IFFT_ooura.hxx

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/*
 * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#ifndef _IFFT_ooura_
#define _IFFT_ooura_

#include "IFFT_base.hxx"
#include "DataTypes.hxx"
#include "SpecTypeFlags.hxx"
#include "ErrDynamicType.hxx"

namespace CLAM {

        struct IFFTConfig;
        class Spectrum;
        class Audio;
        class ProcessingConfig;

        class IFFT_ooura: public IFFT_base
        {
                int *ip;
                TData *w;
                
                TData* ifftbuffer;
                SpecTypeFlags mComplexflags;

                /* IFFT possible execution states.
                */
                typedef enum {
                        sComplex, // We just need to read the complex array.
                        sOther // The complex array is not present.
                } IFFTState;

                IFFTState mState;
        
                bool IFFTConfigure();

                bool ConcreteConfigure(const ProcessingConfig&);

                // Memory Management (for work areas and stuff)

                void ReleaseMemory();

                void SetupMemory();

                // Output conversions

                void ComplexToIFFTOoura(const Spectrum &in) const;
                void OtherToIFFTOoura(const Spectrum &in) const;

                inline void CheckTypes(const Spectrum& in, const Audio &out) const;

        public:

                IFFT_ooura();

                IFFT_ooura(const IFFTConfig &c) throw(ErrDynamicType);

                ~IFFT_ooura();

                const char * GetClassName() const {return "IFFT_ooura";}

                // Execution methods

                bool Do();

                bool Do(const Spectrum& in, Audio &out) const;

                // Port interfaces.

                bool SetPrototypes(const Spectrum& in,const Audio &out);

                bool SetPrototypes();

                bool UnsetPrototypes();
                
                bool MayDisableExecution() const {return true;}

        };

};//namespace CLAM

#endif // _IFFT_numrec_