Change in ...osmocom-bb[master]: trx_toolkit/data_msg.py: add burst randomization helpers

[fixeria]

fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmocom-bb/+/14648


Change subject: trx_toolkit/data_msg.py: add burst randomization helpers
......................................................................

trx_toolkit/data_msg.py: add burst randomization helpers

Change-Id: Idf1393d3d1f04e6c60b356b797a18e6f77b23554
---
M src/target/trx_toolkit/data_msg.py
1 file changed, 30 insertions(+), 18 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmocom-bb refs/changes/48/14648/1

diff --git a/src/target/trx_toolkit/data_msg.py b/src/target/trx_toolkit/data_msg.py
index 511f692..86d0827 100644
--- a/src/target/trx_toolkit/data_msg.py
+++ b/src/target/trx_toolkit/data_msg.py
@@ -82,6 +82,10 @@
 	def parse_burst(self, burst):
 		raise NotImplementedError
 
+	# Generate a random message specific burst
+	def rand_burst(self):
+		raise NotImplementedError
+
 	# Generates a random frame number
 	def rand_fn(self):
 		return random.randint(0, GSM_HYPERFRAME)
@@ -319,6 +323,14 @@
 		else:
 			self.burst = list(burst[:GSM_BURST_LEN])
 
+	# Generate a random message specific burst
+	def rand_burst(self, length = GSM_BURST_LEN):
+		self.burst = []
+
+		for i in range(length):
+			ubit = random.randint(0, 1)
+			self.burst.append(ubit)
+
 	# Transforms this message to TRX2L1 message
 	def gen_trx2l1(self):
 		# Allocate a new message
@@ -480,6 +492,14 @@
 		# Save
 		self.burst = burst_sbits
 
+	# Generate a random message specific burst
+	def rand_burst(self, length = GSM_BURST_LEN):
+		self.burst = []
+
+		for i in range(length):
+			sbit = random.randint(-127, 127)
+			self.burst.append(sbit)
+
 	# Transforms this message to L12TRX message
 	def gen_l12trx(self):
 		# Allocate a new message
@@ -499,28 +519,20 @@
 	log.basicConfig(level = log.DEBUG,
 		format = "[%(levelname)s] %(filename)s:%(lineno)d %(message)s")
 
-	# Generate two random bursts
-	burst_l12trx_ref = []
-	burst_trx2l1_ref = []
-
-	for i in range(0, GSM_BURST_LEN):
-		ubit = random.randint(0, 1)
-		burst_l12trx_ref.append(ubit)
-
-		sbit = random.randint(-127, 127)
-		burst_trx2l1_ref.append(sbit)
-
 	log.info("Generating the reference messages")
 
 	# Create messages of both types
-	msg_l12trx_ref = DATAMSG_L12TRX(burst = burst_l12trx_ref)
-	msg_trx2l1_ref = DATAMSG_TRX2L1(burst = burst_trx2l1_ref)
+	msg_l12trx_ref = DATAMSG_L12TRX()
+	msg_trx2l1_ref = DATAMSG_TRX2L1()
 
 	# Validate header randomization
 	for i in range(0, 100):
 		msg_l12trx_ref.rand_hdr()
 		msg_trx2l1_ref.rand_hdr()
 
+		msg_l12trx_ref.rand_burst()
+		msg_trx2l1_ref.rand_burst()
+
 		assert(msg_l12trx_ref.validate())
 		assert(msg_trx2l1_ref.validate())
 
@@ -550,9 +562,9 @@
 	log.info("Comparing decoded messages with the reference")
 
 	# Compare bursts
-	assert(msg_l12trx_dec.burst == burst_l12trx_ref)
-	assert(msg_trx2l1_dec.burst == burst_trx2l1_ref)
-	assert(msg_trx2l1_legacy_dec.burst == burst_trx2l1_ref)
+	assert(msg_l12trx_dec.burst == msg_l12trx_ref.burst)
+	assert(msg_trx2l1_dec.burst == msg_trx2l1_ref.burst)
+	assert(msg_trx2l1_legacy_dec.burst == msg_trx2l1_ref.burst)
 
 	log.info("Compare bursts: OK")
 
@@ -602,7 +614,7 @@
 	assert(msg_trx2l1_dec.fn == msg_l12trx_ref.fn)
 	assert(msg_trx2l1_dec.tn == msg_l12trx_ref.tn)
 
-	assert(msg_l12trx_dec.burst == DATAMSG.sbit2ubit(burst_trx2l1_ref))
-	assert(msg_trx2l1_dec.burst == DATAMSG.ubit2sbit(burst_l12trx_ref))
+	assert(msg_l12trx_dec.burst == DATAMSG.sbit2ubit(msg_trx2l1_ref.burst))
+	assert(msg_trx2l1_dec.burst == DATAMSG.ubit2sbit(msg_l12trx_ref.burst))
 
 	log.info("Check L12TRX <-> TRX2L1 type transformations: OK")

-- 
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Gerrit-Project: osmocom-bb
Gerrit-Branch: master
Gerrit-Change-Id: Idf1393d3d1f04e6c60b356b797a18e6f77b23554
Gerrit-Change-Number: 14648
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <axilirator at gmail.com>
Gerrit-MessageType: newchange
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