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Use of AND operators in dcraw_common.cpp

Submitted by Anonymous (not verified) on

Dear all,

When compiling LibRaw on OS X 10.7.3 (as part of compiling Darktable, actually) Clang gives me a few warnings about AND-ing actions in dcraw_common.cpp. I have pasted them below. They all look valid to me and would probably benefit from doing what the compiler suggests. Can someone please verify and fix this? Or is there another path I should follow to do this?

/Users/jhegeman/tmp_darktable/darktable/src/external/LibRaw/internal/dcraw_common.cpp:827:28: warning: & has lower precedence than >=; >= will be evaluated
      first [-Wparentheses]

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libraw support in delaboratory

Submitted by Jacek Poplawski on

hello,

I am author of http://code.google.com/p/delaboratory/
major version will be released soon, and after it I may think about new features, one of them is ability to import RAW files

I am just checking is libraw good candidate for that,
I looked into API but couldn't find answer to my question

I understand that standard output is in RGB, but is there any way to export image into LAB colorspace to avoid color profile dependency?

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Questions on licensing

Submitted by Luca Piccioni on

I'd like to ask about libraw (and libraw-lite) licensing.

Both libraries share the (almost) same code, and both are licenced under LGL 2.1; but libraw can be distributed choosing one of three available.

What are the main reason for this?

Reading the source, I can notice some comments like 'LIBRAW_DEMOSAIC_PACK_GPL3' or 'LIBRAW_DEMOSAIC_PACK_GPL2'... what is meaning? Portion of the code can be included only if distributed which some licences?

Thanks for your time!

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Question about "maximum", "channel_maximum[4]" data fields and an observaition...

Submitted by panos_m on

Hello,

I noticed that when exp_shift is used, the "maximum", "channel_maximum[4]" data fields are corrected accordingly by the exp_shift value. Why is that needed. I mean if a 12bit raw value is for example 3000, what is the reason to double it (exp_shift == 2.0) when 6000 exceeds the 12bit max possible value 4095?

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Festine Lente floating point implementation how?

Submitted by Elle Stone on

In the Festine Lente article, Iliah Borg concludes by saying:

"It looks like the time spent in postprocessing to get more details and counter-act artifacts might be better spent if demosaicking prepares a cleaner and more detailed image to start with. The processing time difference between integer and floating point implementations of demosaicking most of the times is less than 5 seconds, which is substantially less compared to the time spent on image editing to get close to the same result. Try it, and you will see."

On the "about" page, there is the comment:

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General questions about inclusion of LibRaw into dlRaw

Submitted by jdla on

Dear,

A bit on and off I'm contemplating to base my dlRaw on LibRaw.

dlRaw is GPL V3. Does it mean that I would have problems of licensing with most of the demosaicing packs ?

How is your process of tracking dcraw looking like ? I.e. how confident can I be that your approach is not going to give me more headaches then every now and then doing some 2 hours of intensive dcraw 3 way comparing to cope with the changes ?

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Win32 linking in MinGW

Submitted by davideanastasia on

Hi,
I'm a developer of Luminance HDR and in the next release (2.0.2, hopefully coming soon) we decided to use LibRaw has RAW converter instead of using dcraw as an external command line tool (old solution). After a bit of work, we implemented what we needed and it worked fine with Linux and OS X, but we are having problems in Windows, because our code is multithread so we need the thread-safe version.
When I tried to link (using MinGW) the DLL you provide (0.11.3), I get these errors:

./generated_obj\pfsinraw.o: In function `Z19readRawIntoPfsFramePKcS0_P16LuminanceOptionsb':

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