def strip_ampdu(self, idx):
        """strip(8 byte) radiotap.ampdu
        :idx: int
        :return: int
            idx
        :return: collections.namedtuple
        """
        ampdu = collections.namedtuple(
            'ampdu', ['reference', 'crc_val', 'reservered', 'flags'])
        flags = collections.namedtuple(
            'flags', ['report_zerolen', 'is_zerolen', 'lastknown', 'last',
                      'delim_crc_error'])

        idx = Radiotap.align(idx, 4)
        refnum, flag_vals, crc_val, reserved = struct.unpack_from('<LHBB', self._rtap, idx)
        ampdu.flags = flags
        ampdu.reference = refnum
        ampdu.crc_val = crc_val
        ampdu.reserved = reserved

        bits = format(flag_vals, '032b')[::-1]
        ampdu.flags.report_zerolen = int(bits[0])
        ampdu.flags.is_zerolen = int(bits[1])
        ampdu.flags.lastknown = int(bits[2])
        ampdu.flags.last = int(bits[3])
        ampdu.flags.delim_crc_error = int(bits[4])
        return idx + 8, ampdu
def strip_ampdu(self, idx):
        """strip(8 byte) radiotap.ampdu
        :idx: int
        :return: int
            idx
        :return: collections.namedtuple
        """
        ampdu = collections.namedtuple(
            'ampdu', ['reference', 'crc_val', 'reservered', 'flags'])
        flags = collections.namedtuple(
            'flags', ['report_zerolen', 'is_zerolen', 'lastknown', 'last',
                      'delim_crc_error'])

        idx = Radiotap.align(idx, 4)
        refnum, flag_vals, crc_val, reserved = struct.unpack_from('<LHBB', self._rtap, idx)
        ampdu.flags = flags
        ampdu.reference = refnum
        ampdu.crc_val = crc_val
        ampdu.reserved = reserved

        bits = format(flag_vals, '032b')[::-1]
        ampdu.flags.report_zerolen = int(bits[0])
        ampdu.flags.is_zerolen = int(bits[1])
        ampdu.flags.lastknown = int(bits[2])
        ampdu.flags.last = int(bits[3])
        ampdu.flags.delim_crc_error = int(bits[4])
        return idx + 8, ampdu
def strip_ampdu ( self , idx ) : ampdu = collections . namedtuple ( 'ampdu' , [ 'reference' , 'crc_val' , 'reservered' , 'flags' ] ) flags = collections . namedtuple ( 'flags' , [ 'report_zerolen' , 'is_zerolen' , 'lastknown' , 'last' , 'delim_crc_error' ] ) idx = Radiotap . align ( idx , 4 ) refnum , flag_vals , crc_val , reserved = struct . unpack_from ( '<LHBB' , self . _rtap , idx ) ampdu . flags = flags ampdu . reference = refnum ampdu . crc_val = crc_val ampdu . reserved = reserved bits = format ( flag_vals , '032b' ) [ : : - 1 ] ampdu . flags . report_zerolen = int ( bits [ 0 ] ) ampdu . flags . is_zerolen = int ( bits [ 1 ] ) ampdu . flags . lastknown = int ( bits [ 2 ] ) ampdu . flags . last = int ( bits [ 3 ] ) ampdu . flags . delim_crc_error = int ( bits [ 4 ] ) return idx + 8 , ampdu
strip(8 byte) radiotap.ampdu
        :idx: int
        :return: int
            idx
        :return: collections.namedtuple
strip ( 8 byte ) radiotap . ampdu : idx : int : return : int idx : return : collections . namedtuple