71 lines
2.4 KiB
C#
71 lines
2.4 KiB
C#
namespace SHH.CameraSdk.HikFeatures;
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public class HikPtzProvider : IPtzFeature
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{
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private readonly IHikContext _context;
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public HikPtzProvider(IHikContext context)
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{
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_context = context;
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}
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public async Task PtzControlAsync(PtzAction action, bool stop, int speed)
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{
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int userId = _context.GetUserId();
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if (userId < 0) throw new InvalidOperationException("设备离线");
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// 1. 映射指令
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uint hikCommand = action switch
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{
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PtzAction.Up => HikNativeMethods.TILT_UP,
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PtzAction.Down => HikNativeMethods.TILT_DOWN,
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PtzAction.Left => HikNativeMethods.PAN_LEFT,
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PtzAction.Right => HikNativeMethods.PAN_RIGHT,
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PtzAction.ZoomIn => HikNativeMethods.ZOOM_IN,
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PtzAction.ZoomOut => HikNativeMethods.ZOOM_OUT,
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PtzAction.FocusNear => HikNativeMethods.FOCUS_NEAR,
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PtzAction.FocusFar => HikNativeMethods.FOCUS_FAR,
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PtzAction.IrisOpen => HikNativeMethods.IRIS_OPEN,
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PtzAction.IrisClose => HikNativeMethods.IRIS_CLOSE,
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PtzAction.Wiper => HikNativeMethods.WIPER_PWRON,
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_ => 0
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};
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if (hikCommand == 0) return;
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// 2. 转换停止标志 (海康: 0=开始, 1=停止)
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uint dwStop = stop ? 1u : 0u;
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// 3. 限制速度范围 (1-7)
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uint dwSpeed = (uint)Math.Clamp(speed, 1, 7);
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// 4. 调用 SDK
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await Task.Run(() =>
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{
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// Channel 默认为 1
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bool result = HikNativeMethods.NET_DVR_PTZControlWithSpeed_Other(userId, 1, hikCommand, dwStop, dwSpeed);
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if (!result)
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{
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// 这里通常不抛异常，因为云台繁忙或到头是常态，记录日志即可
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// Console.WriteLine($"PTZ Error: {HikNativeMethods.NET_DVR_GetLastError()}");
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}
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});
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}
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public async Task PtzStepAsync(PtzAction action, int durationMs, int speed)
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{
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// 1. 开始转动 (调用已有的逻辑，stop=false)
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await PtzControlAsync(action, false, speed);
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// 2. 等待指定时间 (非阻塞等待)
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// 注意：这里使用 Task.Delay，精度对云台控制来说足够了
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if (durationMs > 0)
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{
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await Task.Delay(durationMs);
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}
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// 3. 停止转动 (调用已有的逻辑，stop=true)
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await PtzControlAsync(action, true, speed);
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}
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} |