3 # Copyright 2008 Free Software Foundation, Inc.
5 # This file is part of GNU Radio
7 # GNU Radio is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3, or (at your option)
12 # GNU Radio is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License along
18 # with this program; if not, write to the Free Software Foundation, Inc.,
19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 from gnuradio import gr, gr_unittest
27 primes = (2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,
28 59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,
29 137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,
30 227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311)
33 class test_fft_filter(gr_unittest.TestCase):
36 ph = gcell.program_handle_from_filename("../../gcell/lib/spu/gcell_all")
37 opts = gcell.jm_options(ph, 1)
38 self.mgr = gcell.job_manager(opts)
39 gcell.set_singleton(self.mgr)
44 def assert_fft_ok2(self, expected_result, result_data):
45 expected_result = expected_result[:len(result_data)]
46 self.assertComplexTuplesAlmostEqual2 (expected_result, result_data,
47 abs_eps=1e-9, rel_eps=4e-4)
49 def assert_fft_float_ok2(self, expected_result, result_data, abs_eps=1e-9, rel_eps=4e-4):
50 expected_result = expected_result[:len(result_data)]
51 self.assertFloatTuplesAlmostEqual2 (expected_result, result_data,
57 src_data = tuple([complex(primes[2*i], primes[2*i+1]) for i in range(fft_size)])
59 expected_result = ((4377+4516j),
60 (-1706.1268310546875+1638.4256591796875j),
61 (-915.2083740234375+660.69427490234375j),
62 (-660.370361328125+381.59600830078125j),
63 (-499.96044921875+238.41630554199219j),
64 (-462.26748657226562+152.88948059082031j),
65 (-377.98440551757812+77.5928955078125j),
66 (-346.85821533203125+47.152004241943359j),
68 (-286.33609008789062-22.257017135620117j),
69 (-271.52999877929688-33.081821441650391j),
70 (-224.6358642578125-67.019538879394531j),
71 (-244.24473571777344-91.524826049804688j),
72 (-203.09068298339844-108.54627227783203j),
73 (-198.45195007324219-115.90768432617188j),
74 (-182.97744750976562-128.12318420410156j),
76 (-130.33688354492188-173.83778381347656j),
77 (-141.19784545898438-190.28807067871094j),
78 (-111.09677124023438-214.48896789550781j),
79 (-70.039543151855469-242.41630554199219j),
80 (-68.960540771484375-228.30015563964844j),
81 (-53.049201965332031-291.47097778320312j),
82 (-28.695289611816406-317.64553833007812j),
84 (45.301143646240234-335.69509887695312j),
85 (91.936195373535156-373.32437133789062j),
86 (172.09465026855469-439.275146484375j),
87 (242.24473571777344-504.47515869140625j),
88 (387.81732177734375-666.6788330078125j),
89 (689.48553466796875-918.2142333984375j),
90 (1646.539306640625-1694.1956787109375j))
92 src = gr.vector_source_c(src_data)
93 s2v = gr.stream_to_vector(gr.sizeof_gr_complex, fft_size)
94 fft = gcell.fft_vcc(fft_size, True, [], False)
95 v2s = gr.vector_to_stream(gr.sizeof_gr_complex, fft_size)
96 dst = gr.vector_sink_c()
97 tb.connect(src, s2v, fft, v2s, dst)
99 result_data = dst.data()
100 #print 'expected:', expected_result
101 #print 'results: ', result_data
102 #self.assertComplexTuplesAlmostEqual (expected_result, result_data, 5)
103 self.assert_fft_ok2(expected_result, result_data)
109 tmp_data = ((4377+4516j),
110 (-1706.1268310546875+1638.4256591796875j),
111 (-915.2083740234375+660.69427490234375j),
112 (-660.370361328125+381.59600830078125j),
113 (-499.96044921875+238.41630554199219j),
114 (-462.26748657226562+152.88948059082031j),
115 (-377.98440551757812+77.5928955078125j),
116 (-346.85821533203125+47.152004241943359j),
118 (-286.33609008789062-22.257017135620117j),
119 (-271.52999877929688-33.081821441650391j),
120 (-224.6358642578125-67.019538879394531j),
121 (-244.24473571777344-91.524826049804688j),
122 (-203.09068298339844-108.54627227783203j),
123 (-198.45195007324219-115.90768432617188j),
124 (-182.97744750976562-128.12318420410156j),
126 (-130.33688354492188-173.83778381347656j),
127 (-141.19784545898438-190.28807067871094j),
128 (-111.09677124023438-214.48896789550781j),
129 (-70.039543151855469-242.41630554199219j),
130 (-68.960540771484375-228.30015563964844j),
131 (-53.049201965332031-291.47097778320312j),
132 (-28.695289611816406-317.64553833007812j),
134 (45.301143646240234-335.69509887695312j),
135 (91.936195373535156-373.32437133789062j),
136 (172.09465026855469-439.275146484375j),
137 (242.24473571777344-504.47515869140625j),
138 (387.81732177734375-666.6788330078125j),
139 (689.48553466796875-918.2142333984375j),
140 (1646.539306640625-1694.1956787109375j))
142 src_data = tuple([x/fft_size for x in tmp_data])
144 expected_result = tuple([complex(primes[2*i], primes[2*i+1]) for i in range(fft_size)])
146 src = gr.vector_source_c(src_data)
147 s2v = gr.stream_to_vector(gr.sizeof_gr_complex, fft_size)
148 fft = gcell.fft_vcc(fft_size, False, [], False)
149 v2s = gr.vector_to_stream(gr.sizeof_gr_complex, fft_size)
150 dst = gr.vector_sink_c()
151 tb.connect(src, s2v, fft, v2s, dst)
153 result_data = dst.data()
154 #print 'expected:', expected_result
155 #print 'results: ', result_data
156 #self.assertComplexTuplesAlmostEqual (expected_result, result_data, 5)
157 self.assert_fft_ok2(expected_result, result_data)
160 if __name__ == '__main__':