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Hi all,

I am looking for a free portable library to read images files in the most common formats from a C++ program: Bmp, Png, Tiff and Jpeg are a must.

The library must be usable under Windows / Visual C++ as well as Linux Ubuntu / gcc (Eclipse). Can be precompiled or source code.

I need a proven solution that works under these environments.

I know that there is ImageMagick. I am busy trying FreeImage (but facing a few issues). There are plenty of other solutions that I have no time to try individually. Nor do I want to integrate the individual packages that are provided for these formats.

Can you advise me of something you have used personally and that meets my requirements ?

Thanks a lot
Posted 16-Nov-12 3:19am
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Solution 1

ImageMagick would do the trick, have a look at:
ImageMagick: Convert, Edit, Or Compose Bitmap Images[^] and Magick++ C++ API[^] - it's a great package.

Best regards
Espen Harlinn
YvesDaoust 16-Nov-12 9:43am

Will it integrate seamlessly ? I think it is overfeatured compared to my needs.
Espen Harlinn 16-Nov-12 9:45am
It's pretty easy to use, if that's what you mean ...
YvesDaoust 16-Nov-12 10:44am
yes, I mean no compilation issues, no need to fetch extra headers files, adjust linker settings, read endless manual...
Espen Harlinn 17-Nov-12 5:55am
This is usually a no-hassle operation :-D
Have a look at:
Sergey Alexandrovich Kryukov 19-Nov-12 18:35pm
Using this API is a good idea, a 5.
Espen Harlinn 19-Nov-12 18:35pm
Thank you, Sergey :-D
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Solution 2

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Solution 4

In the end, I have used FreeImage and made it run under Windows and Linux Ubuntu, both 32 and 64 bits. For some reason, I couldn't compile the source code under Linux and had to rely on the self-building package. Anyway, FreeImage gave me all the services I expected. Two to three days of work in total for integration and mastership.

Since then, I have also integrated genuine packages for Jpeg and Png in another application (IJG JPEG-9a and Lib Png-1.6.2). I have not used them to full power (this takes a lifetime), but the sources compiled seamlessly under Windows and Linux. You need to find good sample programs to assemble a running solution.
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Solution 3

I dont know about ImageMagick but I am using GDI+ for windows. I dont think so it works for Linux. And FreeImage is good library which work in both windows and Linux.
YvesDaoust 21-Nov-12 2:24am
I tried FreeImage and it didn't compile under Windows unless I fixed the code. Then I tried a test program and it didn't link because of a missing function. Though I was trying the Windows-ready package for Visual Studio.

How can I trust a package in such conditions ?
rswapna28 22-Nov-12 1:12am
I used FreeImage library for loading images. It worked fine for me. I don't know why it didn't compile for you.

If you have trouble in using FreeImage, just try looking this example. you might get some help from it.
(Texture loading with FreeImage - OpenGL/C++)
Download this example and check.
YvesDaoust 22-Nov-12 6:46am
I confirm that using FreeImage is not a seamless experience.

One of the failures of the test program is a source file not included in the project ! You wonder if the package was tested before release.

Another is a runtime error message you get when trying the same test program and using the test images: "*** TIFF Format
Error while opening TIFF: data is invalid ***"

Yet another, more annoying issue is the assertion error at run-time when running under Linux: Assertion `sizeof(uint64)==8' failed.

I guess I'll find my way through, but this is exactly the kind of time-wasters I wanted to avoid...

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