Try dcptool, a free command-line tool for windows and MacOS, downloadable from here:
http://dcptool.sourceforge.net/Introduction.html
dcpTool can do five things:
- Decompile binary format DCP files into a text based XML format. This XML file can then be studied and/or edited with a text editor or specialized XML tool.
- Compile XML format DCP files into binary files that can be used with any DCP aware software.
- Extract DCP profiles that are embedded into DNG files into a separate DCP file.
- Make a profile Invariate. An invariate profile won’t cause changes tint when you make adjustments to exposure settings. More on this on the Hue Twists page.
- Untwist a profile. An invariate profile won’t change color when you adjust exposure settings, but still has hue twists embedded within it. Untwisting a profile removes all hue twists completely. More on this on the Hue Twists page.
There is a free graphical front-end for dcpTool called dcpEdit.
dcpEdit is written by Michael Hußmann, writer for German magazine docma. You must register with their website to get a free download linkto dcpEdit.