Struct to describe how a metadata variable is mapped from the name used by the image file module to the name used by Gegl. An optional transform function may be specified, e.g. to transform from a #GDatetime to a string.
Name of metadata variable used in the file module.
Standard metadata variable name used by Gegl.
Optional #GValue transform function.
Struct to describe how a metadata variable is mapped from the name used by the image file module to the name used by Gegl. An optional transform function may be specified, e.g. to transform from a #GDatetime to a string.