('YCBCRCOEFFICIENTS', 529),
('YCBCRPOSITIONING', 531),
('YCBCRSUBSAMPLING', 530),
('YCLIPPATHUNITS', 345),
('YPOSITION', 287),
('YRESOLUTION', 283),
('ZIPQUALITY', 65557),
]
TAGS = dict([(i[1], i[0]) for i in tags_types] + tags_types)
for i,j in TAGS.iteritems():
TAGS[j] = i
_file = open(sys.argv[1], "rb")
s = struc.struc(_file)
#TODO
# * extract information from valoff
# * go to next directory
import struct
def ReadEndianness(v):
global _C
Little = {"II":True, "MM":False}[struct.pack("H", v)]
_C = {True:"<", False:">"}[Little]
def Check42(v):
if v != 42:
print v
with open("dec.bin", "wb") as fw:
fw.write(decfile)
return d
SIGS = {"FWS":None,"CWS": cws}
with open(sys.argv[1], "rb") as f:
d = struc.data(f.read())
sig = d.read(3)
if sig not in SIGS:
raise(BaseException("Wrong Signature"))
version = d.read(1)
if version not in (chr(i) for i in xrange(10)):
raise(BaseException("Wrong Version"))
do = SIGS[sig]
if do is not None:
d = do(d, version)
s = struc.struc(d)
# weird, must be wrong
s.handles([
["<I,SizeTag", None],
["<I,FrameSize", None],
["<H,FrameRate", None],
["<I,FrameCount", None],
])
# tiny png parser
# Ange Albertini, BSD Licence, 2011
import struc
import sys
_file = open(sys.argv[1], "rb")
s = struc.struc(_file)
############################################
# PNG
import binascii
import struct
# todo: add support for ascii buffer....
s.handle(["8B,header", None])
#sig = _file.read(8)
#if sig != "\x89PNG\x0d\x0a\x1a\x0a":
# raise(BaseException("Wrong Header"))
while (True): #EOF() ?
# should be printed only once the structure is confirmed correct
# print "%04X: %s%s:" % (_file.tell(), " " * _level, "Chunk") # should be handled at class level
s.levelup()
try:
size = s.handle([">I,Size", None])
except struct.error:
break
fw.write(decfile)
return d
SIGS = {"FWS": None, "CWS": cws}
with open(sys.argv[1], "rb") as f:
d = struc.data(f.read())
sig = d.read(3)
if sig not in SIGS:
raise (BaseException("Wrong Signature"))
version = d.read(1)
if version not in (chr(i) for i in xrange(10)):
raise (BaseException("Wrong Version"))
do = SIGS[sig]
if do is not None:
d = do(d, version)
s = struc.struc(d)
# weird, must be wrong
s.handles([
["<I,SizeTag", None],
["<I,FrameSize", None],
["<H,FrameRate", None],
["<I,FrameCount", None],
])
