diff options
Diffstat (limited to 'OptionRomPkg/Library/FrameBufferBltLib/FrameBufferBltLib.c')
| -rw-r--r-- | OptionRomPkg/Library/FrameBufferBltLib/FrameBufferBltLib.c | 750 |
1 files changed, 0 insertions, 750 deletions
diff --git a/OptionRomPkg/Library/FrameBufferBltLib/FrameBufferBltLib.c b/OptionRomPkg/Library/FrameBufferBltLib/FrameBufferBltLib.c deleted file mode 100644 index 955ae3dfea..0000000000 --- a/OptionRomPkg/Library/FrameBufferBltLib/FrameBufferBltLib.c +++ /dev/null @@ -1,750 +0,0 @@ -/** @file
- FrameBufferBltLib - Library to perform blt operations on a frame buffer.
-
- Copyright (c) 2007 - 2011, 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.
-
-**/
-
-#include "PiDxe.h"
-#include <Library/BaseLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/BltLib.h>
-#include <Library/DebugLib.h>
-
-#if 0
-#define VDEBUG DEBUG
-#else
-#define VDEBUG(x)
-#endif
-
-#define MAX_LINE_BUFFER_SIZE (SIZE_4KB * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
-
-UINTN mBltLibColorDepth;
-UINTN mBltLibWidthInBytes;
-UINTN mBltLibBytesPerPixel;
-UINTN mBltLibWidthInPixels;
-UINTN mBltLibHeight;
-UINT8 mBltLibLineBuffer[MAX_LINE_BUFFER_SIZE];
-UINT8 *mBltLibFrameBuffer;
-EFI_GRAPHICS_PIXEL_FORMAT mPixelFormat;
-EFI_PIXEL_BITMASK mPixelBitMasks;
-INTN mPixelShl[4]; // R-G-B-Rsvd
-INTN mPixelShr[4]; // R-G-B-Rsvd
-
-
-VOID
-ConfigurePixelBitMaskFormat (
- IN EFI_PIXEL_BITMASK *BitMask
- )
-{
- UINTN Loop;
- UINT32 *Masks;
- UINT32 MergedMasks;
-
- MergedMasks = 0;
- Masks = (UINT32*) BitMask;
- for (Loop = 0; Loop < 3; Loop++) {
- ASSERT ((Loop == 3) || (Masks[Loop] != 0));
- ASSERT ((MergedMasks & Masks[Loop]) == 0);
- mPixelShl[Loop] = HighBitSet32 (Masks[Loop]) - 23 + (Loop * 8);
- if (mPixelShl[Loop] < 0) {
- mPixelShr[Loop] = -mPixelShl[Loop];
- mPixelShl[Loop] = 0;
- } else {
- mPixelShr[Loop] = 0;
- }
- MergedMasks = (UINT32) (MergedMasks | Masks[Loop]);
- DEBUG ((EFI_D_INFO, "%d: shl:%d shr:%d mask:%x\n", Loop, mPixelShl[Loop], mPixelShr[Loop], Masks[Loop]));
- }
- MergedMasks = (UINT32) (MergedMasks | Masks[3]);
-
- ASSERT (MergedMasks != 0);
- mBltLibBytesPerPixel = (UINTN) ((HighBitSet32 (MergedMasks) + 7) / 8);
-
- DEBUG ((EFI_D_INFO, "Bytes per pixel: %d\n", mBltLibBytesPerPixel));
-
- CopyMem (&mPixelBitMasks, BitMask, sizeof (*BitMask));
-}
-
-
-/**
- Configure the FrameBufferLib instance
-
- @param[in] FrameBuffer Pointer to the start of the frame buffer
- @param[in] FrameBufferInfo Describes the frame buffer characteristics
-
- @retval EFI_INVALID_PARAMETER - Invalid parameter
- @retval EFI_UNSUPPORTED - The BltLib does not support this configuration
- @retval EFI_SUCCESS - Blt operation success
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibConfigure (
- IN VOID *FrameBuffer,
- IN EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *FrameBufferInfo
- )
-{
- STATIC EFI_PIXEL_BITMASK RgbPixelMasks =
- { 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000 };
- STATIC EFI_PIXEL_BITMASK BgrPixelMasks =
- { 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 };
-
- switch (FrameBufferInfo->PixelFormat) {
- case PixelRedGreenBlueReserved8BitPerColor:
- ConfigurePixelBitMaskFormat (&RgbPixelMasks);
- break;
- case PixelBlueGreenRedReserved8BitPerColor:
- ConfigurePixelBitMaskFormat (&BgrPixelMasks);
- break;
- case PixelBitMask:
- ConfigurePixelBitMaskFormat (&(FrameBufferInfo->PixelInformation));
- break;
- case PixelBltOnly:
- ASSERT (FrameBufferInfo->PixelFormat != PixelBltOnly);
- return EFI_UNSUPPORTED;
- default:
- ASSERT (FALSE);
- return EFI_INVALID_PARAMETER;
- }
- mPixelFormat = FrameBufferInfo->PixelFormat;
-
- mBltLibFrameBuffer = (UINT8*) FrameBuffer;
- mBltLibWidthInPixels = (UINTN) FrameBufferInfo->HorizontalResolution;
- mBltLibHeight = (UINTN) FrameBufferInfo->VerticalResolution;
- mBltLibWidthInBytes = mBltLibWidthInPixels * mBltLibBytesPerPixel;
-
- ASSERT (mBltLibWidthInBytes < sizeof (mBltLibLineBuffer));
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Performs a UEFI Graphics Output Protocol Blt operation.
-
- @param[in,out] BltBuffer - The data to transfer to screen
- @param[in] BltOperation - The operation to perform
- @param[in] SourceX - The X coordinate of the source for BltOperation
- @param[in] SourceY - The Y coordinate of the source for BltOperation
- @param[in] DestinationX - The X coordinate of the destination for BltOperation
- @param[in] DestinationY - The Y coordinate of the destination for BltOperation
- @param[in] Width - The width of a rectangle in the blt rectangle in pixels
- @param[in] Height - The height of a rectangle in the blt rectangle in pixels
- @param[in] Delta - Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.
- If a Delta of 0 is used, the entire BltBuffer will be operated on.
- If a subrectangle of the BltBuffer is used, then Delta represents
- the number of bytes in a row of the BltBuffer.
-
- @retval EFI_DEVICE_ERROR - A hardware error occured
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - Blt operation success
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibGopBlt (
- 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
- )
-{
- switch (BltOperation) {
- case EfiBltVideoToBltBuffer:
- return BltLibVideoToBltBufferEx (
- BltBuffer,
- SourceX,
- SourceY,
- DestinationX,
- DestinationY,
- Width,
- Height,
- Delta
- );
-
- case EfiBltVideoToVideo:
- return BltLibVideoToVideo (
- SourceX,
- SourceY,
- DestinationX,
- DestinationY,
- Width,
- Height
- );
-
- case EfiBltVideoFill:
- return BltLibVideoFill (
- BltBuffer,
- DestinationX,
- DestinationY,
- Width,
- Height
- );
-
- case EfiBltBufferToVideo:
- return BltLibBufferToVideoEx (
- BltBuffer,
- SourceX,
- SourceY,
- DestinationX,
- DestinationY,
- Width,
- Height,
- Delta
- );
- default:
- return EFI_INVALID_PARAMETER;
- }
-}
-
-
-/**
- Performs a UEFI Graphics Output Protocol Blt Video Fill.
-
- @param[in] Color Color to fill the region with
- @param[in] DestinationX X location to start fill operation
- @param[in] DestinationY Y location to start fill operation
- @param[in] Width Width (in pixels) to fill
- @param[in] Height Height to fill
-
- @retval EFI_DEVICE_ERROR - A hardware error occured
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - The sizes were returned
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibVideoFill (
- IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Color,
- IN UINTN DestinationX,
- IN UINTN DestinationY,
- IN UINTN Width,
- IN UINTN Height
- )
-{
- UINTN DstY;
- VOID *BltMemDst;
- UINTN X;
- UINT8 Uint8;
- UINT32 Uint32;
- UINT64 WideFill;
- BOOLEAN UseWideFill;
- BOOLEAN LineBufferReady;
- UINTN Offset;
- UINTN WidthInBytes;
- UINTN SizeInBytes;
-
- //
- // BltBuffer to Video: Source is BltBuffer, destination is Video
- //
- if (DestinationY + Height > mBltLibHeight) {
- DEBUG ((EFI_D_INFO, "VideoFill: Past screen (Y)\n"));
- return EFI_INVALID_PARAMETER;
- }
-
- if (DestinationX + Width > mBltLibWidthInPixels) {
- DEBUG ((EFI_D_INFO, "VideoFill: Past screen (X)\n"));
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width == 0 || Height == 0) {
- DEBUG ((EFI_D_INFO, "VideoFill: Width or Height is 0\n"));
- return EFI_INVALID_PARAMETER;
- }
-
- WidthInBytes = Width * mBltLibBytesPerPixel;
-
- Uint32 = *(UINT32*) Color;
- WideFill =
- (UINT32) (
- (((Uint32 << mPixelShl[0]) >> mPixelShr[0]) & mPixelBitMasks.RedMask) |
- (((Uint32 << mPixelShl[1]) >> mPixelShr[1]) & mPixelBitMasks.GreenMask) |
- (((Uint32 << mPixelShl[2]) >> mPixelShr[2]) & mPixelBitMasks.BlueMask)
- );
- VDEBUG ((EFI_D_INFO, "VideoFill: color=0x%x, wide-fill=0x%x\n", Uint32, WideFill));
-
- //
- // If the size of the pixel data evenly divides the sizeof
- // WideFill, then a wide fill operation can be used
- //
- UseWideFill = TRUE;
- if ((sizeof (WideFill) % mBltLibBytesPerPixel) == 0) {
- for (X = mBltLibBytesPerPixel; X < sizeof (WideFill); X++) {
- ((UINT8*)&WideFill)[X] = ((UINT8*)&WideFill)[X % mBltLibBytesPerPixel];
- }
- } else {
- //
- // If all the bytes in the pixel are the same value, then use
- // a wide fill operation.
- //
- for (
- X = 1, Uint8 = ((UINT8*)&WideFill)[0];
- X < mBltLibBytesPerPixel;
- X++) {
- if (Uint8 != ((UINT8*)&WideFill)[X]) {
- UseWideFill = FALSE;
- break;
- }
- }
- if (UseWideFill) {
- SetMem ((VOID*) &WideFill, sizeof (WideFill), Uint8);
- }
- }
-
- if (UseWideFill && (DestinationX == 0) && (Width == mBltLibWidthInPixels)) {
- VDEBUG ((EFI_D_INFO, "VideoFill (wide, one-shot)\n"));
- Offset = DestinationY * mBltLibWidthInPixels;
- Offset = mBltLibBytesPerPixel * Offset;
- BltMemDst = (VOID*) (mBltLibFrameBuffer + Offset);
- SizeInBytes = WidthInBytes * Height;
- if (SizeInBytes >= 8) {
- SetMem32 (BltMemDst, SizeInBytes & ~3, (UINT32) WideFill);
- SizeInBytes = SizeInBytes & 3;
- }
- if (SizeInBytes > 0) {
- SetMem (BltMemDst, SizeInBytes, (UINT8)(UINTN) WideFill);
- }
- } else {
- LineBufferReady = FALSE;
- for (DstY = DestinationY; DstY < (Height + DestinationY); DstY++) {
- Offset = (DstY * mBltLibWidthInPixels) + DestinationX;
- Offset = mBltLibBytesPerPixel * Offset;
- BltMemDst = (VOID*) (mBltLibFrameBuffer + Offset);
-
- if (UseWideFill && (((UINTN) BltMemDst & 7) == 0)) {
- VDEBUG ((EFI_D_INFO, "VideoFill (wide)\n"));
- SizeInBytes = WidthInBytes;
- if (SizeInBytes >= 8) {
- SetMem64 (BltMemDst, SizeInBytes & ~7, WideFill);
- SizeInBytes = SizeInBytes & 7;
- }
- if (SizeInBytes > 0) {
- CopyMem (BltMemDst, (VOID*) &WideFill, SizeInBytes);
- }
- } else {
- VDEBUG ((EFI_D_INFO, "VideoFill (not wide)\n"));
- if (!LineBufferReady) {
- CopyMem (mBltLibLineBuffer, &WideFill, mBltLibBytesPerPixel);
- for (X = 1; X < Width; ) {
- CopyMem(
- (mBltLibLineBuffer + (X * mBltLibBytesPerPixel)),
- mBltLibLineBuffer,
- MIN (X, Width - X) * mBltLibBytesPerPixel
- );
- X = X + MIN (X, Width - X);
- }
- LineBufferReady = TRUE;
- }
- CopyMem (BltMemDst, mBltLibLineBuffer, WidthInBytes);
- }
- }
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Performs a UEFI Graphics Output Protocol Blt Video to Buffer operation.
-
- @param[out] BltBuffer Output buffer for pixel color data
- @param[in] SourceX X location within video
- @param[in] SourceY Y location within video
- @param[in] Width Width (in pixels)
- @param[in] Height Height
-
- @retval EFI_DEVICE_ERROR - A hardware error occured
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - The sizes were returned
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibVideoToBltBuffer (
- OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
- IN UINTN SourceX,
- IN UINTN SourceY,
- IN UINTN Width,
- IN UINTN Height
- )
-{
- return BltLibVideoToBltBufferEx (
- BltBuffer,
- SourceX,
- SourceY,
- 0,
- 0,
- Width,
- Height,
- 0
- );
-}
-
-
-/**
- Performs a UEFI Graphics Output Protocol Blt Video to Buffer operation
- with extended parameters.
-
- @param[out] BltBuffer Output buffer for pixel color data
- @param[in] SourceX X location within video
- @param[in] SourceY Y location within video
- @param[in] DestinationX X location within BltBuffer
- @param[in] DestinationY Y location within BltBuffer
- @param[in] Width Width (in pixels)
- @param[in] Height Height
- @param[in] Delta Number of bytes in a row of BltBuffer
-
- @retval EFI_DEVICE_ERROR - A hardware error occured
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - The sizes were returned
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibVideoToBltBufferEx (
- OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
- IN UINTN SourceX,
- IN UINTN SourceY,
- IN UINTN DestinationX,
- IN UINTN DestinationY,
- IN UINTN Width,
- IN UINTN Height,
- IN UINTN Delta
- )
-{
- UINTN DstY;
- UINTN SrcY;
- EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
- VOID *BltMemSrc;
- VOID *BltMemDst;
- UINTN X;
- UINT32 Uint32;
- UINTN Offset;
- UINTN WidthInBytes;
-
- //
- // Video to BltBuffer: Source is Video, destination is BltBuffer
- //
- if (SourceY + Height > mBltLibHeight) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (SourceX + Width > mBltLibWidthInPixels) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width == 0 || Height == 0) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // If Delta is zero, then the entire BltBuffer is being used, so Delta
- // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,
- // the number of bytes in each row can be computed.
- //
- if (Delta == 0) {
- Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
- }
-
- WidthInBytes = Width * mBltLibBytesPerPixel;
-
- //
- // Video to BltBuffer: Source is Video, destination is BltBuffer
- //
- for (SrcY = SourceY, DstY = DestinationY; DstY < (Height + DestinationY); SrcY++, DstY++) {
-
- Offset = (SrcY * mBltLibWidthInPixels) + SourceX;
- Offset = mBltLibBytesPerPixel * Offset;
- BltMemSrc = (VOID *) (mBltLibFrameBuffer + Offset);
-
- if (mPixelFormat == PixelBlueGreenRedReserved8BitPerColor) {
- BltMemDst =
- (VOID *) (
- (UINT8 *) BltBuffer +
- (DstY * Delta) +
- (DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
- );
- } else {
- BltMemDst = (VOID *) mBltLibLineBuffer;
- }
-
- CopyMem (BltMemDst, BltMemSrc, WidthInBytes);
-
- if (mPixelFormat != PixelBlueGreenRedReserved8BitPerColor) {
- for (X = 0; X < Width; X++) {
- Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) ((UINT8 *) BltBuffer + (DstY * Delta) + (DestinationX + X) * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
- Uint32 = *(UINT32*) (mBltLibLineBuffer + (X * mBltLibBytesPerPixel));
- *(UINT32*) Blt =
- (UINT32) (
- (((Uint32 & mPixelBitMasks.RedMask) >> mPixelShl[0]) << mPixelShr[0]) |
- (((Uint32 & mPixelBitMasks.GreenMask) >> mPixelShl[1]) << mPixelShr[1]) |
- (((Uint32 & mPixelBitMasks.BlueMask) >> mPixelShl[2]) << mPixelShr[2])
- );
- }
- }
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Performs a UEFI Graphics Output Protocol Blt Buffer to Video operation.
-
- @param[in] BltBuffer Output buffer for pixel color data
- @param[in] DestinationX X location within video
- @param[in] DestinationY Y location within video
- @param[in] Width Width (in pixels)
- @param[in] Height Height
-
- @retval EFI_DEVICE_ERROR - A hardware error occured
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - The sizes were returned
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibBufferToVideo (
- IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
- IN UINTN DestinationX,
- IN UINTN DestinationY,
- IN UINTN Width,
- IN UINTN Height
- )
-{
- return BltLibBufferToVideoEx (
- BltBuffer,
- 0,
- 0,
- DestinationX,
- DestinationY,
- Width,
- Height,
- 0
- );
-}
-
-
-/**
- Performs a UEFI Graphics Output Protocol Blt Buffer to Video operation
- with extended parameters.
-
- @param[in] BltBuffer Output buffer for pixel color data
- @param[in] SourceX X location within BltBuffer
- @param[in] SourceY Y location within BltBuffer
- @param[in] DestinationX X location within video
- @param[in] DestinationY Y location within video
- @param[in] Width Width (in pixels)
- @param[in] Height Height
- @param[in] Delta Number of bytes in a row of BltBuffer
-
- @retval EFI_DEVICE_ERROR - A hardware error occured
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - The sizes were returned
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibBufferToVideoEx (
- IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
- IN UINTN SourceX,
- IN UINTN SourceY,
- IN UINTN DestinationX,
- IN UINTN DestinationY,
- IN UINTN Width,
- IN UINTN Height,
- IN UINTN Delta
- )
-{
- UINTN DstY;
- UINTN SrcY;
- EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
- VOID *BltMemSrc;
- VOID *BltMemDst;
- UINTN X;
- UINT32 Uint32;
- UINTN Offset;
- UINTN WidthInBytes;
-
- //
- // BltBuffer to Video: Source is BltBuffer, destination is Video
- //
- if (DestinationY + Height > mBltLibHeight) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (DestinationX + Width > mBltLibWidthInPixels) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width == 0 || Height == 0) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // If Delta is zero, then the entire BltBuffer is being used, so Delta
- // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,
- // the number of bytes in each row can be computed.
- //
- if (Delta == 0) {
- Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
- }
-
- WidthInBytes = Width * mBltLibBytesPerPixel;
-
- for (SrcY = SourceY, DstY = DestinationY; SrcY < (Height + SourceY); SrcY++, DstY++) {
-
- Offset = (DstY * mBltLibWidthInPixels) + DestinationX;
- Offset = mBltLibBytesPerPixel * Offset;
- BltMemDst = (VOID*) (mBltLibFrameBuffer + Offset);
-
- if (mPixelFormat == PixelBlueGreenRedReserved8BitPerColor) {
- BltMemSrc = (VOID *) ((UINT8 *) BltBuffer + (SrcY * Delta));
- } else {
- for (X = 0; X < Width; X++) {
- Blt =
- (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) (
- (UINT8 *) BltBuffer +
- (SrcY * Delta) +
- ((SourceX + X) * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
- );
- Uint32 = *(UINT32*) Blt;
- *(UINT32*) (mBltLibLineBuffer + (X * mBltLibBytesPerPixel)) =
- (UINT32) (
- (((Uint32 << mPixelShl[0]) >> mPixelShr[0]) & mPixelBitMasks.RedMask) |
- (((Uint32 << mPixelShl[1]) >> mPixelShr[1]) & mPixelBitMasks.GreenMask) |
- (((Uint32 << mPixelShl[2]) >> mPixelShr[2]) & mPixelBitMasks.BlueMask)
- );
- }
- BltMemSrc = (VOID *) mBltLibLineBuffer;
- }
-
- CopyMem (BltMemDst, BltMemSrc, WidthInBytes);
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Performs a UEFI Graphics Output Protocol Blt Video to Video operation
-
- @param[in] SourceX X location within video
- @param[in] SourceY Y location within video
- @param[in] DestinationX X location within video
- @param[in] DestinationY Y location within video
- @param[in] Width Width (in pixels)
- @param[in] Height Height
-
- @retval EFI_DEVICE_ERROR - A hardware error occured
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - The sizes were returned
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibVideoToVideo (
- IN UINTN SourceX,
- IN UINTN SourceY,
- IN UINTN DestinationX,
- IN UINTN DestinationY,
- IN UINTN Width,
- IN UINTN Height
- )
-{
- VOID *BltMemSrc;
- VOID *BltMemDst;
- UINTN Offset;
- UINTN WidthInBytes;
- INTN LineStride;
-
- //
- // Video to Video: Source is Video, destination is Video
- //
- if (SourceY + Height > mBltLibHeight) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (SourceX + Width > mBltLibWidthInPixels) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (DestinationY + Height > mBltLibHeight) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (DestinationX + Width > mBltLibWidthInPixels) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width == 0 || Height == 0) {
- return EFI_INVALID_PARAMETER;
- }
-
- WidthInBytes = Width * mBltLibBytesPerPixel;
-
- Offset = (SourceY * mBltLibWidthInPixels) + SourceX;
- Offset = mBltLibBytesPerPixel * Offset;
- BltMemSrc = (VOID *) (mBltLibFrameBuffer + Offset);
-
- Offset = (DestinationY * mBltLibWidthInPixels) + DestinationX;
- Offset = mBltLibBytesPerPixel * Offset;
- BltMemDst = (VOID *) (mBltLibFrameBuffer + Offset);
-
- LineStride = mBltLibWidthInBytes;
- if ((UINTN) BltMemDst > (UINTN) BltMemSrc) {
- LineStride = -LineStride;
- }
-
- while (Height > 0) {
- CopyMem (BltMemDst, BltMemSrc, WidthInBytes);
-
- BltMemSrc = (VOID*) ((UINT8*) BltMemSrc + LineStride);
- BltMemDst = (VOID*) ((UINT8*) BltMemDst + LineStride);
- Height--;
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Returns the sizes related to the video device
-
- @param[out] Width Width (in pixels)
- @param[out] Height Height (in pixels)
-
- @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
- @retval EFI_SUCCESS - The sizes were returned
-
-**/
-EFI_STATUS
-EFIAPI
-BltLibGetSizes (
- OUT UINTN *Width, OPTIONAL
- OUT UINTN *Height OPTIONAL
- )
-{
- if (Width != NULL) {
- *Width = mBltLibWidthInPixels;
- }
- if (Height != NULL) {
- *Height = mBltLibHeight;
- }
-
- return EFI_SUCCESS;
-}
-
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