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 Loading PNG causes "WIC Failure" in 64bit

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T O P I C    R E V I E W
steinmpa Posted - Sep 20 2021 : 08:09:41
Hi,

we're using ImageEn Version 10.1.0 with Delphi 10.4.2.

By using ImageEn in an 64bit environment we get an Exception by processing PNG-Images (not with BMP/JPG!).

In following unit we get an Exception "ExceptionMessage="WIC Failure"":

iewic.pas:

procedure ConvertWICBitmapToIEBitmap(wicFactory: IE_IWICImagingFactory; source: IE_IWICBitmapSource; dest: TIEBitmap; nativePixelFormat: boolean = true; OnProgressFunc: TIEProgressEvent = nil);
...
  CheckHResult( converter.Initialize( source, pixelFormatGUID, IE_WICBitmapDitherTypeNone, nil, 0.0, 0 ));
...

CheckHResult is errorcode: "-2003292409":

Could you give us some information what could cause this exception and maybe ways to fix it.

Thanks in advance.
3   L A T E S T    R E P L I E S    (Newest First)
xequte Posted - Sep 21 2021 : 19:38:19
Hi

Yes, it's easy to miss that.

You should explicitly set the imaging engine to DLL so an error is raised if it is not found:

// Force use of IELib DLL for improved performance
// ImageEn will attempt to load the DLL even if it's not in the EXE folder. If the DLL isn't found or is an old version, an error will be raised
IEGlobalSettings().JPEGEngine := ieenDLL;
IEGlobalSettings().PNGEngine := ieenDLL;
IEGlobalSettings().JPEG2000Engine := ieenDLL;
IEGlobalSettings().CameraRawEngine := ieenDLL;


Nigel
Xequte Software
www.imageen.com
steinmpa Posted - Sep 21 2021 : 04:49:44
*Solved*

Our installation routine missed to update your mentioned ielib64.dll.
After correcting our update routine it now works like a charm.

Thanks for your help.
xequte Posted - Sep 20 2021 : 16:05:42
Hi

Firstly, you should use ielib64.dll in 64bit ImageEn, rather than WIC.

WIC has a numbers of limitations, particularly with PNG:

https://www.imageen.com/help/TIEImageEnGlobalSettings.PNGEngine.html


Secondly, tell me more about how to reproduce the WIC error.



Nigel
Xequte Software
www.imageen.com