Feature #395

Add a data area to the Value interface and ValueType implementation

Added by Andreas Huggel over 14 years ago. Updated over 10 years ago.

Status:ClosedStart date:
Priority:NormalDue date:
Assignee:Andreas Huggel% Done:


Target version:-


For certain Exif tags the regular value (in the IFD) is just an offset to a data area outside of the IFD. Examples are Exif tag 0x8769 in IFD0 (points to the Exif IFD) or tag 0x0201 in IFD1 (JPEG thumbnail image).

A concept is needed to allow linking this data area to a value, if desired. Ifd will need to be aware of the data area.

The new concept will be used to support the creation of Exif thumbnails from scratch.

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