41 lines
1.0 KiB
Elixir
41 lines
1.0 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Helpers.MediaHelper do
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@moduledoc """
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Handles common media-related operations.
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"""
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def image_resize(url, %{max_width: max_width, max_height: max_height} = options) do
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quality = options[:quality] || 85
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cmd = ~s"""
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convert - -resize '#{max_width}x#{max_height}>' -quality #{quality} -
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"""
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pid = Port.open({:spawn, cmd}, [:use_stdio, :in, :stream, :exit_status, :binary])
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{:ok, env} = url |> Pleroma.Web.MediaProxy.url() |> Pleroma.HTTP.get()
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image = env.body
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Port.command(pid, image)
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loop_recv(pid)
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end
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defp loop_recv(pid) do
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loop_recv(pid, <<>>)
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end
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defp loop_recv(pid, acc) do
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receive do
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{^pid, {:data, data}} ->
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loop_recv(pid, acc <> data)
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{^pid, {:exit_status, 0}} ->
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{:ok, acc}
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{^pid, {:exit_status, status}} ->
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{:error, status}
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end
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end
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end
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