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//                          License Agreement
//                For Open Source Computer Vision Library
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#include "precomp.hpp"

namespace cv
{

///////////////////////////////////////////////////////////////////////////////////////////////////////////
    
static Algorithm* createSURF()
{
    return new SURF;
}

static AlgorithmInfo& surf_info()
{
    static AlgorithmInfo surf_info_var("Feature2D.SURF", createSURF);
    return surf_info_var;
}

static AlgorithmInfo& surf_info_auto = surf_info();

AlgorithmInfo* SURF::info() const
{
    static volatile bool initialized = false;
    if( !initialized )
    {
        SURF obj;
        surf_info().addParam(obj, "hessianThreshold", obj.hessianThreshold);
        surf_info().addParam(obj, "nOctaves", obj.nOctaves);
        surf_info().addParam(obj, "nOctaveLayers", obj.nOctaveLayers);
        surf_info().addParam(obj, "extended", obj.extended);
        surf_info().addParam(obj, "upright", obj.upright);
        
        initialized = true;
    }
    return &surf_info();
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////

static Algorithm* createSIFT() { return new SIFT; }

static AlgorithmInfo& sift_info()
{
    static AlgorithmInfo sift_info_var("Feature2D.SIFT", createSIFT);
    return sift_info_var;
}

static AlgorithmInfo& sift_info_auto = sift_info();

AlgorithmInfo* SIFT::info() const
{
    static volatile bool initialized = false;
    if( !initialized )
    {
        SIFT obj;
        sift_info().addParam(obj, "nFeatures", obj.nfeatures);
        sift_info().addParam(obj, "nOctaveLayers", obj.nOctaveLayers);
        sift_info().addParam(obj, "contrastThreshold", obj.contrastThreshold);
        sift_info().addParam(obj, "edgeThreshold", obj.edgeThreshold);
        sift_info().addParam(obj, "sigma", obj.sigma);
        
        initialized = true;
    }
    return &sift_info();
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////    
    
bool initModule_nonfree(void)
{
    Ptr<Algorithm> sift = createSIFT(), surf = createSURF();
    return sift->info() != 0 && surf->info() != 0;
}

}