Claudio Ortolina
31 lines
899 B
Elixir
31 lines
899 B
Elixir
defmodule MusicLibrary.Records.Cover do
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alias Vix.Vips.{Image, Operation}
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fallback_path = Application.app_dir(:music_library, ["priv", "cover-not-found.jpg"])
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fallback_data = File.read!(fallback_path)
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@external_resource fallback_path
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@default_size 2000
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@default_format "image/jpeg"
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def fallback_data, do: unquote(fallback_data)
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def resize(cover_data, size \\ @default_size, format \\ @default_format) do
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{:ok, thumb} = Operation.thumbnail_buffer(cover_data, size)
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Image.write_to_buffer(thumb, extension(format))
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end
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def convert(cover_data, data_format, target_format) do
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if data_format == target_format do
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{:ok, cover_data}
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else
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{:ok, image} = Image.new_from_buffer(cover_data)
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Image.write_to_buffer(image, extension(target_format))
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end
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end
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defp extension("image/jpeg"), do: ".jpg"
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defp extension("image/webp"), do: ".webp"
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end
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