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