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0.3.0
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0.1.0
An approachable image processing library primarily based upon Vix and libvips that is NIF-based, fast, multi-threaded, pipelined and has a low memory footprint.
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lib/kino.ex
defmodule Image.Kino do
@moduledoc false
# A convenience module to use with livebooks
# to render an image using Kino.
#
# Since Kino is not a dependency and to therefore
# avoid compiler warnings, we use `apply/3`
alias Vix.Vips.{Operation, Image}
@max_height 200
def show(%Image{} = image) do
height = Image.height(image)
# scale down if image height is larger than 500px
image =
if height > @max_height do
Operation.resize!(image, @max_height / height)
else
image
end
# write vips-image as png image to memory
{:ok, image_bin} = Image.write_to_buffer(image, ".png")
kino_image = apply(Kino.Image, :new, [image_bin, "image/png"])
apply(Kino, :render, [kino_image])
:ok
end
end