def DataTransforms(ch0, ch1):
    dataTemp = (ord(ch0)<<8) + ord(ch1)
    data = (0x800*2) - dataTemp
    if(data < 0):
        data = (1<<16) + data
    return data


buffer, addr = self.sock.recvfrom(65000)
for i in range(len(data/2)):
	data = DataTransforms(buffer[i], buffer[i+1]