FFTPlan.h

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/*******************************************************************************
* Copyright 2015-2016 Juan Francisco Crespo Galán
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
 
#pragma once

 
#include <complex>
#include <fftw3.h>
#include "Audaspace.h"
 
#include <memory>
#include <vector>

#define DEFAULT_N 4096
 
AUD_NAMESPACE_BEGIN

class AUD_API FFTPlan
{
private:
    int m_N;

    fftwf_plan m_fftPlanR2C;

    fftwf_plan m_fftPlanC2R;

    unsigned int m_bufferSize;
 
    // delete copy constructor and operator=
    FFTPlan(const FFTPlan&) = delete;
    FFTPlan& operator=(const FFTPlan&) = delete;
 
public:
    FFTPlan(double measureTime = 0);

    FFTPlan(int n, double measureTime = 0);
    ~FFTPlan();

    int getSize();

    void FFT(void* buffer);

    void IFFT(void* buffer);

    void* getBuffer();

    void freeBuffer(void* buffer);
};
 
AUD_NAMESPACE_END