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mvl_steam_CHN.py
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#!/usr/bin/env python3
from PIL import Image
import zlib
import struct, os
class Mvl:
"""
mvl format :
------------
head
------------0x60
pictures
------------
blocks
x,y,z,u,v
------------
block_indexs of picturess
"""
def __init__(self,data):
if data.startswith(b"\x78\x9c"):
data = zlib.decompress(data)
self.data = data
assert self.data[0:4] == b"MVL1","Magic ERROR: {}".format(self.data[0:4])
self.n, = struct.unpack("<I",self.data[4:8])
assert self.data[0x20:0x2a] == b"XFYF0FUFVF","unknown type {}".format(self.data[0x20:0x2a])
self.get_pictures()
def get_pictures(self):
self.pic = []
for i in range(self.n) :
data = self.data[0x60+i*0x40:0xa0+i*0x40]
assert data[0x8:0x10]==b'\x04\x01\x00\x01\x00\x00\x00\x00',data[0x8:0x10]
# about picture data
l_o,p_o = struct.unpack("<2I",data[0x10:0x18])
# in mvl file
l,p = struct.unpack("<2I",data[0x18:0x20])
assert i <1 or p - self.pic[-1]["length"]*2 == self.pic[-1]["index"]
s = cstr(data[0x20:])
tmp = {"name": s,
"block_len": l_o,
"first_block": p_o,
"index": p,
"length": l}
self.pic.append(tmp)
self.get_blocks()
def get_blocks(self):
for i in range(self.n):
tmp = self.pic[i]
bi = tmp["first_block"]
bl = tmp["block_len"]
blocks = []
block_data = self.data[bi:bi+5*4*bl]
data = self.data[tmp["index"]:tmp["index"]+tmp["length"]*5*4]
for j in range(0,tmp["length"]*2,2):
k = struct.unpack("H",data[j:j+2])[0]
assert k<= bl,"out blocks %d"%j
block = block_data[k*20:k*20+20]
#points and UV
x,y,z,u,v = struct.unpack("<5f",block)
assert z==0,"z!=0"
blocks.append((f2int(x),f2int(y),f2int(z),u,v))
self.pic[i]["block"] = blocks
def combine(self,pic):
w,h = pic.size
block = self.pic[0]["block"]
dx = abs(block[0][0] - block[1][0])
dy = abs(block[0][1] - block[2][1])
dw = abs(block[0][3] - block[1][3])*w
dh = abs(block[0][4] - block[2][4])*h
rx,ry = dx/dw,dy/dh
pic_i = 0
ret = {}
for i in self.pic:
if i["length"] <=0 :
continue
img = Image.new(size = (6000,10000),mode= "RGBA",color="#00000000")
name = i["name"]
point = i["block"][0]
x,y = (point[0]/rx+2000,point[1]/ry+1000)
min_x,max_x,min_y,max_y = (x,y,x,y)
#step ever two triangles
for j in range(0,len(i["block"]),6):
point = i["block"][j]
# resize to orignal
x,y = (point[0]/rx+2000,point[1]/ry+1000)
cp = pic.crop((point[3]*w,point[4]*h,point[3]*w+dw,point[4]*h+dh)).convert("RGBA")
img.paste(cp,(f2int(x),f2int(y)),mask = cp)
min_x = min(x,min_x)
max_x = max(x,max_x)
min_y = min(y,min_y)
max_y = max(y,max_y)
max_x += dw
max_y += dh
ret[name] = {"min_x": f2int((min_x-1000)*rx),
"min_y": f2int((min_y-1000)*ry),
"max_x": f2int((max_x-1000)*rx),
"max_y": f2int((max_y-1000)*ry),
"image": img.crop((min_x,min_y,max_x,max_y))}
return ret
def f2int(x):
if abs(int(x)-x) > 0.5:
return int(x+0.5)
return int(x)
def find_filename(filename):
if filename.find(".") == -1:
strlen = len(filename)
if parseint(filename)%2 == 0:#input pic
filenamemvl = inttostrfill(parseint(filename)+1,strlen)
if not os.path.exists(filenamemvl):
print("Error input pic and mvl-file without extension not found")
os._exit(0)
else:
return (filenamemvl,filename)
else:#input mvl
filenamepic = inttostrfill(parseint(filename)-1,strlen)
namewe = filenamepic+".webp"
namepn = filenamepic+".wav"
if os.path.exists(namewe):
return (filename,namewe)
elif os.path.exists(namepn):
os.rename(namepn,namepn[:-4]+".webp")
return (filename,namewe)
else:
print("Error input mvl and picture not found")
os._exit(0)
elif filename.endswith(".wav"):
strlen = len(filename[:-4])
filenamemvl = inttostrfill(parseint(filename[:-4])+1,strlen)
os.rename(filename,filename[:-4]+".webp")
return (filenamemvl,filename[:-4]+".webp")
elif filename.endswith(".webp"):
strlen = len(filename[:-5])
filenamemvl = inttostrfill(parseint(filename[:-5])+1,strlen)
return (filenamemvl,filename)
print("Error unknown input format")
os._exit(0)
def cstr(s):
p = "{}s".format(len(s))
s = struct.unpack(p,s)[0]
return str(s.replace(b"\x00",b"").replace(b"\xFE",b""),encoding = "sjis")
def parseint(string):
return int(''.join([x for x in string if x.isdigit()]))
def inttostrfill(inint, leng):
string = str(inint)
while(len(string) < leng):
string = "0" + string
return string
def process_data(mvl_data,pic):
mvl = Mvl(mvl_data)
return mvl.combine(pic)
def main():
import argparse
parser = argparse.ArgumentParser("python3 mvl.py")
parser.add_argument("filename")
args = parser.parse_args()
mvl,pic = find_filename(args.filename)
dir = pic[:-5]
with open(mvl,"rb") as f:
mvl_data = f.read()
pic = Image.open(pic)
if not os.path.exists(dir) :
os.mkdir(dir)
data = process_data(mvl_data,pic)
for i in data:
data[i]["image"].save(dir+"/"+i+".png")
for i in data:
del data[i]["image"]
import json
with open(dir+"/index.json","w") as f:
json.dump(data, f)
if __name__ == "__main__":
main()