ossimHdf5 Class Reference

Low-level OSSIM interface to HDF5 libraries. More...

#include <ossimHdf5.h>

Inheritance diagram for ossimHdf5:

Public Member Functions
	ossimHdf5 ()
	~ossimHdf5 ()
bool	open (const ossimFilename &hdf5File)
	Opens specified HDF5 file. More...
bool	isOpen () const
bool	close ()
	Closes the file and deletes all pointers. More...
bool	getRoot (H5::Group &root) const
	Assigns the root group. More...
H5::Group *	findGroupByName (const std::string &group_name, const H5::Group *parent_group=0, bool recursive=false) const
	Finds a group by name. More...
H5::DataSet *	findDatasetByName (const std::string &dataset_name, const H5::Group *group=0, bool recursive=false) const
	Finds a dataset by name. More...
Public Member Functions inherited from ossimReferenced
	ossimReferenced ()
	ossimReferenced (const ossimReferenced &)
ossimReferenced &	operator= (const ossimReferenced &)
void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...
void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...
void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...
int	referenceCount () const

Static Public Member Functions
static bool	getChildGroups (H5::Group group, std::vector< H5::Group > &groupList, bool recursive=false)
	Assigns list of groups under specified group. More...
static bool	getDatasets (H5::Group group, std::vector< H5::DataSet > &datasetList, bool recursive=false)
	Assigns list of datasets under specified group. More...
static bool	getNdimDatasets (H5::Group group, std::vector< H5::DataSet > &datasetList, bool recursive=false)
	Assigns list of all multi-dimensional datasets under current active group. More...
static bool	getAttributes (const H5::H5Object &obj, std::vector< H5::Attribute > &attrList)
static ossimByteOrder	getByteOrder (const H5::AbstractDs *obj)
static ossimByteOrder	getByteOrder (const H5::AtomType &obj)
static std::string	getDatatypeClassType (ossim_int32 type)
static void	getExtents (const H5::DataSet &dataset, std::vector< ossim_uint32 > &extents)
static ossimScalarType	getScalarType (const H5::DataSet &dataset)
static ossimScalarType	getScalarType (const H5::DataType &datatype)
static bool	floatTypeToString (std::string &result, const H5::FloatType &dataType, const char *dataPtr)
static bool	intTypeToString (std::string &result, const H5::IntType &dataType, const char *dataPtr)
static bool	stringTypeToString (std::string &result, const H5::StrType &dataType, const char *dataPtr)

Private Attributes
ossimFilename	m_filename
H5::H5File *	m_h5File

Additional Inherited Members
Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Detailed Description

Low-level OSSIM interface to HDF5 libraries.

Catches HDF5 exceptions on common operations. Note, all methods return by value as that is the way HDF5 returns objects. This seems very inefficient, particularly for large datasets. Hopefully they are shallow copies.

Definition at line 27 of file ossimHdf5.h.

Constructor & Destructor Documentation

ossimHdf5()

ossimHdf5::ossimHdf5

(

)

Definition at line 20 of file ossimHdf5.cpp.

:  m_h5File (0)
{  }

~ossimHdf5()

ossimHdf5::~ossimHdf5

(

)

Definition at line 24 of file ossimHdf5.cpp.

References close().

{
   close();
}

Member Function Documentation

close()

bool ossimHdf5::close

(

)

Closes the file and deletes all pointers.

Returns

True if close successful.

Definition at line 72 of file ossimHdf5.cpp.

References m_h5File, ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by open(), and ~ossimHdf5().

{
   bool success = true;
   if (m_h5File)
   {
      try
      {
         m_h5File->close();
         delete m_h5File;
         m_h5File = 0;
      }
      catch( const H5::Exception& e )
      {
         ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
         success = false;
      }
   }
   return success;
}

findDatasetByName()

H5::DataSet * ossimHdf5::findDatasetByName	(	const std::string &	dataset_name,
		const H5::Group *	group = 0,
		bool	recursive = false
	)		const

Finds a dataset by name.

The first object with specified name (can be relative path – a naive string comparison is performed) under the specified group is returned.

Parameters

group	If null, implies root group.
recursive	If true, recursively visits all subgroups.

Returns

result Set to valid dataset object if found (caller assumes ownership), else NULL. The return value must be deleted by the caller

Definition at line 295 of file ossimHdf5.cpp.

References ossimString::contains(), getDatasets(), getRoot(), ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Info::getKeywordlistDataset(), and ossimHdf5GridModel::initCoarseGrid().

{
   if (name.empty())
      return NULL;

   H5::Group baseGroup;
   if (group == NULL)
   {
      if (!getRoot(baseGroup))
         return NULL;
   }
   else
   {
      baseGroup = *group;
   }
   H5::DataSet* named_dataset = 0;
   vector<DataSet> datasetList;
   if (!getDatasets(baseGroup, datasetList, recursive))
      return NULL;
   try
   {
      std::vector<H5::DataSet>::iterator dataset = datasetList.begin();
      while (dataset != datasetList.end())
      {
         // bool found;
         ossimString dsName = dataset->getObjName();
         if (dsName.contains(name))
         {
            named_dataset = new H5::DataSet(*dataset);
            break;
         }
         ++dataset;
      }
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
   }
   return named_dataset;
}

findGroupByName()

H5::Group * ossimHdf5::findGroupByName	(	const std::string &	group_name,
		const H5::Group *	parent_group = 0,
		bool	recursive = false
	)		const

Finds a group by name.

The first object with specified name (can be relative path – a naive string comparison is performed) under the specified parent group is returned.

Parameters

group	If null, implies root group.
recursive	If true, recursively visits all subgroups.

Returns

result Set to valid dataset object if found (caller assumes ownership), else NULL.

Definition at line 251 of file ossimHdf5.cpp.

References ossimString::contains(), getChildGroups(), getRoot(), ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Info::getKeywordlistGroup(), and ossimHdf5GridModel::initCoarseGrid().

{
   if (name.empty())
      return NULL;

   H5::Group baseGroup;
   if (parent == NULL)
   {
      if (!getRoot(baseGroup))
         return NULL;
   }
   else
   {
      baseGroup = *parent;
   }

   H5::Group* named_group = 0;
   vector<Group> groupList;
   if (!getChildGroups(baseGroup, groupList, recursive))
      return NULL;

   try
   {
      std::vector<Group>::iterator group = groupList.begin();
      while (group != groupList.end())
      {
         // bool found;
         ossimString dsName = group->getObjName();
         if (dsName.contains(name))
         {
            named_group = new Group(*group);
            break;
         }
         ++group;
      }
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
   }

   return named_group;
}

floatTypeToString()

bool ossimHdf5::floatTypeToString ( std::string &  result, const H5::FloatType &  dataType, const char *  dataPtr  )

static

Definition at line 577 of file ossimHdf5.cpp.

References ossim::byteOrder(), getByteOrder(), ossimString::string(), ossimEndian::swap(), and ossimString::toString().

Referenced by ossimHdf5Info::dumpArrayType(), ossimHdf5Info::dumpAttribute(), and ossimHdf5Info::dumpFloatType().

{
   char* buf = const_cast<char*>(dataPtr);
   ossim_uint32 dataSize = dataType.getSize();
   ossimByteOrder order = getByteOrder(dataType);
   ossimEndian endian;
   bool swapOrder = (order!=ossim::byteOrder());
   bool returnValue = true;
   switch(dataSize)
   {
      case 4:
      {
         ossim_float32* float_value=0;
         float_value = reinterpret_cast<ossim_float32*>(buf);
         if (swapOrder)
            endian.swap(*float_value);
         result = ossimString::toString(*float_value).string();
         break;
      }
      case 8:
      {
         ossim_float64* float_value=0;
         float_value = reinterpret_cast<ossim_float64*>(buf);
         if (swapOrder)
            endian.swap(*float_value);
         result = ossimString::toString(*float_value).string();
         break;
      }
      default:
      {
         returnValue = false;
         break;
      }
   }
   return returnValue;
}

getAttributes()

bool ossimHdf5::getAttributes ( const H5::H5Object &  obj, std::vector< H5::Attribute > &  attrList  )

static

Parameters

objPath

Either relative or absolute path in file to object.

Returns

True if result valid

Definition at line 227 of file ossimHdf5.cpp.

References ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Info::dumpAttributes(), and ossimHdf5Info::printAttributes().

{
   attrList.clear();

   // Find the object:
   bool success = true;
   try
   {
      int numAttr = obj.getNumAttrs();
      for (int i=0; i<numAttr; ++i)
      {
         attrList.push_back(obj.openAttribute(i));
      }
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
      success = false;
   }

   return success;
}

getByteOrder() [1/2]

ossimByteOrder ossimHdf5::getByteOrder ( const H5::AbstractDs *  obj )

static

Definition at line 337 of file ossimHdf5.cpp.

References ossim::byteOrder(), OSSIM_BIG_ENDIAN, OSSIM_LITTLE_ENDIAN, ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5ImageDataset::determineScalarType(), ossimHdf5Info::dumpArrayType(), ossimHdf5Info::dumpAttribute(), ossimHdf5Info::dumpDataset(), ossimHdf5Info::dumpNumerical(), floatTypeToString(), intTypeToString(), and ossimHdf5Info::print().

{
   ossimByteOrder byteOrder = ossim::byteOrder();
   if ( obj )
   {
      try
      {

         // Get the class of the datatype that is used by the dataset.
         H5T_class_t typeClass = obj->getTypeClass();

         H5T_order_t order = H5T_ORDER_NONE;

         if ( typeClass == H5T_INTEGER )
         {
            H5::IntType intype = obj->getIntType();
            order = intype.getOrder();
         }
         else if ( typeClass == H5T_FLOAT )
         {
            H5::FloatType floatType = obj->getFloatType();
            order = floatType.getOrder();
         }

         if ( order == H5T_ORDER_LE )
         {
            byteOrder = OSSIM_LITTLE_ENDIAN;
         }
         else if ( order == H5T_ORDER_BE )
         {
            byteOrder = OSSIM_BIG_ENDIAN;
         }
      }
      catch( const H5::Exception& e )
      {
         ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
      }
   }
   return byteOrder;
}

getByteOrder() [2/2]

ossimByteOrder ossimHdf5::getByteOrder ( const H5::AtomType &  obj )

static

Definition at line 378 of file ossimHdf5.cpp.

References ossim::byteOrder(), OSSIM_BIG_ENDIAN, and OSSIM_LITTLE_ENDIAN.

{
   ossimByteOrder byteOrder = ossim::byteOrder();
   H5T_order_t order = obj.getOrder();
   if ( order == H5T_ORDER_LE )
   {
      byteOrder = OSSIM_LITTLE_ENDIAN;
   }
   else if ( order == H5T_ORDER_BE )
   {
      byteOrder = OSSIM_BIG_ENDIAN;
   }

   return byteOrder;
}

getChildGroups()

bool ossimHdf5::getChildGroups ( H5::Group  group, std::vector< H5::Group > &  groupList, bool  recursive = false  )

static

Assigns list of groups under specified group.

Parameters

recursive

If true, recursively visits all subgroups

Returns

True if result valid

Definition at line 112 of file ossimHdf5.cpp.

References ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Info::dumpGroup(), findGroupByName(), getDatasets(), getNdimDatasets(), and ossimHdf5Info::printSubGroups().

{
   bool success = true;

   int numObjs = 0;

   try
   {
      numObjs = group.getNumObjs();
   }
   catch( const H5::Exception& e )
   {
      e.getDetailMsg();
      success = false;
   }
   for (int i=0; (i<numObjs) && success; ++i)
   {
      try
      {
         H5G_obj_t h5type = group.getObjTypeByIdx(i);
         if (h5type == H5G_GROUP)
         {
            string name = group.getObjnameByIdx(i);
            groupList.push_back(group.openGroup(name));
            if (recursive)
               success = getChildGroups(groupList.back(), groupList, true);
         }
      }
      catch( const H5::Exception& e )
      {
         ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
         success = false;
      }
   }
   return success;
}

getDatasets()

bool ossimHdf5::getDatasets ( H5::Group  group, std::vector< H5::DataSet > &  datasetList, bool  recursive = false  )

static

Assigns list of datasets under specified group.

Parameters

recursive

If true, recursively visits all datasets for this group and subgroups

Returns

True if result valid

Definition at line 150 of file ossimHdf5.cpp.

References getChildGroups(), ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Info::dumpGroup(), ossimHdf5Tool::execute(), findDatasetByName(), ossimHdf5Info::getKeywordlist(), and ossimHdf5Info::printDatasets().

{
   datasetList.clear();
   vector<Group> groupList;
   if (recursive)
   {
      getChildGroups(group, groupList, true);
   }
   groupList.insert(groupList.begin(), group);

   bool success = true;
   try
   {
      vector<Group>::iterator group_iter = groupList.begin();
      while (group_iter != groupList.end())
      {
         int numObjs = group_iter->getNumObjs();
         for (int i=0; i<numObjs; ++i)
         {
            H5G_obj_t h5type = group_iter->getObjTypeByIdx(i);
            if (h5type == H5G_DATASET)
            {
               string name = group_iter->getObjnameByIdx(i);
               datasetList.push_back(group_iter->openDataSet(name));
            }
         }
         ++group_iter;
      }
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
      success = false;
   }
   return success;
}

getDatatypeClassType()

std::string ossimHdf5::getDatatypeClassType ( ossim_int32  type )

static

Definition at line 395 of file ossimHdf5.cpp.

Referenced by ossimHdf5Info::dumpAttribute(), ossimHdf5Info::dumpCompoundTypeInfo(), and ossimHdf5Info::dumpDataset().

{
   H5T_class_t classType = (H5T_class_t)type;

   std::string result;
   switch ( classType )
   {
   case H5T_INTEGER:
      result = "H5T_INTEGER";
      break;
   case H5T_FLOAT:
      result = "H5T_FLOAT";
      break;
   case H5T_TIME:
      result = "H5T_TIME";
      break;
   case H5T_STRING:
      result = "H5T_STRING";
      break;
   case H5T_BITFIELD:
      result = "H5T_BITFIELD";
      break;
   case H5T_OPAQUE:
      result = "H5T_OPAQUE";
      break;
   case H5T_COMPOUND:
      result = "H5T_COMPOUND";
      break;
   case H5T_REFERENCE:
      result = "H5T_REFERENCE";
      break;
   case H5T_ENUM:
      result = "H5T_ENUM";
      break;
   case H5T_VLEN:
      result = "H5T_VLEN";
      break;
   case H5T_ARRAY:
      result = "H5T_ARRAY";
      break;
   case H5T_NO_CLASS:
   default:
      result = "H5T_NO_CLASS";
      break;
   }
   return result;
}

getExtents()

void ossimHdf5::getExtents ( const H5::DataSet &  dataset, std::vector< ossim_uint32 > &  extents  )

static

Definition at line 444 of file ossimHdf5.cpp.

References ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Info::dumpDataset().

{
   extents.clear();

   try
   {
      // Get dataspace of the dataset.
      H5::DataSpace dataspace = dataset.getSpace();

      // Number of dimensions:
      int ndims = dataspace.getSimpleExtentNdims();
      if ( ndims )
      {
         //hsize_t dims_out[ndims];
         std::vector<hsize_t> dims_out(ndims);
         dataspace.getSimpleExtentDims( &dims_out.front(), 0 );
         for ( ossim_int32 i = 0; i < ndims; ++i )
         {
            extents.push_back(static_cast<ossim_uint32>(dims_out[i]));
         }
      }

      dataspace.close();
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
   }
}

getNdimDatasets()

bool ossimHdf5::getNdimDatasets ( H5::Group  group, std::vector< H5::DataSet > &  datasetList, bool  recursive = false  )

static

Assigns list of all multi-dimensional datasets under current active group.

Parameters

recursive

If true, recursively visits all datasets for this group and subgroups

Returns

True if result valid

Definition at line 188 of file ossimHdf5.cpp.

References getChildGroups(), ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Tool::execute().

{
   datasetList.clear();
   vector<Group> groupList;
   if (recursive)
      getChildGroups(group, groupList, true);
   groupList.insert(groupList.begin(), group);

   bool success = true;
   try
   {
      vector<Group>::iterator group_iter = groupList.begin();
      while (group_iter != groupList.end())
      {
         int numObjs = group_iter->getNumObjs();
         for (int i=0; i<numObjs; ++i)
         {
            H5G_obj_t h5type = group_iter->getObjTypeByIdx(i);
            if (h5type == H5G_DATASET)
            {
               string name = group_iter->getObjnameByIdx(i);
               DataSet dataset (group_iter->openDataSet(name));
               DataSpace dspace (dataset.getSpace());
               if (dspace.getSimpleExtentNdims() > 1)
                  datasetList.push_back(dataset);
            }
         }
         ++group_iter;
      }
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
      success = false;
   }
   return success;
}

getRoot()

bool ossimHdf5::getRoot

(

H5::Group &

root

)

const

Assigns the root group.

Returns

True if result valid

Definition at line 93 of file ossimHdf5.cpp.

References m_h5File, ossimNotify(), and ossimNotifyLevel_WARN.

Referenced by ossimHdf5Tool::execute(), findDatasetByName(), findGroupByName(), ossimHdf5Info::getKeywordlist(), ossimHdf5Info::getKeywordlistDataset(), ossimHdf5Info::getKeywordlistGroup(), and ossimHdf5Info::print().

{
   if (!m_h5File)
      return false;

   bool success = true;
   try
   {
      root = m_h5File->openGroup("/");
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
      success = false;
   }
   return success;

}

getScalarType() [1/2]

ossimScalarType ossimHdf5::getScalarType ( const H5::DataSet &  dataset )

static

Definition at line 475 of file ossimHdf5.cpp.

References ossim::isSigned(), OSSIM_FLOAT32, OSSIM_FLOAT64, OSSIM_SCALAR_UNKNOWN, OSSIM_SINT16, OSSIM_SINT32, OSSIM_SINT64, OSSIM_SINT8, OSSIM_UINT16, OSSIM_UINT32, OSSIM_UINT64, OSSIM_UINT8, ossimNotify(), ossimNotifyLevel_WARN, and size.

Referenced by ossimHdf5Info::dumpNumerical(), and ossimHdf5Info::dumpNumericalTypeInfo().

{
   ossimScalarType scalar = OSSIM_SCALAR_UNKNOWN;

   try
   {

      H5::DataType datatype =  dataset.getDataType();
      ossim_int32 typeClass = datatype.getClass();
      if ( ( typeClass != H5T_INTEGER ) && ( typeClass != H5T_FLOAT ) )
         return scalar;

      size_t size = 0;
      hid_t mem_type_id = H5Dget_type( datatype.getId() );
      if( mem_type_id > -1 )
      {
         hid_t native_type = H5Tget_native_type(mem_type_id, H5T_DIR_DEFAULT);

         if( H5Tequal(H5T_NATIVE_CHAR, native_type) )
            scalar = OSSIM_SINT8;
         else if ( H5Tequal( H5T_NATIVE_UCHAR, native_type) )
            scalar = OSSIM_UINT8;
         else if( H5Tequal( H5T_NATIVE_SHORT, native_type) )
            scalar = OSSIM_SINT16;
         else if(H5Tequal(H5T_NATIVE_USHORT, native_type))
            scalar = OSSIM_UINT16;
         else if(H5Tequal( H5T_NATIVE_INT, native_type))
            scalar = OSSIM_SINT32;
         else if(H5Tequal( H5T_NATIVE_UINT, native_type ) )
            scalar = OSSIM_UINT32;
         else if(H5Tequal( H5T_NATIVE_LONG, native_type))
            scalar = OSSIM_SINT32;
         else if(H5Tequal( H5T_NATIVE_ULONG, native_type))
            scalar = OSSIM_UINT32;
         else if(H5Tequal( H5T_NATIVE_LLONG, native_type))
            scalar = OSSIM_SINT64;
         else if(H5Tequal( H5T_NATIVE_ULLONG, native_type))
            scalar = OSSIM_UINT64;
         else if(H5Tequal( H5T_NATIVE_FLOAT, native_type))
            scalar = OSSIM_FLOAT32;
         else if(H5Tequal( H5T_NATIVE_DOUBLE, native_type))
            scalar = OSSIM_FLOAT64;
      }
      else if ( typeClass == H5T_INTEGER )
      {
         H5::IntType intType (dataset);
         bool isSigned = intType.getSign() == H5T_SGN_NONE ? false : true;
         size = intType.getSize();
         switch (size)
         {
         case 1:
            if (isSigned)
               scalar = OSSIM_SINT8;
            else
               scalar = OSSIM_UINT8;
            break;
         case 2:
            if (isSigned)
               scalar = OSSIM_SINT16;
            else
               scalar = OSSIM_UINT16;
            break;
         case 4:
            if (isSigned)
               scalar = OSSIM_SINT32;
            else
               scalar = OSSIM_UINT32;
            break;
         case 8:
            if (isSigned)
               scalar = OSSIM_SINT64;
            else
               scalar = OSSIM_UINT64;
            break;
         default:
            break;
         }
      }
      else // float
      {
         size = datatype.getSize();
         switch (size)
         {
         case 4:
            scalar = OSSIM_FLOAT32;
            break;
         case 8:
            scalar = OSSIM_FLOAT64;
            break;
         default:
            break;
         }
      }
   }
   catch( const H5::Exception& e )
   {
      ossimNotify(ossimNotifyLevel_WARN)<<e.getDetailMsg();
   }

   return scalar;
}

getScalarType() [2/2]

static ossimScalarType ossimHdf5::getScalarType ( const H5::DataType &  datatype )

static

intTypeToString()

bool ossimHdf5::intTypeToString ( std::string &  result, const H5::IntType &  dataType, const char *  dataPtr  )

static

Definition at line 616 of file ossimHdf5.cpp.

References ossim::byteOrder(), getByteOrder(), ossimString::string(), ossimEndian::swap(), and ossimString::toString().

Referenced by ossimHdf5Info::dumpArrayType(), ossimHdf5Info::dumpAttribute(), and ossimHdf5Info::dumpIntType().

{
   char* buf = const_cast<char*>(dataPtr);
   ossim_uint32 signType = H5Tget_sign(dataType.getId());
   ossim_uint32 dataSize = dataType.getSize();
   ossimByteOrder order = getByteOrder(dataType);
   ossimEndian endian;
   bool swapOrder = (order!=ossim::byteOrder());
   bool returnValue = true;
   switch(dataSize)
   {
      case 1: // one byte integer
      {
         switch(signType)
         {
            case H5T_SGN_NONE:
            {
              ossim_uint8* intValue=0;
              intValue = reinterpret_cast<ossim_uint8*>(buf);
              result = ossimString::toString(*intValue).string();

               break;
            }
            case H5T_SGN_2:
            {
              ossim_int8* intValue=0;
              intValue = reinterpret_cast<ossim_int8*>(buf);
              result = ossimString::toString(*intValue).string();

              break;
            }
            default:
            {
               returnValue = false;
               break;
            }
         }
         break;
      }
      case 2:  // 2 byte integer
      {
         switch(signType)
         {
            case H5T_SGN_NONE: // unsigned
            {
              ossim_uint16* intValue=0;
              intValue = reinterpret_cast<ossim_uint16*>(buf);
              if (swapOrder)
                 endian.swap(*intValue);
              result = ossimString::toString(*intValue).string();

               break;
            }
            case H5T_SGN_2: // Signed
            {
              ossim_int16* intValue=0;
              intValue = reinterpret_cast<ossim_int16*>(buf);
              if (swapOrder)
                 endian.swap(*intValue);
              result = ossimString::toString(*intValue).string();
              break;
            }
            default:
            {
               returnValue = false;
               break;
            }

         }
         break;
      }
      case 4: // 4 byte integer
      {
         switch(signType)
         {
            case H5T_SGN_NONE:
            {
              ossim_uint32* intValue=0;
              intValue = reinterpret_cast<ossim_uint32*>(buf);
              if (swapOrder)
                 endian.swap(*intValue);
              result = ossimString::toString(*intValue).string();

               break;
            }
            case H5T_SGN_2:
            {
              ossim_int32* intValue=0;
              intValue = reinterpret_cast<ossim_int32*>(buf);
              if (swapOrder)
                 endian.swap(*intValue);
              result = ossimString::toString(*intValue).string();
              break;
            }
            default:
            {
               returnValue = false;
               break;
            }
         }
         break;
      }
      case 8: // 8 byte integer
      {
         switch(signType)
         {
            case H5T_SGN_NONE:
            {
              ossim_uint64* intValue=0;
              intValue = reinterpret_cast<ossim_uint64*>(buf);
              if (swapOrder)
                 endian.swap(*intValue);
              result = ossimString::toString(*intValue).string();

               break;
            }
            case H5T_SGN_2:
            {
              ossim_int64* intValue=0;
              intValue = reinterpret_cast<ossim_int64*>(buf);
              if (swapOrder)
                 endian.swap(*intValue);
              result = ossimString::toString(*intValue).string();
              break;
            }
            default:
            {
               returnValue = false;
               break;
            }
         }
         break;
      }
      default:
      {
         returnValue = false;
      }
   }

   return returnValue;
}

isOpen()

bool ossimHdf5::isOpen ( ) const

inline

Definition at line 36 of file ossimHdf5.h.

{ return (m_h5File != NULL); }

open()

bool ossimHdf5::open

(

const ossimFilename &

hdf5File

)

Opens specified HDF5 file.

Definition at line 29 of file ossimHdf5.cpp.

References close(), ossimString::empty(), m_filename, m_h5File, ossimNotify(), ossimNotifyLevel_WARN, and ossimString::string().

Referenced by ossimHdf5ProjectionFactory::createProjection(), and ossimHdf5Info::open().

{
   // Check for empty filename.
   if (fullname.empty())
      return false;

   m_filename = fullname;
   if (m_h5File && !close())
      return false;

   // H5 lib throws exceptions:
   bool success = false;
   try
   {
      // Turn off the auto-printing when failure occurs so that we can handle the errors:
      H5::Exception::dontPrint();
      if ( H5File::isHdf5( m_filename.string() ) )
      {
         m_h5File = new H5File(m_filename.string(), H5F_ACC_RDONLY);
         success  = true;
      }
   }
   catch( const H5::Exception& e )
   {
      success = false;
      ossimNotify(ossimNotifyLevel_WARN) <<e.getDetailMsg() << std::endl;
   }
   catch( ... )
   {
      ossimNotify(ossimNotifyLevel_WARN)<< "ossimH5Info::open WARNING Caught unhandled exception "
         "for file <"<< fullname <<">"<< std::endl;
      success = false;
   }

   if (!success)
   {
      delete m_h5File;
      m_h5File = 0;
   }

   return success;
}

stringTypeToString()

bool ossimHdf5::stringTypeToString ( std::string &  result, const H5::StrType &  dataType, const char *  dataPtr  )

static

Definition at line 760 of file ossimHdf5.cpp.

Referenced by ossimHdf5Info::dumpStringType().

{
   bool returnValue = false;
   const char* startPtr = dataPtr;
   const char* endPtr   = dataPtr;
   const char* maxPtr   = dataPtr + dataType.getSize();
   if(dataPtr)
   {
      while((endPtr != maxPtr)&&(*endPtr!='\0')) ++endPtr;
      result = std::string(startPtr, endPtr);
      bool returnValue = true;
   }

   return returnValue;
}

Member Data Documentation

m_filename

ossimFilename ossimHdf5::m_filename

private

Definition at line 112 of file ossimHdf5.h.

Referenced by open().

m_h5File

H5::H5File* ossimHdf5::m_h5File

private

Definition at line 113 of file ossimHdf5.h.

Referenced by close(), getRoot(), and open().

---

The documentation for this class was generated from the following files:

• ossimHdf5.h
• ossimHdf5.cpp