318 lines
11 KiB
C++
318 lines
11 KiB
C++
/*! \file pifft.h
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* \ingroup Math
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* \ingroup FFTW
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* \~\brief
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* \~english FFT, IFFT and Hilbert transformations
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* \~russian БПФ, ОБПФ и преобразования Гильберта
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*/
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/*
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PIP - Platform Independent Primitives
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Class for FFT, IFFT and Hilbert transformations
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Andrey Bychkov work.a.b@yandex.ru, Ivan Pelipenko peri4ko@yandex.ru
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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 Lesser General Public License as published by
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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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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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser 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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//! \defgroup FFTW FFTW
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//! \~\brief
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//! \~english Optimized FFT support via libfftw3
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//! \~russian Оптимизированный БПФ с помощью libfftw3
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//!
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//! \~\details
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//! \~english \section cmake_module_FFTW Building with CMake
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//! \~russian \section cmake_module_FFTW Сборка с использованием CMake
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//!
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//! \~\code
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//! find_package(PIP REQUIRED)
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//! target_link_libraries([target] PIP::FFTW)
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//! \endcode
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//!
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//! \~english \par Common
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//! \~russian \par Общее
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//!
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//! \~english
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//! These files provides FFT using [libfftw3](https://fftw.org/)
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//!
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//! \~russian
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//! Эти файлы обеспечивают БПФ с использованием [libfftw3](https://fftw.org/)
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//!
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//! \~\authors
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//! \~english
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//! Ivan Pelipenko peri4ko@yandex.ru;
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//! Andrey Bychkov work.a.b@yandex.ru;
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//! \~russian
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//! Иван Пелипенко peri4ko@yandex.ru;
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//! Андрей Бычков work.a.b@yandex.ru;
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//!
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#ifndef PIFFT_H
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#define PIFFT_H
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#include "pimathcomplex.h"
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#ifndef MICRO_PIP
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# include "pip_fftw_export.h"
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class PIP_EXPORT PIFFT_double {
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public:
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PIFFT_double();
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PIVector<complexd> * calcFFT(const PIVector<complexd> & val);
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PIVector<complexd> * calcFFT(const PIVector<double> & val);
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PIVector<complexd> * calcFFTinverse(const PIVector<complexd> & val);
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PIVector<complexd> * calcHilbert(const PIVector<double> & val);
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PIVector<double> getAmplitude() const;
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PIVector<double> getReal() const;
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PIVector<double> getImag() const;
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private:
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PIVector<complexd> result;
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typedef ptrdiff_t ae_int_t;
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struct ftplan {
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PIVector<int> plan;
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PIVector<double> precomputed;
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PIVector<double> tmpbuf;
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PIVector<double> stackbuf;
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};
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ftplan curplan;
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void fftc1d(const PIVector<complexd> & a, uint n);
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void fftc1r(const PIVector<double> & a, uint n);
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void fftc1dinv(const PIVector<complexd> & a, uint n);
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void createPlan(uint n);
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void ftbasegeneratecomplexfftplan(uint n, ftplan * plan);
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void ftbase_ftbasegenerateplanrec(int n,
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int tasktype,
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ftplan * plan,
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int * plansize,
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int * precomputedsize,
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int * planarraysize,
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int * tmpmemsize,
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int * stackmemsize,
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ae_int_t stackptr,
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int debugi = 0);
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void ftbase_ftbaseprecomputeplanrec(ftplan * plan, int entryoffset, ae_int_t stackptr);
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void ftbasefactorize(int n, int * n1, int * n2);
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void ftbase_ftbasefindsmoothrec(int n, int seed, int leastfactor, int * best);
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int ftbasefindsmooth(int n);
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void ftbaseexecuteplan(PIVector<double> * a, int aoffset, int n, ftplan * plan);
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void ftbaseexecuteplanrec(PIVector<double> * a, int aoffset, ftplan * plan, int entryoffset, ae_int_t stackptr);
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void ftbase_internalcomplexlintranspose(PIVector<double> * a, int m, int n, int astart, PIVector<double> * buf);
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void ftbase_ffticltrec(PIVector<double> * a, int astart, int astride, PIVector<double> * b, int bstart, int bstride, int m, int n);
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void ftbase_internalreallintranspose(PIVector<double> * a, int m, int n, int astart, PIVector<double> * buf);
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void ftbase_fftirltrec(PIVector<double> * a, int astart, int astride, PIVector<double> * b, int bstart, int bstride, int m, int n);
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void ftbase_ffttwcalc(PIVector<double> * a, int aoffset, int n1, int n2);
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};
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class PIP_EXPORT PIFFT_float {
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public:
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PIFFT_float();
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PIVector<complexf> * calcFFT(const PIVector<complexf> & val);
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PIVector<complexf> * calcFFT(const PIVector<float> & val);
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PIVector<complexf> * calcFFTinverse(const PIVector<complexf> & val);
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PIVector<complexf> * calcHilbert(const PIVector<float> & val);
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PIVector<float> getAmplitude() const;
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PIVector<float> getReal() const;
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PIVector<float> getImag() const;
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private:
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PIVector<complexf> result;
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typedef ptrdiff_t ae_int_t;
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struct ftplan {
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PIVector<int> plan;
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PIVector<float> precomputed;
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PIVector<float> tmpbuf;
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PIVector<float> stackbuf;
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};
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ftplan curplan;
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void fftc1d(const PIVector<complexf> & a, uint n);
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void fftc1r(const PIVector<float> & a, uint n);
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void fftc1dinv(const PIVector<complexf> & a, uint n);
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void createPlan(uint n);
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void ftbasegeneratecomplexfftplan(uint n, ftplan * plan);
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void ftbase_ftbasegenerateplanrec(int n,
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int tasktype,
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ftplan * plan,
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int * plansize,
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int * precomputedsize,
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int * planarraysize,
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int * tmpmemsize,
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int * stackmemsize,
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ae_int_t stackptr,
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int debugi = 0);
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void ftbase_ftbaseprecomputeplanrec(ftplan * plan, int entryoffset, ae_int_t stackptr);
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void ftbasefactorize(int n, int * n1, int * n2);
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void ftbase_ftbasefindsmoothrec(int n, int seed, int leastfactor, int * best);
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int ftbasefindsmooth(int n);
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void ftbaseexecuteplan(PIVector<float> * a, int aoffset, int n, ftplan * plan);
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void ftbaseexecuteplanrec(PIVector<float> * a, int aoffset, ftplan * plan, int entryoffset, ae_int_t stackptr);
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void ftbase_internalcomplexlintranspose(PIVector<float> * a, int m, int n, int astart, PIVector<float> * buf);
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void ftbase_ffticltrec(PIVector<float> * a, int astart, int astride, PIVector<float> * b, int bstart, int bstride, int m, int n);
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void ftbase_internalreallintranspose(PIVector<float> * a, int m, int n, int astart, PIVector<float> * buf);
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void ftbase_fftirltrec(PIVector<float> * a, int astart, int astride, PIVector<float> * b, int bstart, int bstride, int m, int n);
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void ftbase_ffttwcalc(PIVector<float> * a, int aoffset, int n1, int n2);
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};
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typedef PIFFT_double PIFFT;
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typedef PIFFT_double PIFFTd;
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typedef PIFFT_float PIFFTf;
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# ifndef CC_VC
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# define _PIFFTW_H(type) \
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class PIP_FFTW_EXPORT _PIFFTW_P_##type##_ { \
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public: \
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_PIFFTW_P_##type##_(); \
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~_PIFFTW_P_##type##_(); \
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const PIVector<complex<type>> & calcFFT(const PIVector<complex<type>> & in); \
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const PIVector<complex<type>> & calcFFTR(const PIVector<type> & in); \
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const PIVector<complex<type>> & calcFFTI(const PIVector<complex<type>> & in); \
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void preparePlan(int size, int op); \
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void * impl; \
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};
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_PIFFTW_H(float)
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_PIFFTW_H(double)
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_PIFFTW_H(ldouble)
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template<typename T>
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class PIFFTW {
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public:
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explicit PIFFTW() {
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p = 0;
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newP(p);
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}
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~PIFFTW() { deleteP(p); }
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inline const PIVector<complex<T>> & calcFFT(const PIVector<complex<T>> & in) { return PIVector<complex<T>>().resize(in.size()); }
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inline const PIVector<complex<T>> & calcFFT(const PIVector<T> & in) { return PIVector<complex<T>>().resize(in.size()); }
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inline const PIVector<complex<T>> & calcFFTinverse(const PIVector<complex<T>> & in) { return PIVector<complex<T>>().resize(in.size()); }
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enum FFT_Operation {
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foReal,
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foComplex,
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foInverse
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};
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inline void preparePlan(int size, FFT_Operation op) {}
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private:
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void operator=(const PIFFTW &);
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PIFFTW(const PIFFTW &);
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inline void newP(void *& _p) {}
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inline void deleteP(void *& _p) {}
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void * p;
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};
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template<>
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inline const PIVector<complex<float>> & PIFFTW<float>::calcFFT(const PIVector<complex<float>> & in) {
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return ((_PIFFTW_P_float_ *)p)->calcFFT(in);
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}
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template<>
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inline const PIVector<complex<float>> & PIFFTW<float>::calcFFT(const PIVector<float> & in) {
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return ((_PIFFTW_P_float_ *)p)->calcFFTR(in);
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}
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template<>
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inline const PIVector<complex<float>> & PIFFTW<float>::calcFFTinverse(const PIVector<complex<float>> & in) {
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return ((_PIFFTW_P_float_ *)p)->calcFFTI(in);
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}
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template<>
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inline void PIFFTW<float>::preparePlan(int size, FFT_Operation op) {
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((_PIFFTW_P_float_ *)p)->preparePlan(size, op);
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}
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template<>
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inline void PIFFTW<float>::newP(void *& _p) {
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_p = new _PIFFTW_P_float_();
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}
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template<>
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inline void PIFFTW<float>::deleteP(void *& _p) {
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if (_p) delete (_PIFFTW_P_float_ *)_p;
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_p = 0;
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}
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typedef PIFFTW<float> PIFFTWf;
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template<>
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inline const PIVector<complex<double>> & PIFFTW<double>::calcFFT(const PIVector<complex<double>> & in) {
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return ((_PIFFTW_P_double_ *)p)->calcFFT(in);
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}
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template<>
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inline const PIVector<complex<double>> & PIFFTW<double>::calcFFT(const PIVector<double> & in) {
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return ((_PIFFTW_P_double_ *)p)->calcFFTR(in);
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}
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template<>
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inline const PIVector<complex<double>> & PIFFTW<double>::calcFFTinverse(const PIVector<complex<double>> & in) {
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return ((_PIFFTW_P_double_ *)p)->calcFFTI(in);
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}
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template<>
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inline void PIFFTW<double>::preparePlan(int size, FFT_Operation op) {
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((_PIFFTW_P_double_ *)p)->preparePlan(size, op);
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}
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template<>
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inline void PIFFTW<double>::newP(void *& _p) {
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_p = new _PIFFTW_P_double_();
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}
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template<>
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inline void PIFFTW<double>::deleteP(void *& _p) {
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if (_p) delete (_PIFFTW_P_double_ *)_p;
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_p = 0;
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}
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typedef PIFFTW<double> PIFFTWd;
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template<>
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inline const PIVector<complex<ldouble>> & PIFFTW<ldouble>::calcFFT(const PIVector<complex<ldouble>> & in) {
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return ((_PIFFTW_P_ldouble_ *)p)->calcFFT(in);
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}
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template<>
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inline const PIVector<complex<ldouble>> & PIFFTW<ldouble>::calcFFT(const PIVector<ldouble> & in) {
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return ((_PIFFTW_P_ldouble_ *)p)->calcFFTR(in);
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}
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template<>
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inline const PIVector<complex<ldouble>> & PIFFTW<ldouble>::calcFFTinverse(const PIVector<complex<ldouble>> & in) {
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return ((_PIFFTW_P_ldouble_ *)p)->calcFFTI(in);
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}
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template<>
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inline void PIFFTW<ldouble>::preparePlan(int size, FFT_Operation op) {
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((_PIFFTW_P_ldouble_ *)p)->preparePlan(size, op);
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}
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template<>
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inline void PIFFTW<ldouble>::newP(void *& _p) {
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_p = new _PIFFTW_P_ldouble_();
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}
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template<>
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inline void PIFFTW<ldouble>::deleteP(void *& _p) {
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if (_p) delete (_PIFFTW_P_ldouble_ *)_p;
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_p = 0;
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}
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typedef PIFFTW<ldouble> PIFFTWld;
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# endif
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#endif // MICRO_PIP
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#endif // PIFFT_H
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