lodextract/lodextract.py
2014-03-15 15:31:40 +01:00

106 lines
3.6 KiB
Python

#!/usr/bin/env python
import zlib
import struct
import os
from PIL import Image, ImageDraw
from common import crc24_func, get_complement, font
def is_pcx(data):
size,width,height = struct.unpack("<III",data[:12])
return size == width*height or size == width*height*3
def read_pcx(data):
size,width,height = struct.unpack("<III",data[:12])
if size == width*height:
im = Image.fromstring('P', (width,height),data[12:12+width*height])
palette = []
for i in range(256):
offset=12+width*height+i*3
r,g,b = struct.unpack("<BBB",data[offset:offset+3])
palette.extend((r,g,b))
im.putpalette(palette)
return im
elif size == width*height*3:
return Image.fromstring('RGB', (width,height),data[12:])
else:
return None
def unpack_lod(infile,outdir,shred=True):
f = open(infile)
header = f.read(4)
if header != 'LOD\0':
print "not LOD file: %s"%header
return False
f.seek(8)
total, = struct.unpack("<I", f.read(4))
f.seek(92)
files=[]
for i in range(total):
filename, = struct.unpack("16s", f.read(16))
filename = filename[:filename.index('\0')].lower()
offset,size,_,csize = struct.unpack("<IIII", f.read(16))
files.append((filename,offset,size,csize))
for filename,offset,size,csize in files:
filename=os.path.join(outdir,filename)
print filename
f.seek(offset)
if csize != 0:
data = zlib.decompress(f.read(csize))
else:
data = f.read(size)
if is_pcx(data):
im = read_pcx(data)
if im:
if shred:
crc = crc24_func(filename)
r = crc>>16
g = (crc&0xff00)>>8
b = crc&0xff
w,h = im.size
pixels = im.load()
for i in range(w):
for j in range(h):
if pixels[i,j] > 7:
if im.mode == 'P':
pixels[i,j] = 8+crc%248
else:
pixels[i,j] = (r,g,b)
im.resize((w*3,h*3))
draw = ImageDraw.Draw(im)
tw,th = draw.textsize(os.path.basename(filename),font=font)
tpos = ((w*3-tw)/2,(h*3-th)/2)
if im.mode == 'P':
# we can't really have a complement in palette mode, so just get some color
draw.text(tpos,os.path.basename(filename),255,font=font)
else:
draw.text(tpos,os.path.basename(filename),get_complement(r,g,b),font=font)
im = im.resize((w,h),Image.ANTIALIAS)
im.save(filename, "PNG")
else:
return False
else:
o = open(filename,"w+")
o.write(data)
o.close()
return True
if __name__ == '__main__':
import sys
if len(sys.argv) != 3:
print "usage: %s infile.lod ./outdir"%sys.argv[0]
print ""
print "usually after installing the normal way:"
print " %s .vcmi/Data/H3bitmap.lod .vcmi/Mods/vcmi/Data/"%sys.argv[0]
print " rm .vcmi/Data/H3bitmap.lod"
print " %s .vcmi/Data/H3sprite.lod .vcmi/Mods/vcmi/Data/"%sys.argv[0]
print " rm .vcmi/Data/H3sprite.lod"
exit(1)
ret = unpack_lod(sys.argv[1], sys.argv[2])
exit(0 if ret else 1)