openmsx::PolyScaleRef< Pixel, Scaler > Class Template Reference

Like PolyScale above, but instead keeps a reference to the actual scaler. More...

#include <LineScalers.hh>

Inheritance diagram for openmsx::PolyScaleRef< Pixel, Scaler >:

Collaboration diagram for openmsx::PolyScaleRef< Pixel, Scaler >:

Public Member Functions
	PolyScaleRef (Scaler &scaler_)
void	operator() (const Pixel *in, Pixel *out, size_t outWidth) override
	Actually scale a line. More...
bool	isCopy () const override
	Is this scale operation actually a copy? This info can be used to (in a multi-step scale operation) immediately produce the output of the previous step in this step's output buffer, so effectively skipping this step. More...

Additional Inherited Members
Protected Member Functions inherited from openmsx::PolyLineScaler< Pixel >
	~PolyLineScaler ()=default

Detailed Description

template<std::unsigned_integral Pixel, typename Scaler>
class openmsx::PolyScaleRef< Pixel, Scaler >

Like PolyScale above, but instead keeps a reference to the actual scaler.

Can be used when the actual scaler is expensive to construct (e.g. Blur_1on3).

Definition at line 339 of file LineScalers.hh.

Constructor & Destructor Documentation

PolyScaleRef()

template<std::unsigned_integral Pixel, typename Scaler >

openmsx::PolyScaleRef< Pixel, Scaler >::PolyScaleRef ( Scaler &  scaler_ )

inlineexplicit

Definition at line 342 of file LineScalers.hh.

Member Function Documentation

isCopy()

template<std::unsigned_integral Pixel, typename Scaler >

bool openmsx::PolyScaleRef< Pixel, Scaler >::isCopy ( ) const

inlineoverridevirtual

Is this scale operation actually a copy? This info can be used to (in a multi-step scale operation) immediately produce the output of the previous step in this step's output buffer, so effectively skipping this step.

Implements openmsx::PolyLineScaler< Pixel >.

Definition at line 350 of file LineScalers.hh.

operator()()

template<std::unsigned_integral Pixel, typename Scaler >

void openmsx::PolyScaleRef< Pixel, Scaler >::operator() ( const Pixel *  in, Pixel *  out, size_t  outWidth  )

inlineoverridevirtual

Actually scale a line.

Parameters

in	Pointer to buffer containing input line.
out	Pointer to buffer that should be filled with output.
outWidth	The number of pixels that should be output. Note: The number of input pixels is not explicitly specified. This depends on the actual scaler, for example Scale_2on1 requires twice as many pixels in the input than the output.

Implements openmsx::PolyLineScaler< Pixel >.

Definition at line 346 of file LineScalers.hh.

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

• LineScalers.hh