mirror of https://github.com/pret/pokecrystal.git
39 lines
893 B
Python
Executable File
39 lines
893 B
Python
Executable File
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
Usage: python rgb555.py image.png
|
|
|
|
Round all colors of the input image to RGB555.
|
|
"""
|
|
|
|
import sys
|
|
|
|
import png
|
|
|
|
def rgb8_to_rgb5(c):
|
|
return (c & 0b11111000) | (c >> 5)
|
|
|
|
def round_pal(filename):
|
|
with open(filename, 'rb') as file:
|
|
width, height, rows = png.Reader(file).asRGBA8()[:3]
|
|
rows = list(rows)
|
|
for row in rows:
|
|
del row[3::4]
|
|
rows = [[rgb8_to_rgb5(c) for c in row] for row in rows]
|
|
writer = png.Writer(width, height, greyscale=False, bitdepth=8, compression=9)
|
|
with open(filename, 'wb') as file:
|
|
writer.write(file, rows)
|
|
|
|
def main():
|
|
if len(sys.argv) < 2:
|
|
print(f'Usage: {sys.argv[0]} pic.png', file=sys.stderr)
|
|
sys.exit(1)
|
|
for filename in sys.argv[1:]:
|
|
if not filename.lower().endswith('.png'):
|
|
print(f'{filename} is not a .png file!', file=sys.stderr)
|
|
round_pal(filename)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|