DLL Import fails on ESP was not properly saved accross a function call when using aruco V3

Question

I am trying to integrate ArUco V3 in a Unity project.

Therefore I created a .DLL which is imported as function like :

private static extern void functionName(uint, uint, float, float,float,float,IntPr,float)

The function in the header file is :

void functionName(unsigned int, unsigned int, float, float, float, float, float const*, float)

I am calling it with this method :

aruco::Markerdetector 
aruco::Cameraparameters(CalculateCameraMatrix(float, float, float, float), CalculateDistortionCoefficients(float const*), cvSize(uint, uint))

While running the application, opencv.core an opencvimgproc DLLs are constantly loaded and unloaded.

Is this a problem with the parameters conversion or is there a correlation with the calling convents which where used during compiling OpenCV.

Defect in your code. Provide a [mcve] and format it so that we can read it. Make use of the site help. — David Heffernan, Jan 17 '20 at 12:46

score 2 · Answer 1 · edited Jan 20 '20 at 14:41

2

Could solve the problem by adding the calling conventions to each dll import method separately

 [DllImport("Name", EntryPoint = "EntrypointName", CallingConvention =CallingConvention.Cdecl)]

edited Jan 20 '20 at 14:41

Ajith

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answered Jan 20 '20 at 14:14

kühlschrankDino

53
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DLL Import fails on ESP was not properly saved accross a function call when using aruco V3

1 Answers1