Supporting the Raw image format (digital negatives)

[oparoz]

The RAW image format is popular among photographers and what better than a cloud to store all these shots online to preview and share them?
The problem is that there isn't a standard like for PNG or JPEG. Most are based on TIFF, but use different headers.

Here is the list of formats supported by ImageMagick:

• Sony Alpha RAW .arw
• Canon RAW 2 .cr2
• Digital Camera Raw .dcr
• Digital Negative .dng
• EPSON RAW .erf
• Intelligent Image Quality RAW .iiq
• Kodak DC40/DC50 RAW .kdc
• Kodak DC25 RAW .k25
• Nikon RAW .nef
• Mamiya RAW .mef
• Olympus RAW .orf
• Panasonic RAW .rw2
• PENTAX RAW .pef
• Fujifilm RAW .raf
• Sony RAW File .srf .sr2
• SIGMA RAW .xrf

I've implemented support for CR2 and DNG, but I'm calling for experts to voice their opinion on whether we should support all extensions or not.

[oparoz]

cc @georgehrke @jancborchardt

[ghost]

Some refs for existing requests: owncloud-archive/apps#1113, owncloud-archive/apps#439

[oparoz]

Thanks @RealRancor :)

PR available here: #13652

[PVince81]

Linking your new PR here: #14878

Moving to 8.2

[oparoz]

Providers are no longer accepted in core. This may be available in the future as a patch or an app.