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59 lines
2.4 KiB
C++
59 lines
2.4 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 Edouard Griffiths, F4EXB //
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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 as version 3 of the License, or //
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// (at your option) 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 V3 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. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef _SDRBASE_FFTWFACTORY_H
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#define _SDRBASE_FFTWFACTORY_H
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#include <map>
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#include <vector>
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#include <QMutex>
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#include <QString>
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#include "export.h"
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#include "dsp/dsptypes.h"
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#include "fftengine.h"
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class SDRBASE_API FFTFactory {
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public:
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FFTFactory(const QString& fftwWisdomFileName);
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~FFTFactory();
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void preallocate(unsigned int minLog2Size, unsigned int maxLog2Size, unsigned int numberFFT, unsigned int numberInvFFT);
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unsigned int getEngine(unsigned int fftSize, bool inverse, FFTEngine **engine); //!< returns an engine sequence
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void releaseEngine(unsigned int fftSize, bool inverse, unsigned int engineSequence);
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private:
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struct AllocatedEngine
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{
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FFTEngine *m_engine;
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bool m_inUse;
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AllocatedEngine() :
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m_engine(nullptr),
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m_inUse(false)
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{}
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};
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QString m_fftwWisdomFileName;
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std::map<unsigned int, std::vector<AllocatedEngine>> m_fftEngineBySize;
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std::map<unsigned int, std::vector<AllocatedEngine>> m_invFFTEngineBySize;
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QMutex m_mutex;
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};
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#endif // _SDRBASE_FFTWFACTORY_H
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