Image::ExifTool::Photoshop - Read/write Photoshop IRB meta information
This module is loaded automatically by Image::ExifTool when required.
Photoshop writes its own format of meta information called a Photoshop IRB
resource which is located in the APP13 record of JPEG files. This module
contains the definitions to read this information.
Photoshop IRB blocks may have an associated resource name. These names are
usually just an empty string, but if not empty they are displayed in the
verbose level 2 (or greater) output. A special
"SetResourceName" flag may be set to '1' in
the tag information hash to cause the resource name to be appended to the
value when extracted. If this is done, the returned value has the form
"VALUE/#NAME#/". When writing, the writer routine looks for this
syntax (if "SetResourceName" is defined),
and and uses the embedded name to set the name of the new resource. This
allows the resource names to be preserved when copying Photoshop information
via user-defined tags.
Copyright 2003-2021, Phil Harvey (philharvey66 at gmail.com)
This library is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
- <http://www.fine-view.com/jp/lab/doc/ps6ffspecsv2.pdf>
- <http://www.ozhiker.com/electronics/pjmt/jpeg_info/irb_jpeg_qual.html>
- <http://www.fileformat.info/format/psd/egff.htm>
- <http://libpsd.graphest.com/files/Photoshop%20File%20Formats.pdf>
- <http://www.adobe.com/devnet-apps/photoshop/fileformatashtml/>
"Photoshop Tags" in Image::ExifTool::TagNames,
Image::ExifTool(3pm), Image::MetaData::JPEG(3pm)