itkVTKImageIO.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  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.
 *
 *=========================================================================*/
/*=========================================================================
 *
 *  Portions of this file are subject to the VTK Toolkit Version 3 copyright.
 *
 *  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
 *
 *  For complete copyright, license and disclaimer of warranty information
 *  please refer to the NOTICE file at the top of the ITK source tree.
 *
 *=========================================================================*/
#ifndef itkVTKImageIO_h
#define itkVTKImageIO_h
#include "ITKIOVTKExport.h"


#include <fstream>
#include "itkStreamingImageIOBase.h"

namespace itk
{
class ITKIOVTK_EXPORT VTKImageIO:
  public StreamingImageIOBase
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(VTKImageIO);

  using Self = VTKImageIO;
  using Superclass = StreamingImageIOBase;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  itkNewMacro(Self);

  itkTypeMacro(VTKImageIO, StreamingImageIOBase);

// see super class for documentation
  //
  // overidden to return true only when supported
  bool CanStreamWrite() override;

  // see super class for documentation
  //
  // overidden to return true only when supported
  bool CanStreamRead() override;


  /*-------- This part of the interface deals with reading data. ------ */

  bool CanReadFile(const char *) override;

  void ReadImageInformation() override;

  void Read(void *buffer) override;

  /*-------- This part of the interfaces deals with writing data. ----- */

  bool CanWriteFile(const char *) override;

  void WriteImageInformation() override {}

  void Write(const void *buffer) override;

  SizeType GetHeaderSize() const override { return this->m_HeaderSize; }

protected:
  VTKImageIO();
  ~VTKImageIO() override;

  void PrintSelf(std::ostream & os, Indent indent) const override;

  void InternalReadImageInformation(std::ifstream & file);

  // Internal function to get next line from a given file (*.vtk)
  int GetNextLine(std::ifstream& ifs, std::string& line, bool lowerCase = true, SizeValueType count= 0);

  void WriteImageInformation(const void *buffer);

  void ReadHeaderSize(std::ifstream & file);

  void ReadBufferAsASCII(std::istream & os, void *buffer,
                         IOComponentType ctype,
                         SizeType numberOfBytesToBeRead) override;

  void WriteBufferAsASCII(std::ostream & os, const void *buffer,
                          IOComponentType ctype,
                          SizeType numberOfBytesToWrite) override;

  virtual void ReadSymmetricTensorBufferAsBinary(std::istream& os,
    void *buffer,
    StreamingImageIOBase::SizeType num);

  virtual void WriteSymmetricTensorBufferAsBinary(std::ostream& os,
    const void *buffer,
    StreamingImageIOBase::SizeType num);

private:
  void SetPixelTypeFromString(const std::string & pixelType);
  std::string GetComponentTypeAsString(IOComponentType);

  SizeType GetIORegionSizeInPixels() const;

  SizeType GetIORegionSizeInBytes() const;

  SizeType GetIORegionSizeInComponents() const;

  SizeType m_HeaderSize;
};
} // end namespace itk

#endif // itkVTKImageIO_h