::randu(out, 0, 255);
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break;
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case CV_32F:
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cv::randu(out, 0.f, 1.f);
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break;
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case CV_16F: {
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cv::Mat fp32_mat(out.size(), CV_MAKETYPE(CV_32F, out.channels()));
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cv::randu(fp32_mat, 0.f, 1.f);
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fp32_mat.convertTo(out, out.type());
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break;
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}
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default:
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throw std::logic_error("Unsupported preprocessing depth");
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}
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}
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inline void sleep(double ms) {
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#if defined(_WIN32)
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// NB: It takes portions of 100 nanoseconds.
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int64_t ns_units = static_cast<int64_t>(ms * 1e4);
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// FIXME: Wrap it to RAII and instance only once.
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HANDLE timer = CreateWaitableTimer(NULL, true, NULL);
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if (!timer) {
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throw std::logic_error("Failed to create timer");
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}
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LARGE_INTEGER li;
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li.QuadPart = -ns_units;
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if(!SetWaitableTimer(timer, &li, 0, NULL, NULL, false)){
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CloseHandle(timer);
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throw std::logic_error("Failed to set timer");
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}
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if (WaitForSingleObject(timer, INFINITE) != WAIT_OBJECT_0) {
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CloseHandle(timer);
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throw std::logic_error("Failed to wait timer");
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}
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CloseHandle(timer);
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#else
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using namespace std::chrono;
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std::this_thread::sleep_for(duration<double, std::milli>(ms));
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#endif
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}
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template <typename duration_t>
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typename duration_t::rep measure(std::function<void()> f) {
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using namespace std::chrono;
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auto start = high_resolution_clock::now();
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f();
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return duration_cast<duration_t>(
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high_resolution_clock::now() - start).count();
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}
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template <typename duration_t>
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typename duration_t::rep timestamp() {
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using namespace std::chrono;
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auto now = high_resolution_clock::now();
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return duration_cast<duration_t>(now.time_since_epoch()).count();
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}
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} // namespace utils
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#endif // OPENCV_GAPI_PIPELINE_MODELING_TOOL_UTILS_HPP
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