def load_unit(self, f):
if self._data_unit_type == StatementBody.ID:
return StatementBody(f, self)
elif self._data_unit_type == DRCS1ByteCharacter.ID:
# DRCS character data unit
return DRCS1ByteCharacter(f, self)
else:
read.buffer(f, self._data_unit_size)
def __init__(self, f):
if DEBUG:
print("__DATA_GROUP_START__")
self._stuffing_byte = read.ucb(f)
if DEBUG:
print hex(self._stuffing_byte)
if(self._stuffing_byte is not 0x80):
raise DataGroupParseError("Initial stuffing byte not equal to 0x80: " + hex(self._stuffing_byte))
self._data_identifier = read.ucb(f)
if DEBUG:
print hex(self._data_identifier)
if self._data_identifier is not 0xff:
raise DataGroupParseError("Initial data identifier is not equal to 0xff" + hex(self._data_identifier))
self._private_stream_id = read.ucb(f)
if DEBUG:
print hex(self._private_stream_id)
if self._private_stream_id is not 0xf0:
raise DataGroupParseError("Private stream id not equal to 0xf0: " + hex(self._private_stream_id))
self._group_id = read.ucb(f)
if DEBUG:
print 'group id ' + str((self._group_id >> 2)&(~0x20))
self._group_link_number = read.ucb(f)
if DEBUG:
print str(self._group_link_number)
self._last_group_link_number = read.ucb(f)
if DEBUG:
print str(self._last_group_link_number)
if self._group_link_number != self._last_group_link_number:
print("This is data group packet " + str(self._group_link_number) + " of " + str(self._last_group_link_number))
self._data_group_size = read.usb(f)
if DEBUG:
print 'data group size found is ' + str(self._data_group_size)
if not self.is_management_data():
self._payload = CaptionStatementData(f)
else:
#self._payload = f.read(self._data_group_size)
self._payload = read.buffer(f, self._data_group_size)
self._crc = read.usb(f)
if DEBUG:
print 'crc value is ' + str(self._crc)
def __init__(self, f):
self._stuffing_byte = read.ucb(f)
if DEBUG:
print str(self._stuffing_byte)
if(self._stuffing_byte is not 0x80):
raise ValueError
self._data_identifier = read.ucb(f)
if DEBUG:
print str(self._data_identifier)
if self._data_identifier is not 0xff:
raise ValueError
self._private_stream_id = read.ucb(f)
if DEBUG:
print str(self._private_stream_id)
if self._private_stream_id is not 0xf0:
raise ValueError
self._group_id = read.ucb(f)
if DEBUG:
print 'group id ' + str((self._group_id >> 2)&(~0x20))
self._group_link_number = read.ucb(f)
if DEBUG:
print str(self._group_link_number)
self._last_group_link_number = read.ucb(f)
if DEBUG:
print str(self._last_group_link_number)
self._data_group_size = read.usb(f)
if DEBUG:
print 'data group size found is ' + str(self._data_group_size)
if not self.is_management_data():
self._payload = CaptionStatementData(f)
else:
#self._payload = f.read(self._data_group_size)
self._payload = read.buffer(f, self._data_group_size)
self._crc = read.usb(f)
if DEBUG:
print 'crc value is ' + str(self._crc)
def __init__(self, f):
self._stuffing_byte = read.ucb(f)
if DEBUG:
print str(self._stuffing_byte)
if (self._stuffing_byte is not 0x80):
raise ValueError
self._data_identifier = read.ucb(f)
if DEBUG:
print str(self._data_identifier)
if self._data_identifier is not 0xff:
raise ValueError
self._private_stream_id = read.ucb(f)
if DEBUG:
print str(self._private_stream_id)
if self._private_stream_id is not 0xf0:
raise ValueError
self._group_id = read.ucb(f)
if DEBUG:
print 'group id ' + str((self._group_id >> 2) & (~0x20))
self._group_link_number = read.ucb(f)
if DEBUG:
print str(self._group_link_number)
self._last_group_link_number = read.ucb(f)
if DEBUG:
print str(self._last_group_link_number)
self._data_group_size = read.usb(f)
if DEBUG:
print 'data group size found is ' + str(self._data_group_size)
if not self.is_management_data():
self._payload = CaptionStatementData(f)
else:
#self._payload = f.read(self._data_group_size)
self._payload = read.buffer(f, self._data_group_size)
self._crc = read.usb(f)
if DEBUG:
print 'crc value is ' + str(self._crc)
def load_unit(self, f):
if self._data_unit_type == StatementBody.ID:
return StatementBody(f, self)
else:
read.buffer(f, self._data_unit_size)
def load_unit(self, f):
if self._data_unit_type == StatementBody.ID:
return StatementBody(f, self)
else:
read.buffer(f, self._data_unit_size)
