1 /*
2 * Copyright © 2012 Philipp Brüschweiler
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #include "config.h"
25
26 #include <errno.h>
27 #include <stdbool.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <time.h>
32
33 #include <wayland-client.h>
34
35 #include "shared/helpers.h"
36 #include "shared/os-compatibility.h"
37 #include "presentation_timing-client-protocol.h"
38
39 typedef void (*print_info_t)(void *info);
40 typedef void (*destroy_info_t)(void *info);
41
42 struct global_info {
43 struct wl_list link;
44
45 uint32_t id;
46 uint32_t version;
47 char *interface;
48
49 print_info_t print;
50 destroy_info_t destroy;
51 };
52
53 struct output_mode {
54 struct wl_list link;
55
56 uint32_t flags;
57 int32_t width, height;
58 int32_t refresh;
59 };
60
61 struct output_info {
62 struct global_info global;
63
64 struct wl_output *output;
65
66 struct {
67 int32_t x, y;
68 int32_t physical_width, physical_height;
69 enum wl_output_subpixel subpixel;
70 enum wl_output_transform output_transform;
71 char *make;
72 char *model;
73 } geometry;
74
75 struct wl_list modes;
76 };
77
78 struct shm_format {
79 struct wl_list link;
80
81 uint32_t format;
82 };
83
84 struct shm_info {
85 struct global_info global;
86 struct wl_shm *shm;
87
88 struct wl_list formats;
89 };
90
91 struct seat_info {
92 struct global_info global;
93 struct wl_seat *seat;
94 struct weston_info *info;
95
96 uint32_t capabilities;
97 char *name;
98
99 int32_t repeat_rate;
100 int32_t repeat_delay;
101 };
102
103 struct presentation_info {
104 struct global_info global;
105 struct presentation *presentation;
106
107 clockid_t clk_id;
108 };
109
110 struct weston_info {
111 struct wl_display *display;
112 struct wl_registry *registry;
113
114 struct wl_list infos;
115 bool roundtrip_needed;
116 };
117
118 static void *
fail_on_null(void * p)119 fail_on_null(void *p)
120 {
121 if (p == NULL) {
122 fprintf(stderr, "%s: out of memory\n", getprogname());
123 exit(EXIT_FAILURE);
124 }
125
126 return p;
127 }
128
129 static void *
xmalloc(size_t s)130 xmalloc(size_t s)
131 {
132 return fail_on_null(malloc(s));
133 }
134
135 static void *
xzalloc(size_t s)136 xzalloc(size_t s)
137 {
138 return fail_on_null(calloc(1, s));
139 }
140
141 static char *
xstrdup(const char * s)142 xstrdup(const char *s)
143 {
144 return fail_on_null(strdup(s));
145 }
146
147 static void
print_global_info(void * data)148 print_global_info(void *data)
149 {
150 struct global_info *global = data;
151
152 printf("interface: '%s', version: %u, name: %u\n",
153 global->interface, global->version, global->id);
154 }
155
156 static void
init_global_info(struct weston_info * info,struct global_info * global,uint32_t id,const char * interface,uint32_t version)157 init_global_info(struct weston_info *info,
158 struct global_info *global, uint32_t id,
159 const char *interface, uint32_t version)
160 {
161 global->id = id;
162 global->version = version;
163 global->interface = xstrdup(interface);
164
165 wl_list_insert(info->infos.prev, &global->link);
166 }
167
168 static void
print_output_info(void * data)169 print_output_info(void *data)
170 {
171 struct output_info *output = data;
172 struct output_mode *mode;
173 const char *subpixel_orientation;
174 const char *transform;
175
176 print_global_info(data);
177
178 switch (output->geometry.subpixel) {
179 case WL_OUTPUT_SUBPIXEL_UNKNOWN:
180 subpixel_orientation = "unknown";
181 break;
182 case WL_OUTPUT_SUBPIXEL_NONE:
183 subpixel_orientation = "none";
184 break;
185 case WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB:
186 subpixel_orientation = "horizontal rgb";
187 break;
188 case WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR:
189 subpixel_orientation = "horizontal bgr";
190 break;
191 case WL_OUTPUT_SUBPIXEL_VERTICAL_RGB:
192 subpixel_orientation = "vertical rgb";
193 break;
194 case WL_OUTPUT_SUBPIXEL_VERTICAL_BGR:
195 subpixel_orientation = "vertical bgr";
196 break;
197 default:
198 fprintf(stderr, "unknown subpixel orientation %u\n",
199 output->geometry.subpixel);
200 subpixel_orientation = "unexpected value";
201 break;
202 }
203
204 switch (output->geometry.output_transform) {
205 case WL_OUTPUT_TRANSFORM_NORMAL:
206 transform = "normal";
207 break;
208 case WL_OUTPUT_TRANSFORM_90:
209 transform = "90°";
210 break;
211 case WL_OUTPUT_TRANSFORM_180:
212 transform = "180°";
213 break;
214 case WL_OUTPUT_TRANSFORM_270:
215 transform = "270°";
216 break;
217 case WL_OUTPUT_TRANSFORM_FLIPPED:
218 transform = "flipped";
219 break;
220 case WL_OUTPUT_TRANSFORM_FLIPPED_90:
221 transform = "flipped 90°";
222 break;
223 case WL_OUTPUT_TRANSFORM_FLIPPED_180:
224 transform = "flipped 180°";
225 break;
226 case WL_OUTPUT_TRANSFORM_FLIPPED_270:
227 transform = "flipped 270°";
228 break;
229 default:
230 fprintf(stderr, "unknown output transform %u\n",
231 output->geometry.output_transform);
232 transform = "unexpected value";
233 break;
234 }
235
236 printf("\tx: %d, y: %d,\n",
237 output->geometry.x, output->geometry.y);
238 printf("\tphysical_width: %d mm, physical_height: %d mm,\n",
239 output->geometry.physical_width,
240 output->geometry.physical_height);
241 printf("\tmake: '%s', model: '%s',\n",
242 output->geometry.make, output->geometry.model);
243 printf("\tsubpixel_orientation: %s, output_transform: %s,\n",
244 subpixel_orientation, transform);
245
246 wl_list_for_each(mode, &output->modes, link) {
247 printf("\tmode:\n");
248
249 printf("\t\twidth: %d px, height: %d px, refresh: %.f Hz,\n",
250 mode->width, mode->height,
251 (float) mode->refresh / 1000);
252
253 printf("\t\tflags:");
254 if (mode->flags & WL_OUTPUT_MODE_CURRENT)
255 printf(" current");
256 if (mode->flags & WL_OUTPUT_MODE_PREFERRED)
257 printf(" preferred");
258 printf("\n");
259 }
260 }
261
262 static void
print_shm_info(void * data)263 print_shm_info(void *data)
264 {
265 struct shm_info *shm = data;
266 struct shm_format *format;
267
268 print_global_info(data);
269
270 printf("\tformats:");
271
272 wl_list_for_each(format, &shm->formats, link)
273 switch (format->format) {
274 case WL_SHM_FORMAT_ARGB8888:
275 printf(" ARGB8888");
276 break;
277 case WL_SHM_FORMAT_XRGB8888:
278 printf(" XRGB8888");
279 break;
280 case WL_SHM_FORMAT_RGB565:
281 printf(" RGB565");
282 break;
283 default:
284 printf(" unknown(%08x)", format->format);
285 break;
286 }
287
288 printf("\n");
289 }
290
291 static void
print_seat_info(void * data)292 print_seat_info(void *data)
293 {
294 struct seat_info *seat = data;
295
296 print_global_info(data);
297
298 printf("\tname: %s\n", seat->name);
299 printf("\tcapabilities:");
300
301 if (seat->capabilities & WL_SEAT_CAPABILITY_POINTER)
302 printf(" pointer");
303 if (seat->capabilities & WL_SEAT_CAPABILITY_KEYBOARD)
304 printf(" keyboard");
305 if (seat->capabilities & WL_SEAT_CAPABILITY_TOUCH)
306 printf(" touch");
307
308 printf("\n");
309
310 if (seat->repeat_rate > 0)
311 printf("\tkeyboard repeat rate: %d\n", seat->repeat_rate);
312 if (seat->repeat_delay > 0)
313 printf("\tkeyboard repeat delay: %d\n", seat->repeat_delay);
314 }
315
316 static void
keyboard_handle_keymap(void * data,struct wl_keyboard * keyboard,uint32_t format,int fd,uint32_t size)317 keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
318 uint32_t format, int fd, uint32_t size)
319 {
320 }
321
322 static void
keyboard_handle_enter(void * data,struct wl_keyboard * keyboard,uint32_t serial,struct wl_surface * surface,struct wl_array * keys)323 keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
324 uint32_t serial, struct wl_surface *surface,
325 struct wl_array *keys)
326 {
327 }
328
329 static void
keyboard_handle_leave(void * data,struct wl_keyboard * keyboard,uint32_t serial,struct wl_surface * surface)330 keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
331 uint32_t serial, struct wl_surface *surface)
332 {
333 }
334
335 static void
keyboard_handle_key(void * data,struct wl_keyboard * keyboard,uint32_t serial,uint32_t time,uint32_t key,uint32_t state)336 keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
337 uint32_t serial, uint32_t time, uint32_t key,
338 uint32_t state)
339 {
340 }
341
342 static void
keyboard_handle_modifiers(void * data,struct wl_keyboard * keyboard,uint32_t serial,uint32_t mods_depressed,uint32_t mods_latched,uint32_t mods_locked,uint32_t group)343 keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
344 uint32_t serial, uint32_t mods_depressed,
345 uint32_t mods_latched, uint32_t mods_locked,
346 uint32_t group)
347 {
348 }
349
350 static void
keyboard_handle_repeat_info(void * data,struct wl_keyboard * keyboard,int32_t rate,int32_t delay)351 keyboard_handle_repeat_info(void *data, struct wl_keyboard *keyboard,
352 int32_t rate, int32_t delay)
353 {
354 struct seat_info *seat = data;
355
356 seat->repeat_rate = rate;
357 seat->repeat_delay = delay;
358 }
359
360 static const struct wl_keyboard_listener keyboard_listener = {
361 keyboard_handle_keymap,
362 keyboard_handle_enter,
363 keyboard_handle_leave,
364 keyboard_handle_key,
365 keyboard_handle_modifiers,
366 keyboard_handle_repeat_info,
367 };
368
369 static void
seat_handle_capabilities(void * data,struct wl_seat * wl_seat,enum wl_seat_capability caps)370 seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
371 enum wl_seat_capability caps)
372 {
373 struct seat_info *seat = data;
374
375 seat->capabilities = caps;
376
377 /* we want listen for repeat_info from wl_keyboard, but only
378 * do so if the seat info is >= 4 and if we actually have a
379 * keyboard */
380 if (seat->global.version < 4)
381 return;
382
383 if (caps & WL_SEAT_CAPABILITY_KEYBOARD) {
384 struct wl_keyboard *keyboard;
385
386 keyboard = wl_seat_get_keyboard(seat->seat);
387 wl_keyboard_add_listener(keyboard, &keyboard_listener,
388 seat);
389
390 seat->info->roundtrip_needed = true;
391 }
392 }
393
394 static void
seat_handle_name(void * data,struct wl_seat * wl_seat,const char * name)395 seat_handle_name(void *data, struct wl_seat *wl_seat,
396 const char *name)
397 {
398 struct seat_info *seat = data;
399 seat->name = xstrdup(name);
400 }
401
402 static const struct wl_seat_listener seat_listener = {
403 seat_handle_capabilities,
404 seat_handle_name,
405 };
406
407 static void
destroy_seat_info(void * data)408 destroy_seat_info(void *data)
409 {
410 struct seat_info *seat = data;
411
412 wl_seat_destroy(seat->seat);
413
414 if (seat->name != NULL)
415 free(seat->name);
416 }
417
418 static void
add_seat_info(struct weston_info * info,uint32_t id,uint32_t version)419 add_seat_info(struct weston_info *info, uint32_t id, uint32_t version)
420 {
421 struct seat_info *seat = xzalloc(sizeof *seat);
422
423 /* required to set roundtrip_needed to true in capabilities
424 * handler */
425 seat->info = info;
426
427 init_global_info(info, &seat->global, id, "wl_seat", version);
428 seat->global.print = print_seat_info;
429 seat->global.destroy = destroy_seat_info;
430
431 seat->seat = wl_registry_bind(info->registry,
432 id, &wl_seat_interface, MIN(version, 4));
433 wl_seat_add_listener(seat->seat, &seat_listener, seat);
434
435 seat->repeat_rate = seat->repeat_delay = -1;
436
437 info->roundtrip_needed = true;
438 }
439
440 static void
shm_handle_format(void * data,struct wl_shm * wl_shm,uint32_t format)441 shm_handle_format(void *data, struct wl_shm *wl_shm, uint32_t format)
442 {
443 struct shm_info *shm = data;
444 struct shm_format *shm_format = xzalloc(sizeof *shm_format);
445
446 wl_list_insert(&shm->formats, &shm_format->link);
447 shm_format->format = format;
448 }
449
450 static const struct wl_shm_listener shm_listener = {
451 shm_handle_format,
452 };
453
454 static void
destroy_shm_info(void * data)455 destroy_shm_info(void *data)
456 {
457 struct shm_info *shm = data;
458 struct shm_format *format, *tmp;
459
460 wl_list_for_each_safe(format, tmp, &shm->formats, link) {
461 wl_list_remove(&format->link);
462 free(format);
463 }
464
465 wl_shm_destroy(shm->shm);
466 }
467
468 static void
add_shm_info(struct weston_info * info,uint32_t id,uint32_t version)469 add_shm_info(struct weston_info *info, uint32_t id, uint32_t version)
470 {
471 struct shm_info *shm = xzalloc(sizeof *shm);
472
473 init_global_info(info, &shm->global, id, "wl_shm", version);
474 shm->global.print = print_shm_info;
475 shm->global.destroy = destroy_shm_info;
476
477 wl_list_init(&shm->formats);
478
479 shm->shm = wl_registry_bind(info->registry,
480 id, &wl_shm_interface, 1);
481 wl_shm_add_listener(shm->shm, &shm_listener, shm);
482
483 info->roundtrip_needed = true;
484 }
485
486 static void
output_handle_geometry(void * data,struct wl_output * wl_output,int32_t x,int32_t y,int32_t physical_width,int32_t physical_height,int32_t subpixel,const char * make,const char * model,int32_t output_transform)487 output_handle_geometry(void *data, struct wl_output *wl_output,
488 int32_t x, int32_t y,
489 int32_t physical_width, int32_t physical_height,
490 int32_t subpixel,
491 const char *make, const char *model,
492 int32_t output_transform)
493 {
494 struct output_info *output = data;
495
496 output->geometry.x = x;
497 output->geometry.y = y;
498 output->geometry.physical_width = physical_width;
499 output->geometry.physical_height = physical_height;
500 output->geometry.subpixel = subpixel;
501 output->geometry.make = xstrdup(make);
502 output->geometry.model = xstrdup(model);
503 output->geometry.output_transform = output_transform;
504 }
505
506 static void
output_handle_mode(void * data,struct wl_output * wl_output,uint32_t flags,int32_t width,int32_t height,int32_t refresh)507 output_handle_mode(void *data, struct wl_output *wl_output,
508 uint32_t flags, int32_t width, int32_t height,
509 int32_t refresh)
510 {
511 struct output_info *output = data;
512 struct output_mode *mode = xmalloc(sizeof *mode);
513
514 mode->flags = flags;
515 mode->width = width;
516 mode->height = height;
517 mode->refresh = refresh;
518
519 wl_list_insert(output->modes.prev, &mode->link);
520 }
521
522 static const struct wl_output_listener output_listener = {
523 output_handle_geometry,
524 output_handle_mode,
525 };
526
527 static void
destroy_output_info(void * data)528 destroy_output_info(void *data)
529 {
530 struct output_info *output = data;
531 struct output_mode *mode, *tmp;
532
533 wl_output_destroy(output->output);
534
535 if (output->geometry.make != NULL)
536 free(output->geometry.make);
537 if (output->geometry.model != NULL)
538 free(output->geometry.model);
539
540 wl_list_for_each_safe(mode, tmp, &output->modes, link) {
541 wl_list_remove(&mode->link);
542 free(mode);
543 }
544 }
545
546 static void
add_output_info(struct weston_info * info,uint32_t id,uint32_t version)547 add_output_info(struct weston_info *info, uint32_t id, uint32_t version)
548 {
549 struct output_info *output = xzalloc(sizeof *output);
550
551 init_global_info(info, &output->global, id, "wl_output", version);
552 output->global.print = print_output_info;
553 output->global.destroy = destroy_output_info;
554
555 wl_list_init(&output->modes);
556
557 output->output = wl_registry_bind(info->registry, id,
558 &wl_output_interface, 1);
559 wl_output_add_listener(output->output, &output_listener,
560 output);
561
562 info->roundtrip_needed = true;
563 }
564
565 static void
destroy_presentation_info(void * info)566 destroy_presentation_info(void *info)
567 {
568 struct presentation_info *prinfo = info;
569
570 presentation_destroy(prinfo->presentation);
571 }
572
573 static const char *
clock_name(clockid_t clk_id)574 clock_name(clockid_t clk_id)
575 {
576 static const char *names[] = {
577 [CLOCK_REALTIME] = "CLOCK_REALTIME",
578 [CLOCK_MONOTONIC] = "CLOCK_MONOTONIC",
579 #if defined(__FreeBSD__)
580 [CLOCK_REALTIME_FAST] = "CLOCK_REALTIME_COARSE",
581 [CLOCK_MONOTONIC_FAST] = "CLOCK_MONOTONIC_COARSE",
582 #else
583 [CLOCK_MONOTONIC_RAW] = "CLOCK_MONOTONIC_RAW",
584 [CLOCK_REALTIME_COARSE] = "CLOCK_REALTIME_COARSE",
585 [CLOCK_MONOTONIC_COARSE] = "CLOCK_MONOTONIC_COARSE",
586 [CLOCK_BOOTTIME] = "CLOCK_BOOTTIME",
587 #endif
588 };
589
590 #if defined(__FreeBSD__)
591 if ((unsigned)clk_id >= ARRAY_LENGTH(names))
592 #else
593 if (clk_id < 0 || (unsigned)clk_id >= ARRAY_LENGTH(names))
594 #endif
595 return "unknown";
596
597 return names[clk_id];
598 }
599
600 static void
print_presentation_info(void * info)601 print_presentation_info(void *info)
602 {
603 struct presentation_info *prinfo = info;
604
605 print_global_info(info);
606
607 #if defined(__FreeBSD__)
608 printf("\tpresentation clock id: %ld (%s)\n",
609 #else
610 printf("\tpresentation clock id: %d (%s)\n",
611 #endif
612 prinfo->clk_id, clock_name(prinfo->clk_id));
613 }
614
615 static void
presentation_handle_clock_id(void * data,struct presentation * presentation,uint32_t clk_id)616 presentation_handle_clock_id(void *data, struct presentation *presentation,
617 uint32_t clk_id)
618 {
619 struct presentation_info *prinfo = data;
620
621 prinfo->clk_id = clk_id;
622 }
623
624 static const struct presentation_listener presentation_listener = {
625 presentation_handle_clock_id
626 };
627
628 static void
add_presentation_info(struct weston_info * info,uint32_t id,uint32_t version)629 add_presentation_info(struct weston_info *info, uint32_t id, uint32_t version)
630 {
631 struct presentation_info *prinfo = xzalloc(sizeof *prinfo);
632
633 init_global_info(info, &prinfo->global, id, "presentation", version);
634 prinfo->global.print = print_presentation_info;
635 prinfo->global.destroy = destroy_presentation_info;
636
637 prinfo->clk_id = -1;
638 prinfo->presentation = wl_registry_bind(info->registry, id,
639 &presentation_interface, 1);
640 presentation_add_listener(prinfo->presentation, &presentation_listener,
641 prinfo);
642
643 info->roundtrip_needed = true;
644 }
645
646 static void
destroy_global_info(void * data)647 destroy_global_info(void *data)
648 {
649 }
650
651 static void
add_global_info(struct weston_info * info,uint32_t id,const char * interface,uint32_t version)652 add_global_info(struct weston_info *info, uint32_t id,
653 const char *interface, uint32_t version)
654 {
655 struct global_info *global = xzalloc(sizeof *global);
656
657 init_global_info(info, global, id, interface, version);
658 global->print = print_global_info;
659 global->destroy = destroy_global_info;
660 }
661
662 static void
global_handler(void * data,struct wl_registry * registry,uint32_t id,const char * interface,uint32_t version)663 global_handler(void *data, struct wl_registry *registry, uint32_t id,
664 const char *interface, uint32_t version)
665 {
666 struct weston_info *info = data;
667
668 if (!strcmp(interface, "wl_seat"))
669 add_seat_info(info, id, version);
670 else if (!strcmp(interface, "wl_shm"))
671 add_shm_info(info, id, version);
672 else if (!strcmp(interface, "wl_output"))
673 add_output_info(info, id, version);
674 else if (!strcmp(interface, "presentation"))
675 add_presentation_info(info, id, version);
676 else
677 add_global_info(info, id, interface, version);
678 }
679
680 static void
global_remove_handler(void * data,struct wl_registry * registry,uint32_t name)681 global_remove_handler(void *data, struct wl_registry *registry, uint32_t name)
682 {
683 }
684
685 static const struct wl_registry_listener registry_listener = {
686 global_handler,
687 global_remove_handler
688 };
689
690 static void
print_infos(struct wl_list * infos)691 print_infos(struct wl_list *infos)
692 {
693 struct global_info *info;
694
695 wl_list_for_each(info, infos, link)
696 info->print(info);
697 }
698
699 static void
destroy_info(void * data)700 destroy_info(void *data)
701 {
702 struct global_info *global = data;
703
704 global->destroy(data);
705 wl_list_remove(&global->link);
706 free(global->interface);
707 free(data);
708 }
709
710 static void
destroy_infos(struct wl_list * infos)711 destroy_infos(struct wl_list *infos)
712 {
713 struct global_info *info, *tmp;
714 wl_list_for_each_safe(info, tmp, infos, link)
715 destroy_info(info);
716 }
717
718 int
main(int argc,char ** argv)719 main(int argc, char **argv)
720 {
721 struct weston_info info;
722
723 info.display = wl_display_connect(NULL);
724 if (!info.display) {
725 fprintf(stderr, "failed to create display: %s\n",
726 strerror(errno));
727 return -1;
728 }
729
730 wl_list_init(&info.infos);
731
732 info.registry = wl_display_get_registry(info.display);
733 wl_registry_add_listener(info.registry, ®istry_listener, &info);
734
735 do {
736 info.roundtrip_needed = false;
737 wl_display_roundtrip(info.display);
738 } while (info.roundtrip_needed);
739
740 print_infos(&info.infos);
741 destroy_infos(&info.infos);
742
743 wl_registry_destroy(info.registry);
744 wl_display_disconnect(info.display);
745
746 return 0;
747 }
748