Unit Framebuffer

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Description


Ultibo Framebuffer Interface unit

Constants



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Framebuffer specific constants FRAMEBUFFER_*


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Framebuffer device type FRAMEBUFFER_TYPE_*


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Framebuffer device state FRAMEBUFFER_STATE_*


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Framebuffer cursor state FRAMEBUFFER_CURSOR_*


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Framebuffer device flag FRAMEBUFFER_FLAG_*


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Framebuffer transfer flag FRAMEBUFFER_TRANSFER_*


Type definitions



Framebuffer palette

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PFramebufferPalette = ^TFramebufferPalette;

TFramebufferPalette = record

Framebuffer properties

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PFramebufferProperties = ^TFramebufferProperties;

TFramebufferProperties = record

Framebuffer enumeration callback

TFramebufferEnumerate = function(Framebuffer:PFramebufferDevice; Data:Pointer):LongWord;

Framebuffer notification callback

TFramebufferNotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;

Framebuffer device allocate

TFramebufferDeviceAllocate = function(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;

Framebuffer device release

TFramebufferDeviceRelease = function(Framebuffer:PFramebufferDevice):LongWord;

Framebuffer device blank

TFramebufferDeviceBlank = function(Framebuffer:PFramebufferDevice; Blank:Boolean):LongWord;

Framebuffer device read

TFramebufferDeviceRead = function(Framebuffer:PFramebufferDevice; X,Y:LongWord; Buffer:Pointer; Len,Flags:LongWord):LongWord;

Framebuffer device write

TFramebufferDeviceWrite = function(Framebuffer:PFramebufferDevice; X,Y:LongWord; Buffer:Pointer; Len,Flags:LongWord):LongWord;

Framebuffer device mark

TFramebufferDeviceMark = function(Framebuffer:PFramebufferDevice; X,Y,Width,Height,Flags:LongWord):LongWord;

Framebuffer device commit

TFramebufferDeviceCommit = function(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;

Framebuffer device get rect

TFramebufferDeviceGetRect = function(Framebuffer:PFramebufferDevice; X,Y:LongWord; Buffer:Pointer; Width,Height,Skip,Flags:LongWord):LongWord;

Framebuffer device put rect

TFramebufferDevicePutRect = function(Framebuffer:PFramebufferDevice; X,Y:LongWord; Buffer:Pointer; Width,Height,Skip,Flags:LongWord):LongWord;

Framebuffer device copy rect

TFramebufferDeviceCopyRect = function(Framebuffer:PFramebufferDevice; X1,Y1,X2,Y2,Width,Height,Flags:LongWord):LongWord;

Framebuffer device fill rect

TFramebufferDeviceFillRect = function(Framebuffer:PFramebufferDevice; X,Y,Width,Height,Color,Flags:LongWord):LongWord;

Framebuffer device get line

TFramebufferDeviceGetLine = function(Framebuffer:PFramebufferDevice; Y:LongWord):Pointer;

Framebuffer device get point

TFramebufferDeviceGetPoint = function(Framebuffer:PFramebufferDevice; X,Y:LongWord):Pointer;

Framebuffer device wait sync

TFramebufferDeviceWaitSync = function(Framebuffer:PFramebufferDevice):LongWord;

Framebuffer device get offset

TFramebufferDeviceGetOffset = function(Framebuffer:PFramebufferDevice; var X,Y:LongWord):LongWord;

Framebuffer device set offset

TFramebufferDeviceSetOffset = function(Framebuffer:PFramebufferDevice; X,Y:LongWord;Pan:Boolean):LongWord;

Framebuffer device set offset ex

TFramebufferDeviceSetOffsetEx = function(Framebuffer:PFramebufferDevice; X,Y:LongWord; Pan,Switch:Boolean):LongWord;

Framebuffer device get palette

TFramebufferDeviceGetPalette = function(Framebuffer:PFramebufferDevice; Palette:PFramebufferPalette):LongWord;

Framebuffer device set palette

TFramebufferDeviceSetPalette = function(Framebuffer:PFramebufferDevice; Palette:PFramebufferPalette):LongWord;

Framebuffer device set backlight

TFramebufferDeviceSetBacklight = function(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;

Framebuffer device set cursor

TFramebufferDeviceSetCursor = function(Framebuffer:PFramebufferDevice; Width,Height,HotspotX,HotspotY:LongWord; Image:Pointer; Len:LongWord):LongWord;

Framebuffer device update cursor

TFramebufferDeviceUpdateCursor = function(Framebuffer:PFramebufferDevice; Enabled:Boolean; X,Y:LongInt; Relative:Boolean):LongWord;

Framebuffer device get properties

TFramebufferDeviceGetProperties = function(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;

Framebuffer device set properties

TFramebufferDeviceSetProperties = function(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;

Framebuffer device

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PFramebufferDevice = ^TFramebufferDevice;

TFramebufferDevice = record


Public variables



Initialization handlers

FramebufferInitHandler:TFramebufferInit;


Function declarations



Initialization functions

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procedure FramebufferInit;
Description: Initialize the Framebuffer unit and Framebuffer device table


Framebuffer functions

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function FramebufferDeviceAllocate(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Allocate and enable a framebuffer device using supplied properties or defaults


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function FramebufferDeviceRelease(Framebuffer:PFramebufferDevice):LongWord;
Description: Disable and release a framebuffer device


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function FramebufferDeviceBlank(Framebuffer:PFramebufferDevice; Blank:Boolean):LongWord;
Description: Blank (Turn off) the display of a framebuffer device


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function FramebufferDeviceRead(Framebuffer:PFramebufferDevice; X,Y:LongWord; Buffer:Pointer; Len,Flags:LongWord):LongWord;
Description: Read one or more pixels from framebuffer device memory to a supplied buffer


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function FramebufferDeviceWrite(Framebuffer:PFramebufferDevice; X,Y:LongWord; Buffer:Pointer; Len,Flags:LongWord):LongWord;
Description: Write one or more pixels to framebuffer device memory from a supplied buffer


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function FramebufferDeviceMark(Framebuffer:PFramebufferDevice; X,Y,Width,Height,Flags:LongWord):LongWord;
Description: Mark a region written to the framebuffer and signal the device to take any necessary actions


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function FramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;
Description: Commit a region written to the framebuffer and signal the device to take any necessary actions


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function FramebufferDeviceGetRect(Framebuffer:PFramebufferDevice; X,Y:LongWord; Buffer:Pointer; Width,Height,Skip,Flags:LongWord):LongWord;
Description: Get a rectangular area of pixels from framebuffer memory to a supplied buffer


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function FramebufferDevicePutRect(Framebuffer:PFramebufferDevice; X,Y:LongWord;Buffer:Pointer; Width,Height,Skip,Flags:LongWord):LongWord;
Description: Put a rectangular area of pixels from a supplied buffer to framebuffer memory


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function FramebufferDeviceCopyRect(Framebuffer:PFramebufferDevice; X1,Y1,X2,Y2,Width,Height,Flags:LongWord):LongWord;
Description: Copy a rectangular area of pixels within framebuffer memory


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function FramebufferDeviceFillRect(Framebuffer:PFramebufferDevice; X,Y,Width,Height,Color,Flags:LongWord):LongWord;
Description: Fill a rectangular area of pixels within framebuffer memory


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function FramebufferDeviceGetLine(Framebuffer:PFramebufferDevice; Y:LongWord):Pointer;
Description: Get the address of the start of a row in framebuffer memory


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function FramebufferDeviceGetPoint(Framebuffer:PFramebufferDevice; X,Y:LongWord):Pointer;
Description: Get the address of the specified row and column in framebuffer memory


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function FramebufferDeviceWaitSync(Framebuffer:PFramebufferDevice):LongWord;
Description: Wait for the next vertical sync signal from the display hardware


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function FramebufferDeviceGetOffset(Framebuffer:PFramebufferDevice; var X,Y:LongWord):LongWord;
Description: Get the virtual offset X and Y from a framebuffer device


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function FramebufferDeviceSetOffset(Framebuffer:PFramebufferDevice; X,Y:LongWord; Pan:Boolean):LongWord; inline;
Description: Set the virtual offset X and Y of a framebuffer device


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function FramebufferDeviceSetOffsetEx(Framebuffer:PFramebufferDevice; X,Y:LongWord; Pan,Switch:Boolean):LongWord;
Description: Set the virtual offset X and Y of a framebuffer device


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function FramebufferDeviceGetPalette(Framebuffer:PFramebufferDevice; Palette:PFramebufferPalette):LongWord;
Description: Get the 8 bit color palette from a framebuffer device


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function FramebufferDeviceSetPalette(Framebuffer:PFramebufferDevice; Palette:PFramebufferPalette):LongWord;
Description: Set the 8 bit color palette of a framebuffer device


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function FramebufferDeviceSetBacklight(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;
Description: Set the brightness of the backlight of a framebuffer device


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function FramebufferDeviceSetCursor(Framebuffer:PFramebufferDevice; Width,Height,HotspotX,HotspotY:LongWord; Image:Pointer; Len:LongWord):LongWord;
Description: Set the mouse cursor image and properties of a framebuffer device


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function FramebufferDeviceUpdateCursor(Framebuffer:PFramebufferDevice; Enabled:Boolean; X,Y:LongInt; Relative:Boolean):LongWord;
Description: Update the position and state for the mouse cursor of a framebuffer device


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function FramebufferDeviceGetProperties(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Get the current properties from a framebuffer device


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function FramebufferDeviceSetProperties(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Set the current properties for a framebuffer device


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function FramebufferDeviceCheckFlag(Framebuffer:PFramebufferDevice; Flag:LongWord):Boolean;
Description: Check if a framebuffer device supports a flag value


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function FramebufferDeviceGetFormat(Framebuffer:PFramebufferDevice):LongWord;
Description: Get the color format of a framebuffer device


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function FramebufferDeviceCreate:PFramebufferDevice;
Description: Create a new Framebuffer entry


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function FramebufferDeviceCreateEx(Size:LongWord):PFramebufferDevice;
Description: Create a new Framebuffer entry


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function FramebufferDeviceDestroy(Framebuffer:PFramebufferDevice):LongWord;
Description: Destroy an existing Framebuffer entry


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function FramebufferDeviceRegister(Framebuffer:PFramebufferDevice):LongWord;
Description: Register a new Framebuffer in the Framebuffer table


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function FramebufferDeviceDeregister(Framebuffer:PFramebufferDevice):LongWord;
Description: Deregister a Framebuffer from the Framebuffer table


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function FramebufferDeviceFind(FramebufferId:LongWord):PFramebufferDevice;
Description: Find a framebuffer device by ID in the framebuffer table


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function FramebufferDeviceFindByName(const Name:String):PFramebufferDevice; inline;
Description: Find a framebuffer device by name in the framebuffer table


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function FramebufferDeviceFindByDescription(const Description:String):PFramebufferDevice; inline;
Description: Find a framebuffer device by description in the framebuffer table


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function FramebufferDeviceEnumerate(Callback:TFramebufferEnumerate; Data:Pointer):LongWord;
Description: Enumerate all framebuffer devices in the framebuffer table


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function FramebufferDeviceNotification(Framebuffer:PFramebufferDevice; Callback:TFramebufferNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
Description: Register a notification for framebuffer device changes


RTL framebuffer functions

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function SysFramebufferAvailable:Boolean;
Description: Check if a framebuffer device is available


Framebuffer helper functions

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function FramebufferDeviceGetCount:LongWord;
Description: Get the current framebuffer device count


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function FramebufferDeviceGetDefault:PFramebufferDevice;
Description: Get the current default framebuffer device


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function FramebufferDeviceSetDefault(Framebuffer:PFramebufferDevice):LongWord;
Description: Set the current default framebuffer device


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function FramebufferDeviceCheck(Framebuffer:PFramebufferDevice):PFramebufferDevice;
Description: Check if the supplied Framebuffer device is in the Framebuffer table


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function FramebufferDeviceSwap(Value:LongWord):LongWord; inline;
Description: No longer required (See ColorDefaultToFormat and ColorFormatToDefault)


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function FramebufferTypeToString(FramebufferType:LongWord):String;
Description: Convert a Framebuffer type value to a string


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function FramebufferStateToString(FramebufferState:LongWord):String;
Description: Convert a Framebuffer state value to a string


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procedure FramebufferDeviceHideCursor(Framebuffer:PFramebufferDevice);
Description: Restore the framebuffer area under the cursor from the cursor buffer


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procedure FramebufferDeviceShowCursor(Framebuffer:PFramebufferDevice);
Description: Save the framebuffer area under the cursor to the cursor buffer and merge the cursor input with it to create the cursor output. Put the output to the framebuffer.


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function FramebufferCursorToString(State:LongWord):String;
Description: To be documented


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function FramebufferDepthToString(Depth:LongWord):String;
Description: To be documented


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function FramebufferOrderToString(Order:LongWord):String;
Description: To be documented


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function FramebufferModeToString(Mode:LongWord):String;
Description: To be documented


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function FramebufferRotationToString(Rotation:LongWord):String;
Description: To be documented


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