try {
Jp2_source inputSource = new Jp2_source();
Kdu_compressed_source input = null;
Jp2_family_src jp2_family_in = new Jp2_family_src();
Jp2_locator loc = new Jp2_locator();
jp2_family_in.Open(sourceFile, true);
inputSource.Open(jp2_family_in, loc);
inputSource.Read_header();
input = inputSource;
Kdu_codestream codestream = new Kdu_codestream();