Exif and IPTC metadata library and tools v0.14

Exiv2 Overview

Exiv2 comprises of a C++ library and a command line utility to access image metadata. Exiv2 is free software. The homepage of Exiv2 is at http://www.exiv2.org/.

The Exiv2 library provides

• full read and write access to the Exif and IPTC metadata of an image through Exiv2 keys and standard C++ iterators
• a smart IPTC implementation that does not affect data that programs like Photoshop store in the same image segment
• Exif MakerNote support:
  • MakerNote tags can be accessed just like any other Exif metadata
  • a sophisticated write algorithm avoids corrupting the MakerNote:
      1) the MakerNote is not re-located if possible at all, and
      2) MakerNote Ifd offsets are re-calculated if the MakerNote needs to be moved (for known Ifd MakerNotes)
• extract and delete methods for Exif thumbnails (both, JPEG and TIFF thumbnails)
• set methods for Exif thumbnails (JPEG only, TIFF thumbnails can be set from individual tags)
• complete API documentation

Getting started

A few pointers to get you started with the Exiv2 library without delay.

Exif and MakerNote tags and IPTC datasets

• Standard Exif tags
• Canon MakerNote tags
• Fujifilm MakerNote tags
• Minolta MakerNote tags
• Nikon MakerNote tags
• Olympus MakerNote tags
• Panasonic MakerNote tags
• Sigma/Foveon MakerNote tags
• Sony MakerNote tags
• IPTC datasets

File Formats

• JPEG
• Canon CRW
• TIFF and related RAW formats (Adobe DNG, Canon CR2, Fujifilm RAF, Minolta MRW, Nikon NEF, Pentax PEF, Sony ARW and Sony SR2), read-only
• PNG, read-only

Support

Please write to the Yahoo! group for Exiv2 help and discussions.

Join the group to post and receive messages or use exiv2user/password to post anonymously. Bug reports can be submitted directly to the bug tracking system.

Development

Exiv2 is maintained in a publicly available subversion repository. There is a live list with the latest commits to the repository, and you can browse the source code online.

To check-out the current source code from the repository, you need a subversion client. If you use a command line client, change to the directory where you want to keep the source code and type:

$ svn checkout svn://dev.robotbattle.com/exiv2/trunk . 

To download the test data and test drivers for version 0.14 from the repository, change to your local exiv2-0.14 directory and use the following command:

$ svn export svn://dev.robotbattle.com/exiv2/tags/0.14/test 

If you'd like to contribute code, please contact me.

License

Copyright (C) 2004-2007 Andreas Huggel <ahuggel@gmx.net>

Exiv2 is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Alternatively, Exiv2 is also available with a commercial license, which allows it to be used in closed-source projects. Contact me for more information.

Exiv2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.

---