ReactOS 0.4.15-dev-7788-g1ad9096
common.c
Go to the documentation of this file.
1#include "precomp.h"
2
3/* GLOBALS ********************************************************************/
4
6
9
11{
12 0,
13 0,
14 SCREEN_WIDTH - 1,
16};
17
18/*
19 * Boot video driver default palette is similar to the standard 16-color
20 * CGA palette, but it has Red and Blue channels swapped, and also dark
21 * and light gray colors swapped.
22 */
24{
25 RGB( 0, 0, 0), /* Black */
26 RGB(128, 0, 0), /* Red */
27 RGB( 0, 128, 0), /* Green */
28 RGB(128, 128, 0), /* Brown */
29 RGB( 0, 0, 128), /* Blue */
30 RGB(128, 0, 128), /* Magenta */
31 RGB( 0, 128, 128), /* Cyan */
32 RGB(128, 128, 128), /* Dark Gray */
33 RGB(192, 192, 192), /* Light Gray */
34 RGB(255, 0, 0), /* Light Red */
35 RGB( 0, 255, 0), /* Light Green */
36 RGB(255, 255, 0), /* Yellow */
37 RGB( 0, 0, 255), /* Light Blue */
38 RGB(255, 0, 255), /* Light Magenta */
39 RGB( 0, 255, 255), /* Light Cyan */
40 RGB(255, 255, 255), /* White */
41};
42
44
45/* PRIVATE FUNCTIONS **********************************************************/
46
47static VOID
50 _In_ ULONG Left,
55 _In_ ULONG BitsPerPixel,
57{
58 ULONG X, Y, Pixel;
61 const ULONG Bottom = Top + Height;
62 const ULONG Right = Left + Width;
63
64 /* Check if the buffer isn't 4bpp */
65 if (BitsPerPixel != 4)
66 {
67 /* FIXME: TODO */
68 DbgPrint("Unhandled BitBlt\n"
69 "%lux%lu @ (%lu|%lu)\n"
70 "Bits Per Pixel %lu\n"
71 "Buffer: %p. Delta: %lu\n",
72 Width,
73 Height,
74 Left,
75 Top,
76 BitsPerPixel,
77 Buffer,
78 Delta);
79 return;
80 }
81
83
84 /* 4bpp blitting */
85 for (Y = Top; Y < Bottom; ++Y)
86 {
88
89 for (X = Left, Pixel = 0;
90 X < Right;
91 ++X, ++Pixel)
92 {
93 if (Pixel % 2 == 0)
94 {
95 /* Extract colors at every two pixels */
97
98 SetPixel(X, Y, Colors >> 4);
99 }
100 else
101 {
102 SetPixel(X, Y, Colors & 0x0F);
103 }
104 }
105
106 Buffer += Delta;
107 }
108}
109
110static VOID
111NTAPI
113 _In_ ULONG Left,
114 _In_ ULONG Top,
118{
119 ULONG YDelta;
120 ULONG x;
121 ULONG RleValue, NewRleValue;
122 ULONG Color, Color2;
123 ULONG i, j;
124 ULONG Code;
125
127
128 /* Set Y height and current X value and start loop */
129 YDelta = Top + Height - 1;
130 x = Left;
131 for (;;)
132 {
133 /* Get the current value and advance in the buffer */
134 RleValue = *Buffer;
135 Buffer++;
136 if (RleValue)
137 {
138 /* Check if we've gone past the edge */
139 if ((x + RleValue) > (Width + Left))
140 {
141 /* Fixup the pixel value */
142 RleValue = Left - x + Width;
143 }
144
145 /* Get the new value */
146 NewRleValue = *Buffer;
147
148 /* Get the two colors */
149 Color = NewRleValue >> 4;
150 Color2 = NewRleValue & 0xF;
151
152 /* Increase buffer position */
153 Buffer++;
154
155 /* Check if we need to do a fill */
156 if (Color == Color2)
157 {
158 /* Do a fill and continue the loop */
159 RleValue += x;
160 VidSolidColorFill(x, YDelta, RleValue - 1, YDelta, (UCHAR)Color);
161 x = RleValue;
162 continue;
163 }
164
165 /* Check if the pixel value is 1 or below */
166 if (RleValue > 1)
167 {
168 /* Set loop variables */
169 for (i = (RleValue - 2) / 2 + 1; i > 0; --i)
170 {
171 /* Set the pixels */
172 SetPixel(x, YDelta, (UCHAR)Color);
173 x++;
174 SetPixel(x, YDelta, (UCHAR)Color2);
175 x++;
176
177 /* Decrease pixel value */
178 RleValue -= 2;
179 }
180 }
181
182 /* Check if there is any value at all */
183 if (RleValue)
184 {
185 /* Set the pixel and increase position */
186 SetPixel(x, YDelta, (UCHAR)Color);
187 x++;
188 }
189
190 /* Start over */
191 continue;
192 }
193
194 /* Get the current pixel value */
195 RleValue = *Buffer;
196 Code = RleValue;
197 switch (Code)
198 {
199 /* Case 0 */
200 case 0:
201 {
202 /* Set new x value, decrease distance and restart */
203 x = Left;
204 YDelta--;
205 Buffer++;
206 continue;
207 }
208
209 /* Case 1 */
210 case 1:
211 {
212 /* Done */
213 return;
214 }
215
216 /* Case 2 */
217 case 2:
218 {
219 /* Set new x value, decrease distance and restart */
220 Buffer++;
221 x += *Buffer;
222 Buffer++;
223 YDelta -= *Buffer;
224 Buffer++;
225 continue;
226 }
227
228 /* Other values */
229 default:
230 {
231 Buffer++;
232 break;
233 }
234 }
235
236 /* Check if we've gone past the edge */
237 if ((x + RleValue) > (Width + Left))
238 {
239 /* Set fixed up loop count */
240 i = RleValue - Left - Width + x;
241
242 /* Fixup pixel value */
243 RleValue -= i;
244 }
245 else
246 {
247 /* Clear loop count */
248 i = 0;
249 }
250
251 /* Check the value now */
252 if (RleValue > 1)
253 {
254 /* Set loop variables */
255 for (j = (RleValue - 2) / 2 + 1; j > 0; --j)
256 {
257 /* Get the new value */
258 NewRleValue = *Buffer;
259
260 /* Get the two colors */
261 Color = NewRleValue >> 4;
262 Color2 = NewRleValue & 0xF;
263
264 /* Increase buffer position */
265 Buffer++;
266
267 /* Set the pixels */
268 SetPixel(x, YDelta, (UCHAR)Color);
269 x++;
270 SetPixel(x, YDelta, (UCHAR)Color2);
271 x++;
272
273 /* Decrease pixel value */
274 RleValue -= 2;
275 }
276 }
277
278 /* Check if there is any value at all */
279 if (RleValue)
280 {
281 /* Set the pixel and increase position */
282 Color = *Buffer >> 4;
283 Buffer++;
284 SetPixel(x, YDelta, (UCHAR)Color);
285 x++;
286 i--;
287 }
288
289 /* Check loop count now */
290 if ((LONG)i > 0)
291 {
292 /* Decrease it */
293 i--;
294
295 /* Set new position */
296 Buffer = Buffer + (i / 2) + 1;
297 }
298
299 /* Check if we need to increase the buffer */
300 if ((ULONG_PTR)Buffer & 1) Buffer++;
301 }
302}
303
304/* PUBLIC FUNCTIONS ***********************************************************/
305
306/*
307 * @implemented
308 */
309ULONG
310NTAPI
313{
314 ULONG OldColor;
315
316 /* Save the old color and set the new one */
317 OldColor = VidpTextColor;
319 return OldColor;
320}
321
322VOID
323NTAPI
326 _In_ ULONG Left,
327 _In_ ULONG Top,
328 _In_ BOOLEAN Transparent)
329{
330 ULONG BackColor;
331
332 /*
333 * If the caller wanted transparent, then send the special value (16),
334 * else use our default and call the helper routine.
335 */
336 BackColor = Transparent ? BV_COLOR_NONE : BV_COLOR_LIGHT_CYAN;
337
338 /* Loop every character and adjust the position */
339 for (; *String; ++String, Left += BOOTCHAR_WIDTH)
340 {
341 /* Display a character */
342 DisplayCharacter(*String, Left, Top, BV_COLOR_LIGHT_BLUE, BackColor);
343 }
344}
345
346VOID
347NTAPI
349 _In_ ULONG Left,
350 _In_ ULONG Top,
351 _In_ ULONG Right,
353{
354 /* Assert alignment */
355 ASSERT((Left % BOOTCHAR_WIDTH) == 0);
356 ASSERT((Right % BOOTCHAR_WIDTH) == BOOTCHAR_WIDTH - 1);
357
358 /* Set Scroll Region */
359 VidpScrollRegion[0] = Left;
361 VidpScrollRegion[2] = Right;
363
364 /* Set current X and Y */
365 VidpCurrentX = Left;
367}
368
369/*
370 * @implemented
371 */
372VOID
373NTAPI
376{
377 /* Start looping the string */
378 for (; *String; ++String)
379 {
380 /* Treat new-line separately */
381 if (*String == '\n')
382 {
383 /* Modify Y position */
386 {
387 /* Scroll the view and clear the current row */
391 }
392 else
393 {
394 /* Preserve the current row */
396 }
397
398 /* Update current X */
400
401 /* No need to clear this row */
402 ClearRow = FALSE;
403 }
404 else if (*String == '\r')
405 {
406 /* Update current X */
408
409 /* If a new-line does not follow we will clear the current row */
410 if (String[1] != '\n') ClearRow = TRUE;
411 }
412 else
413 {
414 /* Clear the current row if we had a return-carriage without a new-line */
415 if (ClearRow)
416 {
418 ClearRow = FALSE;
419 }
420
421 /* Display this character */
424
425 /* Check if we should scroll */
427 {
428 /* Update Y position and check if we should scroll it */
431 {
432 /* Scroll the view and clear the current row */
436 }
437 else
438 {
439 /* Preserve the current row */
441 }
442
443 /* Update current X */
445 }
446 }
447 }
448}
449
450VOID
451NTAPI
454 _In_ ULONG Left,
455 _In_ ULONG Top,
459{
460 /* Make sure we have a width and height */
461 if (!Width || !Height)
462 return;
463
464 /* Call the helper function */
465 BitBlt(Left, Top, Width, Height, Buffer, 4, Delta);
466}
467
468VOID
469NTAPI
472 _In_ ULONG Left,
473 _In_ ULONG Top)
474{
475 PBITMAPINFOHEADER BitmapInfoHeader;
476 LONG Delta;
477 PUCHAR BitmapOffset;
478 ULONG PaletteCount;
479
480 /* Get the Bitmap Header */
481 BitmapInfoHeader = (PBITMAPINFOHEADER)Buffer;
482
483 /* Initialize the palette */
484 PaletteCount = BitmapInfoHeader->biClrUsed ?
485 BitmapInfoHeader->biClrUsed : BV_MAX_COLORS;
486 InitPaletteWithTable((PULONG)(Buffer + BitmapInfoHeader->biSize),
487 PaletteCount);
488
489 /* Make sure we can support this bitmap */
490 ASSERT((BitmapInfoHeader->biBitCount * BitmapInfoHeader->biPlanes) <= 4);
491
492 /*
493 * Calculate the delta and align it on 32-bytes, then calculate
494 * the actual start of the bitmap data.
495 */
496 Delta = (BitmapInfoHeader->biBitCount * BitmapInfoHeader->biWidth) + 31;
497 Delta >>= 3;
498 Delta &= ~3;
499 BitmapOffset = Buffer + sizeof(BITMAPINFOHEADER) + PaletteCount * sizeof(ULONG);
500
501 /* Check the compression of the bitmap */
502 if (BitmapInfoHeader->biCompression == BI_RLE4)
503 {
504 /* Make sure we have a width and a height */
505 if ((BitmapInfoHeader->biWidth) && (BitmapInfoHeader->biHeight))
506 {
507 /* We can use RLE Bit Blt */
508 RleBitBlt(Left,
509 Top,
510 BitmapInfoHeader->biWidth,
511 BitmapInfoHeader->biHeight,
512 BitmapOffset);
513 }
514 }
515 else
516 {
517 /* Check if the height is negative */
518 if (BitmapInfoHeader->biHeight < 0)
519 {
520 /* Make it positive in the header */
521 BitmapInfoHeader->biHeight *= -1;
522 }
523 else
524 {
525 /* Update buffer offset */
526 BitmapOffset += ((BitmapInfoHeader->biHeight - 1) * Delta);
527 Delta *= -1;
528 }
529
530 /* Make sure we have a width and a height */
531 if ((BitmapInfoHeader->biWidth) && (BitmapInfoHeader->biHeight))
532 {
533 /* Do the BitBlt */
534 BitBlt(Left,
535 Top,
536 BitmapInfoHeader->biWidth,
537 BitmapInfoHeader->biHeight,
538 BitmapOffset,
539 BitmapInfoHeader->biBitCount,
540 Delta);
541 }
542 }
543}
unsigned char BOOLEAN
Colors
Definition: ansiprsr.h:4
VOID NTAPI VidSolidColorFill(_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Right, _In_ ULONG Bottom, _In_ UCHAR Color)
Definition: bootvid.c:274
VOID NTAPI DoScroll(_In_ ULONG Scroll)
Definition: bootvid.c:59
VOID NTAPI PreserveRow(_In_ ULONG CurrentTop, _In_ ULONG TopDelta, _In_ BOOLEAN Restore)
Definition: bootvid.c:107
VOID NTAPI InitPaletteWithTable(_In_ PULONG Table, _In_ ULONG Count)
Definition: bootvid.c:170
FORCEINLINE VOID SetPixel(_In_ ULONG Left, _In_ ULONG Top, _In_ UCHAR Color)
Definition: arm.h:50
VOID NTAPI DisplayCharacter(_In_ CHAR Character, _In_ ULONG Left, _In_ ULONG Top, _In_ ULONG TextColor, _In_ ULONG BackColor)
Definition: bootvid.c:13
static LPHIST_ENTRY Bottom
Definition: history.c:54
static LPHIST_ENTRY Top
Definition: history.c:53
Definition: bufpool.h:45
#define Code
Definition: deflate.h:80
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define Y(I)
VOID NTAPI VidBitBlt(_In_ PUCHAR Buffer, _In_ ULONG Left, _In_ ULONG Top)
Definition: common.c:470
const RGBQUAD VidpDefaultPalette[BV_MAX_COLORS]
Definition: common.c:23
ULONG NTAPI VidSetTextColor(_In_ ULONG Color)
Definition: common.c:311
UCHAR VidpTextColor
Definition: common.c:5
static VOID NTAPI RleBitBlt(_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Width, _In_ ULONG Height, _In_ PUCHAR Buffer)
Definition: common.c:112
ULONG VidpCurrentY
Definition: common.c:8
VOID NTAPI VidDisplayStringXY(_In_z_ PUCHAR String, _In_ ULONG Left, _In_ ULONG Top, _In_ BOOLEAN Transparent)
Definition: common.c:324
VOID NTAPI VidBufferToScreenBlt(_In_reads_bytes_(Delta *Height) PUCHAR Buffer, _In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Width, _In_ ULONG Height, _In_ ULONG Delta)
Definition: common.c:452
ULONG VidpCurrentX
Definition: common.c:7
static VOID NTAPI BitBlt(_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Width, _In_ ULONG Height, _In_reads_bytes_(Delta *Height) PUCHAR Buffer, _In_ ULONG BitsPerPixel, _In_ ULONG Delta)
Definition: common.c:49
VOID NTAPI VidDisplayString(_In_z_ PUCHAR String)
Definition: common.c:374
VOID NTAPI VidSetScrollRegion(_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Right, _In_ ULONG Bottom)
Definition: common.c:348
ULONG VidpScrollRegion[4]
Definition: common.c:10
static BOOLEAN ClearRow
Definition: common.c:43
#define BI_RLE4
Definition: precomp.h:48
struct tagBITMAPINFOHEADER * PBITMAPINFOHEADER
#define RGB(r, g, b)
Definition: precomp.h:62
ULONG RGBQUAD
Definition: precomp.h:50
#define BOOTCHAR_HEIGHT
Definition: precomp.h:27
#define BOOTCHAR_WIDTH
Definition: precomp.h:28
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
#define DbgPrint
Definition: hal.h:12
#define X(b, s)
#define ASSERT(a)
Definition: mode.c:44
#define _In_reads_bytes_(size)
Definition: ms_sal.h:321
#define _In_z_
Definition: ms_sal.h:313
#define _In_
Definition: ms_sal.h:308
#define SCREEN_WIDTH
Definition: pc98video.c:27
#define SCREEN_HEIGHT
Definition: pc98video.c:28
VOID PrepareForSetPixel(VOID)
Definition: vga.c:81
long LONG
Definition: pedump.c:60
#define BV_COLOR_WHITE
Definition: display.h:30
#define BV_COLOR_LIGHT_CYAN
Definition: display.h:29
#define BV_COLOR_LIGHT_BLUE
Definition: display.h:27
#define BV_COLOR_NONE
Definition: display.h:31
#define BV_MAX_COLORS
Definition: display.h:32
USHORT biBitCount
Definition: precomp.h:37
ULONG biCompression
Definition: precomp.h:38
uint32_t * PULONG
Definition: typedefs.h:59
#define NTAPI
Definition: typedefs.h:36
uint32_t ULONG_PTR
Definition: typedefs.h:65
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
_In_ HFONT _Out_ PUINT _Out_ PUINT Width
Definition: font.h:89
_In_ HFONT _Out_ PUINT Height
Definition: font.h:88
_In_ UCHAR _In_ UCHAR _In_ ULONG Code
Definition: wdfdevice.h:1701
_Must_inspect_result_ _In_ WDFDEVICE _In_ WDFSTRING String
Definition: wdfdevice.h:2433
_Must_inspect_result_ _In_ WDFIOTARGET _In_opt_ WDFREQUEST _In_opt_ PWDF_MEMORY_DESCRIPTOR InputBuffer
Definition: wdfiotarget.h:953
static ULONG Delta
Definition: xboxvideo.c:33
unsigned char UCHAR
Definition: xmlstorage.h:181