[wp-trac] [WordPress Trac] #14459: Rotate Full Size Images on Upload

[WordPress Trac]

#14459: Rotate Full Size Images on Upload
-------------------------------------------+-----------------------------
 Reporter:  mrroundhill                    |       Owner:  azaozz
     Type:  enhancement                    |      Status:  reviewing
 Priority:  normal                         |   Milestone:  Future Release
Component:  Upload                         |     Version:  3.0
 Severity:  normal                         |  Resolution:
 Keywords:  needs-patch westi-like mobile  |     Focuses:
-------------------------------------------+-----------------------------

Comment (by msaggiorato):

 Back when I posted my patch (which half solved the issue), I kept working
 on this issue. And came to realize that the GD library is not the best way
 to solve this issue as there are much more things in place than just the
 EXIF rotation change.

 After a bunch of research about the binary format of JPEG files, i came
 across this library [https://github.com/lsolesen/pel].

 With the help of this library, i was able to extract most of the EXIF data
 from one image, and put it into the corrected image generated by the GD
 library (that has no EXIF data, or color profile, or any other
 information).

 I also went a bit further and even fixed the thumbnail of the PNG (as it
 may be required, and it also should be consistent with the full image).

 In the end, I managed to make this work at a decent level. But didn't post
 back the solution here because it involved too much server work and image
 data binary manipulation, that shouldn't happen if browsers did their job
 nicely.

 I also thought that a solution like the one I implemented wouldn't be
 totally approved by the community.

 I'll try to put together a GitHub gist with my solution as it is now if
 someone's interested.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/14459#comment:32>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform