private static AddressInt32Vqt[] toAddressInt32Vqts(IntPtr pData, int iDataLength, int iParamCount)
{
//int int int long == 20
if (iDataLength < iParamCount * 20)
{
return(null);
}
//byte[] bs = new byte[iDataLength];
//Marshal.Copy(pData, bs, 0, iDataLength);
AddressInt32Vqt[] values = new AddressInt32Vqt[iParamCount];
int iOffset = 0;
for (int i = 0; i < iParamCount; i++)
{
values[i].address = Marshal.ReadInt32(pData, iOffset); iOffset += 4;
values[i].value = Marshal.ReadInt32(pData, iOffset); iOffset += 4;
values[i].quality = Marshal.ReadInt32(pData, iOffset); iOffset += 4;
long dt = Marshal.ReadInt64(pData, iOffset); iOffset += 8;
if (dt > MinMsepoch && dt < MaxMsepoch)
{
values[i].datetime = msepochToDateTime(dt);
}
}
//ptr = (IntPtr)(((long)ptr) + perf_object_type.TotalByteLength);
return(values);
}
//new at 20160511 by oudream
//读实时数据以散列方式：遥信、开关量、状态
//* @param inOutYx ：输入与输出结构体，输入时存放有Mid字段值，即 address；输出时带有查询结果数据信息
//* @return ： 0：什么都没发生，函数空白； >0 ：表示成功读了多少个；； <0 ：表示错误；
public static int GetAddressInt32Vqt(ref AddressInt32Vqt inOutYx)
{
//byte[] datas = new byte[vqt.Length * 20];
int r = 0;
int iMidCount = 1;
int iDataLength = iMidCount * 20;
IntPtr pnt = IntPtr.Zero;
pnt = Marshal.AllocHGlobal(iDataLength);
int iOffset = 0;
try
{
Marshal.WriteInt32(pnt, iOffset, inOutYx.address); iOffset += 4;
Marshal.WriteInt32(pnt, iOffset, inOutYx.value); iOffset += 4;
Marshal.WriteInt32(pnt, iOffset, inOutYx.quality); iOffset += 4;
Marshal.WriteInt64(pnt, iOffset, getMsepoch(inOutYx.datetime)); iOffset += 8;
r = gci_realtime_data_get_list(0x01010203, pnt, iDataLength, iMidCount, IntPtr.Zero);
if (r > 0)
{
AddressInt32Vqt[] yxs = toAddressInt32Vqts(pnt, iDataLength, iMidCount);
if (yxs != null && yxs.Length > 0)
{
inOutYx = yxs[0];
}
}
}
finally
{
Marshal.FreeHGlobal(pnt);
}
return(r);
}
