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/** @file
UGA Draw protocol from the EFI 1.10 specification.
Abstraction of a very simple graphics device.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __UGA_DRAW_H__
#define __UGA_DRAW_H__
#define EFI_UGA_DRAW_PROTOCOL_GUID \
{ \
0x982c298b, 0xf4fa, 0x41cb, {0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 } \
}
typedef struct _EFI_UGA_DRAW_PROTOCOL EFI_UGA_DRAW_PROTOCOL;
/**
Return the current video mode information.
@param This The EFI_UGA_DRAW_PROTOCOL instance.
@param HorizontalResolution The size of video screen in pixels in the X dimension.
@param VerticalResolution The size of video screen in pixels in the Y dimension.
@param ColorDepth Number of bits per pixel, currently defined to be 32.
@param RefreshRate The refresh rate of the monitor in Hertz.
@retval EFI_SUCCESS Mode information returned.
@retval EFI_NOT_STARTED Video display is not initialized. Call SetMode ()
@retval EFI_INVALID_PARAMETER One of the input args was NULL.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_UGA_DRAW_PROTOCOL_GET_MODE)(
IN EFI_UGA_DRAW_PROTOCOL *This,
OUT UINT32 *HorizontalResolution,
OUT UINT32 *VerticalResolution,
OUT UINT32 *ColorDepth,
OUT UINT32 *RefreshRate
);
/**
Set the current video mode information.
@param This The EFI_UGA_DRAW_PROTOCOL instance.
@param HorizontalResolution The size of video screen in pixels in the X dimension.
@param VerticalResolution The size of video screen in pixels in the Y dimension.
@param ColorDepth Number of bits per pixel, currently defined to be 32.
@param RefreshRate The refresh rate of the monitor in Hertz.
@retval EFI_SUCCESS Mode information returned.
@retval EFI_NOT_STARTED Video display is not initialized. Call SetMode ()
**/
typedef
EFI_STATUS
(EFIAPI *EFI_UGA_DRAW_PROTOCOL_SET_MODE)(
IN EFI_UGA_DRAW_PROTOCOL *This,
IN UINT32 HorizontalResolution,
IN UINT32 VerticalResolution,
IN UINT32 ColorDepth,
IN UINT32 RefreshRate
);
typedef struct {
UINT8 Blue;
UINT8 Green;
UINT8 Red;
UINT8 Reserved;
} EFI_UGA_PIXEL;
typedef union {
EFI_UGA_PIXEL Pixel;
UINT32 Raw;
} EFI_UGA_PIXEL_UNION;
///
/// Enumration value for actions of Blt operations.
///
typedef enum {
EfiUgaVideoFill, ///< Write data from the BltBuffer pixel (SourceX, SourceY)
///< 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.
EfiUgaVideoToBltBuffer, ///< 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.
EfiUgaBltBufferToVideo, ///< 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.
EfiUgaVideoToVideo, ///< 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.
EfiUgaBltMax ///< Maxmimum value for enumration value of Blt operation. If a Blt operation
///< larger or equal to this enumration value, it is invalid.
} EFI_UGA_BLT_OPERATION;
/**
Blt a rectangle of pixels on the graphics screen.
@param[in] This - Protocol instance pointer.
@param[in] BltBuffer - Buffer containing data to blit into video buffer. This
buffer has a size of Width*Height*sizeof(EFI_UGA_PIXEL)
@param[in] BltOperation - Operation to perform on BlitBuffer and video memory
@param[in] SourceX - X coordinate of source for the BltBuffer.
@param[in] SourceY - Y coordinate of source for the BltBuffer.
@param[in] DestinationX - X coordinate of destination for the BltBuffer.
@param[in] DestinationY - Y coordinate of destination for the BltBuffer.
@param[in] Width - Width of rectangle in BltBuffer in pixels.
@param[in] Height - Hight of rectangle in BltBuffer in pixels.
@param[in] Delta - OPTIONAL
@retval EFI_SUCCESS - The Blt operation completed.
@retval EFI_INVALID_PARAMETER - BltOperation is not valid.
@retval EFI_DEVICE_ERROR - A hardware error occurred writting to the video buffer.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_UGA_DRAW_PROTOCOL_BLT)(
IN EFI_UGA_DRAW_PROTOCOL *This,
IN EFI_UGA_PIXEL *BltBuffer OPTIONAL,
IN EFI_UGA_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
);
///
/// This protocol provides a basic abstraction to set video modes and
/// copy pixels to and from the graphics controller's frame buffer.
///
struct _EFI_UGA_DRAW_PROTOCOL {
EFI_UGA_DRAW_PROTOCOL_GET_MODE GetMode;
EFI_UGA_DRAW_PROTOCOL_SET_MODE SetMode;
EFI_UGA_DRAW_PROTOCOL_BLT Blt;
};
extern EFI_GUID gEfiUgaDrawProtocolGuid;
#endif
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