fake_trx: share and use common GSM constants
Previously there were multiple definitions of some common GSM constants in different modules. Let's share them. Change-Id: Id6cdfbc6e8688755a0df7e44daa512c9afa7dad2
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@ -29,6 +29,7 @@ import sys
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from rand_burst_gen import RandBurstGen
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from rand_burst_gen import RandBurstGen
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from data_if import DATAInterface
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from data_if import DATAInterface
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from gsm_shared import *
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COPYRIGHT = \
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COPYRIGHT = \
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"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
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"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
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@ -73,7 +74,7 @@ class Application:
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# Generate a random frame number or use provided one
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# Generate a random frame number or use provided one
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if self.fn is None:
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if self.fn is None:
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fn = random.randint(0, DATAInterface.GSM_HYPERFRAME)
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fn = random.randint(0, GSM_HYPERFRAME)
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else:
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else:
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fn = self.fn
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fn = self.fn
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@ -106,7 +107,7 @@ class Application:
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self.tn, fn, self.pwr)
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self.tn, fn, self.pwr)
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# Increase frame number (for count > 1)
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# Increase frame number (for count > 1)
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fn = (fn + 1) % DATAInterface.GSM_HYPERFRAME
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fn = (fn + 1) % GSM_HYPERFRAME
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self.shutdown()
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self.shutdown()
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@ -27,6 +27,7 @@ import getopt
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import sys
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import sys
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from data_if import DATAInterface
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from data_if import DATAInterface
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from gsm_shared import *
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COPYRIGHT = \
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COPYRIGHT = \
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"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
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"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
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@ -75,7 +76,7 @@ class Application:
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# Generate a random frame number or use provided one
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# Generate a random frame number or use provided one
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if self.fn is None:
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if self.fn is None:
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fn = random.randint(0, DATAInterface.GSM_HYPERFRAME)
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fn = random.randint(0, GSM_HYPERFRAME)
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else:
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else:
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fn = self.fn
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fn = self.fn
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@ -109,7 +110,7 @@ class Application:
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self.tn, fn, self.pwr)
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self.tn, fn, self.pwr)
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# Increase frame number (for count > 1)
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# Increase frame number (for count > 1)
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fn = (fn + 1) % DATAInterface.GSM_HYPERFRAME
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fn = (fn + 1) % GSM_HYPERFRAME
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# Finish
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# Finish
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self.shutdown()
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self.shutdown()
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@ -28,6 +28,7 @@ import sys
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from threading import Timer
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from threading import Timer
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from udp_link import UDPLink
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from udp_link import UDPLink
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from gsm_shared import *
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COPYRIGHT = \
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COPYRIGHT = \
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"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
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"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
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@ -39,7 +40,6 @@ COPYRIGHT = \
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class CLCKGen:
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class CLCKGen:
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# GSM TDMA definitions
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# GSM TDMA definitions
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SEC_DELAY_US = 1000 * 1000
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SEC_DELAY_US = 1000 * 1000
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GSM_SUPERFRAME = 2715648
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GSM_FRAME_US = 4615.0
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GSM_FRAME_US = 4615.0
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# Average loop back delay
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# Average loop back delay
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@ -74,8 +74,8 @@ class CLCKGen:
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def send_clck_ind(self):
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def send_clck_ind(self):
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# Keep clock cycle
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# Keep clock cycle
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if self.clck_src % self.GSM_SUPERFRAME >= 0:
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if self.clck_src % GSM_HYPERFRAME >= 0:
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self.clck_src %= self.GSM_SUPERFRAME
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self.clck_src %= GSM_HYPERFRAME
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# We don't need to send so often
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# We don't need to send so often
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if self.clck_src % self.ind_period == 0:
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if self.clck_src % self.ind_period == 0:
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@ -25,10 +25,9 @@
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import random
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import random
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from udp_link import UDPLink
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from udp_link import UDPLink
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from gsm_shared import *
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class DATAInterface(UDPLink):
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class DATAInterface(UDPLink):
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# GSM PHY definitions
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GSM_HYPERFRAME = 2048 * 26 * 51
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def send_l1_msg(self, burst,
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def send_l1_msg(self, burst,
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tn = None, fn = None, rssi = None):
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tn = None, fn = None, rssi = None):
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@ -38,7 +37,7 @@ class DATAInterface(UDPLink):
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# Generate random frame number if not preset
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# Generate random frame number if not preset
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if fn is None:
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if fn is None:
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fn = random.randint(0, self.GSM_HYPERFRAME)
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fn = random.randint(0, GSM_HYPERFRAME)
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# Generate random RSSI if not preset
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# Generate random RSSI if not preset
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if rssi is None:
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if rssi is None:
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@ -79,7 +78,7 @@ class DATAInterface(UDPLink):
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# Generate random frame number if not preset
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# Generate random frame number if not preset
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if fn is None:
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if fn is None:
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fn = random.randint(0, self.GSM_HYPERFRAME)
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fn = random.randint(0, GSM_HYPERFRAME)
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# Generate random power level if not preset
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# Generate random power level if not preset
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if pwr is None:
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if pwr is None:
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@ -0,0 +1,31 @@
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#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# Virtual Um-interface (fake transceiver)
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# Common GSM constants
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#
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# (C) 2018 by Vadim Yanitskiy <axilirator@gmail.com>
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#
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# All Rights Reserved
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# TDMA definitions
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GSM_SUPERFRAME = 26 * 51
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GSM_HYPERFRAME = 2048 * GSM_SUPERFRAME
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# Burst length
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GSM_BURST_LEN = 148
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EDGE_BURST_LEN = GSM_BURST_LEN * 3
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@ -24,9 +24,9 @@
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import random
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import random
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from gsm_shared import *
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class RandBurstGen:
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class RandBurstGen:
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# GSM L1 definitions
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GSM_BURST_LEN = 148
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# GSM 05.02 Chapter 5.2.3 Normal Burst
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# GSM 05.02 Chapter 5.2.3 Normal Burst
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nb_tsc_list = [
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nb_tsc_list = [
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@ -125,7 +125,7 @@ class RandBurstGen:
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# Generate a frequency correction burst
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# Generate a frequency correction burst
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def gen_fb(self):
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def gen_fb(self):
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return [0] * self.GSM_BURST_LEN
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return [0] * GSM_BURST_LEN
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# Generate a synchronization burst
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# Generate a synchronization burst
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def gen_sb(self):
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def gen_sb(self):
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