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Move some MatchedFilter code to .cpp file.
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@ -133,6 +133,7 @@ CPPSRC = main.cpp \
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channel_decimator.cpp \
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channel_decimator.cpp \
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dsp_decimate.cpp \
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dsp_decimate.cpp \
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dsp_demodulate.cpp \
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dsp_demodulate.cpp \
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matched_filter.cpp \
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proc_am_audio.cpp \
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proc_am_audio.cpp \
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proc_nfm_audio.cpp \
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proc_nfm_audio.cpp \
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proc_wfm_audio.cpp \
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proc_wfm_audio.cpp \
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47
firmware/baseband/matched_filter.cpp
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47
firmware/baseband/matched_filter.cpp
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@ -0,0 +1,47 @@
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/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "matched_filter.hpp"
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namespace dsp {
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namespace matched_filter {
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bool MatchedFilter::execute_once(
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const sample_t input
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) {
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samples[samples.size() - decimation_factor + decimation_phase] = input;
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advance_decimation_phase();
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if( is_new_decimation_cycle() ) {
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output = std::inner_product(samples.cbegin(), samples.cend(), taps.cbegin(), sample_t { 0.0f, 0.0f });
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shift_by_decimation_factor();
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return true;
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} else {
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return false;
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}
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}
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void MatchedFilter::shift_by_decimation_factor() {
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std::rotate(samples.begin(), samples.begin() + decimation_factor, samples.end());
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}
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} /* namespace matched_filter */
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} /* namespace dsp */
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@ -54,18 +54,7 @@ public:
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bool execute_once(
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bool execute_once(
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const sample_t input
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const sample_t input
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) {
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);
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samples[samples.size() - decimation_factor + decimation_phase] = input;
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advance_decimation_phase();
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if( is_new_decimation_cycle() ) {
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output = std::inner_product(samples.cbegin(), samples.cend(), taps.cbegin(), sample_t { 0.0f, 0.0f });
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shift_by_decimation_factor();
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return true;
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} else {
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return false;
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}
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}
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sample_t get_output() const {
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sample_t get_output() const {
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return output;
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return output;
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@ -80,9 +69,7 @@ private:
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size_t decimation_phase { 0 };
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size_t decimation_phase { 0 };
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sample_t output;
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sample_t output;
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void shift_by_decimation_factor() {
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void shift_by_decimation_factor();
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std::rotate(samples.begin(), samples.begin() + decimation_factor, samples.end());
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}
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void advance_decimation_phase() {
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void advance_decimation_phase() {
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decimation_phase = (decimation_phase + 1) % decimation_factor;
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decimation_phase = (decimation_phase + 1) % decimation_factor;
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