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/*
* libeg/screen.c
* Screen handling functions
*
* Copyright (c) 2006 Christoph Pfisterer
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Christoph Pfisterer nor the names of the
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "libegint.h"
#include <efiUgaDraw.h>
#include <efiConsoleControl.h>
// Console defines and variables
static EFI_GUID ConsoleControlProtocolGuid = EFI_CONSOLE_CONTROL_PROTOCOL_GUID;
static EFI_CONSOLE_CONTROL_PROTOCOL *ConsoleControl = NULL;
static EFI_GUID UgaDrawProtocolGuid = EFI_UGA_DRAW_PROTOCOL_GUID;
static EFI_UGA_DRAW_PROTOCOL *UgaDraw = NULL;
static UINTN egScreenWidth = 800;
static UINTN egScreenHeight = 600;
//
// Screen handling
//
VOID egInitScreen(VOID)
{
EFI_STATUS Status;
UINT32 UGAWidth, UGAHeight, UGADepth, UGARefreshRate;
// get protocols
Status = LibLocateProtocol(&ConsoleControlProtocolGuid, (VOID **) &ConsoleControl);
if (EFI_ERROR(Status))
ConsoleControl = NULL;
Status = LibLocateProtocol(&UgaDrawProtocolGuid, (VOID **) &UgaDraw);
if (EFI_ERROR(Status))
UgaDraw = NULL;
// get screen size
if (UgaDraw != NULL) {
Status = UgaDraw->GetMode(UgaDraw, &UGAWidth, &UGAHeight, &UGADepth, &UGARefreshRate);
if (EFI_ERROR(Status)) {
UgaDraw = NULL; // graphics not available
} else {
egScreenWidth = UGAWidth;
egScreenHeight = UGAHeight;
}
}
}
VOID egGetScreenSize(OUT UINTN *ScreenWidth, OUT UINTN *ScreenHeight)
{
if (ScreenWidth != NULL)
*ScreenWidth = egScreenWidth;
if (ScreenHeight != NULL)
*ScreenHeight = egScreenHeight;
}
BOOLEAN egHasGraphicsMode(VOID)
{
return (UgaDraw != NULL) ? TRUE : FALSE;
}
BOOLEAN egIsGraphicsModeEnabled(VOID)
{
EFI_CONSOLE_CONTROL_SCREEN_MODE CurrentMode;
if (ConsoleControl != NULL) {
ConsoleControl->GetMode(ConsoleControl, &CurrentMode, NULL, NULL);
return (CurrentMode == EfiConsoleControlScreenGraphics) ? TRUE : FALSE;
}
return FALSE;
}
VOID egSetGraphicsModeEnabled(IN BOOLEAN Enable)
{
EFI_CONSOLE_CONTROL_SCREEN_MODE CurrentMode;
EFI_CONSOLE_CONTROL_SCREEN_MODE NewMode;
if (ConsoleControl != NULL) {
ConsoleControl->GetMode(ConsoleControl, &CurrentMode, NULL, NULL);
NewMode = Enable ? EfiConsoleControlScreenGraphics
: EfiConsoleControlScreenText;
if (CurrentMode != NewMode)
ConsoleControl->SetMode(ConsoleControl, NewMode);
}
}
//
// Drawing to the screen
//
VOID egClearScreen(IN EG_PIXEL *Color)
{
EFI_UGA_PIXEL FillColor;
if (UgaDraw != NULL) {
FillColor.Red = Color->r;
FillColor.Green = Color->g;
FillColor.Blue = Color->b;
FillColor.Reserved = 0;
UgaDraw->Blt(UgaDraw, &FillColor, EfiUgaVideoFill,
0, 0, 0, 0, egScreenWidth, egScreenHeight, 0);
}
}
VOID egDrawImage(IN EG_IMAGE *Image, IN UINTN ScreenPosX, IN UINTN ScreenPosY)
{
if (UgaDraw != NULL) {
if (Image->HasAlpha) {
Image->HasAlpha = FALSE;
egSetPlane(PLPTR(Image, a), 0, Image->Width * Image->Height);
}
UgaDraw->Blt(UgaDraw, (EFI_UGA_PIXEL *)Image->PixelData, EfiUgaBltBufferToVideo,
0, 0, ScreenPosX, ScreenPosY, Image->Width, Image->Height, 0);
}
}
VOID egDrawImageArea(IN EG_IMAGE *Image,
IN UINTN AreaPosX, IN UINTN AreaPosY,
IN UINTN AreaWidth, IN UINTN AreaHeight,
IN UINTN ScreenPosX, IN UINTN ScreenPosY)
{
egRestrictImageArea(Image, AreaPosX, AreaPosY, &AreaWidth, &AreaHeight);
if (AreaWidth == 0)
return;
if (UgaDraw != NULL) {
if (Image->HasAlpha) {
Image->HasAlpha = FALSE;
egSetPlane(PLPTR(Image, a), 0, Image->Width * Image->Height);
}
UgaDraw->Blt(UgaDraw, (EFI_UGA_PIXEL *)Image->PixelData, EfiUgaBltBufferToVideo,
AreaPosX, AreaPosY, ScreenPosX, ScreenPosY, AreaWidth, AreaHeight, Image->Width * 4);
}
}
//
// Make a screenshot
//
VOID egScreenShot(VOID)
{
EFI_STATUS Status;
EG_IMAGE *Image;
UINT8 *FileData;
UINTN FileDataLength;
UINTN Index;
if (UgaDraw == NULL)
return;
// allocate a buffer for the whole screen
Image = egCreateImage(egScreenWidth, egScreenHeight, FALSE);
if (Image == NULL) {
Print(L"Error egCreateImage returned NULL\n");
goto bailout_wait;
}
// get full screen image
UgaDraw->Blt(UgaDraw, (EFI_UGA_PIXEL *)Image->PixelData, EfiUgaVideoToBltBuffer,
0, 0, 0, 0, Image->Width, Image->Height, 0);
// encode as BMP
egEncodeBMP(Image, &FileData, &FileDataLength);
egFreeImage(Image);
if (FileData == NULL) {
Print(L"Error egEncodeBMP returned NULL\n");
goto bailout_wait;
}
// save to file on the ESP
Status = egSaveFile(NULL, L"screenshot.bmp", FileData, FileDataLength);
FreePool(FileData);
if (EFI_ERROR(Status)) {
Print(L"Error egSaveFile: %x\n", Status);
goto bailout_wait;
}
return;
// DEBUG: switch to text mode
bailout_wait:
egSetGraphicsModeEnabled(FALSE);
BS->WaitForEvent(1, &ST->ConIn->WaitForKey, &Index);
}
/* EOF */
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