2 Graphics Output Protocol from the UEFI 2.0 specification.
4 Abstraction of a very simple graphics device.
6 Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
17 #ifndef __GRAPHICS_OUTPUT_H__
18 #define __GRAPHICS_OUTPUT_H__
20 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
22 0x9042a9de, 0x23dc, 0x4a38, {0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a } \
25 typedef struct _EFI_GRAPHICS_OUTPUT_PROTOCOL EFI_GRAPHICS_OUTPUT_PROTOCOL
;
36 /// A pixel is 32-bits and byte zero represents red, byte one represents green,
37 /// byte two represents blue, and byte three is reserved. This is the definition
38 /// for the physical frame buffer. The byte values for the red, green, and blue
39 /// components represent the color intensity. This color intensity value range
40 /// from a minimum intensity of 0 to maximum intensity of 255.
42 PixelRedGreenBlueReserved8BitPerColor
,
44 /// A pixel is 32-bits and byte zero represents blue, byte one represents green,
45 /// byte two represents red, and byte three is reserved. This is the definition
46 /// for the physical frame buffer. The byte values for the red, green, and blue
47 /// components represent the color intensity. This color intensity value range
48 /// from a minimum intensity of 0 to maximum intensity of 255.
50 PixelBlueGreenRedReserved8BitPerColor
,
52 /// The Pixel definition of the physical frame buffer.
56 /// This mode does not support a physical frame buffer.
60 /// Valid EFI_GRAPHICS_PIXEL_FORMAT enum values are less than this value.
63 } EFI_GRAPHICS_PIXEL_FORMAT
;
67 /// The version of this data structure. A value of zero represents the
68 /// EFI_GRAPHICS_OUTPUT_MODE_INFORMATION structure as defined in this specification.
72 /// The size of video screen in pixels in the X dimension.
74 UINT32 HorizontalResolution
;
76 /// The size of video screen in pixels in the Y dimension.
78 UINT32 VerticalResolution
;
80 /// Enumeration that defines the physical format of the pixel. A value of PixelBltOnly
81 /// implies that a linear frame buffer is not available for this mode.
83 EFI_GRAPHICS_PIXEL_FORMAT PixelFormat
;
85 /// This bit-mask is only valid if PixelFormat is set to PixelPixelBitMask.
86 /// A bit being set defines what bits are used for what purpose such as Red, Green, Blue, or Reserved.
88 EFI_PIXEL_BITMASK PixelInformation
;
90 /// Defines the number of pixel elements per video memory line.
92 UINT32 PixelsPerScanLine
;
93 } EFI_GRAPHICS_OUTPUT_MODE_INFORMATION
;
96 Returns information for an available graphics mode that the graphics device
97 and the set of active video output devices supports.
99 @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
100 @param ModeNumber The mode number to return information on.
101 @param SizeOfInfo A pointer to the size, in bytes, of the Info buffer.
102 @param Info A pointer to callee allocated buffer that returns information about ModeNumber.
104 @retval EFI_SUCCESS Valid mode information was returned.
105 @retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode.
106 @retval EFI_INVALID_PARAMETER ModeNumber is not valid.
111 (EFIAPI
*EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE
)(
112 IN EFI_GRAPHICS_OUTPUT_PROTOCOL
*This
,
113 IN UINT32 ModeNumber
,
114 OUT UINTN
*SizeOfInfo
,
115 OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION
**Info
119 Set the video device into the specified mode and clears the visible portions of
120 the output display to black.
122 @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
123 @param ModeNumber Abstraction that defines the current video mode.
125 @retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected.
126 @retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
127 @retval EFI_UNSUPPORTED ModeNumber is not supported by this device.
132 (EFIAPI
*EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE
)(
133 IN EFI_GRAPHICS_OUTPUT_PROTOCOL
*This
,
142 } EFI_GRAPHICS_OUTPUT_BLT_PIXEL
;
145 EFI_GRAPHICS_OUTPUT_BLT_PIXEL Pixel
;
147 } EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION
;
150 /// actions for BltOperations
154 /// Write data from the BltBuffer pixel (0, 0)
155 /// directly to every pixel of the video display rectangle
156 /// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height).
157 /// Only one pixel will be used from the BltBuffer. Delta is NOT used.
162 /// Read data from the video display rectangle
163 /// (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
164 /// the BltBuffer rectangle (DestinationX, DestinationY )
165 /// (DestinationX + Width, DestinationY + Height). If DestinationX or
166 /// DestinationY is not zero then Delta must be set to the length in bytes
167 /// of a row in the BltBuffer.
169 EfiBltVideoToBltBuffer
,
172 /// Write data from the BltBuffer rectangle
173 /// (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
174 /// video display rectangle (DestinationX, DestinationY)
175 /// (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
176 /// not zero then Delta must be set to the length in bytes of a row in the
182 /// Copy from the video display rectangle (SourceX, SourceY)
183 /// (SourceX + Width, SourceY + Height) to the video display rectangle
184 /// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height).
185 /// The BltBuffer and Delta are not used in this mode.
189 EfiGraphicsOutputBltOperationMax
190 } EFI_GRAPHICS_OUTPUT_BLT_OPERATION
;
193 Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.
195 @param This Protocol instance pointer.
196 @param BltBuffer The data to transfer to the graphics screen.
197 Size is at least Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL).
198 @param BltOperation The operation to perform when copying BltBuffer on to the graphics screen.
199 @param SourceX The X coordinate of source for the BltOperation.
200 @param SourceY The Y coordinate of source for the BltOperation.
201 @param DestinationX The X coordinate of destination for the BltOperation.
202 @param DestinationY The Y coordinate of destination for the BltOperation.
203 @param Width The width of a rectangle in the blt rectangle in pixels.
204 @param Height The height of a rectangle in the blt rectangle in pixels.
205 @param Delta Not used for EfiBltVideoFill or the EfiBltVideoToVideo operation.
206 If a Delta of zero is used, the entire BltBuffer is being operated on.
207 If a subrectangle of the BltBuffer is being used then Delta
208 represents the number of bytes in a row of the BltBuffer.
210 @retval EFI_SUCCESS BltBuffer was drawn to the graphics screen.
211 @retval EFI_INVALID_PARAMETER BltOperation is not valid.
212 @retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
217 (EFIAPI
*EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT
)(
218 IN EFI_GRAPHICS_OUTPUT_PROTOCOL
*This
,
219 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL
*BltBuffer
, OPTIONAL
220 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation
,
223 IN UINTN DestinationX
,
224 IN UINTN DestinationY
,
227 IN UINTN Delta OPTIONAL
232 /// The number of modes supported by QueryMode() and SetMode().
236 /// Current Mode of the graphics device. Valid mode numbers are 0 to MaxMode -1.
240 /// Pointer to read-only EFI_GRAPHICS_OUTPUT_MODE_INFORMATION data.
242 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION
*Info
;
244 /// Size of Info structure in bytes.
248 /// Base address of graphics linear frame buffer.
249 /// Offset zero in FrameBufferBase represents the upper left pixel of the display.
251 EFI_PHYSICAL_ADDRESS FrameBufferBase
;
253 /// Amount of frame buffer needed to support the active mode as defined by
254 /// PixelsPerScanLine xVerticalResolution x PixelElementSize.
256 UINTN FrameBufferSize
;
257 } EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE
;
260 /// Provides a basic abstraction to set video modes and copy pixels to and from
261 /// the graphics controller's frame buffer. The linear address of the hardware
262 /// frame buffer is also exposed so software can write directly to the video hardware.
264 struct _EFI_GRAPHICS_OUTPUT_PROTOCOL
{
265 EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE QueryMode
;
266 EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE SetMode
;
267 EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT Blt
;
269 /// Pointer to EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE data.
271 EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE
*Mode
;
274 extern EFI_GUID gEfiGraphicsOutputProtocolGuid
;