using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace WindowsFormsApp1
{
    public class HGScannerLib
    {
        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibSaveImageParam
        {
            public UInt32 size;
            public UInt32 jpegQuality;
            public UInt32 tiffCompression;
            public UInt32 tiffJpegQuality;
            public Int32 ocr;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibDeviceIntValueList
        {
            public IntPtr value; // Int32指针
            public UInt32 count;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibDeviceEnumValueList
        {
            public IntPtr value; // UInt32指针
            public UInt32 count;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibDeviceDoubleValueList
        {
            public IntPtr value; // Double指针
            public UInt32 count;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibDeviceIntValueRange
        {
            public Int32 minValue;
            public Int32 maxValue;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibDeviceDoubleValueRange
        {
            public Double minValue;
            public Double maxValue;
        }

        [StructLayout(LayoutKind.Explicit, Pack = 4)]
        public struct HGLibDeviceParamType
        {
            [FieldOffset(0)] public Int32 intValue;
            [FieldOffset(0)] public UInt32 enumValue;
            [FieldOffset(0)] public Double doubleValue;
            [FieldOffset(0)] public Int32 boolValue;
        }

        [StructLayout(LayoutKind.Explicit, Pack = 4)]
        public struct HGLibDeviceParamRangeType
        {
            [FieldOffset(0)] public HGLibDeviceIntValueList intValueList;
            [FieldOffset(0)] public HGLibDeviceEnumValueList enumValueList;
            [FieldOffset(0)] public HGLibDeviceDoubleValueList doubleValueList;
            [FieldOffset(0)] public HGLibDeviceIntValueRange intValueRange;
            [FieldOffset(0)] public HGLibDeviceDoubleValueRange doubleValueRange;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibDeviceParam
        {
            public UInt32 option;
            public UInt32 type;
            public HGLibDeviceParamType typeValue;
            public UInt32 rangeType;
            public HGLibDeviceParamRangeType rangeTypeValue;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public struct HGLibDeviceParamGroup
        {
            public UInt32 group;
            public IntPtr param; // HGLibDeviceParam指针
            public UInt32 paramCount;
        }

        public delegate void HGLibDeviceHotPlugEventFunc(UInt32 evt, IntPtr deviceName, IntPtr param);
        public delegate void HGLibDeviceScanEventFunc(UIntPtr device, UInt32 evt, Int32 err, IntPtr info, IntPtr param);
        public delegate void HGLibDeviceScanImageFunc(UIntPtr device, UIntPtr image, IntPtr param);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_LoadImage")]
        public static extern UIntPtr HGLib_LoadImage(IntPtr filePath);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_SaveImage")]
        public static extern Int32 HGLib_SaveImage(UIntPtr image, IntPtr filePath, ref HGLibSaveImageParam saveParam);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_ReleaseImage")]
        public static extern Int32 HGLib_ReleaseImage(UIntPtr image);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_InitDevice")]
        public static extern Int32 HGLib_InitDevice(HGLibDeviceHotPlugEventFunc func, IntPtr param);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_DeinitDevice")]
        public static extern Int32 HGLib_DeinitDevice();

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_GetDeviceNameList")]
        public static extern IntPtr HGLib_GetDeviceNameList();

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_ReleaseDeviceNameList")]
        public static extern Int32 HGLib_ReleaseDeviceNameList(IntPtr deviceNameList);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_OpenDevice")]
        public static extern UIntPtr HGLib_OpenDevice(IntPtr deviceName);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_CloseDevice")]
        public static extern Int32 HGLib_CloseDevice(UIntPtr device);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_GetDeviceSN")]
        public static extern Int32 HGLib_GetDeviceSN(UIntPtr device, IntPtr sn, UInt32 maxLen);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_GetDeviceFWVersion")]
        public static extern Int32 HGLib_GetDeviceFWVersion(UIntPtr device, IntPtr fwVersion, UInt32 maxLen);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_SetDeviceParam")]
        public static extern Int32 HGLib_SetDeviceParam(UIntPtr device, UInt32 option, IntPtr data);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_GetDeviceParamGroupList")]
        public static extern IntPtr HGLib_GetDeviceParamGroupList(UIntPtr device, ref UInt32 count);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_GetDeviceParam")]
        public static extern IntPtr HGLib_GetDeviceParam(UIntPtr device, UInt32 option);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_ReleaseDeviceParamGroupList")]
        public static extern Int32 HGLib_ReleaseDeviceParamGroupList(IntPtr devParamGroup, UInt32 count);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_ReleaseDeviceParam")]
        public static extern Int32 HGLib_ReleaseDeviceParam(IntPtr devParam);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_ResetDeviceParam")]
        public static extern Int32 HGLib_ResetDeviceParam(UIntPtr device);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_DeviceIsPaperOn")]
        public static extern Int32 HGLib_DeviceIsPaperOn(UIntPtr device);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_StartDeviceScan")]
        public static extern Int32 HGLib_StartDeviceScan(UIntPtr device, HGLibDeviceScanEventFunc eventFunc, IntPtr eventParam,
            HGLibDeviceScanImageFunc imageFunc, IntPtr imageParam);

        [DllImport("CTSScannerLib.dll", EntryPoint = "HGLib_StopDeviceScan")]
        public static extern Int32 HGLib_StopDeviceScan(UIntPtr device);
    }
}