Color channel conversion and scaling helper class. More...

#include <pixel.hh>

Public Member Functions
	Channel (unsigned offset, unsigned width)

uint8_t	toPixel (uint32_t word) const
	Get the value of a single color channel represented as an 8-bit number. More...

uint32_t	fromPixel (uint8_t ch) const
	Convert an 8-bit representation of a color into an external format. More...

Public Attributes
unsigned	offset
	Offset in bits. More...

unsigned	mask
	Bit mask (after shifting) More...

float	factor
	Scaling factor when converting to the full range of an 8-bit color channel. More...

Detailed Description

Color channel conversion and scaling helper class.

Definition at line 93 of file pixel.hh.

Constructor & Destructor Documentation

◆ Channel()

PixelConverter::Channel::Channel	(	unsigned	offset,
		unsigned	width
	)

Parameters

offset	Offset in bits.
width	Width in bits.

Definition at line 65 of file pixel.cc.

Member Function Documentation

◆ fromPixel()

uint32_t PixelConverter::Channel::fromPixel ( uint8_t ch ) const

inline

Convert an 8-bit representation of a color into an external format.

Definition at line 112 of file pixel.hh.

References factor, mask, and offset.

Referenced by PixelConverter::fromPixel().

◆ toPixel()

uint8_t PixelConverter::Channel::toPixel ( uint32_t word ) const

inline

Get the value of a single color channel represented as an 8-bit number.

Definition at line 104 of file pixel.hh.

References factor, mask, and offset.

Referenced by PixelConverter::toPixel().

Member Data Documentation

◆ factor

float PixelConverter::Channel::factor

Scaling factor when converting to the full range of an 8-bit color channel.

Definition at line 124 of file pixel.hh.

Referenced by fromPixel(), and toPixel().

◆ mask

unsigned PixelConverter::Channel::mask

Bit mask (after shifting)

Definition at line 119 of file pixel.hh.

Referenced by fromPixel(), toPixel(), and VncServer::VncServer().

◆ offset

unsigned PixelConverter::Channel::offset

Offset in bits.

Definition at line 117 of file pixel.hh.