tree 468e610d0f0fa642f06f4ea558b44c7e545beed9
parent 90131a9189edf8089d6696f5539d49c16bf5adec
author Jaesung Chung <jaesung@google.com> 1453168110 +0900
committer Jaesung Chung <jaesung@google.com> 1453887636 +0900

Enable reading a thumbnail from RAW image files in MtpDatabase

Also introduce new supported RAW image file formats, PEF and SRW.

RAW image file formats are not defined in PTP 1.2 specification except
for DNG. They are mostly built on top of TIFF or TIFF/EP. (Fuji's RAF
is the exception).

In this CL, image file formats are classified newly as below:

DNG: dng
TIFF: cr2, nrw, arw, rw2, orf, pef, srw
TIFF/EP: nef
Unknown Image Formats(FORMAT_DEFINED): wbmap, webp, raf

I referred to the following documents for defining MTP formats of RAW
images:

* http://www.rags-int-inc.com/PhotoTechStuff/RawStandards/RawSummary.html
* https://en.wikipedia.org/wiki/Raw_image_format

Bug: 26552863, Bug: 26626825
Change-Id: Ia218f6320c4c1ff051a23ca0060ceac46134b0d7