AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

2006.06.09 19:35 "[Tiff] Way to write Exif tags using libtiff 3.8.2", by Caulier Gilles

Hi all,

I'm the main developper of digiKam, an open-source GUI applications to manage photograph under linux (http://www.digikam.org)

In digiKam, we have a pictures editor and an interface to extract Exif/Iptc metadata from RAW, JPEG, PNG, and TIFF files format (16 bits color depth supported).

I'm currently trying to finalize a TIFF codec to write a tiff file with metadata support. All work fine excepted the EXIF tags using libtiff 3.8.2.

My current TIFF codec source code is here:

http://websvn.kde.org/trunk/extragear/graphics/digikam/libs/dimg/loaders/tiffloader.cpp?rev=547372&view=auto

I'm sure that my implementation about Exif tags recording is wrong in TIFFLoader::save() method. Duing a big difficulty to found substancial informations (source code examples in fact) about Exif tags support and libtiff, I'm trying this mailing (:=)))...

Please, let's me hear what is wrong in my implementation. Thanks in advance for your help and your comments.

Best Regards

Gilles Caulier