MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterGraphics.c

   1 /** @file
   2   Support for Graphics output spliter.
   3
   4 Copyright (c) 2006 - 2009, Intel Corporation. <BR>
   5 All rights reserved. This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13
  14 **/
  15
  16 #include "ConSplitter.h"
  17
  18
  19 CHAR16 mCrLfString[3] = { CHAR_CARRIAGE_RETURN, CHAR_LINEFEED, CHAR_NULL };
  20
  21 /**
  22   Returns information for an available graphics mode that the graphics device
  23   and the set of active video output devices supports.
  24
  25   @param  This                  The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
  26   @param  ModeNumber            The mode number to return information on.
  27   @param  SizeOfInfo            A pointer to the size, in bytes, of the Info buffer.
  28   @param  Info                  A pointer to callee allocated buffer that returns information about ModeNumber.
  29
  30   @retval EFI_SUCCESS           Mode information returned.
  31   @retval EFI_BUFFER_TOO_SMALL  The Info buffer was too small.
  32   @retval EFI_DEVICE_ERROR      A hardware error occurred trying to retrieve the video mode.
  33   @retval EFI_NOT_STARTED       Video display is not initialized. Call SetMode ()
  34   @retval EFI_INVALID_PARAMETER One of the input args was NULL.
  35   @retval EFI_OUT_OF_RESOURCES  No resource available.
  36
  37 **/
  38 EFI_STATUS
  39 EFIAPI
  40 ConSpliterGraphicsOutputQueryMode (
  41   IN  EFI_GRAPHICS_OUTPUT_PROTOCOL          *This,
  42   IN  UINT32                                ModeNumber,
  43   OUT UINTN                                 *SizeOfInfo,
  44   OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  **Info
  45   )
  46 {
  47   TEXT_OUT_SPLITTER_PRIVATE_DATA  *Private;
  48
  49   if (This == NULL || Info == NULL || SizeOfInfo == NULL || ModeNumber >= This->Mode->MaxMode) {
  50     return EFI_INVALID_PARAMETER;
  51   }
  52
  53   //
  54   // retrieve private data
  55   //
  56   Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
  57
  58   if (Private->HardwareNeedsStarting) {
  59     return EFI_NOT_STARTED;
  60   }
  61
  62   *Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
  63   if (*Info == NULL) {
  64     return EFI_OUT_OF_RESOURCES;
  65   }
  66
  67   *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
  68
  69   CopyMem (*Info, &Private->GraphicsOutputModeBuffer[ModeNumber], *SizeOfInfo);
  70
  71   return EFI_SUCCESS;
  72 }
  73
  74
  75 /**
  76   Set the video device into the specified mode and clears the visible portions of
  77   the output display to black.
  78
  79   @param  This                  The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
  80   @param  ModeNumber            Abstraction that defines the current video mode.
  81
  82   @retval EFI_SUCCESS           The graphics mode specified by ModeNumber was selected.
  83   @retval EFI_DEVICE_ERROR      The device had an error and could not complete the request.
  84   @retval EFI_UNSUPPORTED       ModeNumber is not supported by this device.
  85   @retval EFI_OUT_OF_RESOURCES  No resource available.
  86
  87 **/
  88 EFI_STATUS
  89 EFIAPI
  90 ConSpliterGraphicsOutputSetMode (
  91   IN  EFI_GRAPHICS_OUTPUT_PROTOCOL * This,
  92   IN  UINT32                       ModeNumber
  93   )
  94 {
  95   EFI_STATUS                             Status;
  96   TEXT_OUT_SPLITTER_PRIVATE_DATA         *Private;
  97   UINTN                                  Index;
  98   EFI_STATUS                             ReturnStatus;
  99   EFI_GRAPHICS_OUTPUT_MODE_INFORMATION   *Mode;
 100   EFI_GRAPHICS_OUTPUT_PROTOCOL           *GraphicsOutput;
 101   UINTN                                  NumberIndex;
 102   UINTN                                  SizeOfInfo;
 103   EFI_GRAPHICS_OUTPUT_MODE_INFORMATION   *Info;
 104   EFI_UGA_DRAW_PROTOCOL                  *UgaDraw;
 105
 106   if (ModeNumber >= This->Mode->MaxMode) {
 107     return EFI_UNSUPPORTED;
 108   }
 109
 110   if (ModeNumber == This->Mode->Mode) {
 111     return EFI_SUCCESS;
 112   }
 113
 114   Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
 115   Mode = &Private->GraphicsOutputModeBuffer[ModeNumber];
 116
 117   ReturnStatus = EFI_SUCCESS;
 118   //
 119   // return the worst status met
 120   //
 121   for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
 122     GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
 123     if (GraphicsOutput != NULL) {
 124       //
 125       // Find corresponding ModeNumber of this GraphicsOutput instance
 126       //
 127       for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) {
 128         Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info);
 129         if (EFI_ERROR (Status)) {
 130           return Status;
 131         }
 132         if ((Info->HorizontalResolution == Mode->HorizontalResolution) && (Info->VerticalResolution == Mode->VerticalResolution)) {
 133           FreePool (Info);
 134           break;
 135         }
 136         FreePool (Info);
 137       }
 138
 139       Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex);
 140       if (EFI_ERROR (Status)) {
 141         ReturnStatus = Status;
 142       }
 143     } else if (FeaturePcdGet (PcdUgaConsumeSupport)) {
 144       UgaDraw = Private->TextOutList[Index].UgaDraw;
 145       if (UgaDraw != NULL) {
 146         Status = UgaDraw->SetMode (
 147                             UgaDraw,
 148                             Mode->HorizontalResolution,
 149                             Mode->VerticalResolution,
 150                             32,
 151                             60
 152                             );
 153         if (EFI_ERROR (Status)) {
 154           ReturnStatus = Status;
 155         }
 156       }
 157     }
 158   }
 159
 160   This->Mode->Mode = ModeNumber;
 161
 162   CopyMem (This->Mode->Info, &Private->GraphicsOutputModeBuffer[ModeNumber], This->Mode->SizeOfInfo);
 163
 164   //
 165   // Information is not enough here, so the following items remain unchanged:
 166   //  GraphicsOutputMode->Info->Version, GraphicsOutputMode->Info->PixelFormat
 167   //  GraphicsOutputMode->SizeOfInfo, GraphicsOutputMode->FrameBufferBase, GraphicsOutputMode->FrameBufferSize
 168   // These items will be initialized/updated when a new GOP device is added into ConsoleSplitter.
 169   //
 170
 171   Private->HardwareNeedsStarting = FALSE;
 172
 173   return ReturnStatus;
 174 }
 175
 176
 177
 178 /**
 179   The following table defines actions for BltOperations.
 180
 181   EfiBltVideoFill - Write data from the  BltBuffer pixel (SourceX, SourceY)
 182   directly to every pixel of the video display rectangle
 183   (DestinationX, DestinationY)
 184   (DestinationX + Width, DestinationY + Height).
 185   Only one pixel will be used from the BltBuffer. Delta is NOT used.
 186   EfiBltVideoToBltBuffer - Read data from the video display rectangle
 187   (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
 188   the BltBuffer rectangle (DestinationX, DestinationY )
 189   (DestinationX + Width, DestinationY + Height). If DestinationX or
 190   DestinationY is not zero then Delta must be set to the length in bytes
 191   of a row in the BltBuffer.
 192   EfiBltBufferToVideo - Write data from the  BltBuffer rectangle
 193   (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
 194   video display rectangle (DestinationX, DestinationY)
 195   (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
 196   not zero then Delta must be set to the length in bytes of a row in the
 197   BltBuffer.
 198   EfiBltVideoToVideo - Copy from the video display rectangle
 199   (SourceX, SourceY) (SourceX + Width, SourceY + Height) .
 200   to the video display rectangle (DestinationX, DestinationY)
 201   (DestinationX + Width, DestinationY + Height).
 202   The BltBuffer and Delta  are not used in this mode.
 203
 204   @param  This                    Protocol instance pointer.
 205   @param  BltBuffer               Buffer containing data to blit into video buffer.
 206                                   This buffer has a size of
 207                                   Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
 208   @param  BltOperation            Operation to perform on BlitBuffer and video
 209                                   memory
 210   @param  SourceX                 X coordinate of source for the BltBuffer.
 211   @param  SourceY                 Y coordinate of source for the BltBuffer.
 212   @param  DestinationX            X coordinate of destination for the BltBuffer.
 213   @param  DestinationY            Y coordinate of destination for the BltBuffer.
 214   @param  Width                   Width of rectangle in BltBuffer in pixels.
 215   @param  Height                  Hight of rectangle in BltBuffer in pixels.
 216   @param  Delta                   OPTIONAL.
 217
 218   @retval EFI_SUCCESS             The Blt operation completed.
 219   @retval EFI_INVALID_PARAMETER   BltOperation is not valid.
 220   @retval EFI_DEVICE_ERROR        A hardware error occured writting to the video
 221                                   buffer.
 222
 223 **/
 224 EFI_STATUS
 225 EFIAPI
 226 ConSpliterGraphicsOutputBlt (
 227   IN  EFI_GRAPHICS_OUTPUT_PROTOCOL                  *This,
 228   IN  EFI_GRAPHICS_OUTPUT_BLT_PIXEL                 *BltBuffer, OPTIONAL
 229   IN  EFI_GRAPHICS_OUTPUT_BLT_OPERATION             BltOperation,
 230   IN  UINTN                                         SourceX,
 231   IN  UINTN                                         SourceY,
 232   IN  UINTN                                         DestinationX,
 233   IN  UINTN                                         DestinationY,
 234   IN  UINTN                                         Width,
 235   IN  UINTN                                         Height,
 236   IN  UINTN                                         Delta         OPTIONAL
 237   )
 238 {
 239   EFI_STATUS                      Status;
 240   EFI_STATUS                      ReturnStatus;
 241   TEXT_OUT_SPLITTER_PRIVATE_DATA  *Private;
 242   UINTN                           Index;
 243   EFI_GRAPHICS_OUTPUT_PROTOCOL    *GraphicsOutput;
 244   EFI_UGA_DRAW_PROTOCOL           *UgaDraw;
 245
 246   Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
 247
 248   ReturnStatus = EFI_SUCCESS;
 249
 250   //
 251   // return the worst status met
 252   //
 253   for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
 254     GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
 255     if (GraphicsOutput != NULL) {
 256       Status = GraphicsOutput->Blt (
 257                               GraphicsOutput,
 258                               BltBuffer,
 259                               BltOperation,
 260                               SourceX,
 261                               SourceY,
 262                               DestinationX,
 263                               DestinationY,
 264                               Width,
 265                               Height,
 266                               Delta
 267                               );
 268       if (EFI_ERROR (Status)) {
 269         ReturnStatus = Status;
 270       } else if (BltOperation == EfiBltVideoToBltBuffer) {
 271         //
 272         // Only need to read the data into buffer one time
 273         //
 274         return EFI_SUCCESS;
 275       }
 276     }
 277
 278     UgaDraw = Private->TextOutList[Index].UgaDraw;
 279     if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
 280       Status = UgaDraw->Blt (
 281                               UgaDraw,
 282                               (EFI_UGA_PIXEL *) BltBuffer,
 283                               (EFI_UGA_BLT_OPERATION) BltOperation,
 284                               SourceX,
 285                               SourceY,
 286                               DestinationX,
 287                               DestinationY,
 288                               Width,
 289                               Height,
 290                               Delta
 291                               );
 292       if (EFI_ERROR (Status)) {
 293         ReturnStatus = Status;
 294       } else if (BltOperation == EfiBltVideoToBltBuffer) {
 295         //
 296         // Only need to read the data into buffer one time
 297         //
 298         return EFI_SUCCESS;
 299       }
 300     }
 301   }
 302
 303   return ReturnStatus;
 304 }
 305
 306 /**
 307   Return the current video mode information.
 308
 309   @param  This                  The EFI_UGA_DRAW_PROTOCOL instance.
 310   @param  HorizontalResolution  The size of video screen in pixels in the X dimension.
 311   @param  VerticalResolution    The size of video screen in pixels in the Y dimension.
 312   @param  ColorDepth            Number of bits per pixel, currently defined to be 32.
 313   @param  RefreshRate           The refresh rate of the monitor in Hertz.
 314
 315   @retval EFI_SUCCESS           Mode information returned.
 316   @retval EFI_NOT_STARTED       Video display is not initialized. Call SetMode ()
 317   @retval EFI_INVALID_PARAMETER One of the input args was NULL.
 318
 319 **/
 320 EFI_STATUS
 321 EFIAPI
 322 ConSpliterUgaDrawGetMode (
 323   IN  EFI_UGA_DRAW_PROTOCOL           *This,
 324   OUT UINT32                          *HorizontalResolution,
 325   OUT UINT32                          *VerticalResolution,
 326   OUT UINT32                          *ColorDepth,
 327   OUT UINT32                          *RefreshRate
 328   )
 329 {
 330   TEXT_OUT_SPLITTER_PRIVATE_DATA  *Private;
 331
 332   if ((HorizontalResolution == NULL) ||
 333       (VerticalResolution   == NULL) ||
 334       (RefreshRate          == NULL) ||
 335       (ColorDepth           == NULL)) {
 336     return EFI_INVALID_PARAMETER;
 337   }
 338   //
 339   // retrieve private data
 340   //
 341   Private               = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
 342
 343   *HorizontalResolution = Private->UgaHorizontalResolution;
 344   *VerticalResolution   = Private->UgaVerticalResolution;
 345   *ColorDepth           = Private->UgaColorDepth;
 346   *RefreshRate          = Private->UgaRefreshRate;
 347
 348   return EFI_SUCCESS;
 349 }
 350
 351
 352 /**
 353   Set the current video mode information.
 354
 355   @param  This                 The EFI_UGA_DRAW_PROTOCOL instance.
 356   @param  HorizontalResolution The size of video screen in pixels in the X dimension.
 357   @param  VerticalResolution   The size of video screen in pixels in the Y dimension.
 358   @param  ColorDepth           Number of bits per pixel, currently defined to be 32.
 359   @param  RefreshRate          The refresh rate of the monitor in Hertz.
 360
 361   @retval EFI_SUCCESS          Mode information returned.
 362   @retval EFI_NOT_STARTED      Video display is not initialized. Call SetMode ()
 363   @retval EFI_OUT_OF_RESOURCES Out of resources.
 364
 365 **/
 366 EFI_STATUS
 367 EFIAPI
 368 ConSpliterUgaDrawSetMode (
 369   IN  EFI_UGA_DRAW_PROTOCOL           *This,
 370   IN UINT32                           HorizontalResolution,
 371   IN UINT32                           VerticalResolution,
 372   IN UINT32                           ColorDepth,
 373   IN UINT32                           RefreshRate
 374   )
 375 {
 376   EFI_STATUS                             Status;
 377   TEXT_OUT_SPLITTER_PRIVATE_DATA         *Private;
 378   UINTN                                  Index;
 379   EFI_STATUS                             ReturnStatus;
 380   EFI_GRAPHICS_OUTPUT_PROTOCOL           *GraphicsOutput;
 381   UINTN                                  NumberIndex;
 382   UINTN                                  SizeOfInfo;
 383   EFI_GRAPHICS_OUTPUT_MODE_INFORMATION   *Info;
 384   EFI_UGA_DRAW_PROTOCOL                  *UgaDraw;
 385
 386   Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
 387
 388   ReturnStatus = EFI_SUCCESS;
 389
 390   //
 391   // Update the Mode data
 392   //
 393   Private->UgaHorizontalResolution  = HorizontalResolution;
 394   Private->UgaVerticalResolution    = VerticalResolution;
 395   Private->UgaColorDepth            = ColorDepth;
 396   Private->UgaRefreshRate           = RefreshRate;
 397
 398   //
 399   // return the worst status met
 400   //
 401   for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
 402
 403     GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
 404     if (GraphicsOutput != NULL) {
 405       //
 406       // Find corresponding ModeNumber of this GraphicsOutput instance
 407       //
 408       for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) {
 409         Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info);
 410         if (EFI_ERROR (Status)) {
 411           return Status;
 412         }
 413         if ((Info->HorizontalResolution == HorizontalResolution) && (Info->VerticalResolution == VerticalResolution)) {
 414           FreePool (Info);
 415           break;
 416         }
 417         FreePool (Info);
 418       }
 419
 420       Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex);
 421       if (EFI_ERROR (Status)) {
 422         ReturnStatus = Status;
 423       }
 424     } else if (FeaturePcdGet (PcdUgaConsumeSupport)){
 425       UgaDraw = Private->TextOutList[Index].UgaDraw;
 426       if (UgaDraw != NULL) {
 427         Status = UgaDraw->SetMode (
 428                           UgaDraw,
 429                           HorizontalResolution,
 430                           VerticalResolution,
 431                           ColorDepth,
 432                           RefreshRate
 433                           );
 434         if (EFI_ERROR (Status)) {
 435           ReturnStatus = Status;
 436         }
 437       }
 438     }
 439   }
 440
 441   return ReturnStatus;
 442 }
 443
 444
 445 /**
 446   Blt a rectangle of pixels on the graphics screen.
 447
 448   The following table defines actions for BltOperations.
 449
 450   EfiUgaVideoFill:
 451     Write data from the  BltBuffer pixel (SourceX, SourceY)
 452     directly to every pixel of the video display rectangle
 453     (DestinationX, DestinationY)
 454     (DestinationX + Width, DestinationY + Height).
 455     Only one pixel will be used from the BltBuffer. Delta is NOT used.
 456   EfiUgaVideoToBltBuffer:
 457     Read data from the video display rectangle
 458     (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
 459     the BltBuffer rectangle (DestinationX, DestinationY )
 460     (DestinationX + Width, DestinationY + Height). If DestinationX or
 461     DestinationY is not zero then Delta must be set to the length in bytes
 462     of a row in the BltBuffer.
 463   EfiUgaBltBufferToVideo:
 464     Write data from the  BltBuffer rectangle
 465     (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
 466     video display rectangle (DestinationX, DestinationY)
 467     (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
 468     not zero then Delta must be set to the length in bytes of a row in the
 469     BltBuffer.
 470   EfiUgaVideoToVideo:
 471     Copy from the video display rectangle
 472     (SourceX, SourceY) (SourceX + Width, SourceY + Height) .
 473     to the video display rectangle (DestinationX, DestinationY)
 474     (DestinationX + Width, DestinationY + Height).
 475     The BltBuffer and Delta  are not used in this mode.
 476
 477   @param  This           Protocol instance pointer.
 478   @param  BltBuffer      Buffer containing data to blit into video buffer. This
 479                          buffer has a size of Width*Height*sizeof(EFI_UGA_PIXEL)
 480   @param  BltOperation   Operation to perform on BlitBuffer and video memory
 481   @param  SourceX        X coordinate of source for the BltBuffer.
 482   @param  SourceY        Y coordinate of source for the BltBuffer.
 483   @param  DestinationX   X coordinate of destination for the BltBuffer.
 484   @param  DestinationY   Y coordinate of destination for the BltBuffer.
 485   @param  Width          Width of rectangle in BltBuffer in pixels.
 486   @param  Height         Hight of rectangle in BltBuffer in pixels.
 487   @param  Delta          OPTIONAL
 488
 489   @retval EFI_SUCCESS            The Blt operation completed.
 490   @retval EFI_INVALID_PARAMETER  BltOperation is not valid.
 491   @retval EFI_DEVICE_ERROR       A hardware error occured writting to the video buffer.
 492
 493 **/
 494 EFI_STATUS
 495 EFIAPI
 496 ConSpliterUgaDrawBlt (
 497   IN  EFI_UGA_DRAW_PROTOCOL                         *This,
 498   IN  EFI_UGA_PIXEL                                 *BltBuffer, OPTIONAL
 499   IN  EFI_UGA_BLT_OPERATION                         BltOperation,
 500   IN  UINTN                                         SourceX,
 501   IN  UINTN                                         SourceY,
 502   IN  UINTN                                         DestinationX,
 503   IN  UINTN                                         DestinationY,
 504   IN  UINTN                                         Width,
 505   IN  UINTN                                         Height,
 506   IN  UINTN                                         Delta         OPTIONAL
 507   )
 508 {
 509   EFI_STATUS                      Status;
 510   TEXT_OUT_SPLITTER_PRIVATE_DATA  *Private;
 511   UINTN                           Index;
 512   EFI_STATUS                      ReturnStatus;
 513   EFI_GRAPHICS_OUTPUT_PROTOCOL    *GraphicsOutput;
 514
 515   Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
 516
 517   ReturnStatus = EFI_SUCCESS;
 518   //
 519   // return the worst status met
 520   //
 521   for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
 522     GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
 523     if (GraphicsOutput != NULL) {
 524       Status = GraphicsOutput->Blt (
 525                               GraphicsOutput,
 526                               (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) BltBuffer,
 527                               (EFI_GRAPHICS_OUTPUT_BLT_OPERATION) BltOperation,
 528                               SourceX,
 529                               SourceY,
 530                               DestinationX,
 531                               DestinationY,
 532                               Width,
 533                               Height,
 534                               Delta
 535                               );
 536       if (EFI_ERROR (Status)) {
 537         ReturnStatus = Status;
 538       } else if (BltOperation == EfiBltVideoToBltBuffer) {
 539         //
 540         // Only need to read the data into buffer one time
 541         //
 542         return EFI_SUCCESS;
 543       }
 544     }
 545
 546     if (Private->TextOutList[Index].UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
 547       Status = Private->TextOutList[Index].UgaDraw->Blt (
 548                                                       Private->TextOutList[Index].UgaDraw,
 549                                                       BltBuffer,
 550                                                       BltOperation,
 551                                                       SourceX,
 552                                                       SourceY,
 553                                                       DestinationX,
 554                                                       DestinationY,
 555                                                       Width,
 556                                                       Height,
 557                                                       Delta
 558                                                       );
 559       if (EFI_ERROR (Status)) {
 560         ReturnStatus = Status;
 561       } else if (BltOperation == EfiUgaVideoToBltBuffer) {
 562         //
 563         // Only need to read the data into buffer one time
 564         //
 565         return EFI_SUCCESS;
 566       }
 567     }
 568   }
 569
 570   return ReturnStatus;
 571 }
 572
 573 /**
 574   Sets the output device(s) to a specified mode.
 575
 576   @param  Private                 Text Out Splitter pointer.
 577   @param  ModeNumber              The mode number to set.
 578
 579 **/
 580 VOID
 581 TextOutSetMode (
 582   IN  TEXT_OUT_SPLITTER_PRIVATE_DATA  *Private,
 583   IN  UINTN                           ModeNumber
 584   )
 585 {
 586   //
 587   // No need to do extra check here as whether (Column, Row) is valid has
 588   // been checked in ConSplitterTextOutSetCursorPosition. And (0, 0) should
 589   // always be supported.
 590   //
 591   Private->TextOutMode.Mode          = (INT32) ModeNumber;
 592   Private->TextOutMode.CursorColumn  = 0;
 593   Private->TextOutMode.CursorRow     = 0;
 594   Private->TextOutMode.CursorVisible = TRUE;
 595
 596   return;
 597 }