Add the heic and heif image mimetypes to the gallery base mimetypes.

[steiny2k]

Fixes: #737
Equivalent to: nextcloud/gallery#464
Licence: MIT or AGPL

Description

Adds the two mime types 'image/heic' and 'image/heif' to the default list of base types that can be shown in the gallery.

In order to make use of it, the server needs to provide a sufficiently up-to-date imagemagick installation with libheif support

Features

• renders previews for HEIF images
• as well as shows the HEIF images in the slideshow

Screenshots or screencasts

Caveats

• ImageMagick with libheif support needs to be installed in the server.

Tests

Test plan

• upload a test photo from iPhon to owncloud
• make sure the thumbnail gets rendered in the files view and the file details show a preview already
• enter the same folder in the gallery app view
  • make sure the thumbnail is shown in the gallery app
  • make sure a slideshow displays the image in full-screen too.

Tested on

• macOS / Safari
• macOS / Firefox

TODO

Check list

• Code is properly documented
• Code is properly formatted
• Commits have been squashed
• Tests (unit, integration, api and/or acceptance) are included
• Documentation (manuals or wiki) has been updated or is not required

Reviewers

[PVince81]

👍