/usr/include/Field3D/MIPFieldIO.h is in libfield3d-dev 1.6.1-2.
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/*
* Copyright (c) 2009 Sony Pictures Imageworks Inc
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution. Neither the name of Sony Pictures Imageworks nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//----------------------------------------------------------------------------//
/*! \file MIPFieldIO.h
\brief Contains the MIPFieldIO class.
*/
//----------------------------------------------------------------------------//
#ifndef _INCLUDED_Field3D_MIPFieldIO_H_
#define _INCLUDED_Field3D_MIPFieldIO_H_
//----------------------------------------------------------------------------//
#include <string>
#include <boost/intrusive_ptr.hpp>
#include <boost/thread/mutex.hpp>
#include <hdf5.h>
#include "MIPField.h"
#include "Exception.h"
#include "Field3DFile.h"
#include "Hdf5Util.h"
//----------------------------------------------------------------------------//
#include "ns.h"
FIELD3D_NAMESPACE_OPEN
//----------------------------------------------------------------------------//
// MIPFieldIO
//----------------------------------------------------------------------------//
/*! \class MIPFieldIO
\ingroup file_int
Handles IO for a MIPField object
*/
//----------------------------------------------------------------------------//
class MIPFieldIO : public FieldIO
{
public:
// Typedefs ------------------------------------------------------------------
typedef boost::intrusive_ptr<MIPFieldIO> Ptr;
// RTTI replacement ----------------------------------------------------------
typedef MIPFieldIO class_type;
DEFINE_FIELD_RTTI_CONCRETE_CLASS;
static const char* staticClassType()
{
return "MIPFieldIO";
}
// Constructors --------------------------------------------------------------
//! Ctor
MIPFieldIO()
: FieldIO()
{ }
//! Dtor
virtual ~MIPFieldIO()
{ /* Empty */ }
static FieldIO::Ptr create()
{ return Ptr(new MIPFieldIO); }
// From FieldIO --------------------------------------------------------------
//! Reads the field at the given location and tries to create a MIPField
//! object from it. Calls out to readData() for template-specific work.
//! \returns Null if no object was read
virtual FieldBase::Ptr read(hid_t layerGroup,
const std::string &filename,
const std::string &layerPath,
DataTypeEnum typeEnum);
//! Writes the given field to disk. This function calls out to writeInternal
//! once the template type has been determined.
//! \return true if successful, otherwise false
virtual bool write(hid_t layerGroup, FieldBase::Ptr field);
//! Returns the class name
virtual std::string className() const
{ return "MIPField"; }
private:
// Internal methods ----------------------------------------------------------
//! This call writes all the attributes and sets up the data space.
template <template <typename X> class Field_T, class Data_T>
bool writeInternal(hid_t layerGroup,
typename MIPField<Field_T<Data_T> >::Ptr field);
template <template <typename X> class Field_T, class Data_T>
typename MIPField<Field_T<Data_T> >::Ptr
readInternal(hid_t layerGroup, const std::string &filename,
const std::string &layerPath, DataTypeEnum typeEnum);
// Strings -------------------------------------------------------------------
static const int k_versionNumber;
static const std::string k_versionAttrName;
static const std::string k_extentsStr;
static const std::string k_dataWindowStr;
static const std::string k_componentsStr;
static const std::string k_bitsPerComponentStr;
static const std::string k_mipGroupStr;
static const std::string k_levelGroupStr;
static const std::string k_levelsStr;
static const std::string k_baseTypeStr;
// Typedefs ------------------------------------------------------------------
//! Convenience typedef for referring to base class
typedef FieldIO base;
};
//----------------------------------------------------------------------------//
// Implementation details
//----------------------------------------------------------------------------//
namespace detail {
//! We need to instantiate MIPSparseField rather than MIPField<SparseField>.
//! This traits class does that.
template <typename Field_T>
struct MIPInstance;
//! Specialization for sparse field
template <typename Data_T>
struct MIPInstance<SparseField<Data_T> >
{
typedef MIPSparseField<Data_T> type;
};
// Specialization for dense field
template <typename Data_T>
struct MIPInstance<DenseField<Data_T> >
{
typedef MIPDenseField<Data_T> type;
};
}
//----------------------------------------------------------------------------//
// GenericLazyLoadAction
//----------------------------------------------------------------------------//
template <class Field_T>
class GenericLazyLoadAction
: public LazyLoadAction<Field_T>
{
public:
// Typedefs ------------------------------------------------------------------
typedef boost::shared_ptr<GenericLazyLoadAction<Field_T> > Ptr;
typedef std::vector<Ptr> Vec;
// Constructor ---------------------------------------------------------------
GenericLazyLoadAction(const std::string &filename,
const std::string &path,
const DataTypeEnum &typeEnum)
: LazyLoadAction<Field_T>(),
m_filename(filename), m_path(path), m_typeEnum(typeEnum)
{
// Empty
}
~GenericLazyLoadAction()
{ }
// From LazyLoadAction -------------------------------------------------------
virtual typename Field_T::Ptr load() const
{
using namespace Hdf5Util;
hid_t file;
boost::shared_ptr<H5ScopedGopen> levelGroup;
{
// Hold lock while calling H5Fopen
GlobalLock lock(g_hdf5Mutex);
// Open the HDF5 file
file = H5Fopen(m_filename.c_str(), H5F_ACC_RDONLY, H5P_DEFAULT);
if (file < 0) {
throw Exc::NoSuchFileException(m_filename);
}
levelGroup.reset(new H5ScopedGopen(file, m_path));
}
// Instantiate I/O
FieldIO::Ptr io =
ClassFactory::singleton().createFieldIO(Field_T::staticClassName());
// Read the data
FieldBase::Ptr field = io->read(*levelGroup, m_filename,
m_path, m_typeEnum);
{
// Hold lock again
GlobalLock lock(g_hdf5Mutex);
// Close the file
if (H5Fclose(file) < 0) {
Msg::print("Error closing file: " + m_filename);
}
}
// Done
return field_dynamic_cast<Field_T>(field);
}
private:
// Data members --------------------------------------------------------------
//! Filename
const std::string m_filename;
//! Path in file
const std::string m_path;
//! Data type enum
const DataTypeEnum m_typeEnum;
//! HDF5 access mutex
static boost::mutex ms_hdf5Mutex;
};
//----------------------------------------------------------------------------//
// Templated methods
//----------------------------------------------------------------------------//
template <template <typename X> class Field_T, class Data_T>
bool MIPFieldIO::writeInternal(hid_t layerGroup,
typename MIPField<Field_T<Data_T> >::Ptr field)
{
using namespace Exc;
using namespace Hdf5Util;
Box3i ext(field->extents()), dw(field->dataWindow());
// Add extents attribute ---
int extents[6] =
{ ext.min.x, ext.min.y, ext.min.z, ext.max.x, ext.max.y, ext.max.z };
if (!writeAttribute(layerGroup, k_extentsStr, 6, extents[0])) {
throw WriteAttributeException("Couldn't write attribute " + k_extentsStr);
}
// Add data window attribute ---
int dataWindow[6] =
{ dw.min.x, dw.min.y, dw.min.z, dw.max.x, dw.max.y, dw.max.z };
if (!writeAttribute(layerGroup, k_dataWindowStr, 6, dataWindow[0])) {
throw WriteAttributeException("Couldn't write attribute " + k_dataWindowStr);
}
// Add components attribute ---
int components = FieldTraits<Data_T>::dataDims();
if (!writeAttribute(layerGroup, k_componentsStr, 1, components)) {
throw WriteAttributeException("Couldn't write attribute " + k_componentsStr);
}
// Add the bits per component attribute ---
int bits = DataTypeTraits<Data_T>::h5bits();
if (!writeAttribute(layerGroup, k_bitsPerComponentStr, 1, bits)) {
Msg::print(Msg::SevWarning, "Error adding bits per component attribute.");
return false;
}
// Add the base type attribute ---
std::string baseType = Field_T<Data_T>::staticClassName();
if (!writeAttribute(layerGroup, k_baseTypeStr, baseType)) {
throw WriteAttributeException("Couldn't write attribute " + k_baseTypeStr);
}
// Add the mip fields group
H5ScopedGcreate mipGroup(layerGroup, k_mipGroupStr);
// Write number of layers
int numLevels = field->numLevels();
if (!writeAttribute(mipGroup, k_levelsStr, 1, numLevels)) {
throw WriteAttributeException("Couldn't write attribute " + k_levelsStr);
}
// For each level ---
for (size_t i = 0; i < field->numLevels(); i++) {
// Add a named group
H5ScopedGcreate levelGroup(mipGroup, k_levelGroupStr + "." +
boost::lexical_cast<std::string>(i));
// Add the field to the group
std::string className = Field_T<Data_T>::staticClassName();
FieldIO::Ptr io =
ClassFactory::singleton().createFieldIO(className);
io->write(levelGroup, field->mipLevel(i));
}
return true;
}
//----------------------------------------------------------------------------//
template <template <typename X> class Field_T, class Data_T>
typename MIPField<Field_T<Data_T> >::Ptr
MIPFieldIO::readInternal(hid_t layerGroup,
const std::string &filename,
const std::string &layerPath,
DataTypeEnum typeEnum)
{
using namespace detail;
using namespace Exc;
using namespace Hdf5Util;
typedef MIPField<Field_T<Data_T> > MIPType;
typedef GenericLazyLoadAction<Field_T<Data_T> > Action;
// Read extents
Box3i extents;
if (!readAttribute(layerGroup, k_extentsStr, 6, extents.min.x))
throw MissingAttributeException("Couldn't find attribute " +
k_extentsStr);
// Read data window
Box3i dataW;
if (!readAttribute(layerGroup, k_dataWindowStr, 6, dataW.min.x))
throw MissingAttributeException("Couldn't find attribute " +
k_dataWindowStr);
// Read components
int components;
if (!readAttribute(layerGroup, k_componentsStr, 1, components))
throw MissingAttributeException("Couldn't find attribute " +
k_componentsStr);
// Construct the resulting MIP field
typename MIPType::Ptr result(new typename MIPInstance<Field_T<Data_T> >::type);
// Open the MIP field group
H5ScopedGopen mipGroup(layerGroup, k_mipGroupStr);
// Read num levels
int numLevels;
if (!readAttribute(mipGroup, k_levelsStr, 1, numLevels))
throw MissingAttributeException("Couldn't find attribute " + k_levelsStr);
// Read each level ---
std::vector<typename EmptyField<Data_T>::Ptr> proxies;
typename LazyLoadAction<Field_T<Data_T> >::Vec actions;
for (int i = 0; i < numLevels; i++) {
// Open level group
std::string levelGroupStr =
k_levelGroupStr + "." + boost::lexical_cast<std::string>(i);
H5ScopedGopen levelGroup(mipGroup, levelGroupStr);
// Read the proxy
typename EmptyField<Data_T>::Ptr proxy(new EmptyField<Data_T>);
// Read extents
if (!readAttribute(levelGroup, k_extentsStr, 6, extents.min.x))
throw MissingAttributeException("Couldn't find attribute " +
k_extentsStr);
// Read data window
if (!readAttribute(levelGroup, k_dataWindowStr, 6, dataW.min.x))
throw MissingAttributeException("Couldn't find attribute " +
k_dataWindowStr);
// Configure proxy with resolution
proxy->setSize(extents, dataW);
proxies.push_back(proxy);
// Make the lazy load action
std::string fullPath =
layerPath + "/" + k_mipGroupStr + "/" + levelGroupStr;
typename Action::Ptr action(new Action(filename, fullPath, typeEnum));
actions.push_back(action);
}
result->setupLazyLoad(proxies, actions);
return result;
}
//----------------------------------------------------------------------------//
// Template instantiations
//----------------------------------------------------------------------------//
template <typename Field_T>
boost::mutex GenericLazyLoadAction<Field_T>::ms_hdf5Mutex;
//----------------------------------------------------------------------------//
FIELD3D_NAMESPACE_HEADER_CLOSE
//----------------------------------------------------------------------------//
#endif // Include guard
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