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authorJuan J. Martinez <jjm@usebox.net>2020-12-30 19:07:31 +0000
committerJuan J. Martinez <jjm@usebox.net>2020-12-30 19:23:41 +0000
commit2682bc5d1d864341aaeb42a449db73c3ecd16d70 (patch)
tree9116764364b4ee0ce7f6037305077807b57776de /tools/png2tiles.py
downloadubox-msx-lib-2682bc5d1d864341aaeb42a449db73c3ecd16d70.tar.gz
ubox-msx-lib-2682bc5d1d864341aaeb42a449db73c3ecd16d70.zip
Initial import1.0
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diff --git a/tools/png2tiles.py b/tools/png2tiles.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2019 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.
+#
+
+from argparse import ArgumentParser
+from PIL import Image
+from collections import defaultdict
+
+__version__ = "1.0"
+
+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 to_hex_list_str(src):
+ out = ""
+ for i in range(0, len(src), 8):
+ out += ', '.join(["0x%02x" % b for b in src[i:i + 8]]) + ",\n"
+ return out
+
+
+def to_hex_list_str_asm(src):
+ out = ""
+ for i in range(0, len(src), 8):
+ out += '\tdb ' + ', '.join(["#%02x" % b for b in src[i:i + 8]])
+ out += '\n'
+ return out
+
+
+def main():
+
+ parser = ArgumentParser(description="PNG to MSX tiles",
+ epilog="Copyright (C) 2019 Juan J Martinez <jjm@usebox.net>",
+ )
+
+ parser.add_argument(
+ "--version", action="version", version="%(prog)s " + __version__)
+ parser.add_argument("-i", "--id", dest="id", default="tileset", type=str,
+ help="variable name (default: tileset)")
+ parser.add_argument("-a", "--asm", dest="asm", action="store_true",
+ help="ASM output (default: C header)")
+ parser.add_argument("--no-colors", dest="no_colors", action="store_true",
+ help="don't include colors")
+
+ 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 % DEF_W or h % DEF_H:
+ parser.error("%s size is not multiple of tile size (%s, %s)" %
+ (args.image, DEF_W, DEF_H))
+
+ 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(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"
+ " expected MSX palette: %r" % (ntiles, x, y, c))
+
+ # each tile has two color attributes 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 color attributes
+ # 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)
+
+ if ntiles > 256:
+ parser.error("more than 256 tiles")
+
+ if args.asm:
+ print(";; %d tiles\n" % ntiles)
+ print("%s:" % args.id)
+ print(to_hex_list_str_asm(out))
+
+ if not args.no_colors:
+ print("%s_col:" % args.id)
+ print(to_hex_list_str_asm(color))
+ else:
+ print("#ifndef _%s_H" % args.id.upper())
+ print("#define _%s_H\n" % args.id.upper())
+ print("/* %d tiles */\n" % ntiles)
+
+ data_out = to_hex_list_str(out)
+ print("#ifdef LOCAL")
+ print("const unsigned char %s[%d] = {\n%s\n};\n" %
+ (args.id, len(out), data_out))
+
+ if not args.no_colors:
+ color_out = to_hex_list_str(color)
+ print("const unsigned char %s_colors[%d] = {\n%s\n};\n" % (
+ args.id, len(color), color_out))
+
+ print("#else\n")
+ print("extern const unsigned char %s[%d];" % (args.id, len(out)))
+
+ if not args.no_colors:
+ print("extern const unsigned char %s_colors[%d];" % (
+ args.id, len(color)))
+
+ print("#endif // LOCAL\n")
+ print("#endif // _%s_H\n" % args.id.upper())
+
+
+if __name__ == "__main__":
+ main()