private DaqData ProcessPacket(List <DaqDataPacket> packets, DaqDataPacket packet)
{
DaqData result = null;
if (packet.DataType == DaqDataType.DAQ_DATA)
{
packets.Add(packet);
if (lastGaps != null && packets.Count == PacketCountFor1Sec)
{
result = PopAndProcessAsyncPackets(packets);
}
}
else if (packet.DataType == DaqDataType.GAP_DATA)
{
if (lastGaps == null)
{
//연결 후 처음 gap 받은 시점(이전의 DAQ_DATA는 미완성 데이타)
packets.Clear();
}
var gapAndRpm = packet.ToWords();
lastGaps = gapAndRpm.Take(8).Select(w => ConvertGap(w)).ToArray();
lastRpm1 = ConvertRpm(packet.Bytes, 16);
lastRpm2 = ConvertRpm(packet.Bytes, 20);
}
return(result);
}
public DaqData FetchData()
{
List <DaqDataPacket> packets = new List <DaqDataPacket>();
DaqData result = null;
while (result == null)
{
var packet = DaqDataPacket.RecvDataPacket(this, qs, "fetch");
result = ProcessPacket(packets, packet);
}
return(result);
}
//모자른 만큼만 추가로 스트림에서 읽음
public byte[] PullLast(int size)
{
var readSize = size - byteQueue.Count;
if (readSize <= 0)
{
return(byteQueue.Take(size).ToArray());
}
var block = DaqDataPacket.ReadBlock(stream, readSize);
foreach (var b in block)
{
byteQueue.AddLast(b);
}
return(byteQueue.Take(size).ToArray());
}
