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diff --git a/firmware/drivers/lcd-2bit-vi.c b/firmware/drivers/lcd-2bit-vi.c
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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2006 Jens Arnold
11 *
12 * Rockbox driver for 2bit vertically interleaved LCDs
13 *
14 * All files in this archive are subject to the GNU General Public License.
15 * See the file COPYING in the source tree root for full license agreement.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#include "config.h"
23
24#include "lcd.h"
25#include "kernel.h"
26#include "thread.h"
27#include <string.h>
28#include <stdlib.h>
29#include "memory.h"
30#include "file.h"
31#include "debug.h"
32#include "system.h"
33#include "font.h"
34#include "rbunicode.h"
35#include "bidi.h"
36#include "scroll_engine.h"
37
38#ifndef LCDFN /* Not compiling for remote - define macros for main LCD. */
39#define LCDFN(fn) lcd_ ## fn
40#define FBFN(fn) fb_ ## fn
41#define LCDM(ma) LCD_ ## ma
42#define MAIN_LCD
43#endif
44
45/*** globals ***/
46
47FBFN(data) LCDFN(framebuffer)[LCDM(FBHEIGHT)][LCDM(FBWIDTH)] IBSS_ATTR;
48
49static const FBFN(data) patterns[4] = {0xFFFF, 0xFF00, 0x00FF, 0x0000};
50
51static FBFN(data) *backdrop = NULL;
52static long backdrop_offset IDATA_ATTR = 0;
53
54static struct viewport default_vp =
55{
56 .x = 0,
57 .y = 0,
58 .width = LCDM(WIDTH),
59 .height = LCDM(HEIGHT),
60 .font = FONT_SYSFIXED,
61 .drawmode = DRMODE_SOLID,
62 .xmargin = 0,
63 .ymargin = 0,
64 .fg_pattern = LCDM(DEFAULT_FG),
65 .bg_pattern = LCDM(DEFAULT_BG)
66};
67
68static struct viewport IDATA_ATTR *current_vp = &default_vp;
69
70static unsigned fg_pattern IBSS_ATTR;
71static unsigned bg_pattern IBSS_ATTR;
72
73/*** Viewports ***/
74
75void LCDFN(set_viewport)(struct viewport* vp)
76{
77 if (vp == NULL)
78 current_vp = &default_vp;
79 else
80 current_vp = vp;
81
82 fg_pattern = patterns[current_vp->fg_pattern & 3];
83 bg_pattern = patterns[current_vp->bg_pattern & 3];
84}
85
86void LCDFN(update_viewport)(void)
87{
88 LCDFN(update_rect)(current_vp->x, current_vp->y,
89 current_vp->width, current_vp->height);
90}
91
92void LCDFN(update_viewport_rect)(int x, int y, int width, int height)
93{
94 LCDFN(update_rect)(current_vp->x + x, current_vp->y + y, width, height);
95}
96
97/* LCD init */
98void LCDFN(init)(void)
99{
100 LCDFN(clear_display)();
101#ifndef SIMULATOR
102 LCDFN(init_device)();
103#endif
104#ifdef MAIN_LCD
105 scroll_init();
106#endif
107}
108
109/*** parameter handling ***/
110
111#if !defined(MAIN_LCD) && defined(HAVE_LCD_COLOR)
112/* When compiling for remote LCD and the main LCD is colour. */
113unsigned lcd_remote_color_to_native(unsigned color)
114{
115 unsigned r = (color & 0xf800) >> 10;
116 unsigned g = (color & 0x07e0) >> 5;
117 unsigned b = (color & 0x001f) << 2;
118 /*
119 * |R|
120 * |Y'| = |0.299000 0.587000 0.114000| |G|
121 * |B|
122 */
123 return (5*r + 9*g + b) >> 8;
124}
125#endif
126
127void LCDFN(set_drawmode)(int mode)
128{
129 current_vp->drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
130}
131
132int LCDFN(get_drawmode)(void)
133{
134 return current_vp->drawmode;
135}
136
137void LCDFN(set_foreground)(unsigned brightness)
138{
139 current_vp->fg_pattern = brightness;
140 fg_pattern = patterns[brightness & 3];
141}
142
143unsigned LCDFN(get_foreground)(void)
144{
145 return current_vp->fg_pattern;
146}
147
148void LCDFN(set_background)(unsigned brightness)
149{
150 current_vp->bg_pattern = brightness;
151 bg_pattern = patterns[brightness & 3];
152}
153
154unsigned LCDFN(get_background)(void)
155{
156 return current_vp->bg_pattern;
157}
158
159void LCDFN(set_drawinfo)(int mode, unsigned fg_brightness,
160 unsigned bg_brightness)
161{
162 LCDFN(set_drawmode)(mode);
163 LCDFN(set_foreground)(fg_brightness);
164 LCDFN(set_background)(bg_brightness);
165}
166
167int LCDFN(getwidth)(void)
168{
169 return current_vp->width;
170}
171
172int LCDFN(getheight)(void)
173{
174 return current_vp->height;
175}
176
177void LCDFN(setmargins)(int x, int y)
178{
179 current_vp->xmargin = x;
180 current_vp->ymargin = y;
181}
182
183int LCDFN(getxmargin)(void)
184{
185 return current_vp->xmargin;
186}
187
188int LCDFN(getymargin)(void)
189{
190 return current_vp->ymargin;
191}
192
193void LCDFN(setfont)(int newfont)
194{
195 current_vp->font = newfont;
196}
197
198int LCDFN(getfont)(void)
199{
200 return current_vp->font;
201}
202
203int LCDFN(getstringsize)(const unsigned char *str, int *w, int *h)
204{
205 return font_getstringsize(str, w, h, current_vp->font);
206}
207
208/*** low-level drawing functions ***/
209
210static void setpixel(int x, int y)
211{
212 unsigned mask = 0x0101 << (y & 7);
213 FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
214 unsigned data = *address;
215
216 *address = data ^ ((data ^ fg_pattern) & mask);
217}
218
219static void clearpixel(int x, int y)
220{
221 unsigned mask = 0x0101 << (y & 7);
222 FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
223 unsigned data = *address;
224
225 *address = data ^ ((data ^ bg_pattern) & mask);
226}
227
228static void clearimgpixel(int x, int y)
229{
230 unsigned mask = 0x0101 << (y & 7);
231 FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
232 unsigned data = *address;
233
234 *address = data ^ ((data ^ *(FBFN(data) *)((long)address
235 + backdrop_offset)) & mask);
236}
237
238static void flippixel(int x, int y)
239{
240 unsigned mask = 0x0101 << (y & 7);
241 FBFN(data) *address = &LCDFN(framebuffer)[y>>3][x];
242
243 *address ^= mask;
244}
245
246static void nopixel(int x, int y)
247{
248 (void)x;
249 (void)y;
250}
251
252LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_bgcolor)[8] = {
253 flippixel, nopixel, setpixel, setpixel,
254 nopixel, clearpixel, nopixel, clearpixel
255};
256
257LCDFN(pixelfunc_type)* const LCDFN(pixelfuncs_backdrop)[8] = {
258 flippixel, nopixel, setpixel, setpixel,
259 nopixel, clearimgpixel, nopixel, clearimgpixel
260};
261
262LCDFN(pixelfunc_type)* const *LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor);
263
264/* 'mask' and 'bits' contain 2 bits per pixel */
265static void ICODE_ATTR flipblock(FBFN(data) *address, unsigned mask,
266 unsigned bits)
267{
268 *address ^= bits & mask;
269}
270
271static void ICODE_ATTR bgblock(FBFN(data) *address, unsigned mask,
272 unsigned bits)
273{
274 unsigned data = *address;
275
276 *address = data ^ ((data ^ bg_pattern) & mask & ~bits);
277}
278
279static void ICODE_ATTR bgimgblock(FBFN(data) *address, unsigned mask,
280 unsigned bits)
281{
282 unsigned data = *address;
283
284 *address = data ^ ((data ^ *(FBFN(data) *)((long)address
285 + backdrop_offset)) & mask & ~bits);
286}
287
288static void ICODE_ATTR fgblock(FBFN(data) *address, unsigned mask,
289 unsigned bits)
290{
291 unsigned data = *address;
292
293 *address = data ^ ((data ^ fg_pattern) & mask & bits);
294}
295
296static void ICODE_ATTR solidblock(FBFN(data) *address, unsigned mask,
297 unsigned bits)
298{
299 unsigned data = *address;
300 unsigned bgp = bg_pattern;
301
302 bits = bgp ^ ((bgp ^ fg_pattern) & bits);
303 *address = data ^ ((data ^ bits) & mask);
304}
305
306static void ICODE_ATTR solidimgblock(FBFN(data) *address, unsigned mask,
307 unsigned bits)
308{
309 unsigned data = *address;
310 unsigned bgp = *(FBFN(data) *)((long)address + backdrop_offset);
311
312 bits = bgp ^ ((bgp ^ fg_pattern) & bits);
313 *address = data ^ ((data ^ bits) & mask);
314}
315
316static void ICODE_ATTR flipinvblock(FBFN(data) *address, unsigned mask,
317 unsigned bits)
318{
319 *address ^= ~bits & mask;
320}
321
322static void ICODE_ATTR bginvblock(FBFN(data) *address, unsigned mask,
323 unsigned bits)
324{
325 unsigned data = *address;
326
327 *address = data ^ ((data ^ bg_pattern) & mask & bits);
328}
329
330static void ICODE_ATTR bgimginvblock(FBFN(data) *address, unsigned mask,
331 unsigned bits)
332{
333 unsigned data = *address;
334
335 *address = data ^ ((data ^ *(FBFN(data) *)((long)address
336 + backdrop_offset)) & mask & bits);
337}
338
339static void ICODE_ATTR fginvblock(FBFN(data) *address, unsigned mask,
340 unsigned bits)
341{
342 unsigned data = *address;
343
344 *address = data ^ ((data ^ fg_pattern) & mask & ~bits);
345}
346
347static void ICODE_ATTR solidinvblock(FBFN(data) *address, unsigned mask,
348 unsigned bits)
349{
350 unsigned data = *address;
351 unsigned fgp = fg_pattern;
352
353 bits = fgp ^ ((fgp ^ bg_pattern) & bits);
354 *address = data ^ ((data ^ bits) & mask);
355}
356
357static void ICODE_ATTR solidimginvblock(FBFN(data) *address, unsigned mask,
358 unsigned bits)
359{
360 unsigned data = *address;
361 unsigned fgp = fg_pattern;
362
363 bits = fgp ^ ((fgp ^ *(FBFN(data) *)((long)address
364 + backdrop_offset)) & bits);
365 *address = data ^ ((data ^ bits) & mask);
366}
367
368LCDFN(blockfunc_type)* const LCDFN(blockfuncs_bgcolor)[8] = {
369 flipblock, bgblock, fgblock, solidblock,
370 flipinvblock, bginvblock, fginvblock, solidinvblock
371};
372
373LCDFN(blockfunc_type)* const LCDFN(blockfuncs_backdrop)[8] = {
374 flipblock, bgimgblock, fgblock, solidimgblock,
375 flipinvblock, bgimginvblock, fginvblock, solidimginvblock
376};
377
378LCDFN(blockfunc_type)* const *LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor);
379
380
381void LCDFN(set_backdrop)(FBFN(data) *bd)
382{
383 backdrop = bd;
384 if (bd)
385 {
386 backdrop_offset = (long)bd - (long)LCDFN(framebuffer);
387 LCDFN(pixelfuncs) = LCDFN(pixelfuncs_backdrop);
388 LCDFN(blockfuncs) = LCDFN(blockfuncs_backdrop);
389 }
390 else
391 {
392 backdrop_offset = 0;
393 LCDFN(pixelfuncs) = LCDFN(pixelfuncs_bgcolor);
394 LCDFN(blockfuncs) = LCDFN(blockfuncs_bgcolor);
395 }
396}
397
398FBFN(data)* LCDFN(get_backdrop)(void)
399{
400 return backdrop;
401}
402
403static inline void setblock(FBFN(data) *address, unsigned mask, unsigned bits)
404{
405 unsigned data = *address;
406
407 bits ^= data;
408 *address = data ^ (bits & mask);
409}
410
411/*** drawing functions ***/
412
413/* Clear the whole display */
414void LCDFN(clear_display)(void)
415{
416 if (default_vp.drawmode & DRMODE_INVERSEVID)
417 {
418 memset(LCDFN(framebuffer), patterns[default_vp.fg_pattern & 3],
419 sizeof LCDFN(framebuffer));
420 }
421 else
422 {
423 if (backdrop)
424 memcpy(LCDFN(framebuffer), backdrop, sizeof LCDFN(framebuffer));
425 else
426 memset(LCDFN(framebuffer), patterns[default_vp.bg_pattern & 3],
427 sizeof LCDFN(framebuffer));
428 }
429
430 LCDFN(scroll_info).lines = 0;
431}
432
433/* Clear the current viewport */
434void LCDFN(clear_viewport)(void)
435{
436 int lastmode;
437
438 if (current_vp == &default_vp)
439 {
440 LCDFN(clear_display)();
441 }
442 else
443 {
444 lastmode = current_vp->drawmode;
445
446 /* Invert the INVERSEVID bit and set basic mode to SOLID */
447 current_vp->drawmode = (~lastmode & DRMODE_INVERSEVID) |
448 DRMODE_SOLID;
449
450 LCDFN(fillrect)(0, 0, current_vp->width, current_vp->height);
451
452 current_vp->drawmode = lastmode;
453
454 LCDFN(scroll_stop)(current_vp);
455 }
456}
457
458/* Set a single pixel */
459void LCDFN(drawpixel)(int x, int y)
460{
461 if (((unsigned)x < (unsigned)current_vp->width) &&
462 ((unsigned)y < (unsigned)current_vp->height))
463 LCDFN(pixelfuncs)[current_vp->drawmode](current_vp->x+x, current_vp->y+y);
464}
465
466/* Draw a line */
467void LCDFN(drawline)(int x1, int y1, int x2, int y2)
468{
469 int numpixels;
470 int i;
471 int deltax, deltay;
472 int d, dinc1, dinc2;
473 int x, xinc1, xinc2;
474 int y, yinc1, yinc2;
475 LCDFN(pixelfunc_type) *pfunc = LCDFN(pixelfuncs)[current_vp->drawmode];
476
477 deltax = abs(x2 - x1);
478 deltay = abs(y2 - y1);
479 xinc2 = 1;
480 yinc2 = 1;
481
482 if (deltax >= deltay)
483 {
484 numpixels = deltax;
485 d = 2 * deltay - deltax;
486 dinc1 = deltay * 2;
487 dinc2 = (deltay - deltax) * 2;
488 xinc1 = 1;
489 yinc1 = 0;
490 }
491 else
492 {
493 numpixels = deltay;
494 d = 2 * deltax - deltay;
495 dinc1 = deltax * 2;
496 dinc2 = (deltax - deltay) * 2;
497 xinc1 = 0;
498 yinc1 = 1;
499 }
500 numpixels++; /* include endpoints */
501
502 if (x1 > x2)
503 {
504 xinc1 = -xinc1;
505 xinc2 = -xinc2;
506 }
507
508 if (y1 > y2)
509 {
510 yinc1 = -yinc1;
511 yinc2 = -yinc2;
512 }
513
514 x = x1;
515 y = y1;
516
517 for (i = 0; i < numpixels; i++)
518 {
519 if (((unsigned)x < (unsigned)current_vp->width) &&
520 ((unsigned)y < (unsigned)current_vp->height))
521 pfunc(current_vp->x + x, current_vp->y + y);
522
523 if (d < 0)
524 {
525 d += dinc1;
526 x += xinc1;
527 y += yinc1;
528 }
529 else
530 {
531 d += dinc2;
532 x += xinc2;
533 y += yinc2;
534 }
535 }
536}
537
538/* Draw a horizontal line (optimised) */
539void LCDFN(hline)(int x1, int x2, int y)
540{
541 int x;
542 int width;
543 FBFN(data) *dst, *dst_end;
544 unsigned mask;
545 LCDFN(blockfunc_type) *bfunc;
546
547 /* direction flip */
548 if (x2 < x1)
549 {
550 x = x1;
551 x1 = x2;
552 x2 = x;
553 }
554
555 /* nothing to draw? */
556 if (((unsigned)y >= (unsigned)current_vp->height) || (x1 >= current_vp->width)
557 || (x2 < 0))
558 return;
559
560 /* clipping */
561 if (x1 < 0)
562 x1 = 0;
563 if (x2 >= current_vp->width)
564 x2 = current_vp->width-1;
565
566 width = x2 - x1 + 1;
567
568 /* adjust x1 and y to viewport */
569 x1 += current_vp->x;
570 y += current_vp->y;
571
572 bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
573 dst = &LCDFN(framebuffer)[y>>3][x1];
574 mask = 0x0101 << (y & 7);
575
576 dst_end = dst + width;
577 do
578 bfunc(dst++, mask, 0xFFFFu);
579 while (dst < dst_end);
580}
581
582/* Draw a vertical line (optimised) */
583void LCDFN(vline)(int x, int y1, int y2)
584{
585 int ny;
586 FBFN(data) *dst;
587 unsigned mask, mask_bottom;
588 LCDFN(blockfunc_type) *bfunc;
589
590 /* direction flip */
591 if (y2 < y1)
592 {
593 ny = y1;
594 y1 = y2;
595 y2 = ny;
596 }
597
598 /* nothing to draw? */
599 if (((unsigned)x >= (unsigned)current_vp->width) || (y1 >= current_vp->height)
600 || (y2 < 0))
601 return;
602
603 /* clipping */
604 if (y1 < 0)
605 y1 = 0;
606 if (y2 >= current_vp->height)
607 y2 = current_vp->height-1;
608
609 /* adjust for viewport */
610 y1 += current_vp->y;
611 y2 += current_vp->y;
612 x += current_vp->x;
613
614 bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
615 dst = &LCDFN(framebuffer)[y1>>3][x];
616 ny = y2 - (y1 & ~7);
617 mask = (0xFFu << (y1 & 7)) & 0xFFu;
618 mask |= mask << 8;
619 mask_bottom = 0xFFu >> (~ny & 7);
620 mask_bottom |= mask_bottom << 8;
621
622 for (; ny >= 8; ny -= 8)
623 {
624 bfunc(dst, mask, 0xFFFFu);
625 dst += LCDM(WIDTH);
626 mask = 0xFFFFu;
627 }
628 mask &= mask_bottom;
629 bfunc(dst, mask, 0xFFFFu);
630}
631
632/* Draw a rectangular box */
633void LCDFN(drawrect)(int x, int y, int width, int height)
634{
635 if ((width <= 0) || (height <= 0))
636 return;
637
638 int x2 = x + width - 1;
639 int y2 = y + height - 1;
640
641 LCDFN(vline)(x, y, y2);
642 LCDFN(vline)(x2, y, y2);
643 LCDFN(hline)(x, x2, y);
644 LCDFN(hline)(x, x2, y2);
645}
646
647/* Fill a rectangular area */
648void LCDFN(fillrect)(int x, int y, int width, int height)
649{
650 int ny;
651 FBFN(data) *dst, *dst_end;
652 unsigned mask, mask_bottom;
653 unsigned bits = 0;
654 LCDFN(blockfunc_type) *bfunc;
655 bool fillopt = false;
656
657 /* nothing to draw? */
658 if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
659 || (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
660 return;
661
662 /* clipping */
663 if (x < 0)
664 {
665 width += x;
666 x = 0;
667 }
668 if (y < 0)
669 {
670 height += y;
671 y = 0;
672 }
673 if (x + width > current_vp->width)
674 width = current_vp->width - x;
675 if (y + height > current_vp->height)
676 height = current_vp->height - y;
677
678 /* adjust for viewport */
679 x += current_vp->x;
680 y += current_vp->y;
681
682 if (current_vp->drawmode & DRMODE_INVERSEVID)
683 {
684 if ((current_vp->drawmode & DRMODE_BG) && !backdrop)
685 {
686 fillopt = true;
687 bits = bg_pattern;
688 }
689 }
690 else
691 {
692 if (current_vp->drawmode & DRMODE_FG)
693 {
694 fillopt = true;
695 bits = fg_pattern;
696 }
697 }
698 bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
699 dst = &LCDFN(framebuffer)[y>>3][x];
700 ny = height - 1 + (y & 7);
701 mask = (0xFFu << (y & 7)) & 0xFFu;
702 mask |= mask << 8;
703 mask_bottom = 0xFFu >> (~ny & 7);
704 mask_bottom |= mask_bottom << 8;
705
706 for (; ny >= 8; ny -= 8)
707 {
708 if (fillopt && (mask == 0xFFFFu))
709 memset16(dst, bits, width);
710 else
711 {
712 FBFN(data) *dst_row = dst;
713
714 dst_end = dst_row + width;
715 do
716 bfunc(dst_row++, mask, 0xFFFFu);
717 while (dst_row < dst_end);
718 }
719
720 dst += LCDM(WIDTH);
721 mask = 0xFFFFu;
722 }
723 mask &= mask_bottom;
724
725 if (fillopt && (mask == 0xFFFFu))
726 memset16(dst, bits, width);
727 else
728 {
729 dst_end = dst + width;
730 do
731 bfunc(dst++, mask, 0xFFFFu);
732 while (dst < dst_end);
733 }
734}
735
736/* About Rockbox' internal monochrome bitmap format:
737 *
738 * A bitmap contains one bit for every pixel that defines if that pixel is
739 * black (1) or white (0). Bits within a byte are arranged vertically, LSB
740 * at top.
741 * The bytes are stored in row-major order, with byte 0 being top left,
742 * byte 1 2nd from left etc. The first row of bytes defines pixel rows
743 * 0..7, the second row defines pixel row 8..15 etc.
744 *
745 * This is similar to the internal lcd hw format. */
746
747/* Draw a partial monochrome bitmap */
748void ICODE_ATTR LCDFN(mono_bitmap_part)(const unsigned char *src, int src_x,
749 int src_y, int stride, int x, int y,
750 int width, int height)
751{
752 int shift, ny;
753 FBFN(data) *dst, *dst_end;
754 unsigned data, mask, mask_bottom;
755 LCDFN(blockfunc_type) *bfunc;
756
757 /* nothing to draw? */
758 if ((width <= 0) || (height <= 0) || (x >= current_vp->width) ||
759 (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
760 return;
761
762 /* clipping */
763 if (x < 0)
764 {
765 width += x;
766 src_x -= x;
767 x = 0;
768 }
769 if (y < 0)
770 {
771 height += y;
772 src_y -= y;
773 y = 0;
774 }
775 if (x + width > current_vp->width)
776 width = current_vp->width - x;
777 if (y + height > current_vp->height)
778 height = current_vp->height - y;
779
780 /* adjust for viewport */
781 x += current_vp->x;
782 y += current_vp->y;
783
784 src += stride * (src_y >> 3) + src_x; /* move starting point */
785 src_y &= 7;
786 y -= src_y;
787 dst = &LCDFN(framebuffer)[y>>3][x];
788 shift = y & 7;
789 ny = height - 1 + shift + src_y;
790
791 bfunc = LCDFN(blockfuncs)[current_vp->drawmode];
792 mask = 0xFFu << (shift + src_y);
793 /* not byte-doubled here because shift+src_y can be > 7 */
794 mask_bottom = 0xFFu >> (~ny & 7);
795 mask_bottom |= mask_bottom << 8;
796
797 if (shift == 0)
798 {
799 mask &= 0xFFu;
800 mask |= mask << 8;
801
802 for (; ny >= 8; ny -= 8)
803 {
804 const unsigned char *src_row = src;
805 FBFN(data) *dst_row = dst;
806
807 dst_end = dst_row + width;
808 do
809 {
810 data = *src_row++;
811 bfunc(dst_row++, mask, data | (data << 8));
812 }
813 while (dst_row < dst_end);
814
815 src += stride;
816 dst += LCDM(WIDTH);
817 mask = 0xFFFFu;
818 }
819 mask &= mask_bottom;
820
821 dst_end = dst + width;
822 do
823 {
824 data = *src++;
825 bfunc(dst++, mask, data | (data << 8));
826 }
827 while (dst < dst_end);
828 }
829 else
830 {
831 unsigned ddata;
832
833 dst_end = dst + width;
834 do
835 {
836 const unsigned char *src_col = src++;
837 FBFN(data) *dst_col = dst++;
838 unsigned mask_col = mask & 0xFFu;
839
840 mask_col |= mask_col << 8;
841 data = 0;
842
843 for (y = ny; y >= 8; y -= 8)
844 {
845 data |= *src_col << shift;
846
847 if (mask_col)
848 {
849 ddata = data & 0xFFu;
850 bfunc(dst_col, mask_col, ddata | (ddata << 8));
851 mask_col = 0xFFFFu;
852 }
853 else
854 {
855 mask_col = (mask >> 8) & 0xFFu;
856 mask_col |= mask_col << 8;
857 }
858
859 src_col += stride;
860 dst_col += LCDM(WIDTH);
861 data >>= 8;
862 }
863 data |= *src_col << shift;
864 mask_col &= mask_bottom;
865 ddata = data & 0xFFu;
866 bfunc(dst_col, mask_col, ddata | (ddata << 8));
867 }
868 while (dst < dst_end);
869 }
870}
871
872/* Draw a full monochrome bitmap */
873void LCDFN(mono_bitmap)(const unsigned char *src, int x, int y, int width,
874 int height)
875{
876 LCDFN(mono_bitmap_part)(src, 0, 0, width, x, y, width, height);
877}
878
879/* About Rockbox' internal native bitmap format:
880 *
881 * A bitmap contains one bit in each byte of a pair of bytes for every pixel.
882 * 00 = white, 01 = light grey, 10 = dark grey, 11 = black. Bits within a byte
883 * are arranged vertically, LSB at top.
884 * The pairs of bytes are stored as shorts, in row-major order, with word 0
885 * being top left, word 1 2nd from left etc. The first row of words defines
886 * pixel rows 0..7, the second row defines pixel row 8..15 etc.
887 *
888 * This is the same as the internal lcd hw format. */
889
890/* Draw a partial native bitmap */
891void ICODE_ATTR LCDFN(bitmap_part)(const FBFN(data) *src, int src_x,
892 int src_y, int stride, int x, int y,
893 int width, int height)
894{
895 int shift, ny;
896 FBFN(data) *dst, *dst_end;
897 unsigned mask, mask_bottom;
898
899 /* nothing to draw? */
900 if ((width <= 0) || (height <= 0) || (x >= current_vp->width)
901 || (y >= current_vp->height) || (x + width <= 0) || (y + height <= 0))
902 return;
903
904 /* clipping */
905 if (x < 0)
906 {
907 width += x;
908 src_x -= x;
909 x = 0;
910 }
911 if (y < 0)
912 {
913 height += y;
914 src_y -= y;
915 y = 0;
916 }
917 if (x + width > current_vp->width)
918 width = current_vp->width - x;
919 if (y + height > current_vp->height)
920 height = current_vp->height - y;
921
922 /* adjust for viewport */
923 x += current_vp->x;
924 y += current_vp->y;
925
926 src += stride * (src_y >> 3) + src_x; /* move starting point */
927 src_y &= 7;
928 y -= src_y;
929 dst = &LCDFN(framebuffer)[y>>3][x];
930 shift = y & 7;
931 ny = height - 1 + shift + src_y;
932
933 mask = 0xFFu << (shift + src_y);
934 /* not byte-doubled here because shift+src_y can be > 7 */
935 mask_bottom = 0xFFu >> (~ny & 7);
936 mask_bottom |= mask_bottom << 8;
937
938 if (shift == 0)
939 {
940 mask &= 0xFFu;
941 mask |= mask << 8;
942
943 for (; ny >= 8; ny -= 8)
944 {
945 if (mask == 0xFFFFu)
946 memcpy(dst, src, width * sizeof(FBFN(data)));
947 else
948 {
949 const FBFN(data) *src_row = src;
950 FBFN(data) *dst_row = dst;
951
952 dst_end = dst_row + width;
953 do
954 setblock(dst_row++, mask, *src_row++);
955 while (dst_row < dst_end);
956 }
957 src += stride;
958 dst += LCDM(WIDTH);
959 mask = 0xFFFFu;
960 }
961 mask &= mask_bottom;
962
963 if (mask == 0xFFFFu)
964 memcpy(dst, src, width * sizeof(FBFN(data)));
965 else
966 {
967 dst_end = dst + width;
968 do
969 setblock(dst++, mask, *src++);
970 while (dst < dst_end);
971 }
972 }
973 else
974 {
975 unsigned datamask = (0xFFu << shift) & 0xFFu;
976
977 datamask |= datamask << 8;
978
979 dst_end = dst + width;
980 do
981 {
982 const FBFN(data) *src_col = src++;
983 FBFN(data) *dst_col = dst++;
984 unsigned mask_col = mask & 0xFFu;
985 unsigned data, olddata = 0;
986
987 mask_col |= mask_col << 8;
988
989 for (y = ny; y >= 8; y -= 8)
990 {
991 data = *src_col << shift;
992
993 if (mask_col)
994 {
995 setblock(dst_col, mask_col,
996 olddata ^((olddata ^ data) & datamask));
997 mask_col = 0xFFFFu;
998 }
999 else
1000 {
1001 mask_col = (mask << 8) & 0xFFu;
1002 mask_col |= mask_col << 8;
1003 }
1004 src_col += stride;
1005 dst_col += LCDM(WIDTH);
1006 olddata = data >> 8;
1007 }
1008 data = *src_col << shift;
1009 setblock(dst_col, mask_col & mask_bottom,
1010 olddata ^((olddata ^ data) & datamask));
1011 }
1012 while (dst < dst_end);
1013 }
1014}
1015
1016/* Draw a full native bitmap */
1017void LCDFN(bitmap)(const FBFN(data) *src, int x, int y, int width, int height)
1018{
1019 LCDFN(bitmap_part)(src, 0, 0, width, x, y, width, height);
1020}
1021
1022/* put a string at a given pixel position, skipping first ofs pixel columns */
1023static void LCDFN(putsxyofs)(int x, int y, int ofs, const unsigned char *str)
1024{
1025 unsigned short ch;
1026 unsigned short *ucs;
1027 struct font* pf = font_get(current_vp->font);
1028
1029 ucs = bidi_l2v(str, 1);
1030
1031 while ((ch = *ucs++) != 0 && x < current_vp->width)
1032 {
1033 int width;
1034 const unsigned char *bits;
1035
1036 /* get proportional width and glyph bits */
1037 width = font_get_width(pf, ch);
1038
1039 if (ofs > width)
1040 {
1041 ofs -= width;
1042 continue;
1043 }
1044
1045 bits = font_get_bits(pf, ch);
1046
1047 LCDFN(mono_bitmap_part)(bits, ofs, 0, width, x, y, width - ofs,
1048 pf->height);
1049
1050 x += width - ofs;
1051 ofs = 0;
1052 }
1053}
1054
1055/* put a string at a given pixel position */
1056void LCDFN(putsxy)(int x, int y, const unsigned char *str)
1057{
1058 LCDFN(putsxyofs)(x, y, 0, str);
1059}
1060
1061/*** line oriented text output ***/
1062
1063/* put a string at a given char position */
1064void LCDFN(puts)(int x, int y, const unsigned char *str)
1065{
1066 LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, 0);
1067}
1068
1069void LCDFN(puts_style)(int x, int y, const unsigned char *str, int style)
1070{
1071 LCDFN(puts_style_offset)(x, y, str, style, 0);
1072}
1073
1074void LCDFN(puts_offset)(int x, int y, const unsigned char *str, int offset)
1075{
1076 LCDFN(puts_style_offset)(x, y, str, STYLE_DEFAULT, offset);
1077}
1078
1079/* put a string at a given char position, style, and pixel position,
1080 * skipping first offset pixel columns */
1081void LCDFN(puts_style_offset)(int x, int y, const unsigned char *str,
1082 int style, int offset)
1083{
1084 int xpos,ypos,w,h,xrect;
1085 int lastmode = current_vp->drawmode;
1086
1087 /* make sure scrolling is turned off on the line we are updating */
1088 LCDFN(scroll_stop_line)(current_vp, y);
1089
1090 if(!str || !str[0])
1091 return;
1092
1093 LCDFN(getstringsize)(str, &w, &h);
1094 xpos = current_vp->xmargin + x*w / utf8length((char *)str);
1095 ypos = current_vp->ymargin + y*h;
1096 current_vp->drawmode = (style & STYLE_INVERT) ?
1097 (DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
1098 LCDFN(putsxyofs)(xpos, ypos, offset, str);
1099 current_vp->drawmode ^= DRMODE_INVERSEVID;
1100 xrect = xpos + MAX(w - offset, 0);
1101 LCDFN(fillrect)(xrect, ypos, current_vp->width - xrect, h);
1102 current_vp->drawmode = lastmode;
1103}
1104
1105/*** scrolling ***/
1106void LCDFN(puts_scroll)(int x, int y, const unsigned char *string)
1107{
1108 LCDFN(puts_scroll_style)(x, y, string, STYLE_DEFAULT);
1109}
1110
1111void LCDFN(puts_scroll_style)(int x, int y, const unsigned char *string, int style)
1112{
1113 LCDFN(puts_scroll_style_offset)(x, y, string, style, 0);
1114}
1115
1116void LCDFN(puts_scroll_offset)(int x, int y, const unsigned char *string, int offset)
1117{
1118 LCDFN(puts_scroll_style_offset)(x, y, string, STYLE_DEFAULT, offset);
1119}
1120
1121void LCDFN(puts_scroll_style_offset)(int x, int y, const unsigned char *string,
1122 int style, int offset)
1123{
1124 struct scrollinfo* s;
1125 int w, h;
1126
1127 if ((unsigned)y >= (unsigned)current_vp->height)
1128 return;
1129
1130 /* remove any previously scrolling line at the same location */
1131 LCDFN(scroll_stop_line)(current_vp, y);
1132
1133 if (LCDFN(scroll_info).lines >= LCDM(SCROLLABLE_LINES)) return;
1134
1135 s = &LCDFN(scroll_info).scroll[LCDFN(scroll_info).lines];
1136
1137 s->start_tick = current_tick + LCDFN(scroll_info).delay;
1138 s->style = style;
1139 if (style & STYLE_INVERT) {
1140 LCDFN(puts_style_offset)(x,y,string,STYLE_INVERT,offset);
1141 }
1142 else
1143 LCDFN(puts_offset)(x,y,string,offset);
1144
1145 LCDFN(getstringsize)(string, &w, &h);
1146
1147 if (current_vp->width - x * 8 - current_vp->xmargin < w) {
1148 /* prepare scroll line */
1149 char *end;
1150
1151 memset(s->line, 0, sizeof s->line);
1152 strcpy(s->line, string);
1153
1154 /* get width */
1155 s->width = LCDFN(getstringsize)(s->line, &w, &h);
1156
1157 /* scroll bidirectional or forward only depending on the string
1158 width */
1159 if ( LCDFN(scroll_info).bidir_limit ) {
1160 s->bidir = s->width < (current_vp->width - current_vp->xmargin) *
1161 (100 + LCDFN(scroll_info).bidir_limit) / 100;
1162 }
1163 else
1164 s->bidir = false;
1165
1166 if (!s->bidir) { /* add spaces if scrolling in the round */
1167 strcat(s->line, " ");
1168 /* get new width incl. spaces */
1169 s->width = LCDFN(getstringsize)(s->line, &w, &h);
1170 }
1171
1172 end = strchr(s->line, '\0');
1173 strncpy(end, (char *)string, current_vp->width/2);
1174
1175 s->vp = current_vp;
1176 s->y = y;
1177 s->len = utf8length((char *)string);
1178 s->offset = offset;
1179 s->startx = current_vp->xmargin + x * s->width / s->len;
1180 s->backward = false;
1181
1182 LCDFN(scroll_info).lines++;
1183 }
1184}
1185
1186void LCDFN(scroll_fn)(void)
1187{
1188 struct font* pf;
1189 struct scrollinfo* s;
1190 int index;
1191 int xpos, ypos;
1192 int lastmode;
1193 struct viewport* old_vp = current_vp;
1194
1195 for ( index = 0; index < LCDFN(scroll_info).lines; index++ ) {
1196 s = &LCDFN(scroll_info).scroll[index];
1197
1198 /* check pause */
1199 if (TIME_BEFORE(current_tick, s->start_tick))
1200 continue;
1201
1202 LCDFN(set_viewport)(s->vp);
1203
1204 if (s->backward)
1205 s->offset -= LCDFN(scroll_info).step;
1206 else
1207 s->offset += LCDFN(scroll_info).step;
1208
1209 pf = font_get(current_vp->font);
1210 xpos = s->startx;
1211 ypos = current_vp->ymargin + s->y * pf->height;
1212
1213 if (s->bidir) { /* scroll bidirectional */
1214 if (s->offset <= 0) {
1215 /* at beginning of line */
1216 s->offset = 0;
1217 s->backward = false;
1218 s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
1219 }
1220 if (s->offset >= s->width - (current_vp->width - xpos)) {
1221 /* at end of line */
1222 s->offset = s->width - (current_vp->width - xpos);
1223 s->backward = true;
1224 s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
1225 }
1226 }
1227 else {
1228 /* scroll forward the whole time */
1229 if (s->offset >= s->width)
1230 s->offset %= s->width;
1231 }
1232
1233 lastmode = current_vp->drawmode;
1234 current_vp->drawmode = (s->style&STYLE_INVERT) ?
1235 (DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID;
1236 LCDFN(putsxyofs)(xpos, ypos, s->offset, s->line);
1237 current_vp->drawmode = lastmode;
1238 LCDFN(update_viewport_rect)(xpos, ypos,
1239 current_vp->width - xpos, pf->height);
1240 }
1241
1242 LCDFN(set_viewport)(old_vp);
1243}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-24 15:25:57 +0000