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image
0.52.2
0.72.0
0.71.0
0.70.0
0.69.0
0.68.0
0.67.0
0.67.0-dev
retired
0.66.0
0.65.0
0.64.0
0.63.0
0.62.1
0.62.0
0.61.1
0.61.0
0.60.0
0.59.3
0.59.2
0.59.1
0.59.0
0.58.0
0.57.0
0.56.1
0.56.0
0.55.2
0.55.1
retired
0.55.0
0.54.4
0.54.3
0.54.2
0.54.1
0.54.0
0.53.0
0.52.3
0.52.2
0.52.1
0.52.0
retired
0.51.0
0.50.0
0.49.0
0.48.1
0.48.0
0.47.0
0.46.0
0.45.0
0.44.0
0.43.2
0.43.1
0.43.0
0.42.0
0.41.0
0.40.0
0.39.3
0.39.2
0.39.1
0.39.0
0.38.4
0.38.3
0.38.2
0.38.1
0.38.0
0.37.0
0.36.2
0.36.1
0.36.0
0.35.0
0.34.0
0.33.0
0.32.0
0.31.1
0.31.0
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0.29.0
0.28.2
0.28.1
0.28.0
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0.26.0
0.25.1
0.25.0
0.24.1
0.24.0
0.23.2
0.23.1
0.23.0
0.22.1
0.22.0
0.21.0
0.20.0
retired
0.19.0
0.18.1
0.18.0
0.17.0
0.16.0
0.15.0
0.14.4
0.14.2
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0.13.1
0.13.0
0.12.0
0.11.0
0.10.0
0.10.0-rc.0
retired
0.9.0
retired
0.8.0
0.7.0
0.6.0
0.5.0
0.4.0
0.3.0
0.2.0
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/image/blurhash/base83.ex
defmodule Image.Blurhash.Base83 do
@moduledoc false
alphabet =
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz#$%*+,-.:;=?@[]^_{|}~"
|> String.to_charlist()
for {encoded, value} <- Enum.with_index(alphabet) do
def encode_char(unquote(value)) do
unquote(encoded)
end
def decode_char(unquote(encoded)) do
unquote(value)
end
end
def decode_number(string, length, acc \\ 0)
def decode_number(rest, 0, acc) do
{:ok, acc, rest}
end
def decode_number(<<>>, _, _) do
{:error, :unexpected_end}
end
def decode_number(<<char, rest::binary>>, length, acc) do
decode_number(rest, length - 1, acc * 83 + decode_char(char))
end
def encode_number(_, 0), do: ""
def encode_number(number, length) do
divisor = floor(:math.pow(83, length - 1))
remainder = rem(number, divisor)
quotient = floor(number / divisor)
<<encode_char(quotient)>> <> encode_number(remainder, length - 1)
end
end