1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Upload.Filter.Mogrifun do
6 @behaviour Pleroma.Upload.Filter
12 [{"-interpolate", "nearest"}, {"-virtual-pixel", "mirror"}, {"-spread", "5"}],
14 {"-statistic", "Mode 10"},
17 {"-colorspace", "Gray"},
19 [{"-channel", "green"}, "-negate"],
20 [{"-channel", "red"}, "-negate"],
21 [{"-channel", "blue"}, "-negate"],
22 {"+level-colors", "green,gold"},
23 {"+level-colors", ",DodgerBlue"},
24 {"+level-colors", ",Gold"},
25 {"+level-colors", ",Lime"},
26 {"+level-colors", ",Red"},
27 {"+level-colors", ",DarkGreen"},
28 {"+level-colors", "firebrick,yellow"},
29 {"+level-colors", "'rgb(102,75,25)',lemonchiffon"},
30 [{"fill", "red"}, {"tint", "40"}],
31 [{"fill", "green"}, {"tint", "40"}],
32 [{"fill", "blue"}, {"tint", "40"}],
33 [{"fill", "yellow"}, {"tint", "40"}]
36 def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
37 filter = Enum.random(@filters)
41 |> mogrify_filter(filter)
42 |> Mogrify.save(in_place: true)
47 def filter(_), do: :ok
49 defp mogrify_filter(mogrify, [filter | rest]) do
51 |> mogrify_filter(filter)
52 |> mogrify_filter(rest)
55 defp mogrify_filter(mogrify, []), do: mogrify
57 defp mogrify_filter(mogrify, {action, options}) do
58 Mogrify.custom(mogrify, action, options)
61 defp mogrify_filter(mogrify, string) when is_binary(string) do
62 Mogrify.custom(mogrify, string)