mlDICOMCachedIOPixelFrameCache.h

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// Copyright (c) Fraunhofer MEVIS, Germany. All rights reserved.
// **InsertLicense** code
//----------------------------------------------------------------------------------

//----------------------------------------------------------------------------------
 
#pragma once
 
#include "MLDICOMCachedIOSystem.h"
#include <mlTypeDefs.h>
#include <DCMTree_Lib.h>
#include "DCMTree_MFPixelTag.h"
 
ML_START_NAMESPACE
  
  template<typename CT> class DICOMCachedIOFileHandleBase;

  typedef DICOMCachedIOFileHandleBase<char> DICOMCachedIOFileHandle;
ML_END_NAMESPACE

class MLDICOMCachedIOPixelFrameCacheContainer;
class MLMFPixDataFramesCacheEntry;

class MLDICOMCachedIO_EXPORT MLDICOMCachedIOPixelFrameCache {
 
public:
  MLDICOMCachedIOPixelFrameCache();

  MLDICOMCachedIOPixelFrameCache(const MLDICOMCachedIOPixelFrameCache&) = default;
  
  MLDICOMCachedIOPixelFrameCache& operator=(const MLDICOMCachedIOPixelFrameCache&) = default;

  ~MLDICOMCachedIOPixelFrameCache();
  
  static MLDICOMCachedIOPixelFrameCache singletonProxy();

  void removeAssociatedEntries(const ML_NAMESPACE::DICOMCachedIOFileHandle &fileHandle);

  bool hasMultiFrameCache(const ML_NAMESPACE::DICOMCachedIOFileHandle &fileHandle,
                          size_t numFrames) const;

  void loadMultiFramesInCache(DCMTree::Const_TreePtr                      mfTree,
                              const ML_NAMESPACE::DICOMCachedIOFileHandle &fileNamePath,
                              size_t                                      &numFoundFrames,
                              std::string                                 &warnDesc,
                              std::string                                 &errDesc);
  
  DCMTree::MFPixelTag::pixel_cont_t getCachedPixFrameData(const ML_NAMESPACE::DICOMCachedIOFileHandle &fileName,
                                                          size_t                                      frameIdx,
                                                          DCMTree::MFPixelTag::pixel_cont_t           pixFrameData,
                                                          size_t                                      numFrames);
  
  MLMFPixDataFramesCacheEntry* getCachedPixFrameCacheEntry(const ML_NAMESPACE::DICOMCachedIOFileHandle &fileName);

  void clear();

  const MLDICOMCachedIOPixelFrameCacheContainer * getCachedIOPixelFrameCacheContainer() const;
 
private:
  
  static MLDICOMCachedIOPixelFrameCacheContainer *_pixelFrameCachePtr;

  static MLuint _instanceCounter;
  
  MLDICOMCachedIOPixelFrameCacheContainer& _getCachedIOPixelFrameCacheContainer() const;
};