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qa_firdes.cc
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/* -*- c++ -*- */
/*
* Copyright 2002,2012,2018 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include <gnuradio/filter/firdes.h>
#include <boost/test/unit_test.hpp>
namespace gr {
namespace filter {
#define NELEM(x) (sizeof(x) / sizeof(x[0]))
using std::vector;
void print_taps(std::ostream& s, vector<float>& v)
{
std::streamsize tmp = s.precision(9);
for (unsigned int i = 0; i < v.size(); i++) {
s << v[i] << ", ";
}
s << std::endl;
s.precision(tmp);
}
static void check_symmetry(vector<float>& v)
{
int n = v.size();
int m = n / 2;
for (int i = 0; i < m; i++)
BOOST_CHECK(std::abs(v[i] - v[n - i - 1]) <= 1e-9);
}
const static float t1_exp[39] = {
0.00111410965, -0.000583702058, -0.00192639488, 2.30933896e-18, 0.00368289859,
0.00198723329, -0.0058701504, -0.00666110823, 0.0068643163, 0.0147596458,
-0.00398709066, -0.0259727165, -0.0064281947, 0.0387893915, 0.0301109217,
-0.0507995859, -0.0833103433, 0.0593735874, 0.310160041, 0.437394291,
0.310160041, 0.0593735874, -0.0833103433, -0.0507995859, 0.0301109217,
0.0387893915, -0.0064281947, -0.0259727165, -0.00398709066, 0.0147596458,
0.0068643163, -0.00666110823, -0.0058701504, 0.00198723329, 0.00368289859,
2.30933896e-18, -0.00192639488, -0.000583702058, 0.00111410965
};
const static float t2_exp[39] = {
-0.00111255341, 0.000582886743, 0.00192370394, -2.30611317e-18, -0.0036777542,
-0.00198445749, 0.00586195057, 0.00665180339, -0.00685472786, -0.0147390282,
0.00398152089, 0.0259364359, 0.00641921535, -0.0387352072, -0.0300688613,
0.0507286265, 0.0831939653, -0.0592906512, -0.309726775, 0.561578512,
-0.309726775, -0.0592906512, 0.0831939653, 0.0507286265, -0.0300688613,
-0.0387352072, 0.00641921535, 0.0259364359, 0.00398152089, -0.0147390282,
-0.00685472786, 0.00665180339, 0.00586195057, -0.00198445749, -0.0036777542,
-2.30611317e-18, 0.00192370394, 0.000582886743, -0.00111255341
};
const static float t3_exp[77] = {
0.000119983582, 0.000607753696, 0.000897691818, -0.0010834164, 2.31763315e-05,
-0.00179765455, 0.000822491478, 0.0014836716, 0.000661226455, 0.00204213755,
-0.00466352375, -0.000186616904, -0.00289339852, 0.00297895772, 0.00664081471,
-0.00184599939, 0.00318629085, -0.0135707017, 3.90737225e-17, 0.000884963025,
0.00652826019, 0.0175401419, -0.013614703, 0.00140484457, -0.0266032815,
0.00285289111, 0.0201372877, 0.00739659835, 0.0347237773, -0.0490655154,
-0.00766157778, -0.0385900773, 0.0151521852, 0.0955788717, -0.0159830209,
0.0826964602, -0.281061709, -0.109556615, 0.528591633, -0.109556615,
-0.281061709, 0.0826964602, -0.0159830209, 0.0955788717, 0.0151521852,
-0.0385900773, -0.00766157778, -0.0490655154, 0.0347237773, 0.00739659835,
0.0201372877, 0.00285289111, -0.0266032815, 0.00140484457, -0.013614703,
0.0175401419, 0.00652826019, 0.000884963025, 3.90737225e-17, -0.0135707017,
0.00318629085, -0.00184599939, 0.00664081471, 0.00297895772, -0.00289339852,
-0.000186616904, -0.00466352375, 0.00204213755, 0.000661226455, 0.0014836716,
0.000822491478, -0.00179765455, 2.31763315e-05, -0.0010834164, 0.000897691818,
0.000607753696, 0.000119983582
};
const static float t4_exp[49] = { // low pass
0.00105995836, 0.000226392993, -0.00127760693, -0.000967577624, 0.00159226439,
0.00243603508, -0.00145168288, -0.00476933597, 5.28154159e-18, 0.0075675128,
0.00365885533, -0.00976149458, -0.010118301, 0.00963691529, 0.0193619132,
-0.0049355682, -0.0306062996, -0.00726737641, 0.0423667729, 0.0319742262,
-0.0527484827, -0.0850463286, 0.0598905981, 0.31065014, 0.437056929,
0.31065014, 0.0598905981, -0.0850463286, -0.0527484827, 0.0319742262,
0.0423667729, -0.00726737641, -0.0306062996, -0.0049355682, 0.0193619132,
0.00963691529, -0.010118301, -0.00976149458, 0.00365885533, 0.0075675128,
5.28154159e-18, -0.00476933597, -0.00145168288, 0.00243603508, 0.00159226439,
-0.000967577624, -0.00127760693, 0.000226392993, 0.00105995836
};
const static float t5_exp[49] = { // high pass
-0.00106212357, -0.000226855438, 0.00128021673, 0.000969554123, -0.00159551692,
-0.00244101114, 0.00145464821, 0.00477907853, -5.2923301e-18, -0.00758297089,
-0.00366632943, 0.0097814342, 0.0101389699, -0.00965660065, -0.0194014646,
0.00494565023, 0.0306688193, 0.00728222169, -0.0424533151, -0.0320395418,
0.052856233, 0.0852200612, -0.0600129403, -0.311284721, 0.563078225,
-0.311284721, -0.0600129403, 0.0852200612, 0.052856233, -0.0320395418,
-0.0424533151, 0.00728222169, 0.0306688193, 0.00494565023, -0.0194014646,
-0.00965660065, 0.0101389699, 0.0097814342, -0.00366632943, -0.00758297089,
-5.2923301e-18, 0.00477907853, 0.00145464821, -0.00244101114, -0.00159551692,
0.000969554123, 0.00128021673, -0.000226855438, -0.00106212357
};
const static float t6_exp[] = { // bandpass
0.000280927314, -0.00104732765, 7.93654181e-05, -0.000427086081, 0.000759583549,
0.000896608108, -0.0004236323, 0.000242393609, -0.00221229903, 0.000480753428,
0.000262036163, 0.00144372846, 0.002229932, -0.00272060721, 5.73114157e-05,
-0.00429763459, 0.0018788334, 0.00321715139, 0.00135705515, 0.00396509003,
-0.0085761901, -0.000325722882, -0.00480572786, 0.00472192047, 0.0100754956,
-0.00268871989, 0.00446796743, -0.0183707699, 5.11965838e-17, 0.00112507516,
0.00807165075, 0.0211376436, -0.0160245355, 0.00161809532, -0.0300405379,
0.00316381129, 0.0219683405, 0.00795029569, 0.036828734, -0.0514246747,
-0.00794606097, -0.0396579579, 0.0154495509, 0.0968139917, -0.0161030479,
0.0829729438, -0.281171471, -0.109406292, 0.527556598, -0.109406292,
-0.281171471, 0.0829729438, -0.0161030479, 0.0968139917, 0.0154495509,
-0.0396579579, -0.00794606097, -0.0514246747, 0.036828734, 0.00795029569,
0.0219683405, 0.00316381129, -0.0300405379, 0.00161809532, -0.0160245355,
0.0211376436, 0.00807165075, 0.00112507516, 5.11965838e-17, -0.0183707699,
0.00446796743, -0.00268871989, 0.0100754956, 0.00472192047, -0.00480572786,
-0.000325722882, -0.0085761901, 0.00396509003, 0.00135705515, 0.00321715139,
0.0018788334, -0.00429763459, 5.73114157e-05, -0.00272060721, 0.002229932,
0.00144372846, 0.000262036163, 0.000480753428, -0.00221229903, 0.000242393609,
-0.0004236323, 0.000896608108, 0.000759583549, -0.000427086081, 7.93654181e-05,
-0.00104732765, 0.000280927314
};
BOOST_AUTO_TEST_CASE(t1)
{
vector<float> taps = firdes::low_pass(1.0, 8000, 1750, 500, fft::window::WIN_HAMMING);
// std::cout << "ntaps: " << taps.size() << std::endl;
// print_taps(std::cout, taps);
BOOST_REQUIRE_EQUAL(NELEM(t1_exp), taps.size());
for (unsigned int i = 0; i < taps.size(); i++)
BOOST_CHECK(std::abs(t1_exp[i] - taps[i]) <= 1e-9);
check_symmetry(taps);
}
BOOST_AUTO_TEST_CASE(t2)
{
vector<float> taps =
firdes::high_pass(1.0, 8000, 1750, 500, fft::window::WIN_HAMMING);
// std::cout << "ntaps: " << taps.size() << std::endl;
// print_taps(std::cout, taps);
BOOST_REQUIRE_EQUAL(NELEM(t2_exp), taps.size());
for (unsigned int i = 0; i < taps.size(); i++)
BOOST_CHECK(std::abs(t2_exp[i] - taps[i]) <= 1e-9);
check_symmetry(taps);
}
BOOST_AUTO_TEST_CASE(t3)
{
vector<float> taps = firdes::band_pass(1.0,
20e6,
5.75e6 - (5.28e6 / 2),
5.75e6 + (5.28e6 / 2),
0.62e6,
fft::window::WIN_HAMMING);
// std::cout << "ntaps: " << taps.size() << std::endl;
// print_taps(std::cout, taps);
BOOST_REQUIRE_EQUAL(NELEM(t3_exp), taps.size());
for (unsigned int i = 0; i < taps.size(); i++)
BOOST_CHECK(std::abs(t3_exp[i] - taps[i]) <= 1e-7);
check_symmetry(taps);
}
BOOST_AUTO_TEST_CASE(t4)
{
vector<float> taps =
firdes::low_pass_2(1.0, 8000, 1750, 500, 66, fft::window::WIN_HAMMING);
// std::cout << "ntaps: " << taps.size() << std::endl;
// print_taps(std::cout, taps);
BOOST_REQUIRE_EQUAL(NELEM(t4_exp), taps.size());
for (unsigned int i = 0; i < taps.size(); i++)
BOOST_CHECK(std::abs(t4_exp[i] - taps[i]) <= 1e-9);
check_symmetry(taps);
}
BOOST_AUTO_TEST_CASE(t5)
{
vector<float> taps =
firdes::high_pass_2(1.0, 8000, 1750, 500, 66, fft::window::WIN_HAMMING);
// std::cout << "ntaps: " << taps.size() << std::endl;
// print_taps(std::cout, taps);
BOOST_REQUIRE_EQUAL(NELEM(t5_exp), taps.size());
for (unsigned int i = 0; i < taps.size(); i++)
BOOST_CHECK(std::abs(t5_exp[i] - taps[i]) <= 1e-9);
check_symmetry(taps);
}
BOOST_AUTO_TEST_CASE(t6)
{
vector<float> taps = firdes::band_pass_2(1.0,
20e6,
5.75e6 - (5.28e6 / 2),
5.75e6 + (5.28e6 / 2),
0.62e6,
66,
fft::window::WIN_HAMMING);
// std::cout << "ntaps: " << taps.size() << std::endl;
// print_taps(std::cout, taps);
BOOST_REQUIRE_EQUAL(NELEM(t6_exp), taps.size());
for (unsigned int i = 0; i < taps.size(); i++)
BOOST_CHECK(std::abs(t6_exp[i] - taps[i]) <= 1e-7);
check_symmetry(taps);
}
} /* namespace filter */
} /* namespace gr */