using OpenCvSharp;
using System;

namespace OpenCV
{
    class OpenCVClass : IDisposable
    {
        IplImage gray;
        IplImage inversion;
        IplImage bin;
        IplImage blur;
        IplImage zoomin;
        IplImage zoomout;

        public IplImage GrayScale(IplImage src)
        {
            gray = new IplImage(src.Size, BitDepth.U8, 1);
            Cv.CvtColor(src, gray, ColorConversion.BgrToGray);
            return gray;
        }

        public IplImage InversionImage(IplImage src)
        {
            inversion = new IplImage(src.Size, BitDepth.U8, 3);
            Cv.Not(src, inversion);
            return inversion;
        }

        public IplImage Binary(IplImage src)
        {
            bin = GrayScale(src);
            Cv.Threshold(bin, bin, 150, 255, ThresholdType.Binary);
            return bin;
        }

        public IplImage Blur(IplImage src)
        {
            blur = new IplImage(src.Size, BitDepth.U8, 3);
            Cv.Smooth(src, blur, SmoothType.Blur, 9); // param1은 홀수, 중간 픽셀 선택을 위함
            return blur;
        }

        public IplImage ZoomIn(IplImage src)
        {
            zoomin = new IplImage(new CvSize(src.Width * 2, src.Height * 2) , BitDepth.U8, 3);
            Cv.PyrUp(src, zoomin, CvFilter.Gaussian5x5);
            return zoomin;
        }

        public IplImage ZoomOut(IplImage src)
        {
            zoomout = new IplImage(new CvSize(src.Width / 2, src.Height / 2), BitDepth.U8, 3);
            Cv.PyrDown(src, zoomout, CvFilter.Gaussian5x5);
            return zoomout;
        }

        public void Dispose()
        {
            if (gray != null)
                Cv.ReleaseImage(gray);
            if (inversion != null)
                Cv.ReleaseImage(inversion);
            if (bin != null)
                Cv.ReleaseImage(bin);
            if (blur != null)
                Cv.ReleaseImage(blur);
            if (zoomin != null)
                Cv.ReleaseImage(zoomin);
            if (zoomout != null)
                Cv.ReleaseImage(zoomout);
        }
    }
}