I tried many DNGs and raws from different cameras, and besides for the SD980 problem I reported yesterday, which was not really LibRaw's fault, they all worked very nicely, and I got results comparable to RawTherapee.

Hi there,

I've been trying to use LibRaw on a project, but keep running into an issue where the output images don't look "contrasty" enough -- they differ substantially in contrast from both the embedded previews in the JPEG, as well as ACR and FastRawViewer (which I understood uses libraw internally?)

Looking in FRV, there's an option called "contrast curve type", which is set to "variable contrast" -- I think this is what I'm missing.

How do I invoke libraw such that it mirrors the "variable contrast" setting, so that my images look right?

Thanks!

Please correct in the documentation information about aber

aber[2], the green multiplier.

In fact, this is a blue multiplier

Hi Alex,

on my libraw port on android, I'm getting a SIGSEGV (signal 11 (SIGSEGV), code 2 (SEGV_ACCERR)) in the xtrans_decode_block function when trying to call "libraw_unpack" on a raf file reported by an user (X-T20)(see link below). What I tried is to check at which point exactly it crashes (it's a little tricky under android), and found out that it fails somewhere in the last loop (logged the state at line 712, the last output before it fails is:
xtrans_decode_block 22 15 512 (22 = g_even_pos, 15 = g_odd_pos, 512 = line_width)

Is there a way to specify libraw to use the L-star gamma function? Or do I need to manually apply the function, and then specify the libraw linear function?
I mean this formula (from lindblum.com): (linear <= (216.0 / 24389.0)) ? (linear * 24389.0 / 2700.0) : (1.16 * Math.pow(linear, 1.0 / 3.0) - 0.16);