The file extension DCP identifies camera profiles for the Adobe dng (Digital Negative) format. Dcp files include camera-specific settings for hue and saturation of the three color channels and the shadows. These values are taken into account when importing raw files.
Adobe offers profiles for various cameras on its website. However, for example, you can create or modify ones yourself using the free DNG Profile Editor. Dcp files can be used in the Adobe Photoshop image-editing software and Lightroom photo management and editing software. Using a free command-line tool, DCP files can be converted into icc profiles for use in other programs.