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C++ EFI_GRAPHICS_OUTPUT_PROTOCOL::SetMode方法代码示例

本文整理汇总了C++中EFI_GRAPHICS_OUTPUT_PROTOCOL::SetMode方法的典型用法代码示例。如果您正苦于以下问题：C++ EFI_GRAPHICS_OUTPUT_PROTOCOL::SetMode方法的具体用法？C++ EFI_GRAPHICS_OUTPUT_PROTOCOL::SetMode怎么用？C++ EFI_GRAPHICS_OUTPUT_PROTOCOL::SetMode使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类EFI_GRAPHICS_OUTPUT_PROTOCOL的用法示例。


在下文中一共展示了EFI_GRAPHICS_OUTPUT_PROTOCOL::SetMode方法的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: FreePool


//.........这里部分代码省略.........
    Status = GraphicsOutput->QueryMode (
                       GraphicsOutput,
                       ModeNumber,
                       &SizeOfInfo,
                       &Info
                       );
    if (!EFI_ERROR (Status)) {
      if ((Info->HorizontalResolution == NewHorizontalResolution) &&
          (Info->VerticalResolution == NewVerticalResolution)) {
        if ((GraphicsOutput->Mode->Info->HorizontalResolution == NewHorizontalResolution) &&
            (GraphicsOutput->Mode->Info->VerticalResolution == NewVerticalResolution)) {
          //
          // Current resolution is same with required resolution, check if text mode need be set
          //
          Status = SimpleTextOut->QueryMode (SimpleTextOut, SimpleTextOut->Mode->Mode, &CurrentColumn, &CurrentRow);
          ASSERT_EFI_ERROR (Status);
          if (CurrentColumn == NewColumns && CurrentRow == NewRows) {
            //
            // If current text mode is same with required text mode. Do nothing
            //
            FreePool (Info);
            return EFI_SUCCESS;
          } else {
            //
            // If current text mode is different from requried text mode.  Set new video mode
            //
            for (Index = 0; Index < MaxTextMode; Index++) {
              Status = SimpleTextOut->QueryMode (SimpleTextOut, Index, &CurrentColumn, &CurrentRow);
              if (!EFI_ERROR(Status)) {
                if ((CurrentColumn == NewColumns) && (CurrentRow == NewRows)) {
                  //
                  // Required text mode is supported, set it.
                  //
                  Status = SimpleTextOut->SetMode (SimpleTextOut, Index);
                  ASSERT_EFI_ERROR (Status);
                  //
                  // Update text mode PCD.
                  //
                  Status = PcdSet32S (PcdConOutColumn, mBmSetupTextModeColumn);
                  ASSERT_EFI_ERROR (Status);
                  Status = PcdSet32S (PcdConOutRow, mBmSetupTextModeRow);
                  ASSERT_EFI_ERROR (Status);
                  FreePool (Info);
                  return EFI_SUCCESS;
                }
              }
            }
            if (Index == MaxTextMode) {
              //
              // If requried text mode is not supported, return error.
              //
              FreePool (Info);
              return EFI_UNSUPPORTED;
            }
          }
        } else {
          //
          // If current video resolution is not same with the new one, set new video resolution.
          // In this case, the driver which produces simple text out need be restarted.
          //
          Status = GraphicsOutput->SetMode (GraphicsOutput, ModeNumber);
          if (!EFI_ERROR (Status)) {
            FreePool (Info);
            break;
          }
        }
开发者ID:wensunshine，项目名称:VisualUefi，代码行数:67，代码来源:BootManager.c

示例2: SetMode

/**
  Set the current video mode information.

  @param  This                 The EFI_UGA_DRAW_PROTOCOL instance.
  @param  HorizontalResolution The size of video screen in pixels in the X dimension.
  @param  VerticalResolution   The size of video screen in pixels in the Y dimension.
  @param  ColorDepth           Number of bits per pixel, currently defined to be 32.
  @param  RefreshRate          The refresh rate of the monitor in Hertz.

  @retval EFI_SUCCESS          Mode information returned.
  @retval EFI_NOT_STARTED      Video display is not initialized. Call SetMode ()
  @retval EFI_OUT_OF_RESOURCES Out of resources.

**/
EFI_STATUS
EFIAPI
ConSplitterUgaDrawSetMode (
  IN  EFI_UGA_DRAW_PROTOCOL           *This,
  IN UINT32                           HorizontalResolution,
  IN UINT32                           VerticalResolution,
  IN UINT32                           ColorDepth,
  IN UINT32                           RefreshRate
  )
{
  EFI_STATUS                             Status;
  TEXT_OUT_SPLITTER_PRIVATE_DATA         *Private;
  UINTN                                  Index;
  EFI_STATUS                             ReturnStatus;
  EFI_GRAPHICS_OUTPUT_PROTOCOL           *GraphicsOutput;
  UINTN                                  NumberIndex;
  UINTN                                  SizeOfInfo;
  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION   *Info;
  EFI_UGA_DRAW_PROTOCOL                  *UgaDraw;

  Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);

  ReturnStatus = EFI_SUCCESS;

  //
  // Update the Mode data
  //
  Private->UgaHorizontalResolution  = HorizontalResolution;
  Private->UgaVerticalResolution    = VerticalResolution;
  Private->UgaColorDepth            = ColorDepth;
  Private->UgaRefreshRate           = RefreshRate;

  //
  // return the worst status met
  //
  for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {

    GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
    if (GraphicsOutput != NULL) {
      //
      // Find corresponding ModeNumber of this GraphicsOutput instance
      //
      for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) {
        Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info);
        if (EFI_ERROR (Status)) {
          return Status;
        }
        if ((Info->HorizontalResolution == HorizontalResolution) && (Info->VerticalResolution == VerticalResolution)) {
          FreePool (Info);
          break;
        }
        FreePool (Info);
      }

      Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex);
      if (EFI_ERROR (Status)) {
        ReturnStatus = Status;
      }
    } else if (FeaturePcdGet (PcdUgaConsumeSupport)){
      UgaDraw = Private->TextOutList[Index].UgaDraw;
      if (UgaDraw != NULL) {
        Status = UgaDraw->SetMode (
                          UgaDraw,
                          HorizontalResolution,
                          VerticalResolution,
                          ColorDepth,
                          RefreshRate
                          );
        if (EFI_ERROR (Status)) {
          ReturnStatus = Status;
        }
      }
    }
  }

  return ReturnStatus;
}
开发者ID:AshleyDeSimone，项目名称:edk2，代码行数:91，代码来源:ConSplitterGraphics.c

示例3: FreePool

/**
  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.
  @retval EFI_OUT_OF_RESOURCES  No resource available.

**/
EFI_STATUS
EFIAPI
ConSplitterGraphicsOutputSetMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL * This,
  IN  UINT32                       ModeNumber
  )
{
  EFI_STATUS                             Status;
  TEXT_OUT_SPLITTER_PRIVATE_DATA         *Private;
  UINTN                                  Index;
  EFI_STATUS                             ReturnStatus;
  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION   *Mode;
  EFI_GRAPHICS_OUTPUT_PROTOCOL           *GraphicsOutput;
  UINTN                                  NumberIndex;
  UINTN                                  SizeOfInfo;
  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION   *Info;
  EFI_UGA_DRAW_PROTOCOL                  *UgaDraw;

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

  Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
  Mode = &Private->GraphicsOutputModeBuffer[ModeNumber];

  ReturnStatus = EFI_SUCCESS;
  //
  // return the worst status met
  //
  for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
    GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
    if (GraphicsOutput != NULL) {
      //
      // Find corresponding ModeNumber of this GraphicsOutput instance
      //
      for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) {
        Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info);
        if (EFI_ERROR (Status)) {
          return Status;
        }
        if ((Info->HorizontalResolution == Mode->HorizontalResolution) && (Info->VerticalResolution == Mode->VerticalResolution)) {
          FreePool (Info);
          break;
        }
        FreePool (Info);
      }

      Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex);
      if (EFI_ERROR (Status)) {
        ReturnStatus = Status;
      }
    } else if (FeaturePcdGet (PcdUgaConsumeSupport)) {
      UgaDraw = Private->TextOutList[Index].UgaDraw;
      if (UgaDraw != NULL) {
        Status = UgaDraw->SetMode (
                            UgaDraw,
                            Mode->HorizontalResolution,
                            Mode->VerticalResolution,
                            32,
                            60
                            );
        if (EFI_ERROR (Status)) {
          ReturnStatus = Status;
        }
      }
    }
  }

  This->Mode->Mode = ModeNumber;

  CopyMem (This->Mode->Info, &Private->GraphicsOutputModeBuffer[ModeNumber], This->Mode->SizeOfInfo);

  //
  // Information is not enough here, so the following items remain unchanged:
  //  GraphicsOutputMode->Info->Version, GraphicsOutputMode->Info->PixelFormat
  //  GraphicsOutputMode->SizeOfInfo, GraphicsOutputMode->FrameBufferBase, GraphicsOutputMode->FrameBufferSize
  // These items will be initialized/updated when a new GOP device is added into ConsoleSplitter.
  //

  return ReturnStatus;
}
开发者ID:AshleyDeSimone，项目名称:edk2，代码行数:94，代码来源:ConSplitterGraphics.c

示例4: sizeof

EFI_STATUS
QemuVideoGraphicsOutputConstructor (
  QEMU_VIDEO_PRIVATE_DATA  *Private
  )
{
  EFI_STATUS                   Status;
  EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;


  GraphicsOutput            = &Private->GraphicsOutput;
  GraphicsOutput->QueryMode = QemuVideoGraphicsOutputQueryMode;
  GraphicsOutput->SetMode   = QemuVideoGraphicsOutputSetMode;
  GraphicsOutput->Blt       = QemuVideoGraphicsOutputBlt;

  //
  // Initialize the private data
  //
  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE),
                  (VOID **) &Private->GraphicsOutput.Mode
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION),
                  (VOID **) &Private->GraphicsOutput.Mode->Info
                  );
  if (EFI_ERROR (Status)) {
    goto FreeMode;
  }
  Private->GraphicsOutput.Mode->MaxMode = (UINT32) Private->MaxMode;
  Private->GraphicsOutput.Mode->Mode    = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;
  Private->FrameBufferBltConfigure      = NULL;
  Private->FrameBufferBltConfigureSize  = 0;

  //
  // Initialize the hardware
  //
  Status = GraphicsOutput->SetMode (GraphicsOutput, 0);
  if (EFI_ERROR (Status)) {
    goto FreeInfo;
  }

  DrawLogo (
    Private,
    Private->ModeData[Private->GraphicsOutput.Mode->Mode].HorizontalResolution,
    Private->ModeData[Private->GraphicsOutput.Mode->Mode].VerticalResolution
    );

  return EFI_SUCCESS;

FreeInfo:
  FreePool (Private->GraphicsOutput.Mode->Info);

FreeMode:
  FreePool (Private->GraphicsOutput.Mode);
  Private->GraphicsOutput.Mode = NULL;

  return Status;
}
开发者ID:EvanLloyd，项目名称:tianocore，代码行数:64，代码来源:Gop.c

示例5: DEBUG

EFI_STATUS
VBoxVgaGraphicsOutputConstructor (
  VBOX_VGA_PRIVATE_DATA  *Private
  )
{
  EFI_STATUS                    Status;
  EFI_GRAPHICS_OUTPUT_PROTOCOL  *GraphicsOutput;
  UINT32                        Index;
  UINT32                        HorizontalResolution = 1024;
  UINT32                        VerticalResolution = 768;
  UINT32                        ColorDepth = 32;

  DEBUG((DEBUG_INFO, "%a:%d construct\n", __FILE__, __LINE__));

  GraphicsOutput            = &Private->GraphicsOutput;
  GraphicsOutput->QueryMode = VBoxVgaGraphicsOutputQueryMode;
  GraphicsOutput->SetMode   = VBoxVgaGraphicsOutputSetMode;
  GraphicsOutput->Blt       = VBoxVgaGraphicsOutputBlt;

  //
  // Initialize the private data
  //
  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE),
                  (VOID **) &Private->GraphicsOutput.Mode
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }
  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION),
                  (VOID **) &Private->GraphicsOutput.Mode->Info
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }
  Private->GraphicsOutput.Mode->MaxMode = (UINT32) Private->MaxMode;
  Private->GraphicsOutput.Mode->Mode    = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;
  Private->HardwareNeedsStarting        = TRUE;

  //
  // Initialize the hardware
  //
  VBoxVgaGetVmVariable(EFI_INFO_INDEX_HORIZONTAL_RESOLUTION, (CHAR8 *)&HorizontalResolution,
                       sizeof(HorizontalResolution));
  VBoxVgaGetVmVariable(EFI_INFO_INDEX_VERTICAL_RESOLUTION, (CHAR8 *)&VerticalResolution,
                       sizeof(VerticalResolution));
  for (Index = 0; Index < Private->MaxMode; Index++)
  {
    if (   HorizontalResolution == Private->ModeData[Index].HorizontalResolution
        && VerticalResolution == Private->ModeData[Index].VerticalResolution
        && ColorDepth == Private->ModeData[Index].ColorDepth)
      break;
  }
  // not found? try mode number
  if (Index >= Private->MaxMode)
  {
    VBoxVgaGetVmVariable(EFI_INFO_INDEX_GRAPHICS_MODE, (CHAR8 *)&Index, sizeof(Index));
    // try with mode 2 (usually 1024x768) as a fallback
    if (Index >= Private->MaxMode)
      Index = 2;
    // try with mode 0 (usually 640x480) as a fallback
    if (Index >= Private->MaxMode)
      Index = 0;
  }

  // skip mode setting completely if there is no valid mode
  if (Index >= Private->MaxMode)
    return EFI_UNSUPPORTED;

  GraphicsOutput->SetMode (GraphicsOutput, Index);

  DrawLogo (
    Private,
    Private->ModeData[Private->GraphicsOutput.Mode->Mode].HorizontalResolution,
    Private->ModeData[Private->GraphicsOutput.Mode->Mode].VerticalResolution
    );

  PcdSet32S(PcdVideoHorizontalResolution, Private->ModeData[Private->GraphicsOutput.Mode->Mode].HorizontalResolution);
  PcdSet32S(PcdVideoVerticalResolution, Private->ModeData[Private->GraphicsOutput.Mode->Mode].VerticalResolution);

  return EFI_SUCCESS;
}
开发者ID:mdaniel，项目名称:virtualbox-org-svn-vbox-trunk，代码行数:85，代码来源:VBoxVgaGraphicsOutput.c

示例6: RGB

/**
 * efi_main - The entry point for the EFI application
 * @image: firmware-allocated handle that identifies the image
 * @SystemTable: EFI system table
 */
EFI_STATUS
efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systemTable)
{
	EFI_BOOT_SERVICES *bs = systemTable->BootServices;
	EFI_GRAPHICS_OUTPUT_PROTOCOL *graphicsProtocol;

	SIMPLE_TEXT_OUTPUT_INTERFACE *conOut = systemTable->ConOut;
	EFI_EVENT event = systemTable->ConIn->WaitForKey;
	UINTN index;

	int i, modeCount;

	EFI_STATUS status = bs->LocateProtocol(&GraphicsOutputProtocolGUID, NULL, 
		(void**)&graphicsProtocol);

	if (EFI_ERROR(status) || graphicsProtocol == NULL) {
		conOut->OutputString(conOut, L"Failed to init gfx!\r\n");
		return status;
	}

	//Switch to current mode so gfx is started.
	status = graphicsProtocol->SetMode(graphicsProtocol, graphicsProtocol->Mode->Mode);
	if (EFI_ERROR(status)) {
		conOut->OutputString(conOut, L"Failed to set default mode!\r\n");
		return status;
	}

	conOut->OutputString(conOut, L"Current mode: ");
	printInt(conOut, graphicsProtocol->Mode->Mode);
	conOut->OutputString(conOut, L"\r\n");

	modeCount = graphicsProtocol->Mode->MaxMode;
	for (i = 0; i < modeCount; i++) {
		conOut->OutputString(conOut, L"\r\n");
		printInt(conOut, i);
		conOut->OutputString(conOut, L": ");
		EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info;
		UINTN SizeOfInfo;
		status = graphicsProtocol->QueryMode(graphicsProtocol, i, &SizeOfInfo, &info);

		if (EFI_ERROR(status)) {
			conOut->OutputString(conOut, L" Failure to query mode: ");
			printInt(conOut, status);
			continue;
		}
		printInt(conOut, info->HorizontalResolution);
		conOut->OutputString(conOut, L" x ");
		printInt(conOut, info->VerticalResolution);

		switch(info->PixelFormat) {
			case PixelRedGreenBlueReserved8BitPerColor:
				conOut->OutputString(conOut, L" RGB(R)");
				break;
			case PixelBlueGreenRedReserved8BitPerColor:
				conOut->OutputString(conOut, L" BGR(R)");
				break;
			case PixelBitMask:
				conOut->OutputString(conOut, L" BitMask ");
				printInt(conOut, info->PixelInformation.RedMask);
				conOut->OutputString(conOut, L"R ");
				printInt(conOut, info->PixelInformation.GreenMask);
				conOut->OutputString(conOut, L"G ");
				printInt(conOut, info->PixelInformation.BlueMask);
				conOut->OutputString(conOut, L"B ");
				printInt(conOut, info->PixelInformation.ReservedMask);
				conOut->OutputString(conOut, L"Reserved ");
				break;
			case PixelBltOnly:
				conOut->OutputString(conOut, L" (blt only)");
				break;
			default:
				conOut->OutputString(conOut, L" (Invalid pixel format)");
				break;
		}
		conOut->OutputString(conOut, L" Pixel per scanline: ");
		printInt(conOut, info->PixelsPerScanLine);
	}

	bs->WaitForEvent(1, &event, &index);
	return EFI_SUCCESS;
}
开发者ID:cirosantilli，项目名称:efi-example，代码行数:86，代码来源:gfx_example.c

示例7: SetMode

//
// TDS 4.2.2
//
EFI_STATUS
BBTestSetModeConformanceAutoTest (
  IN EFI_BB_TEST_PROTOCOL       *This,
  IN VOID                       *ClientInterface,
  IN EFI_TEST_LEVEL             TestLevel,
  IN EFI_HANDLE                 SupportHandle
  )
/*++

Routine Description:

  Entrypoint for EFI_GRAPHICS_OUTPUT_PROTOCOL.SetMode() Conformance Test

Arguments:

  This            - A pointer of EFI_BB_TEST_PROTOCOL
  ClientInterface - A pointer to the interface to be tested
  TestLevel       - Test "thoroughness" control
  SupportHandle   - A handle containing protocols required

Returns:

  EFI_SUCCESS - Finish the test successfully

--*/
{
  EFI_STANDARD_TEST_LIBRARY_PROTOCOL    *StandardLib;
  EFI_STATUS                            Status;
  EFI_GRAPHICS_OUTPUT_PROTOCOL          *GraphicsOutput;

  EFI_TEST_ASSERTION                    AssertionType;

  UINT32                                Index;

  UINT32                                CurrentMode;
  UINT32                                MaxMode;
  UINTN                                 sizeofInfo;
  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  *info;

  GraphicsOutput  = (EFI_GRAPHICS_OUTPUT_PROTOCOL *) ClientInterface;

  CurrentMode     = GraphicsOutput->Mode->Mode;

  if ((Status = InitTestEnv (SupportHandle, &StandardLib, GraphicsOutput)) != EFI_SUCCESS) {
    return Status;

  }
  //
  // Assertion Point
  //
  //
  MaxMode = GraphicsOutput->Mode->MaxMode;
  for (Index = 0; Index < MaxMode; Index++) {

    Status = GraphicsOutput->SetMode (
                              GraphicsOutput,
                              Index
                              );

    if (Status == EFI_UNSUPPORTED) {
      AssertionType = EFI_TEST_ASSERTION_FAILED;
    } else {
      AssertionType = EFI_TEST_ASSERTION_PASSED;
    }

    StandardLib->RecordAssertion (
                   StandardLib,
                   AssertionType,
                   gGraphicsOutputSetModeConformanceTestAssertionGuid001,
                   L"EFI_GRAPHICS_OUTPUT_PROTOCOL.SetMode - SetMode() with valid mode",
                   L"%a:%d: mode:%d,Status = %r,Expected = not EFI_UNSUPPORTED ",
                   __FILE__,
                   (UINTN)__LINE__,
                   Index,
                   Status
                   );
    //
    // Check the content of info
    //
    if (Status == EFI_SUCCESS) {
      sizeofInfo = 0;
      info       = NULL;
      Status = GraphicsOutput->QueryMode (
                                 GraphicsOutput,
                                 Index,
                                 &sizeofInfo,
                                 &info
                                 );
      if (Status != EFI_SUCCESS) {
        AssertionType = EFI_TEST_ASSERTION_FAILED;
      }   else {
        AssertionType = EFI_TEST_ASSERTION_PASSED;
      }

      if (EfiCompareMem (
          (void *) info,
          (void *) GraphicsOutput->Mode->Info,
//.........这里部分代码省略.........
开发者ID:JackNine，项目名称:2ndProject，代码行数:101，代码来源:GraphicsOutputBBTestConformance.c

示例8: sizeof

EFI_STATUS
QemuVideoGraphicsOutputConstructor (
  QEMU_VIDEO_PRIVATE_DATA  *Private
  )
{
  EFI_STATUS                   Status;
  EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
  UINT32	               ModeNumber;
  UINT32                       InitialModeNumber;

  GraphicsOutput            = &Private->GraphicsOutput;
  GraphicsOutput->QueryMode = QemuVideoGraphicsOutputQueryMode;
  GraphicsOutput->SetMode   = QemuVideoGraphicsOutputSetMode;
  GraphicsOutput->Blt       = QemuVideoGraphicsOutputBlt;

  //
  // Initialize the private data
  //
  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE),
                  (VOID **) &Private->GraphicsOutput.Mode
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Status = gBS->AllocatePool (
                  EfiBootServicesData,
                  sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION),
                  (VOID **) &Private->GraphicsOutput.Mode->Info
                  );
  if (EFI_ERROR (Status)) {
    goto FreeMode;
  }
  Private->GraphicsOutput.Mode->MaxMode = (UINT32) Private->MaxMode;
  Private->GraphicsOutput.Mode->Mode    = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;
  Private->LineBuffer                   = NULL;

  //
  // Initialize the hardware
  //

  // Search for 800x600 resolution for initial mode
  InitialModeNumber = 0;
  for (ModeNumber = 0; ModeNumber < Private->MaxMode; ModeNumber++) {
    if (Private->ModeData[ModeNumber].HorizontalResolution == 800 && Private->ModeData[ModeNumber].VerticalResolution == 600) {
      InitialModeNumber = ModeNumber;
      break;
    }
  }

  Status = GraphicsOutput->SetMode (GraphicsOutput, InitialModeNumber);
  if (EFI_ERROR (Status)) {
    goto FreeInfo;
  }

  DrawLogo (
    Private,
    Private->ModeData[Private->GraphicsOutput.Mode->Mode].HorizontalResolution,
    Private->ModeData[Private->GraphicsOutput.Mode->Mode].VerticalResolution
    );

  return EFI_SUCCESS;

FreeInfo:
  FreePool (Private->GraphicsOutput.Mode->Info);

FreeMode:
  FreePool (Private->GraphicsOutput.Mode);
  Private->GraphicsOutput.Mode = NULL;

  return Status;
}
开发者ID:F3R-FernandoReis，项目名称:clover，代码行数:74，代码来源:Gop.c


注：本文中的EFI_GRAPHICS_OUTPUT_PROTOCOL::SetMode方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。