summaryrefslogtreecommitdiff
path: root/src/rmd_get_frames.c
blob: af52c3f36ae91a5a8a81167a6790773e87f5997e (plain)
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
/******************************************************************************
*                            recordMyDesktop                                  *
*******************************************************************************
*                                                                             *
*            Copyright (C) 2006,2007,2008 John Varouhakis                     *
*                                                                             *
*                                                                             *
*   This program 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 2 of the License, or         *
*   (at your option) any later version.                                       *
*                                                                             *
*   This program 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 this program; if not, write to the Free Software               *
*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA  *
*                                                                             *
*                                                                             *
*                                                                             *
*   For further information contact me at johnvarouhakis@gmail.com            *
******************************************************************************/

#include "config.h"
#include "rmd_get_frames.h"

#include "rmd_cache.h"
#include "rmd_frame.h"
#include "rmd_getzpixmap.h"
#include "rmd_poll_events.h"
#include "rmd_rectinsert.h"
#include "rmd_threads.h"
#include "rmd_update_image.h"
#include "rmd_yuv_utils.h"
#include "rmd_types.h"

#include <X11/extensions/Xfixes.h>
#include <X11/extensions/XShm.h>

#include <limits.h>
#include <pthread.h>
#include <sys/shm.h>
#include <errno.h>
#include <stdlib.h>
#include <time.h>


/* clip_event_area dejavu */
static void clip_dummy_pointer_area(XRectangle *area, XRectangle *clip, XRectangle *res)
{
	res->x =	(((area->x + area->width >= clip->x) &&
			  (area->x <= clip->x + clip->width)) ?
			 ((area->x <= clip->x) ? clip->x : area->x) : -1);

	res->y =	(((area->y + area->height >= clip->y) &&
			  (area->y <= clip->y + clip->height)) ?
			 ((area->y <= clip->y) ? clip->y : area->y) : -1);

	res->width =	(area->x <= clip->x) ? area->width - (clip->x - area->x) :
			(area->x <= clip->x + clip->width) ?
			(clip->width - area->x + clip->x < area->width) ?
			clip->width - area->x + clip->x : area->width : 0;

	res->height =	(area->y <= clip->y) ? area->height - (clip->y - area->y) :
			(area->y <= clip->y + clip->height) ?
			(clip->height - area->y + clip->y < area->height) ?
			clip->height - area->y + clip->y : area->height : 0;

	if (res->x + res->width > clip->x + clip->width)
		res->width = clip->x + clip->width - res->x;

	if (res->y + res->height > clip->y + clip->height)
		res->height = clip->y + clip->height - res->y;
}

#define MARK_BUFFER_AREA_C(	data,							\
				x_tm,							\
				y_tm,							\
				width_tm,						\
				height_tm,						\
				buffer_width,						\
				__depth__) {						\
											\
	register u_int##__depth__##_t *datapi = 					\
			((u_int##__depth__##_t *)data) + y_tm * buffer_width + x_tm;	\
											\
	for (int k = 0; k < height_tm; k++) {						\
		for (int i = 0; i < width_tm; i++) {					\
			*datapi += 1;							\
			datapi++;							\
		}									\
		datapi += buffer_width - width_tm;					\
	}										\
}

static void mark_buffer_area(	unsigned char *data,
				int x_tm, int y_tm,
				int width_tm, int height_tm,
				int buffer_width, int depth)
{
	if ((depth == 24) || (depth == 32)) {
		MARK_BUFFER_AREA_C(	data,
					x_tm,
					y_tm,
					width_tm,
					height_tm,
					buffer_width,
					32);
	} else {
		MARK_BUFFER_AREA_C(	data,
					x_tm,
					y_tm,
					width_tm,
					height_tm,
					buffer_width,
					16);
	}
}

//besides taking the first screenshot, this functions primary purpose is to
//initialize the structures and memory.
static int rmdFirstFrame(ProgData *pdata, Image *image)
{
	const XRectangle	*rrect = &pdata->brwin.rrect;

	if (pdata->args.noshared) {
		image->ximage = XGetImage(	pdata->dpy,
						pdata->specs.root,
						rrect->x,
						rrect->y,
						rrect->width,
						rrect->height,
						AllPlanes,
						ZPixmap);
	} else {
		image->ximage = XShmCreateImage(pdata->dpy,
						pdata->specs.visual,
						pdata->specs.depth,
						ZPixmap,
						NULL,
						&image->shm_info,
						rrect->width,
						rrect->height);

		image->shm_info.shmid = shmget(	IPC_PRIVATE,
						image->ximage->bytes_per_line *
						image->ximage->height,
						IPC_CREAT|0777);

		if (image->shm_info.shmid == -1) {
			fprintf(stderr, "Failed to obtain Shared Memory segment!\n");
			return 12;
		}

		image->shm_info.shmaddr = image->ximage->data = shmat(image->shm_info.shmid, NULL, 0);
		image->shm_info.readOnly = False;
		shmctl(image->shm_info.shmid, IPC_RMID, NULL);

		if (!XShmAttach(pdata->dpy, &image->shm_info)) {
			fprintf(stderr, "Failed to attach shared memory to proccess.\n");
			return 12;
		}

		XShmGetImage(	pdata->dpy,
				pdata->specs.root,
				image->ximage,
				rrect->x,
				rrect->y,
				AllPlanes);
	}

	rmdUpdateYuvBuffer(	&pdata->enc_data->yuv,
				(unsigned char *)image->ximage->data,
				NULL,
				0,
				0,
				rrect->width,
				rrect->height,
				pdata->args.no_quick_subsample,
				pdata->specs.depth);

	return 0;
}

//make a deep copy
static void rmdBRWinCpy(BRWindow *target, BRWindow *source)
{
	target->winrect = source->winrect;
	target->rrect = source->rrect;
	target->windowid = source->windowid;
}

//recenters the capture area to the mouse
//without exiting the display bounding box
static void rmdMoveCaptureArea(	XRectangle *rect,
				int cursor_x,
				int cursor_y,
				int width,
				int height)
{
	int t_x = 0, t_y = 0;

	t_x = cursor_x - rect->width / 2;
	t_x = (t_x >> 1) << 1;
	rect->x = (t_x < 0) ? 0 : ((t_x + rect->width > width) ? width - rect->width : t_x);
	t_y = cursor_y - rect->height / 2;
	t_y = (t_y >> 1) << 1;
	rect->y = (t_y < 0 ) ? 0 : ((t_y + rect->height > height) ? height - rect->height : t_y);
}


static void rmdBlocksReset(unsigned int blocks_w, unsigned int blocks_h)
{
	memset(yblocks, 0, blocks_w * blocks_h * sizeof(*yblocks));
	memset(ublocks, 0, blocks_w * blocks_h * sizeof(*ublocks));
	memset(vblocks, 0, blocks_w * blocks_h * sizeof(*vblocks));
}


/**
*   Extract cache blocks from damage list
*
* \param root Root entry of the list with damaged areas
*
* \param x_offset left x of the recording area
*
* \param y_offset upper y of the recording area
*
* \param blocks_w Width of image in blocks
*
* \param blocks_h Height of image in blocks
*/
static void rmdBlocksFromList(	RectArea   **root,
				unsigned int x_offset,
				unsigned int y_offset,
				unsigned int blocks_w,
				unsigned int blocks_h)
{
	rmdBlocksReset(blocks_w, blocks_h);

	for (RectArea *temp = *root; temp; temp = temp->next) {
		int	row_start, row_end, column_start, column_end;

		column_start	= ((int)(temp->rect.x - x_offset)) / Y_UNIT_WIDTH;
		column_end	= ((int)(temp->rect.x + (temp->rect.width - 1) - x_offset)) / Y_UNIT_WIDTH;
		row_start	= ((int)(temp->rect.y - y_offset)) / Y_UNIT_WIDTH;
		row_end		= ((int)(temp->rect.y + (temp->rect.height - 1) - y_offset)) / Y_UNIT_WIDTH;

		for (int i = row_start; i < row_end + 1; i++) {
			for (int j = column_start; j < column_end + 1; j++) {

				int	blockno = i * blocks_w + j;

				yblocks[blockno] = 1;
				ublocks[blockno] = 1;
				vblocks[blockno] = 1;
			}
		}
	}
}


static struct timespec us_to_timespec(unsigned us)
{
	return (struct timespec){
		.tv_sec = us / 1000000,
		.tv_nsec = (us % 1000000) * 1000,
	};
}


/* subtract t2 from t1, return difference in microseconds */
static unsigned timespec_delta_in_us(struct timespec *t1, struct timespec *t2)
{
	unsigned	us = (t1->tv_sec - t2->tv_sec) * 1000000;

	us += t1->tv_nsec / 1000;
	us -= t2->tv_nsec / 1000;

	return us;
}


/* Synchronize the next frame with either just time, or if there's
 * an audio stream, with the audio stream.
 *
 * Returns wether a new frame should be acquired, or if the current
 * yuv contents should be reused as-is (when too far behind).
 */
static boolean sync_next_frame(ProgData *pdata)
{
	int	avd, delay_us;

	assert(pdata);

	if (pdata->args.nosound) {
		struct timespec	now;

		/* when there's no audio timeline to synchronize with,
		 * drive avd entirely from CLOCK_MONOTONIC
		 */
		clock_gettime(CLOCK_MONOTONIC, &now);

		if (pdata->last_frame_ts.tv_sec) {
			pthread_mutex_lock(&pdata->avd_mutex);
			pdata->avd -= timespec_delta_in_us(&now, &pdata->last_frame_ts);
			pthread_mutex_unlock(&pdata->avd_mutex);
		}

		pdata->last_frame_ts = now;
	}

	pthread_mutex_lock(&pdata->avd_mutex);
	avd = pdata->avd;
	pthread_mutex_unlock(&pdata->avd_mutex);

	delay_us = (int)pdata->frametime_us + avd;
	if (delay_us > 1000 /* only bother sleeping when > 1ms */) {
		struct timespec	delay;

		delay = us_to_timespec(delay_us);
		nanosleep(&delay, NULL);

		/* update avd post-sleep */
		pthread_mutex_lock(&pdata->avd_mutex);
		avd = pdata->avd;
		pthread_mutex_unlock(&pdata->avd_mutex);
	}


	/* refresh the frame unless we're way too far behind */
	return (avd > 2 * -(int)MAX(pdata->frametime_us, pdata->periodtime_us));
}


/* Advances *frameno according to avd, returns wether frameno was advanced. */
static boolean advance_frameno(ProgData *pdata, unsigned *frameno)
{
	int	increment, avd;

	assert(pdata);

	pthread_mutex_lock(&pdata->avd_mutex);
	avd = pdata->avd;

	if (avd > (int)MAX(pdata->frametime_us, pdata->periodtime_us)) {
		/* if we're far ahead, don't produce a frame */
		increment = 0;
	} else if (avd > 0) {
		/* if we're just a little ahead, produce a frame */
		increment = 1;
	} else if (avd <= 2 * -(int)MAX(pdata->frametime_us, pdata->periodtime_us)) {
		/* if we're far behind, clone as many frames as fit to ~avd=0 */
		increment = -avd / (int)pdata->frametime_us;
	} else {
		/* if we're just a little behind produce a frame */
		increment = 1;
	}

	pdata->avd += increment * (int)pdata->frametime_us;
	pthread_mutex_unlock(&pdata->avd_mutex);

	(*frameno) += increment;
#if 0
	printf("avd=%i increment=%u periodtime_us=%u frametime_us=%u\n", avd, increment, pdata->periodtime_us, pdata->frametime_us);
#endif
	return (increment > 0);
}


static boolean paused(ProgData *pdata)
{
	pthread_mutex_lock(&pdata->pause_mutex);
	if (pdata->pause_state_changed) {
		pdata->pause_state_changed = FALSE;

		if (!pdata->paused) {
			pdata->paused = TRUE;
			fprintf(stderr, "STATE:PAUSED\n");
		} else {
			pdata->paused = FALSE;
			fprintf(stderr, "STATE:RECORDING\n");
			pthread_cond_broadcast(&pdata->pause_cond);
		}
	}
	pthread_mutex_unlock(&pdata->pause_mutex);

	return pdata->paused;
}


/* This thread just samples the recorded window in response to rmdTimer's
 * triggers, updating the yuv buffer hopefully at the desired frame rate.
 * Following every update, the frameno is propogated to capture_frameno
 * and image_buffer_ready is signaled for the cache/encode side to consume the
 * yuv buffer.
 */
void *rmdGetFrames(ProgData *pdata)
{
	int	blocks_w = pdata->enc_data->yuv.y_width / Y_UNIT_WIDTH,
		blocks_h = pdata->enc_data->yuv.y_height / Y_UNIT_WIDTH;
	unsigned int msk_ret;
	XRectangle mouse_pos_abs, mouse_pos_rel, mouse_pos_temp;
	BRWindow temp_brwin;
	Window root_ret, child_ret; //Frame
	XFixesCursorImage *xcim = NULL;
	Image image = {}, image_back = {};	//the image that holds
						//the current full screenshot
	int init_img1 = 0, init_img2 = 0, img_sel, d_buff;
	unsigned frameno = 0;

	rmdThreadsSetName("rmdGetFrames");

	img_sel = d_buff = pdata->args.full_shots;

	if ((init_img1 = rmdFirstFrame(pdata, &image) != 0)) {
		if (pdata->args.encOnTheFly) {
			if (remove(pdata->args.filename)) {
				perror("Error while removing file:\n");
			} else {
				fprintf(stderr,	"SIGABRT received, file %s removed\n",
						pdata->args.filename);
			}
		} else {
			rmdPurgeCache(pdata->cache_data, !pdata->args.nosound);
		}

		exit(init_img1);
	}

	if (d_buff) {
		if ((init_img2 = rmdFirstFrame(pdata, &image_back) != 0)) {
			if (pdata->args.encOnTheFly) {
				if (remove(pdata->args.filename)) {
					perror("Error while removing file:\n");
				} else{
					fprintf(stderr,	"SIGABRT received, file %s removed\n",
							pdata->args.filename);
				}
			} else {
				rmdPurgeCache(pdata->cache_data, !pdata->args.nosound);
			}

			exit(init_img2);
		}
	}

	if (!pdata->args.noframe) {
		pdata->shaped_w = rmdFrameInit(	pdata->dpy,
						pdata->specs.screen,
						pdata->specs.root,
						pdata->brwin.rrect.x,
						pdata->brwin.rrect.y,
						pdata->brwin.rrect.width,
						pdata->brwin.rrect.height);

		XSelectInput(pdata->dpy, pdata->shaped_w, ExposureMask);
	}

	mouse_pos_abs.x = mouse_pos_temp.x = 0;
	mouse_pos_abs.y = mouse_pos_temp.y = 0;
	mouse_pos_abs.width = mouse_pos_temp.width = pdata->dummy_p_size;
	mouse_pos_abs.height = mouse_pos_temp.height = pdata->dummy_p_size;
	
	//This is the the place where we call XSelectInput
	//and arrange so that we listen for damage on all
	//windows
	rmdInitEventsPolling(pdata);

	while (pdata->running) {

		if (paused(pdata)) {
			/* just pump events while paused, so shortcuts can work for unpausing */
			nanosleep(&(struct timespec) { .tv_nsec = 100000000 }, NULL);
			rmdEventLoop(pdata);
			continue;
		}

		if (sync_next_frame(pdata)) {
			//read all events and construct list with damage
			//events (if not full_shots)
			rmdEventLoop(pdata);

			/* TODO: refactor this inherited spaghetti into functions */

			//switch back and front buffers (full_shots only)
			if (d_buff)
				img_sel = img_sel ? 0 : 1;

			rmdBRWinCpy(&temp_brwin, &pdata->brwin);


			if (	pdata->args.xfixes_cursor ||
				pdata->args.have_dummy_cursor ||
				pdata->args.follow_mouse) {


				// Pointer sequence:
				// * Mark previous position as dirty with rmdRectInsert()
				// * Update to new position
				// * Mark new position as dirty with rmdRectInsert()
				if (	!pdata->args.full_shots &&
					mouse_pos_temp.x >= 0 &&
					mouse_pos_temp.y >= 0 &&
					mouse_pos_temp.width > 0 &&
					mouse_pos_temp.height > 0) {
					rmdRectInsert(&pdata->rect_root, &mouse_pos_temp);
				}

				if (pdata->args.xfixes_cursor) {
					xcim = XFixesGetCursorImage(pdata->dpy);
					mouse_pos_abs.x = xcim->x - xcim->xhot;
					mouse_pos_abs.y = xcim->y - xcim->yhot;
					mouse_pos_abs.width = xcim->width;
					mouse_pos_abs.height = xcim->height;
				} else {
					XQueryPointer(	pdata->dpy,
							pdata->specs.root,
							&root_ret, &child_ret,
							(int *)&mouse_pos_abs.x,
							(int *)&mouse_pos_abs.y,
							(int *)&mouse_pos_rel.x,
							(int *)&mouse_pos_rel.y,
							&msk_ret);
				}

				clip_dummy_pointer_area(&mouse_pos_abs, &temp_brwin.rrect, &mouse_pos_temp);
				if (	mouse_pos_temp.x >= 0 &&
					mouse_pos_temp.y >= 0 &&
					mouse_pos_temp.width > 0 &&
					mouse_pos_temp.height > 0) {

					//there are 3 capture scenarios:
					// * Xdamage
					// * full-shots with double buffering
					// * full-shots on a single buffer
					//The last one cannot be reached through
					//this code (see above how the d_buf variable is set), but
					//even if it could, it would not be of interest regarding the
					//marking of the cursor area. Single buffer means full repaint
					//on every frame so there is no need for marking at all.

					if (!pdata->args.full_shots) {
						rmdRectInsert(&pdata->rect_root, &mouse_pos_temp);
					} else if (d_buff) {
						unsigned char *back_buff= img_sel ?
									((unsigned char*)image.ximage->data) :
									((unsigned char*)image_back.ximage->data);

						mark_buffer_area(
							back_buff,
							mouse_pos_temp.x - temp_brwin.rrect.x,
							mouse_pos_temp.y - temp_brwin.rrect.y,
							mouse_pos_temp.width, mouse_pos_temp.height, temp_brwin.rrect.width,
							pdata->specs.depth
						);
					}
				}
			}

			if (pdata->args.follow_mouse) {
				rmdMoveCaptureArea(	&pdata->brwin.rrect,
							mouse_pos_abs.x + pdata->args.xfixes_cursor ? xcim->xhot : 0,
							mouse_pos_abs.y + pdata->args.xfixes_cursor ? xcim->yhot : 0,
							pdata->specs.width,
							pdata->specs.height);

				if (!pdata->args.noframe)
					rmdMoveFrame(	pdata->dpy,
							pdata->shaped_w,
							temp_brwin.rrect.x,
							temp_brwin.rrect.y);
			}

			if (!pdata->args.full_shots) {
				pthread_mutex_lock(&pdata->yuv_mutex);
				rmdUpdateImage(	pdata->dpy,
						&pdata->enc_data->yuv,
						&pdata->specs,
						&pdata->rect_root,
						&temp_brwin,
						pdata->enc_data,
						&image,
						pdata->args.noshared,
						pdata->shm_opcode,
						pdata->args.no_quick_subsample);

				rmdBlocksFromList(	&pdata->rect_root,
							temp_brwin.rrect.x,
							temp_brwin.rrect.y,
							blocks_w,
							blocks_h);

				pthread_mutex_unlock(&pdata->yuv_mutex);
			} else {
				unsigned char *front_buff = !img_sel ?	((unsigned char*)image.ximage->data):
									((unsigned char*)image_back.ximage->data);
				unsigned char *back_buff = !d_buff ? NULL : (img_sel ?
									((unsigned char*)image.ximage->data):
									((unsigned char*)image_back.ximage->data));

				if (pdata->args.noshared) {
					rmdGetZPixmap(	pdata->dpy,
							pdata->specs.root,
							image.ximage->data,
							temp_brwin.rrect.x,
							temp_brwin.rrect.y,
							temp_brwin.rrect.width,
							temp_brwin.rrect.height);
				} else {
					XShmGetImage(	pdata->dpy,
							pdata->specs.root,
							((!img_sel) ? image.ximage : image_back.ximage),
							temp_brwin.rrect.x,
							temp_brwin.rrect.y,
							AllPlanes);
				}

				pthread_mutex_lock(&pdata->yuv_mutex);
				rmdBlocksReset(blocks_w, blocks_h);
				rmdUpdateYuvBuffer(	&pdata->enc_data->yuv,
							front_buff,
							back_buff,
							0,
							0,
							temp_brwin.rrect.width,
							temp_brwin.rrect.height,
							pdata->args.no_quick_subsample,
							pdata->specs.depth);

				pthread_mutex_unlock(&pdata->yuv_mutex);
			}

			if (pdata->args.xfixes_cursor || pdata->args.have_dummy_cursor) {
				int mouse_xoffset, mouse_yoffset;

				//avoid segfaults
				clip_dummy_pointer_area(&mouse_pos_abs, &temp_brwin.rrect, &mouse_pos_temp);
				mouse_xoffset = mouse_pos_temp.x - mouse_pos_abs.x;
				mouse_yoffset = mouse_pos_temp.y - mouse_pos_abs.y;

				if ((mouse_xoffset < 0) || (mouse_xoffset > mouse_pos_abs.width))
					mouse_xoffset = 0;

				if ((mouse_yoffset < 0) || (mouse_yoffset > mouse_pos_abs.height))
					mouse_yoffset = 0;

				//draw the cursor
				if (	(mouse_pos_temp.x >= 0) &&
					(mouse_pos_temp.y >= 0) &&
					(mouse_pos_temp.width > 0) &&
					(mouse_pos_temp.height > 0)) {

						if (pdata->args.xfixes_cursor) {
							rmdXFixesPointerToYuv(
								&pdata->enc_data->yuv,
								((unsigned char*)xcim->pixels),
								mouse_pos_temp.x - temp_brwin.rrect.x,
								mouse_pos_temp.y - temp_brwin.rrect.y,
								mouse_pos_temp.width,
								mouse_pos_temp.height,
								mouse_xoffset,
								mouse_yoffset,
								xcim->width-mouse_pos_temp.width
							);
						} else {
							rmdDummyPointerToYuv(
								&pdata->enc_data->yuv,
								pdata->dummy_pointer,
								mouse_pos_temp.x - temp_brwin.rrect.x,
								mouse_pos_temp.y - temp_brwin.rrect.y,
								mouse_pos_temp.width,
								mouse_pos_temp.height,
								mouse_xoffset,
								mouse_yoffset,
								pdata->npxl
							);
						}

					if (d_buff) {
						//make previous cursor position dirty
						//on the currently front buffer (which
						//will be the back buffer next time it's
						//used)
						unsigned char *front_buff = !img_sel ?
									((unsigned char*)image.ximage->data) :
									((unsigned char*)image_back.ximage->data);

						mark_buffer_area(
							front_buff,
							mouse_pos_temp.x - temp_brwin.rrect.x,
							mouse_pos_temp.y - temp_brwin.rrect.y,
							mouse_pos_temp.width,
							mouse_pos_temp.height,
							temp_brwin.rrect.width,
							pdata->specs.depth
						);
					}

				}

				if (pdata->args.xfixes_cursor) {
					XFree(xcim);
					xcim = NULL;
				}
			}

			if (!pdata->args.full_shots)
				rmdClearList(&pdata->rect_root);
		}

		if (advance_frameno(pdata, &frameno)) {
			/* notify the encoder of additional frames */
			pthread_mutex_lock(&pdata->img_buff_ready_mutex);
			pdata->capture_frameno = frameno;
			pthread_cond_signal(&pdata->image_buffer_ready);
			pthread_mutex_unlock(&pdata->img_buff_ready_mutex);
		}
	}

	/* Make sure the encoder/cacher doen't get lost in pthread_cond_wait indefinitely,
	 * now that !pdata->running they will exit their wait loops.
	 */
	pthread_cond_signal(&pdata->image_buffer_ready);

	/* Same for waiters on pause_cond in case we quit from being paused */
	pthread_mutex_lock(&pdata->pause_mutex);
	pdata->paused = FALSE;
	pthread_cond_broadcast(&pdata->pause_cond);
	pthread_mutex_unlock(&pdata->pause_mutex);

	if (!pdata->args.noframe)
		XDestroyWindow(pdata->dpy, pdata->shaped_w);

	if (!pdata->args.noshared) {
		XShmDetach(pdata->dpy, &image.shm_info);
		shmdt(image.shm_info.shmaddr);
		if (d_buff) {
			XShmDetach(pdata->dpy, &image_back.shm_info);
			shmdt(image_back.shm_info.shmaddr);
		}
	}

	pthread_exit(&errno);
}
© All Rights Reserved