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#!/usr/bin/env python3
__version__ = "1.0"
from argparse import ArgumentParser
from PIL import Image
# firmware
CPC_PAL = (
[0, 0, 0],
[0, 0, 128],
[0, 0, 255],
[128, 0, 0],
[128, 0, 128],
[128, 0, 255],
[255, 0, 0],
[255, 0, 128],
[255, 0, 255],
[0, 128, 0],
[0, 128, 128],
[0, 128, 255],
[128, 128, 0],
[128, 128, 128],
[128, 128, 255],
[255, 128, 0],
[255, 128, 128],
[255, 128, 255],
[0, 255, 0],
[0, 255, 128],
[0, 255, 255],
[128, 255, 0],
[128, 255, 128],
[128, 255, 255],
[255, 255, 0],
[255, 255, 128],
[255, 255, 255],
)
SW_TO_HW = (
0x54,
0x44,
0x55,
0x5C,
0x58,
0x5D,
0x4C,
0x45,
0x4D,
0x56,
0x46,
0x57,
0x5E,
0x40,
0x5F,
0x4E,
0x47,
0x4F,
0x52,
0x42,
0x53,
0x5A,
0x59,
0x5B,
0x4A,
0x43,
0x4B,
)
def main():
parser = ArgumentParser(
description="PNG to CPC palette (firmware)",
epilog="Copyright (C) 2015-2023 Juan J Martinez <jjm@usebox.net>",
)
parser.add_argument(
"--version", action="version", version="%(prog)s " + __version__
)
parser.add_argument("--header", dest="header", action="store_true")
parser.add_argument("--hardware", dest="hardware", action="store_true")
parser.add_argument("image", help="image to convert")
parser.add_argument(
"pal_dump",
help="filename for the palette dump (variable if header flag is set)",
)
args = parser.parse_args()
try:
image = Image.open(args.image)
except IOError:
parser.error("failed to open the image")
if image.mode != "P":
parser.error("not an indexed image (no palette)")
palette = image.getpalette()
if not palette:
parser.error("failed to extract the palette (is this an indexed image?)")
rgb = []
for i in range(0, 16 * 3, 3):
c = palette[i : i + 3]
if c not in CPC_PAL:
parser.error("%r not in the CPC palette" % c)
rgb.append(c)
out = [CPC_PAL.index(c) for c in rgb]
if len(out) < 16:
out.extend([0 for _ in range(16 - len(out))])
if args.hardware:
out = [SW_TO_HW[c] for c in out[:]]
if args.header:
print("/* %s palette */" % ("hardware" if args.hardware else "firmware"))
print("#ifdef LOCAL")
print(
"const unsigned char %s[] = { %s };\n"
% (args.pal_dump, ", ".join([hex(c) for c in out]))
)
print("#else")
print("extern const unsigned char %s[];\n" % (args.pal_dump))
print("#endif")
else:
with open(args.pal_dump, "wb") as fd:
fd.write(bytearray(out))
if __name__ == "__main__":
main()
|
