Exiv2::BlockMap Class Reference

Utility class provides the block mapping to the part of data. This avoids allocating a single contiguous block of memory to the big data. More...

Public Types
enum	blockType_e { bNone, bKnown, bMemory }
	the status of the block.

Creators
	BlockMap ()
	Default constructor. the init status of the block is bNone.
	~BlockMap ()
	Destructor. Releases all managed memory.
void	populate (byte *source, size_t num)
	Populate the block. More...
void	markKnown (size_t num)
	Change the status to bKnow. bKnow blocks do not contain the data, but they keep the size of data. This avoids allocating memory for parts of the file that contain image-date (non-metadata/pixel data) which never change in exiv2. More...
bool	isNone () const
bool	isInMem () const
bool	isKnown () const
byte *	getData () const
size_t	getSize () const

Detailed Description

Utility class provides the block mapping to the part of data. This avoids allocating a single contiguous block of memory to the big data.

Member Function Documentation

markKnown()

void Exiv2::BlockMap::markKnown ( size_t  num )

inline

Change the status to bKnow. bKnow blocks do not contain the data, but they keep the size of data. This avoids allocating memory for parts of the file that contain image-date (non-metadata/pixel data) which never change in exiv2.

Parameters

num	The size of the data

Referenced by Exiv2::RemoteIo::populateFakeData().

populate()

void Exiv2::BlockMap::populate ( byte *  source, size_t  num  )

inline

Populate the block.

Parameters

source	The data populate to the block
num	The size of data

Referenced by Exiv2::RemoteIo::open().

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The documentation for this class was generated from the following file:

• basicio.cpp