gdcmStreamImageReader.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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 GDCMSTREAMIMAGEREADER_H
#define GDCMSTREAMIMAGEREADER_H
 
#include "gdcmReader.h"
 
namespace gdcm
{
 
class MediaStorage;
class GDCM_EXPORT StreamImageReader
{
 
public:
  StreamImageReader();
  virtual ~StreamImageReader();
 
  void SetFileName(const char* inFileName);
  void SetStream(std::istream& inStream);
 
  std::vector<unsigned int> GetDimensionsValueForResolution( unsigned int  );
 
  void DefinePixelExtent(uint16_t inXMin, uint16_t inXMax,
    uint16_t inYMin, uint16_t inYMax, uint16_t inZMin = 0, uint16_t inZMax = 1);
 
  uint32_t DefineProperBufferLength() const;
 
  bool Read(char* inReadBuffer, const std::size_t& inBufferLength);
 
  bool CanReadImage() const;
 
  virtual bool ReadImageInformation();
 
  File const & GetFile() const;
 
protected:
private:
  //contains a reader for being able to ReadUpToTag
  //however, we don't want the user to be able to call Read
  //either directly or via a parent class call, so we hide the reader in here.
  Reader mReader;
 
  std::streamoff mFileOffset; //the file offset for getting header information
#if 0
  std::streamoff mFileOffset1;
#endif
  DataSet mHeaderInformation; //all the non-pixel information
 
  //for thread safety, these should not be stored here, but should be used
  //for every read subregion operation.
  uint16_t mXMin, mYMin, mXMax, mYMax, mZMin, mZMax;
 
  bool ReadImageSubregionRAW(char* inReadBuffer, const std::size_t& inBufferLength);
 
  bool ReadImageSubregionJpegLS(char* inReadBuffer, const std::size_t& inBufferLength);
};
 
} // end namespace gdcm
 
#endif //GDCMSTREAMIMAGEREADER_H