Digole OLED monochrome video codec (accepts animated GIF or static images)

codec.py

#encoding: utf-8
import sys
import time
import PIL.Image

def marshal_image(image):
    data = image.convert('1')
    w, h = data.size

    out = bytearray()
    for y in range(h):
        buf = 0
        buf_len = 0
        for x in range(w):
            pixel = 1 if data.getpixel((x, y)) > 0 else 0
            buf |= pixel << (7 - buf_len)
            buf_len += 1
            if buf_len == 8:
                out += bytearray([buf])
                buf = 0
                buf_len = 0
    return out

def get_images():
    gif = PIL.Image.open(sys.argv[1])

    yield marshal_image(gif)
    try:
        while 1:
            gif.seek(gif.tell() + 1)
            yield marshal_image(gif)
    except EOFError:
        pass


with open(sys.argv[2], 'wb') as f:
    for noframe, imdata in enumerate(get_images()):
        f.write(imdata)