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//
// Copyright 2017 Ettus Research (National Instruments)
//
// This program 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 of the License, or
// (at your option) any later version.
//
// This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
//
#include "ad937x_fir.hpp"
ad937x_fir::ad937x_fir() :
ad937x_fir(0, { 1, 0 })
{
}
ad937x_fir::ad937x_fir(int8_t gain, const std::vector<int16_t>& coefficients) :
// These two constructors will be run in the order they are declared in the class definition
// see C++ standard 12.6.2 section 13.3
_fir_coefficients(coefficients),
_fir({gain,
static_cast<uint8_t>(_fir_coefficients.size()),
_fir_coefficients.data()})
{
}
// ad937x_fir.fir should not be accessed during this operation
void ad937x_fir::set_fir(int8_t gain, const std::vector<int16_t>& coefficients)
{
_fir.gain_dB = gain;
_fir_coefficients = coefficients;
_fir.coefs = _fir_coefficients.data();
_fir.numFirCoefs = static_cast<uint8_t>(_fir_coefficients.size());
}
std::vector<int16_t> ad937x_fir::get_fir(int8_t &gain) const
{
gain = _fir.gain_dB;
return _fir_coefficients;
}
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