using System;
using System.Runtime.InteropServices;
using System.Text;

namespace AutoFocusTool.Camera
{
    /// <summary>
    /// Microview MVC2000 USB2.0 相机 SDK 的 P/Invoke 声明。
    /// DLL 路径相对工作目录：DependFile\ccd\mvcapi.dll（随生成复制到输出目录）。
    /// 仅保留自动对焦测试程序需要的函数，抄自原工程 MVCAPI.cs。
    /// </summary>
    public static class MVCAPI
    {
        public delegate void LPMV_CALLBACK2(IntPtr lpParam, IntPtr lpUser);

        public const short ResSuccess = 0x0000;

        public const int WS_CHILD = 0x40000000;
        public const int WS_VISIBLE = 0x10000000;

        private const string DLL = @"DependFile\ccd\mvcapi.dll";

        /// <summary>初始化第 index 台型号为 pFilterName 的相机，返回 0 成功，得句柄 hImager</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2Init(string pFilterName, out int index, ref CapInfoStruct pCapInfo, out IntPtr hImager);

        /// <summary>读取相机序列号</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2GetSerial(IntPtr hImager, StringBuilder number);

        /// <summary>卸载相机</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2Uninit(ref IntPtr hImager);

        /// <summary>设置采集模式：nMode 0=拍照(单帧) 1=实时图像</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2SetOpMode(IntPtr hImager, byte nMode, bool bStrobe);

        /// <summary>下发部分采集参数（曝光、增益）</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2SetPartOfCapInfo(IntPtr hImager, ref CapInfoStruct pCapInfo);

        /// <summary>抓取一帧 RGB 图，写入 pDest（width*height*3 字节，24bpp）</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2GetRgbData(IntPtr hImager, ref CapInfoStruct pCapInfo, IntPtr pDest);

        /// <summary>抓取一帧 Raw 数据，写入 pCapInfo.Buffer</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2GetRawData(IntPtr hImager, ref CapInfoStruct pCapInfo);

        /// <summary>Raw → RGB 去马赛克</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2ConvertRawToRgb(IntPtr hImager, IntPtr pSrc, int width, int height, IntPtr pDest);

        /// <summary>获取帧率</summary>
        [DllImport(DLL)]
        public static extern int MV_Usb2GetFrameRate(IntPtr hImager, out float nRate);
    }
}