59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
#!/usr/bin/python
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from PIL import Image
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import sys
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import os
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import struct
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from getopt import gnu_getopt
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"""Convert image to raw binary using Python Imaging Library."""
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def split_seq(seq, splitsize):
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newseq = []
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while seq:
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newseq.append(seq[:splitsize])
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seq = seq[splitsize:]
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return newseq
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def write_block(f, image, width=8, height=8, offset_x=0, offset_y=0):
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for y in range(height):
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for x in range(width):
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val = image.getpixel((x+offset_x, y+offset_y))
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f.write(chr(val))
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def main():
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tiled, args = gnu_getopt(sys.argv[1:], "t")
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if len(args) < 2:
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print "Usage: %s [-t] <source> <target> [palette]" % os.path.split(sys.argv[0])[1]
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print " -t - Convert data in 8x8 pixel tiles in 1D layout."
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sys.exit()
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im = Image.open(args[0])
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output = open(args[1], "wb")
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width, height = im.size
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print "Converting %dx%d image to binary." % (width, height)
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if not tiled:
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write_block(output, im, width, height)
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else:
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print "Doing 1D tile conversion."
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if (width % 8) or (height % 8):
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print "Can't tile image where width or height is not multiple of 8."
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exit(-1)
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else:
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for offset_y in map(lambda n : 8*n, range(height / 8)):
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for offset_x in map(lambda n : 8*n, range(width / 8)):
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write_block(output, im, offset_x=offset_x, offset_y=offset_y)
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if len(args) > 2:
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pal_output = open(args[2], "wb")
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print "Converting %d color palette." % (len(im.palette.palette) / 3)
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for color in split_seq(im.palette.palette, 3):
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r, g, b = map(lambda col : col >> 3, map(ord, color))
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value = (b << 10) + (g << 5) + r
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pal_output.write(struct.pack("<h", value))
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if __name__=="__main__":
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main()
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