| 1 | /***************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** Contact: Nokia Corporation ([email protected])
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| 5 | **
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| 6 | ** This file is part of the examples of the Qt Toolkit.
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| 7 | **
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| 8 | ** This program is free software: you can redistribute it and/or modify
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| 9 | ** it under the terms of the GNU Lesser General Public License as
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| 10 | ** published by the Free Software Foundation, either version 2.1. This
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| 11 | ** program is distributed in the hope that it will be useful, but WITHOUT
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| 12 | ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 13 | ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 14 | ** for more details. You should have received a copy of the GNU General
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| 15 | ** Public License along with this program. If not, see
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| 16 | ** <http://www.gnu.org/licenses/>.
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| 17 | **
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| 18 | ***************************************************************************/
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| 19 |
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| 20 | #ifndef FFTREAL_WRAPPER_H
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| 21 | #define FFTREAL_WRAPPER_H
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| 22 |
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| 23 | #include <QtCore/QtGlobal>
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| 24 |
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| 25 | #if defined(FFTREAL_LIBRARY)
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| 26 | # define FFTREAL_EXPORT Q_DECL_EXPORT
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| 27 | #else
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| 28 | # define FFTREAL_EXPORT Q_DECL_IMPORT
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| 29 | #endif
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| 30 |
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| 31 | class FFTRealWrapperPrivate;
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| 32 |
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| 33 | // Each pass of the FFT processes 2^X samples, where X is the
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| 34 | // number below.
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| 35 | static const int FFTLengthPowerOfTwo = 12;
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| 36 |
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| 37 | /**
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| 38 | * Wrapper around the FFTRealFixLen template provided by the FFTReal
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| 39 | * library
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| 40 | *
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| 41 | * This class instantiates a single instance of FFTRealFixLen, using
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| 42 | * FFTLengthPowerOfTwo as the template parameter. It then exposes
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| 43 | * FFTRealFixLen<FFTLengthPowerOfTwo>::do_fft via the calculateFFT
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| 44 | * function, thereby allowing an application to dynamically link
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| 45 | * against the FFTReal implementation.
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| 46 | *
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| 47 | * See http://ldesoras.free.fr/prod.html
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| 48 | */
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| 49 | class FFTREAL_EXPORT FFTRealWrapper
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| 50 | {
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| 51 | public:
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| 52 | FFTRealWrapper();
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| 53 | ~FFTRealWrapper();
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| 54 |
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| 55 | typedef float DataType;
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| 56 | void calculateFFT(DataType in[], const DataType out[]);
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| 57 |
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| 58 | private:
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| 59 | FFTRealWrapperPrivate* m_private;
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| 60 | };
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| 61 |
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| 62 | #endif // FFTREAL_WRAPPER_H
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| 63 |
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