LibRaw technical support

Stable LibRaw versions: technical support, errors, API questions

DNG with jpeg-xl compresseion

Submitted by herb on

Hello,

Reading some posts in the XnViewMP forum, I found a DNG image that LibRaw does not convert into a JPEG image.
Please see: https://community.adobe.com/t5/camera-raw-discussions/samsung-s24u-exper...

I use the latest libraw compiled without dng-sdk.
The error message is: Cannot open : Unsupported file format or not RAW file

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RawSpeed Licensing vs. CDDL LibRaw

Submitted by Garfield on

I am interested in using RawSpeed 3. I pulled the code via the LibRaw page:

https://github.com/LibRaw/LibRaw/tree/0.21-stable/RawSpeed3

I am using LibRaw with the CDDL license, but the RawSpeed code has a license file which only seems to have an LGPL license.

Is that LGPL license not applicable in this case? Is there a way to use RawSpeed through the CDDL license?

Thank you.

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libraw with Adobe DNG SDK problem

Submitted by fidelespanto on

Hi Team,

I'm currently building a dll using libraw with adobe dng sdk to be used in windows appplication. I have followed the instructions in README.DNG.

I have created a DNG SDK 1.4 static library and linked in the libraw project. I have also included the directory of adobe dng src to libraw project. I did defined qWinUniversal in dng_sdk project.

I have defined USE_DNGSDK in the libraw project and upon compilation the following errors were prompted (see attached screenshot). It seems like it cannot locate the definition body in the dng_sdk lib.

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libraw unable to open dng file

Submitted by fidelespanto on

Hi Team,

I have a DNG file and tried to decode it libraw without Adobe DNG SDK.

When I tried to open_buffer, load_raw was identified as lossy_dng_load_raw but then raw_count is zero so it returned -2.

Do I need to use Adobe DNG or is it expected to work just with libraw?

I have attached the image in this link, https://drive.google.com/file/d/18QaZiL_YBEXwrmKd9638zHuWpOo54V5y/view?u...

Thank you and best regards,
Fidel

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Not able to use Libraw 0.21.1 for intel mac

Submitted by pratyush1687 on

I downloaded the libraw binaries from the download page for macos

my macos version is 11.7.4, using in c++ gives me linked x86_64 architecture symbol(s) not found error...

I have also tried building it from scratch using both

make and
make - f makefile.dist

in that case I run into the following error when I try to run the file from another computer
< It was codesigned and notarized >

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ImageMagick signatures are different when using 0.20.2 vs 0.21.1

Submitted by hughbiquitous on

I'm trying to do duplicate detection in my photo library and I was experimenting with using ImageMagick's identify -verbose tool to get a signature (SHA256 hash) of the pixel data.

A problem arose when I ran it on my Mac, which used the Homebrew distribution of LibRaw (the latest; 0.21.1) but I was getting mismatches on my Ubuntu 22.04 machine (which gets 0.20.2 of LibRaw). Once I built 0.21.1 on the Linux machine, the signatures were identical as expected, so I don't think it's an ImageMagick issue.

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