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 */

#include "precomp.hpp"
#include <opencv2/ximgproc.hpp>

namespace cv
{
namespace ximgproc
{
    void rollingGuidanceFilter(InputArray src_, OutputArray dst_, int d,
                               double sigmaColor, double sigmaSpace,  int numOfIter, int borderType)
    {
        CV_Assert(!src_.empty());

        Mat guidance = src_.getMat();
        Mat src = src_.getMat();

        CV_Assert(src.size() == guidance.size());
        CV_Assert(src.depth() == guidance.depth() && (src.depth() == CV_8U || src.depth() == CV_32F) );

        if (sigmaColor <= 0)
            sigmaColor = 1;
        if (sigmaSpace <= 0)
            sigmaSpace = 1;

        dst_.create(src.size(), src.type());
        Mat dst = dst_.getMat();

        if (src.data == guidance.data)
            guidance = guidance.clone();
        if (dst.data == src.data)
            src = src.clone();

        int srcCnNum = src.channels();

        if (srcCnNum == 1 || srcCnNum == 3)
        {
            while(numOfIter--){
                jointBilateralFilter(guidance, src, guidance, d, sigmaColor, sigmaSpace, borderType);
            }
            guidance.copyTo(dst_);
        }
        else
        {
            CV_Error(Error::BadNumChannels, "Unsupported number of channels");
        }
    }
}
}
