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fir.cpp
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//
// Copyright (c) 2005, 2006 by CodeSourcery
// Copyright (c) 2013 Stefan Seefeld
// All rights reserved.
//
// This file is part of OpenVSIP. It is made available under the
// license contained in the accompanying LICENSE.GPL file.
#define VERBOSE 0
#include <vsip/initfin.hpp>
#include <vsip/support.hpp>
#include <vsip/signal.hpp>
#include <vsip/math.hpp>
#include <vsip/matrix.hpp>
#include <test.hpp>
#include <cmath>
using namespace ovxx;
template <typename T, vsip::symmetry_type sym>
void
test_fir(
vsip::length_type D,
vsip::length_type M,
vsip::length_type N)
{
const unsigned insize = 2 * M * N;
const unsigned outsize = ((2 * M * N) + D - 1) / D + 1;
vsip::Vector<T> input(insize);
vsip::Vector<T> output1(outsize);
vsip::Vector<T> output2(2 * M * (N+D-1)/D);
vsip::Vector<T> output3(2 * M * (N+D-1)/D);
vsip::Vector<T> convinput(insize+M, T(0)); // room for initial state
vsip::Vector<T> convout((insize+M-1)/D + 1, T(0)); // per spec
vsip::Vector<T> kernel(M);
for (vsip::length_type i = 0; i < insize; ++i)
input.put(i, T(i+1));
for (vsip::length_type i = 0; i < M; ++i)
kernel.put(i, T(2*i+1));
vsip::Convolution<vsip::const_Vector,sym,vsip::support_same,T,1> conv(
kernel, vsip::Domain<1>(convinput.size()), D);
const vsip::length_type pad = (sym == vsip::nonsym) ? M/2 :
(sym == vsip::sym_even_len_even) ? M : M - 1;
convinput(vsip::Domain<1>(pad, 1, insize)) = input;
conv(convinput, convout); // emulate chained FIR
vsip::Fir<> dummy(
vsip::const_Vector<>(vsip::length_type(3),vsip::scalar_f(1)), N*10);
test_assert(dummy.decimation() == 1);
vsip::Fir<T,sym,vsip::state_save,1> fir1a(kernel, N, D);
vsip::Fir<T,sym,vsip::state_save,1> fir1b(fir1a);
vsip::Fir<T,sym,vsip::state_no_save,1> fir2(kernel, N, D);
test_assert(fir1a.symmetry == sym);
test_assert(fir2.symmetry == sym);
test_assert(fir1a.continuous_filter == vsip::state_save);
test_assert(fir2.continuous_filter == vsip::state_no_save);
const vsip::length_type order = (sym == vsip::nonsym) ? M :
(sym == vsip::sym_even_len_even) ? 2 * M : (2 * M) - 1;
test_assert(fir1a.kernel_size() == order);
test_assert(fir1b.kernel_size() == order);
test_assert(fir1a.filter_order() == order);
test_assert(fir1b.filter_order() == order);
// test_assert(fir1a.symmetry()
test_assert(fir1a.input_size() == N);
test_assert(fir1b.input_size() == N);
test_assert(fir1a.output_size() == (N+D-1)/D);
test_assert(fir1b.output_size() == (N+D-1)/D);
test_assert(fir1a.continuous_filtering() == fir1a.continuous_filter);
test_assert(fir2.continuous_filtering() == fir2.continuous_filter);
test_assert(fir1a.decimation() == D);
test_assert(fir1b.decimation() == D);
vsip::length_type got1a = 0;
for (vsip::length_type i = 0; i < 2 * M; ++i) // chained
{
got1a += fir1a(
input(vsip::Domain<1>(i * N, 1, N)),
output1(vsip::Domain<1>(got1a, 1, (N + D - 1) / D)));
}
// vsip::Vector<T> o1(output1.size(), T(0));
// o1 = convout(vsip::Domain<1>(output1.size())) - output1;
vsip::length_type got1b = 0;
vsip::length_type got2 = 0;
for (vsip::length_type i = 0; i < 2 * M; ++i) // not
{
got1b += fir1b(input(vsip::Domain<1>(i * N, 1, N)),
output2(vsip::Domain<1>(got1b, 1, (N+D-1)/D)));
fir1b.reset();
got2 += fir2(input(vsip::Domain<1>(i * N, 1, N)),
output3(vsip::Domain<1>(got2, 1, (N+D-1)/D)));
}
vsip::Vector<T> reference(convout(vsip::Domain<1>(got1a)));
vsip::Vector<T> result(output1(vsip::Domain<1>(got1a)));
test_assert(outsize - got1a <= 1);
double error_rr = test::diff(result, reference);
double error_23 = test::diff(output2(vsip::Domain<1>(got1b)),
output3(vsip::Domain<1>(got1b)));
#if VERBOSE
using vsip::is_same;
std::cout << "error_rr: " << error_rr
<< " error_23: " << error_23
<< " " << D << "/" << M << "/" << N
<< " "
<< (is_same<T, float>::value ? "float" :
is_same<T, double>::value ? "double" :
is_same<T, std::complex<float> >::value ? "complex<float>" :
is_same<T, std::complex<double> >::value ? "complex<double>" :
"*unknown*")
<< " " << (sym == vsip::sym_even_len_even ? "even" :
sym == vsip::sym_even_len_odd ? "odd" : "nonsym")
<< std::endl;
if (!(error_rr < -100))
{
std::cout << "result: " << result;
std::cout << "reference: " << reference;
}
if (!(error_23 < -100))
{
std::cout << "- (num chunks) 2*M : " << (2*M) << std::endl;
std::cout << "- (in chunk size) N : " << (N) << std::endl;
std::cout << "- (out chunk size) (N+D-1)/D: " << ((N+D-1)/D) << std::endl;
std::cout << "output2:\n" << output2(vsip::Domain<1>(got1b));
std::cout << "output3:\n" << output3(vsip::Domain<1>(got1b));
}
#endif
test_assert(error_rr < -100);
// NOTE: got1a may not equal got1b. fir1b is reset between each frame.
// if N % D != 0, this may lead to different number of outputs.
test_assert(got1a == got1b || N % D != 0);
test_assert(got1b == got2);
test_assert(error_23 < -100);
}
int
main(int argc, char** argv)
{
vsip::vsipl init(argc, argv);
test_fir<float,vsip::nonsym>(1,2,3);
test_fir<float,vsip::nonsym>(1,3,5);
test_fir<float,vsip::nonsym>(1,3,9);
test_fir<float,vsip::nonsym>(1,4,8);
test_fir<float,vsip::nonsym>(1,23,31);
test_fir<float,vsip::nonsym>(1,32,1024);
test_fir<float,vsip::nonsym>(2,3,5);
test_fir<float,vsip::nonsym>(2,3,9);
test_fir<float,vsip::nonsym>(2,4,8);
test_fir<float,vsip::nonsym>(2,23,31);
test_fir<float,vsip::nonsym>(2,32,1024);
#if VSIP_IMPL_TEST_DOUBLE
test_fir<double,vsip::nonsym>(2,3,5);
test_fir<double,vsip::nonsym>(2,3,9);
test_fir<double,vsip::nonsym>(2,4,8);
test_fir<double,vsip::nonsym>(2,23,31);
test_fir<double,vsip::nonsym>(2,32,1024);
#endif
test_fir<std::complex<float>,vsip::nonsym>(2,3,5);
test_fir<std::complex<float>,vsip::nonsym>(2,3,9);
test_fir<std::complex<float>,vsip::nonsym>(2,4,8);
test_fir<std::complex<float>,vsip::nonsym>(2,23,31);
test_fir<std::complex<float>,vsip::nonsym>(2,32,1024);
#if VSIP_IMPL_TEST_DOUBLE
test_fir<std::complex<double>,vsip::nonsym>(2,3,5);
test_fir<std::complex<double>,vsip::nonsym>(2,3,9);
test_fir<std::complex<double>,vsip::nonsym>(2,4,8);
test_fir<std::complex<double>,vsip::nonsym>(2,23,31);
test_fir<std::complex<double>,vsip::nonsym>(2,32,1024);
#endif
test_fir<float,vsip::nonsym>(3,4,8);
test_fir<float,vsip::nonsym>(3,4,21);
test_fir<float,vsip::nonsym>(3,9,27);
test_fir<float,vsip::nonsym>(3,23,31);
test_fir<float,vsip::nonsym>(3,32,1024);
test_fir<float,vsip::nonsym>(4,5,13);
test_fir<float,vsip::nonsym>(4,7,31);
test_fir<float,vsip::nonsym>(4,8,32);
test_fir<float,vsip::nonsym>(4,23,31);
test_fir<float,vsip::nonsym>(4,32,1024);
test_fir<float,vsip::sym_even_len_even>(1,1,3);
test_fir<float,vsip::sym_even_len_even>(1,2,3);
test_fir<float,vsip::sym_even_len_even>(1,3,5);
test_fir<float,vsip::sym_even_len_even>(1,3,9);
test_fir<float,vsip::sym_even_len_even>(1,4,8);
test_fir<float,vsip::sym_even_len_even>(1,23,57);
test_fir<float,vsip::sym_even_len_even>(1,32,1024);
test_fir<float,vsip::sym_even_len_even>(2,2,3);
test_fir<float,vsip::sym_even_len_even>(2,3,5);
test_fir<float,vsip::sym_even_len_even>(2,3,9);
test_fir<float,vsip::sym_even_len_even>(2,4,8);
test_fir<float,vsip::sym_even_len_even>(2,23,57);
test_fir<float,vsip::sym_even_len_even>(2,32,1024);
test_fir<float,vsip::sym_even_len_even>(3,3,5);
test_fir<float,vsip::sym_even_len_even>(3,4,8);
test_fir<float,vsip::sym_even_len_even>(3,23,57);
test_fir<float,vsip::sym_even_len_even>(3,32,1024);
test_fir<float,vsip::sym_even_len_odd>(1,2,3);
test_fir<float,vsip::sym_even_len_odd>(1,3,5);
test_fir<float,vsip::sym_even_len_odd>(1,3,9);
test_fir<float,vsip::sym_even_len_odd>(1,4,9);
test_fir<float,vsip::sym_even_len_odd>(1,23,57);
test_fir<float,vsip::sym_even_len_odd>(1,32,1024);
test_fir<float,vsip::sym_even_len_odd>(2,2,3);
test_fir<float,vsip::sym_even_len_odd>(2,3,5);
test_fir<float,vsip::sym_even_len_odd>(2,3,9);
test_fir<float,vsip::sym_even_len_odd>(2,4,10);
test_fir<float,vsip::sym_even_len_odd>(2,23,57);
test_fir<float,vsip::sym_even_len_odd>(2,32,1024);
test_fir<float,vsip::sym_even_len_odd>(3,3,5);
test_fir<float,vsip::sym_even_len_odd>(3,4,9);
test_fir<float,vsip::sym_even_len_odd>(3,23,55);
test_fir<float,vsip::sym_even_len_odd>(3,32,1024);
return 0;
}