2 files changed, 44 insertions, 53 deletions

diff --git a/lib/pleroma/helpers/media_helper.ex b/lib/pleroma/helpers/media_helper.ex
index 24c845fcd..07dfea55b 100644
--- a/lib/pleroma/helpers/media_helper.ex
+++ b/lib/pleroma/helpers/media_helper.ex
@@ -8,11 +8,12 @@ defmodule Pleroma.Helpers.MediaHelper do
   """
 
   alias Pleroma.HTTP
+  alias Vix.Vips.Operation
 
   require Logger
 
   def missing_dependencies do
-    Enum.reduce([imagemagick: "convert", ffmpeg: "ffmpeg"], [], fn {sym, executable}, acc ->
+    Enum.reduce([ffmpeg: "ffmpeg"], [], fn {sym, executable}, acc ->
       if Pleroma.Utils.command_available?(executable) do
         acc
       else
@@ -22,54 +23,22 @@ defmodule Pleroma.Helpers.MediaHelper do
   end
 
   def image_resize(url, options) do
-    with executable when is_binary(executable) <- System.find_executable("convert"),
-         {:ok, args} <- prepare_image_resize_args(options),
-         {:ok, env} <- HTTP.get(url, [], pool: :media),
-         {:ok, fifo_path} <- mkfifo() do
-      args = List.flatten([fifo_path, args])
-      run_fifo(fifo_path, env, executable, args)
+    with {:ok, env} <- HTTP.get(url, [], pool: :media),
+         {:ok, resized} <-
+           Operation.thumbnail_buffer(env.body, options.max_width,
+             height: options.max_height,
+             size: :VIPS_SIZE_DOWN
+           ) do
+      if options[:format] == "png" do
+        Operation.pngsave_buffer(resized, Q: options[:quality])
+      else
+        Operation.jpegsave_buffer(resized, Q: options[:quality], interlace: true)
+      end
     else
-      nil -> {:error, {:convert, :command_not_found}}
       {:error, _} = error -> error
     end
   end
 
-  defp prepare_image_resize_args(
-         %{max_width: max_width, max_height: max_height, format: "png"} = options
-       ) do
-    quality = options[:quality] || 85
-    resize = Enum.join([max_width, "x", max_height, ">"])
-
-    args = [
-      "-resize",
-      resize,
-      "-quality",
-      to_string(quality),
-      "png:-"
-    ]
-
-    {:ok, args}
-  end
-
-  defp prepare_image_resize_args(%{max_width: max_width, max_height: max_height} = options) do
-    quality = options[:quality] || 85
-    resize = Enum.join([max_width, "x", max_height, ">"])
-
-    args = [
-      "-interlace",
-      "Plane",
-      "-resize",
-      resize,
-      "-quality",
-      to_string(quality),
-      "jpg:-"
-    ]
-
-    {:ok, args}
-  end
-
-  defp prepare_image_resize_args(_), do: {:error, :missing_options}
-
   # Note: video thumbnail is intentionally not resized (always has original dimensions)
   def video_framegrab(url) do
     with executable when is_binary(executable) <- System.find_executable("ffmpeg"),
diff --git a/lib/pleroma/upload/filter/analyze_metadata.ex b/lib/pleroma/upload/filter/analyze_metadata.ex
index 9a76a998b..e510ae3e6 100644
--- a/lib/pleroma/upload/filter/analyze_metadata.ex
+++ b/lib/pleroma/upload/filter/analyze_metadata.ex
@@ -8,22 +8,23 @@ defmodule Pleroma.Upload.Filter.AnalyzeMetadata do
   """
   require Logger
 
+  alias Vix.Vips.Image
+  alias Vix.Vips.Operation
+
   @behaviour Pleroma.Upload.Filter
 
   @spec filter(Pleroma.Upload.t()) ::
           {:ok, :filtered, Pleroma.Upload.t()} | {:ok, :noop} | {:error, String.t()}
   def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _} = upload) do
     try do
-      image =
-        file
-        |> Mogrify.open()
-        |> Mogrify.verbose()
+      {:ok, image} = Image.new_from_file(file)
+      {width, height} = {Image.width(image), Image.height(image)}
 
       upload =
         upload
-        |> Map.put(:width, image.width)
-        |> Map.put(:height, image.height)
-        |> Map.put(:blurhash, get_blurhash(file))
+        |> Map.put(:width, width)
+        |> Map.put(:height, height)
+        |> Map.put(:blurhash, get_blurhash(image))
 
       {:ok, :filtered, upload}
     rescue
@@ -53,7 +54,7 @@ defmodule Pleroma.Upload.Filter.AnalyzeMetadata do
   def filter(_), do: {:ok, :noop}
 
   defp get_blurhash(file) do
-    with {:ok, blurhash} <- :eblurhash.magick(file) do
+    with {:ok, blurhash} <- vips_blurhash(file) do
       blurhash
     else
       _ -> nil
@@ -77,7 +78,28 @@ defmodule Pleroma.Upload.Filter.AnalyzeMetadata do
       %{width: width, height: height}
     else
       nil -> {:error, {:ffprobe, :command_not_found}}
-      {:error, _} = error -> error
+      error -> {:error, error}
+    end
+  end
+
+  defp vips_blurhash(%Vix.Vips.Image{} = image) do
+    with {:ok, resized_image} <- Operation.thumbnail_image(image, 100),
+         {height, width} <- {Image.height(resized_image), Image.width(resized_image)},
+         max <- max(height, width),
+         {x, y} <- {max(round(width * 5 / max), 1), max(round(height * 5 / max), 1)} do
+      {:ok, rgb} =
+        if Image.has_alpha?(resized_image) do
+          # remove alpha channel
+          resized_image
+          |> Operation.extract_band!(0, n: 3)
+          |> Image.write_to_binary()
+        else
+          Image.write_to_binary(resized_image)
+        end
+
+      Blurhash.encode(rgb, width, height, x, y)
+    else
+      _ -> nil
     end
   end
 end