/// <summary>
/// UDP接收GPS数据格式：
/// 4字节：Type = 5;
/// 4字节：设备ID；
/// 8字节：时间戳；
/// 后续数据：标准的NMEA 0183协议GPS数据
/// </summary>
/// <param name="receiveData">接收到的数据</param>
private void receiveGPSMessage(byte[] receiveData)
{
string message = Encoding.Default.GetString(receiveData, 16, receiveData.Length - 16);
//切割字符串
string[] temp = message.Split(',');
AudioAndVideoDevice device = new AudioAndVideoDevice();
device.Name = BitConverter.ToInt32(receiveData, 4).ToString(); //设备的ID
device.Lat = Double.Parse(temp[3].Substring(0, 2))
+ Double.Parse(temp[3].Substring(2)) / 60.0; //设备纬度
device.Lon = Double.Parse(temp[5].Substring(0, 3))
+ Double.Parse(temp[5].Substring(3)) / 60.0; //设备经度
logger.Info("收到来自“" + device.Name +
"”的UDP消息：“" + message + "”。");
RaiseReceiveGPS(device);
}
/// <summary>
/// 上报接收到GPS信号事件
/// </summary>
/// <param name="device"></param>
private void RaiseReceiveGPS(AudioAndVideoDevice device)
{
OnReceiveGPS?.Invoke(device);
}
