summaryrefslogtreecommitdiffstats
path: root/gui/gui.cpp
blob: 8bdd4251c7d4e9b2cc746d557e9b362f0aff50ed (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
/*
        Copyright 2012 bigbiff/Dees_Troy TeamWin
        This file is part of TWRP/TeamWin Recovery Project.

        TWRP is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        TWRP is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with TWRP.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <linux/input.h>
#include <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/reboot.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <time.h>
#include <unistd.h>
#include <stdlib.h>

extern "C"
{
#include "../twcommon.h"
#include "../minuitwrp/minui.h"
#include <pixelflinger/pixelflinger.h>
}

#include "rapidxml.hpp"
#include "objects.hpp"
#include "../data.hpp"
#include "../variables.h"
#include "../partitions.hpp"
#include "../twrp-functions.hpp"
#include "../openrecoveryscript.hpp"
#include "../orscmd/orscmd.h"
#include "blanktimer.hpp"
#include "../tw_atomic.hpp"

// Enable to print render time of each frame to the log file
//#define PRINT_RENDER_TIME 1

#ifdef _EVENT_LOGGING
#define LOGEVENT(...) LOGERR(__VA_ARGS__)
#else
#define LOGEVENT(...) do {} while (0)
#endif

const static int CURTAIN_FADE = 32;

using namespace rapidxml;

// Global values
static gr_surface gCurtain = NULL;
static int gGuiInitialized = 0;
static TWAtomicInt gGuiConsoleRunning;
static TWAtomicInt gGuiConsoleTerminate;
static TWAtomicInt gForceRender;
const int gNoAnimation = 1;
blanktimer blankTimer;
int ors_read_fd = -1;

// Needed by pages.cpp too
int gGuiRunning = 0;

static int gRecorder = -1;

extern "C" void gr_write_frame_to_file(int fd);

void flip(void)
{
	if (gRecorder != -1)
	{
		timespec time;
		clock_gettime(CLOCK_MONOTONIC, &time);
		write(gRecorder, &time, sizeof(timespec));
		gr_write_frame_to_file(gRecorder);
	}
	gr_flip();
}

void rapidxml::parse_error_handler(const char *what, void *where)
{
	fprintf(stderr, "Parser error: %s\n", what);
	fprintf(stderr, "  Start of string: %s\n",(char *) where);
	LOGERR("Error parsing XML file.\n");
	//abort();
}

static void curtainSet()
{
	gr_color(0, 0, 0, 255);
	gr_fill(0, 0, gr_fb_width(), gr_fb_height());
	gr_blit(gCurtain, 0, 0, gr_get_width(gCurtain), gr_get_height(gCurtain), TW_X_OFFSET, TW_Y_OFFSET);
	gr_flip();
}

static void curtainRaise(gr_surface surface)
{
	int sy = 0;
	int h = gr_get_height(gCurtain) - 1;
	int w = gr_get_width(gCurtain);
	int fy = 1;

	int msw = gr_get_width(surface);
	int msh = gr_get_height(surface);
	int CURTAIN_RATE = msh / 30;

	if (gNoAnimation == 0)
	{
		for (; h > 0; h -= CURTAIN_RATE, sy += CURTAIN_RATE, fy += CURTAIN_RATE)
		{
			gr_blit(surface, 0, 0, msw, msh, 0, 0);
			gr_blit(gCurtain, 0, sy, w, h, 0, 0);
			gr_flip();
		}
	}
	gr_blit(surface, 0, 0, msw, msh, 0, 0);
	flip();
}

void curtainClose()
{
#if 0
	int w = gr_get_width(gCurtain);
	int h = 1;
	int sy = gr_get_height(gCurtain) - 1;
	int fbh = gr_fb_height();
	int CURTAIN_RATE = fbh / 30;

	if (gNoAnimation == 0)
	{
		for (; h < fbh; h += CURTAIN_RATE, sy -= CURTAIN_RATE)
		{
			gr_blit(gCurtain, 0, sy, w, h, 0, 0);
			gr_flip();
		}
		gr_blit(gCurtain, 0, 0, gr_get_width(gCurtain),
		gr_get_height(gCurtain), 0, 0);
		gr_flip();

		if (gRecorder != -1)
			close(gRecorder);

		int fade;
		for (fade = 16; fade < 255; fade += CURTAIN_FADE)
		{
			gr_blit(gCurtain, 0, 0, gr_get_width(gCurtain),
			gr_get_height(gCurtain), 0, 0);
			gr_color(0, 0, 0, fade);
			gr_fill(0, 0, gr_fb_width(), gr_fb_height());
			gr_flip();
		}
		gr_color(0, 0, 0, 255);
		gr_fill(0, 0, gr_fb_width(), gr_fb_height());
		gr_flip();
	}
#else
	gr_blit(gCurtain, 0, 0, gr_get_width(gCurtain), gr_get_height(gCurtain), 0, 0);
	gr_flip();
#endif
}

class InputHandler
{
public:
	void init()
	{
		// these might be read from DataManager in the future
		touch_hold_ms = 500;
		touch_repeat_ms = 100;
		key_hold_ms = 500;
		key_repeat_ms = 100;
		touch_status = TS_NONE;
		key_status = KS_NONE;
		state = AS_NO_ACTION;
		x = y = 0;

#ifndef TW_NO_SCREEN_TIMEOUT
		{
			string seconds;
			DataManager::GetValue("tw_screen_timeout_secs", seconds);
			blankTimer.setTime(atoi(seconds.c_str()));
			blankTimer.resetTimerAndUnblank();
		}
#else
		LOGINFO("Skipping screen timeout: TW_NO_SCREEN_TIMEOUT is set\n");
#endif
	}

	// process input events. returns true if any event was received.
	bool processInput(int timeout_ms);

	void handleDrag();

private:
	// timeouts for touch/key hold and repeat
	int touch_hold_ms;
	int touch_repeat_ms;
	int key_hold_ms;
	int key_repeat_ms;

	enum touch_status_enum {
		TS_NONE = 0,
		TS_TOUCH_AND_HOLD = 1,
		TS_TOUCH_REPEAT = 2,
	};

	enum key_status_enum {
		KS_NONE = 0,
		KS_KEY_PRESSED = 1,
		KS_KEY_REPEAT = 2,
	};

	enum action_state_enum {
		AS_IN_ACTION_AREA = 0, // we've touched a spot with an action
		AS_NO_ACTION = 1,    // we've touched in an empty area (no action) and ignore remaining events until touch release
	};
	touch_status_enum touch_status;
	key_status_enum key_status;
	action_state_enum state;
	int x, y; // x and y coordinates of last touch
	struct timeval touchStart; // used to track time for long press / key repeat

	void processHoldAndRepeat();
	void process_EV_REL(input_event& ev);
	void process_EV_ABS(input_event& ev);
	void process_EV_KEY(input_event& ev);

	void doTouchStart();
};

InputHandler input_handler;


bool InputHandler::processInput(int timeout_ms)
{
	input_event ev;
	int ret = ev_get(&ev, timeout_ms);

	if (ret < 0)
	{
		// This path means that we did not get any new touch data, but
		// we do not get new touch data if you press and hold on either
		// the screen or on a keyboard key or mouse button
		if (touch_status || key_status)
			processHoldAndRepeat();
		return (ret != -2);  // -2 means no more events in the queue
	}

	switch (ev.type)
	{
	case EV_ABS:
		process_EV_ABS(ev);
		break;

	case EV_REL:
		process_EV_REL(ev);
		break;

	case EV_KEY:
		process_EV_KEY(ev);
		break;
	}

	blankTimer.resetTimerAndUnblank();
	return true;  // we got an event, so there might be more in the queue
}

void InputHandler::processHoldAndRepeat()
{
	HardwareKeyboard *kb = PageManager::GetHardwareKeyboard();

	// touch and key repeat section
	struct timeval curTime;
	gettimeofday(&curTime, NULL);
	long seconds = curTime.tv_sec - touchStart.tv_sec;
	long useconds = curTime.tv_usec - touchStart.tv_usec;
	long mtime = ((seconds) * 1000 + useconds / 1000.0) + 0.5;

	if (touch_status == TS_TOUCH_AND_HOLD && mtime > touch_hold_ms)
	{
		touch_status = TS_TOUCH_REPEAT;
		gettimeofday(&touchStart, NULL);
		LOGEVENT("TOUCH_HOLD: %d,%d\n", x, y);
		PageManager::NotifyTouch(TOUCH_HOLD, x, y);
	}
	else if (touch_status == TS_TOUCH_REPEAT && mtime > touch_repeat_ms)
	{
		LOGEVENT("TOUCH_REPEAT: %d,%d\n", x, y);
		gettimeofday(&touchStart, NULL);
		PageManager::NotifyTouch(TOUCH_REPEAT, x, y);
	}
	else if (key_status == KS_KEY_PRESSED && mtime > key_hold_ms)
	{
		LOGEVENT("KEY_HOLD: %d,%d\n", x, y);
		gettimeofday(&touchStart, NULL);
		key_status = KS_KEY_REPEAT;
		kb->KeyRepeat();
	}
	else if (key_status == KS_KEY_REPEAT && mtime > key_repeat_ms)
	{
		LOGEVENT("KEY_REPEAT: %d,%d\n", x, y);
		gettimeofday(&touchStart, NULL);
		kb->KeyRepeat();
	}
}

void InputHandler::doTouchStart()
{
	LOGEVENT("TOUCH_START: %d,%d\n", x, y);
	if (PageManager::NotifyTouch(TOUCH_START, x, y) > 0)
		state = AS_NO_ACTION;
	else
		state = AS_IN_ACTION_AREA;
	touch_status = TS_TOUCH_AND_HOLD;
	gettimeofday(&touchStart, NULL);
}

void InputHandler::process_EV_ABS(input_event& ev)
{
	x = ev.value >> 16;
	y = ev.value & 0xFFFF;

	if (ev.code == 0)
	{
		if (state == AS_IN_ACTION_AREA)
		{
			LOGEVENT("TOUCH_RELEASE: %d,%d\n", x, y);
			PageManager::NotifyTouch(TOUCH_RELEASE, x, y);
		}
		touch_status = TS_NONE;
	}
	else
	{
		if (!touch_status)
		{
			doTouchStart();
		}
		else
		{
			if (state == AS_IN_ACTION_AREA)
			{
				LOGEVENT("TOUCH_DRAG: %d,%d\n", x, y);
			}
		}
	}
}

void InputHandler::process_EV_KEY(input_event& ev)
{
	HardwareKeyboard *kb = PageManager::GetHardwareKeyboard();

	// Handle key-press here
	LOGEVENT("TOUCH_KEY: %d\n", ev.code);
	// Left mouse button is treated as a touch
	if(ev.code == BTN_LEFT)
	{
		MouseCursor *cursor = PageManager::GetMouseCursor();
		if(ev.value == 1)
		{
			cursor->GetPos(x, y);
			doTouchStart();
		}
		else if(touch_status)
		{
			// Left mouse button was previously pressed and now is
			// being released so send a TOUCH_RELEASE
			if (state == AS_IN_ACTION_AREA)
			{
				cursor->GetPos(x, y);

				LOGEVENT("Mouse TOUCH_RELEASE: %d,%d\n", x, y);
				PageManager::NotifyTouch(TOUCH_RELEASE, x, y);
			}
			touch_status = TS_NONE;
		}
	}
	// side mouse button, often used for "back" function
	else if(ev.code == BTN_SIDE)
	{
		if(ev.value == 1)
			kb->KeyDown(KEY_BACK);
		else
			kb->KeyUp(KEY_BACK);
	} else if (ev.value != 0) {
		// This is a key press
		if (kb->KeyDown(ev.code)) {
			// Key repeat is enabled for this key
			key_status = KS_KEY_PRESSED;
			touch_status = TS_NONE;
			gettimeofday(&touchStart, NULL);
		} else {
			key_status = KS_NONE;
			touch_status = TS_NONE;
		}
	} else {
		// This is a key release
		kb->KeyUp(ev.code);
		key_status = KS_NONE;
		touch_status = TS_NONE;
	}
}

void InputHandler::process_EV_REL(input_event& ev)
{
	// Mouse movement
	MouseCursor *cursor = PageManager::GetMouseCursor();
	LOGEVENT("EV_REL %d %d\n", ev.code, ev.value);
	if(ev.code == REL_X)
		cursor->Move(ev.value, 0);
	else if(ev.code == REL_Y)
		cursor->Move(0, ev.value);

	if(touch_status) {
		cursor->GetPos(x, y);
		LOGEVENT("Mouse TOUCH_DRAG: %d, %d\n", x, y);
		key_status = KS_NONE;
	}
}

void InputHandler::handleDrag()
{
	// This allows us to only send one NotifyTouch event per render
	// cycle to reduce overhead and perceived input latency.
	static int prevx = 0, prevy = 0; // these track where the last drag notice was so that we don't send duplicate drag notices
	if (touch_status && (x != prevx || y != prevy)) {
		prevx = x;
		prevy = y;
		if (PageManager::NotifyTouch(TOUCH_DRAG, x, y) > 0)
			state = AS_NO_ACTION;
		else
			state = AS_IN_ACTION_AREA;
	}
}

static void setup_ors_command()
{
	ors_read_fd = -1;

	unlink(ORS_INPUT_FILE);
	if (mkfifo(ORS_INPUT_FILE, 06660) != 0) {
		LOGINFO("Unable to mkfifo %s\n", ORS_INPUT_FILE);
		return;
	}
	unlink(ORS_OUTPUT_FILE);
	if (mkfifo(ORS_OUTPUT_FILE, 06666) != 0) {
		LOGINFO("Unable to mkfifo %s\n", ORS_OUTPUT_FILE);
		unlink(ORS_INPUT_FILE);
		return;
	}

	ors_read_fd = open(ORS_INPUT_FILE, O_RDONLY | O_NONBLOCK);
	if (ors_read_fd < 0) {
		LOGINFO("Unable to open %s\n", ORS_INPUT_FILE);
		unlink(ORS_INPUT_FILE);
		unlink(ORS_OUTPUT_FILE);
	}
}

static void ors_command_read()
{
	FILE* orsout;
	char command[1024], result[512];
	int set_page_done = 0, read_ret = 0;

	if ((read_ret = read(ors_read_fd, &command, sizeof(command))) > 0) {
		command[1022] = '\n';
		command[1023] = '\0';
		LOGINFO("Command '%s' received\n", command);
		orsout = fopen(ORS_OUTPUT_FILE, "w");
		if (!orsout) {
			close(ors_read_fd);
			ors_read_fd = -1;
			LOGINFO("Unable to fopen %s\n", ORS_OUTPUT_FILE);
			unlink(ORS_INPUT_FILE);
			unlink(ORS_OUTPUT_FILE);
			return;
		}
		if (DataManager::GetIntValue("tw_busy") != 0) {
			strcpy(result, "Failed, operation in progress\n");
			fprintf(orsout, "%s", result);
			LOGINFO("Command cannot be performed, operation in progress.\n");
		} else {
			if (gui_console_only() == 0) {
				LOGINFO("Console started successfully\n");
				gui_set_FILE(orsout);
				if (strlen(command) > 11 && strncmp(command, "runscript", 9) == 0) {
					char* filename = command + 11;
					if (OpenRecoveryScript::copy_script_file(filename) == 0) {
						LOGERR("Unable to copy script file\n");
					} else {
						OpenRecoveryScript::run_script_file();
					}
				} else if (strlen(command) > 5 && strncmp(command, "get", 3) == 0) {
					char* varname = command + 4;
					string temp;
					DataManager::GetValue(varname, temp);
					gui_print("%s = %s\n", varname, temp.c_str());
				} else if (strlen(command) > 9 && strncmp(command, "decrypt", 7) == 0) {
					char* pass = command + 8;
					gui_print("Attempting to decrypt data partition via command line.\n");
					if (PartitionManager.Decrypt_Device(pass) == 0) {
						set_page_done = 1;
					}
				} else if (OpenRecoveryScript::Insert_ORS_Command(command)) {
					OpenRecoveryScript::run_script_file();
				}
				gui_set_FILE(NULL);
				gGuiConsoleTerminate.set_value(1);
			}
		}
		fclose(orsout);
		LOGINFO("Done reading ORS command from command line\n");
		if (set_page_done) {
			DataManager::SetValue("tw_page_done", 1);
		} else {
			// The select function will return ready to read and the
			// read function will return errno 19 no such device unless
			// we set everything up all over again.
			close(ors_read_fd);
			setup_ors_command();
		}
	} else {
		LOGINFO("ORS command line read returned an error: %i, %i, %s\n", read_ret, errno, strerror(errno));
	}
	return;
}

// This special function will return immediately the first time, but then
// always returns 1/30th of a second (or immediately if called later) from
// the last time it was called
static void loopTimer(int input_timeout_ms)
{
	static timespec lastCall;
	static int initialized = 0;

	if (!initialized)
	{
		clock_gettime(CLOCK_MONOTONIC, &lastCall);
		initialized = 1;
		return;
	}

	do
	{
		bool got_event = input_handler.processInput(input_timeout_ms); // get inputs but don't send drag notices
		timespec curTime;
		clock_gettime(CLOCK_MONOTONIC, &curTime);

		timespec diff = TWFunc::timespec_diff(lastCall, curTime);

		// This is really 2 or 30 times per second
		// As long as we get events, increase the timeout so we can catch up with input
		long timeout = got_event ? 500000000 : 33333333;

		if (diff.tv_sec || diff.tv_nsec > timeout)
		{
			// int32_t input_time = TWFunc::timespec_diff_ms(lastCall, curTime);
			// LOGINFO("loopTimer(): %u ms, count: %u\n", input_time, count);

			lastCall = curTime;
			input_handler.handleDrag(); // send only drag notices if needed
			return;
		}

		// We need to sleep some period time microseconds
		//unsigned int sleepTime = 33333 -(diff.tv_nsec / 1000);
		//usleep(sleepTime); // removed so we can scan for input
		input_timeout_ms = 0;
	} while (1);
}

static int runPages(const char *page_name, const int stop_on_page_done)
{
	DataManager::SetValue("tw_page_done", 0);
	DataManager::SetValue("tw_gui_done", 0);

	if (page_name)
		gui_changePage(page_name);

	// Raise the curtain
	if (gCurtain != NULL)
	{
		gr_surface surface;

		PageManager::Render();
		gr_get_surface(&surface);
		curtainRaise(surface);
		gr_free_surface(surface);
	}

	gGuiRunning = 1;

	DataManager::SetValue("tw_loaded", 1);

#ifndef TW_OEM_BUILD
	struct timeval timeout;
	fd_set fdset;
	int has_data = 0;
#endif

	int input_timeout_ms = 0;
	int idle_frames = 0;

	for (;;)
	{
		loopTimer(input_timeout_ms);
#ifndef TW_OEM_BUILD
		if (ors_read_fd > 0) {
			FD_ZERO(&fdset);
			FD_SET(ors_read_fd, &fdset);
			timeout.tv_sec = 0;
			timeout.tv_usec = 1;
			has_data = select(ors_read_fd+1, &fdset, NULL, NULL, &timeout);
			if (has_data > 0) {
				ors_command_read();
			}
		}
#endif

		if (gGuiConsoleRunning.get_value()) {
			continue;
		}

		if (!gForceRender.get_value())
		{
			int ret = PageManager::Update();
			if (ret == 0)
				++idle_frames;
			else
				idle_frames = 0;
			// due to possible animation objects, we need to delay activating the input timeout
			input_timeout_ms = idle_frames > 15 ? 1000 : 0;

#ifndef PRINT_RENDER_TIME
			if (ret > 1)
				PageManager::Render();

			if (ret > 0)
				flip();
#else
			if (ret > 1)
			{
				timespec start, end;
				int32_t render_t, flip_t;
				clock_gettime(CLOCK_MONOTONIC, &start);
				PageManager::Render();
				clock_gettime(CLOCK_MONOTONIC, &end);
				render_t = TWFunc::timespec_diff_ms(start, end);

				flip();
				clock_gettime(CLOCK_MONOTONIC, &start);
				flip_t = TWFunc::timespec_diff_ms(end, start);

				LOGINFO("Render(): %u ms, flip(): %u ms, total: %u ms\n", render_t, flip_t, render_t+flip_t);
			}
			else if (ret > 0)
				flip();
#endif
		}
		else
		{
			gForceRender.set_value(0);
			PageManager::Render();
			flip();
			input_timeout_ms = 0;
		}

		blankTimer.checkForTimeout();
		if (stop_on_page_done && DataManager::GetIntValue("tw_page_done") != 0)
		{
			gui_changePage("main");
			break;
		}
		if (DataManager::GetIntValue("tw_gui_done") != 0)
			break;
	}
	if (ors_read_fd > 0)
		close(ors_read_fd);
	ors_read_fd = -1;
	gGuiRunning = 0;
	return 0;
}

int gui_forceRender(void)
{
	gForceRender.set_value(1);
	return 0;
}

int gui_changePage(std::string newPage)
{
	LOGINFO("Set page: '%s'\n", newPage.c_str());
	PageManager::ChangePage(newPage);
	gForceRender.set_value(1);
	return 0;
}

int gui_changeOverlay(std::string overlay)
{
	PageManager::ChangeOverlay(overlay);
	gForceRender.set_value(1);
	return 0;
}

int gui_changePackage(std::string newPackage)
{
	PageManager::SelectPackage(newPackage);
	gForceRender.set_value(1);
	return 0;
}

std::string gui_parse_text(string inText)
{
	// Copied from std::string GUIText::parseText(void)
	// This function parses text for DataManager values encompassed by %value% in the XML
	static int counter = 0;
	std::string str = inText;
	size_t pos = 0;
	size_t next = 0, end = 0;

	while (1)
	{
		next = str.find('%', pos);
		if (next == std::string::npos)
			return str;

		end = str.find('%', next + 1);
		if (end == std::string::npos)
			return str;

		// We have a block of data
		std::string var = str.substr(next + 1,(end - next) - 1);
		str.erase(next,(end - next) + 1);

		if (next + 1 == end)
			str.insert(next, 1, '%');
		else
		{
			std::string value;
			if (DataManager::GetValue(var, value) == 0)
				str.insert(next, value);
		}

		pos = next + 1;
	}
}

extern "C" int gui_init(void)
{
	gr_init();
	std::string curtain_path = TWRES "images/curtain.jpg";

	if (res_create_surface(curtain_path.c_str(), &gCurtain))
	{
		printf
		("Unable to locate '%s'\nDid you set a DEVICE_RESOLUTION in your config files?\n", curtain_path.c_str());
		return -1;
	}

	curtainSet();

	ev_init();
	return 0;
}

extern "C" int gui_loadResources(void)
{
#ifndef TW_OEM_BUILD
	int check = 0;
	DataManager::GetValue(TW_IS_ENCRYPTED, check);

	if (check)
	{
		if (PageManager::LoadPackage("TWRP", TWRES "ui.xml", "decrypt"))
		{
			LOGERR("Failed to load base packages.\n");
			goto error;
		}
		else
			check = 1;
	}

	if (check == 0 && PageManager::LoadPackage("TWRP", "/script/ui.xml", "main"))
	{
		std::string theme_path;

		theme_path = DataManager::GetSettingsStoragePath();
		if (!PartitionManager.Mount_Settings_Storage(false))
		{
			int retry_count = 5;
			while (retry_count > 0 && !PartitionManager.Mount_Settings_Storage(false))
			{
				usleep(500000);
				retry_count--;
			}

			if (!PartitionManager.Mount_Settings_Storage(false))
			{
				LOGERR("Unable to mount %s during GUI startup.\n",
					   theme_path.c_str());
				check = 1;
			}
		}

		theme_path += "/TWRP/theme/ui.zip";
		if (check || PageManager::LoadPackage("TWRP", theme_path, "main"))
		{
#endif // ifndef TW_OEM_BUILD
			if (PageManager::LoadPackage("TWRP", TWRES "ui.xml", "main"))
			{
				LOGERR("Failed to load base packages.\n");
				goto error;
			}
#ifndef TW_OEM_BUILD
		}
	}
#endif // ifndef TW_OEM_BUILD
	// Set the default package
	PageManager::SelectPackage("TWRP");

	gGuiInitialized = 1;
	return 0;

error:
	LOGERR("An internal error has occurred: unable to load theme.\n");
	gGuiInitialized = 0;
	return -1;
}

extern "C" int gui_loadCustomResources(void)
{
#ifndef TW_OEM_BUILD
	if (!PartitionManager.Mount_Settings_Storage(false)) {
		LOGERR("Unable to mount settings storage during GUI startup.\n");
		return -1;
	}

	std::string theme_path = DataManager::GetSettingsStoragePath();
	theme_path += "/TWRP/theme/ui.zip";
	// Check for a custom theme
	if (TWFunc::Path_Exists(theme_path)) {
		// There is a custom theme, try to load it
		if (PageManager::ReloadPackage("TWRP", theme_path)) {
			// Custom theme failed to load, try to load stock theme
			if (PageManager::ReloadPackage("TWRP", TWRES "ui.xml")) {
				LOGERR("Failed to load base packages.\n");
				goto error;
			}
		}
	}
	// Set the default package
	PageManager::SelectPackage("TWRP");
#endif
	return 0;

error:
	LOGERR("An internal error has occurred: unable to load theme.\n");
	gGuiInitialized = 0;
	return -1;
}

extern "C" int gui_start(void)
{
	return gui_startPage(NULL, 1, 0);
}

extern "C" int gui_startPage(const char *page_name, const int allow_commands, int stop_on_page_done)
{
	if (!gGuiInitialized)
		return -1;

	gGuiConsoleTerminate.set_value(1);

	while (gGuiConsoleRunning.get_value())
		usleep(10000);

	// Set the default package
	PageManager::SelectPackage("TWRP");

	input_handler.init();
#ifndef TW_OEM_BUILD
	if (allow_commands)
	{
		if (ors_read_fd < 0)
			setup_ors_command();
	} else {
		if (ors_read_fd >= 0) {
			close(ors_read_fd);
			ors_read_fd = -1;
		}
	}
#endif
	return runPages(page_name, stop_on_page_done);
}

static void * console_thread(void *cookie)
{
	PageManager::SwitchToConsole();

	while (!gGuiConsoleTerminate.get_value())
	{
		loopTimer(0);

		if (!gForceRender.get_value())
		{
			int ret;

			ret = PageManager::Update();
			if (ret > 1)
				PageManager::Render();

			if (ret > 0)
				flip();

			if (ret < 0)
				LOGERR("An update request has failed.\n");
		}
		else
		{
			gForceRender.set_value(0);
			PageManager::Render();
			flip();
		}
	}
	gGuiConsoleRunning.set_value(0);
	gForceRender.set_value(1); // this will kickstart the GUI to render again
	PageManager::EndConsole();
	LOGINFO("Console stopping\n");
	return NULL;
}

extern "C" int gui_console_only(void)
{
	if (!gGuiInitialized)
		return -1;

	gGuiConsoleTerminate.set_value(0);

	if (gGuiConsoleRunning.get_value())
		return 0;

	gGuiConsoleRunning.set_value(1);

	// Start by spinning off an input handler.
	pthread_t t;
	pthread_create(&t, NULL, console_thread, NULL);

	return 0;
}