winntgopscreen.c

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/*++

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:
  
    WinNtGopScreen.c

Abstract:

  This file produces the graphics abstration of GOP. It is called by 
  WinNtGopDriver.c file which deals with the EFI 1.1 driver model. 
  This file just does graphics.

--*/

#include "WinNtGop.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          mGopScreenExitBootServicesEvent;
GOP_MODE_DATA mGopModeData[] = {
    {800, 600, 0, 0},
    {640, 480, 0, 0},
    {720, 400, 0, 0},
    {1024, 768, 0, 0},
    {1280, 1024, 0, 0}
    };

EFI_STATUS
WinNtGopStartWindow (
  IN  GOP_PRIVATE_DATA    *Private,
  IN  UINT32              HorizontalResolution,
  IN  UINT32              VerticalResolution,
  IN  UINT32              ColorDepth,
  IN  UINT32              RefreshRate
  );

STATIC
VOID
EFIAPI
KillNtGopThread (
  IN EFI_EVENT  Event,
  IN VOID       *Context
  );

//
// GOP Protocol Member Functions
//

EFI_STATUS
EFIAPI
WinNtGopQuerytMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL          *This,
  IN  UINT32                                ModeNumber,
  OUT UINTN                                 *SizeOfInfo,
  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  **Info
  )
/*++

Routine Description:

  Graphics Output protocol interface to get video mode

  Arguments:
    This                  - Protocol instance pointer.
    ModeNumber            - The mode number to return information on.
    Info                  - Caller allocated buffer that returns information about ModeNumber.
    SizeOfInfo            - A pointer to the size, in bytes, of the Info buffer.

  Returns:
    EFI_SUCCESS           - Mode information returned.
    EFI_BUFFER_TOO_SMALL  - The Info buffer was too small.
    EFI_DEVICE_ERROR      - A hardware error occurred trying to retrieve the video mode.
    EFI_NOT_STARTED       - Video display is not initialized. Call SetMode ()
    EFI_INVALID_PARAMETER - One of the input args was NULL.

--*/
{
  EFI_STATUS        Status;
  GOP_PRIVATE_DATA  *Private;

  Private = GOP_PRIVATE_DATA_FROM_THIS (This);

  if (Info == NULL || SizeOfInfo == NULL || (UINTN) ModeNumber >= This->Mode->MaxMode) {
    return EFI_INVALID_PARAMETER;
  }

  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION),
                  Info
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);

  (*Info)->Version = 0;
  (*Info)->HorizontalResolution = Private->ModeData[ModeNumber].HorizontalResolution;
  (*Info)->VerticalResolution   = Private->ModeData[ModeNumber].VerticalResolution;
  (*Info)->PixelFormat = PixelBlueGreenRedReserved8BitPerColor;
  (*Info)->PixelsPerScanLine = (*Info)->HorizontalResolution;

  return EFI_SUCCESS;
}

EFI_STATUS
EFIAPI
WinNtGopSetMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL * This,
  IN  UINT32                       ModeNumber
  )
/*++

Routine Description:

  Graphics Output protocol interface to set video mode

  Arguments:
    This             - Protocol instance pointer.
    ModeNumber       - The mode number to be set.

  Returns:
    EFI_SUCCESS      - Graphics mode was changed.
    EFI_DEVICE_ERROR - The device had an error and could not complete the request.
    EFI_UNSUPPORTED  - ModeNumber is not supported by this device.

--*/
{
  EFI_STATUS                    Status;
  GOP_PRIVATE_DATA              *Private;
  GOP_MODE_DATA *ModeData;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL Fill;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *NewFillLine;
  RECT                          Rect;
  UINTN                         Size;
  UINTN                         Width;
  UINTN                         Height;

  Private = GOP_PRIVATE_DATA_FROM_THIS (This);

  if (ModeNumber >= This->Mode->MaxMode) {
    return EFI_UNSUPPORTED;
  }

  if (ModeNumber == This->Mode->Mode) {
    return EFI_SUCCESS;
  }

  ModeData = &Private->ModeData[ModeNumber];
  This->Mode->Mode = ModeNumber;
  Private->GraphicsOutput.Mode->Info->HorizontalResolution = ModeData->HorizontalResolution;
  Private->GraphicsOutput.Mode->Info->VerticalResolution = ModeData->VerticalResolution;
  Private->GraphicsOutput.Mode->Info->PixelsPerScanLine = ModeData->HorizontalResolution;

  if (Private->HardwareNeedsStarting) {
    Status = WinNtGopStartWindow (
              Private,
              ModeData->HorizontalResolution,
              ModeData->VerticalResolution,
              ModeData->ColorDepth,
              ModeData->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 UEFI spec -EFI_GRAPHICS_OUTPUT_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 = ModeData->HorizontalResolution * ModeData->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          = ModeData->HorizontalResolution;
    Private->VirtualScreenInfo->bV4Height         = ModeData->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  = ModeData->HorizontalResolution;
    Rect.bottom = ModeData->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_GRAPHICS_OUTPUT_BLT_PIXEL) * ModeData->HorizontalResolution,
                  &NewFillLine
                  );
  if (EFI_ERROR (Status)) {
    return EFI_DEVICE_ERROR;
  }

  if (Private->FillLine != NULL) {
    gBS->FreePool (Private->FillLine);
  }

  Private->FillLine             = NewFillLine;

  Fill.Red                      = 0x00;
  Fill.Green                    = 0x00;
  Fill.Blue                     = 0x00;
  This->Blt (
          This,
          &Fill,
          EfiBltVideoFill,
          0,
          0,
          0,
          0,
          ModeData->HorizontalResolution,
          ModeData->VerticalResolution,
          ModeData->HorizontalResolution * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
          );
  return EFI_SUCCESS;
}

EFI_STATUS
EFIAPI
WinNtGopBlt (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL                   *This,
  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         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_GRAPHICS_OUTPUT_BLT_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
{
  GOP_PRIVATE_DATA              *Private;
  EFI_TPL                       OriginalTPL;
  UINTN                         DstY;
  UINTN                         SrcY;
  RGBQUAD                       *VScreen;
  RGBQUAD                       *VScreenSrc;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
  UINTN                         Index;
  RECT                          Rect;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *FillPixel;
  UINT32                        VerticalResolution;
  UINT32                        HorizontalResolution;

  Private = GOP_PRIVATE_DATA_FROM_THIS (This);

  if ((BltOperation < 0) || (BltOperation >= EfiGraphicsOutputBltOperationMax)) {
    return EFI_INVALID_PARAMETER;
  }