libjxl 0.8.1's 'cjxl' can losslessly convert a regular JPEG image to JPEG XL format. The resulting .jxl file has Exif metadata compressed using the Brotli algorithm. Exiv2 0.28.0 adds support for Brotli, but the ebuild currently has Brotli hard disabled. This patch adds a brotli USE flag and enables Brotli support, which allows for metadata decoding. (Among other things, since KDE's KFileMetaData uses Exiv2, this allows JPEG XL metadata to be displayed in Dolphin, exactly the same as JPEG metadata is currently displayed.) Reproducible: Always Steps to Reproduce: 1. Convert a JPEG image to JPEG XL using `cjxl`. 2. Attempt to view metadata using `exiv2 file.jxl`. Actual Results: `exiv2` says: "No Exif data found in the file" Expected Results: `exiv2` prints the same Exif metadata it would have displayed for the original JPEG file.
Created attachment 872188 [details, diff] exiv2-0.28.0: Add brotli USE flag
It would seem very non-obvious by USE=brotli enabling JPEG XL features in packages. USE=jpegxl is an established flag for that purpose.
Created attachment 872218 [details, diff] exiv2-0.28.0: Add jpegxl USE flag I used brotli as the USE flag because Exiv2's CMake option is specifically for enabling Brotli support, since it does support some JPEG XL functionality without it. Though, since it's mainly used for JPEG XL, it does make sense to rename it. Attached is the same patch as before but with USE=jpegxl instead of USE=brotli.
can confirm brotli support works fine with exiv2-0.28.1-r2.ebuild aswell
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fd5f96251585aea0a96136b348925bdc04273273 commit fd5f96251585aea0a96136b348925bdc04273273 Author: Andreas Sturmlechner <asturm@gentoo.org> AuthorDate: 2024-04-20 12:42:05 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2024-04-20 12:57:20 +0000 media-gfx/exiv2: Add IUSE jpegxl Also fix DEPENDs, amends commit 796df1b8e5b17ac16f93676c64acd055eb337cc7 Thanks-to: David Korth Closes: https://bugs.gentoo.org/915213 Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org> media-gfx/exiv2/exiv2-0.28.2-r1.ebuild | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)
