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Use EXIF data of image to prefill image description

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During attachment upload Pleroma returns a "description" field. Pleroma-fe has an MR to use that to pre-fill the image description field, <https://git.pleroma.social/pleroma/pleroma-fe/-/merge_requests/1399>

* This MR allows Pleroma to read the EXIF data during upload and return the description to the FE
    * If a description is already present (e.g. because a previous module added it), it will use that
    * Otherwise it will read from the EXIF data. First it will check -ImageDescription, if that's empty, it will check -iptc:Caption-Abstract
    * If no description is found, it will simply return nil, just like before
* When people set up a new instance, they will be asked if they want to read metadata and this module will be activated if so

This was taken from an MR i did on Pleroma and isn't finished yet.
This commit is contained in:
Ilja 2022-02-14 13:14:25 +01:00
commit cd316d7269
11 changed files with 219 additions and 14 deletions
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15
docs/installation/optional/media_graphics_packages.md
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@ -1,9 +1,9 @@
# Optional software packages needed for specific functionality
For specific Pleroma functionality (which is disabled by default) some or all of the below packages are required:
* `ImageMagic`
* `ffmpeg`
* `exiftool`
* `ImageMagic`
* `ffmpeg`
* `exiftool`
Please refer to documentation in `docs/installation` on how to install them on specific OS.
@ -14,19 +14,20 @@ Note: the packages are not required with the current default settings of Pleroma
`ImageMagick` is a set of tools to create, edit, compose, or convert bitmap images.
It is required for the following Pleroma features:
* `Pleroma.Upload.Filters.Mogrify`, `Pleroma.Upload.Filters.Mogrifun` upload filters (related config: `Plaroma.Upload/filters` in `config/config.exs`)
* Media preview proxy for still images (related config: `media_preview_proxy/enabled` in `config/config.exs`)
* `Pleroma.Upload.Filters.Mogrify`, `Pleroma.Upload.Filters.Mogrifun` upload filters (related config: `Plaroma.Upload/filters` in `config/config.exs`)
* Media preview proxy for still images (related config: `media_preview_proxy/enabled` in `config/config.exs`)
## `ffmpeg`
`ffmpeg` is software to record, convert and stream audio and video.
It is required for the following Pleroma features:
* Media preview proxy for videos (related config: `media_preview_proxy/enabled` in `config/config.exs`)
* Media preview proxy for videos (related config: `media_preview_proxy/enabled` in `config/config.exs`)
## `exiftool`
`exiftool` is media files metadata reader/writer.
It is required for the following Pleroma features:
* `Pleroma.Upload.Filters.Exiftool` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)
* `Pleroma.Upload.Filters.Exiftool` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)
* `Pleroma.Upload.Filters.ExiftoolReadData` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)