'''
Converter of gameboy camera images to PNGs. Probably awful.
Gameboy camera images are saved in the format of the mofosyne printer emulator.
'''
#!/usr/bin/env/python
import json
import twobpp
from PIL import Image

def chunks(l, n):
    """Yield successive n-sized chunks from l."""
    for i in range(0, len(l), n):
        yield l[i:i + n]

TILES_PER_LINE = 20
HEIGHT = 144
WIDTH = 160


colors = [(0xff, 0xff, 0xff), (0xaa, 0xaa, 0xaa), (0x55,0x55,0x55), (0x00,0x00,0x00)]

l = f.readlines()

d = []
for line in l:
    if line.startswith("#"):
        pass
    elif line.startswith("!"):
        pass
    else:
        d.append(line)

b = [bytes.fromhex(h.strip()) for h in d]
tiles = [twobpp.decode_tile(l) for l in b]

tile_image = []
for t in chunks(tiles, TILES_PER_LINE):
    chunk = []
    for l in range(8):
        line = []
        for tile in range(TILES_PER_LINE):
            line += t[tile][l]
        chunk += line
    tile_image += chunk

image_data = [colors[x] for x in tile_image]

image = Image.new(mode='RGB',size=(WIDTH,HEIGHT))
image.putdata(image_data)