mirror of
https://github.com/Next-Flip/Momentum-Firmware.git
synced 2025-10-10 23:22:35 +02:00
83 lines
2.0 KiB
Python
83 lines
2.0 KiB
Python
import heatshrink2
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import argparse
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import os
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def padded_hex(i, l):
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given_int = i
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given_len = l
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hex_result = hex(given_int)[2:] # remove '0x' from beginning of str
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num_hex_chars = len(hex_result)
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extra_zeros = "0" * (given_len - num_hex_chars) # may not get used..
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return (
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"0x" + hex_result
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if num_hex_chars == given_len
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else "?" * given_len
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if num_hex_chars > given_len
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else "0x" + extra_zeros + hex_result
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if num_hex_chars < given_len
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else None
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)
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parser = argparse.ArgumentParser(
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description="Turn cooked Flipper .bm files back into .xbm"
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)
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parser.add_argument("infile", metavar="i", help="Input file")
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parser.add_argument("outfile", metavar="o", help="File to write to")
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parser.add_argument(
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"Width",
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metavar="W",
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type=int,
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nargs="?",
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default="128",
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help="Width of the image. Find from meta.txt or directory name",
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)
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parser.add_argument(
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"Height",
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metavar="H",
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type=int,
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nargs="?",
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default="64",
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help="Height of the image. Find from meta.txt or directory name",
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)
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args = vars(parser.parse_args())
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with open(args["infile"], "rb") as f:
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fileStream = f.read()
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filename = os.path.splitext(os.path.basename(args["outfile"]))[0]
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imageWidth = args["Width"]
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imageHeight = args["Height"]
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# remove headers and padding
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if fileStream[0:2] == bytes([0x01, 0x00]):
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unpad = fileStream[4:]
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else:
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if fileStream[0:1] == bytes([0x00]):
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unpad = fileStream[2:]
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# lzss decompress
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data_decoded_str = heatshrink2.decompress(unpad, window_sz2=8, lookahead_sz2=4)
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# turn it back into xbm
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b = list(data_decoded_str)
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c = ", ".join(padded_hex(my_int, 2) for my_int in b)
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width_out = "#define " + filename + "_width " + str(imageWidth) + "\n"
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height_out = "#define " + filename + "_height " + str(imageHeight) + "\n"
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bytes_out = "static unsigned char " + filename + "_bits[] = {" + str(c) + "};"
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data = width_out + height_out + bytes_out
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with open(args["outfile"], "w") as f:
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f.write(data)
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