Transform C++ source code to Java package

I need someone that will create me a java package from provided c++ code. The c++ code is currently in a format that can be very hard to read/follow because it was reversed engineered from a very old dll. I need the package to be runable in java. The purpose of the code is to transform a wavelet compressed image to a raw image format. I've included a couple of the functions of the C++ code for better understanding. The complete c++ source file is about 12,000 lines of code. There are no special packages or includes.