98 lines
3.0 KiB
C#
98 lines
3.0 KiB
C#
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namespace SHH.CameraSdk.HikFeatures;
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/// <summary>
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/// 海康时间同步组件
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/// </summary>
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public class HikTimeSyncProvider : ITimeSyncFeature
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{
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private readonly IHikContext _context;
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public HikTimeSyncProvider(IHikContext context)
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{
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_context = context;
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}
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public async Task<DateTime> GetTimeAsync()
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{
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// 1. 获取句柄
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int userId = _context.GetUserId();
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if (userId < 0) throw new InvalidOperationException("设备未登录");
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return await Task.Run(() =>
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{
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uint returned = 0;
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uint size = (uint)Marshal.SizeOf(typeof(HikNativeMethods.NET_DVR_TIME));
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IntPtr ptr = Marshal.AllocHGlobal((int)size);
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try
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{
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// 调用 SDK: NET_DVR_GET_TIME (命令号 118)
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bool result = HikNativeMethods.NET_DVR_GetDVRConfig(
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userId,
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HikNativeMethods.NET_DVR_GET_TIMECFG,
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0,
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ptr,
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size,
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ref returned);
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if (!result)
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{
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var err = HikNativeMethods.NET_DVR_GetLastError();
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throw new Exception($"获取时间失败, 错误码: {err}");
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}
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var t = Marshal.PtrToStructure<HikNativeMethods.NET_DVR_TIME>(ptr);
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return new DateTime((int)t.dwYear, (int)t.dwMonth, (int)t.dwDay, (int)t.dwHour, (int)t.dwMinute, (int)t.dwSecond);
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}
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finally
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{
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Marshal.FreeHGlobal(ptr);
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}
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});
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}
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public async Task SetTimeAsync(DateTime time)
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{
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int userId = _context.GetUserId();
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if (userId < 0) throw new InvalidOperationException("设备未登录");
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await Task.Run(() =>
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{
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var t = new HikNativeMethods.NET_DVR_TIME
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{
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dwYear = (uint)time.Year,
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dwMonth = (uint)time.Month,
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dwDay = (uint)time.Day,
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dwHour = (uint)time.Hour,
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dwMinute = (uint)time.Minute,
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dwSecond = (uint)time.Second
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};
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uint size = (uint)Marshal.SizeOf(t);
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IntPtr ptr = Marshal.AllocHGlobal((int)size);
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try
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{
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Marshal.StructureToPtr(t, ptr, false);
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// 调用 SDK: NET_DVR_SET_TIME (命令号 119)
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bool result = HikNativeMethods.NET_DVR_SetDVRConfig(
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userId,
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HikNativeMethods.NET_DVR_SET_TIMECFG,
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0,
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ptr,
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size);
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if (!result)
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{
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var err = HikNativeMethods.NET_DVR_GetLastError();
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throw new Exception($"设置时间失败, 错误码: {err}");
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}
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}
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finally
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{
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Marshal.FreeHGlobal(ptr);
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}
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});
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}
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}
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