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//
//  libavg - Media Playback Engine. 
//  Copyright (C) 2003-2014 Ulrich von Zadow
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library 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
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//  Current versions can be found at www.libavg.de
//

#ifndef _GPUBandpassFilter_H_
#define _GPUBandpassFilter_H_

#include "../api.h"
#include "GPUFilter.h"
#include "GPUBlurFilter.h"
#include "Bitmap.h"

namespace avg {

class AVG_API GPUBandpassFilter: public GPUFilter
{
public:
    GPUBandpassFilter(const IntPoint& size, PixelFormat pfSrc, float min, float max, 
            float postScale, bool bInvert, bool bStandalone=true);
    virtual ~GPUBandpassFilter();

    virtual void applyOnGPU(GLTexturePtr pSrcTex);

private:
    float m_PostScale;
    bool m_bInvert;

    GPUBlurFilter m_MinFilter;
    GPUBlurFilter m_MaxFilter;

    IntGLShaderParamPtr m_pMinTexParam;
    IntGLShaderParamPtr m_pMaxTexParam;
    FloatGLShaderParamPtr m_pPostScaleParam;
    IntGLShaderParamPtr m_pInvertParam;
};

}
#endif