Merge pull request #1571 from GrigoryanArtem/master

Added logging facilities

src/OpenCvSharp/Cv2/Cv2_core.cs

@@ -3590,6 +3590,35 @@ public static string Format(InputArray mtx, FormatType format = FormatType.Defau
 
     #endregion
 
+    #region logger.hpp
+
+    /// <summary>
+    /// Set global logging level
+    /// </summary>
+    /// <param name="logLevel">logging level</param>
+    /// <returns>previous logging level</returns>
+    public static LogLevel SetLogLevel(LogLevel logLevel)
+    {
+        NativeMethods.HandleException(
+            NativeMethods.core_logger_setLogLevel(logLevel, out var previous));
+
+        return previous;
+    }
+
+    /// <summary>
+    /// Get global logging level
+    /// </summary>
+    /// <returns>logging level</returns>
+    public static LogLevel GetLogLevel()
+    {
+        NativeMethods.HandleException(
+            NativeMethods.core_logger_getLogLevel(out var logLevel));
+
+        return logLevel;
+    }
+
+    #endregion
+
     /// <summary>
     /// Computes absolute value of each matrix element
     /// </summary>

src/OpenCvSharp/Internal/PInvoke/NativeMethods/core/NativeMethods_core.cs

@@ -80,6 +80,16 @@ static partial class NativeMethods
 
     #endregion
 
+    #region logger.hpp
+
+    [Pure, DllImport(DllExtern, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
+    public static extern ExceptionStatus core_logger_setLogLevel(LogLevel logLevel, out LogLevel returnValue);
+
+    [Pure, DllImport(DllExtern, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
+    public static extern ExceptionStatus core_logger_getLogLevel(out LogLevel returnValue);
+
+    #endregion
+
     [Pure, DllImport(DllExtern, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
     public static extern ExceptionStatus core_borderInterpolate(
         int p, int len, int borderType, out int returnValue);

src/OpenCvSharp/Modules/core/Enum/LogLevel.cs

@@ -0,0 +1,42 @@
+namespace OpenCvSharp;
+
+/// <summary>
+/// cv::utils::logging::LogLevel
+/// </summary>
+public enum LogLevel
+{
+    /// <summary>
+    /// for using in setLogVevel() call
+    /// </summary>
+    SILENT = 0,
+
+    /// <summary>
+    /// Fatal (critical) error (unrecoverable internal error)
+    /// </summary>
+    FATAL = 1,
+
+    /// <summary>
+    /// Error message.
+    /// </summary>
+    ERROR = 2,
+
+    /// <summary>
+    /// Warning message.
+    /// </summary>
+    WARNING = 3,
+
+    /// <summary>
+    /// Info message.
+    /// </summary>
+    INFO = 4,
+
+    /// <summary>
+    /// Debug message. Disabled in the "Release" build.
+    /// </summary>
+    DEBUG = 5,
+
+    /// <summary>
+    /// Verbose (trace) messages. Requires verbosity level. Disabled in the "Release" build.
+    /// </summary>
+    VERBOSE = 6
+}

src/OpenCvSharpExtern/core.h

@@ -1058,6 +1058,24 @@ CVAPI(ExceptionStatus) core_format(cv::_InputArray *mtx, int fmt, std::string *b
 
 #pragma endregion
 
+#pragma region logger.hpp
+
+CVAPI(ExceptionStatus) core_logger_setLogLevel(cv::utils::logging::LogLevel logLevel, cv::utils::logging::LogLevel* returnValue)
+{
+    BEGIN_WRAP
+    *returnValue = cv::utils::logging::setLogLevel(logLevel);
+    END_WRAP
+}
+
+CVAPI(ExceptionStatus) core_logger_getLogLevel(cv::utils::logging::LogLevel *returnValue)
+{
+    BEGIN_WRAP
+    *returnValue = cv::utils::logging::getLogLevel();
+    END_WRAP
+}
+
+#pragma endregion
+
 #pragma region RNG
 
 CVAPI(ExceptionStatus) core_RNG_fill(uint64 *state, cv::_InputOutputArray *mat, int distType, cv::_InputArray *a, cv::_InputArray *b, int saturateRange)

src/OpenCvSharpExtern/include_opencv.h

@@ -38,6 +38,7 @@
 #ifdef _WINRT_DLL
 #include <opencv2/highgui/highgui_winrt.hpp>
 #endif
+#include <opencv2/core/utils/logger.hpp>
 #include <opencv2/highgui/highgui_c.h>
 #include <opencv2/imgproc/imgproc_c.h>
 #include <opencv2/shape.hpp>