Feature Request: Photoshop Tags

[mschnell1]

I in fact do not need this, but as pre 0.6.0-Beta.5 versions could not handle some files of mine, it might be documented as a possible enhancement. Visible issue: as well ThumbsPlus as Explorer show something created by Photoshop as Comments or Title even if Little Exif (or whoever) sets the ImageDescription Exif Tag. Right now Little-Exif provides the option to completely remove the Photoshop Section (which is perfectly enough for my project). In a perfect world the (or some of the ) Photoshop tags might be read and written by Little_Exif.

[TechnikTobi]

Notes for future-Tobi:

• See issue #34
• The APP13 segment contains data that is related to the PSD file format
• There may be multiple APP13 segments in a single JPEG that need to be stitched together before they can be processed as a whole.
• This Photoshop data has its own structure that is not related to TIFF-based stuff like EXIF and e.g. utilizes Pascal Strings (that seemingly have 6 bytes as length prefix? Need source to further validate this) and Image Resource IDs, hex values that tell us what the specific data is.
• One such ID, 0x0404, is for IPTC-NAA records, which in turn may contain data that overrides the EXIF ImageDescription tag (again, see issue #34).
• Further analysis is required if/how APP12 plays a role here.