source: mainline/fb/fb.c@ 49d072e

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 49d072e was 49d072e, checked in by Ondrej Palkovsky <ondrap@…>, 19 years ago

Added blinking cursor.
  • Property mode set to 100644
File size: 16.5 KB
Line 
1/*
2 * Copyright (C) 2006 Jakub Vana
3 * Copyright (C) 2006 Ondrej Palkovsky
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ddi.h>
34#include <sysinfo.h>
35#include <align.h>
36#include <as.h>
37#include <ipc/fb.h>
38#include <ipc/ipc.h>
39#include <ipc/ns.h>
40#include <ipc/services.h>
41#include <kernel/errno.h>
42#include <async.h>
43#include "font-8x16.h"
44#include "helenos.xbm"
45#include "fb.h"
46
47#define DEFAULT_BGCOLOR 0x000080
48#define DEFAULT_FGCOLOR 0xffff00
49
50/***************************************************************/
51/* Pixel specific fuctions */
52
53typedef void (*putpixel_fn_t)(unsigned int x, unsigned int y, int color);
54typedef int (*getpixel_fn_t)(unsigned int x, unsigned int y);
55
56struct {
57 __u8 *fbaddress ;
58
59 unsigned int xres ;
60 unsigned int yres ;
61 unsigned int scanline ;
62 unsigned int pixelbytes ;
63
64 putpixel_fn_t putpixel;
65 getpixel_fn_t getpixel;
66} screen;
67
68typedef struct {
69 int initialized;
70 unsigned int x, y;
71 unsigned int width, height;
72
73 /* Text support in window */
74 unsigned int rows, cols;
75 /* Style for text printing */
76 int bgcolor, fgcolor;
77 /* Auto-cursor position */
78 int cursor_active, cur_col, cur_row;
79 int cursor_shown;
80} viewport_t;
81
82#define MAX_VIEWPORTS 128
83static viewport_t viewports[128];
84
85/* Allow only 1 connection */
86static int client_connected = 0;
87
88#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
89#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
90#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
91
92#define COL_WIDTH 8
93#define ROW_BYTES (screen.scanline * FONT_SCANLINES)
94
95#define POINTPOS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
96
97/** Put pixel - 24-bit depth, 1 free byte */
98static void putpixel_4byte(unsigned int x, unsigned int y, int color)
99{
100 *((__u32 *)(screen.fbaddress + POINTPOS(x, y))) = color;
101}
102
103/** Return pixel color - 24-bit depth, 1 free byte */
104static int getpixel_4byte(unsigned int x, unsigned int y)
105{
106 return *((__u32 *)(screen.fbaddress + POINTPOS(x, y))) & 0xffffff;
107}
108
109/** Put pixel - 24-bit depth */
110static void putpixel_3byte(unsigned int x, unsigned int y, int color)
111{
112 unsigned int startbyte = POINTPOS(x, y);
113
114#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
115 screen.fbaddress[startbyte] = RED(color, 8);
116 screen.fbaddress[startbyte + 1] = GREEN(color, 8);
117 screen.fbaddress[startbyte + 2] = BLUE(color, 8);
118#else
119 screen.fbaddress[startbyte + 2] = RED(color, 8);
120 screen.fbaddress[startbyte + 1] = GREEN(color, 8);
121 screen.fbaddress[startbyte + 0] = BLUE(color, 8);
122#endif
123
124}
125
126/** Return pixel color - 24-bit depth */
127static int getpixel_3byte(unsigned int x, unsigned int y)
128{
129 unsigned int startbyte = POINTPOS(x, y);
130
131
132
133#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
134 return screen.fbaddress[startbyte] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 2];
135#else
136 return screen.fbaddress[startbyte + 2] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 0];
137#endif
138
139
140}
141
142/** Put pixel - 16-bit depth (5:6:5) */
143static void putpixel_2byte(unsigned int x, unsigned int y, int color)
144{
145 /* 5-bit, 6-bits, 5-bits */
146 *((__u16 *)(screen.fbaddress + POINTPOS(x, y))) = RED(color, 5) << 11 | GREEN(color, 6) << 5 | BLUE(color, 5);
147}
148
149/** Return pixel color - 16-bit depth (5:6:5) */
150static int getpixel_2byte(unsigned int x, unsigned int y)
151{
152 int color = *((__u16 *)(screen.fbaddress + POINTPOS(x, y)));
153 return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
154}
155
156/** Put pixel - 8-bit depth (3:2:3) */
157static void putpixel_1byte(unsigned int x, unsigned int y, int color)
158{
159 screen.fbaddress[POINTPOS(x, y)] = RED(color, 3) << 5 | GREEN(color, 2) << 3 | BLUE(color, 3);
160}
161
162/** Return pixel color - 8-bit depth (3:2:3) */
163static int getpixel_1byte(unsigned int x, unsigned int y)
164{
165 int color = screen.fbaddress[POINTPOS(x, y)];
166 return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
167}
168
169/** Put pixel into viewport
170 *
171 * @param vp Viewport identification
172 * @param x X coord relative to viewport
173 * @param y Y coord relative to viewport
174 * @param color RGB color
175 */
176static void putpixel(int vp, unsigned int x, unsigned int y, int color)
177{
178 screen.putpixel(viewports[vp].x + x, viewports[vp].y + y, color);
179}
180/** Get pixel from viewport */
181static int getpixel(int vp, unsigned int x, unsigned int y)
182{
183 return screen.getpixel(viewports[vp].x + x, viewports[vp].y + y);
184}
185
186/** Fill line with color BGCOLOR */
187static void clear_line(int vp, unsigned int y)
188{
189 unsigned int x;
190 for (x = 0; x < viewports[vp].width; x++)
191 putpixel(vp, x, y, viewports[vp].bgcolor);
192}
193
194/** Fill viewport with background color */
195static void clear_port(int vp)
196{
197 unsigned int y;
198
199 clear_line(vp, 0);
200 for (y = viewports[vp].y+1; y < viewports[vp].y+viewports[vp].height; y++) {
201 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
202 &screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
203 screen.pixelbytes * viewports[vp].width);
204 }
205}
206
207/** Scroll port up/down
208 *
209 * @param vp Viewport to scroll
210 * @param rows Positive number - scroll up, negative - scroll down
211 */
212static void scroll_port(int vp, int rows)
213{
214 int y;
215 int startline;
216 int endline;
217
218 if (rows > 0) {
219 for (y=viewports[vp].y; y < viewports[vp].y+viewports[vp].height - rows*FONT_SCANLINES; y++)
220 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
221 &screen.fbaddress[POINTPOS(viewports[vp].x,y + rows*FONT_SCANLINES)],
222 screen.pixelbytes * viewports[vp].width);
223 /* Clear last row */
224 startline = viewports[vp].y+FONT_SCANLINES*(viewports[vp].rows-1);
225 endline = viewports[vp].y + viewports[vp].height;
226 clear_line(vp, startline);
227 for (y=startline+1;y < endline; y++)
228 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
229 &screen.fbaddress[POINTPOS(viewports[vp].x,startline)],
230 screen.pixelbytes * viewports[vp].width);
231
232 } else if (rows < 0) {
233 rows = -rows;
234 for (y=viewports[vp].y + viewports[vp].height-1; y >= viewports[vp].y + rows*FONT_SCANLINES; y--)
235 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
236 &screen.fbaddress[POINTPOS(viewports[vp].x,y - rows*FONT_SCANLINES)],
237 screen.pixelbytes * viewports[vp].width);
238 /* Clear first row */
239 clear_line(0, viewports[vp].bgcolor);
240 for (y=1;y < rows*FONT_SCANLINES; y++)
241 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y+y)],
242 &screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
243 screen.pixelbytes * viewports[vp].width);
244 }
245}
246
247static void invert_pixel(int vp,unsigned int x, unsigned int y)
248{
249 putpixel(vp, x, y, ~getpixel(vp, x, y));
250}
251
252
253/** Draw one line of glyph at a given position */
254static void draw_glyph_line(int vp,unsigned int glline, unsigned int x, unsigned int y)
255{
256 unsigned int i;
257
258 for (i = 0; i < 8; i++)
259 if (glline & (1 << (7 - i))) {
260 putpixel(vp, x + i, y, viewports[vp].fgcolor);
261 } else
262 putpixel(vp, x + i, y, viewports[vp].bgcolor);
263}
264
265/***************************************************************/
266/* Character-console functions */
267
268/** Draw character at given position */
269static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy)
270{
271 unsigned int y;
272
273 for (y = 0; y < FONT_SCANLINES; y++)
274 draw_glyph_line(vp ,fb_font[glyph * FONT_SCANLINES + y], sx, sy + y);
275}
276
277/** Invert character at given position */
278static void invert_char(int vp,unsigned int row, unsigned int col)
279{
280 unsigned int x;
281 unsigned int y;
282
283 for (x = 0; x < COL_WIDTH; x++)
284 for (y = 0; y < FONT_SCANLINES; y++)
285 invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);
286}
287
288static void draw_logo(int vp,unsigned int startx, unsigned int starty)
289{
290 unsigned int x;
291 unsigned int y;
292 unsigned int byte;
293 unsigned int rowbytes;
294
295 rowbytes = (helenos_width - 1) / 8 + 1;
296
297 for (y = 0; y < helenos_height; y++)
298 for (x = 0; x < helenos_width; x++) {
299 byte = helenos_bits[rowbytes * y + x / 8];
300 byte >>= x % 8;
301 if (byte & 1)
302 putpixel(vp ,startx + x, starty + y, viewports[vp].fgcolor);
303 }
304}
305
306/***************************************************************/
307/* Stdout specific functions */
308
309
310/** Create new viewport
311 *
312 * @return New viewport number
313 */
314static int viewport_create(unsigned int x, unsigned int y,unsigned int width,
315 unsigned int height)
316{
317 int i;
318
319for (i=0; i < MAX_VIEWPORTS; i++) {
320 if (!viewports[i].initialized)
321 break;
322 }
323 if (i == MAX_VIEWPORTS)
324 return ELIMIT;
325
326 if (width ==0 || height == 0 ||
327 x+width > screen.xres || y+height > screen.yres)
328 return EINVAL;
329 if (width < FONT_SCANLINES || height < COL_WIDTH)
330 return EINVAL;
331
332 viewports[i].x = x;
333 viewports[i].y = y;
334 viewports[i].width = width;
335 viewports[i].height = height;
336
337 viewports[i].rows = height / FONT_SCANLINES;
338 viewports[i].cols = width / COL_WIDTH;
339
340 viewports[i].bgcolor = DEFAULT_BGCOLOR;
341 viewports[i].fgcolor = DEFAULT_FGCOLOR;
342
343 viewports[i].cur_col = 0;
344 viewports[i].cur_row = 0;
345 viewports[i].cursor_active = 0;
346
347 viewports[i].initialized = 1;
348
349 return i;
350}
351
352
353/** Initialize framebuffer as a chardev output device
354 *
355 * @param addr Address of theframebuffer
356 * @param x Screen width in pixels
357 * @param y Screen height in pixels
358 * @param bpp Bits per pixel (8, 16, 24, 32)
359 * @param scan Bytes per one scanline
360 *
361 */
362static void screen_init(__address addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)
363{
364 switch (bpp) {
365 case 8:
366 screen.putpixel = putpixel_1byte;
367 screen.getpixel = getpixel_1byte;
368 screen.pixelbytes = 1;
369 break;
370 case 16:
371 screen.putpixel = putpixel_2byte;
372 screen.getpixel = getpixel_2byte;
373 screen.pixelbytes = 2;
374 break;
375 case 24:
376 screen.putpixel = putpixel_3byte;
377 screen.getpixel = getpixel_3byte;
378 screen.pixelbytes = 3;
379 break;
380 case 32:
381 screen.putpixel = putpixel_4byte;
382 screen.getpixel = getpixel_4byte;
383 screen.pixelbytes = 4;
384 break;
385 }
386
387
388 screen.fbaddress = (unsigned char *) addr;
389 screen.xres = xres;
390 screen.yres = yres;
391 screen.scanline = scan;
392
393 /* Create first viewport */
394 viewport_create(0,0,xres,yres);
395
396 clear_port(0);
397}
398
399static void cursor_hide(int vp)
400{
401 viewport_t *vport = &viewports[vp];
402
403 if (vport->cursor_active && vport->cursor_shown) {
404 invert_char(vp, vport->cur_row, vport->cur_col);
405 vport->cursor_shown = 0;
406 }
407}
408
409static void cursor_print(int vp)
410{
411 viewport_t *vport = &viewports[vp];
412
413 /* Do not check for cursor_shown */
414 if (vport->cursor_active) {
415 invert_char(vp, vport->cur_row, vport->cur_col);
416 vport->cursor_shown = 1;
417 }
418}
419
420static void cursor_blink(int vp)
421{
422 viewport_t *vport = &viewports[vp];
423
424 if (vport->cursor_shown)
425 cursor_hide(vp);
426 else
427 cursor_print(vp);
428}
429
430/** Draw character at given position relative to viewport
431 *
432 * @param vp Viewport identification
433 * @param c Character to print
434 * @param row Screen position relative to viewport
435 * @param col Screen position relative to viewport
436 */
437static void draw_char(int vp, char c, unsigned int row, unsigned int col)
438{
439 viewport_t *vport = &viewports[vp];
440
441 /* Optimize - do not hide cursor if we are going to overwrite it */
442 if (vport->cursor_active && vport->cursor_shown &&
443 (vport->cur_col != col || vport->cur_row != row))
444 invert_char(vp, vport->cur_row, vport->cur_col);
445
446 draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES);
447
448 vport->cur_col = col;
449 vport->cur_row = row;
450
451 vport->cur_col++;
452 if (vport->cur_col>= vport->cols) {
453 vport->cur_col = 0;
454 vport->cur_row++;
455 if (vport->cur_row >= vport->rows)
456 vport->cur_row--;
457 }
458 cursor_print(vp);
459}
460
461/** Function for handling connections to FB
462 *
463 */
464static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
465{
466 ipc_callid_t callid;
467 ipc_call_t call;
468 int retval;
469 int i;
470 unsigned int row,col;
471 char c;
472
473 int vp = 0;
474 viewport_t *vport = &viewports[0];
475
476 if (client_connected) {
477 ipc_answer_fast(iid, ELIMIT, 0,0);
478 return;
479 }
480 client_connected = 1;
481 ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
482
483 while (1) {
484 callid = async_get_call_timeout(&call,250000);
485 if (!callid) {
486 cursor_blink(vp);
487 continue;
488 }
489 switch (IPC_GET_METHOD(call)) {
490 case IPC_M_PHONE_HUNGUP:
491 client_connected = 0;
492 /* cleanup other viewports */
493 for (i=1; i < MAX_VIEWPORTS; i++)
494 vport->initialized = 0;
495 ipc_answer_fast(callid,0,0,0);
496 return; /* Exit thread */
497 case FB_PUTCHAR:
498 c = IPC_GET_ARG1(call);
499 row = IPC_GET_ARG2(call);
500 col = IPC_GET_ARG3(call);
501 if (row >= vport->rows || col >= vport->cols) {
502 retval = EINVAL;
503 break;
504 }
505 ipc_answer_fast(callid,0,0,0);
506
507 draw_char(vp, c, row, col);
508 continue; /* msg already answered */
509 case FB_CLEAR:
510 clear_port(vp);
511 cursor_print(vp);
512 retval = 0;
513 break;
514 case FB_CURSOR_GOTO:
515 row = IPC_GET_ARG1(call);
516 col = IPC_GET_ARG2(call);
517 if (row >= vport->rows || col >= vport->cols) {
518 retval = EINVAL;
519 break;
520 }
521 retval = 0;
522 cursor_hide(vp);
523 vport->cur_col = col;
524 vport->cur_row = row;
525 cursor_print(vp);
526 break;
527 case FB_CURSOR_VISIBILITY:
528 cursor_hide(vp);
529 vport->cursor_active = IPC_GET_ARG1(call);
530 cursor_print(vp);
531 retval = 0;
532 break;
533 case FB_GET_CSIZE:
534 ipc_answer_fast(callid, 0, vport->rows, vport->cols);
535 continue;
536 case FB_SCROLL:
537 i = IPC_GET_ARG1(call);
538 if (i > vport->rows || i < (- (int)vport->rows)) {
539 retval = EINVAL;
540 break;
541 }
542 cursor_hide(vp);
543 scroll_port(vp, i);
544 cursor_print(vp);
545 retval = 0;
546 break;
547 case FB_VIEWPORT_SWITCH:
548 i = IPC_GET_ARG1(call);
549 if (i < 0 || i >= MAX_VIEWPORTS) {
550 retval = EINVAL;
551 break;
552 }
553 if (! viewports[i].initialized ) {
554 retval = EADDRNOTAVAIL;
555 break;
556 }
557 cursor_hide(vp);
558 vp = i;
559 vport = &viewports[vp];
560 cursor_print(vp);
561 retval = 0;
562 break;
563 case FB_VIEWPORT_CREATE:
564 retval = viewport_create(IPC_GET_ARG1(call) >> 16,
565 IPC_GET_ARG1(call) & 0xffff,
566 IPC_GET_ARG2(call) >> 16,
567 IPC_GET_ARG2(call) & 0xffff);
568 break;
569 case FB_VIEWPORT_DELETE:
570 i = IPC_GET_ARG1(call);
571 if (i < 0 || i >= MAX_VIEWPORTS) {
572 retval = EINVAL;
573 break;
574 }
575 if (! viewports[i].initialized ) {
576 retval = EADDRNOTAVAIL;
577 break;
578 }
579 viewports[i].initialized = 0;
580 retval = 0;
581 break;
582 case FB_SET_STYLE:
583 vport->fgcolor = IPC_GET_ARG1(call);
584 vport->bgcolor = IPC_GET_ARG2(call);
585 retval = 0;
586 break;
587 case FB_GET_RESOLUTION:
588 ipc_answer_fast(callid, 0, screen.xres,screen.yres);
589 continue;
590 default:
591 retval = ENOENT;
592 }
593 ipc_answer_fast(callid,retval,0,0);
594 }
595}
596
597/** Initialization of framebuffer */
598int fb_init(void)
599{
600 __address fb_ph_addr;
601 unsigned int fb_width;
602 unsigned int fb_height;
603 unsigned int fb_bpp;
604 unsigned int fb_scanline;
605 __address fb_addr;
606
607 async_set_client_connection(fb_client_connection);
608
609 fb_ph_addr=sysinfo_value("fb.address.physical");
610 fb_width=sysinfo_value("fb.width");
611 fb_height=sysinfo_value("fb.height");
612 fb_bpp=sysinfo_value("fb.bpp");
613 fb_scanline=sysinfo_value("fb.scanline");
614
615 fb_addr=ALIGN_UP(((__address)set_maxheapsize(USER_ADDRESS_SPACE_SIZE_ARCH>>1)),PAGE_SIZE);
616
617 map_physmem((void *)((__address)fb_ph_addr),(void *)fb_addr,
618 (fb_scanline*fb_height+PAGE_SIZE-1)>>PAGE_WIDTH,
619 AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE);
620
621 screen_init(fb_addr, fb_width, fb_height, fb_bpp, fb_scanline);
622
623 return 0;
624}
625
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