PixelConverter::Channel Struct Reference

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

#include <framebuffer.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 97 of file framebuffer.hh.

Constructor & Destructor Documentation

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

Parameters

offset	Offset in bits.
width	Width in bits.

Definition at line 71 of file framebuffer.cc.

Member Function Documentation

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 116 of file framebuffer.hh.

References factor, mask, and offset.

Referenced by PixelConverter::fromPixel().

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 108 of file framebuffer.hh.

References factor, and mask.

Referenced by PixelConverter::toPixel().

Member Data Documentation

float PixelConverter::Channel::factor

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

Definition at line 128 of file framebuffer.hh.

Referenced by fromPixel(), and toPixel().

unsigned PixelConverter::Channel::mask

Bit mask (after shifting)

Definition at line 123 of file framebuffer.hh.

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

unsigned PixelConverter::Channel::offset

Offset in bits.

Definition at line 121 of file framebuffer.hh.

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

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

• base/framebuffer.hh
• base/framebuffer.cc