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/* -*- c++ -*- */
/*
* Copyright 2010,2012,2018 Free Software Foundation, Inc.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cpmmod_bc_impl.h"
#include <gnuradio/io_signature.h>
#include <gnuradio/math.h>
namespace gr {
namespace digital {
cpmmod_bc::sptr cpmmod_bc::make(
analog::cpm::cpm_type type, float h, int samples_per_sym, int L, double beta)
{
return gnuradio::make_block_sptr<cpmmod_bc_impl>(
"cpmmod_bc", (analog::cpm::cpm_type)type, h, samples_per_sym, L, beta);
}
cpmmod_bc::sptr cpmmod_bc::make_gmskmod_bc(int samples_per_sym, int L, double beta)
{
return gnuradio::make_block_sptr<cpmmod_bc_impl>(
"gmskmod_bc", analog::cpm::GAUSSIAN, 0.5, samples_per_sym, L, beta);
}
cpmmod_bc_impl::cpmmod_bc_impl(const std::string& name,
analog::cpm::cpm_type type,
float h,
int samples_per_sym,
int L,
double beta)
: hier_block2(name,
io_signature::make(1, 1, sizeof(char)),
io_signature::make2(1, 1, sizeof(gr_complex), sizeof(float))),
d_type(type),
d_index(h),
d_sps(samples_per_sym),
d_length(L),
d_beta(beta),
d_taps(analog::cpm::phase_response(type, samples_per_sym, L, beta)),
d_char_to_float(blocks::char_to_float::make()),
d_pulse_shaper(filter::interp_fir_filter_fff::make(samples_per_sym, d_taps)),
d_fm(analog::frequency_modulator_fc::make(GR_M_PI * h))
{
switch (type) {
case analog::cpm::LRC:
case analog::cpm::LSRC:
case analog::cpm::LREC:
case analog::cpm::TFM:
case analog::cpm::GAUSSIAN:
break;
default:
throw std::invalid_argument("cpmmod_bc_impl: invalid CPM type");
}
connect(self(), 0, d_char_to_float, 0);
connect(d_char_to_float, 0, d_pulse_shaper, 0);
connect(d_pulse_shaper, 0, d_fm, 0);
connect(d_fm, 0, self(), 0);
}
cpmmod_bc_impl::~cpmmod_bc_impl() {}
std::vector<float> cpmmod_bc_impl::taps() const { return d_taps; }
int cpmmod_bc_impl::type() const { return d_type; }
float cpmmod_bc_impl::index() const { return d_index; }
int cpmmod_bc_impl::samples_per_sym() const { return d_sps; }
int cpmmod_bc_impl::length() const { return d_length; }
double cpmmod_bc_impl::beta() const { return d_beta; }
} /* namespace digital */
} /* namespace gr */
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