Attempting to JIT compile method "(wrapper native-to-managed) int Emgu.CV.CvInvoke:CvErrorHandler (int,intptr,intptr,intptr,int,intptr)" while running in aot-only mode.

[hirendh]

We have created cross platform application in .Net MAUI with .Net 8 Latest Version. In app we have used Emgu.CV.runtime.maui.macos.4.8.1.5350.nupkg nuget package. when we use any operation related CvInvoke it's throw exception. Following is code in i got this exception.

Convert SKbitmap to Mat :

Mat source = new Mat();
 byte[] bytes;
 using (SKImage img = SKImage.FromBitmap(skBitmap))
 using (SKData data = img.Encode())
 {
             bytes = data.ToArray();
 }
 CvInvoke.Imdecode(bytes, ImreadModes.Unchanged, source);
  int channels = skBitmap.BytesPerPixel;
 source = new Mat(new System.Drawing.Size(skBitmap.Width, skBitmap.Height), DepthType.Cv8U, channels, 
skBitmap.GetPixels(), skBitmap.RowBytes);

throw Exception:

System.TypeInitializationException: TypeInitialization_Type, Emgu.CV.MatInvoke
 ---> System.TypeInitializationException: TypeInitialization_Type, Emgu.CV.CvInvoke
 ---> System.ExecutionEngineException: Attempting to JIT compile method '(wrapper native-to-managed) int Emgu.CV.CvInvoke:CvErrorHandler (int,intptr,intptr,intptr,int,intptr)' while running in aot-only mode. See https://docs.microsoft.com/xamarin/ios/internals/limitations for more information.
at Emgu.CV.CvInvoke..cctor()
   Exception_EndOfInnerExceptionStack
   at Emgu.CV.MatInvoke..cctor()
   Exception_EndOfInnerExceptionStack
   at Emgu.CV.Mat..ctor()

OS / Platform
Mac OS Sonoma 14.3.1

.Net version
.Net 8

CPU Architecture
ARM64

Emgu CV package used
Emgu.CV (4.8.1.5350)
Emgu.CV.Bitmap (4.8.1.5350)
Emgu.CV.runtime.maui.macos (4.8.1.5350)

This problem is occur in only Mac Platform (net8.0-maccatalyst with arm64).

Expected behavior
Emgu.CV.CvInvoke method work without any exception.

[hirendh]

This issue resolved now if any one felt this issue please add below code in csproj file

<PropertyGroup Condition="'$(RuntimeIdentifier)' == 'maccatalyst-arm64' and '$(Configuration)' == 'Release'">
		<MtouchInterpreter>-all,Emgu.CV</MtouchInterpreter>
		<MtouchInterpreter>-all,Emgu.CV.Bitmap</MtouchInterpreter>
	</PropertyGroup>

[emgucv]

Thanks for pointing that out.

This commit fix the problem too:
bbeb004

It will be included in the next release. You won't need to add the above project settings once the next release is out.