audk/Omap35xxPkg/LcdGraphicsOutputDxe/LcdGraphicsOutputBlt.c

446 lines
16 KiB
C

/** @file
Copyright (c) 2011, ARM Ltd. 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/BaseMemoryLib.h>
#include <Library/DevicePathLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Guid/GlobalVariable.h>
#include "LcdGraphicsOutputDxe.h"
extern BOOLEAN mDisplayInitialized;
//
// Function Definitions
//
STATIC
EFI_STATUS
VideoCopyNoHorizontalOverlap (
IN UINTN BitsPerPixel,
IN volatile VOID *FrameBufferBase,
IN UINT32 HorizontalResolution,
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height
)
{
EFI_STATUS Status = EFI_SUCCESS;
UINTN SourceLine;
UINTN DestinationLine;
UINTN WidthInBytes;
UINTN LineCount;
INTN Step;
VOID *SourceAddr;
VOID *DestinationAddr;
if( DestinationY <= SourceY ) {
// scrolling up (or horizontally but without overlap)
SourceLine = SourceY;
DestinationLine = DestinationY;
Step = 1;
} else {
// scrolling down
SourceLine = SourceY + Height;
DestinationLine = DestinationY + Height;
Step = -1;
}
WidthInBytes = Width * 2;
for( LineCount = 0; LineCount < Height; LineCount++ ) {
// Update the start addresses of source & destination using 16bit pointer arithmetic
SourceAddr = (VOID *)((UINT16 *)FrameBufferBase + SourceLine * HorizontalResolution + SourceX );
DestinationAddr = (VOID *)((UINT16 *)FrameBufferBase + DestinationLine * HorizontalResolution + DestinationX);
// Copy the entire line Y from video ram to the temp buffer
CopyMem( DestinationAddr, SourceAddr, WidthInBytes);
// Update the line numbers
SourceLine += Step;
DestinationLine += Step;
}
return Status;
}
STATIC
EFI_STATUS
VideoCopyHorizontalOverlap (
IN UINTN BitsPerPixel,
IN volatile VOID *FrameBufferBase,
UINT32 HorizontalResolution,
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height
)
{
EFI_STATUS Status = EFI_SUCCESS;
UINT16 *PixelBuffer16bit;
UINT16 *SourcePixel16bit;
UINT16 *DestinationPixel16bit;
UINT32 SourcePixelY;
UINT32 DestinationPixelY;
UINTN SizeIn16Bits;
// Allocate a temporary buffer
PixelBuffer16bit = (UINT16 *) AllocatePool((Height * Width) * sizeof(UINT16));
if (PixelBuffer16bit == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto EXIT;
}
// Access each pixel inside the source area of the Video Memory and copy it to the temp buffer
SizeIn16Bits = Width * 2;
for (SourcePixelY = SourceY, DestinationPixel16bit = PixelBuffer16bit;
SourcePixelY < SourceY + Height;
SourcePixelY++, DestinationPixel16bit += Width)
{
// Calculate the source address:
SourcePixel16bit = (UINT16 *)FrameBufferBase + SourcePixelY * HorizontalResolution + SourceX;
// Copy the entire line Y from Video to the temp buffer
CopyMem( (VOID *)DestinationPixel16bit, (CONST VOID *)SourcePixel16bit, SizeIn16Bits);
}
// Copy from the temp buffer into the destination area of the Video Memory
for (DestinationPixelY = DestinationY, SourcePixel16bit = PixelBuffer16bit;
DestinationPixelY < DestinationY + Height;
DestinationPixelY++, SourcePixel16bit += Width)
{
// Calculate the target address:
DestinationPixel16bit = (UINT16 *)FrameBufferBase + (DestinationPixelY * HorizontalResolution + DestinationX);
// Copy the entire line Y from the temp buffer to Video
CopyMem( (VOID *)DestinationPixel16bit, (CONST VOID *)SourcePixel16bit, SizeIn16Bits);
}
// Free the allocated memory
FreePool((VOID *) PixelBuffer16bit);
EXIT:
return Status;
}
STATIC
EFI_STATUS
BltVideoFill (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *EfiSourcePixel, OPTIONAL
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height,
IN UINTN Delta OPTIONAL // Number of BYTES in a row of the BltBuffer
)
{
EFI_PIXEL_BITMASK* PixelInformation;
EFI_STATUS Status;
UINT32 HorizontalResolution;
VOID *FrameBufferBase;
UINT16 *DestinationPixel16bit;
UINT16 Pixel16bit;
UINT32 DestinationPixelX;
UINT32 DestinationLine;
Status = EFI_SUCCESS;
PixelInformation = &This->Mode->Info->PixelInformation;
FrameBufferBase = (UINTN *)((UINTN)(This->Mode->FrameBufferBase));
HorizontalResolution = This->Mode->Info->HorizontalResolution;
// Convert the EFI pixel at the start of the BltBuffer(0,0) into a video display pixel
Pixel16bit = (UINT16) (
( (EfiSourcePixel->Red << 8) & PixelInformation->RedMask )
| ( (EfiSourcePixel->Green << 3) & PixelInformation->GreenMask )
| ( (EfiSourcePixel->Blue >> 3) & PixelInformation->BlueMask )
);
// Copy the SourcePixel into every pixel inside the target rectangle
for (DestinationLine = DestinationY;
DestinationLine < DestinationY + Height;
DestinationLine++)
{
for (DestinationPixelX = DestinationX;
DestinationPixelX < DestinationX + Width;
DestinationPixelX++)
{
// Calculate the target address:
DestinationPixel16bit = (UINT16 *)FrameBufferBase + DestinationLine * HorizontalResolution + DestinationPixelX;
// Copy the pixel into the new target
*DestinationPixel16bit = Pixel16bit;
}
}
return Status;
}
STATIC
EFI_STATUS
BltVideoToBltBuffer (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height,
IN UINTN Delta OPTIONAL // Number of BYTES in a row of the BltBuffer
)
{
EFI_STATUS Status;
UINT32 HorizontalResolution;
EFI_PIXEL_BITMASK *PixelInformation;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *EfiDestinationPixel;
VOID *FrameBufferBase;
UINT16 *SourcePixel16bit;
UINT16 Pixel16bit;
UINT32 SourcePixelX;
UINT32 SourceLine;
UINT32 DestinationPixelX;
UINT32 DestinationLine;
UINT32 BltBufferHorizontalResolution;
Status = EFI_SUCCESS;
PixelInformation = &This->Mode->Info->PixelInformation;
HorizontalResolution = This->Mode->Info->HorizontalResolution;
FrameBufferBase = (UINTN *)((UINTN)(This->Mode->FrameBufferBase));
if(( Delta != 0 ) && ( Delta != Width * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL))) {
// Delta is not zero and it is different from the width.
// Divide it by the size of a pixel to find out the buffer's horizontal resolution.
BltBufferHorizontalResolution = (UINT32) (Delta / sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
} else {
BltBufferHorizontalResolution = Width;
}
// Access each pixel inside the Video Memory
for (SourceLine = SourceY, DestinationLine = DestinationY;
SourceLine < SourceY + Height;
SourceLine++, DestinationLine++)
{
for (SourcePixelX = SourceX, DestinationPixelX = DestinationX;
SourcePixelX < SourceX + Width;
SourcePixelX++, DestinationPixelX++)
{
// Calculate the source and target addresses:
SourcePixel16bit = (UINT16 *)FrameBufferBase + SourceLine * HorizontalResolution + SourcePixelX;
EfiDestinationPixel = BltBuffer + DestinationLine * BltBufferHorizontalResolution + DestinationPixelX;
// Snapshot the pixel from the video buffer once, to speed up the operation.
// If we were dereferencing the pointer, as it is volatile, we would perform 3 memory read operations.
Pixel16bit = *SourcePixel16bit;
// Copy the pixel into the new target
EfiDestinationPixel->Red = (UINT8) ( (Pixel16bit & PixelInformation->RedMask ) >> 8 );
EfiDestinationPixel->Green = (UINT8) ( (Pixel16bit & PixelInformation->GreenMask ) >> 3 );
EfiDestinationPixel->Blue = (UINT8) ( (Pixel16bit & PixelInformation->BlueMask ) << 3 );
}
}
return Status;
}
STATIC
EFI_STATUS
BltBufferToVideo (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height,
IN UINTN Delta OPTIONAL // Number of BYTES in a row of the BltBuffer
)
{
EFI_STATUS Status;
UINT32 HorizontalResolution;
EFI_PIXEL_BITMASK *PixelInformation;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *EfiSourcePixel;
VOID *FrameBufferBase;
UINT16 *DestinationPixel16bit;
UINT32 SourcePixelX;
UINT32 SourceLine;
UINT32 DestinationPixelX;
UINT32 DestinationLine;
UINT32 BltBufferHorizontalResolution;
Status = EFI_SUCCESS;
PixelInformation = &This->Mode->Info->PixelInformation;
HorizontalResolution = This->Mode->Info->HorizontalResolution;
FrameBufferBase = (UINTN *)((UINTN)(This->Mode->FrameBufferBase));
if(( Delta != 0 ) && ( Delta != Width * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL))) {
// Delta is not zero and it is different from the width.
// Divide it by the size of a pixel to find out the buffer's horizontal resolution.
BltBufferHorizontalResolution = (UINT32) (Delta / sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
} else {
BltBufferHorizontalResolution = Width;
}
// Access each pixel inside the BltBuffer Memory
for (SourceLine = SourceY, DestinationLine = DestinationY;
SourceLine < SourceY + Height;
SourceLine++, DestinationLine++) {
for (SourcePixelX = SourceX, DestinationPixelX = DestinationX;
SourcePixelX < SourceX + Width;
SourcePixelX++, DestinationPixelX++)
{
// Calculate the source and target addresses:
EfiSourcePixel = BltBuffer + SourceLine * BltBufferHorizontalResolution + SourcePixelX;
DestinationPixel16bit = (UINT16 *)FrameBufferBase + DestinationLine * HorizontalResolution + DestinationPixelX;
// Copy the pixel into the new target
// Only the most significant bits will be copied across:
// To convert from 8 bits to 5 bits per pixel we throw away the 3 least significant bits
*DestinationPixel16bit = (UINT16) (
( (EfiSourcePixel->Red << 8) & PixelInformation->RedMask )
| ( (EfiSourcePixel->Green << 3) & PixelInformation->GreenMask )
| ( (EfiSourcePixel->Blue >> 3) & PixelInformation->BlueMask )
);
}
}
return Status;
}
STATIC
EFI_STATUS
BltVideoToVideo (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height,
IN UINTN Delta OPTIONAL // Number of BYTES in a row of the BltBuffer
)
{
EFI_STATUS Status;
UINT32 HorizontalResolution;
UINTN BitsPerPixel;
VOID *FrameBufferBase;
BitsPerPixel = 16;
HorizontalResolution = This->Mode->Info->HorizontalResolution;
FrameBufferBase = (UINTN *)((UINTN)(This->Mode->FrameBufferBase));
//
// BltVideo to BltVideo:
//
// Source is the Video Memory,
// Destination is the Video Memory
FrameBufferBase = (UINTN *)((UINTN)(This->Mode->FrameBufferBase));
// The UEFI spec currently states:
// "There is no limitation on the overlapping of the source and destination rectangles"
// Therefore, we must be careful to avoid overwriting the source data
if( SourceY == DestinationY ) {
// Copying within the same height, e.g. horizontal shift
if( SourceX == DestinationX ) {
// Nothing to do
Status = EFI_SUCCESS;
} else if( ((SourceX>DestinationX)?(SourceX - DestinationX):(DestinationX - SourceX)) < Width ) {
// There is overlap
Status = VideoCopyHorizontalOverlap (BitsPerPixel, FrameBufferBase, HorizontalResolution, SourceX, SourceY, DestinationX, DestinationY, Width, Height );
} else {
// No overlap
Status = VideoCopyNoHorizontalOverlap (BitsPerPixel, FrameBufferBase, HorizontalResolution, SourceX, SourceY, DestinationX, DestinationY, Width, Height );
}
} else {
// Copying from different heights
Status = VideoCopyNoHorizontalOverlap (BitsPerPixel, FrameBufferBase, HorizontalResolution, SourceX, SourceY, DestinationX, DestinationY, Width, Height );
}
return Status;
}
EFI_STATUS
EFIAPI
LcdGraphicsBlt (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN OUT 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 OPTIONAL // Number of BYTES in a row of the BltBuffer
)
{
EFI_STATUS Status;
LCD_INSTANCE *Instance;
Instance = LCD_INSTANCE_FROM_GOP_THIS(This);
if (!mDisplayInitialized) {
InitializeDisplay (Instance);
}
switch (BltOperation) {
case EfiBltVideoFill:
Status = BltVideoFill (This, BltBuffer, SourceX, SourceY, DestinationX, DestinationY, Width, Height, Delta);
break;
case EfiBltVideoToBltBuffer:
Status = BltVideoToBltBuffer (This, BltBuffer, SourceX, SourceY, DestinationX, DestinationY, Width, Height, Delta);
break;
case EfiBltBufferToVideo:
Status = BltBufferToVideo (This, BltBuffer, SourceX, SourceY, DestinationX, DestinationY, Width, Height, Delta);
break;
case EfiBltVideoToVideo:
Status = BltVideoToVideo (This, BltBuffer, SourceX, SourceY, DestinationX, DestinationY, Width, Height, Delta);
break;
case EfiGraphicsOutputBltOperationMax:
default:
DEBUG((DEBUG_ERROR, "LcdGraphicsBlt: Invalid Operation\n"));
Status = EFI_INVALID_PARAMETER;
break;
}
return Status;
}