1
0
Fork 0

Added palette support

This commit is contained in:
Casey 2024-09-13 03:33:52 +03:00
parent 712346e2c5
commit a3b079e638
Signed by: hkc
GPG Key ID: F0F6CFE11CDB0960
1 changed files with 71 additions and 3 deletions

View File

@ -1,11 +1,16 @@
#!/usr/bin/env python3
from typing import BinaryIO, TextIO
from PIL import Image
from PIL import Image, ImageColor
from argparse import ArgumentParser, RawTextHelpFormatter
from textwrap import dedent
from functools import lru_cache
try:
PALETTE_ADAPTIVE = Image.Palette.ADAPTIVE
except Exception:
PALETTE_ADAPTIVE = Image.ADAPTIVE
class Converter:
CC_COLORS = [
@ -46,11 +51,30 @@ class Converter:
17, 17, 17
]
DEFAULT_GRAYSCALE_PALETTE = [
0xf0, 0xf0, 0xf0,
0x9d, 0x9d, 0x9d,
0xbe, 0xbe, 0xbe,
0xbf, 0xbf, 0xbf,
0xb8, 0xb8, 0xb8,
0x76, 0x76, 0x76,
0xd0, 0xd0, 0xd0,
0x4c, 0x4c, 0x4c,
0x99, 0x99, 0x99,
0x87, 0x87, 0x87,
0xa9, 0xa9, 0xa9,
0x77, 0x77, 0x77,
0x65, 0x65, 0x65,
0x6e, 0x6e, 0x6e,
0x76, 0x76, 0x76,
0x11, 0x11, 0x11
]
PIX_BITS = [[1, 2], [4, 8], [16, 0]]
MAX_DIFF = 3 * 255
def __init__(self, image: Image.Image, palette: list[int] | int = Image.ADAPTIVE):
def __init__(self, image: Image.Image, palette: list[int] | int = PALETTE_ADAPTIVE):
if isinstance(palette, list):
img_pal = Image.new("P", (1, 1))
img_pal.putpalette(palette)
@ -246,6 +270,25 @@ def main():
-p fill Stretch to fill"""
),
)
parser.add_argument(
"-P",
dest="palette",
default="auto",
help=dedent(
"""\
Palette to be used for that conversion.
Should be 16 colors or less
Valid options are:
-P auto Determine palette automatically
-P default Use default CC:Tweaked color palette
-P defaultgray Use default CC:Tweaked grayscale palette
-P "list:#RRGGBB,#RRGGBB,..." Use a set list of colors
-P "cpi:path" Load palette from a CCPI file
-P "gpl:path" Parse GIMP palette file and use first 16 colors
-P "txt:path" Load palette from a list of hex values
"""
)
)
parser.add_argument("image_path")
parser.add_argument("output_path")
@ -320,9 +363,34 @@ def main():
else:
pass
palette = Image.Palette.ADAPTIVE
palette = PALETTE_ADAPTIVE
if args.cpi_version == -2:
args.palette = "default"
if args.palette == "auto":
palette = PALETTE_ADAPTIVE
elif args.palette == "default":
palette = Converter.DEFAULT_PALETTE
elif args.palette == "defaultgray":
palette = Converter.DEFAULT_GRAYSCALE_PALETTE
elif args.palette.startswith("txt:"):
with open(args.palette[4:], "r") as fp:
palette = []
for line in fp:
palette += ImageColor.getcolor(line.strip(), "RGB") # type: ignore
assert len(palette) <= 16 * 3
elif args.palette.startswith("list:"):
palette = []
for c in args.palette[5:].split(","):
palette += ImageColor.getcolor(c, "RGB") # type: ignore
assert len(palette) <= 16 * 3
elif args.palette.startswith("cpi:"):
raise ValueError("not implemented yet")
elif args.palette.startswith("gpl:"):
raise ValueError("not implemented yet")
else:
raise ValueError(f"invalid palette identifier: {args.palette!r}")
converter = Converter(canv, palette)
converter._img.save("/tmp/_ccpictmp.png")
if args.textmode: