<commit_before>/*++ @file

Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2010 - 2011, Apple Inc. 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:

    EmuGopScreen.c

Abstract:

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

**/

#include "Gop.h"


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 }
    };


/**
  Returns information for an available graphics mode that the graphics device
  and the set of active video output devices supports.

  @param  This                  The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
  @param  ModeNumber            The mode number to return information on.
  @param  SizeOfInfo            A pointer to the size, in bytes, of the Info buffer.
  @param  Info                  A pointer to callee allocated buffer that returns information about ModeNumber.

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

**/
EFI_STATUS
EFIAPI
EmuGopQuerytMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL          *This,
  IN  UINT32                                ModeNumber,
  OUT UINTN                                 *SizeOfInfo,
  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  **Info
  )
{
  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;
  }

  *Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
  if (*Info == NULL) {
    return EFI_OUT_OF_RESOURCES;
  }

  *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);

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

  return EFI_SUCCESS;
}



/**
  Set the video device into the specified mode and clears the visible portions of
  the output display to black.

  @param  This              The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
  @param  ModeNumber        Abstraction that defines the current video mode.

  @retval EFI_SUCCESS       The graphics mode specified by ModeNumber was selected.
  @retval EFI_DEVICE_ERROR  The device had an error and could not complete the request.
  @retval EFI_UNSUPPORTED   ModeNumber is not supported by this device.

**/
EFI_STATUS
EFIAPI
EmuGopSetMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL  *This,
  IN  UINT32                        ModeNumber
  )
{
  EFI_STATUS                      Status;
  GOP_PRIVATE_DATA                *Private;
  GOP_MODE_DATA                   *ModeData;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL   Fill;

  Private = GOP_PRIVATE_DATA_FROM_THIS (This);

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

  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 = EmuGopStartWindow (
              Private,
              ModeData->HorizontalResolution,
              ModeData->VerticalResolution,
              ModeData->ColorDepth,
              ModeData->RefreshRate
              );
    if (EFI_ERROR (Status)) {
      return EFI_DEVICE_ERROR;
    }

    Private->HardwareNeedsStarting = FALSE;
  }


  Status = Private->EmuGraphicsWindow->Size(
                            Private->EmuGraphicsWindow,
                            ModeData->HorizontalResolution,
                            ModeData->VerticalResolution
                            );


  Fill.Red                      = 0x7f;
  Fill.Green                    = 0x7F;
  Fill.Blue                     = 0x7f;
  This->Blt (
          This,
          &Fill,
          EfiBltVideoFill,
          0,
          0,
          0,
          0,
          ModeData->HorizontalResolution,
          ModeData->VerticalResolution,
          ModeData->HorizontalResolution * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
          );
  return EFI_SUCCESS;
}



/**
  Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.
<commit_msg>EmulatorPkg/EmuGopDxe: Clear screen to black in GOP.SetMode<commit_after>/*++ @file

Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2010 - 2011, Apple Inc. 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:

    EmuGopScreen.c

Abstract:

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

**/

#include "Gop.h"


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 }
    };


/**
  Returns information for an available graphics mode that the graphics device
  and the set of active video output devices supports.

  @param  This                  The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
  @param  ModeNumber            The mode number to return information on.
  @param  SizeOfInfo            A pointer to the size, in bytes, of the Info buffer.
  @param  Info                  A pointer to callee allocated buffer that returns information about ModeNumber.

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

**/
EFI_STATUS
EFIAPI
EmuGopQuerytMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL          *This,
  IN  UINT32                                ModeNumber,
  OUT UINTN                                 *SizeOfInfo,
  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  **Info
  )
{
  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;
  }

  *Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
  if (*Info == NULL) {
    return EFI_OUT_OF_RESOURCES;
  }

  *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);

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

  return EFI_SUCCESS;
}



/**
  Set the video device into the specified mode and clears the visible portions of
  the output display to black.

  @param  This              The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
  @param  ModeNumber        Abstraction that defines the current video mode.

  @retval EFI_SUCCESS       The graphics mode specified by ModeNumber was selected.
  @retval EFI_DEVICE_ERROR  The device had an error and could not complete the request.
  @retval EFI_UNSUPPORTED   ModeNumber is not supported by this device.

**/
EFI_STATUS
EFIAPI
EmuGopSetMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL  *This,
  IN  UINT32                        ModeNumber
  )
{
  EFI_STATUS                      Status;
  GOP_PRIVATE_DATA                *Private;
  GOP_MODE_DATA                   *ModeData;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL   Fill;

  Private = GOP_PRIVATE_DATA_FROM_THIS (This);

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

  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 = EmuGopStartWindow (
              Private,
              ModeData->HorizontalResolution,
              ModeData->VerticalResolution,
              ModeData->ColorDepth,
              ModeData->RefreshRate
              );
    if (EFI_ERROR (Status)) {
      return EFI_DEVICE_ERROR;
    }

    Private->HardwareNeedsStarting = FALSE;
  }


  Status = Private->EmuGraphicsWindow->Size(
                            Private->EmuGraphicsWindow,
                            ModeData->HorizontalResolution,
                            ModeData->VerticalResolution
                            );


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



/**
  Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.

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