I'm looking for a image loading library to use with C# (more concretly, to use with Unity). I'm creating a multithreaded application that needs to load images in the background, and I cannot use Unity native functions, as those only work on the main thread and throw an exception otherwise.
I've been searching the net for some C# library, and I found it strange that there are none that are portable (at least that I can find).
I was able to find a png decoder buried inside a PDF library, and was able to make it work on Unity, but the code did not handle all PNGs correctly.
Suggestions?

EDiT: I've found DevIL, has a .net wrapper, however this wrapper only loads images as Bitmap, and this is not usable in Unity, but maybe I can create my own wrapper, still looking into it