public static Table2D TryParseValid(System.IO.Stream stream)
{
s_tableInfo2D.Reset();
s_tableInfo2D.location = (int)stream.Position;
s_tableInfo2D.countX = stream.ReadInt16BigEndian();
// First byte matters, residual byte probably just zero for alignment.
// By reading as little endian word we read and verify all two bytes in one go.
s_tableInfo2D.tableType = (TableType)stream.ReadInt16LittleEndian();
s_tableInfo2D.rangeX.Pos = stream.ReadInt32BigEndian();
s_tableInfo2D.rangeY.Pos = stream.ReadInt32BigEndian();
// most but not all non-float tables have MAC floats:
s_tableInfo2D.multiplier = stream.ReadSingleBigEndian();
s_tableInfo2D.offset = stream.ReadSingleBigEndian();
long afterRecord = stream.Position;
if (s_tableInfo2D.IsRecordValid())
{
if (!s_tableInfo2D.hasMAC)
{
// must back off stream position for next possible struct
afterRecord -= 2 * FloatSize;
}
bool valuesOk = s_tableInfo2D.ReadValidateValues(stream);
// if (!valuesOk) {
// Console.Error.WriteLine ("2D: Error in values");
// }
stream.Position = afterRecord;
return(valuesOk ? s_tableInfo2D.Copy() : null);
}
else
{
return(null);
}
}
