Pvr to png

[Guaripolo]

hi, we are working in a translation of J-League Spectacle Soccer from japanese to spanish. In the process we want to modify teams and update roosters, and also change japanese teams to argentine teams. I've written an extractor of some files that output .pvr files, but i've seen that almost/all tools to convert pvr to png or bmp are closed source and for windows. Now i'm working in linux and it's anyonning use wine to get some tools work.
I wonder if is possible to get the source code of some pvr to png (or bmp) tool, i think that you have one.

Thanks in advance.