using OpenCVForUnity.CoreModule;
using OpenCVForUnity.UtilsModule;
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;

namespace OpenCVForUnity.ImgcodecsModule {
    // C++: class Imgcodecs
    //javadoc: Imgcodecs

    public class Imgcodecs {

        // C++: enum ImwritePAMFlags
        public const int IMWRITE_PAM_FORMAT_NULL = 0;
        public const int IMWRITE_PAM_FORMAT_BLACKANDWHITE = 1;
        public const int IMWRITE_PAM_FORMAT_GRAYSCALE = 2;
        public const int IMWRITE_PAM_FORMAT_GRAYSCALE_ALPHA = 3;
        public const int IMWRITE_PAM_FORMAT_RGB = 4;
        public const int IMWRITE_PAM_FORMAT_RGB_ALPHA = 5;
        // C++: enum ImwritePNGFlags
        public const int IMWRITE_PNG_STRATEGY_DEFAULT = 0;
        public const int IMWRITE_PNG_STRATEGY_FILTERED = 1;
        public const int IMWRITE_PNG_STRATEGY_HUFFMAN_ONLY = 2;
        public const int IMWRITE_PNG_STRATEGY_RLE = 3;
        public const int IMWRITE_PNG_STRATEGY_FIXED = 4;
        // C++: enum ImwriteFlags
        public const int IMWRITE_JPEG_QUALITY = 1;
        public const int IMWRITE_JPEG_PROGRESSIVE = 2;
        public const int IMWRITE_JPEG_OPTIMIZE = 3;
        public const int IMWRITE_JPEG_RST_INTERVAL = 4;
        public const int IMWRITE_JPEG_LUMA_QUALITY = 5;
        public const int IMWRITE_JPEG_CHROMA_QUALITY = 6;
        public const int IMWRITE_PNG_COMPRESSION = 16;
        public const int IMWRITE_PNG_STRATEGY = 17;
        public const int IMWRITE_PNG_BILEVEL = 18;
        public const int IMWRITE_PXM_BINARY = 32;
        public const int IMWRITE_EXR_TYPE = (3 << 4) + 0;
        public const int IMWRITE_WEBP_QUALITY = 64;
        public const int IMWRITE_PAM_TUPLETYPE = 128;
        public const int IMWRITE_TIFF_RESUNIT = 256;
        public const int IMWRITE_TIFF_XDPI = 257;
        public const int IMWRITE_TIFF_YDPI = 258;
        // C++: enum ImwriteEXRTypeFlags
        public const int IMWRITE_EXR_TYPE_HALF = 1;
        public const int IMWRITE_EXR_TYPE_FLOAT = 2;
        // C++: enum ImreadModes
        public const int IMREAD_UNCHANGED = -1;
        public const int IMREAD_GRAYSCALE = 0;
        public const int IMREAD_COLOR = 1;
        public const int IMREAD_ANYDEPTH = 2;
        public const int IMREAD_ANYCOLOR = 4;
        public const int IMREAD_LOAD_GDAL = 8;
        public const int IMREAD_REDUCED_GRAYSCALE_2 = 16;
        public const int IMREAD_REDUCED_COLOR_2 = 17;
        public const int IMREAD_REDUCED_GRAYSCALE_4 = 32;
        public const int IMREAD_REDUCED_COLOR_4 = 33;
        public const int IMREAD_REDUCED_GRAYSCALE_8 = 64;
        public const int IMREAD_REDUCED_COLOR_8 = 65;
        public const int IMREAD_IGNORE_ORIENTATION = 128;
        //
        // C++:  Mat cv::imdecode(Mat buf, int flags)
        //

        //javadoc: imdecode(buf, flags)
        public static Mat imdecode(Mat buf, int flags) {
            if (buf != null) buf.ThrowIfDisposed();
#if (UNITY_ANDROID && !UNITY_EDITOR)

            Mat retVal = new Mat(imgcodecs_Imgcodecs_imdecode_10(buf.nativeObj, flags));

            return retVal;
#else
            return null;
#endif
        }


        //
        // C++:  Mat cv::imread(String filename, int flags = IMREAD_COLOR)
        //

        //javadoc: imread(filename, flags)
        public static Mat imread(string filename, int flags) {
#if (UNITY_ANDROID && !UNITY_EDITOR)

            Mat retVal = new Mat(imgcodecs_Imgcodecs_imread_10(filename, flags));

            return retVal;
#else
            return null;
#endif
        }

        //javadoc: imread(filename)
        public static Mat imread(string filename) {
#if (UNITY_ANDROID && !UNITY_EDITOR)

            Mat retVal = new Mat(imgcodecs_Imgcodecs_imread_11(filename));

            return retVal;
#else
            return null;
#endif
        }


        //
        // C++:  bool cv::haveImageReader(String filename)
        //

        //javadoc: haveImageReader(filename)
        public static bool haveImageReader(string filename) {
#if (UNITY_ANDROID && !UNITY_EDITOR)

            bool retVal = imgcodecs_Imgcodecs_haveImageReader_10(filename);

            return retVal;
#else
            return false;
#endif
        }


        //
        // C++:  bool cv::haveImageWriter(String filename)
        //

        //javadoc: haveImageWriter(filename)
        public static bool haveImageWriter(string filename) {
#if (UNITY_ANDROID && !UNITY_EDITOR)

            bool retVal = imgcodecs_Imgcodecs_haveImageWriter_10(filename);

            return retVal;
#else
            return false;
#endif
        }


        //
        // C++:  bool cv::imencode(String ext, Mat img, vector_uchar& buf, vector_int _params = std::vector<int>())
        //

        //javadoc: imencode(ext, img, buf, _params)
        public static bool imencode(string ext, Mat img, MatOfByte buf, MatOfInt _params) {
            if (img != null) img.ThrowIfDisposed();
            if (buf != null) buf.ThrowIfDisposed();
            if (_params != null) _params.ThrowIfDisposed();
#if (UNITY_ANDROID && !UNITY_EDITOR)
            Mat buf_mat = buf;
            Mat _params_mat = _params;
            bool retVal = imgcodecs_Imgcodecs_imencode_10(ext, img.nativeObj, buf_mat.nativeObj, _params_mat.nativeObj);

            return retVal;
#else
            return false;
#endif
        }

        //javadoc: imencode(ext, img, buf)
        public static bool imencode(string ext, Mat img, MatOfByte buf) {
            if (img != null) img.ThrowIfDisposed();
            if (buf != null) buf.ThrowIfDisposed();
#if (UNITY_ANDROID && !UNITY_EDITOR)
            Mat buf_mat = buf;
            bool retVal = imgcodecs_Imgcodecs_imencode_11(ext, img.nativeObj, buf_mat.nativeObj);

            return retVal;
#else
            return false;
#endif
        }


        //
        // C++:  bool cv::imreadmulti(String filename, vector_Mat& mats, int flags = IMREAD_ANYCOLOR)
        //

        //javadoc: imreadmulti(filename, mats, flags)
        public static bool imreadmulti(string filename, List<Mat> mats, int flags) {
#if (UNITY_ANDROID && !UNITY_EDITOR)
            Mat mats_mat = new Mat();
            bool retVal = imgcodecs_Imgcodecs_imreadmulti_10(filename, mats_mat.nativeObj, flags);
            Converters.Mat_to_vector_Mat(mats_mat, mats);
            mats_mat.release();
            return retVal;
#else
            return false;
#endif
        }

        //javadoc: imreadmulti(filename, mats)
        public static bool imreadmulti(string filename, List<Mat> mats) {
#if (UNITY_ANDROID && !UNITY_EDITOR)
            Mat mats_mat = new Mat();
            bool retVal = imgcodecs_Imgcodecs_imreadmulti_11(filename, mats_mat.nativeObj);
            Converters.Mat_to_vector_Mat(mats_mat, mats);
            mats_mat.release();
            return retVal;
#else
            return false;
#endif
        }


        //
        // C++:  bool cv::imwrite(String filename, Mat img, vector_int _params = std::vector<int>())
        //

        //javadoc: imwrite(filename, img, _params)
        public static bool imwrite(string filename, Mat img, MatOfInt _params) {
            if (img != null) img.ThrowIfDisposed();
            if (_params != null) _params.ThrowIfDisposed();
#if (UNITY_ANDROID && !UNITY_EDITOR)
            Mat _params_mat = _params;
            bool retVal = imgcodecs_Imgcodecs_imwrite_10(filename, img.nativeObj, _params_mat.nativeObj);

            return retVal;
#else
            return false;
#endif
        }

        //javadoc: imwrite(filename, img)
        public static bool imwrite(string filename, Mat img) {
            if (img != null) img.ThrowIfDisposed();
#if (UNITY_ANDROID && !UNITY_EDITOR)

            bool retVal = imgcodecs_Imgcodecs_imwrite_11(filename, img.nativeObj);

            return retVal;
#else
            return false;
#endif
        }


#if (UNITY_ANDROID && !UNITY_EDITOR)
        const string LIBNAME = "opencvforunity";



        // C++:  Mat cv::imdecode(Mat buf, int flags)
        [DllImport(LIBNAME)]
        private static extern IntPtr imgcodecs_Imgcodecs_imdecode_10(IntPtr buf_nativeObj, int flags);

        // C++:  Mat cv::imread(String filename, int flags = IMREAD_COLOR)
        [DllImport(LIBNAME)]
        private static extern IntPtr imgcodecs_Imgcodecs_imread_10(string filename, int flags);
        [DllImport(LIBNAME)]
        private static extern IntPtr imgcodecs_Imgcodecs_imread_11(string filename);

        // C++:  bool cv::haveImageReader(String filename)
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_haveImageReader_10(string filename);

        // C++:  bool cv::haveImageWriter(String filename)
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_haveImageWriter_10(string filename);

        // C++:  bool cv::imencode(String ext, Mat img, vector_uchar& buf, vector_int _params = std::vector<int>())
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_imencode_10(string ext, IntPtr img_nativeObj, IntPtr buf_mat_nativeObj, IntPtr _params_mat_nativeObj);
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_imencode_11(string ext, IntPtr img_nativeObj, IntPtr buf_mat_nativeObj);

        // C++:  bool cv::imreadmulti(String filename, vector_Mat& mats, int flags = IMREAD_ANYCOLOR)
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_imreadmulti_10(string filename, IntPtr mats_mat_nativeObj, int flags);
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_imreadmulti_11(string filename, IntPtr mats_mat_nativeObj);

        // C++:  bool cv::imwrite(String filename, Mat img, vector_int _params = std::vector<int>())
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_imwrite_10(string filename, IntPtr img_nativeObj, IntPtr _params_mat_nativeObj);
        [DllImport(LIBNAME)]
        private static extern bool imgcodecs_Imgcodecs_imwrite_11(string filename, IntPtr img_nativeObj);

#endif
    }
}