gwenview raw preview

[Aurélien Gâteau]

> Hi,
>
> I got another bunch of news: I added support for displaying preview
> even for those raw files which don't have the embedded preview. It's
> demosaiced, but thanks to the kdcraw's loadHalfPreview it's faster
> than full demosaic (although it's noticeably slower than loading
> embedded preview) - it's sampled down to 1/2 (3000x2000px ->
> 1500x1000px). Thanks to this, I am able to view correctly raw files
> from Nokia Lumia 1020/1520, world's first phones with raw support
> (41mpx), announced last tuesday:
> http://conversations.nokia.com/2013/10/29/another-nokia-first-digital-negatives-raw-dng-lumia/:)

OMG, a phone with raw support... talk about feature creep :)

Anyway, using loadHalfPreview sounds good. Would have preferred to have
it proposed in a separate review, but I am replying too late, so... let
it be in.

> Another good news: the patch to kdcraw has been accepted and the API
> change will be part of kdcraw in 4.12. Now I am going to propose
> analogic patch for loadHalfPreview (needed for the halfpreview support
> in gwenview).

Awesome!

Aurélien

PS: CC-ing gwenview-devel since it's of general interest