proland::OrthoCPUProducer Class Reference
[ortho]

A TileProducer to load any kind of texture tile from disk to CPU memory. More...

#include <OrthoCPUProducer.h>

List of all members.

Public Member Functions
	OrthoCPUProducer (ptr< TileCache > cache, const char *name)
	Creates a new OrthoCPUProducer.
virtual	~OrthoCPUProducer ()
	Deletes this OrthoCPUProducer.
bool	isCompressed ()
	Returns true if the produced tiles are compressed in DXT format.
Protected Member Functions
	OrthoCPUProducer ()
	Creates an uninitialized OrthoCPUProducer.
virtual void	init (ptr< TileCache > cache, const char *name)
	Initializes this OrthoCPUProducer.
Private Member Functions
int	getTileId (int level, int tx, int ty)
	Returns the id of the given tile.
Private Attributes
string	name
	The name of the file containing the residual tiles to load.
int	channels
	The number of components per pixel in the tiles to load.
int	tileSize
	The size of the tiles to load, without borders.
int	border
	The size in pixels of the border around each tile.
int	maxLevel
	The maximum level of the stored tiles on disk (inclusive).
bool	dxt
	true if the produced tiles are compressed in DXT format.
int	header
	Offset of the first stored tile on disk.
long long *	offsets
	The offsets of each tile on disk, relatively to offset, for each tile id (see getTileId).
void *	mutex
	A mutex used to serializes accesses to the file storing the tiles.
FILE *	tileFile
	The file storing the tiles on disk.
Static Private Attributes
static void *	key
	A key to store thread specific buffers used to produce the tiles.

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Detailed Description

A TileProducer to load any kind of texture tile from disk to CPU memory.

See Ortho CPU producer.

Authors:

Eric Bruneton, Antoine Begault

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Constructor & Destructor Documentation

proland::OrthoCPUProducer::OrthoCPUProducer	(	ptr< TileCache >	cache,
		const char *	name
	)

Creates a new OrthoCPUProducer.

Parameters:

	cache	the cache to store the produced tiles. The underlying storage must be a CPUTileStorage of unsigned char type. The size of tiles in this storage size must be equal to the size of the tiles stored on disk, borders included.
	name	the name of the file containing the tiles to load.

virtual proland::OrthoCPUProducer::~OrthoCPUProducer

(

)

[virtual]

Deletes this OrthoCPUProducer.

proland::OrthoCPUProducer::OrthoCPUProducer

(

)

[protected]

Creates an uninitialized OrthoCPUProducer.

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Member Function Documentation

int proland::OrthoCPUProducer::getTileId	(	int	level,
		int	tx,
		int	ty
	)			[private]

Returns the id of the given tile.

This id is used to find the offset the tile data on disk, using offsets.

Parameters:

	level	the level of the tile.
	tx	the logical x coordinate of the tile.
	ty	the logical y coordinate of the tile.

Returns:

the id of the given tile.

virtual void proland::OrthoCPUProducer::init	(	ptr< TileCache >	cache,
		const char *	name
	)			[protected, virtual]

Initializes this OrthoCPUProducer.

Parameters:

	cache	the cache to store the produced tiles. The underlying storage must be a CPUTileStorage of unsigned char type. The size of tiles in this storage size must be equal to the size of the tiles stored on disk, borders included.
	name	the name of the file containing the tiles to load.

bool proland::OrthoCPUProducer::isCompressed

(

)

Returns true if the produced tiles are compressed in DXT format.

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Member Data Documentation

int proland::OrthoCPUProducer::border [private]

The size in pixels of the border around each tile.

A tile contains (tileSize+4)*(tileSize+4)*channels samples.

int proland::OrthoCPUProducer::channels [private]

The number of components per pixel in the tiles to load.

bool proland::OrthoCPUProducer::dxt [private]

true if the produced tiles are compressed in DXT format.

int proland::OrthoCPUProducer::header [private]

Offset of the first stored tile on disk.

The offsets indicated in the tile offsets array offsets are relative to this offset.

void* proland::OrthoCPUProducer::key [static, private]

A key to store thread specific buffers used to produce the tiles.

int proland::OrthoCPUProducer::maxLevel [private]

The maximum level of the stored tiles on disk (inclusive).

void* proland::OrthoCPUProducer::mutex [private]

A mutex used to serializes accesses to the file storing the tiles.

string proland::OrthoCPUProducer::name [private]

The name of the file containing the residual tiles to load.

long long* proland::OrthoCPUProducer::offsets [private]

The offsets of each tile on disk, relatively to offset, for each tile id (see getTileId).

FILE* proland::OrthoCPUProducer::tileFile [private]

The file storing the tiles on disk.

int proland::OrthoCPUProducer::tileSize [private]

The size of the tiles to load, without borders.

A tile contains (tileSize+4)*(tileSize+4)*channels samples.