48 lines
1.2 KiB
Elixir
48 lines
1.2 KiB
Elixir
# Portions of this file are derived from Pleroma:
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# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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# Upstream: https://git.pleroma.social/pleroma/pleroma/-/blob/develop/lib/pleroma/upload/filter/analyze_metadata.ex
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defmodule Mobilizon.Web.Upload.Filter.AnalyzeMetadata do
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@moduledoc """
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Extracts metadata about the upload, such as width/height
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"""
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require Logger
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alias Mobilizon.Web.Upload
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@behaviour Mobilizon.Web.Upload.Filter
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@spec filter(Upload.t()) ::
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{:ok, :filtered, Upload.t()} | {:ok, :noop} | {:error, String.t()}
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def filter(%Upload{tempfile: file, content_type: "image" <> _} = upload) do
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image =
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file
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|> Mogrify.open()
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|> Mogrify.verbose()
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upload =
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upload
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|> Map.put(:width, image.width)
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|> Map.put(:height, image.height)
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|> Map.put(:blurhash, get_blurhash(file))
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{:ok, :filtered, upload}
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rescue
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e in ErlangError ->
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Logger.warn("#{__MODULE__}: #{inspect(e)}")
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{:ok, :noop}
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end
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def filter(_), do: {:ok, :noop}
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defp get_blurhash(file) do
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case :eblurhash.magick(to_charlist(file)) do
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{:ok, blurhash} ->
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to_string(blurhash)
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_ ->
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nil
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end
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end
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end
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