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271 lines
10 KiB
C
271 lines
10 KiB
C
/** @file
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Graphics Output Protocol from the UEFI 2.0 specification.
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Abstraction of a very simple graphics device.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __GRAPHICS_OUTPUT_H__
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#define __GRAPHICS_OUTPUT_H__
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#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
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{ \
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0x9042a9de, 0x23dc, 0x4a38, {0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a } \
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}
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typedef struct _EFI_GRAPHICS_OUTPUT_PROTOCOL EFI_GRAPHICS_OUTPUT_PROTOCOL;
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typedef struct {
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UINT32 RedMask;
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UINT32 GreenMask;
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UINT32 BlueMask;
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UINT32 ReservedMask;
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} EFI_PIXEL_BITMASK;
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typedef enum {
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///
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/// A pixel is 32-bits and byte zero represents red, byte one represents green,
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/// byte two represents blue, and byte three is reserved. This is the definition
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/// for the physical frame buffer. The byte values for the red, green, and blue
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/// components represent the color intensity. This color intensity value range
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/// from a minimum intensity of 0 to maximum intensity of 255.
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///
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PixelRedGreenBlueReserved8BitPerColor,
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///
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/// A pixel is 32-bits and byte zero represents blue, byte one represents green,
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/// byte two represents red, and byte three is reserved. This is the definition
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/// for the physical frame buffer. The byte values for the red, green, and blue
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/// components represent the color intensity. This color intensity value range
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/// from a minimum intensity of 0 to maximum intensity of 255.
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///
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PixelBlueGreenRedReserved8BitPerColor,
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///
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/// The Pixel definition of the physical frame buffer.
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///
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PixelBitMask,
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///
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/// This mode does not support a physical frame buffer.
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///
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PixelBltOnly,
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///
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/// Valid EFI_GRAPHICS_PIXEL_FORMAT enum values are less than this value.
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///
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PixelFormatMax
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} EFI_GRAPHICS_PIXEL_FORMAT;
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typedef struct {
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///
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/// The version of this data structure. A value of zero represents the
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/// EFI_GRAPHICS_OUTPUT_MODE_INFORMATION structure as defined in this specification.
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///
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UINT32 Version;
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///
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/// The size of video screen in pixels in the X dimension.
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///
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UINT32 HorizontalResolution;
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///
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/// The size of video screen in pixels in the Y dimension.
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///
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UINT32 VerticalResolution;
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///
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/// Enumeration that defines the physical format of the pixel. A value of PixelBltOnly
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/// implies that a linear frame buffer is not available for this mode.
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///
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EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;
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///
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/// This bit-mask is only valid if PixelFormat is set to PixelPixelBitMask.
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/// A bit being set defines what bits are used for what purpose such as Red, Green, Blue, or Reserved.
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///
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EFI_PIXEL_BITMASK PixelInformation;
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///
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/// Defines the number of pixel elements per video memory line.
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///
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UINT32 PixelsPerScanLine;
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} EFI_GRAPHICS_OUTPUT_MODE_INFORMATION;
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/**
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Returns information for an available graphics mode that the graphics device
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and the set of active video output devices supports.
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@param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
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@param ModeNumber The mode number to return information on.
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@param SizeOfInfo A pointer to the size, in bytes, of the Info buffer.
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@param Info A pointer to callee allocated buffer that returns information about ModeNumber.
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@retval EFI_SUCCESS Valid mode information was returned.
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@retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode.
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@retval EFI_INVALID_PARAMETER ModeNumber is not valid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE)(
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN UINT32 ModeNumber,
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OUT UINTN *SizeOfInfo,
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OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info
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);
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/**
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Set the video device into the specified mode and clears the visible portions of
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the output display to black.
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@param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
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@param ModeNumber Abstraction that defines the current video mode.
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@retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected.
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@retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
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@retval EFI_UNSUPPORTED ModeNumber is not supported by this device.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE)(
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN UINT32 ModeNumber
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);
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typedef struct {
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UINT8 Blue;
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UINT8 Green;
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UINT8 Red;
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UINT8 Reserved;
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} EFI_GRAPHICS_OUTPUT_BLT_PIXEL;
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typedef union {
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL Pixel;
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UINT32 Raw;
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} EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION;
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///
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/// actions for BltOperations
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///
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typedef enum {
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///
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/// Write data from the BltBuffer pixel (0, 0)
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/// directly to every pixel of the video display rectangle
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/// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height).
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/// Only one pixel will be used from the BltBuffer. Delta is NOT used.
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///
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EfiBltVideoFill,
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///
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/// Read data from the video display rectangle
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/// (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
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/// the BltBuffer rectangle (DestinationX, DestinationY )
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/// (DestinationX + Width, DestinationY + Height). If DestinationX or
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/// DestinationY is not zero then Delta must be set to the length in bytes
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/// of a row in the BltBuffer.
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///
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EfiBltVideoToBltBuffer,
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///
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/// Write data from the BltBuffer rectangle
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/// (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
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/// video display rectangle (DestinationX, DestinationY)
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/// (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
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/// not zero then Delta must be set to the length in bytes of a row in the
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/// BltBuffer.
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///
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EfiBltBufferToVideo,
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///
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/// Copy from the video display rectangle (SourceX, SourceY)
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/// (SourceX + Width, SourceY + Height) to the video display rectangle
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/// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height).
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/// The BltBuffer and Delta are not used in this mode.
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///
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EfiBltVideoToVideo,
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EfiGraphicsOutputBltOperationMax
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} EFI_GRAPHICS_OUTPUT_BLT_OPERATION;
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/**
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Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.
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@param This Protocol instance pointer.
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@param BltBuffer The data to transfer to the graphics screen.
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Size is at least Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL).
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@param BltOperation The operation to perform when copying BltBuffer on to the graphics screen.
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@param SourceX The X coordinate of source for the BltOperation.
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@param SourceY The Y coordinate of source for the BltOperation.
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@param DestinationX The X coordinate of destination for the BltOperation.
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@param DestinationY The Y coordinate of destination for the BltOperation.
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@param Width The width of a rectangle in the blt rectangle in pixels.
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@param Height The height of a rectangle in the blt rectangle in pixels.
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@param Delta Not used for EfiBltVideoFill or the EfiBltVideoToVideo operation.
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If a Delta of zero is used, the entire BltBuffer is being operated on.
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If a subrectangle of the BltBuffer is being used then Delta
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represents the number of bytes in a row of the BltBuffer.
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@retval EFI_SUCCESS BltBuffer was drawn to the graphics screen.
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@retval EFI_INVALID_PARAMETER BltOperation is not valid.
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@retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT)(
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
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IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,
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IN UINTN SourceX,
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IN UINTN SourceY,
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IN UINTN DestinationX,
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IN UINTN DestinationY,
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IN UINTN Width,
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IN UINTN Height,
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IN UINTN Delta OPTIONAL
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);
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typedef struct {
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///
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/// The number of modes supported by QueryMode() and SetMode().
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///
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UINT32 MaxMode;
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///
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/// Current Mode of the graphics device. Valid mode numbers are 0 to MaxMode -1.
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///
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UINT32 Mode;
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///
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/// Pointer to read-only EFI_GRAPHICS_OUTPUT_MODE_INFORMATION data.
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///
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EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;
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///
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/// Size of Info structure in bytes.
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///
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UINTN SizeOfInfo;
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///
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/// Base address of graphics linear frame buffer.
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/// Offset zero in FrameBufferBase represents the upper left pixel of the display.
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///
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EFI_PHYSICAL_ADDRESS FrameBufferBase;
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///
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/// Amount of frame buffer needed to support the active mode as defined by
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/// PixelsPerScanLine xVerticalResolution x PixelElementSize.
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///
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UINTN FrameBufferSize;
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} EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE;
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///
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/// Provides a basic abstraction to set video modes and copy pixels to and from
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/// the graphics controller's frame buffer. The linear address of the hardware
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/// frame buffer is also exposed so software can write directly to the video hardware.
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///
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struct _EFI_GRAPHICS_OUTPUT_PROTOCOL {
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EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE QueryMode;
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EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE SetMode;
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EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT Blt;
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///
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/// Pointer to EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE data.
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///
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EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *Mode;
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};
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extern EFI_GUID gEfiGraphicsOutputProtocolGuid;
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#endif
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