| 1 | /*************************************************************************** |
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| 2 | ** |
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| 3 | ** Copyright (C) 2015 The Qt Company Ltd. |
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| 4 | ** Contact: http://www.qt.io/licensing/ |
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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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| 64 | |
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