MeVis/Foundation/Sources/DicomTree/MLDicomTree/DCMTree_FileCache.h

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// **InsertLicense** code
//-----------------------------------------------------------------------------

#ifndef DCMTREE_FILECHACHE_H
#define DCMTREE_FILECHACHE_H

#include "DCMTree_TagId.h"

#include <string>

namespace DCMTree
{
  // Abstract base class for a DICOM tag cache
  // a DICOM tag can be left in file and read on demand
  // The file cache class handles the read requests

  class DCMTREE_EXPORT FileCache
  {
  public:
    // init the file cache for filename filename and the DICOM tag id
    virtual void init(std::string const & filename, TagId const & id) =0;
    virtual bool isInitialized() const =0;
    // copy DICOM attribute value to buffer dest with size bufSize
    // caller needs to prepare buffer with right size
    // For values with multiple entries (especially multiframe images)
    // idx is the index of the requested value
    virtual bool getValue(boost::uint32_t idx, unsigned char *dest, boost::uint32_t bufSize) =0;
    virtual bool getValue(boost::uint32_t idx, unsigned char *dest, boost::uint32_t bufSize,
                          std::string & colorModel, unsigned int & fragment) =0;
  };
}

#endif