filter.h

/*
 * This file is part of Copiste.
 *
 * Copiste 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 3 of the License, or
 * (at your option) any later version.
 *
 *  Copiste 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 Copiste.  If not, see <http://www.gnu.org/licenses/>.
 */


#ifndef INCLUDED_FILTERH
#define INCLUDED_FILTERH

#include "features/extractor.h"
#include <vector>

using namespace std;

class Filter : public FeatureExtractor
{
    public:
        Filter() : mExtr(0) { ; }

        virtual ~Filter() { ; }

        FeatureExtractor* bind(FeatureExtractor* extr);

        bool extract(std::deque<uint16_t> data, int size = 0);

        virtual void transform(vector<float> data) = 0;

        virtual float min()
        {
                return (mExtr ? mExtr->min() : 0);
        }

        virtual float max()
        {
                return (mExtr ? mExtr->max() : 1);
        }

    protected:
        virtual void parentChanged() { ; }

        FeatureExtractor* mExtr;
};

#endif