This repository was archived by the owner on Nov 19, 2020. It is now read-only.
This repository was archived by the owner on Nov 19, 2020. It is now read-only.
DllNotFoundException: ntdll on OS X #162
Description
I'm trying to get started with Accord, but it doesn't seem to want to read my image:
System.DllNotFoundException: ntdll.dll
at (wrapper managed-to-native) AForge.SystemTools:memset (byte*,int,int)
at AForge.SystemTools.SetUnmanagedMemory (System.Byte* dst, Int32 filler, Int32 count) [0x00000] in <filename unknown>:0
at AForge.SystemTools.SetUnmanagedMemory (IntPtr dst, Int32 filler, Int32 count) [0x00000] in <filename unknown>:0
at AForge.Imaging.UnmanagedImage.Create (Int32 width, Int32 height, PixelFormat pixelFormat) [0x00000] in <filename unknown>:0
at AForge.Imaging.Filters.BaseUsingCopyPartialFilter.Apply (AForge.Imaging.UnmanagedImage image) [0x00000] in <filename unknown>:0
at Accord.Imaging.Filters.WolfJolionThreshold.ProcessFilter (AForge.Imaging.UnmanagedImage sourceData, AForge.Imaging.UnmanagedImage destinationData) [0x00000] in <filename unknown>:0
at AForge.Imaging.Filters.BaseFilter.Apply (System.Drawing.Imaging.BitmapData imageData) [0x00000] in <filename unknown>:0
at AForge.Imaging.Filters.BaseFilter.Apply (System.Drawing.Bitmap image) [0x00000] in <filename unknown>:0
at <StartupCode$FSI_0001>.$FSI_0001.main@ () [0x00000] in <filename unknown>:0
at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
With this code:
let image : Bitmap = Bitmap.FromFile args.[0] :?> Bitmap
let wolfJoulion = Accord.Imaging.Filters.WolfJolionThreshold()
let result : Bitmap = wolfJoulion.Apply(image)
result.Save args.[1]It seems that UnmanagedImage needs ntdll which obviously isn't available on OS X.
Going directly against UnmanagedImage:
System.DllNotFoundException: ntdll.dll
at (wrapper managed-to-native) AForge.SystemTools:memset (byte*,int,int)
at AForge.SystemTools.SetUnmanagedMemory (System.Byte* dst, Int32 filler, Int32 count) [0x00000] in <filename unknown>:0
at AForge.SystemTools.SetUnmanagedMemory (IntPtr dst, Int32 filler, Int32 count) [0x00000] in <filename unknown>:0
at AForge.Imaging.UnmanagedImage.Create (Int32 width, Int32 height, PixelFormat pixelFormat) [0x00000] in <filename unknown>:0
at AForge.Imaging.Filters.BaseFilter.Apply (AForge.Imaging.UnmanagedImage image) [0x00000] in <filename unknown>:0
at <StartupCode$FSI_0001>.$FSI_0001.main@ () [0x00000] in <filename unknown>:0
at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
Code in question:
public static unsafe byte* SetUnmanagedMemory(byte* dst, int filler, int count)
{
return memset(dst, filler, count);
}
// Win32 memory copy function
[DllImport("ntdll.dll", CallingConvention = CallingConvention.Cdecl)]
private static unsafe extern byte* memcpy(byte* dst, byte* src, int count);
// Win32 memory set function
[DllImport("ntdll.dll", CallingConvention = CallingConvention.Cdecl)]
private static unsafe extern byte* memset(byte* dst, int filler, int count);