class OSGDB_EXPORT osgDB::Registry

Registry is a singleton factory which stores the reader/writers which are linked in at runtime for reading non-native file formats.

Inheritance:

Public Methods

static Registry* instance()

void readCommandLine(osg::ArgumentParser& commandLine)

read the command line arguments

void addFileExtensionAlias(const std::string mapExt, const std::string toExt)

register an fileextension alias to mapExt toExt, the later should the the extension name of the readerwriter plugin library.

void addDotOsgWrapper(DotOsgWrapper* wrapper)

void removeDotOsgWrapper(DotOsgWrapper* wrapper)

void addReaderWriter(ReaderWriter* rw)

void removeReaderWriter(ReaderWriter* rw)

std::string createLibraryNameForFile(const std::string& fileName)

create the platform specific library name associated with file

std::string createLibraryNameForExtension(const std::string& ext)

create the platform specific library name associated with file extension

std::string createLibraryNameForNodeKit(const std::string& name)

create the platform specific library name associated with nodekit library name

bool loadLibrary(const std::string& fileName)

find the library in the SG_LIBRARY_PATH and load it

bool closeLibrary(const std::string& fileName)

close the attached library with specified name

ReaderWriter* getReaderWriterForExtension(const std::string& ext)

get a reader writer which handles specified extension

osg::Object* readObjectOfType(const osg::Object& compObj, Input& fr)

osg::Object* readObjectOfType(const basic_type_wrapper &btw, Input& fr)

osg::Object* readObject(Input& fr)

osg::Image* readImage(Input& fr)

osg::Drawable* readDrawable(Input& fr)

osg::StateAttribute* readStateAttribute(Input& fr)

osg::Node* readNode(Input& fr)

bool writeObject(const osg::Object& obj, Output& fw)

ReaderWriter::ReadResult readObject(const std::string& fileName, bool useObjectCache)

ReaderWriter::WriteResult writeObject(const osg::Object& obj, const std::string& fileName)

ReaderWriter::ReadResult readImage(const std::string& fileName, bool useObjectCache)

ReaderWriter::WriteResult writeImage(const osg::Image& obj, const std::string& fileName)

ReaderWriter::ReadResult readNode(const std::string& fileName, bool useObjectCache)

ReaderWriter::WriteResult writeNode(const osg::Node& node, const std::string& fileName)

void setCreateNodeFromImage(bool flag)

bool getCreateNodeFromImage() const

void setOptions(ReaderWriter::Options* opt)

ReaderWriter::Options* getOptions()

const ReaderWriter::Options* getOptions() const

void initFilePathLists()

initilize both the Data and Library FilePaths, by default called by the constructor, so it should only be required if you want to force the re-reading of environmental variables

void initDataFilePathList()

initilize the Data FilePath by reading the OSG_FILE_PATH environmental variable

void setDataFilePathList(const FilePathList& filepath)

Set the data file path using a list of paths stored in a FilePath, which is used when search for data files

void setDataFilePathList(const std::string& paths)

Set the data file path using a single string deliminated either with ';' (Windows) or ':' (All other platforms), which is used when search for data files

FilePathList& getDataFilePathList()

get the data file path which is used when search for data files

const FilePathList& getDataFilePathList() const

get the const data file path which is used when search for data files

void initLibraryFilePathList()

initilize the Library FilePath by reading the OSG_LIBRARY_PATH and the appropriate system environmental variables

void setLibraryFilePathList(const FilePathList& filepath)

Set the library file path using a list of paths stored in a FilePath, which is used when search for data files

void setLibraryFilePathList(const std::string& paths)

Set the library file path using a single string deliminated either with ';' (Windows) or ':' (All other platforms), which is used when search for data files

FilePathList& getLibraryFilePathList()

get the library file path which is used when search for library (dso/dll's) files

const FilePathList& getLibraryFilePathList() const

get the const library file path which is used when search for library (dso/dll's) files

static void convertStringPathIntoFilePathList(const std::string& paths, FilePathList& filepath)

convert a string containing a list of paths deliminated either with ';' (Windows) or ':' (All other platforms) into FilePath represetation

void updateTimeStampOfObjectsInCacheWithExtenalReferences(double currentTime)

For each object in the cache which has an reference count greater than 1 (and therefore referenced by elsewhere in the application) set the time stamp for that object in the cache to specified time.

void removeExpiredObjectsInCache(double expiryTime)

Removed object in the cache which have a time stamp at or before the specified expiry time.

void clearObjectCache()

Remove all objects in the cache regardless of having external references or expiry times

Protected Fields

bool _createNodeFromImage

DotOsgWrapperMap _objectWrapperMap

DotOsgWrapperMap _imageWrapperMap

DotOsgWrapperMap _drawableWrapperMap

DotOsgWrapperMap _stateAttrWrapperMap

DotOsgWrapperMap _nodeWrapperMap

DotOsgWrapperMap _classNameWrapperMap

ReaderWriterList _rwList

DynamicLibraryList _dlList

bool _openingLibrary

ExtensionAliasMap _extAliasMap

osg::ref_ptr<ReaderWriter::Options> _options

FilePathList _dataFilePath

FilePathList _libraryFilePath

ObjectCache _objectCache

Protected Methods

virtual ~Registry()

Registry()

constructor is private, as its a singleton, preventing construction other than via the instance() method and therefore ensuring only one copy is ever constructed

DynamicLibraryList::iterator getLibraryItr(const std::string& fileName)

get the attached library with specified name

DynamicLibrary* getLibrary(const std::string& fileName)

osg::Object* readObject(DotOsgWrapperMap& dowMap, Input& fr)

void eraseWrapper(DotOsgWrapperMap& wrappermap, DotOsgWrapper* wrapper)

ReaderWriter::ReadResult readObject(const std::string& fileName)

ReaderWriter::ReadResult readImage(const std::string& fileName)

ReaderWriter::ReadResult readNode(const std::string& fileName)

Protected Members

typedef std::map< std::string, osg::ref_ptr<DotOsgWrapper> > DotOsgWrapperMap

typedef std::vector< osg::ref_ptr<ReaderWriter> > ReaderWriterList

typedef std::vector< osg::ref_ptr<DynamicLibrary> > DynamicLibraryList

typedef std::map< std::string, std::string> ExtensionAliasMap

typedef std::pair<osg::ref_ptr<osg::Object>, double > ObjectTimeStampPair

typedef std::map<std::string, ObjectTimeStampPair > ObjectCache

Documentation

Registry is a singleton factory which stores the reader/writers which are linked in at runtime for reading non-native file formats.

The RegisterDotOsgWrapperProxy can be used to automatically register DotOsgWrappers, at runtime with the Registry. A DotOsgWrapper encapsulates the functions that can read and write to the .osg for each osg::Object.

The RegisterReaderWriterProxy can be used to automatically register at runtime a reader/writer with the Registry.

static Registry* instance()

void readCommandLine(osg::ArgumentParser& commandLine)

read the command line arguments

void addFileExtensionAlias(const std::string mapExt, const std::string toExt)

register an fileextension alias to mapExt toExt, the later should the the extension name of the readerwriter plugin library. For example to map .tif files to the tiff loader, use addExtAlias("tif","tiff") which will enable .tif to be read by the libdb_tiff readerwriter plugin.

void addDotOsgWrapper(DotOsgWrapper* wrapper)

void removeDotOsgWrapper(DotOsgWrapper* wrapper)

void addReaderWriter(ReaderWriter* rw)

void removeReaderWriter(ReaderWriter* rw)

std::string createLibraryNameForFile(const std::string& fileName)

create the platform specific library name associated with file

std::string createLibraryNameForExtension(const std::string& ext)

create the platform specific library name associated with file extension

std::string createLibraryNameForNodeKit(const std::string& name)

create the platform specific library name associated with nodekit library name

bool loadLibrary(const std::string& fileName)

find the library in the SG_LIBRARY_PATH and load it

bool closeLibrary(const std::string& fileName)

close the attached library with specified name

ReaderWriter* getReaderWriterForExtension(const std::string& ext)

get a reader writer which handles specified extension

osg::Object* readObjectOfType(const osg::Object& compObj, Input& fr)

osg::Object* readObjectOfType(const basic_type_wrapper &btw, Input& fr)

osg::Object* readObject(Input& fr)

osg::Image* readImage(Input& fr)

osg::Drawable* readDrawable(Input& fr)

osg::StateAttribute* readStateAttribute(Input& fr)

osg::Node* readNode(Input& fr)

bool writeObject(const osg::Object& obj, Output& fw)

ReaderWriter::ReadResult readObject(const std::string& fileName, bool useObjectCache)

ReaderWriter::WriteResult writeObject(const osg::Object& obj, const std::string& fileName)

ReaderWriter::ReadResult readImage(const std::string& fileName, bool useObjectCache)

ReaderWriter::WriteResult writeImage(const osg::Image& obj, const std::string& fileName)

ReaderWriter::ReadResult readNode(const std::string& fileName, bool useObjectCache)

ReaderWriter::WriteResult writeNode(const osg::Node& node, const std::string& fileName)

void setCreateNodeFromImage(bool flag)

bool getCreateNodeFromImage() const

void setOptions(ReaderWriter::Options* opt)

ReaderWriter::Options* getOptions()

const ReaderWriter::Options* getOptions() const

void initFilePathLists()

initilize both the Data and Library FilePaths, by default called by the constructor, so it should only be required if you want to force the re-reading of environmental variables

void initDataFilePathList()

initilize the Data FilePath by reading the OSG_FILE_PATH environmental variable

void setDataFilePathList(const FilePathList& filepath)

Set the data file path using a list of paths stored in a FilePath, which is used when search for data files

void setDataFilePathList(const std::string& paths)

Set the data file path using a single string deliminated either with ';' (Windows) or ':' (All other platforms), which is used when search for data files

FilePathList& getDataFilePathList()

get the data file path which is used when search for data files

const FilePathList& getDataFilePathList() const

get the const data file path which is used when search for data files

void initLibraryFilePathList()

initilize the Library FilePath by reading the OSG_LIBRARY_PATH and the appropriate system environmental variables

void setLibraryFilePathList(const FilePathList& filepath)

Set the library file path using a list of paths stored in a FilePath, which is used when search for data files

void setLibraryFilePathList(const std::string& paths)

Set the library file path using a single string deliminated either with ';' (Windows) or ':' (All other platforms), which is used when search for data files

FilePathList& getLibraryFilePathList()

get the library file path which is used when search for library (dso/dll's) files

const FilePathList& getLibraryFilePathList() const

get the const library file path which is used when search for library (dso/dll's) files

static void convertStringPathIntoFilePathList(const std::string& paths, FilePathList& filepath)

convert a string containing a list of paths deliminated either with ';' (Windows) or ':' (All other platforms) into FilePath represetation

void updateTimeStampOfObjectsInCacheWithExtenalReferences(double currentTime)

For each object in the cache which has an reference count greater than 1 (and therefore referenced by elsewhere in the application) set the time stamp for that object in the cache to specified time. This would typically be called once per frame by applications which are doing database paging, and need to prune objects that are no longer required. Time value is time in sceonds.

void removeExpiredObjectsInCache(double expiryTime)

Removed object in the cache which have a time stamp at or before the specified expiry time. This would typically be called once per frame by applications which are doing database paging, and need to prune objects that are no longer required, and called after the a called after the call to updateTimeStampOfObjectsInCacheWithExtenalReferences(currentTime). Note, the currentTime is not the expiryTime, one would typically set the expiry time to a fixed amount of time before currentTime, such as expiryTime = currentTime-10.0. Time value is time in sceonds.

void clearObjectCache()

Remove all objects in the cache regardless of having external references or expiry times

virtual ~Registry()

typedef std::map< std::string, osg::ref_ptr<DotOsgWrapper> > DotOsgWrapperMap

typedef std::vector< osg::ref_ptr<ReaderWriter> > ReaderWriterList

typedef std::vector< osg::ref_ptr<DynamicLibrary> > DynamicLibraryList

typedef std::map< std::string, std::string> ExtensionAliasMap

typedef std::pair<osg::ref_ptr<osg::Object>, double > ObjectTimeStampPair

typedef std::map<std::string, ObjectTimeStampPair > ObjectCache

Registry()

constructor is private, as its a singleton, preventing construction other than via the instance() method and therefore ensuring only one copy is ever constructed

DynamicLibraryList::iterator getLibraryItr(const std::string& fileName)

get the attached library with specified name

DynamicLibrary* getLibrary(const std::string& fileName)

bool _createNodeFromImage

osg::Object* readObject(DotOsgWrapperMap& dowMap, Input& fr)

void eraseWrapper(DotOsgWrapperMap& wrappermap, DotOsgWrapper* wrapper)

ReaderWriter::ReadResult readObject(const std::string& fileName)

ReaderWriter::ReadResult readImage(const std::string& fileName)

ReaderWriter::ReadResult readNode(const std::string& fileName)

DotOsgWrapperMap _objectWrapperMap

DotOsgWrapperMap _imageWrapperMap

DotOsgWrapperMap _drawableWrapperMap

DotOsgWrapperMap _stateAttrWrapperMap

DotOsgWrapperMap _nodeWrapperMap

DotOsgWrapperMap _classNameWrapperMap

ReaderWriterList _rwList

DynamicLibraryList _dlList

bool _openingLibrary

ExtensionAliasMap _extAliasMap

osg::ref_ptr<ReaderWriter::Options> _options

FilePathList _dataFilePath

FilePathList _libraryFilePath

ObjectCache _objectCache

This class has no child classes.

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