LibRaw technical support

Stable LibRaw versions: technical support, errors, API questions

Infinite loop in jpeg_start method

Submitted by Soruk on

Hello,

We detected when using FreeImage an therfore LibRaw that for some JPEG files the jpeg_start method (from dcraw.common.cpp) the do while loop does not exists (there is no tag != 0xffda in the given JPEG file, but the image can be easily viewed on Windows using Paint for example).

Here is the fixed version fo the code (we added test for the EOF):

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Libraw build for iOS

Submitted by mrsin88 on

Hi,

I'm trying to get libraw to work with iOS.
I downloaded the zip file from Github. Then based on the replies at this http://www.libraw.org/node/2054. I'm able to get the static library libraw_r.a
When I add the library to my project, I'm able to build and read image successfully in simulator.
But when I'm trying to run it on a read device, I get the error that the library build doesn't support arm64. I checked and the library only work for architecture x84_64.

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Support for Canon EOS 80D RAWs

Submitted by mka on

I recently got a Canon EOS 80D, the model was released about two month ago. I use digikam (v4.14.0) for post-processing, which uses LibRaw (v0.17.1) for RAW decoding. The decoded .CR2 files from the 80D are very "hazy", with low contrast and a blueish cast.

I attached a JPEG (just RAW decoding + highlights raised) to this post, the corresponding RAW file can be found at https://drive.google.com/file/d/0B-fwGolScP68dzRTek9oYXY1M28/view?usp=sh...

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LibRaw 18.0 with LCMS2 and Libjpeg-turbo.

Submitted by KaroTK on

Hi again,

I was reading this http://www.linuxfromscratch.org/blfs/view/svn/general/libraw.html article and I saw that these libraries are *optional* I am trying to build a version of LibRaw that has support (is linked to) LCMS and Libjpeg Turbo.

So I went ahead and built everything LCMS and libjpeg the way I want. Now I am doing the following

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Extracting small resolution jpeg and GPS data from RAW files.

Submitted by KaroTK on

Hi,

I know that some RAW formats store a small resolution JPEG image for quick preview that is different from a thumbnail. I manage to extract that using third party software such as ExifTool, how is it possible to extract that using LibRaw? Also in the changelog I see that you have added an option for GPS data extraction, but when I try that i.e.

open the file and read the data from imgdata.other.gpsdata it always returns nothing. Is there anything else I should do for after open_file(fileName) to load the needed information?

And the same question for xmpData.

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Fuji X-E2 Firmware 4.0

Submitted by netgeek on

LibRaw used to support Fuji X-E2 raw files. But with the recent camera update to firmware 4.0, the raw file format seems to have changed and LibRaw is not able to read it. Here is the output from simple_dcraw and dcraw_emu. Both were compiled from the latest 0.18 source:

>simple_dcraw.exe Black.RAF
Black.RAF: Unexpected end of file
Cannot unpack Black.RAF: Input/output error

>dcraw_emu.exe -v "Black.RAF"
Processing file Black.RAF
Black.RAF: Unexpected end of file
Cannot unpack Black.RAF: Input/output error

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