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emilybrooks
5fb92a5079
* set up extension * extension works * make file stuff * everything works! * renamed script
35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
import argparse
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import subprocess
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import png
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import struct
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parser=argparse.ArgumentParser(description="Converts extracted texture png files to the swapped data that Animal Forest expects.")
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parser.add_argument("input")
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parser.add_argument("output")
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args=parser.parse_args()
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reader = png.Reader(filename=args.input)
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width, height, rows, info = reader.read()
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rowIndex: int = 0
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outputData: bytearray = bytearray()
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for row in rows:
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if rowIndex % 2 == 0:
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# odd row, just copy as is
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outputData.extend(row)
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else:
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# even row, swap groups of 8 pixels, or 64 bits
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for swapBlock in struct.iter_unpack(">QQ", row):
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outputData.extend(struct.pack(">QQ", swapBlock[1], swapBlock[0]))
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rowIndex += 1
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newPngPath = args.output[:-14] + "_swapped.png"
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output = open(newPngPath, 'wb')
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writer = png.Writer(width, height, **info)
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writer.write_array(output, outputData)
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output.close()
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# use pigment64 to convert it to .inc.c
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subprocess.run(["tools/pigment64/pigment64", "to-bin", "-f", "ci4", "--c-array", "-o", args.output, newPngPath])
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