画像をRGB565へ変換. 最初の2byte:幅, 次の2byte:高さ, それ移行:1ピクセルごとのRGB565値

MEMEs_Image_Converter.py

from PIL import Image
from argparse import ArgumentParser
import struct

usage = 'Usage: python {} FILE [--output <file>]'\
				.format(__file__)
argparser = ArgumentParser(usage=usage)
argparser.add_argument('fname', type=str, help='echo fname')
argparser.add_argument('-o', '--output', type=str, dest='output_file', help='Place the output into <file>')

args = argparser.parse_args()

im = Image.open(args.fname, "r")
if args.output_file:
	f = open(args.output_file, 'wb')
else:
	f = open('temp.tft', 'wb')

rgb_im = im.convert('RGB')
size = rgb_im.size

f.write(struct.pack("BB", size[0] >> 8, size[0] & 0x00FF))
f.write(struct.pack("BB", size[1] >> 8, size[1] & 0x00FF))

for y in range(size[1]):
	for x in range(size[0]):
		r,g,b = rgb_im.getpixel((x,y))

		r_tmp = r >> 3
		g_tmp = g >> 2
		b_tmp = b >> 3

		rgb565 = (r_tmp << 11) | (g_tmp << 5) | b_tmp

		f.write(struct.pack("BB", rgb565 >> 8, rgb565 & 0x00FF))