} EFI_PIXEL_BITMASK;\r
\r
typedef enum {\r
+ ///\r
+ /// A pixel is 32-bits and byte zero represents red, byte one represents green, \r
+ /// byte two represents blue, and byte three is reserved. This is the definition \r
+ /// for the physical frame buffer. The byte values for the red, green, and blue \r
+ /// components represent the color intensity. This color intensity value range \r
+ /// from a minimum intensity of 0 to maximum intensity of 255.\r
+ ///\r
PixelRedGreenBlueReserved8BitPerColor,\r
+ ///\r
+ /// A pixel is 32-bits and byte zero represents blue, byte one represents green, \r
+ /// byte two represents red, and byte three is reserved. This is the definition \r
+ /// for the physical frame buffer. The byte values for the red, green, and blue \r
+ /// components represent the color intensity. This color intensity value range \r
+ /// from a minimum intensity of 0 to maximum intensity of 255.\r
+ ///\r
PixelBlueGreenRedReserved8BitPerColor,\r
+ ///\r
+ /// The Pixel definition of the physical frame buffer.\r
+ ///\r
PixelBitMask,\r
+ ///\r
+ /// This mode does not support a physical frame buffer.\r
+ ///\r
PixelBltOnly,\r
+ ///\r
+ /// Valid EFI_GRAPHICS_PIXEL_FORMAT enum values are less than this value.\r
+ ///\r
PixelFormatMax\r
} EFI_GRAPHICS_PIXEL_FORMAT;\r
\r
typedef struct {\r
+ ///\r
+ /// The version of this data structure. A value of zero represents the \r
+ /// EFI_GRAPHICS_OUTPUT_MODE_INFORMATION structure as defined in this specification.\r
+ ///\r
UINT32 Version;\r
+ ///\r
+ /// The size of video screen in pixels in the X dimension.\r
+ ///\r
UINT32 HorizontalResolution;\r
+ ///\r
+ /// The size of video screen in pixels in the Y dimension.\r
+ ///\r
UINT32 VerticalResolution;\r
+ ///\r
+ /// Enumeration that defines the physical format of the pixel. A value of PixelBltOnly \r
+ /// implies that a linear frame buffer is not available for this mode.\r
+ ///\r
EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;\r
+ ///\r
+ /// This bit-mask is only valid if PixelFormat is set to PixelPixelBitMask. \r
+ /// A bit being set defines what bits are used for what purpose such as Red, Green, Blue, or Reserved.\r
+ ///\r
EFI_PIXEL_BITMASK PixelInformation;\r
+ ///\r
+ /// Defines the number of pixel elements per video memory line.\r
+ /// \r
UINT32 PixelsPerScanLine;\r
} EFI_GRAPHICS_OUTPUT_MODE_INFORMATION;\r
\r
/**\r
- Return the current video mode information.\r
+ Returns information for an available graphics mode that the graphics device\r
+ and the set of active video output devices supports.\r
\r
- @param This Protocol instance pointer.\r
- @param ModeNumber The mode number to return information on.\r
- @param SizeOfInfo A pointer to the size, in bytes, of the Info buffer.\r
- @param Info A pointer to callee allocated buffer that returns information about ModeNumber.\r
+ @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.\r
+ @param ModeNumber The mode number to return information on.\r
+ @param SizeOfInfo A pointer to the size, in bytes, of the Info buffer.\r
+ @param Info A pointer to callee allocated buffer that returns information about ModeNumber.\r
\r
@retval EFI_SUCCESS Mode information returned.\r
@retval EFI_BUFFER_TOO_SMALL The Info buffer was too small.\r
);\r
\r
/**\r
- Return the current video mode information.\r
+ Set the video device into the specified mode and clears the visible portions of \r
+ the output display to black.\r
\r
- @param This Protocol instance pointer.\r
- @param ModeNumber The mode number to be set.\r
+ @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.\r
+ @param ModeNumber Abstraction that defines the current video mode.\r
\r
- @retval EFI_SUCCESS Graphics mode was changed.\r
+ @retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected.\r
@retval EFI_DEVICE_ERROR The device had an error and could not complete the request.\r
@retval EFI_UNSUPPORTED ModeNumber is not supported by this device.\r
\r
UINT32 Raw;\r
} EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION;\r
\r
+///\r
+/// actions for BltOperations\r
+///\r
typedef enum {\r
+ ///\r
+ /// Write data from the BltBuffer pixel (SourceX, SourceY) \r
+ /// directly to every pixel of the video display rectangle \r
+ /// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height). \r
+ /// Only one pixel will be used from the BltBuffer. Delta is NOT used. \r
+ ///\r
EfiBltVideoFill,\r
+ \r
+ ///\r
+ /// Read data from the video display rectangle \r
+ /// (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in \r
+ /// the BltBuffer rectangle (DestinationX, DestinationY ) \r
+ /// (DestinationX + Width, DestinationY + Height). If DestinationX or \r
+ /// DestinationY is not zero then Delta must be set to the length in bytes \r
+ /// of a row in the BltBuffer. \r
+ ///\r
EfiBltVideoToBltBuffer,\r
+ \r
+ ///\r
+ /// Write data from the BltBuffer rectangle \r
+ /// (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the \r
+ /// video display rectangle (DestinationX, DestinationY) \r
+ /// (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is \r
+ /// not zero then Delta must be set to the length in bytes of a row in the \r
+ /// BltBuffer.\r
+ ///\r
EfiBltBufferToVideo, \r
+ \r
+ ///\r
+ /// Copy from the video display rectangle (SourceX, SourceY)\r
+ /// (SourceX + Width, SourceY + Height) .to the video display rectangle \r
+ /// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height). \r
+ /// The BltBuffer and Delta are not used in this mode.\r
+ /// EfiBltVideoToVideo,\r
+ ///\r
EfiBltVideoToVideo,\r
+ \r
EfiGraphicsOutputBltOperationMax\r
} EFI_GRAPHICS_OUTPUT_BLT_OPERATION;\r
\r
/**\r
- The following table defines actions for BltOperations:\r
-\r
- <B>EfiBltVideoFill</B> - Write data from the BltBuffer pixel (SourceX, SourceY) \r
- directly to every pixel of the video display rectangle \r
- (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height). \r
- Only one pixel will be used from the BltBuffer. Delta is NOT used.\r
-\r
- <B>EfiBltVideoToBltBuffer</B> - Read data from the video display rectangle \r
- (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in \r
- the BltBuffer rectangle (DestinationX, DestinationY ) \r
- (DestinationX + Width, DestinationY + Height). If DestinationX or \r
- DestinationY is not zero then Delta must be set to the length in bytes \r
- of a row in the BltBuffer.\r
-\r
- <B>EfiBltBufferToVideo</B> - Write data from the BltBuffer rectangle \r
- (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the \r
- video display rectangle (DestinationX, DestinationY) \r
- (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is \r
- not zero then Delta must be set to the length in bytes of a row in the \r
- BltBuffer.\r
-\r
- <B>EfiBltVideoToVideo</B> - Copy from the video display rectangle (SourceX, SourceY)\r
- (SourceX + Width, SourceY + Height) .to the video display rectangle \r
- (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height). \r
- The BltBuffer and Delta are not used in this mode.\r
-\r
+ Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.\r
+ \r
@param This Protocol instance pointer.\r
@param BltBuffer Buffer containing data to blit into video buffer. This\r
buffer has a size of Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)\r
);\r
\r
typedef struct {\r
+ ///\r
+ /// The number of modes supported by QueryMode() and SetMode().\r
+ ///\r
UINT32 MaxMode;\r
+ ///\r
+ /// Current Mode of the graphics device. Valid mode numbers are 0 to MaxMode -1.\r
+ ///\r
UINT32 Mode;\r
+ ///\r
+ /// Pointer to read-only EFI_GRAPHICS_OUTPUT_MODE_INFORMATION data.\r
+ ///\r
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;\r
+ ///\r
+ /// Size of Info structure in bytes.\r
+ ///\r
UINTN SizeOfInfo;\r
+ ///\r
+ /// Base address of graphics linear frame buffer.\r
+ /// Offset zero in FrameBufferBase represents the upper left pixel of the display.\r
+ ///\r
EFI_PHYSICAL_ADDRESS FrameBufferBase;\r
+ ///\r
+ /// Size of the frame buffer represented by FrameBufferBase in bytes.\r
+ ///\r
UINTN FrameBufferSize;\r
} EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE;\r
\r
-/**\r
- @par Protocol Description:\r
- Provides a basic abstraction to set video modes and copy pixels to and from \r
- the graphics controller's frame buffer. The linear address of the hardware \r
- frame buffer is also exposed so software can write directly to the video hardware.\r
-\r
- @param QueryMode\r
- Returns information for an available graphics mode that the graphics device \r
- and the set of active video output devices supports.\r
- \r
- @param SetMode \r
- Set the video device into the specified mode and clears the visible portions \r
- of the output display to black.\r
- \r
- @param Blt\r
- Software abstraction to draw on the video device's frame buffer.\r
- \r
- @param Mode\r
- Pointer to EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE data.\r
-\r
-**/\r
+///\r
+/// Provides a basic abstraction to set video modes and copy pixels to and from \r
+/// the graphics controller's frame buffer. The linear address of the hardware \r
+/// frame buffer is also exposed so software can write directly to the video hardware.\r
+///\r
struct _EFI_GRAPHICS_OUTPUT_PROTOCOL {\r
EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE QueryMode;\r
EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE SetMode;\r
EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT Blt;\r
+ ///\r
+ /// Pointer to EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE data.\r
+ ///\r
EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *Mode;\r
};\r
\r
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