public Dictionary <string, string> GetDatasetAttributes(string datasetName)
{
StringBuilder sds_name = new StringBuilder();
int rank = 0;
int[] dimsizes = new int[MAX_DIMSIZES];
HDF4Helper.DataTypeDefinitions datatype;
int attCount = 0;
try
{
int dsIndex = HDF4Helper.SDnametoindex(sd_id, datasetName);
System.Diagnostics.Debug.WriteLine($"name:{datasetName} index:{dsIndex}");
int dsObjId = HDF4Helper.SDselect(sd_id, dsIndex);
System.Diagnostics.Debug.WriteLine($"dsObjId:{dsObjId}");
HDF4Helper.SDgetinfo(dsObjId, sds_name, out rank, dimsizes, out datatype, out attCount);
//int dsCount = 0;
//HDF4Helper.SDfileinfo(id, out dsCount, out attCount);
if (attCount == 0)
{
return(null);
}
return(GetAttributes(dsObjId, attCount));
}
catch (Exception ex)
{
return(null);
}
}
public void Dispose()
{
if (sd_id > 0)
{
HDF4Helper.SDend(sd_id);
}
}
private string[] GetALLDataset()
{
int num_datasets = 0;
int num_global_attrs = 0;
HDF4Helper.SDfileinfo(sd_id, out num_datasets, out num_global_attrs);
string[] dsNames = ReadSDinfo(sd_id, num_datasets);
return(dsNames);
}
private string ReadAttribute(int objId, int attIndex)
{
HDF4Helper.DataTypeDefinitions dType = HDF4Helper.DataTypeDefinitions.DFNT_CHAR;
int count = 0;
StringBuilder attrName = new StringBuilder(256);
HDF4Helper.SDattrinfo(objId, attIndex, attrName, out dType, out count);
string attValue = GetAttributevalue(dType, objId, attIndex, count);
return(attValue);
}
private void GetAttribute(int objId, int attIndex, out string attName, out string attValue)
{
attName = "";
attValue = "";
StringBuilder attr_name = new StringBuilder(256);
HDF4Helper.DataTypeDefinitions data_type;
int data_count = 0;
HDF4Helper.SDattrinfo(objId, attIndex, attr_name, out data_type, out data_count);
attName = attr_name.ToString();
attValue = GetAttributevalue(data_type, objId, attIndex, data_count);
}
public string GetAttributeValue(string datasetName, string attributeName)
{
try
{
int dsIndex = HDF4Helper.SDnametoindex(sd_id, datasetName);
int dsObjId = HDF4Helper.SDselect(sd_id, dsIndex);
int attIndex = HDF4Helper.SDfindattr(dsObjId, attributeName);
return(ReadAttribute(dsObjId, attIndex));
}
finally
{
}
}
protected void Init(Dataset ds)
{
this.ds = ds;
var subDsDic = ds.GetSubDatasets();
if (Path.GetExtension(fileName).ToLower() != ".l1b" && subDsDic.Count > 0)
{
isMultiDs = true;
//初始化IHdfOperator
{
int _h5FileId = H5F.open(fileName, H5F.ACC_RDONLY);
if (_h5FileId >= 0)
{
hdfOperator = new Hdf5Operator(fileName);
//HDF5
H5F.close(_h5FileId);
}
else if (HDF4Helper.IsHdf4(fileName))
{
//HDF4
hdfOperator = new Hdf4Operator(fileName);
}
}
_fileAttrs = hdfOperator?.GetAttributes();
GetAllSubDatasetFullpaths(ds);
TryGetSizeOfMultiDs();
}
else if (ds.RasterCount > 0)
{
double[] geoTrans = new double[6];
ds.GetGeoTransform(geoTrans);
Width = ds.RasterXSize;
Height = ds.RasterYSize;
ResolutionX = Convert.ToSingle(geoTrans[1]);
ResolutionY = Math.Abs(Convert.ToSingle(geoTrans[5]));
BandCount = ds.RasterCount;
DataType = ds.GetRasterBand(1).DataType;
DriverName = ds.GetDriver().ShortName;
string wkt = ds.GetProjection();
if (!string.IsNullOrEmpty(wkt))
{
SpatialRef = new SpatialReference(wkt);
}
}
}
public bool GetDataSizeInfos(string datasetName, out int rank, out int[] dimsizes, out HDF4Helper.DataTypeDefinitions hdf4Type, out Type dataType, out int dataTypeSize)
{
StringBuilder sds_name = new StringBuilder();
rank = 0;
dimsizes = new int[MAX_DIMSIZES];
dataType = typeof(UInt16);
hdf4Type = HDF4Helper.DataTypeDefinitions.DFNT_NUINT16;
dataTypeSize = 0;
int dsIndex = HDF4Helper.SDnametoindex(sd_id, datasetName);
int dsObjId = HDF4Helper.SDselect(sd_id, dsIndex);
int attCount = 0;
HDF4Helper.SDgetinfo(dsObjId, sds_name, out rank, dimsizes, out hdf4Type, out attCount);
if (rank != 0)
{
dataType = GetTypeFromHDF4DataType(hdf4Type, out dataTypeSize);
return(true);
}
return(false);
}
public Dictionary <string, string> GetAttributes()
{
if (!_readFileAttrs)
{
_readFileAttrs = true;
try
{
int dsCount = 0;
int attCount = 0;
HDF4Helper.SDfileinfo(sd_id, out dsCount, out attCount);
if (attCount == 0)
{
return(null);
}
_fileAttrs = GetAttributes(sd_id, attCount);
}
finally
{
}
}
return(_fileAttrs);
}
private static string[] ReadSDinfo(int sd_id, int num_datasets)
{
string[] dsNames = new string[num_datasets];
for (int dsIndex = 0; dsIndex < num_datasets; dsIndex++)
{
int sds_id = HDF4Helper.SDselect(sd_id, dsIndex);
try
{
StringBuilder sds_name = new StringBuilder(256);
int rank;
int[] dimsizes = new int[256];
HDF4Helper.DataTypeDefinitions data_type;
int num_attrs;
HDF4Helper.SDgetinfo(sds_id, sds_name, out rank, dimsizes, out data_type, out num_attrs);
dsNames[dsIndex] = sds_name.ToString();
}
finally
{
HDF4Helper.SDend(sds_id);
}
}
return(dsNames);
}
private string GetAttributevalue(HDF4Helper.DataTypeDefinitions data_type, int objId, int attIndex, int data_count)
{
StringBuilder attr_Data = new StringBuilder(256);
switch (data_type)
{
case HDF4Helper.DataTypeDefinitions.DFNT_CHAR:
case HDF4Helper.DataTypeDefinitions.DFNT_UCHAR:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(byte)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
byte[] dest = new byte[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (char value in dest)
{
attr_Data.Append(value);
}
break;
}
case HDF4Helper.DataTypeDefinitions.DFNT_INT8:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(byte)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
byte[] dest = new byte[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (sbyte value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
break;
}
case HDF4Helper.DataTypeDefinitions.DFNT_UINT8:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(byte)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
byte[] dest = new byte[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (byte value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
break;
}
case HDF4Helper.DataTypeDefinitions.DFNT_INT16:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(short)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
short[] dest = new short[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (short value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
}
break;
case HDF4Helper.DataTypeDefinitions.DFNT_UINT16:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(short)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
short[] dest = new short[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (ushort value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
}
break;
case HDF4Helper.DataTypeDefinitions.DFNT_INT32:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(int)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
int[] dest = new int[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (int value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
}
break;
case HDF4Helper.DataTypeDefinitions.DFNT_UINT32:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(int)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
int[] dest = new int[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (uint value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
}
break;
case HDF4Helper.DataTypeDefinitions.DFNT_FLOAT32:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(float)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
float[] dest = new float[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (float value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
}
break;
case HDF4Helper.DataTypeDefinitions.DFNT_FLOAT64:
{
IntPtr attr_buff = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(double)) * data_count);
HDF4Helper.SDreadattr(objId, attIndex, attr_buff);
double[] dest = new double[data_count];
Marshal.Copy(attr_buff, dest, 0, data_count);
Marshal.FreeHGlobal(attr_buff);
foreach (double value in dest)
{
attr_Data.Append(value);
attr_Data.Append(",");
}
}
break;
case HDF4Helper.DataTypeDefinitions.DFNT_NINT8:
case HDF4Helper.DataTypeDefinitions.DFNT_NUINT8:
case HDF4Helper.DataTypeDefinitions.DFNT_NINT16:
case HDF4Helper.DataTypeDefinitions.DFNT_NUINT16:
case HDF4Helper.DataTypeDefinitions.DFNT_NINT32:
case HDF4Helper.DataTypeDefinitions.DFNT_NUINT32:
case HDF4Helper.DataTypeDefinitions.DFNT_NFLOAT32:
case HDF4Helper.DataTypeDefinitions.DFNT_NFLOAT64:
break;
default:
break;
}
string str = attr_Data.ToString();
if (str != null)
{
if (str.EndsWith(","))
{
str = str.Substring(0, str.Length - 1);
}
str = str.Replace('\0', ' ');
}
return(str);
}
public Hdf4Operator(string fname)
{
_fname = fname;
sd_id = HDF4Helper.SDstart(_fname, HDF4Helper.AccessCodes.DFACC_READ);
_datasetNames = GetALLDataset();
}