增加大华驱动

SHH.CameraSdk/Drivers/DaHua/DahuaPlaySDK.cs

@@ -0,0 +1,52 @@
+using System.Runtime.InteropServices;
+
+namespace SHH.CameraSdk;
+
+/// <summary>
+/// 大华 PlaySDK 核心接口封装 (play.dll)
+/// </summary>
+public static class DahuaPlaySDK
+{
+    private const string DLL_PATH = "Drivers\\Dahua\\play.dll";
+
+    // 解码回调委托
+    public delegate void DECCBFUN(int nPort, IntPtr pBuf, int nSize, ref FRAME_INFO pFrameInfo, IntPtr nUser, int nReserved2);
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct FRAME_INFO
+    {
+        public int nWidth;
+        public int nHeight;
+        public int nStamp;
+        public int nType;
+        public int nFrameRate;
+        public uint dwFrameNum;
+    }
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_GetFreePort(ref int plPort);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_ReleasePort(int nPort);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_OpenStream(int nPort, IntPtr pFileHead, uint nSize, uint nBufPoolSize);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_CloseStream(int nPort);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_Play(int nPort, IntPtr hWnd);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_Stop(int nPort);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_InputData(int nPort, IntPtr pBuf, uint nSize);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_SetDecCallBack(int nPort, DECCBFUN DecCBFun);
+
+    [DllImport(DLL_PATH)]
+    public static extern bool PLAY_SetStreamOpenMode(int nPort, uint nMode);
+}