1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
#!/usr/bin/env python3
#
# Copyright (C) 2018-2024 by Juan J. Martinez <jjm@usebox.net>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
__version__ = "1.0"
import sys
from argparse import ArgumentParser
from PIL import Image
from collections import defaultdict
DEF_W = 8
DEF_H = 8
# TOSHIBA palette
MSX_COLS = [
(255, 0, 255),
(0, 0, 0),
(102, 204, 102),
(136, 238, 136),
(68, 68, 221),
(119, 119, 255),
(187, 85, 85),
(119, 221, 221),
(221, 102, 102),
(255, 119, 119),
(204, 204, 85),
(238, 238, 136),
(85, 170, 85),
(187, 85, 187),
(204, 204, 204),
(238, 238, 238),
]
def main():
parser = ArgumentParser(
description="PNG to SCR file",
epilog="Copyright (C) 2018-2024 Juan J Martinez <jjm@usebox.net>",
)
parser.add_argument(
"--version", action="version", version="%(prog)s " + __version__
)
parser.add_argument("image", help="image to convert")
args = parser.parse_args()
try:
image = Image.open(args.image)
except IOError:
parser.error("failed to open the image")
if image.mode != "RGB":
parser.error("not a RGB image")
(w, h) = image.size
if w % 256 or h % 192:
parser.error("%s size is not 256x192" % args.image)
data = image.getdata()
color_idx = defaultdict(list)
color = []
out = []
ntiles = 0
for y in range(0, h, DEF_H):
for x in range(0, w, DEF_W):
# tile data
tile = [
data[x + i + ((y + j) * w)] for j in range(DEF_H) for i in range(DEF_W)
]
# get the attibutes of the tile
# FIXME: this may not be right
for i in range(0, len(tile), DEF_W):
cols = list(sorted(set(tile[i : i + DEF_W])))
if len(cols) > 2:
parser.error(
"tile %d (%d, %d) has more than two colors: %r"
% (ntiles, x, y, cols)
)
elif len(cols) == 1:
cols.append(MSX_COLS[1])
for c in cols:
if c not in MSX_COLS:
parser.error(
"tile %d (%d, %d) has a color not in the MSX palette: %r"
% (ntiles, x, y, c)
)
# each tile has two coloributes per row
color_idx[ntiles * DEF_H + i // DEF_W] = cols
color.append((MSX_COLS.index(cols[1]) << 4) | MSX_COLS.index(cols[0]))
frame = []
for i in range(0, len(tile), 8):
byte = 0
p = 7
for k in range(8):
# 0 or 1 is determined by the order in the coloributes for that row
byte |= (
color_idx[ntiles * DEF_H + i // DEF_W].index(tile[i + k]) << p
)
p -= 1
frame.append(byte)
ntiles += 1
out.extend(frame)
sys.stdout.buffer.write(bytes(out))
sys.stdout.buffer.write(bytes(color))
if __name__ == "__main__":
main()
|
