/// <summary>
/// 读取子数据的结构
/// </summary>
/// <param name="fileData">文件数据</param>
/// <param name="fileSize">文件大小</param>
/// <param name="subIndex">需要获取子结构的序号</param>
/// <returns>子数据的结构</returns>
private static SPCSubHeader GetSubHeader(byte[] fileData, int fileSize, int subIndex)
{
IntPtr retptr = IntPtr.Zero;
int datasize = 0;
if (CommonMethod.Is64BitVersion())
{
retptr = SPCGetSubHeader64(fileData, fileSize, subIndex, ref datasize);
}
else
{
retptr = SPCGetSubHeader32(fileData, fileSize, subIndex, ref datasize);
}
bool retOK;
SPCSubHeader retheader = CommonMethod.CopyStructureFromIntptrAndFree <SPCSubHeader>(ref retptr, out retOK);
if (!retOK)
{
retheader.subnpts = int.MaxValue; //表示错误数据
}
return(retheader);
}
public static bool ReadFile(byte[] fileData, int fileSize, FileFormat fileFormat)
{
fileFormat.dataInfoList = null;
fileFormat.acquisitionInfo = null;
fileFormat.xDataList = null;
fileFormat.fileInfo = null;
fileFormat.yDataList = null;
SPCHeader mainheader = GetMainHeader(fileData, fileSize);
if (mainheader.fnpts == int.MaxValue) //读取文件头错误
{
return(false);
}
//填充光谱文件信息
fileFormat.fileInfo = new FileFormat.FileInfo();
fileFormat.fileInfo.createTime = CommonMethod.DWordToDateTime(mainheader.fdate);
fileFormat.fileInfo.dataCount = (int)mainheader.fnpts;
fileFormat.fileInfo.fileMemo = mainheader.fcmnt; //CommonMethod.ConvertFixedByteToString(mainheader.fcmnt, 130);
fileFormat.fileInfo.instDescription = mainheader.fsource; //CommonMethod.ConvertFixedByteToString(mainheader.fsource, 9);
fileFormat.fileInfo.modifyFlag = mainheader.fmods;
double tempres = 0; //resolution
string resstr = mainheader.fres; // CommonMethod.ConvertFixedByteToString(mainheader.fres, 9);
fileFormat.fileInfo.resolution = double.TryParse(resstr, out tempres) == true ? tempres : 0;
fileFormat.fileInfo.specType = mainheader.fexper == 0 ? FileFormat.SPECTYPE.SPCNIR : (FileFormat.SPECTYPE)mainheader.fexper;
fileFormat.fileInfo.xType = (FileFormat.XAXISTYPE)mainheader.fxtype;
fileFormat.fileInfo.zType = (FileFormat.ZAXISTYPE)mainheader.fztype;
fileFormat.fileInfo.fzinc = mainheader.fzinc;
fileFormat.fileInfo.fspare = mainheader.fspare; //CommonMethod.CopyDataArrayFromFixedPtr<float>(mainheader.fspare, 8);
//读取X轴数据
if ((mainheader.ftflgs & (byte)Ftflgs.TXYXYS) == 0) //统一的X轴
{
fileFormat.xDataList = new List <double[]>();
double[] tempx = GetXData(fileData, fileSize, 0);
fileFormat.xDataList.Add(tempx);
}
else //多个X轴
{
fileFormat.xDataList = new List <double[]>();
for (int i = 0; i < mainheader.fnsub; i++)
{
double[] tempx = GetXData(fileData, fileSize, i);
fileFormat.xDataList.Add(tempx);
}
}
//获取Y数据以及格式信息
fileFormat.dataInfoList = new List <FileFormat.DataInfo>();
fileFormat.yDataList = new List <double[]>();
for (int i = 0; i < mainheader.fnsub; i++)
{
SPCSubHeader subheader = GetSubHeader(fileData, fileSize, i);
if (subheader.subnpts == int.MaxValue) //读取结构错误
{
return(false);
}
//读取Y轴数据
double[] ydata = GetYData(fileData, fileSize, i);
if (ydata == null || ydata.Length == 0)
{
return(false);
}
//Y轴数据格式
FileFormat.DataInfo info = new FileFormat.DataInfo();
if (subheader.subscan == 0) //用这个属性来记录子数据的类型（吸收谱，干涉谱等等）
{
info.dataType = mainheader.fytype == 0 ? FileFormat.YAXISTYPE.YABSRB : (FileFormat.YAXISTYPE)mainheader.fytype;
}
else
{
info.dataType = (FileFormat.YAXISTYPE)subheader.subscan;
}
info.firstX = mainheader.ffirst;
info.lastX = mainheader.flast;
info.maxYValue = ydata.Max();
info.minYValue = ydata.Min();
fileFormat.dataInfoList.Add(info);
fileFormat.yDataList.Add(ydata);
}
//读取光谱参数
string parastr = GetLogText(fileData, fileSize);
if (parastr != null)
{
fileFormat.acquisitionInfo = FromSPCLogData(parastr);
}
if (fileFormat.acquisitionInfo == null)
{
fileFormat.acquisitionInfo = new FileFormat.AcquisitionInfo();
}
return(true);
}