/usr/include/ossim/parallel/ossimImageHandlerMtAdaptor.h is in libossim-dev 1.8.16-4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// OSSIM -- Open Source Software Image Map
//
// LICENSE: See top level LICENSE.txt file.
//
// AUTHOR: Oscar Kramer
//
//**************************************************************************************************
// $Id$
#ifndef ossimImageHandlerMtAdaptor_HEADER
#define ossimImageHandlerMtAdaptor_HEADER 1
#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/imaging/ossimCacheTileSource.h>
#include <OpenThreads/Thread>
//**************************************************************************************************
//! Intended mainly to provide a mechanism for mutex-locking access to a shared resource during
//! a getTile operation on an ossimImageHandler. This is needed for multi-threaded implementation.
//**************************************************************************************************
class OSSIMDLLEXPORT ossimImageHandlerMtAdaptor : public ossimImageHandler
{
public:
static const char* ADAPTEE_ID_KW;
ossimImageHandlerMtAdaptor(ossimImageHandler* adaptee = 0);
//! Sets the handler being adapted.
void setAdaptee(ossimImageHandler* handler);
//! Only an ossimImageHandler is allowed as input here.
virtual bool canConnectMyInputTo(ossim_int32 i, const ossimConnectableObject* obj) const;
//! Intercepts the getTile call intended for the adaptee and sets a mutex lock around the
//! adaptee's getTile call.
virtual ossimRefPtr<ossimImageData> getTile(const ossimIpt& origin, ossim_uint32 resLevel=0);
//! Intercepts the getTile call intended for the adaptee and sets a mutex lock around the
//! adaptee's getTile call.
virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& rect, ossim_uint32 resLevel=0);
//! Intercepts the getTile call intended for the adaptee and sets a mutex lock around the
//! adaptee's getTile call.
virtual bool getTile(ossimImageData* result, ossim_uint32 resLevel=0);
//! Method to save the state of an object to a keyword list.
//! Return true if ok or false on error.
virtual bool saveState(ossimKeywordlist& kwl, const char* prefix=0)const;
//! Method to the load (recreate) the state of an object from a keyword
//! list. Return true if ok or false on error.
virtual bool loadState(const ossimKeywordlist& kwl, const char* prefix=0);
// The following are virtuals in the base class. Implemented here as pass-through to adaptee
virtual ossim_uint32 getNumberOfInputBands() const;
virtual bool isOpen() const;
virtual bool open();
virtual ossim_uint32 getNumberOfLines(ossim_uint32 resLevel = 0) const;
virtual ossim_uint32 getNumberOfSamples(ossim_uint32 resLevel = 0) const;
virtual ossim_uint32 getImageTileWidth() const;
virtual ossim_uint32 getImageTileHeight() const;
virtual ossimString getLongName() const;
virtual ossimString getShortName() const;
virtual void close();
virtual ossim_uint32 getNumberOfOutputBands() const;
virtual ossim_uint32 getNumberOfDecimationLevels() const;
virtual ossimScalarType getOutputScalarType() const;
virtual ossim_uint32 getTileWidth() const;
virtual ossim_uint32 getTileHeight() const;
virtual ossim_float64 getMinPixelValue(ossim_uint32 band=0)const;
virtual ossim_float64 getMaxPixelValue(ossim_uint32 band=0)const;
virtual ossim_float64 getNullPixelValue(ossim_uint32 band=0)const;
double d_getTileT;
protected:
//! Protected destructor forces using reference pointer for instantiation.
virtual ~ossimImageHandlerMtAdaptor();
ossimRefPtr<ossimImageHandler> m_adaptedHandler;
ossimRefPtr<ossimCacheTileSource> m_cache;
mutable OpenThreads::Mutex m_mutex;
bool d_useCache;
bool d_useFauxTile;
ossimRefPtr<ossimImageData> d_fauxTile;
friend class ossimMtDebug;
TYPE_DATA
};
#endif
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