X13.Periphery.TWIDriver.Recv C# (CSharp) Method

    public void Recv(byte[] msgData) {
      if(msgData==null || msgData.Length<4) {
        return;
      }
      for(int i=_drivers.Count-1; i>=0; i--) {
        if(_drivers[i].Recv(msgData)) {
          return;
        }
      }
    }

 //TODO: Unsubscribe
 private void SetValue(TopicInfo ti, byte[] msgData, bool retained) {
   if(ti!=null) {
     if(!ti.path.StartsWith(Owner.path)) {
       return;     // not allow publish
     }
     object val;
     switch(Type.GetTypeCode(ti.topic.valueType)) {
     case TypeCode.Boolean:
       val=(msgData[0]!=0);
       break;
     case TypeCode.Int64: {
         long rv=(msgData[msgData.Length-1]&0x80)==0?0:-1;
         for(int i=msgData.Length-1; i>=0; i--) {
           rv<<=8;
           rv|=msgData[i];
         }
         val=rv;
       }
       break;
     case TypeCode.String:
       val=Encoding.Default.GetString(msgData);
       break;
     case TypeCode.Object:
       if(ti.topic.valueType==typeof(PLC.ByteArray)) {
         val=new PLC.ByteArray(msgData);
         break;
       } else if(ti.topic.valueType==typeof(SmartTwi)) {
         var sa=(ti.topic.GetValue() as SmartTwi);
         if(sa==null) {
           sa=new SmartTwi(ti.topic);
           sa.Recv(msgData);
           val=sa;
         } else {
           sa.Recv(msgData);
           return;
         }
         break;
       } else if(ti.topic.valueType==typeof(TWIDriver)) {
         var twi=(ti.topic.GetValue() as TWIDriver);
         if(twi==null) {
           twi=new TWIDriver(ti.topic);
           twi.Recv(msgData);
           val=twi;
         } else {
           twi.Recv(msgData);
           return;
         }
         break;
       } else {
         return;
       }
     default:
       return;
     }
     ti.topic.saved=retained;
     ti.topic.SetValue(val, new TopicChanged(TopicChanged.ChangeArt.Value, Owner));
   }
 }