darktable-org/darktable — pull request #569 by pedrocr (2014-05-21 18:13:45+00:00)
Title: Rawspeed support for the old Panasonic .RAW format

As it turns out the RW2 decoder already had a beginning of support disabled. I ended up extending that and figuring out that there are 3 different encodings within the format (unpacked, packed, and the same as the Rw2 format). As a further difficulty the packed format has a control byte every 10 pixels that needs to be skipped.