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138 lines
3.2 KiB
C++
138 lines
3.2 KiB
C++
/***********************************************************************
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qwindowfunction.h - Header file for QWindowFunction,
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QWindowFunctionManager, QRectangularFunction,
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QHammingFunction, QHannFunction
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Template classes necessary for applying a window function to a discrete
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set of samples.
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************************************************************************
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This file is part of QRealFourier.
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QRealFourier is free software: you can redistribute it and/or modify it
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under the terms of the Lesser GNU General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Foobar is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the Lesser GNU General Public
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License for more details.
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You should have received a copy of the Lesser GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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************************************************************************
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Copyright © 2012 - 2013 Christoph Stallmann, University of Pretoria
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Developer: Christoph Stallmann
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University of Pretoria
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Department of Computer Science
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http://www.visore.org
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http://sourceforge.net/projects/qrealfourier
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http://github.com/visore/QRealFourier
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qrealfourier@visore.org
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qrealfourier@gmail.com
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***********************************************************************/
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#ifndef QWINDOWFUNCTION_H
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#define QWINDOWFUNCTION_H
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#include <QList>
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#include <QStringList>
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#include <QVector>
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#include "math.h"
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#include <qmath.h>
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/**********************************************************
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QWindowFunction
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**********************************************************/
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template <typename T>
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class QWindowFunction
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{
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typedef QVector<T> QWindow;
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public:
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virtual ~QWindowFunction() = default;
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void apply(T *data, int size);
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void create(int size);
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protected:
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void fillWindow(int size);
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virtual T calculate(int currentSample, int totalSamples) = 0;
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protected:
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QWindow mWindow;
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};
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/**********************************************************
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QWindowFunctionManager
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**********************************************************/
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template <typename T>
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class QWindowFunctionManager
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{
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public:
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static QWindowFunction<T>* createFunction(QString functionName);
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static QStringList functions();
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};
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/**********************************************************
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QRectangularFunction
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**********************************************************/
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template <typename T>
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class QRectangularFunction : public QWindowFunction<T>
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{
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protected:
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T calculate(int currentSample, int totalSamples);
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};
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/**********************************************************
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QHammingFunction
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**********************************************************/
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template <typename T>
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class QHammingFunction : public QWindowFunction<T>
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{
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protected:
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T calculate(int currentSample, int totalSamples);
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};
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/**********************************************************
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QHannFunction
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**********************************************************/
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template <typename T>
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class QHannFunction : public QWindowFunction<T>
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{
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protected:
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T calculate(int currentSample, int totalSamples);
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};
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#endif
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