IFFT_fftw3.hxx

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00001 /*
00002  * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
00003  *                         UNIVERSITAT POMPEU FABRA
00004  *
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  *
00020  */
00021 
00022 
00023 #ifndef _IFFT_fftw3_
00024 #define _IFFT_fftw3_
00025 
00026 #include "IFFT_base.hxx"
00027 #include "ErrDynamicType.hxx"
00028 #include "SpectrumConfig.hxx"
00029 
00030 namespace CLAM {
00031 
00035         class IFFT_fftw3: public IFFT_base
00036         {
00037                 struct Implementation;
00038                 Implementation * _fftw3;
00039 
00040                 /* IFFT possible execution states.
00041                  */
00042                 typedef enum {
00043                         sComplex, // We just need to read the complex array.
00044                         sOther // The complex array is not present.
00045                 } IFFTState;
00046 
00049                 IFFTState mState;
00050 
00051                 void DefaultInit();
00052 
00053                 inline void CheckTypes(const Spectrum& in, const Audio &out) const;
00054 
00055                 // Output conversions
00056 
00063                 inline void ComplexToRIFFTW(const Spectrum &in) const;
00064                 inline void OtherToRIFFTW(const Spectrum &in) const;
00065                 void ReleaseMemory();
00066                 void SetupMemory();
00067 
00071                 bool ConcreteConfigure(const ProcessingConfig&);
00072 
00073         public:
00074 
00075                 IFFT_fftw3(const IFFTConfig &c=IFFTConfig());
00076                 ~IFFT_fftw3();
00077                 const char * GetClassName() const {return "IFFT_fftw3";}
00078 
00079                 bool Do();
00080                 bool Do(const Spectrum& in, Audio &out) const;
00081                 bool MayDisableExecution() const {return true;}
00082 
00083                 // Port interfaces.
00084                 bool SetPrototypes(const Spectrum& in,const Audio &out);
00085                 bool SetPrototypes();
00086                 bool UnsetPrototypes();
00087 
00088         };
00089 
00090 }
00091 
00092 #endif // _IFFT_fftw3_
00093