#include <Framebuffer.h>

Inheritance diagram for Framebuffer:

Collaboration diagram for Framebuffer:

Classes
class	FrameGuard

Public Member Functions
size_t	getWidth () const

size_t	getHeight () const

Graphics::PixelFormat	getFormat () const

bool	getActive () const

void	setActive (bool b)

void	setPalette (uint32_t *palette, size_t nEntries)

uint32_t *	getPalette () const

virtual void *	getRawBuffer () const

virtual physical_uintptr_t	getPhysicalPage (size_t offset) const

size_t	getMappingFlags () const

void	setMappingFlags (size_t flags)

virtual Graphics::Buffer *	createBuffer (const void srcData, Graphics::PixelFormat srcFormat, size_t width, size_t height, uint32_t pPalette=0)

virtual void	destroyBuffer (Graphics::Buffer *pBuffer)

void	redraw (size_t x=~0UL, size_t y=~0UL, size_t w=~0UL, size_t h=~0UL, bool bChild=false)

virtual void	blit (Graphics::Buffer *pBuffer, size_t srcx, size_t srcy, size_t destx, size_t desty, size_t width, size_t height, bool bLowestCall=true)

virtual void	draw (void *pBuffer, size_t srcx, size_t srcy, size_t destx, size_t desty, size_t width, size_t height, Graphics::PixelFormat format=Graphics::Bits32_Argb, bool bLowestCall=true)

virtual void	rect (size_t x, size_t y, size_t width, size_t height, uint32_t colour, Graphics::PixelFormat format=Graphics::Bits32_Argb, bool bLowestCall=true)

virtual void	copy (size_t srcx, size_t srcy, size_t destx, size_t desty, size_t w, size_t h, bool bLowestCall=true)

virtual void	line (size_t x1, size_t y1, size_t x2, size_t y2, uint32_t colour, Graphics::PixelFormat format=Graphics::Bits32_Argb, bool bLowestCall=true)

void	setPixel (size_t x, size_t y, uint32_t colour, Graphics::PixelFormat format=Graphics::Bits32_Argb, bool bLowestCall=true)

void	setXPos (size_t x)

void	setYPos (size_t y)

void	setWidth (size_t w)

void	setHeight (size_t h)

void	setFormat (Graphics::PixelFormat pf)

void	setBytesPerPixel (size_t b)

uint32_t	getBytesPerPixel () const

void	setBytesPerLine (size_t b)

uint32_t	getBytesPerLine () const

void	setParent (Framebuffer *p)

Framebuffer *	getParent () const

virtual void	setFramebuffer (uintptr_t p)

bool	initialise ()

bool	claimTerminal ()

bool	takeRedraw ()

void	storeMode ()

void	restoreMode ()

int	enterMode (size_t desiredW, size_t desiredH, size_t desiredBpp)

int	useCurrentMode ()

void *	getFramebuffer () const

void	flush (size_t x, size_t y, size_t w, size_t h)

cairo_format_t	getFormat () const

size_t	getWidth () const

size_t	getHeight () const

size_t	getBytesPerLine () const

Public Attributes
size_t	m_XPos
	X position on our parent's framebuffer.

size_t	m_YPos
	Y position on our parent's framebuffer.

size_t	m_nWidth
	Width of the framebuffer in pixels.

size_t	m_nHeight
	Height of the framebuffer in pixels.

Graphics::PixelFormat	m_PixelFormat
	Framebuffer pixel format.

size_t	m_nBytesPerPixel
	Bytes per pixel in this framebuffer.

size_t	m_nBytesPerLine
	Bytes per line in this framebuffer.

Framebuffer *	m_pParent
	Parent of this framebuffer.

Protected Member Functions
Graphics::Buffer	bufferFromSelf ()

virtual void	draw (Graphics::Buffer *pBuffer, size_t srcx, size_t srcy, size_t destx, size_t desty, size_t width, size_t height, bool bLowestCall=true)

void	swBlit (Graphics::Buffer *pBuffer, size_t srcx, size_t srcy, size_t destx, size_t desty, size_t width, size_t height)

void	swRect (size_t x, size_t y, size_t width, size_t height, uint32_t colour, Graphics::PixelFormat format)

void	swCopy (size_t srcx, size_t srcy, size_t destx, size_t desty, size_t w, size_t h)

void	swLine (size_t x1, size_t y1, size_t x2, size_t y2, uint32_t colour, Graphics::PixelFormat format)

void	swDraw (void *pBuffer, size_t srcx, size_t srcy, size_t destx, size_t desty, size_t width, size_t height, Graphics::PixelFormat format=Graphics::Bits32_Argb, bool bLowestCall=true)

void	swDraw (Graphics::Buffer *pBuffer, size_t srcx, size_t srcy, size_t destx, size_t desty, size_t width, size_t height, bool bLowestCall=true)

Graphics::Buffer *	swCreateBuffer (const void srcData, Graphics::PixelFormat srcFormat, size_t width, size_t height, uint32_t pPalette)

void	swDestroyBuffer (Graphics::Buffer *pBuffer)

virtual void	hwRedraw (size_t x=~0UL, size_t y=~0UL, size_t w=~0UL, size_t h=~0UL)
	Inherited by drivers that provide a hardware redraw function.

Protected Attributes
uintptr_t	m_FramebufferBase

uint32_t *	m_Palette
	Current graphics palette - an array of 256 32-bit RGBA entries.

bool	m_bActive
	Whether this framebuffer is active or not.

Private Member Functions
void	swSetPixel (size_t x, size_t y, uint32_t colour, Graphics::PixelFormat format=Graphics::Bits32_Argb)

int	mapMode (const pedigree_fb_mode &mode)

void	releaseTerminal ()

Static Private Member Functions
static void	terminalSignal (int signal)

Private Attributes
size_t	m_MappingFlags = 0

void *	m_pFramebuffer

size_t	m_FramebufferSize

cairo_format_t	m_Format

size_t	m_Width

size_t	m_Height

size_t	m_BytesPerLine

int	m_Fb

bool	m_bStoredMode

pedigree_fb_mode	m_StoredMode

int	m_Terminal = -1

volatile sig_atomic_t	m_TerminalActive = 1

volatile sig_atomic_t	m_TerminalRedraw = 0

int	m_PreviousDisplayMode = 0

vt_mode	m_PreviousTerminalMode = {}

struct sigaction	m_PreviousReleaseAction = {}

struct sigaction	m_PreviousAcquireAction = {}

sigset_t	m_PreviousTerminalMask

Detailed Description

This class provides a generic interface for interfacing with a framebuffer. Each display driver specialises this class to define the "base address" of the framebuffer in its own way (eg, allocate memory, or use a DMA region). There are a variety of default software-only operations, which are used by default if the main operational methods are not overridden. The drawing and palette entry points are retained for external display-driver ABI compatibility, even where there are no in-tree callers. Preserve their signatures and virtual method order.

Abstracts the system's framebuffer offering.

Definition at line 35 of file Framebuffer.h.

Constructor & Destructor Documentation

◆ Framebuffer()

Framebuffer::Framebuffer ( )

Definition at line 27 of file Framebuffer.cc.

◆ ~Framebuffer()

Framebuffer::~Framebuffer ( )

virtual

Definition at line 39 of file Framebuffer.cc.

Member Function Documentation

◆ blit()

void Framebuffer::blit	(	Graphics::Buffer *	pBuffer,
		size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	width,
		size_t	height,
		bool	bLowestCall = `true`
	)

virtual

Blits a given buffer to the screen. See createBuffer.

Parameters

bLowestCall whether this is the lowest level call for the chain or a call being passed up from a child somewhere in the chain.

Definition at line 134 of file Framebuffer.cc.

References blit(), m_pParent, m_XPos, m_YPos, and swBlit().

Referenced by blit().

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◆ bufferFromSelf()

Graphics::Buffer Framebuffer::bufferFromSelf ( )

protected

Definition at line 231 of file Framebuffer.cc.

◆ claimTerminal()

bool Framebuffer::claimTerminal ( )

Claim the active VT on the thread which will present every frame.

Definition at line 88 of file fb.cc.

◆ copy()

void Framebuffer::copy	(	size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	w,
		size_t	h,
		bool	bLowestCall = `true`
	)

virtual

Copies a rectangle already on the framebuffer to a new location

Reimplemented in VmwareGraphics::VmwareFramebuffer.

Definition at line 159 of file Framebuffer.cc.

References copy(), m_pParent, m_XPos, m_YPos, and swCopy().

Referenced by copy().

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◆ createBuffer()

Graphics::Buffer * Framebuffer::createBuffer	(	const void *	srcData,
		Graphics::PixelFormat	srcFormat,
		size_t	width,
		size_t	height,
		uint32_t *	pPalette = `0`
	)

virtual

Creates a new buffer to be used for blits from the given raw pixel data. Performs automatic conversion of the pixel format to the pixel format of the current display mode. Do not modify any of the members of the buffer structure, or attempt to inject your own pixels into the buffer. Once a buffer is created, it is only used for blitting to the screen and cannot be modified. It is expected that the buffer has been packed to its bit depth, and does not have any padding on each scanline at all. Do not delete the returned buffer yourself, pass it to destroyBuffer which performs a proper cleanup of all resources related to the buffer. The buffer should be padded to finish on a DWORD boundary. This is not padding per scanline but rather padding per buffer.

Definition at line 83 of file Framebuffer.cc.

References createBuffer(), m_pParent, and swCreateBuffer().

Referenced by createBuffer().

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◆ destroyBuffer()

void Framebuffer::destroyBuffer ( Graphics::Buffer * pBuffer )

virtual

Destroys a created buffer. Frees its memory in both the system RAM and any references still in VRAM.

Definition at line 90 of file Framebuffer.cc.

◆ draw() [1/2]

void Framebuffer::draw	(	Graphics::Buffer *	pBuffer,
		size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	width,
		size_t	height,
		bool	bLowestCall = `true`
	)

protectedvirtual

Special implementation of draw() where a Graphics::Buffer is already available. For use in redraw, and similar.

Definition at line 243 of file Framebuffer.cc.

◆ draw() [2/2]

void Framebuffer::draw	(	void *	pBuffer,
		size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	width,
		size_t	height,
		Graphics::PixelFormat	format = `Graphics::Bits32_Argb`,
		bool	bLowestCall = `true`
	)

virtual

Draws given raw pixel data to the screen. Used for framebuffer chains and applications which need to render constantly changing pixel buffers.

Definition at line 142 of file Framebuffer.cc.

Referenced by redraw().

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◆ enterMode()

int Framebuffer::enterMode	(	size_t	desiredW,
		size_t	desiredH,
		size_t	desiredBpp
	)

Create framebuffer, enter desired mode.

Note: Mode set logic will try and find a mode in a lower colour depth if the desired one cannot be set.

Definition at line 316 of file fb.cc.

◆ flush()

void Framebuffer::flush	(	size_t	x,
		size_t	y,
		size_t	w,
		size_t	h
	)

Flush framebuffer in the given region.

Definition at line 350 of file fb.cc.

◆ getActive()

bool Framebuffer::getActive ( ) const

Definition at line 53 of file Framebuffer.cc.

◆ getBytesPerLine() [1/2]

uint32_t Framebuffer::getBytesPerLine ( ) const

Definition at line 215 of file Framebuffer.cc.

◆ getBytesPerLine() [2/2]

size_t Framebuffer::getBytesPerLine ( ) const

inline

Definition at line 93 of file pedigree_fb.h.

◆ getBytesPerPixel()

uint32_t Framebuffer::getBytesPerPixel ( ) const

Definition at line 207 of file Framebuffer.cc.

◆ getFormat() [1/2]

Graphics::PixelFormat Framebuffer::getFormat ( ) const

Definition at line 49 of file Framebuffer.cc.

◆ getFormat() [2/2]

cairo_format_t Framebuffer::getFormat ( ) const

inline

Get framebuffer colour format.

Definition at line 82 of file pedigree_fb.h.

◆ getFramebuffer()

void * Framebuffer::getFramebuffer ( ) const

inline

Retrieve base address of the framebuffer.

Definition at line 74 of file pedigree_fb.h.

◆ getHeight() [1/2]

size_t Framebuffer::getHeight ( ) const

Definition at line 45 of file Framebuffer.cc.

◆ getHeight() [2/2]

size_t Framebuffer::getHeight ( ) const

inline

Definition at line 90 of file pedigree_fb.h.

◆ getMappingFlags()

size_t Framebuffer::getMappingFlags ( ) const

inline

Definition at line 65 of file Framebuffer.h.

◆ getPalette()

uint32_t * Framebuffer::getPalette ( ) const

Definition at line 69 of file Framebuffer.cc.

◆ getParent()

Framebuffer * Framebuffer::getParent ( ) const

Definition at line 223 of file Framebuffer.cc.

◆ getPhysicalPage()

physical_uintptr_t Framebuffer::getPhysicalPage ( size_t offset ) const

virtual

Gets the physical page backing an offset in the framebuffer. This is used by direct framebuffer mappings such as /dev/fb. Providers backed only by a virtual buffer should retain the default failure.

Reimplemented in VirtioGpu::GpuFramebuffer.

Definition at line 79 of file Framebuffer.cc.

Referenced by FramebufferFile::getPhysicalPage().

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◆ getRawBuffer()

void * Framebuffer::getRawBuffer ( ) const

virtual

Gets a raw pointer to the framebuffer itself. There is no way to know if this pointer points to an MMIO region or real RAM, so it cannot be guaranteed to be safe.

Definition at line 73 of file Framebuffer.cc.

References getRawBuffer(), and m_pParent.

Referenced by getRawBuffer(), and FramebufferFile::readBlock().

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◆ getWidth() [1/2]

size_t Framebuffer::getWidth ( ) const

Definition at line 41 of file Framebuffer.cc.

◆ getWidth() [2/2]

size_t Framebuffer::getWidth ( ) const

inline

Get framebuffer dimensions.

Definition at line 87 of file pedigree_fb.h.

◆ hwRedraw()

void Framebuffer::hwRedraw	(	size_t	x = `~0UL`,
		size_t	y = `~0UL`,
		size_t	w = `~0UL`,
		size_t	h = `~0UL`
	)

protectedvirtual

Inherited by drivers that provide a hardware redraw function.

Reimplemented in VirtioGpu::GpuFramebuffer, and VmwareGraphics::VmwareFramebuffer.

Definition at line 704 of file Framebuffer.cc.

Referenced by redraw().

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◆ initialise()

bool Framebuffer::initialise ( )

General system-specific initialisation.

Definition at line 211 of file fb.cc.

◆ line()

void Framebuffer::line	(	size_t	x1,
		size_t	y1,
		size_t	x2,
		size_t	y2,
		uint32_t	colour,
		Graphics::PixelFormat	format = `Graphics::Bits32_Argb`,
		bool	bLowestCall = `true`
	)

virtual

Draws a line one pixel wide between two points on the screen

Definition at line 167 of file Framebuffer.cc.

References line(), m_pParent, m_XPos, and m_YPos.

Referenced by line().

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◆ mapMode()

int Framebuffer::mapMode ( const pedigree_fb_mode & mode )

private

Definition at line 247 of file fb.cc.

◆ rect()

void Framebuffer::rect	(	size_t	x,
		size_t	y,
		size_t	width,
		size_t	height,
		uint32_t	colour,
		Graphics::PixelFormat	format = `Graphics::Bits32_Argb`,
		bool	bLowestCall = `true`
	)

virtual

Draws a single rectangle to the screen with the given colour.

Definition at line 151 of file Framebuffer.cc.

References m_pParent, m_XPos, m_YPos, rect(), and swRect().

Referenced by rect().

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◆ redraw()

void Framebuffer::redraw	(	size_t	x = `~0UL`,
		size_t	y = `~0UL`,
		size_t	w = `~0UL`,
		size_t	h = `~0UL`,
		bool	bChild = `false`
	)

Performs an update of a region of this framebuffer. This function can be used by drivers to request an area of the framebuffer be redrawn, but is useless for non-hardware-accelerated devices.

Parameters

x	leftmost x co-ordinate of the redraw area, ~0 for "invalid"
y	topmost y co-ordinate of the redraw area, ~0 for "invalid"
w	width of the redraw area, ~0 for "invalid"
h	height of the redraw area, ~0 for "invalid"
bChild	non-zero if a child began the redraw, zero otherwise

Note: Because every redraw ends up redrawing a large region of the "root" framebuffer, it's not necessary to do framebuffer copies at any point. The only reason a framebuffer copy is done in this function is in the one case where a parent needs to override a child's framebuffer.

Note: If none of the above makes sense, you need to read the Pedigree graphics design doc: http://pedigree-project.org/issues/114

Todo:: nChildren parameter - this is not necessary if no children!

Definition at line 97 of file Framebuffer.cc.

References draw(), hwRedraw(), m_PixelFormat, m_pParent, m_XPos, m_YPos, and redraw().

Referenced by FramebufferFile::command(), X86Vga::moveCursor(), redraw(), and takeRedraw().

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◆ releaseTerminal()

void Framebuffer::releaseTerminal ( )

private

Definition at line 181 of file fb.cc.

◆ restoreMode()

void Framebuffer::restoreMode ( )

Restore saved mode.

Definition at line 236 of file fb.cc.

◆ setActive()

void Framebuffer::setActive ( bool b )

Definition at line 57 of file Framebuffer.cc.

◆ setBytesPerLine()

void Framebuffer::setBytesPerLine ( size_t b )

Definition at line 211 of file Framebuffer.cc.

◆ setBytesPerPixel()

void Framebuffer::setBytesPerPixel ( size_t b )

Definition at line 203 of file Framebuffer.cc.

◆ setFormat()

void Framebuffer::setFormat ( Graphics::PixelFormat pf )

Definition at line 199 of file Framebuffer.cc.

◆ setFramebuffer()

void Framebuffer::setFramebuffer ( uintptr_t p )

virtual

Definition at line 227 of file Framebuffer.cc.

◆ setHeight()

void Framebuffer::setHeight ( size_t h )

Definition at line 195 of file Framebuffer.cc.

◆ setMappingFlags()

void Framebuffer::setMappingFlags ( size_t flags )

inline

Definition at line 68 of file Framebuffer.h.

◆ setPalette()

void Framebuffer::setPalette	(	uint32_t *	palette,
		size_t	nEntries
	)

Sets the palette used for palette-based colour formats. Takes an array of pixels in Bits32_Argb format.

Definition at line 61 of file Framebuffer.cc.

References Dec, Hex, and m_Palette.

Referenced by FramebufferFile::command().

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◆ setParent()

void Framebuffer::setParent ( Framebuffer * p )

Definition at line 219 of file Framebuffer.cc.

◆ setPixel()

void Framebuffer::setPixel	(	size_t	x,
		size_t	y,
		uint32_t	colour,
		Graphics::PixelFormat	format = `Graphics::Bits32_Argb`,
		bool	bLowestCall = `true`
	)

Sets an individual pixel on the framebuffer. Not inheritable.

Definition at line 175 of file Framebuffer.cc.

References m_pParent, m_XPos, m_YPos, setPixel(), and swSetPixel().

Referenced by setPixel().

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◆ setWidth()

void Framebuffer::setWidth ( size_t w )

Definition at line 191 of file Framebuffer.cc.

◆ setXPos()

void Framebuffer::setXPos ( size_t x )

Definition at line 183 of file Framebuffer.cc.

◆ setYPos()

void Framebuffer::setYPos ( size_t y )

Definition at line 187 of file Framebuffer.cc.

◆ storeMode()

void Framebuffer::storeMode ( )

Store current mode (before switching).

Definition at line 223 of file fb.cc.

◆ swBlit()

void Framebuffer::swBlit	(	Graphics::Buffer *	pBuffer,
		size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	width,
		size_t	height
	)

protected

Todo:: This code is broken for the case where srcx/srcy are not zero. :(

Definition at line 351 of file Framebuffer.cc.

References Graphics::Buffer::base, Graphics::Buffer::bytesPerPixel, Graphics::Buffer::height, m_nBytesPerLine, m_nBytesPerPixel, m_nHeight, m_nWidth, UNLIKELY, and Graphics::Buffer::width.

Referenced by blit().

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◆ swCopy()

void Framebuffer::swCopy	(	size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	w,
		size_t	h
	)

protected

Todo:: consider source bytes per line?

Definition at line 518 of file Framebuffer.cc.

References m_nBytesPerLine, m_nBytesPerPixel, m_nHeight, m_nWidth, and UNLIKELY.

Referenced by copy().

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◆ swCreateBuffer()

Graphics::Buffer * Framebuffer::swCreateBuffer	(	const void *	srcData,
		Graphics::PixelFormat	srcFormat,
		size_t	width,
		size_t	height,
		uint32_t *	pPalette
	)

protected

Todo:: 8-bit

Definition at line 248 of file Framebuffer.cc.

References PhysicalMemoryManager::allocateRegion(), Graphics::Buffer::base, Graphics::Buffer::bufferId, Graphics::Buffer::bytesPerPixel, Graphics::Buffer::format, PhysicalMemoryManager::getPageSize(), Graphics::Buffer::height, PhysicalMemoryManager::instance(), m_nBytesPerPixel, m_PixelFormat, Graphics::Buffer::pBacking, UNLIKELY, MemoryRegion::virtualAddress(), Graphics::Buffer::width, and VirtualAddressSpace::Write.

Referenced by createBuffer().

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◆ swDestroyBuffer()

void Framebuffer::swDestroyBuffer ( Graphics::Buffer * pBuffer )

protected

Definition at line 341 of file Framebuffer.cc.

◆ swDraw() [1/2]

void Framebuffer::swDraw	(	Graphics::Buffer *	pBuffer,
		size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	width,
		size_t	height,
		bool	bLowestCall = `true`
	)

protected

Definition at line 699 of file Framebuffer.cc.

◆ swDraw() [2/2]

void Framebuffer::swDraw	(	void *	pBuffer,
		size_t	srcx,
		size_t	srcy,
		size_t	destx,
		size_t	desty,
		size_t	width,
		size_t	height,
		Graphics::PixelFormat	format = `Graphics::Bits32_Argb`,
		bool	bLowestCall = `true`
	)

protected

Definition at line 686 of file Framebuffer.cc.

◆ swLine()

void Framebuffer::swLine	(	size_t	x1,
		size_t	y1,
		size_t	x2,
		size_t	y2,
		uint32_t	colour,
		Graphics::PixelFormat	format
	)

protected

Definition at line 572 of file Framebuffer.cc.

◆ swRect()

void Framebuffer::swRect	(	size_t	x,
		size_t	y,
		size_t	width,
		size_t	height,
		uint32_t	colour,
		Graphics::PixelFormat	format
	)

protected

Todo:: Handle 24-bit properly

Todo:: Handle 24-bit properly

Definition at line 409 of file Framebuffer.cc.

References m_nBytesPerLine, m_nBytesPerPixel, m_nHeight, m_nWidth, m_Palette, m_PixelFormat, and UNLIKELY.

Referenced by rect().

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◆ swSetPixel()

void Framebuffer::swSetPixel	(	size_t	x,
		size_t	y,
		uint32_t	colour,
		Graphics::PixelFormat	format = `Graphics::Bits32_Argb`
	)

private

Sets an individual pixel on the framebuffer. Not inheritable.

Todo:: 8-bit

Definition at line 650 of file Framebuffer.cc.

References m_nBytesPerLine, m_nBytesPerPixel, m_nHeight, m_nWidth, m_Palette, m_PixelFormat, and UNLIKELY.

Referenced by setPixel().

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◆ takeRedraw()

bool Framebuffer::takeRedraw ( )

A reacquired VT needs its retained scene presented again.

Definition at line 172 of file fb.cc.

References redraw().

◆ terminalSignal()

void Framebuffer::terminalSignal ( int signal )

staticprivate

Definition at line 153 of file fb.cc.

◆ useCurrentMode()

int Framebuffer::useCurrentMode ( )

Create framebuffer using the display mode selected by the bootloader.

Definition at line 303 of file fb.cc.

Member Data Documentation

◆ m_bActive

bool Framebuffer::m_bActive

protected

Whether this framebuffer is active or not.

Definition at line 196 of file Framebuffer.h.

◆ m_bStoredMode

bool Framebuffer::m_bStoredMode

private

Definition at line 113 of file pedigree_fb.h.

◆ m_BytesPerLine

size_t Framebuffer::m_BytesPerLine

private

Definition at line 109 of file pedigree_fb.h.

◆ m_Fb

int Framebuffer::m_Fb

private

Definition at line 111 of file pedigree_fb.h.

◆ m_Format

cairo_format_t Framebuffer::m_Format

private

Definition at line 105 of file pedigree_fb.h.

◆ m_FramebufferBase

uintptr_t Framebuffer::m_FramebufferBase

protected

Definition at line 190 of file Framebuffer.h.

◆ m_FramebufferSize

size_t Framebuffer::m_FramebufferSize

private

Definition at line 103 of file pedigree_fb.h.

◆ m_Height

size_t Framebuffer::m_Height

private

Definition at line 108 of file pedigree_fb.h.

◆ m_MappingFlags

size_t Framebuffer::m_MappingFlags = 0

private

Definition at line 232 of file Framebuffer.h.

◆ m_nBytesPerLine

size_t Framebuffer::m_nBytesPerLine

Bytes per line in this framebuffer.

Definition at line 171 of file Framebuffer.h.

Referenced by swBlit(), swCopy(), swRect(), and swSetPixel().

◆ m_nBytesPerPixel

size_t Framebuffer::m_nBytesPerPixel

Bytes per pixel in this framebuffer.

Definition at line 166 of file Framebuffer.h.

Referenced by swBlit(), swCopy(), swCreateBuffer(), swRect(), and swSetPixel().

◆ m_nHeight

size_t Framebuffer::m_nHeight

Height of the framebuffer in pixels.

Definition at line 158 of file Framebuffer.h.

Referenced by swBlit(), swCopy(), swRect(), and swSetPixel().

◆ m_nWidth

size_t Framebuffer::m_nWidth

Width of the framebuffer in pixels.

Definition at line 154 of file Framebuffer.h.

Referenced by swBlit(), swCopy(), swRect(), and swSetPixel().

◆ m_Palette

uint32_t* Framebuffer::m_Palette

protected

Current graphics palette - an array of 256 32-bit RGBA entries.

Definition at line 193 of file Framebuffer.h.

Referenced by setPalette(), swRect(), and swSetPixel().

◆ m_pFramebuffer

void* Framebuffer::m_pFramebuffer

private

Definition at line 102 of file pedigree_fb.h.

◆ m_PixelFormat

Graphics::PixelFormat Framebuffer::m_PixelFormat

Framebuffer pixel format.

Definition at line 162 of file Framebuffer.h.

Referenced by redraw(), swCreateBuffer(), swRect(), and swSetPixel().

◆ m_pParent

Framebuffer* Framebuffer::m_pParent

Parent of this framebuffer.

Definition at line 176 of file Framebuffer.h.

Referenced by blit(), copy(), createBuffer(), getRawBuffer(), line(), rect(), redraw(), and setPixel().

◆ m_PreviousAcquireAction

struct sigaction Framebuffer::m_PreviousAcquireAction = {}

private

Definition at line 122 of file pedigree_fb.h.

◆ m_PreviousDisplayMode

int Framebuffer::m_PreviousDisplayMode = 0

private

Definition at line 119 of file pedigree_fb.h.

◆ m_PreviousReleaseAction

struct sigaction Framebuffer::m_PreviousReleaseAction = {}

private

Definition at line 121 of file pedigree_fb.h.

◆ m_PreviousTerminalMask

sigset_t Framebuffer::m_PreviousTerminalMask

private

Definition at line 123 of file pedigree_fb.h.

◆ m_PreviousTerminalMode

vt_mode Framebuffer::m_PreviousTerminalMode = {}

private

Definition at line 120 of file pedigree_fb.h.

◆ m_StoredMode

pedigree_fb_mode Framebuffer::m_StoredMode

private

Definition at line 114 of file pedigree_fb.h.

◆ m_Terminal

int Framebuffer::m_Terminal = -1

private

Definition at line 116 of file pedigree_fb.h.

◆ m_TerminalActive

volatile sig_atomic_t Framebuffer::m_TerminalActive = 1

private

Definition at line 117 of file pedigree_fb.h.

◆ m_TerminalRedraw

volatile sig_atomic_t Framebuffer::m_TerminalRedraw = 0

private

Definition at line 118 of file pedigree_fb.h.

◆ m_Width

size_t Framebuffer::m_Width

private

Definition at line 107 of file pedigree_fb.h.

◆ m_XPos

size_t Framebuffer::m_XPos

X position on our parent's framebuffer.

Class friendship isn't inheritable, so these have to be public for graphics drivers to use. They shouldn't be touched by anything that isn't a graphics driver.

Definition at line 146 of file Framebuffer.h.

Referenced by blit(), copy(), line(), rect(), redraw(), and setPixel().

◆ m_YPos

size_t Framebuffer::m_YPos

Y position on our parent's framebuffer.

Definition at line 150 of file Framebuffer.h.

Referenced by blit(), copy(), line(), rect(), redraw(), and setPixel().

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

Classes

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Framebuffer()

◆ ~Framebuffer()

Member Function Documentation

◆ blit()

◆ bufferFromSelf()

◆ claimTerminal()

◆ copy()

◆ createBuffer()

◆ destroyBuffer()

◆ draw() [1/2]

◆ draw() [2/2]

◆ enterMode()

◆ flush()

◆ getActive()

◆ getBytesPerLine() [1/2]

◆ getBytesPerLine() [2/2]

◆ getBytesPerPixel()

◆ getFormat() [1/2]

◆ getFormat() [2/2]

◆ getFramebuffer()

◆ getHeight() [1/2]

◆ getHeight() [2/2]

◆ getMappingFlags()

◆ getPalette()

◆ getParent()

◆ getPhysicalPage()

◆ getRawBuffer()

◆ getWidth() [1/2]

◆ getWidth() [2/2]

◆ hwRedraw()

◆ initialise()

◆ line()

◆ mapMode()

◆ rect()

◆ redraw()

◆ releaseTerminal()

◆ restoreMode()

◆ setActive()

◆ setBytesPerLine()

◆ setBytesPerPixel()

◆ setFormat()

◆ setFramebuffer()

◆ setHeight()

◆ setMappingFlags()

◆ setPalette()

◆ setParent()

◆ setPixel()

◆ setWidth()

◆ setXPos()

◆ setYPos()

◆ storeMode()

◆ swBlit()

◆ swCopy()

◆ swCreateBuffer()

◆ swDestroyBuffer()

◆ swDraw() [1/2]

◆ swDraw() [2/2]

◆ swLine()

◆ swRect()

◆ swSetPixel()

◆ takeRedraw()

◆ terminalSignal()

◆ useCurrentMode()

Member Data Documentation

◆ m_bActive

◆ m_bStoredMode

◆ m_BytesPerLine

◆ m_Fb

◆ m_Format

◆ m_FramebufferBase