/* ============================================================
 *
 * This file is a part of digiKam project
 * http://www.digikam.org
 *
 * Date        : 2005-05-25
 * Description : Oil Painting threaded image filter.
 * 
 * Copyright (C) 2005-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * Copyright (C) 2006-2007 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * 
 * 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, 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.
 * 
 * ============================================================ */

#ifndef OILPAINT_H
#define OILPAINT_H

// Digikam includes.

#include "dimgthreadedfilter.h"

namespace DigikamOilPaintImagesPlugin
{

class OilPaint : public Digikam::DImgThreadedFilter
{

public:

    OilPaint(Digikam::DImg *orgImage, TQObject *parent=0, int brushSize=1, int smoothness=30);

    ~OilPaint(){};

private:  

    virtual void filterImage(void);

    void oilpaintImage(Digikam::DImg &orgImage, Digikam::DImg &destImage, int BrushSize, int Smoothness);

    Digikam::DColor MostFrequentColor (Digikam::DImg &src,
                            int X, int Y, int Radius, int Intensity);

    // Function to calculate the color intensity and return the luminance (Y)
    // component of YIQ color model.
    inline double GetIntensity(uint Red, uint Green, uint Blue)
           { return Red * 0.3 + Green * 0.59 + Blue * 0.11; };

private:  

    uchar *m_intensityCount;

    int    m_brushSize;
    int    m_smoothness;

    uint  *m_averageColorR;
    uint  *m_averageColorG;
    uint  *m_averageColorB;
};

}  // NameSpace DigikamOilPaintImagesPlugin

#endif /* OILPAINT_H */