Switching from DLLCall X86 to X64

[skijve]

Hello all,

I'm trying to use the x64 version of the OpenCV UDF (

)

And, without surprise, it does not work if I just replace the X86 dll by the X64 I downloaded 🙂

I think I, at least, have to adapt in/out variables types but it seems to not be enought (still problem calling DLL)

Can anyone give me some clue or checklist for a correct conversion from x86 to x64 ?

Thx guys,

Eva

[KaFu]

When x86 to x64 converted dll calls fail it normally is related to wrong data types being used. Take a look at DllStructCreate, there are some type which change "depending on if the x86 or x64 version of AutoIt is used", and often these are not used correctly. E.g. INT in x86 is 32bit and INT_PTR is 32 bit too. But if you change to x64 INT_PTR is 64 bit and must not be used for INT datatypes and vice versa. Check the documentation of OpenCV for the datatypes to use and valid the definition against the datatypes used in the UDF.

[mLipok]

17 hours ago, skijve said:

And, without surprise, it does not work if I just replace the X86 dll by the X64 I downloaded

You also need to specify that you want to use x64 of AutoIt

[skijve]

Thx guys, I'll check.  I keep you posted

[skijve]

It comes from the following line that make crash the code : 

 

Local $_aResult = DllCall($_opencv_core, "int64:cdecl", "cvGetSize", "ptr", $pimage)

But no idea why 🙂

[jchd]

X64 doesn't use the cdecl calling convention.

[skijve]

Hello,

Didn't know that.  Thx for the hint.

I also found an interresting tutorial

Working on that 🙂

Thx again for the help guys

[skijve]

Well... it continues to just crash.

Is there any way to debug such annoying crash ? 

[KaFu]

Post a Zip of what you got and assume to work (incl. DLLs) and I'll take a look.

[LarsJ]

Some work has already been done regarding newer versions of OpenCV code as well as 64 bit code. It seems to start in this post and continue through  out the rest of the thread.

By quickly skimming through the posts, it doesn't appear to be completely trivial, but also not completely unmanageable. May be it was an idea to start a new project under Projects and Collaboration to gather interested forces. After all, it's about the core areas of application of AutoIt, and therefore not uninteresting.