1 files changed, 77 insertions, 0 deletions
diff --git a/gr-digital/python/qa_ts_insert_zeros.py b/gr-digital/python/qa_ts_insert_zeros.py
new file mode 100644
index 0000000000..9e71e8df28
--- /dev/null
+++ b/gr-digital/python/qa_ts_insert_zeros.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+# Copyright 2012 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+import time
+import itertools
+
+from gnuradio import gr, gr_unittest
+try: import pmt
+except: from gruel import pmt
+import digital_swig as digital
+from utils import tagged_streams
+
+class qa_ts_insert_zeros (gr_unittest.TestCase):
+
+    def test_one(self):
+        n_packets = 10
+        packet_length = 1000
+        packets = [[i]*packet_length for i in range(1, n_packets+1)]
+        tagname = "packet_length"
+        data, tags = tagged_streams.packets_to_vectors(packets, tagname)
+        tb = gr.top_block()
+        src = gr.vector_source_c(data, False, 1, tags)
+        rate_in = 16000
+        rate_out = 48000
+        ratio = float(rate_out) / rate_in
+        throttle1 = gr.throttle(gr.sizeof_gr_complex, rate_in)
+        insert_zeros = digital.ts_insert_zeros_cc(tagname)
+        throttle2 = gr.throttle(gr.sizeof_gr_complex, rate_out)
+        head = gr.head(gr.sizeof_gr_complex, int(n_packets * packet_length * ratio*2))
+        snk = gr.vector_sink_c()
+        tb.connect(src, throttle1, insert_zeros, throttle2, head, snk)
+        tb.run()
+        data = snk.data()
+        state = 1
+        pos = 0
+        last_non_zero = 0
+        for i, d in enumerate(data):
+            if d != 0:
+                last_non_zero = i
+            if pos == 0:
+                if (d == state):
+                    pos = pos + 1
+                elif (d != 0):
+                    raise ValueError("Invalid")
+            elif pos > 0:
+                if (d != state):
+                    raise ValueError("Invalid")
+                pos = pos + 1
+                if pos == packet_length:
+                    state += 1
+                    pos = 0
+        min_ratio = ratio-1
+        max_ratio = ratio+1
+        self.assertEqual(state-1, n_packets)
+        self.assertTrue(last_non_zero > min_ratio*packet_length*n_packets)
+        self.assertTrue(last_non_zero < max_ratio*packet_length*n_packets)
+
+if __name__ == '__main__':
+    gr_unittest.run(qa_ts_insert_zeros, "qa_ts_insert_zeros.xml")