diff options
Diffstat (limited to 'EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaScreen.c')
| -rw-r--r-- | EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaScreen.c | 992 |
1 files changed, 992 insertions, 0 deletions
diff --git a/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaScreen.c b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaScreen.c new file mode 100644 index 0000000000..ed35a01c32 --- /dev/null +++ b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaScreen.c @@ -0,0 +1,992 @@ +/*++
+
+Copyright (c) 2006, Intel Corporation
+All rights reserved. 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.
+
+Module Name:
+
+ WinNtUgaScreen.c
+
+Abstract:
+
+ This file produces the graphics abstration of UGA. It is called by
+ WinNtUgaDriver.c file which deals with the EFI 1.1 driver model.
+ This file just does graphics.
+
+--*/
+
+#include "WinNtUga.h"
+
+EFI_WIN_NT_THUNK_PROTOCOL *mWinNt;
+DWORD mTlsIndex = TLS_OUT_OF_INDEXES;
+DWORD mTlsIndexUseCount = 0; // lets us know when we can free mTlsIndex.
+static EFI_EVENT mUgaScreenExitBootServicesEvent;
+
+EFI_STATUS
+WinNtUgaStartWindow (
+ IN UGA_PRIVATE_DATA *Private,
+ IN UINT32 HorizontalResolution,
+ IN UINT32 VerticalResolution,
+ IN UINT32 ColorDepth,
+ IN UINT32 RefreshRate
+ );
+
+STATIC
+VOID
+EFIAPI
+KillNtUgaThread (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ );
+
+//
+// UGA Protocol Member Functions
+//
+
+EFI_STATUS
+EFIAPI
+WinNtUgaGetMode (
+ EFI_UGA_DRAW_PROTOCOL *This,
+ UINT32 *HorizontalResolution,
+ UINT32 *VerticalResolution,
+ UINT32 *ColorDepth,
+ UINT32 *RefreshRate
+ )
+/*++
+
+ Routine Description:
+ Return the current video mode information.
+
+ Arguments:
+ This - Protocol instance pointer.
+ HorizontalResolution - Current video horizontal resolution in pixels
+ VerticalResolution - Current video Vertical resolution in pixels
+ ColorDepth - Current video color depth in bits per pixel
+ RefreshRate - Current video refresh rate in Hz.
+
+ Returns:
+ EFI_SUCCESS - Mode information returned.
+ EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
+ EFI_INVALID_PARAMETER - One of the input args was NULL.
+
+--*/
+// TODO: ADD IN/OUT description here
+{
+ UGA_PRIVATE_DATA *Private;
+
+ Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Private->HardwareNeedsStarting) {
+ return EFI_NOT_STARTED;
+ }
+
+ if ((HorizontalResolution == NULL) ||
+ (VerticalResolution == NULL) ||
+ (ColorDepth == NULL) ||
+ (RefreshRate == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *HorizontalResolution = Private->HorizontalResolution;
+ *VerticalResolution = Private->VerticalResolution;
+ *ColorDepth = Private->ColorDepth;
+ *RefreshRate = Private->RefreshRate;
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+WinNtUgaSetMode (
+ EFI_UGA_DRAW_PROTOCOL *This,
+ UINT32 HorizontalResolution,
+ UINT32 VerticalResolution,
+ UINT32 ColorDepth,
+ UINT32 RefreshRate
+ )
+/*++
+
+ Routine Description:
+ Return the current video mode information.
+
+ Arguments:
+ This - Protocol instance pointer.
+ HorizontalResolution - Current video horizontal resolution in pixels
+ VerticalResolution - Current video Vertical resolution in pixels
+ ColorDepth - Current video color depth in bits per pixel
+ RefreshRate - Current video refresh rate in Hz.
+
+ Returns:
+ EFI_SUCCESS - Mode information returned.
+ EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
+ EFI_INVALID_PARAMETER - One of the input args was NULL.
+
+--*/
+// TODO: EFI_DEVICE_ERROR - add return value to function comment
+// TODO: EFI_DEVICE_ERROR - add return value to function comment
+// TODO: ADD IN/OUT description here
+{
+ EFI_STATUS Status;
+ UGA_PRIVATE_DATA *Private;
+ EFI_UGA_PIXEL Fill;
+ EFI_UGA_PIXEL *NewFillLine;
+ RECT Rect;
+ UINTN Size;
+ UINTN Width;
+ UINTN Height;
+
+ Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Private->HardwareNeedsStarting) {
+ Status = WinNtUgaStartWindow (
+ Private,
+ HorizontalResolution,
+ VerticalResolution,
+ ColorDepth,
+ RefreshRate
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ Private->HardwareNeedsStarting = FALSE;
+ } else {
+ //
+ // Change the resolution and resize of the window
+ //
+
+ //
+ // Free the old buffer. We do not save the content of the old buffer since the
+ // screen is to be cleared anyway. Clearing the screen is required by the EFI spec.
+ // See EFI spec chepter 10.5-EFI_UGA_DRAW_PROTOCOL.SetMode()
+ //
+ Private->WinNtThunk->HeapFree (Private->WinNtThunk->GetProcessHeap (), 0, Private->VirtualScreenInfo);
+
+ //
+ // Allocate DIB frame buffer directly from NT for performance enhancement
+ // This buffer is the virtual screen/frame buffer. This buffer is not the
+ // same a a frame buffer. The first row of this buffer will be the bottom
+ // line of the image. This is an artifact of the way we draw to the screen.
+ //
+ Size = HorizontalResolution * VerticalResolution * sizeof (RGBQUAD) + sizeof (BITMAPV4HEADER);
+ Private->VirtualScreenInfo = Private->WinNtThunk->HeapAlloc (
+ Private->WinNtThunk->GetProcessHeap (),
+ HEAP_ZERO_MEMORY,
+ Size
+ );
+
+ //
+ // Update the virtual screen info data structure
+ //
+ Private->VirtualScreenInfo->bV4Size = sizeof (BITMAPV4HEADER);
+ Private->VirtualScreenInfo->bV4Width = HorizontalResolution;
+ Private->VirtualScreenInfo->bV4Height = VerticalResolution;
+ Private->VirtualScreenInfo->bV4Planes = 1;
+ Private->VirtualScreenInfo->bV4BitCount = 32;
+ //
+ // uncompressed
+ //
+ Private->VirtualScreenInfo->bV4V4Compression = BI_RGB;
+
+ //
+ // The rest of the allocated memory block is the virtual screen buffer
+ //
+ Private->VirtualScreen = (RGBQUAD *) (Private->VirtualScreenInfo + 1);
+
+ //
+ // Use the AdjuctWindowRect fuction to calculate the real width and height
+ // of the new window including the border and caption
+ //
+ Rect.left = 0;
+ Rect.top = 0;
+ Rect.right = HorizontalResolution;
+ Rect.bottom = VerticalResolution;
+
+ Private->WinNtThunk->AdjustWindowRect (&Rect, WS_OVERLAPPEDWINDOW, 0);
+
+ Width = Rect.right - Rect.left;
+ Height = Rect.bottom - Rect.top;
+
+ //
+ // Retrieve the original window position information
+ //
+ Private->WinNtThunk->GetWindowRect (Private->WindowHandle, &Rect);
+
+ //
+ // Adjust the window size
+ //
+ Private->WinNtThunk->MoveWindow (Private->WindowHandle, Rect.left, Rect.top, Width, Height, TRUE);
+
+ }
+
+ Status = gBS->AllocatePool (
+ EfiBootServicesData,
+ sizeof (EFI_UGA_PIXEL) * HorizontalResolution,
+ &NewFillLine
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ if (Private->FillLine != NULL) {
+ gBS->FreePool (Private->FillLine);
+ }
+
+ Private->FillLine = NewFillLine;
+
+ Private->HorizontalResolution = HorizontalResolution;
+ Private->VerticalResolution = VerticalResolution;
+ Private->ColorDepth = ColorDepth;
+ Private->RefreshRate = RefreshRate;
+
+ Fill.Red = 0x00;
+ Fill.Green = 0x00;
+ Fill.Blue = 0x00;
+ This->Blt (
+ This,
+ &Fill,
+ EfiUgaVideoFill,
+ 0,
+ 0,
+ 0,
+ 0,
+ HorizontalResolution,
+ VerticalResolution,
+ HorizontalResolution * sizeof (EFI_UGA_PIXEL)
+ );
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+WinNtUgaBlt (
+ IN EFI_UGA_DRAW_PROTOCOL *This,
+ IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL
+ IN EFI_UGA_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
+ )
+/*++
+
+ Routine Description:
+ Blt pixels from the rectangle (Width X Height) formed by the BltBuffer
+ onto the graphics screen starting a location (X, Y). (0, 0) is defined as
+ the upper left hand side of the screen. (X, Y) can be outside of the
+ current screen geometry and the BltBuffer will be cliped when it is
+ displayed. X and Y can be negative or positive. If Width or Height is
+ bigger than the current video screen the image will be clipped.
+
+ Arguments:
+ This - Protocol instance pointer.
+ X - X location on graphics screen.
+ Y - Y location on the graphics screen.
+ Width - Width of BltBuffer.
+ Height - Hight of BltBuffer
+ BltOperation - Operation to perform on BltBuffer and video memory
+ BltBuffer - Buffer containing data to blt into video buffer. This
+ buffer has a size of Width*Height*sizeof(EFI_UGA_PIXEL)
+ SourceX - If the BltOperation is a EfiCopyBlt this is the source
+ of the copy. For other BLT operations this argument is not
+ used.
+ SourceX - If the BltOperation is a EfiCopyBlt this is the source
+ of the copy. For other BLT operations this argument is not
+ used.
+
+ Returns:
+ EFI_SUCCESS - The palette is updated with PaletteArray.
+ EFI_INVALID_PARAMETER - BltOperation is not valid.
+ EFI_DEVICE_ERROR - A hardware error occured writting to the video
+ buffer.
+
+--*/
+// TODO: SourceY - add argument and description to function comment
+// TODO: DestinationX - add argument and description to function comment
+// TODO: DestinationY - add argument and description to function comment
+// TODO: Delta - add argument and description to function comment
+{
+ UGA_PRIVATE_DATA *Private;
+ EFI_TPL OriginalTPL;
+ UINTN DstY;
+ UINTN SrcY;
+ RGBQUAD *VScreen;
+ RGBQUAD *VScreenSrc;
+ EFI_UGA_PIXEL *Blt;
+ UINTN Index;
+ RECT Rect;
+ EFI_UGA_PIXEL *FillPixel;
+
+ Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
+
+ if ((BltOperation < 0) || (BltOperation >= EfiUgaBltMax)) {
+ 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_UGA_PIXEL);
+ }
+
+ //
+ // We need to fill the Virtual Screen buffer with the blt data.
+ // The virtual screen is upside down, as the first row is the bootom row of
+ // the image.
+ //
+
+ if (BltOperation == EfiUgaVideoToBltBuffer) {
+
+ //
+ // Video to BltBuffer: Source is Video, destination is BltBuffer
+ //
+ if (SourceY + Height > Private->VerticalResolution) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (SourceX + Width > Private->HorizontalResolution) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // We have to raise to TPL Notify, so we make an atomic write the frame buffer.
+ // We would not want a timer based event (Cursor, ...) to come in while we are
+ // doing this operation.
+ //
+ OriginalTPL = gBS->RaiseTPL (EFI_TPL_NOTIFY);
+
+ for (SrcY = SourceY, DstY = DestinationY; DstY < (Height + DestinationY); SrcY++, DstY++) {
+ Blt = (EFI_UGA_PIXEL *) ((UINT8 *) BltBuffer + (DstY * Delta) + DestinationX * sizeof (EFI_UGA_PIXEL));
+ VScreen = &Private->VirtualScreen[(Private->VerticalResolution - SrcY - 1) * Private->HorizontalResolution + SourceX];
+ CopyMem (Blt, VScreen, sizeof (EFI_UGA_PIXEL) * Width);
+ }
+ } else {
+ //
+ // BltBuffer to Video: Source is BltBuffer, destination is Video
+ //
+ if (DestinationY + Height > Private->VerticalResolution) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (DestinationX + Width > Private->HorizontalResolution) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // We have to raise to TPL Notify, so we make an atomic write the frame buffer.
+ // We would not want a timer based event (Cursor, ...) to come in while we are
+ // doing this operation.
+ //
+ OriginalTPL = gBS->RaiseTPL (EFI_TPL_NOTIFY);
+
+ if (BltOperation == EfiUgaVideoFill) {
+ FillPixel = BltBuffer;
+ for (Index = 0; Index < Width; Index++) {
+ Private->FillLine[Index] = *FillPixel;
+ }
+ }
+
+ for (Index = 0; Index < Height; Index++) {
+ if (DestinationY <= SourceY) {
+ SrcY = SourceY + Index;
+ DstY = DestinationY + Index;
+ } else {
+ SrcY = SourceY + Height - Index - 1;
+ DstY = DestinationY + Height - Index - 1;
+ }
+
+ VScreen = &Private->VirtualScreen[(Private->VerticalResolution - DstY - 1) * Private->HorizontalResolution + DestinationX];
+ switch (BltOperation) {
+ case EfiUgaBltBufferToVideo:
+ Blt = (EFI_UGA_PIXEL *) ((UINT8 *) BltBuffer + (SrcY * Delta) + SourceX * sizeof (EFI_UGA_PIXEL));
+ CopyMem (VScreen, Blt, Width * sizeof (EFI_UGA_PIXEL));
+ break;
+
+ case EfiUgaVideoToVideo:
+ VScreenSrc = &Private->VirtualScreen[(Private->VerticalResolution - SrcY - 1) * Private->HorizontalResolution + SourceX];
+ CopyMem (VScreen, VScreenSrc, Width * sizeof (EFI_UGA_PIXEL));
+ break;
+
+ case EfiUgaVideoFill:
+ CopyMem (VScreen, Private->FillLine, Width * sizeof (EFI_UGA_PIXEL));
+ break;
+ }
+ }
+ }
+
+ if (BltOperation != EfiUgaVideoToBltBuffer) {
+ //
+ // Mark the area we just blted as Invalid so WM_PAINT will update.
+ //
+ Rect.left = DestinationX;
+ Rect.top = DestinationY;
+ Rect.right = DestinationX + Width;
+ Rect.bottom = DestinationY + Height;
+ Private->WinNtThunk->InvalidateRect (Private->WindowHandle, &Rect, FALSE);
+
+ //
+ // Send the WM_PAINT message to the thread that is drawing the window. We
+ // are in the main thread and the window drawing is in a child thread.
+ // There is a child thread per window. We have no CriticalSection or Mutex
+ // since we write the data and the other thread displays the data. While
+ // we may miss some data for a short period of time this is no different than
+ // a write combining on writes to a frame buffer.
+ //
+
+ Private->WinNtThunk->UpdateWindow (Private->WindowHandle);
+ }
+
+ gBS->RestoreTPL (OriginalTPL);
+
+ return EFI_SUCCESS;
+}
+
+
+//
+// Construction and Destruction functions
+//
+
+EFI_STATUS
+WinNtUgaSupported (
+ IN EFI_WIN_NT_IO_PROTOCOL *WinNtIo
+ )
+/*++
+
+Routine Description:
+
+Arguments:
+
+Returns:
+
+ None
+
+--*/
+// TODO: WinNtIo - add argument and description to function comment
+// TODO: EFI_UNSUPPORTED - add return value to function comment
+// TODO: EFI_SUCCESS - add return value to function comment
+{
+ //
+ // Check to see if the IO abstraction represents a device type we support.
+ //
+ // This would be replaced a check of PCI subsystem ID, etc.
+ //
+ if (!CompareGuid (WinNtIo->TypeGuid, &gEfiWinNtUgaGuid)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ return EFI_SUCCESS;
+}
+
+LRESULT
+CALLBACK
+WinNtUgaThreadWindowProc (
+ IN HWND hwnd,
+ IN UINT iMsg,
+ IN WPARAM wParam,
+ IN LPARAM lParam
+ )
+/*++
+
+Routine Description:
+ Win32 Windows event handler.
+
+Arguments:
+ See Win32 Book
+
+Returns:
+ See Win32 Book
+
+--*/
+// TODO: hwnd - add argument and description to function comment
+// TODO: iMsg - add argument and description to function comment
+// TODO: wParam - add argument and description to function comment
+// TODO: lParam - add argument and description to function comment
+{
+ UGA_PRIVATE_DATA *Private;
+ UINTN Size;
+ HDC Handle;
+ PAINTSTRUCT PaintStruct;
+ LPARAM Index;
+ EFI_INPUT_KEY Key;
+
+ //
+ // BugBug - if there are two instances of this DLL in memory (such as is
+ // the case for ERM), the correct instance of this function may not be called.
+ // This also means that the address of the mTlsIndex value will be wrong, and
+ // the value may be wrong too.
+ //
+
+
+ //
+ // Use mTlsIndex global to get a Thread Local Storage version of Private.
+ // This works since each Uga protocol has a unique Private data instance and
+ // a unique thread.
+ //
+ Private = mWinNt->TlsGetValue (mTlsIndex);
+ ASSERT (NULL != Private);
+
+ switch (iMsg) {
+ case WM_CREATE:
+ Size = Private->HorizontalResolution * Private->VerticalResolution * sizeof (RGBQUAD);
+
+ //
+ // Allocate DIB frame buffer directly from NT for performance enhancement
+ // This buffer is the virtual screen/frame buffer. This buffer is not the
+ // same a a frame buffer. The first fow of this buffer will be the bottom
+ // line of the image. This is an artifact of the way we draw to the screen.
+ //
+ Private->VirtualScreenInfo = Private->WinNtThunk->HeapAlloc (
+ Private->WinNtThunk->GetProcessHeap (),
+ HEAP_ZERO_MEMORY,
+ Size
+ );
+
+ Private->VirtualScreenInfo->bV4Size = sizeof (BITMAPV4HEADER);
+ Private->VirtualScreenInfo->bV4Width = Private->HorizontalResolution;
+ Private->VirtualScreenInfo->bV4Height = Private->VerticalResolution;
+ Private->VirtualScreenInfo->bV4Planes = 1;
+ Private->VirtualScreenInfo->bV4BitCount = 32;
+ //
+ // uncompressed
+ //
+ Private->VirtualScreenInfo->bV4V4Compression = BI_RGB;
+ Private->VirtualScreen = (RGBQUAD *) (Private->VirtualScreenInfo + 1);
+ return 0;
+
+ case WM_PAINT:
+ //
+ // I have not found a way to convert hwnd into a Private context. So for
+ // now we use this API to convert hwnd to Private data.
+ //
+
+ Handle = mWinNt->BeginPaint (hwnd, &PaintStruct);
+
+ mWinNt->SetDIBitsToDevice (
+ Handle, // Destination Device Context
+ 0, // Destination X - 0
+ 0, // Destination Y - 0
+ Private->HorizontalResolution, // Width
+ Private->VerticalResolution, // Height
+ 0, // Source X
+ 0, // Source Y
+ 0, // DIB Start Scan Line
+ Private->VerticalResolution, // Number of scan lines
+ Private->VirtualScreen, // Address of array of DIB bits
+ (BITMAPINFO *) Private->VirtualScreenInfo, // Address of structure with bitmap info
+ DIB_RGB_COLORS // RGB or palette indexes
+ );
+
+ mWinNt->EndPaint (hwnd, &PaintStruct);
+ return 0;
+
+ //
+ // F10 and the ALT key do not create a WM_KEYDOWN message, thus this special case
+ //
+ case WM_SYSKEYDOWN:
+ Key.ScanCode = 0;
+ switch (wParam) {
+ case VK_F10:
+ Key.ScanCode = SCAN_F10;
+ Key.UnicodeChar = 0;
+ UgaPrivateAddQ (Private, Key);
+ return 0;
+ }
+ break;
+
+ case WM_KEYDOWN:
+ Key.ScanCode = 0;
+ switch (wParam) {
+ case VK_HOME: Key.ScanCode = SCAN_HOME; break;
+ case VK_END: Key.ScanCode = SCAN_END; break;
+ case VK_LEFT: Key.ScanCode = SCAN_LEFT; break;
+ case VK_RIGHT: Key.ScanCode = SCAN_RIGHT; break;
+ case VK_UP: Key.ScanCode = SCAN_UP; break;
+ case VK_DOWN: Key.ScanCode = SCAN_DOWN; break;
+ case VK_DELETE: Key.ScanCode = SCAN_DELETE; break;
+ case VK_INSERT: Key.ScanCode = SCAN_INSERT; break;
+ case VK_PRIOR: Key.ScanCode = SCAN_PAGE_UP; break;
+ case VK_NEXT: Key.ScanCode = SCAN_PAGE_DOWN; break;
+ case VK_ESCAPE: Key.ScanCode = SCAN_ESC; break;
+
+ case VK_F1: Key.ScanCode = SCAN_F1; break;
+ case VK_F2: Key.ScanCode = SCAN_F2; break;
+ case VK_F3: Key.ScanCode = SCAN_F3; break;
+ case VK_F4: Key.ScanCode = SCAN_F4; break;
+ case VK_F5: Key.ScanCode = SCAN_F5; break;
+ case VK_F6: Key.ScanCode = SCAN_F6; break;
+ case VK_F7: Key.ScanCode = SCAN_F7; break;
+ case VK_F8: Key.ScanCode = SCAN_F8; break;
+ case VK_F9: Key.ScanCode = SCAN_F9; break;
+ }
+
+ if (Key.ScanCode != 0) {
+ Key.UnicodeChar = 0;
+ UgaPrivateAddQ (Private, Key);
+ }
+
+ return 0;
+
+ case WM_CHAR:
+ //
+ // The ESC key also generate WM_CHAR.
+ //
+ if (wParam == 0x1B) {
+ return 0;
+ }
+
+ for (Index = 0; Index < (lParam & 0xffff); Index++) {
+ if (wParam != 0) {
+ Key.UnicodeChar = (CHAR16) wParam;
+ Key.ScanCode = 0;
+ UgaPrivateAddQ (Private, Key);
+ }
+ }
+
+ return 0;
+
+ case WM_CLOSE:
+ //
+ // This close message is issued by user, core is not aware of this,
+ // so don't release the window display resource, just hide the window.
+ //
+ Private->WinNtThunk->ShowWindow (Private->WindowHandle, SW_HIDE);
+ return 0;
+
+ case WM_DESTROY:
+ mWinNt->DestroyWindow (hwnd);
+ mWinNt->PostQuitMessage (0);
+
+ mWinNt->HeapFree (Private->WinNtThunk->GetProcessHeap (), 0, Private->VirtualScreenInfo);
+
+ mWinNt->ExitThread (0);
+ return 0;
+
+ default:
+ break;
+ };
+
+ return mWinNt->DefWindowProc (hwnd, iMsg, wParam, lParam);
+}
+
+DWORD
+WINAPI
+WinNtUgaThreadWinMain (
+ LPVOID lpParameter
+ )
+/*++
+
+Routine Description:
+
+ This thread simulates the end of WinMain () aplication. Each Winow nededs
+ to process it's events. The messages are dispatched to
+ WinNtUgaThreadWindowProc ().
+
+ Be very careful sine WinNtUgaThreadWinMain () and WinNtUgaThreadWindowProc ()
+ are running in a seperate thread. We have to do this to process the events.
+
+Arguments:
+
+ lpParameter - Handle of window to manage.
+
+Returns:
+
+ if a WM_QUIT message is returned exit.
+
+--*/
+{
+ MSG Message;
+ UGA_PRIVATE_DATA *Private;
+ ATOM Atom;
+ RECT Rect;
+
+ Private = (UGA_PRIVATE_DATA *) lpParameter;
+ ASSERT (NULL != Private);
+
+ //
+ // Since each thread has unique private data, save the private data in Thread
+ // Local Storage slot. Then the shared global mTlsIndex can be used to get
+ // thread specific context.
+ //
+ Private->WinNtThunk->TlsSetValue (mTlsIndex, Private);
+
+ Private->ThreadId = Private->WinNtThunk->GetCurrentThreadId ();
+
+ Private->WindowsClass.cbSize = sizeof (WNDCLASSEX);
+ Private->WindowsClass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
+ Private->WindowsClass.lpfnWndProc = WinNtUgaThreadWindowProc;
+ Private->WindowsClass.cbClsExtra = 0;
+ Private->WindowsClass.cbWndExtra = 0;
+ Private->WindowsClass.hInstance = NULL;
+ Private->WindowsClass.hIcon = Private->WinNtThunk->LoadIcon (NULL, IDI_APPLICATION);
+ Private->WindowsClass.hCursor = Private->WinNtThunk->LoadCursor (NULL, IDC_ARROW);
+ Private->WindowsClass.hbrBackground = (HBRUSH) COLOR_WINDOW;
+ Private->WindowsClass.lpszMenuName = NULL;
+ Private->WindowsClass.lpszClassName = WIN_NT_UGA_CLASS_NAME;
+ Private->WindowsClass.hIconSm = Private->WinNtThunk->LoadIcon (NULL, IDI_APPLICATION);
+
+ //
+ // This call will fail after the first time, but thats O.K. since we only need
+ // WIN_NT_UGA_CLASS_NAME to exist to create the window.
+ //
+ // Note: Multiple instances of this DLL will use the same instance of this
+ // Class, including the callback function, unless the Class is unregistered and
+ // successfully registered again.
+ //
+ Atom = Private->WinNtThunk->RegisterClassEx (&Private->WindowsClass);
+
+ //
+ // Setting Rect values to allow for the AdjustWindowRect to provide
+ // us the correct sizes for the client area when doing the CreateWindowEx
+ //
+ Rect.top = 0;
+ Rect.bottom = Private->VerticalResolution;
+ Rect.left = 0;
+ Rect.right = Private->HorizontalResolution;
+
+ Private->WinNtThunk->AdjustWindowRect (&Rect, WS_OVERLAPPEDWINDOW, 0);
+
+ Private->WindowHandle = Private->WinNtThunk->CreateWindowEx (
+ 0,
+ WIN_NT_UGA_CLASS_NAME,
+ Private->WindowName,
+ WS_OVERLAPPEDWINDOW,
+ CW_USEDEFAULT,
+ CW_USEDEFAULT,
+ Rect.right - Rect.left,
+ Rect.bottom - Rect.top,
+ NULL,
+ NULL,
+ NULL,
+ &Private
+ );
+
+ //
+ // The reset of this thread is the standard winows program. We need a sperate
+ // thread since we must process the message loop to make windows act like
+ // windows.
+ //
+
+ Private->WinNtThunk->ShowWindow (Private->WindowHandle, SW_SHOW);
+ Private->WinNtThunk->UpdateWindow (Private->WindowHandle);
+
+ //
+ // Let the main thread get some work done
+ //
+ Private->WinNtThunk->ReleaseSemaphore (Private->ThreadInited, 1, NULL);
+
+ //
+ // This is the message loop that all Windows programs need.
+ //
+ while (Private->WinNtThunk->GetMessage (&Message, Private->WindowHandle, 0, 0)) {
+ Private->WinNtThunk->TranslateMessage (&Message);
+ Private->WinNtThunk->DispatchMessage (&Message);
+ }
+
+ return Message.wParam;
+}
+
+EFI_STATUS
+WinNtUgaStartWindow (
+ IN UGA_PRIVATE_DATA *Private,
+ IN UINT32 HorizontalResolution,
+ IN UINT32 VerticalResolution,
+ IN UINT32 ColorDepth,
+ IN UINT32 RefreshRate
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+ HorizontalResolution - TODO: add argument description
+ VerticalResolution - TODO: add argument description
+ ColorDepth - TODO: add argument description
+ RefreshRate - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ EFI_STATUS Status;
+ DWORD NewThreadId;
+
+
+ mWinNt = Private->WinNtThunk;
+
+ //
+ // Initialize a Thread Local Storge variable slot. We use TLS to get the
+ // correct Private data instance into the windows thread.
+ //
+ if (mTlsIndex == TLS_OUT_OF_INDEXES) {
+ ASSERT (0 == mTlsIndexUseCount);
+ mTlsIndex = Private->WinNtThunk->TlsAlloc ();
+ }
+
+ //
+ // always increase the use count!
+ //
+ mTlsIndexUseCount++;
+
+ Private->HorizontalResolution = HorizontalResolution;
+ Private->VerticalResolution = VerticalResolution;
+
+ //
+ // Register to be notified on exit boot services so we can destroy the window.
+ //
+ Status = gBS->CreateEvent (
+ EFI_EVENT_SIGNAL_EXIT_BOOT_SERVICES,
+ EFI_TPL_CALLBACK,
+ KillNtUgaThread,
+ Private,
+ &mUgaScreenExitBootServicesEvent
+ );
+
+ Private->ThreadInited = Private->WinNtThunk->CreateSemaphore (NULL, 0, 1, NULL);
+ Private->ThreadHandle = Private->WinNtThunk->CreateThread (
+ NULL,
+ 0,
+ WinNtUgaThreadWinMain,
+ (VOID *) Private,
+ 0,
+ &NewThreadId
+ );
+
+ //
+ // The other thread has entered the windows message loop so we can
+ // continue our initialization.
+ //
+ Private->WinNtThunk->WaitForSingleObject (Private->ThreadInited, INFINITE);
+ Private->WinNtThunk->CloseHandle (Private->ThreadInited);
+
+ return Status;
+}
+
+EFI_STATUS
+WinNtUgaConstructor (
+ UGA_PRIVATE_DATA *Private
+ )
+/*++
+
+Routine Description:
+
+Arguments:
+
+Returns:
+
+ None
+
+--*/
+// TODO: Private - add argument and description to function comment
+// TODO: EFI_SUCCESS - add return value to function comment
+{
+
+ Private->UgaDraw.GetMode = WinNtUgaGetMode;
+ Private->UgaDraw.SetMode = WinNtUgaSetMode;
+ Private->UgaDraw.Blt = WinNtUgaBlt;
+
+ Private->HardwareNeedsStarting = TRUE;
+ Private->FillLine = NULL;
+
+ WinNtUgaInitializeSimpleTextInForWindow (Private);
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+WinNtUgaDestructor (
+ UGA_PRIVATE_DATA *Private
+ )
+/*++
+
+Routine Description:
+
+Arguments:
+
+Returns:
+
+ None
+
+--*/
+// TODO: Private - add argument and description to function comment
+// TODO: EFI_SUCCESS - add return value to function comment
+{
+ UINT32 UnregisterReturn;
+
+ if (!Private->HardwareNeedsStarting) {
+ //
+ // BugBug: Shutdown Uga Hardware and any child devices.
+ //
+ Private->WinNtThunk->SendMessage (Private->WindowHandle, WM_DESTROY, 0, 0);
+ Private->WinNtThunk->CloseHandle (Private->ThreadHandle);
+
+ mTlsIndexUseCount--;
+
+ //
+ // The callback function for another window could still be called,
+ // so we need to make sure there are no more users of mTlsIndex.
+ //
+ if (0 == mTlsIndexUseCount) {
+ ASSERT (TLS_OUT_OF_INDEXES != mTlsIndex);
+
+ Private->WinNtThunk->TlsFree (mTlsIndex);
+ mTlsIndex = TLS_OUT_OF_INDEXES;
+
+ UnregisterReturn = Private->WinNtThunk->UnregisterClass (
+ Private->WindowsClass.lpszClassName,
+ Private->WindowsClass.hInstance
+ );
+ }
+
+ WinNtUgaDestroySimpleTextInForWindow (Private);
+ }
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+VOID
+EFIAPI
+KillNtUgaThread (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+/*++
+
+Routine Description:
+
+ This is the UGA screen's callback notification function for exit-boot-services.
+ All we do here is call WinNtUgaDestructor().
+
+Arguments:
+
+ Event - not used
+ Context - pointer to the Private structure.
+
+Returns:
+
+ None.
+
+--*/
+{
+ EFI_STATUS Status;
+ Status = WinNtUgaDestructor (Context);
+}
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