TileManager Class Reference

Class to manage access to the tile cache. More...

#include <TileManager.h>

Public Member Functions
	TileManager (Cache *tc, IIPImage *im, Compressor *c, Logger *s, int l)
	Constructor.
RawTile	getTile (int resolution, int tile, int xangle, int yangle, int layers, ImageEncoding c)
	Get a tile from the cache.
RawTile	getRegion (unsigned int res, int xangle, int yangle, int layers, unsigned int x, unsigned int y, unsigned int w, unsigned int h)
	Generate a complete region.

Detailed Description

Class to manage access to the tile cache.

Constructor & Destructor Documentation

TileManager()

TileManager::TileManager ( Cache *  tc, IIPImage *  im, Compressor *  c, Logger *  s, int  l  )

inline

Constructor.

Parameters

tc	pointer to tile cache object
im	pointer to IIPImage object
c	pointer to Compressor object
s	pointer to Logger object
l	logging level

Member Function Documentation

getRegion()

RawTile TileManager::getRegion	(	unsigned int	res,
		int	xangle,
		int	yangle,
		int	layers,
		unsigned int	x,
		unsigned int	y,
		unsigned int	w,
		unsigned int	h
	)

Generate a complete region.

Build up an arbitrary region by extracting tiles from the cache by using getTile function. Data returned as uncompressed raw data.

Parameters

res	resolution number
xangle	horizontal sequence number
yangle	vertical sequence number
layers	number of quality layers within image to decode
x	left offset with respect to full image
y	top offset with respect to full image
w	width of region requested
h	height of region requested

Returns

RawTile

References RawTile::allocate(), RawTile::bpc, RawTile::channels, RawTile::data, RawTile::dataLength, IIPImage::getNativeResolution(), IIPImage::getRegion(), getTile(), Timer::getTime(), RawTile::height, IIPImage::image_widths, IIPImage::regionDecoding(), RawTile::sampleType, Timer::start(), IIPImage::tile_widths, and RawTile::width.

Referenced by PFL::run(), and CVT::send().

getTile()

RawTile TileManager::getTile	(	int	resolution,
		int	tile,
		int	xangle,
		int	yangle,
		int	layers,
		ImageEncoding	c
	)

Get a tile from the cache.

If the encoded tile already exists in the cache, use that, otherwise check for an uncompressed tile. If that does not exist either, extract a tile from the image.

Parameters

resolution	resolution number
tile	tile number
xangle	horizontal sequence number
yangle	vertical sequence number
layers	number of quality layers within image to decode
c	Compression

Returns

RawTile

References RawTile::bpc, RawTile::channels, Compressor::Compress(), RawTile::compressionType, RawTile::dataLength, IIPImage::getImagePath(), Cache::getMemorySize(), Cache::getNumElements(), Compressor::getQuality(), Cache::getTile(), Timer::getTime(), Cache::insert(), Timer::start(), IIPImage::timestamp, and RawTile::timestamp.

Referenced by getRegion(), SPECTRA::run(), CVT::send(), and JTL::send().

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

• TileManager.h
• TileManager.cc