Hi!

I don't really know much about the dcraw loader, since Anders Brander is
maintaining that part, but patches are of course very welcome.

(and also the libpng-1.5, especially if they are backwards compatible)

Regards, Klaus Post

http://www.klauspost.com


On Mon, Sep 19, 2011 at 00:00, Ille <[email protected]> wrote:

> Hi, I'm using the latest svn tree for a long time now. I had some
> trouble with loading x3f raw files: highlights (well, overexposed
> pixels) have a strange behaviour; some pixels get white (normal
> behaviour), but some become black. An ugly (but quick) way to
> bypass this behaviour is to shift the 12 bits values to 14 bits instead
> of 16 bits in the convert() function of dcrawloader.c. The resulting
> data will be a little bit darker, but the benefit of this is also that
> it reduce the annoying color banding (noise?) often seen in dark area
> with x3f produced with SD14 or SD15. Other gain, you don't need to
> recalculate the rgbMax, just use the one from dcraw and you save some
> cpu time.
>
> Oh, and if you like I can produce a patch ton make rawstudio SVN
> compile against libpng-1.5 (members of png_info are not accessible
> anymore).
>
> Regards,
> Ille
>
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