1 /*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <errno.h>
18 #include <fcntl.h>
19 #include <linux/input.h>
20 #include <pthread.h>
21 #include <stdarg.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <sys/stat.h>
26 #include <sys/time.h>
27 #include <sys/types.h>
28 #include <time.h>
29 #include <unistd.h>
30
31 #include "common.h"
32 #include <cutils/android_reboot.h>
33 #include "minui/minui.h"
34 #include "recovery_ui.h"
35
36 #define MAX_COLS 96
37 #define MAX_ROWS 32
38
39 #define CHAR_WIDTH 10
40 #define CHAR_HEIGHT 18
41
42 #define UI_WAIT_KEY_TIMEOUT_SEC 120
43
44 UIParameters ui_parameters = {
45 6, // indeterminate progress bar frames
46 20, // fps
47 7, // installation icon frames (0 == static image)
48 13, 190, // installation icon overlay offset
49 };
50
51 static pthread_mutex_t gUpdateMutex = PTHREAD_MUTEX_INITIALIZER;
52 static gr_surface gBackgroundIcon[NUM_BACKGROUND_ICONS];
53 static gr_surface *gInstallationOverlay;
54 static gr_surface *gProgressBarIndeterminate;
55 static gr_surface gProgressBarEmpty;
56 static gr_surface gProgressBarFill;
57
58 static const struct { gr_surface* surface; const char *name; } BITMAPS[] = {
59 { &gBackgroundIcon[BACKGROUND_ICON_INSTALLING], "icon_installing" },
60 { &gBackgroundIcon[BACKGROUND_ICON_ERROR], "icon_error" },
61 { &gProgressBarEmpty, "progress_empty" },
62 { &gProgressBarFill, "progress_fill" },
63 { NULL, NULL },
64 };
65
66 static int gCurrentIcon = 0;
67 static int gInstallingFrame = 0;
68
69 static enum ProgressBarType {
70 PROGRESSBAR_TYPE_NONE,
71 PROGRESSBAR_TYPE_INDETERMINATE,
72 PROGRESSBAR_TYPE_NORMAL,
73 } gProgressBarType = PROGRESSBAR_TYPE_NONE;
74
75 // Progress bar scope of current operation
76 static float gProgressScopeStart = 0, gProgressScopeSize = 0, gProgress = 0;
77 static double gProgressScopeTime, gProgressScopeDuration;
78
79 // Set to 1 when both graphics pages are the same (except for the progress bar)
80 static int gPagesIdentical = 0;
81
82 // Log text overlay, displayed when a magic key is pressed
83 static char text[MAX_ROWS][MAX_COLS];
84 static int text_cols = 0, text_rows = 0;
85 static int text_col = 0, text_row = 0, text_top = 0;
86 static int show_text = 0;
87 static int show_text_ever = 0; // has show_text ever been 1?
88
89 static char menu[MAX_ROWS][MAX_COLS];
90 static int show_menu = 0;
91 static int menu_top = 0, menu_items = 0, menu_sel = 0;
92
93 // Key event input queue
94 static pthread_mutex_t key_queue_mutex = PTHREAD_MUTEX_INITIALIZER;
95 static pthread_cond_t key_queue_cond = PTHREAD_COND_INITIALIZER;
96 static int key_queue[256], key_queue_len = 0;
97 static volatile char key_pressed[KEY_MAX + 1];
98
99 // Return the current time as a double (including fractions of a second).
now()100 static double now() {
101 struct timeval tv;
102 gettimeofday(&tv, NULL);
103 return tv.tv_sec + tv.tv_usec / 1000000.0;
104 }
105
106 // Draw the given frame over the installation overlay animation. The
107 // background is not cleared or draw with the base icon first; we
108 // assume that the frame already contains some other frame of the
109 // animation. Does nothing if no overlay animation is defined.
110 // Should only be called with gUpdateMutex locked.
draw_install_overlay_locked(int frame)111 static void draw_install_overlay_locked(int frame) {
112 if (gInstallationOverlay == NULL) return;
113 gr_surface surface = gInstallationOverlay[frame];
114 int iconWidth = gr_get_width(surface);
115 int iconHeight = gr_get_height(surface);
116 gr_blit(surface, 0, 0, iconWidth, iconHeight,
117 ui_parameters.install_overlay_offset_x,
118 ui_parameters.install_overlay_offset_y);
119 }
120
121 // Clear the screen and draw the currently selected background icon (if any).
122 // Should only be called with gUpdateMutex locked.
draw_background_locked(int icon)123 static void draw_background_locked(int icon)
124 {
125 gPagesIdentical = 0;
126 gr_color(0, 0, 0, 255);
127 gr_fill(0, 0, gr_fb_width(), gr_fb_height());
128
129 if (icon) {
130 gr_surface surface = gBackgroundIcon[icon];
131 int iconWidth = gr_get_width(surface);
132 int iconHeight = gr_get_height(surface);
133 int iconX = (gr_fb_width() - iconWidth) / 2;
134 int iconY = (gr_fb_height() - iconHeight) / 2;
135 gr_blit(surface, 0, 0, iconWidth, iconHeight, iconX, iconY);
136 if (icon == BACKGROUND_ICON_INSTALLING) {
137 draw_install_overlay_locked(gInstallingFrame);
138 }
139 }
140 }
141
142 // Draw the progress bar (if any) on the screen. Does not flip pages.
143 // Should only be called with gUpdateMutex locked.
draw_progress_locked()144 static void draw_progress_locked()
145 {
146 if (gCurrentIcon == BACKGROUND_ICON_INSTALLING) {
147 draw_install_overlay_locked(gInstallingFrame);
148 }
149
150 if (gProgressBarType != PROGRESSBAR_TYPE_NONE) {
151 int iconHeight = gr_get_height(gBackgroundIcon[BACKGROUND_ICON_INSTALLING]);
152 int width = gr_get_width(gProgressBarEmpty);
153 int height = gr_get_height(gProgressBarEmpty);
154
155 int dx = (gr_fb_width() - width)/2;
156 int dy = (3*gr_fb_height() + iconHeight - 2*height)/4;
157
158 // Erase behind the progress bar (in case this was a progress-only update)
159 gr_color(0, 0, 0, 255);
160 gr_fill(dx, dy, width, height);
161
162 if (gProgressBarType == PROGRESSBAR_TYPE_NORMAL) {
163 float progress = gProgressScopeStart + gProgress * gProgressScopeSize;
164 int pos = (int) (progress * width);
165
166 if (pos > 0) {
167 gr_blit(gProgressBarFill, 0, 0, pos, height, dx, dy);
168 }
169 if (pos < width-1) {
170 gr_blit(gProgressBarEmpty, pos, 0, width-pos, height, dx+pos, dy);
171 }
172 }
173
174 if (gProgressBarType == PROGRESSBAR_TYPE_INDETERMINATE) {
175 static int frame = 0;
176 gr_blit(gProgressBarIndeterminate[frame], 0, 0, width, height, dx, dy);
177 frame = (frame + 1) % ui_parameters.indeterminate_frames;
178 }
179 }
180 }
181
draw_text_line(int row,const char * t)182 static void draw_text_line(int row, const char* t) {
183 if (t[0] != '\0') {
184 gr_text(0, (row+1)*CHAR_HEIGHT-1, t);
185 }
186 }
187
188 // Redraw everything on the screen. Does not flip pages.
189 // Should only be called with gUpdateMutex locked.
draw_screen_locked(void)190 static void draw_screen_locked(void)
191 {
192 draw_background_locked(gCurrentIcon);
193 draw_progress_locked();
194
195 if (show_text) {
196 gr_color(0, 0, 0, 160);
197 gr_fill(0, 0, gr_fb_width(), gr_fb_height());
198
199 int i = 0;
200 if (show_menu) {
201 gr_color(64, 96, 255, 255);
202 gr_fill(0, (menu_top+menu_sel) * CHAR_HEIGHT,
203 gr_fb_width(), (menu_top+menu_sel+1)*CHAR_HEIGHT+1);
204
205 for (; i < menu_top + menu_items; ++i) {
206 if (i == menu_top + menu_sel) {
207 gr_color(255, 255, 255, 255);
208 draw_text_line(i, menu[i]);
209 gr_color(64, 96, 255, 255);
210 } else {
211 draw_text_line(i, menu[i]);
212 }
213 }
214 gr_fill(0, i*CHAR_HEIGHT+CHAR_HEIGHT/2-1,
215 gr_fb_width(), i*CHAR_HEIGHT+CHAR_HEIGHT/2+1);
216 ++i;
217 }
218
219 gr_color(255, 255, 0, 255);
220
221 for (; i < text_rows; ++i) {
222 draw_text_line(i, text[(i+text_top) % text_rows]);
223 }
224 }
225 }
226
227 // Redraw everything on the screen and flip the screen (make it visible).
228 // Should only be called with gUpdateMutex locked.
update_screen_locked(void)229 static void update_screen_locked(void)
230 {
231 draw_screen_locked();
232 gr_flip();
233 }
234
235 // Updates only the progress bar, if possible, otherwise redraws the screen.
236 // Should only be called with gUpdateMutex locked.
update_progress_locked(void)237 static void update_progress_locked(void)
238 {
239 if (show_text || !gPagesIdentical) {
240 draw_screen_locked(); // Must redraw the whole screen
241 gPagesIdentical = 1;
242 } else {
243 draw_progress_locked(); // Draw only the progress bar and overlays
244 }
245 gr_flip();
246 }
247
248 // Keeps the progress bar updated, even when the process is otherwise busy.
progress_thread(void * cookie)249 static void *progress_thread(void *cookie)
250 {
251 double interval = 1.0 / ui_parameters.update_fps;
252 for (;;) {
253 double start = now();
254 pthread_mutex_lock(&gUpdateMutex);
255
256 int redraw = 0;
257
258 // update the installation animation, if active
259 // skip this if we have a text overlay (too expensive to update)
260 if (gCurrentIcon == BACKGROUND_ICON_INSTALLING &&
261 ui_parameters.installing_frames > 0 &&
262 !show_text) {
263 gInstallingFrame =
264 (gInstallingFrame + 1) % ui_parameters.installing_frames;
265 redraw = 1;
266 }
267
268 // update the progress bar animation, if active
269 // skip this if we have a text overlay (too expensive to update)
270 if (gProgressBarType == PROGRESSBAR_TYPE_INDETERMINATE && !show_text) {
271 redraw = 1;
272 }
273
274 // move the progress bar forward on timed intervals, if configured
275 int duration = gProgressScopeDuration;
276 if (gProgressBarType == PROGRESSBAR_TYPE_NORMAL && duration > 0) {
277 double elapsed = now() - gProgressScopeTime;
278 float progress = 1.0 * elapsed / duration;
279 if (progress > 1.0) progress = 1.0;
280 if (progress > gProgress) {
281 gProgress = progress;
282 redraw = 1;
283 }
284 }
285
286 if (redraw) update_progress_locked();
287
288 pthread_mutex_unlock(&gUpdateMutex);
289 double end = now();
290 // minimum of 20ms delay between frames
291 double delay = interval - (end-start);
292 if (delay < 0.02) delay = 0.02;
293 usleep((long)(delay * 1000000));
294 }
295 return NULL;
296 }
297
298 static int rel_sum = 0;
299
input_callback(int fd,short revents,void * data)300 static int input_callback(int fd, short revents, void *data)
301 {
302 struct input_event ev;
303 int ret;
304 int fake_key = 0;
305
306 ret = ev_get_input(fd, revents, &ev);
307 if (ret)
308 return -1;
309
310 if (ev.type == EV_SYN) {
311 return 0;
312 } else if (ev.type == EV_REL) {
313 if (ev.code == REL_Y) {
314 // accumulate the up or down motion reported by
315 // the trackball. When it exceeds a threshold
316 // (positive or negative), fake an up/down
317 // key event.
318 rel_sum += ev.value;
319 if (rel_sum > 3) {
320 fake_key = 1;
321 ev.type = EV_KEY;
322 ev.code = KEY_DOWN;
323 ev.value = 1;
324 rel_sum = 0;
325 } else if (rel_sum < -3) {
326 fake_key = 1;
327 ev.type = EV_KEY;
328 ev.code = KEY_UP;
329 ev.value = 1;
330 rel_sum = 0;
331 }
332 }
333 } else {
334 rel_sum = 0;
335 }
336
337 if (ev.type != EV_KEY || ev.code > KEY_MAX)
338 return 0;
339
340 pthread_mutex_lock(&key_queue_mutex);
341 if (!fake_key) {
342 // our "fake" keys only report a key-down event (no
343 // key-up), so don't record them in the key_pressed
344 // table.
345 key_pressed[ev.code] = ev.value;
346 }
347 const int queue_max = sizeof(key_queue) / sizeof(key_queue[0]);
348 if (ev.value > 0 && key_queue_len < queue_max) {
349 key_queue[key_queue_len++] = ev.code;
350 pthread_cond_signal(&key_queue_cond);
351 }
352 pthread_mutex_unlock(&key_queue_mutex);
353
354 if (ev.value > 0 && device_toggle_display(key_pressed, ev.code)) {
355 pthread_mutex_lock(&gUpdateMutex);
356 show_text = !show_text;
357 if (show_text) show_text_ever = 1;
358 update_screen_locked();
359 pthread_mutex_unlock(&gUpdateMutex);
360 }
361
362 if (ev.value > 0 && device_reboot_now(key_pressed, ev.code)) {
363 android_reboot(ANDROID_RB_RESTART, 0, 0);
364 }
365
366 return 0;
367 }
368
369 // Reads input events, handles special hot keys, and adds to the key queue.
input_thread(void * cookie)370 static void *input_thread(void *cookie)
371 {
372 for (;;) {
373 if (!ev_wait(-1))
374 ev_dispatch();
375 }
376 return NULL;
377 }
378
ui_init(void)379 void ui_init(void)
380 {
381 gr_init();
382 ev_init(input_callback, NULL);
383
384 text_col = text_row = 0;
385 text_rows = gr_fb_height() / CHAR_HEIGHT;
386 if (text_rows > MAX_ROWS) text_rows = MAX_ROWS;
387 text_top = 1;
388
389 text_cols = gr_fb_width() / CHAR_WIDTH;
390 if (text_cols > MAX_COLS - 1) text_cols = MAX_COLS - 1;
391
392 int i;
393 for (i = 0; BITMAPS[i].name != NULL; ++i) {
394 int result = res_create_surface(BITMAPS[i].name, BITMAPS[i].surface);
395 if (result < 0) {
396 LOGE("Missing bitmap %s\n(Code %d)\n", BITMAPS[i].name, result);
397 }
398 }
399
400 gProgressBarIndeterminate = malloc(ui_parameters.indeterminate_frames *
401 sizeof(gr_surface));
402 for (i = 0; i < ui_parameters.indeterminate_frames; ++i) {
403 char filename[40];
404 // "indeterminate01.png", "indeterminate02.png", ...
405 sprintf(filename, "indeterminate%02d", i+1);
406 int result = res_create_surface(filename, gProgressBarIndeterminate+i);
407 if (result < 0) {
408 LOGE("Missing bitmap %s\n(Code %d)\n", filename, result);
409 }
410 }
411
412 if (ui_parameters.installing_frames > 0) {
413 gInstallationOverlay = malloc(ui_parameters.installing_frames *
414 sizeof(gr_surface));
415 for (i = 0; i < ui_parameters.installing_frames; ++i) {
416 char filename[40];
417 // "icon_installing_overlay01.png",
418 // "icon_installing_overlay02.png", ...
419 sprintf(filename, "icon_installing_overlay%02d", i+1);
420 int result = res_create_surface(filename, gInstallationOverlay+i);
421 if (result < 0) {
422 LOGE("Missing bitmap %s\n(Code %d)\n", filename, result);
423 }
424 }
425
426 // Adjust the offset to account for the positioning of the
427 // base image on the screen.
428 if (gBackgroundIcon[BACKGROUND_ICON_INSTALLING] != NULL) {
429 gr_surface bg = gBackgroundIcon[BACKGROUND_ICON_INSTALLING];
430 ui_parameters.install_overlay_offset_x +=
431 (gr_fb_width() - gr_get_width(bg)) / 2;
432 ui_parameters.install_overlay_offset_y +=
433 (gr_fb_height() - gr_get_height(bg)) / 2;
434 }
435 } else {
436 gInstallationOverlay = NULL;
437 }
438
439 pthread_t t;
440 pthread_create(&t, NULL, progress_thread, NULL);
441 pthread_create(&t, NULL, input_thread, NULL);
442 }
443
ui_set_background(int icon)444 void ui_set_background(int icon)
445 {
446 pthread_mutex_lock(&gUpdateMutex);
447 gCurrentIcon = icon;
448 update_screen_locked();
449 pthread_mutex_unlock(&gUpdateMutex);
450 }
451
ui_show_indeterminate_progress()452 void ui_show_indeterminate_progress()
453 {
454 pthread_mutex_lock(&gUpdateMutex);
455 if (gProgressBarType != PROGRESSBAR_TYPE_INDETERMINATE) {
456 gProgressBarType = PROGRESSBAR_TYPE_INDETERMINATE;
457 update_progress_locked();
458 }
459 pthread_mutex_unlock(&gUpdateMutex);
460 }
461
ui_show_progress(float portion,int seconds)462 void ui_show_progress(float portion, int seconds)
463 {
464 pthread_mutex_lock(&gUpdateMutex);
465 gProgressBarType = PROGRESSBAR_TYPE_NORMAL;
466 gProgressScopeStart += gProgressScopeSize;
467 gProgressScopeSize = portion;
468 gProgressScopeTime = now();
469 gProgressScopeDuration = seconds;
470 gProgress = 0;
471 update_progress_locked();
472 pthread_mutex_unlock(&gUpdateMutex);
473 }
474
ui_set_progress(float fraction)475 void ui_set_progress(float fraction)
476 {
477 pthread_mutex_lock(&gUpdateMutex);
478 if (fraction < 0.0) fraction = 0.0;
479 if (fraction > 1.0) fraction = 1.0;
480 if (gProgressBarType == PROGRESSBAR_TYPE_NORMAL && fraction > gProgress) {
481 // Skip updates that aren't visibly different.
482 int width = gr_get_width(gProgressBarIndeterminate[0]);
483 float scale = width * gProgressScopeSize;
484 if ((int) (gProgress * scale) != (int) (fraction * scale)) {
485 gProgress = fraction;
486 update_progress_locked();
487 }
488 }
489 pthread_mutex_unlock(&gUpdateMutex);
490 }
491
ui_reset_progress()492 void ui_reset_progress()
493 {
494 pthread_mutex_lock(&gUpdateMutex);
495 gProgressBarType = PROGRESSBAR_TYPE_NONE;
496 gProgressScopeStart = gProgressScopeSize = 0;
497 gProgressScopeTime = gProgressScopeDuration = 0;
498 gProgress = 0;
499 update_screen_locked();
500 pthread_mutex_unlock(&gUpdateMutex);
501 }
502
ui_print(const char * fmt,...)503 void ui_print(const char *fmt, ...)
504 {
505 char buf[256];
506 va_list ap;
507 va_start(ap, fmt);
508 vsnprintf(buf, 256, fmt, ap);
509 va_end(ap);
510
511 fputs(buf, stdout);
512
513 // This can get called before ui_init(), so be careful.
514 pthread_mutex_lock(&gUpdateMutex);
515 if (text_rows > 0 && text_cols > 0) {
516 char *ptr;
517 for (ptr = buf; *ptr != '\0'; ++ptr) {
518 if (*ptr == '\n' || text_col >= text_cols) {
519 text[text_row][text_col] = '\0';
520 text_col = 0;
521 text_row = (text_row + 1) % text_rows;
522 if (text_row == text_top) text_top = (text_top + 1) % text_rows;
523 }
524 if (*ptr != '\n') text[text_row][text_col++] = *ptr;
525 }
526 text[text_row][text_col] = '\0';
527 update_screen_locked();
528 }
529 pthread_mutex_unlock(&gUpdateMutex);
530 }
531
ui_start_menu(char ** headers,char ** items,int initial_selection)532 void ui_start_menu(char** headers, char** items, int initial_selection) {
533 int i;
534 pthread_mutex_lock(&gUpdateMutex);
535 if (text_rows > 0 && text_cols > 0) {
536 for (i = 0; i < text_rows; ++i) {
537 if (headers[i] == NULL) break;
538 strncpy(menu[i], headers[i], text_cols-1);
539 menu[i][text_cols-1] = '\0';
540 }
541 menu_top = i;
542 for (; i < text_rows; ++i) {
543 if (items[i-menu_top] == NULL) break;
544 strncpy(menu[i], items[i-menu_top], text_cols-1);
545 menu[i][text_cols-1] = '\0';
546 }
547 menu_items = i - menu_top;
548 show_menu = 1;
549 menu_sel = initial_selection;
550 update_screen_locked();
551 }
552 pthread_mutex_unlock(&gUpdateMutex);
553 }
554
ui_menu_select(int sel)555 int ui_menu_select(int sel) {
556 int old_sel;
557 pthread_mutex_lock(&gUpdateMutex);
558 if (show_menu > 0) {
559 old_sel = menu_sel;
560 menu_sel = sel;
561 if (menu_sel < 0) menu_sel = 0;
562 if (menu_sel >= menu_items) menu_sel = menu_items-1;
563 sel = menu_sel;
564 if (menu_sel != old_sel) update_screen_locked();
565 }
566 pthread_mutex_unlock(&gUpdateMutex);
567 return sel;
568 }
569
ui_end_menu()570 void ui_end_menu() {
571 int i;
572 pthread_mutex_lock(&gUpdateMutex);
573 if (show_menu > 0 && text_rows > 0 && text_cols > 0) {
574 show_menu = 0;
575 update_screen_locked();
576 }
577 pthread_mutex_unlock(&gUpdateMutex);
578 }
579
ui_text_visible()580 int ui_text_visible()
581 {
582 pthread_mutex_lock(&gUpdateMutex);
583 int visible = show_text;
584 pthread_mutex_unlock(&gUpdateMutex);
585 return visible;
586 }
587
ui_text_ever_visible()588 int ui_text_ever_visible()
589 {
590 pthread_mutex_lock(&gUpdateMutex);
591 int ever_visible = show_text_ever;
592 pthread_mutex_unlock(&gUpdateMutex);
593 return ever_visible;
594 }
595
ui_show_text(int visible)596 void ui_show_text(int visible)
597 {
598 pthread_mutex_lock(&gUpdateMutex);
599 show_text = visible;
600 if (show_text) show_text_ever = 1;
601 update_screen_locked();
602 pthread_mutex_unlock(&gUpdateMutex);
603 }
604
605 // Return true if USB is connected.
usb_connected()606 static int usb_connected() {
607 int fd = open("/sys/class/android_usb/android0/state", O_RDONLY);
608 if (fd < 0) {
609 printf("failed to open /sys/class/android_usb/android0/state: %s\n",
610 strerror(errno));
611 return 0;
612 }
613
614 char buf;
615 /* USB is connected if android_usb state is CONNECTED or CONFIGURED */
616 int connected = (read(fd, &buf, 1) == 1) && (buf == 'C');
617 if (close(fd) < 0) {
618 printf("failed to close /sys/class/android_usb/android0/state: %s\n",
619 strerror(errno));
620 }
621 return connected;
622 }
623
ui_wait_key()624 int ui_wait_key()
625 {
626 pthread_mutex_lock(&key_queue_mutex);
627
628 // Time out after UI_WAIT_KEY_TIMEOUT_SEC, unless a USB cable is
629 // plugged in.
630 do {
631 struct timeval now;
632 struct timespec timeout;
633 gettimeofday(&now, NULL);
634 timeout.tv_sec = now.tv_sec;
635 timeout.tv_nsec = now.tv_usec * 1000;
636 timeout.tv_sec += UI_WAIT_KEY_TIMEOUT_SEC;
637
638 int rc = 0;
639 while (key_queue_len == 0 && rc != ETIMEDOUT) {
640 rc = pthread_cond_timedwait(&key_queue_cond, &key_queue_mutex,
641 &timeout);
642 }
643 } while (usb_connected() && key_queue_len == 0);
644
645 int key = -1;
646 if (key_queue_len > 0) {
647 key = key_queue[0];
648 memcpy(&key_queue[0], &key_queue[1], sizeof(int) * --key_queue_len);
649 }
650 pthread_mutex_unlock(&key_queue_mutex);
651 return key;
652 }
653
ui_key_pressed(int key)654 int ui_key_pressed(int key)
655 {
656 // This is a volatile static array, don't bother locking
657 return key_pressed[key];
658 }
659
ui_clear_key_queue()660 void ui_clear_key_queue() {
661 pthread_mutex_lock(&key_queue_mutex);
662 key_queue_len = 0;
663 pthread_mutex_unlock(&key_queue_mutex);
664 }
665