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 2003-2022, 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
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- http://www.ozhiker.com/electronics/pjmt/jpeg_info/irb_jpeg_qual.html
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- http://www.fileformat.info/format/psd/egff.htm
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- http://libpsd.graphest.com/files/Photoshop%20File%20Formats.pdf
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- http://www.adobe.com/devnet-apps/photoshop/fileformatashtml/
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Photoshop Tags in the Image::ExifTool::TagNames manpage,
Image::ExifTool(3pm),
Image::MetaData::JPEG(3pm)
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