#include <PowerOfSqrtTwoZoomConstraint.h>

Inheritance diagram for PowerOfSqrtTwoZoomConstraint:

Collaboration diagram for PowerOfSqrtTwoZoomConstraint:

Public Types
enum	RoundingDirection { RoundDown, RoundUp, RoundNearest }

Public Member Functions
virtual int	getNearestBlockSize (int requestedBlockSize, RoundingDirection dir=RoundNearest) const
	Given the "ideal" block size (frames per pixel) for a given zoom level, return the nearest viable block size for this constraint. More...

virtual int	getNearestBlockSize (int requestedBlockSize, int &type, int &power, RoundingDirection dir=RoundNearest) const

virtual int	getMinCachePower () const

virtual int	getMaxZoomLevel () const
	Return the maximum zoom level within range for this constraint. More...

Detailed Description

Definition at line 21 of file PowerOfSqrtTwoZoomConstraint.h.

Member Enumeration Documentation

◆ RoundingDirection

enum ZoomConstraint::RoundingDirection

inherited

Enumerator
RoundDown
RoundUp
RoundNearest

Definition at line 35 of file ZoomConstraint.h.

Member Function Documentation

◆ getNearestBlockSize() [1/2]

int PowerOfSqrtTwoZoomConstraint::getNearestBlockSize	(	int	requestedBlockSize,
		RoundingDirection	= `RoundNearest`
	)		const

virtual

Given the "ideal" block size (frames per pixel) for a given zoom level, return the nearest viable block size for this constraint.

For example, if a block size of 1523 frames per pixel is requested but the underlying model only supports value summaries at powers-of-two block sizes, return 1024 or 2048 depending on the rounding direction supplied.

Reimplemented from ZoomConstraint.

Definition at line 23 of file PowerOfSqrtTwoZoomConstraint.cpp.

Referenced by WaveFileModel::getSummaries(), and WaveFileModel::getSummaryBlockSize().