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[mirror_edk2.git] / OptionRomPkg / Library / FrameBufferBltLib / FrameBufferBltLib.c
1 /** @file
2 FrameBufferBltLib - Library to perform blt operations on a frame buffer.
3
4 Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
5 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 #include "PiDxe.h"
16 #include <Library/BaseLib.h>
17 #include <Library/BaseMemoryLib.h>
18 #include <Library/BltLib.h>
19 #include <Library/DebugLib.h>
20
21 #if 0
22 #define VDEBUG DEBUG
23 #else
24 #define VDEBUG(x)
25 #endif
26
27 #define MAX_LINE_BUFFER_SIZE (SIZE_4KB * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
28
29 UINTN mBltLibColorDepth;
30 UINTN mBltLibWidthInBytes;
31 UINTN mBltLibBytesPerPixel;
32 UINTN mBltLibWidthInPixels;
33 UINTN mBltLibHeight;
34 UINT8 mBltLibLineBuffer[MAX_LINE_BUFFER_SIZE];
35 UINT8 *mBltLibFrameBuffer;
36 EFI_GRAPHICS_PIXEL_FORMAT mPixelFormat;
37 EFI_PIXEL_BITMASK mPixelBitMasks;
38 INTN mPixelShl[4]; // R-G-B-Rsvd
39 INTN mPixelShr[4]; // R-G-B-Rsvd
40
41
42 VOID
43 ConfigurePixelBitMaskFormat (
44 IN EFI_PIXEL_BITMASK *BitMask
45 )
46 {
47 UINTN Loop;
48 UINT32 *Masks;
49 UINT32 MergedMasks;
50
51 MergedMasks = 0;
52 Masks = (UINT32*) BitMask;
53 for (Loop = 0; Loop < 3; Loop++) {
54 ASSERT ((Loop == 3) || (Masks[Loop] != 0));
55 ASSERT ((MergedMasks & Masks[Loop]) == 0);
56 mPixelShl[Loop] = HighBitSet32 (Masks[Loop]) - 23 + (Loop * 8);
57 if (mPixelShl[Loop] < 0) {
58 mPixelShr[Loop] = -mPixelShl[Loop];
59 mPixelShl[Loop] = 0;
60 } else {
61 mPixelShr[Loop] = 0;
62 }
63 MergedMasks = (UINT32) (MergedMasks | Masks[Loop]);
64 DEBUG ((EFI_D_INFO, "%d: shl:%d shr:%d mask:%x\n", Loop, mPixelShl[Loop], mPixelShr[Loop], Masks[Loop]));
65 }
66 MergedMasks = (UINT32) (MergedMasks | Masks[3]);
67
68 ASSERT (MergedMasks != 0);
69 mBltLibBytesPerPixel = (UINTN) ((HighBitSet32 (MergedMasks) + 7) / 8);
70
71 DEBUG ((EFI_D_INFO, "Bytes per pixel: %d\n", mBltLibBytesPerPixel));
72
73 CopyMem (&mPixelBitMasks, BitMask, sizeof (*BitMask));
74 }
75
76
77 /**
78 Configure the FrameBufferLib instance
79
80 @param[in] FrameBuffer Pointer to the start of the frame buffer
81 @param[in] FrameBufferInfo Describes the frame buffer characteristics
82
83 @retval EFI_INVALID_PARAMETER - Invalid parameter
84 @retval EFI_UNSUPPORTED - The BltLib does not support this configuration
85 @retval EFI_SUCCESS - Blt operation success
86
87 **/
88 EFI_STATUS
89 EFIAPI
90 BltLibConfigure (
91 IN VOID *FrameBuffer,
92 IN EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *FrameBufferInfo
93 )
94 {
95 STATIC EFI_PIXEL_BITMASK RgbPixelMasks =
96 { 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000 };
97 STATIC EFI_PIXEL_BITMASK BgrPixelMasks =
98 { 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 };
99
100 switch (FrameBufferInfo->PixelFormat) {
101 case PixelRedGreenBlueReserved8BitPerColor:
102 ConfigurePixelBitMaskFormat (&RgbPixelMasks);
103 break;
104 case PixelBlueGreenRedReserved8BitPerColor:
105 ConfigurePixelBitMaskFormat (&BgrPixelMasks);
106 break;
107 case PixelBitMask:
108 ConfigurePixelBitMaskFormat (&(FrameBufferInfo->PixelInformation));
109 break;
110 case PixelBltOnly:
111 ASSERT (FrameBufferInfo->PixelFormat != PixelBltOnly);
112 return EFI_UNSUPPORTED;
113 default:
114 ASSERT (FALSE);
115 return EFI_INVALID_PARAMETER;
116 }
117 mPixelFormat = FrameBufferInfo->PixelFormat;
118
119 mBltLibFrameBuffer = (UINT8*) FrameBuffer;
120 mBltLibWidthInPixels = (UINTN) FrameBufferInfo->HorizontalResolution;
121 mBltLibHeight = (UINTN) FrameBufferInfo->VerticalResolution;
122 mBltLibWidthInBytes = mBltLibWidthInPixels * mBltLibBytesPerPixel;
123
124 ASSERT (mBltLibWidthInBytes < sizeof (mBltLibLineBuffer));
125
126 return EFI_SUCCESS;
127 }
128
129
130 /**
131 Performs a UEFI Graphics Output Protocol Blt operation.
132
133 @param[in,out] BltBuffer - The data to transfer to screen
134 @param[in] BltOperation - The operation to perform
135 @param[in] SourceX - The X coordinate of the source for BltOperation
136 @param[in] SourceY - The Y coordinate of the source for BltOperation
137 @param[in] DestinationX - The X coordinate of the destination for BltOperation
138 @param[in] DestinationY - The Y coordinate of the destination for BltOperation
139 @param[in] Width - The width of a rectangle in the blt rectangle in pixels
140 @param[in] Height - The height of a rectangle in the blt rectangle in pixels
141 @param[in] Delta - Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.
142 If a Delta of 0 is used, the entire BltBuffer will be operated on.
143 If a subrectangle of the BltBuffer is used, then Delta represents
144 the number of bytes in a row of the BltBuffer.
145
146 @retval EFI_DEVICE_ERROR - A hardware error occured
147 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
148 @retval EFI_SUCCESS - Blt operation success
149
150 **/
151 EFI_STATUS
152 EFIAPI
153 BltLibGopBlt (
154 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
155 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,
156 IN UINTN SourceX,
157 IN UINTN SourceY,
158 IN UINTN DestinationX,
159 IN UINTN DestinationY,
160 IN UINTN Width,
161 IN UINTN Height,
162 IN UINTN Delta
163 )
164 {
165 switch (BltOperation) {
166 case EfiBltVideoToBltBuffer:
167 return BltLibVideoToBltBufferEx (
168 BltBuffer,
169 SourceX,
170 SourceY,
171 DestinationX,
172 DestinationY,
173 Width,
174 Height,
175 Delta
176 );
177
178 case EfiBltVideoToVideo:
179 return BltLibVideoToVideo (
180 SourceX,
181 SourceY,
182 DestinationX,
183 DestinationY,
184 Width,
185 Height
186 );
187
188 case EfiBltVideoFill:
189 return BltLibVideoFill (
190 BltBuffer,
191 DestinationX,
192 DestinationY,
193 Width,
194 Height
195 );
196
197 case EfiBltBufferToVideo:
198 return BltLibBufferToVideoEx (
199 BltBuffer,
200 SourceX,
201 SourceY,
202 DestinationX,
203 DestinationY,
204 Width,
205 Height,
206 Delta
207 );
208 default:
209 return EFI_INVALID_PARAMETER;
210 }
211 }
212
213
214 /**
215 Performs a UEFI Graphics Output Protocol Blt Video Fill.
216
217 @param[in] Color Color to fill the region with
218 @param[in] DestinationX X location to start fill operation
219 @param[in] DestinationY Y location to start fill operation
220 @param[in] Width Width (in pixels) to fill
221 @param[in] Height Height to fill
222
223 @retval EFI_DEVICE_ERROR - A hardware error occured
224 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
225 @retval EFI_SUCCESS - The sizes were returned
226
227 **/
228 EFI_STATUS
229 EFIAPI
230 BltLibVideoFill (
231 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Color,
232 IN UINTN DestinationX,
233 IN UINTN DestinationY,
234 IN UINTN Width,
235 IN UINTN Height
236 )
237 {
238 UINTN DstY;
239 VOID *BltMemDst;
240 UINTN X;
241 UINT8 Uint8;
242 UINT32 Uint32;
243 UINT64 WideFill;
244 BOOLEAN UseWideFill;
245 BOOLEAN LineBufferReady;
246 UINTN Offset;
247 UINTN WidthInBytes;
248 UINTN SizeInBytes;
249
250 //
251 // BltBuffer to Video: Source is BltBuffer, destination is Video
252 //
253 if (DestinationY + Height > mBltLibHeight) {
254 DEBUG ((EFI_D_INFO, "VideoFill: Past screen (Y)\n"));
255 return EFI_INVALID_PARAMETER;
256 }
257
258 if (DestinationX + Width > mBltLibWidthInPixels) {
259 DEBUG ((EFI_D_INFO, "VideoFill: Past screen (X)\n"));
260 return EFI_INVALID_PARAMETER;
261 }
262
263 if (Width == 0 || Height == 0) {
264 DEBUG ((EFI_D_INFO, "VideoFill: Width or Height is 0\n"));
265 return EFI_INVALID_PARAMETER;
266 }
267
268 WidthInBytes = Width * mBltLibBytesPerPixel;
269
270 Uint32 = *(UINT32*) Color;
271 WideFill =
272 (UINT32) (
273 (((Uint32 << mPixelShl[0]) >> mPixelShr[0]) & mPixelBitMasks.RedMask) |
274 (((Uint32 << mPixelShl[1]) >> mPixelShr[1]) & mPixelBitMasks.GreenMask) |
275 (((Uint32 << mPixelShl[2]) >> mPixelShr[2]) & mPixelBitMasks.BlueMask)
276 );
277 VDEBUG ((EFI_D_INFO, "VideoFill: color=0x%x, wide-fill=0x%x\n", Uint32, WideFill));
278
279 //
280 // If the size of the pixel data evenly divides the sizeof
281 // WideFill, then a wide fill operation can be used
282 //
283 UseWideFill = TRUE;
284 if ((sizeof (WideFill) % mBltLibBytesPerPixel) == 0) {
285 for (X = mBltLibBytesPerPixel; X < sizeof (WideFill); X++) {
286 ((UINT8*)&WideFill)[X] = ((UINT8*)&WideFill)[X % mBltLibBytesPerPixel];
287 }
288 } else {
289 //
290 // If all the bytes in the pixel are the same value, then use
291 // a wide fill operation.
292 //
293 for (
294 X = 1, Uint8 = ((UINT8*)&WideFill)[0];
295 X < mBltLibBytesPerPixel;
296 X++) {
297 if (Uint8 != ((UINT8*)&WideFill)[X]) {
298 UseWideFill = FALSE;
299 break;
300 }
301 }
302 if (UseWideFill) {
303 SetMem ((VOID*) &WideFill, sizeof (WideFill), Uint8);
304 }
305 }
306
307 if (UseWideFill && (DestinationX == 0) && (Width == mBltLibWidthInPixels)) {
308 VDEBUG ((EFI_D_INFO, "VideoFill (wide, one-shot)\n"));
309 Offset = DestinationY * mBltLibWidthInPixels;
310 Offset = mBltLibBytesPerPixel * Offset;
311 BltMemDst = (VOID*) (mBltLibFrameBuffer + Offset);
312 SizeInBytes = WidthInBytes * Height;
313 if (SizeInBytes >= 8) {
314 SetMem32 (BltMemDst, SizeInBytes & ~3, (UINT32) WideFill);
315 SizeInBytes = SizeInBytes & 3;
316 }
317 if (SizeInBytes > 0) {
318 SetMem (BltMemDst, SizeInBytes, (UINT8)(UINTN) WideFill);
319 }
320 } else {
321 LineBufferReady = FALSE;
322 for (DstY = DestinationY; DstY < (Height + DestinationY); DstY++) {
323 Offset = (DstY * mBltLibWidthInPixels) + DestinationX;
324 Offset = mBltLibBytesPerPixel * Offset;
325 BltMemDst = (VOID*) (mBltLibFrameBuffer + Offset);
326
327 if (UseWideFill && (((UINTN) BltMemDst & 7) == 0)) {
328 VDEBUG ((EFI_D_INFO, "VideoFill (wide)\n"));
329 SizeInBytes = WidthInBytes;
330 if (SizeInBytes >= 8) {
331 SetMem64 (BltMemDst, SizeInBytes & ~7, WideFill);
332 SizeInBytes = SizeInBytes & 7;
333 }
334 if (SizeInBytes > 0) {
335 CopyMem (BltMemDst, (VOID*) &WideFill, SizeInBytes);
336 }
337 } else {
338 VDEBUG ((EFI_D_INFO, "VideoFill (not wide)\n"));
339 if (!LineBufferReady) {
340 CopyMem (mBltLibLineBuffer, &WideFill, mBltLibBytesPerPixel);
341 for (X = 1; X < Width; ) {
342 CopyMem(
343 (mBltLibLineBuffer + (X * mBltLibBytesPerPixel)),
344 mBltLibLineBuffer,
345 MIN (X, Width - X) * mBltLibBytesPerPixel
346 );
347 X = X + MIN (X, Width - X);
348 }
349 LineBufferReady = TRUE;
350 }
351 CopyMem (BltMemDst, mBltLibLineBuffer, WidthInBytes);
352 }
353 }
354 }
355
356 return EFI_SUCCESS;
357 }
358
359
360 /**
361 Performs a UEFI Graphics Output Protocol Blt Video to Buffer operation.
362
363 @param[out] BltBuffer Output buffer for pixel color data
364 @param[in] SourceX X location within video
365 @param[in] SourceY Y location within video
366 @param[in] Width Width (in pixels)
367 @param[in] Height Height
368
369 @retval EFI_DEVICE_ERROR - A hardware error occured
370 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
371 @retval EFI_SUCCESS - The sizes were returned
372
373 **/
374 EFI_STATUS
375 EFIAPI
376 BltLibVideoToBltBuffer (
377 OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
378 IN UINTN SourceX,
379 IN UINTN SourceY,
380 IN UINTN Width,
381 IN UINTN Height
382 )
383 {
384 return BltLibVideoToBltBufferEx (
385 BltBuffer,
386 SourceX,
387 SourceY,
388 0,
389 0,
390 Width,
391 Height,
392 0
393 );
394 }
395
396
397 /**
398 Performs a UEFI Graphics Output Protocol Blt Video to Buffer operation
399 with extended parameters.
400
401 @param[out] BltBuffer Output buffer for pixel color data
402 @param[in] SourceX X location within video
403 @param[in] SourceY Y location within video
404 @param[in] DestinationX X location within BltBuffer
405 @param[in] DestinationY Y location within BltBuffer
406 @param[in] Width Width (in pixels)
407 @param[in] Height Height
408 @param[in] Delta Number of bytes in a row of BltBuffer
409
410 @retval EFI_DEVICE_ERROR - A hardware error occured
411 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
412 @retval EFI_SUCCESS - The sizes were returned
413
414 **/
415 EFI_STATUS
416 EFIAPI
417 BltLibVideoToBltBufferEx (
418 OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
419 IN UINTN SourceX,
420 IN UINTN SourceY,
421 IN UINTN DestinationX,
422 IN UINTN DestinationY,
423 IN UINTN Width,
424 IN UINTN Height,
425 IN UINTN Delta
426 )
427 {
428 UINTN DstY;
429 UINTN SrcY;
430 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
431 VOID *BltMemSrc;
432 VOID *BltMemDst;
433 UINTN X;
434 UINT32 Uint32;
435 UINTN Offset;
436 UINTN WidthInBytes;
437
438 //
439 // Video to BltBuffer: Source is Video, destination is BltBuffer
440 //
441 if (SourceY + Height > mBltLibHeight) {
442 return EFI_INVALID_PARAMETER;
443 }
444
445 if (SourceX + Width > mBltLibWidthInPixels) {
446 return EFI_INVALID_PARAMETER;
447 }
448
449 if (Width == 0 || Height == 0) {
450 return EFI_INVALID_PARAMETER;
451 }
452
453 //
454 // If Delta is zero, then the entire BltBuffer is being used, so Delta
455 // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,
456 // the number of bytes in each row can be computed.
457 //
458 if (Delta == 0) {
459 Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
460 }
461
462 WidthInBytes = Width * mBltLibBytesPerPixel;
463
464 //
465 // Video to BltBuffer: Source is Video, destination is BltBuffer
466 //
467 for (SrcY = SourceY, DstY = DestinationY; DstY < (Height + DestinationY); SrcY++, DstY++) {
468
469 Offset = (SrcY * mBltLibWidthInPixels) + SourceX;
470 Offset = mBltLibBytesPerPixel * Offset;
471 BltMemSrc = (VOID *) (mBltLibFrameBuffer + Offset);
472
473 if (mPixelFormat == PixelBlueGreenRedReserved8BitPerColor) {
474 BltMemDst =
475 (VOID *) (
476 (UINT8 *) BltBuffer +
477 (DstY * Delta) +
478 (DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
479 );
480 } else {
481 BltMemDst = (VOID *) mBltLibLineBuffer;
482 }
483
484 CopyMem (BltMemDst, BltMemSrc, WidthInBytes);
485
486 if (mPixelFormat != PixelBlueGreenRedReserved8BitPerColor) {
487 for (X = 0; X < Width; X++) {
488 Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) ((UINT8 *) BltBuffer + (DstY * Delta) + (DestinationX + X) * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
489 Uint32 = *(UINT32*) (mBltLibLineBuffer + (X * mBltLibBytesPerPixel));
490 *(UINT32*) Blt =
491 (UINT32) (
492 (((Uint32 & mPixelBitMasks.RedMask) >> mPixelShl[0]) << mPixelShr[0]) |
493 (((Uint32 & mPixelBitMasks.GreenMask) >> mPixelShl[1]) << mPixelShr[1]) |
494 (((Uint32 & mPixelBitMasks.BlueMask) >> mPixelShl[2]) << mPixelShr[2])
495 );
496 }
497 }
498 }
499
500 return EFI_SUCCESS;
501 }
502
503
504 /**
505 Performs a UEFI Graphics Output Protocol Blt Buffer to Video operation.
506
507 @param[in] BltBuffer Output buffer for pixel color data
508 @param[in] DestinationX X location within video
509 @param[in] DestinationY Y location within video
510 @param[in] Width Width (in pixels)
511 @param[in] Height Height
512
513 @retval EFI_DEVICE_ERROR - A hardware error occured
514 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
515 @retval EFI_SUCCESS - The sizes were returned
516
517 **/
518 EFI_STATUS
519 EFIAPI
520 BltLibBufferToVideo (
521 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
522 IN UINTN DestinationX,
523 IN UINTN DestinationY,
524 IN UINTN Width,
525 IN UINTN Height
526 )
527 {
528 return BltLibBufferToVideoEx (
529 BltBuffer,
530 0,
531 0,
532 DestinationX,
533 DestinationY,
534 Width,
535 Height,
536 0
537 );
538 }
539
540
541 /**
542 Performs a UEFI Graphics Output Protocol Blt Buffer to Video operation
543 with extended parameters.
544
545 @param[in] BltBuffer Output buffer for pixel color data
546 @param[in] SourceX X location within BltBuffer
547 @param[in] SourceY Y location within BltBuffer
548 @param[in] DestinationX X location within video
549 @param[in] DestinationY Y location within video
550 @param[in] Width Width (in pixels)
551 @param[in] Height Height
552 @param[in] Delta Number of bytes in a row of BltBuffer
553
554 @retval EFI_DEVICE_ERROR - A hardware error occured
555 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
556 @retval EFI_SUCCESS - The sizes were returned
557
558 **/
559 EFI_STATUS
560 EFIAPI
561 BltLibBufferToVideoEx (
562 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer,
563 IN UINTN SourceX,
564 IN UINTN SourceY,
565 IN UINTN DestinationX,
566 IN UINTN DestinationY,
567 IN UINTN Width,
568 IN UINTN Height,
569 IN UINTN Delta
570 )
571 {
572 UINTN DstY;
573 UINTN SrcY;
574 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
575 VOID *BltMemSrc;
576 VOID *BltMemDst;
577 UINTN X;
578 UINT32 Uint32;
579 UINTN Offset;
580 UINTN WidthInBytes;
581
582 //
583 // BltBuffer to Video: Source is BltBuffer, destination is Video
584 //
585 if (DestinationY + Height > mBltLibHeight) {
586 return EFI_INVALID_PARAMETER;
587 }
588
589 if (DestinationX + Width > mBltLibWidthInPixels) {
590 return EFI_INVALID_PARAMETER;
591 }
592
593 if (Width == 0 || Height == 0) {
594 return EFI_INVALID_PARAMETER;
595 }
596
597 //
598 // If Delta is zero, then the entire BltBuffer is being used, so Delta
599 // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,
600 // the number of bytes in each row can be computed.
601 //
602 if (Delta == 0) {
603 Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
604 }
605
606 WidthInBytes = Width * mBltLibBytesPerPixel;
607
608 for (SrcY = SourceY, DstY = DestinationY; SrcY < (Height + SourceY); SrcY++, DstY++) {
609
610 Offset = (DstY * mBltLibWidthInPixels) + DestinationX;
611 Offset = mBltLibBytesPerPixel * Offset;
612 BltMemDst = (VOID*) (mBltLibFrameBuffer + Offset);
613
614 if (mPixelFormat == PixelBlueGreenRedReserved8BitPerColor) {
615 BltMemSrc = (VOID *) ((UINT8 *) BltBuffer + (SrcY * Delta));
616 } else {
617 for (X = 0; X < Width; X++) {
618 Blt =
619 (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) (
620 (UINT8 *) BltBuffer +
621 (SrcY * Delta) +
622 ((SourceX + X) * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))
623 );
624 Uint32 = *(UINT32*) Blt;
625 *(UINT32*) (mBltLibLineBuffer + (X * mBltLibBytesPerPixel)) =
626 (UINT32) (
627 (((Uint32 << mPixelShl[0]) >> mPixelShr[0]) & mPixelBitMasks.RedMask) |
628 (((Uint32 << mPixelShl[1]) >> mPixelShr[1]) & mPixelBitMasks.GreenMask) |
629 (((Uint32 << mPixelShl[2]) >> mPixelShr[2]) & mPixelBitMasks.BlueMask)
630 );
631 }
632 BltMemSrc = (VOID *) mBltLibLineBuffer;
633 }
634
635 CopyMem (BltMemDst, BltMemSrc, WidthInBytes);
636 }
637
638 return EFI_SUCCESS;
639 }
640
641
642 /**
643 Performs a UEFI Graphics Output Protocol Blt Video to Video operation
644
645 @param[in] SourceX X location within video
646 @param[in] SourceY Y location within video
647 @param[in] DestinationX X location within video
648 @param[in] DestinationY Y location within video
649 @param[in] Width Width (in pixels)
650 @param[in] Height Height
651
652 @retval EFI_DEVICE_ERROR - A hardware error occured
653 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
654 @retval EFI_SUCCESS - The sizes were returned
655
656 **/
657 EFI_STATUS
658 EFIAPI
659 BltLibVideoToVideo (
660 IN UINTN SourceX,
661 IN UINTN SourceY,
662 IN UINTN DestinationX,
663 IN UINTN DestinationY,
664 IN UINTN Width,
665 IN UINTN Height
666 )
667 {
668 VOID *BltMemSrc;
669 VOID *BltMemDst;
670 UINTN Offset;
671 UINTN WidthInBytes;
672 INTN LineStride;
673
674 //
675 // Video to Video: Source is Video, destination is Video
676 //
677 if (SourceY + Height > mBltLibHeight) {
678 return EFI_INVALID_PARAMETER;
679 }
680
681 if (SourceX + Width > mBltLibWidthInPixels) {
682 return EFI_INVALID_PARAMETER;
683 }
684
685 if (DestinationY + Height > mBltLibHeight) {
686 return EFI_INVALID_PARAMETER;
687 }
688
689 if (DestinationX + Width > mBltLibWidthInPixels) {
690 return EFI_INVALID_PARAMETER;
691 }
692
693 if (Width == 0 || Height == 0) {
694 return EFI_INVALID_PARAMETER;
695 }
696
697 WidthInBytes = Width * mBltLibBytesPerPixel;
698
699 Offset = (SourceY * mBltLibWidthInPixels) + SourceX;
700 Offset = mBltLibBytesPerPixel * Offset;
701 BltMemSrc = (VOID *) (mBltLibFrameBuffer + Offset);
702
703 Offset = (DestinationY * mBltLibWidthInPixels) + DestinationX;
704 Offset = mBltLibBytesPerPixel * Offset;
705 BltMemDst = (VOID *) (mBltLibFrameBuffer + Offset);
706
707 LineStride = mBltLibWidthInBytes;
708 if ((UINTN) BltMemDst > (UINTN) BltMemSrc) {
709 LineStride = -LineStride;
710 }
711
712 while (Height > 0) {
713 CopyMem (BltMemDst, BltMemSrc, WidthInBytes);
714
715 BltMemSrc = (VOID*) ((UINT8*) BltMemSrc + LineStride);
716 BltMemDst = (VOID*) ((UINT8*) BltMemDst + LineStride);
717 Height--;
718 }
719
720 return EFI_SUCCESS;
721 }
722
723
724 /**
725 Returns the sizes related to the video device
726
727 @param[out] Width Width (in pixels)
728 @param[out] Height Height (in pixels)
729
730 @retval EFI_INVALID_PARAMETER - Invalid parameter passed in
731 @retval EFI_SUCCESS - The sizes were returned
732
733 **/
734 EFI_STATUS
735 EFIAPI
736 BltLibGetSizes (
737 OUT UINTN *Width, OPTIONAL
738 OUT UINTN *Height OPTIONAL
739 )
740 {
741 if (Width != NULL) {
742 *Width = mBltLibWidthInPixels;
743 }
744 if (Height != NULL) {
745 *Height = mBltLibHeight;
746 }
747
748 return EFI_SUCCESS;
749 }
750
EFI Development Kit II mirror for PVE