IFFT_base.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_base_
#define _IFFT_base_

#include <typeinfo> // for bad_cast definition
#include "Processing.hxx"
#include "InPort.hxx"
#include "AudioOutPort.hxx"
#include "ProcessingData.hxx"
#include "DataTypes.hxx"
#include "Spectrum.hxx"

#include "IFFTConfig.hxx"

namespace CLAM {

    class Audio;
    class Spectrum;

    class IFFT_base: public Processing
    {
    protected:
        enum {CLAM_DEFAULT_IFFT_SIZE=1024};
                
        IFFTConfig mConfig;
        int mSize;

        InPort<Spectrum> mInput;
        AudioOutPort   mOutput;

        // Control change callback function
        void ChangeSize(int n);
        int GetSize() {return mSize;}
                
        virtual bool ConcreteConfigure(const ProcessingConfig&) = 0;

    public:

        IFFT_base();

        virtual ~IFFT_base();

        const char *GetClassName() const {return "IFFT";}
                
        virtual const ProcessingConfig &GetConfig() const { return mConfig;}

        virtual bool Do(void) = 0;

        virtual bool Do(const Spectrum& in, Audio &out) const = 0;

        // Input/Output configuration methods

        virtual bool SetPrototypes(const Spectrum& in,const Audio &out) = 0;

        virtual bool SetPrototypes() {return false;}

        virtual bool UnsetPrototypes() {return false;}

        // Enable/Disable methods. Maybe we should not be deriving
        // these ones in IFFT subclasses. (IFFT implementations will
        // probably be always memoryless.

        virtual bool MayDisableExecution() const {return false;}

    };
}

#endif // _IFFT_base_