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JXR: added support to EXIF metadata

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Improved metadata support via EXIF ​​metadata. Since JXR is based on a TIFF container, EXIF ​​data is read directly from the file so it always works (even with versions of libjxr that don't have the metadata reading API).

It also solves the following issues:
- Incorrect date format on saved JXR files (was saved in ISO format instead of `yyyy:MM:dd HH:mm:ss`).
- Incorrect date type setting in EXIF ​​data: the `DateTime` tag should be updated on every save (verified by GIMP and Photoshop). Our `CreationDate` metadata is the equivalent of the EXIF ​​`DateTimeOriginal` tag.

Closes #22
This commit is contained in:
Mirco Miranda
2025-02-23 00:38:27 +00:00
committed by Albert Astals Cid
parent 90d4256f3d
commit e5cf9caac5
17 changed files with 327 additions and 42 deletions
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9
README.md
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@ -125,8 +125,9 @@ About the image:
example a verbal description of the image.
- `Copyright`: Copyright notice of the person or organization that claims
the copyright to the image.
- `CreationDate`: Creation date and time in ISO 8601 format without
milliseconds (e.g. 2024-03-23T15:30:43).
- `CreationDate`: When the image was created or captured. Date and time in
ISO 8601 format without milliseconds (e.g. 2024-03-23T15:30:43). This value
should be kept unchanged when present.
- `Description`: A string that describes the subject of the image.
- `DocumentName`: The name of the document from which this image was
scanned.
@ -136,6 +137,9 @@ About the image:
north of the equator (e.g. 27.717).
- `Longitude`: Floating-point number indicating the longitude in degrees
east of Greenwich (e.g. 85.317).
- `ModificationDate`: Last modification date and time in ISO 8601 format
without milliseconds (e.g. 2024-03-23T15:30:43). This value should be
updated every time the image is saved.
- `Owner`: Name of the owner of the image.
- `Software`: Name and version number of the software package(s) used to
create the image.
@ -189,6 +193,7 @@ are created automatically:
- `Software`: Created using `applicationName` and `applicationVersion` methods
of [`QCoreApplication`](https://doc.qt.io/qt-6/qcoreapplication.html).
- `CreationDate`: Set to current time and date.
- `ModificationDate`: Set to current time and date.
### ICC profile support