/** @file | |
Graphics Output Protocol from the UEFI 2.0 specification. | |
Abstraction of a very simple graphics device. | |
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#ifndef __GRAPHICS_OUTPUT_H__ | |
#define __GRAPHICS_OUTPUT_H__ | |
#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ | |
{ \ | |
0x9042a9de, 0x23dc, 0x4a38, {0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a } \ | |
} | |
typedef struct _EFI_GRAPHICS_OUTPUT_PROTOCOL EFI_GRAPHICS_OUTPUT_PROTOCOL; | |
typedef struct { | |
UINT32 RedMask; | |
UINT32 GreenMask; | |
UINT32 BlueMask; | |
UINT32 ReservedMask; | |
} EFI_PIXEL_BITMASK; | |
typedef enum { | |
/// | |
/// A pixel is 32-bits and byte zero represents red, byte one represents green, | |
/// byte two represents blue, and byte three is reserved. This is the definition | |
/// for the physical frame buffer. The byte values for the red, green, and blue | |
/// components represent the color intensity. This color intensity value range | |
/// from a minimum intensity of 0 to maximum intensity of 255. | |
/// | |
PixelRedGreenBlueReserved8BitPerColor, | |
/// | |
/// A pixel is 32-bits and byte zero represents blue, byte one represents green, | |
/// byte two represents red, and byte three is reserved. This is the definition | |
/// for the physical frame buffer. The byte values for the red, green, and blue | |
/// components represent the color intensity. This color intensity value range | |
/// from a minimum intensity of 0 to maximum intensity of 255. | |
/// | |
PixelBlueGreenRedReserved8BitPerColor, | |
/// | |
/// The Pixel definition of the physical frame buffer. | |
/// | |
PixelBitMask, | |
/// | |
/// This mode does not support a physical frame buffer. | |
/// | |
PixelBltOnly, | |
/// | |
/// Valid EFI_GRAPHICS_PIXEL_FORMAT enum values are less than this value. | |
/// | |
PixelFormatMax | |
} EFI_GRAPHICS_PIXEL_FORMAT; | |
typedef struct { | |
/// | |
/// The version of this data structure. A value of zero represents the | |
/// EFI_GRAPHICS_OUTPUT_MODE_INFORMATION structure as defined in this specification. | |
/// | |
UINT32 Version; | |
/// | |
/// The size of video screen in pixels in the X dimension. | |
/// | |
UINT32 HorizontalResolution; | |
/// | |
/// The size of video screen in pixels in the Y dimension. | |
/// | |
UINT32 VerticalResolution; | |
/// | |
/// Enumeration that defines the physical format of the pixel. A value of PixelBltOnly | |
/// implies that a linear frame buffer is not available for this mode. | |
/// | |
EFI_GRAPHICS_PIXEL_FORMAT PixelFormat; | |
/// | |
/// This bit-mask is only valid if PixelFormat is set to PixelPixelBitMask. | |
/// A bit being set defines what bits are used for what purpose such as Red, Green, Blue, or Reserved. | |
/// | |
EFI_PIXEL_BITMASK PixelInformation; | |
/// | |
/// Defines the number of pixel elements per video memory line. | |
/// | |
UINT32 PixelsPerScanLine; | |
} EFI_GRAPHICS_OUTPUT_MODE_INFORMATION; | |
/** | |
Returns information for an available graphics mode that the graphics device | |
and the set of active video output devices supports. | |
@param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance. | |
@param ModeNumber The mode number to return information on. | |
@param SizeOfInfo A pointer to the size, in bytes, of the Info buffer. | |
@param Info A pointer to callee allocated buffer that returns information about ModeNumber. | |
@retval EFI_SUCCESS Valid mode information was returned. | |
@retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode. | |
@retval EFI_INVALID_PARAMETER ModeNumber is not valid. | |
**/ | |
typedef | |
EFI_STATUS | |
(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE)( | |
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, | |
IN UINT32 ModeNumber, | |
OUT UINTN *SizeOfInfo, | |
OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info | |
); | |
/** | |
Set the video device into the specified mode and clears the visible portions of | |
the output display to black. | |
@param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance. | |
@param ModeNumber Abstraction that defines the current video mode. | |
@retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected. | |
@retval EFI_DEVICE_ERROR The device had an error and could not complete the request. | |
@retval EFI_UNSUPPORTED ModeNumber is not supported by this device. | |
**/ | |
typedef | |
EFI_STATUS | |
(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE)( | |
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, | |
IN UINT32 ModeNumber | |
); | |
typedef struct { | |
UINT8 Blue; | |
UINT8 Green; | |
UINT8 Red; | |
UINT8 Reserved; | |
} EFI_GRAPHICS_OUTPUT_BLT_PIXEL; | |
typedef union { | |
EFI_GRAPHICS_OUTPUT_BLT_PIXEL Pixel; | |
UINT32 Raw; | |
} EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION; | |
/// | |
/// actions for BltOperations | |
/// | |
typedef enum { | |
/// | |
/// Write data from the BltBuffer pixel (0, 0) | |
/// directly to every pixel of the video display rectangle | |
/// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height). | |
/// Only one pixel will be used from the BltBuffer. Delta is NOT used. | |
/// | |
EfiBltVideoFill, | |
/// | |
/// Read data from the video display rectangle | |
/// (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in | |
/// the BltBuffer rectangle (DestinationX, DestinationY ) | |
/// (DestinationX + Width, DestinationY + Height). If DestinationX or | |
/// DestinationY is not zero then Delta must be set to the length in bytes | |
/// of a row in the BltBuffer. | |
/// | |
EfiBltVideoToBltBuffer, | |
/// | |
/// Write data from the BltBuffer rectangle | |
/// (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the | |
/// video display rectangle (DestinationX, DestinationY) | |
/// (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is | |
/// not zero then Delta must be set to the length in bytes of a row in the | |
/// BltBuffer. | |
/// | |
EfiBltBufferToVideo, | |
/// | |
/// Copy from the video display rectangle (SourceX, SourceY) | |
/// (SourceX + Width, SourceY + Height) to the video display rectangle | |
/// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height). | |
/// The BltBuffer and Delta are not used in this mode. | |
/// | |
EfiBltVideoToVideo, | |
EfiGraphicsOutputBltOperationMax | |
} EFI_GRAPHICS_OUTPUT_BLT_OPERATION; | |
/** | |
Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer. | |
@param This Protocol instance pointer. | |
@param BltBuffer The data to transfer to the graphics screen. | |
Size is at least Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL). | |
@param BltOperation The operation to perform when copying BltBuffer on to the graphics screen. | |
@param SourceX The X coordinate of source for the BltOperation. | |
@param SourceY The Y coordinate of source for the BltOperation. | |
@param DestinationX The X coordinate of destination for the BltOperation. | |
@param DestinationY The Y coordinate of destination for the BltOperation. | |
@param Width The width of a rectangle in the blt rectangle in pixels. | |
@param Height The height of a rectangle in the blt rectangle in pixels. | |
@param Delta Not used for EfiBltVideoFill or the EfiBltVideoToVideo operation. | |
If a Delta of zero is used, the entire BltBuffer is being operated on. | |
If a subrectangle of the BltBuffer is being used then Delta | |
represents the number of bytes in a row of the BltBuffer. | |
@retval EFI_SUCCESS BltBuffer was drawn to the graphics screen. | |
@retval EFI_INVALID_PARAMETER BltOperation is not valid. | |
@retval EFI_DEVICE_ERROR The device had an error and could not complete the request. | |
**/ | |
typedef | |
EFI_STATUS | |
(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT)( | |
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, | |
IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL | |
IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation, | |
IN UINTN SourceX, | |
IN UINTN SourceY, | |
IN UINTN DestinationX, | |
IN UINTN DestinationY, | |
IN UINTN Width, | |
IN UINTN Height, | |
IN UINTN Delta OPTIONAL | |
); | |
typedef struct { | |
/// | |
/// The number of modes supported by QueryMode() and SetMode(). | |
/// | |
UINT32 MaxMode; | |
/// | |
/// Current Mode of the graphics device. Valid mode numbers are 0 to MaxMode -1. | |
/// | |
UINT32 Mode; | |
/// | |
/// Pointer to read-only EFI_GRAPHICS_OUTPUT_MODE_INFORMATION data. | |
/// | |
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info; | |
/// | |
/// Size of Info structure in bytes. | |
/// | |
UINTN SizeOfInfo; | |
/// | |
/// Base address of graphics linear frame buffer. | |
/// Offset zero in FrameBufferBase represents the upper left pixel of the display. | |
/// | |
EFI_PHYSICAL_ADDRESS FrameBufferBase; | |
/// | |
/// Amount of frame buffer needed to support the active mode as defined by | |
/// PixelsPerScanLine xVerticalResolution x PixelElementSize. | |
/// | |
UINTN FrameBufferSize; | |
} EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE; | |
/// | |
/// Provides a basic abstraction to set video modes and copy pixels to and from | |
/// the graphics controller's frame buffer. The linear address of the hardware | |
/// frame buffer is also exposed so software can write directly to the video hardware. | |
/// | |
struct _EFI_GRAPHICS_OUTPUT_PROTOCOL { | |
EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE QueryMode; | |
EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE SetMode; | |
EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT Blt; | |
/// | |
/// Pointer to EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE data. | |
/// | |
EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *Mode; | |
}; | |
extern EFI_GUID gEfiGraphicsOutputProtocolGuid; | |
#endif |