Hello all!

I have a problem over which i cannot continue the project. Please, if anybody can, help me.

So, the task is: I have pdf document, i need to convert its colorscheme to the CMYK.

I will very happy with any idea on this point: libraries, algorithms, other apps that could be used from my program (e.g. via command line) etc. Please help, its very important for me.

I hope for the answer, thanks in advance.