bool loadStackHDF5( const char* fileName, Image4DSimple& img )
{
#ifdef USE_HDF5
H5::Exception::dontPrint();
H5::H5File file( fileName, H5F_ACC_RDONLY );
for ( size_t i = 0; i < file.getObjCount(); i++ )
{
H5std_string name = file.getObjnameByIdx( i );
if ( name == "Channels" )
{
H5::Group channels = file.openGroup( name );
// Grab the attributes
H5::Attribute attr = channels.openAttribute( "width" );
H5::DataType type = attr.getDataType();
long width, height;
attr.read( type, &width );
attr.close();
attr = channels.openAttribute( "height" );
attr.read( type, &height );
attr.close();
int num_channels = 0;
// Count the number of channels
for ( size_t obj = 0; obj < channels.getNumObjs(); obj++ )
if ( channels.getObjTypeByIdx( obj ) == H5G_DATASET )
num_channels++;
int channel_idx = 0;
for ( size_t obj = 0; obj < channels.getNumObjs(); obj++ )
{
if ( channels.getObjTypeByIdx( obj ) == H5G_DATASET )
{
H5std_string ds_name = channels.getObjnameByIdx( obj );
H5::DataSet data = channels.openDataSet( ds_name );
uint8_t* buffer = new uint8_t[ data.getStorageSize() ];
data.read( buffer, data.getDataType() );
QByteArray qbarray( ( const char* )buffer, data.getStorageSize() );
data.close();
if ( !loadIndexedStackFFMpeg( &qbarray, img, channel_idx++, num_channels,
width, height ) )
{
v3d_msg( "Error happened in HDF file reading. Stop. \n", false );
return false;
}
delete [] buffer;
}
}
}
}
#endif
return true;
}
/*********************************************************
FunctionName:RecursiveVisitNode
FunctionDesc:递归创建Group
InputParam:
OutputParam:
Return:
Author:xiaowei.han
*********************************************************/
void RecursiveVisitNode(H5::Group& Node, Hdf5_Wrapper::LP_HDF5_DATA pData)
{
using namespace H5;
if (nullptr == pData)
{
return;
}
//获取节点名称
pData->strKeyName = Utility::UTF8ToGB2312(Node.getObjName());
//获取属性个数
int nAttrNum = static_cast<int>(Node.getNumAttrs());
for (int i = 0; i < nAttrNum; ++i)
{
auto childAttr = Node.openAttribute(i);
//解析读取属性数据
//获取数据类型
auto AttrDataType = childAttr.getDataType();
//获取数据类型大小
unsigned int nDataByte = (unsigned int)AttrDataType.getSize();
boost::scoped_ptr<CAbstractAttrHanlder> pHandler(CreateAttrHandler(childAttr.getTypeClass(), nDataByte));
if (pHandler)
{
pHandler->ReadAttr(childAttr, AttrDataType, pData->AttributeArray);
}
childAttr.close();
}
//获取节点对象个数
int nObjNum = static_cast<int>(Node.getNumObjs());
//遍历子节点信息
for (int i = 0; i < nObjNum; ++i)
{
//NECESSARY_LOG("the node name is [%s],the type is [%d].", Node.getObjnameByIdx(i).c_str(), Node.getObjTypeByIdx(i));
auto SubNodeType = Node.getObjTypeByIdx(i);
switch (SubNodeType)
{
case H5G_GROUP:
{
Hdf5_Wrapper::LP_HDF5_DATA pSubData = new Hdf5_Wrapper::HDF5_DATA;
if (nullptr != pSubData)
{
//添加进去
pData->SubDataArray.push_back(pSubData);
auto ChildGroupNode = Node.openGroup(Node.getObjnameByIdx(i));
RecursiveVisitNode(ChildGroupNode,pSubData);
ChildGroupNode.close();
}
}
break;
case H5G_DATASET:
{
auto childDataset = Node.openDataSet(Node.getObjnameByIdx(i));
Hdf5_Wrapper::LP_HDF5_DATA pSubData = new Hdf5_Wrapper::HDF5_DATA;
if (nullptr != pSubData)
{
pSubData->strKeyName = childDataset.getObjName();
//添加进去
pData->SubDataArray.push_back(pSubData);
//获取数据类型
auto ChildDataSetDataType = childDataset.getDataType();
//获取类型占用字节数
unsigned int nDataByte = (unsigned int)ChildDataSetDataType.getSize();
//判断数据类型
boost::scoped_ptr<CAbstractDataTypeHandler> pHandlder(CDataTypeHandlerFactory::CreateDataTypeHandler(childDataset.getTypeClass(),nDataByte));
if (pHandlder)
{
pHandlder->ReadDataSet(childDataset, pSubData);
}
}
}
break;
default:
break;
}
}
}
void ossim_hdf5::iterateGroupForDatasetNames( H5::H5File* file,
const std::string& groupName,
std::vector<std::string>& datasetNames,
ossim_uint32& recursedCount )
{
if ( file && groupName.size() )
{
++recursedCount;
// std::cout << "iterateGroup: " << groupName << std::endl;
H5::Group* group = new H5::Group( file->openGroup(groupName) );
const hsize_t OBJ_COUNT = group->getNumObjs();
for ( hsize_t i = 0; i < OBJ_COUNT; ++i )
{
std::string objName = group->getObjnameByIdx(i);
if ( objName.size() )
{
char separator = '/';
std::string combinedName;
combine( groupName, objName, separator, combinedName );
H5G_obj_t objType = group->getObjTypeByIdx(i);
#if 0
std::cout << "combinedName: " << combinedName
<< "\ngetObjnameByIdx[" << i << "]: " << objName
<< "\ngetObjTypeByIdx[" << i << "]: " << objType
<< std::endl;
#endif
if ( objType == H5G_GROUP )
{
// Recursive call:
if ( recursedCount < ossim_hdf5::MAX_RECURSION_LEVEL )
{
ossim_hdf5::iterateGroupForDatasetNames(
file, combinedName, datasetNames, recursedCount );
}
else
{
ossimNotify(ossimNotifyLevel_WARN)
<< "ossim_hdf5::iterateGroupForDatasetNames WARNING!"
<< "\nMax iterations reached!" << std::endl;
}
}
else if ( objType == H5G_DATASET )
{
datasetNames.push_back( combinedName );
}
else
{
ossimNotify(ossimNotifyLevel_WARN)
<< "ossim_hdf5::iterateGroupForDatasetNames WARNING!"
<< "\nUnhandled object type: " << objType << std::endl;
}
}
}
group->close();
delete group;
group = 0;
--recursedCount;
} // Matches: if ( file )
} // End: void ossim_hdf5::iterateGroupForDatasetNames
void ossim_hdf5::printIterative( H5::H5File* file,
const std::string& groupName,
const std::string& prefix,
ossim_uint32& recursedCount,
std::ostream& out )
{
if ( file && groupName.size() )
{
++recursedCount;
H5::Group* group = new H5::Group( file->openGroup(groupName) );
// Print attributes:
const ossim_uint32 ATTRS_COUNT = group->getNumAttrs();
for ( ossim_uint32 aIdx = 0; aIdx < ATTRS_COUNT; ++aIdx )
{
H5::Attribute attr( group->openAttribute( aIdx ) );
ossim_hdf5::printAttribute( attr, prefix, out );
attr.close();
}
const hsize_t OBJ_COUNT = group->getNumObjs();
for ( hsize_t i = 0; i < OBJ_COUNT; ++i )
{
std::string objName = group->getObjnameByIdx(i);
if ( objName.size() )
{
char separator = '/';
std::string combinedName;
combine( groupName, objName, separator, combinedName );
separator = '.';
std::string combinedPrefix;
combine( prefix, objName, separator, combinedPrefix );
H5G_obj_t objType = group->getObjTypeByIdx(i);
#if 0
std::cout << "combinedName: " << combinedName
<< "\ncombinedPrefix: " << combinedPrefix
<< "\ngetObjnameByIdx[" << i << "]: " << objName
<< "\ngetObjTypeByIdx[" << i << "]: " << objType
<< std::endl;
#endif
if ( objType == H5G_GROUP )
{
// Recursive call:
if ( recursedCount < ossim_hdf5::MAX_RECURSION_LEVEL )
{
ossim_hdf5::printIterative(
file, combinedName, combinedPrefix, recursedCount, out );
}
else
{
ossimNotify(ossimNotifyLevel_WARN)
<< "ossim_hdf5::printIterative WARNING!"
<< "\nMax iterations reached!" << std::endl;
}
}
else if ( objType == H5G_DATASET )
{
printObject( file, combinedName, combinedPrefix, out );
}
else
{
ossimNotify(ossimNotifyLevel_WARN)
<< "ossim_hdf5::printIterative WARNING!"
<< "\nUnhandled object type: " << objType << std::endl;
}
}
}
group->close();
delete group;
group = 0;
--recursedCount;
} // Matches: if ( file )
} // End: void ossim_hdf5::printIterative method.