Hello,
Surfing across Sourceforge.net, I found Freeimage, it is some kind of library that could be used to support a lot of graphical formats. It's located here: http://freeimage.sourceforge.net/ It seems to be a mature project, it's already at version 3.9.3
From what I saw on the website, it supports the following formats:
BMP files [reading, writing] DDS files [reading] Dr. Halo files [reading] * only grayscale GIF files [reading, writing] HDR files [reading, writing] ICO files [reading, writing] IFF files [reading] JBIG [reading, writing] ** only via external plugin, might require a commercial license JNG files [reading] JPEG/JIF files [reading, writing] KOALA files [reading] LBM files [reading] Kodak PhotoCD files [reading] MNG files [reading] PCX files [reading] PBM files [reading, writing] PGM files [reading, writing] PNG files [reading, writing] PPM files [reading, writing] PhotoShop files [reading] Raw Fax G3 files [reading] SGI files [reading] Sun RAS files [reading] TARGA files [reading, writing] TIFF files [reading, writing] WBMP files [reading, writing] XBM files [reading] XPM files [reading, writing]
Also, it is used by many opensource and commercial applications on different platforms (mac, win, linux) Could it be useful to Inkscape?
Thanks! Molumen