itkHDF5TransformIO.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkHDF5TransformIO_h
#define __itkHDF5TransformIO_h
#include "itkTransformIOBase.h"

#include <string>

// Avoids KWStyle error from forward declaration below.
namespace itk
{
}

// Forward declaration of class H5::H5File
namespace H5
{
class H5File;
}

namespace itk
{


struct HDF5CommonPathNames
  {
  //
  // HDF uses hierarchical paths to find particular data
  // in a file. These strings are used by both reading and
  // writing.
  static const std::string transformGroupName;
  static const std::string transformTypeName;
  static const std::string transformFixedName;
  static const std::string transformParamsName;
  static const std::string ItkVersion;
  static const std::string HDFVersion;
  static const std::string OSName;
  static const std::string OSVersion;
  };


template< typename TInternalComputationValueType >
class HDF5TransformIOTemplate:public TransformIOBaseTemplate< TInternalComputationValueType >,
private HDF5CommonPathNames
{
public:
  typedef HDF5TransformIOTemplate                                  Self;
  typedef TransformIOBaseTemplate< TInternalComputationValueType > Superclass;
  typedef SmartPointer< Self >                                     Pointer;
  typedef typename Superclass::TransformType                       TransformType;
  typedef typename Superclass::TransformPointer                    TransformPointer;
  typedef typename Superclass::TransformListType                   TransformListType;
  typedef typename TransformType::ParametersType                   ParametersType;

  typedef typename TransformIOBaseTemplate
                      <TInternalComputationValueType>::ConstTransformListType
                                                                ConstTransformListType;

  itkTypeMacro( HDF5TransformIOTemplate, TransformIOBaseTemplate );
  itkNewMacro( Self );

  virtual bool CanReadFile(const char *);

  virtual bool CanWriteFile(const char *);

  virtual void Read();

  virtual void Write();

protected:
  HDF5TransformIOTemplate();
  virtual ~HDF5TransformIOTemplate();

private:
  ParametersType ReadParameters(const std::string &DataSetName);

  void WriteParameters(const std::string &name,
                       const ParametersType &parameters);

  void WriteString(const std::string &path, const std::string &value);
  void WriteString(const std::string &path, const char *value);
  void WriteOneTransform(const int transformIndex,
                         const TransformType *transform);

  H5::H5File *m_H5File;
};
extern const std::string  GetTransformName(int);

typedef HDF5TransformIOTemplate< double > HDF5TransformIO;

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkHDF5TransformIO.hxx"
#endif

#endif // __itkHDF5TransformIO_h