# GynvaelEN mission 005

# curl -v http://gynvael.vexillium.org/ext/thepicture/picture.image
Content-Encoding: rle
Content-Type: image/raw; w=640,h=212,bpp=8
# cat mission_05.py
from struct import unpack
from PIL import Image

with open('picture.image') as f:
 cdata = f.read()

ddata = []

for i in range(0, len(cdata), 2):
 v = unpack('B', cdata[i + 1])[0] ^ 1
 for _ in range(unpack('B', cdata[i])[0]):
  ddata.append(v * 255)

image = Image.new('L', (640, 212))
image.putdata(ddata)
image.save('output.png')
# python mission_05.py

Source

https://www.youtube.com/watch?v=W7s5CWaw6I4 (1:20:57)

Reference

https://en.wikipedia.org/wiki/Run-length_encoding