mogrifun.ex (1671B)
- # Pleroma: A lightweight social networking server
- # Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
- # SPDX-License-Identifier: AGPL-3.0-only
- defmodule Pleroma.Upload.Filter.Mogrifun do
- @behaviour Pleroma.Upload.Filter
- alias Pleroma.Upload.Filter
- @moduledoc """
- This module is just an example of an Upload filter. It's not supposed to be used in production.
- """
- @filters [
- {"implode", "1"},
- {"-raise", "20"},
- {"+raise", "20"},
- [{"-interpolate", "nearest"}, {"-virtual-pixel", "mirror"}, {"-spread", "5"}],
- "+polaroid",
- {"-statistic", "Mode 10"},
- {"-emboss", "0x1.1"},
- {"-emboss", "0x2"},
- {"-colorspace", "Gray"},
- "-negate",
- [{"-channel", "green"}, "-negate"],
- [{"-channel", "red"}, "-negate"],
- [{"-channel", "blue"}, "-negate"],
- {"+level-colors", "green,gold"},
- {"+level-colors", ",DodgerBlue"},
- {"+level-colors", ",Gold"},
- {"+level-colors", ",Lime"},
- {"+level-colors", ",Red"},
- {"+level-colors", ",DarkGreen"},
- {"+level-colors", "firebrick,yellow"},
- {"+level-colors", "'rgb(102,75,25)',lemonchiffon"},
- [{"fill", "red"}, {"tint", "40"}],
- [{"fill", "green"}, {"tint", "40"}],
- [{"fill", "blue"}, {"tint", "40"}],
- [{"fill", "yellow"}, {"tint", "40"}]
- ]
- @spec filter(Pleroma.Upload.t()) :: {:ok, atom()} | {:error, String.t()}
- def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
- try do
- Filter.Mogrify.do_filter(file, [Enum.random(@filters)])
- {:ok, :filtered}
- rescue
- e in ErlangError ->
- {:error, "#{__MODULE__}: #{inspect(e)}"}
- end
- end
- def filter(_), do: {:ok, :noop}
- end