def readMetadataFile(datapath):
numberOfMetadata = 0
listOfMetadata = []
f = open(datapath, "rb")
done = False
while done == False:
allData = f.read(16)
if (allData.find(
b'\x00\x00\x06\x0e+4\x02\x0b\x01\x01\x0e\x01\x03\x01\x01') >
0):
allData = b'\x06\x0e+4\x02\x0b\x01\x01\x0e\x01\x03\x01\x01\x00\x00\x00'
length = f.read(4)
else:
length = f.read(1)
allData += length
length = bytes_to_int(length)
if length >= 128:
length -= 128
length *= 128
secondRead = f.read(1)
allData += secondRead
secondRead = bytes_to_int(secondRead)
if secondRead >= 128:
secondRead -= 128
length += secondRead
allData += f.read(length)
if allData == b"":
done = True
else:
listOfMetadata.append(allData)
numberOfMetadata += 1
f.close()
global metadataRead
metadataRead = True
return listOfMetadata, numberOfMetadata
def __next__(self):
key = self.__read(self.key_length)
# TODO : HOTFIX for some videos, make better
# in some videos the header not follow the correct pattern
# Sample key:
# b'\xdc\x00\x00\x06\x0e+4\x02\x0b\x01\x01\x0e\x01\x03\x01\x01'
if key.find(KlvHeaderKey) > 0:
key = UASLocalMetadataSet
byte_length = bytes_to_int(self.__read(4))
else:
byte_length = bytes_to_int(self.__read(1))
if byte_length < 128:
# BER Short Form
length = byte_length
else:
# BER Long Form
length = bytes_to_int(self.__read(byte_length - 128))
# try:
# value = self.__read(length)
# except OverflowError:
# value = self.__read(0)
value = self.__read(length)
return key, value
def __next__(self):
key = self.__read(self.key_length)
byte_length = bytes_to_int(self.__read(1))
if byte_length < 128:
# BER Short Form
length = byte_length
else:
# BER Long Form
length = bytes_to_int(self.__read(byte_length - 128))
value = self.__read(length)
return key, value
def __next__(self):
key = self.__read(self.key_length)
# TODO : HOTFIX for some videos, make better
# in some videos the header not follow the correct pattern
# Sample key: b'\xdc\x00\x00\x06\x0e+4\x02\x0b\x01\x01\x0e\x01\x03\x01\x01'
if (key.find(b'\x00\x00\x06\x0e+4\x02\x0b\x01\x01\x0e\x01\x03\x01\x01')
> 0):
key = b'\x06\x0e+4\x02\x0b\x01\x01\x0e\x01\x03\x01\x01\x00\x00\x00'
byte_length = bytes_to_int(self.__read(4))
else:
byte_length = bytes_to_int(self.__read(1))
if byte_length < 128:
# BER Short Form
length = byte_length
else:
# BER Long Form
length = bytes_to_int(self.__read(byte_length - 128))
value = self.__read(length)
return key, value
def __init__(self, value):
try:
self.value = bytes_to_int(value)
except TypeError:
self.value = value