using System;


namespace VideoStatusInspectorCSLib
{

    /// <summary>
    /// 数据区用指针表示的图像
    /// </summary>
    public class IntptrRawImage
    {
        private IntPtr _dataPointer;
        private int _width;
        private int _height;
        private readonly int _bytesPerPixel = 0;
        private readonly EnumColorType _colorType = EnumColorType.Gray8;

        /// <summary>
        /// 数据区首地址
        /// </summary>
        public IntPtr DataPointer { get => _dataPointer; }

        /// <summary>
        /// 图像宽度
        /// </summary>
        public int Width { get => _width; }

        /// <summary>
        /// 图像高度
        /// </summary>
        public int Height { get => _height; }

        /// <summary>
        /// 一个像素用几个Byte来表示
        /// 如：8位灰度图，则BytesPerPixel=1，24位RGB图像，则BytesPerPixel=3
        /// </summary>
        public int BytesPerPixel { get => _bytesPerPixel; }

        /// <summary>
        /// 图像的色彩类型
        /// </summary>
        public EnumColorType ColorType { get => _colorType; }

        /// <summary>
        /// 构造函数
        /// </summary>
        public IntptrRawImage(EnumColorType colorType = EnumColorType.Gray8)
        {
            _dataPointer = IntPtr.Zero;
            _width = 0;
            _height = 0;
            _colorType = colorType;
            int bytesPerPixel = RawImage.GetBytesPerPixel(colorType);
            _bytesPerPixel = bytesPerPixel;
        }

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="data"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        /// <param name="channel"></param>
        public IntptrRawImage(IntPtr dataPointer, int width, int height, EnumColorType colorType)
        {
            _dataPointer = dataPointer;
            _width = width;
            _height = height;
            _colorType = colorType;
            int bytesPerPixel = RawImage.GetBytesPerPixel(colorType);
            _bytesPerPixel = bytesPerPixel;
        }

    }
}