quorum: Inline quorum_aio_cb()
[qemu.git] / ui / input.c
1 #include "qemu/osdep.h"
2 #include "hw/qdev.h"
3 #include "sysemu/sysemu.h"
4 #include "qapi-types.h"
5 #include "qemu/error-report.h"
6 #include "qmp-commands.h"
7 #include "trace.h"
8 #include "ui/input.h"
9 #include "ui/console.h"
10 #include "sysemu/replay.h"
11
12 struct QemuInputHandlerState {
13 DeviceState *dev;
14 QemuInputHandler *handler;
15 int id;
16 int events;
17 QemuConsole *con;
18 QTAILQ_ENTRY(QemuInputHandlerState) node;
19 };
20
21 typedef struct QemuInputEventQueue QemuInputEventQueue;
22 struct QemuInputEventQueue {
23 enum {
24 QEMU_INPUT_QUEUE_DELAY = 1,
25 QEMU_INPUT_QUEUE_EVENT,
26 QEMU_INPUT_QUEUE_SYNC,
27 } type;
28 QEMUTimer *timer;
29 uint32_t delay_ms;
30 QemuConsole *src;
31 InputEvent *evt;
32 QTAILQ_ENTRY(QemuInputEventQueue) node;
33 };
34
35 static QTAILQ_HEAD(, QemuInputHandlerState) handlers =
36 QTAILQ_HEAD_INITIALIZER(handlers);
37 static NotifierList mouse_mode_notifiers =
38 NOTIFIER_LIST_INITIALIZER(mouse_mode_notifiers);
39
40 static QTAILQ_HEAD(QemuInputEventQueueHead, QemuInputEventQueue) kbd_queue =
41 QTAILQ_HEAD_INITIALIZER(kbd_queue);
42 static QEMUTimer *kbd_timer;
43 static uint32_t kbd_default_delay_ms = 10;
44
45 QemuInputHandlerState *qemu_input_handler_register(DeviceState *dev,
46 QemuInputHandler *handler)
47 {
48 QemuInputHandlerState *s = g_new0(QemuInputHandlerState, 1);
49 static int id = 1;
50
51 s->dev = dev;
52 s->handler = handler;
53 s->id = id++;
54 QTAILQ_INSERT_TAIL(&handlers, s, node);
55
56 qemu_input_check_mode_change();
57 return s;
58 }
59
60 void qemu_input_handler_activate(QemuInputHandlerState *s)
61 {
62 QTAILQ_REMOVE(&handlers, s, node);
63 QTAILQ_INSERT_HEAD(&handlers, s, node);
64 qemu_input_check_mode_change();
65 }
66
67 void qemu_input_handler_deactivate(QemuInputHandlerState *s)
68 {
69 QTAILQ_REMOVE(&handlers, s, node);
70 QTAILQ_INSERT_TAIL(&handlers, s, node);
71 qemu_input_check_mode_change();
72 }
73
74 void qemu_input_handler_unregister(QemuInputHandlerState *s)
75 {
76 QTAILQ_REMOVE(&handlers, s, node);
77 g_free(s);
78 qemu_input_check_mode_change();
79 }
80
81 void qemu_input_handler_bind(QemuInputHandlerState *s,
82 const char *device_id, int head,
83 Error **errp)
84 {
85 QemuConsole *con;
86 Error *err = NULL;
87
88 con = qemu_console_lookup_by_device_name(device_id, head, &err);
89 if (err) {
90 error_propagate(errp, err);
91 return;
92 }
93
94 s->con = con;
95 }
96
97 static QemuInputHandlerState*
98 qemu_input_find_handler(uint32_t mask, QemuConsole *con)
99 {
100 QemuInputHandlerState *s;
101
102 QTAILQ_FOREACH(s, &handlers, node) {
103 if (s->con == NULL || s->con != con) {
104 continue;
105 }
106 if (mask & s->handler->mask) {
107 return s;
108 }
109 }
110
111 QTAILQ_FOREACH(s, &handlers, node) {
112 if (s->con != NULL) {
113 continue;
114 }
115 if (mask & s->handler->mask) {
116 return s;
117 }
118 }
119 return NULL;
120 }
121
122 void qmp_input_send_event(bool has_device, const char *device,
123 bool has_head, int64_t head,
124 InputEventList *events, Error **errp)
125 {
126 InputEventList *e;
127 QemuConsole *con;
128 Error *err = NULL;
129
130 con = NULL;
131 if (has_device) {
132 if (!has_head) {
133 head = 0;
134 }
135 con = qemu_console_lookup_by_device_name(device, head, &err);
136 if (err) {
137 error_propagate(errp, err);
138 return;
139 }
140 }
141
142 if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
143 error_setg(errp, "VM not running");
144 return;
145 }
146
147 for (e = events; e != NULL; e = e->next) {
148 InputEvent *event = e->value;
149
150 if (!qemu_input_find_handler(1 << event->type, con)) {
151 error_setg(errp, "Input handler not found for "
152 "event type %s",
153 InputEventKind_lookup[event->type]);
154 return;
155 }
156 }
157
158 for (e = events; e != NULL; e = e->next) {
159 InputEvent *event = e->value;
160
161 qemu_input_event_send(con, event);
162 }
163
164 qemu_input_event_sync();
165 }
166
167 static void qemu_input_transform_abs_rotate(InputEvent *evt)
168 {
169 InputMoveEvent *move = evt->u.abs.data;
170 switch (graphic_rotate) {
171 case 90:
172 if (move->axis == INPUT_AXIS_X) {
173 move->axis = INPUT_AXIS_Y;
174 } else if (move->axis == INPUT_AXIS_Y) {
175 move->axis = INPUT_AXIS_X;
176 move->value = INPUT_EVENT_ABS_SIZE - 1 - move->value;
177 }
178 break;
179 case 180:
180 move->value = INPUT_EVENT_ABS_SIZE - 1 - move->value;
181 break;
182 case 270:
183 if (move->axis == INPUT_AXIS_X) {
184 move->axis = INPUT_AXIS_Y;
185 move->value = INPUT_EVENT_ABS_SIZE - 1 - move->value;
186 } else if (move->axis == INPUT_AXIS_Y) {
187 move->axis = INPUT_AXIS_X;
188 }
189 break;
190 }
191 }
192
193 static void qemu_input_event_trace(QemuConsole *src, InputEvent *evt)
194 {
195 const char *name;
196 int qcode, idx = -1;
197 InputKeyEvent *key;
198 InputBtnEvent *btn;
199 InputMoveEvent *move;
200
201 if (src) {
202 idx = qemu_console_get_index(src);
203 }
204 switch (evt->type) {
205 case INPUT_EVENT_KIND_KEY:
206 key = evt->u.key.data;
207 switch (key->key->type) {
208 case KEY_VALUE_KIND_NUMBER:
209 qcode = qemu_input_key_number_to_qcode(key->key->u.number.data);
210 name = QKeyCode_lookup[qcode];
211 trace_input_event_key_number(idx, key->key->u.number.data,
212 name, key->down);
213 break;
214 case KEY_VALUE_KIND_QCODE:
215 name = QKeyCode_lookup[key->key->u.qcode.data];
216 trace_input_event_key_qcode(idx, name, key->down);
217 break;
218 case KEY_VALUE_KIND__MAX:
219 /* keep gcc happy */
220 break;
221 }
222 break;
223 case INPUT_EVENT_KIND_BTN:
224 btn = evt->u.btn.data;
225 name = InputButton_lookup[btn->button];
226 trace_input_event_btn(idx, name, btn->down);
227 break;
228 case INPUT_EVENT_KIND_REL:
229 move = evt->u.rel.data;
230 name = InputAxis_lookup[move->axis];
231 trace_input_event_rel(idx, name, move->value);
232 break;
233 case INPUT_EVENT_KIND_ABS:
234 move = evt->u.abs.data;
235 name = InputAxis_lookup[move->axis];
236 trace_input_event_abs(idx, name, move->value);
237 break;
238 case INPUT_EVENT_KIND__MAX:
239 /* keep gcc happy */
240 break;
241 }
242 }
243
244 static void qemu_input_queue_process(void *opaque)
245 {
246 struct QemuInputEventQueueHead *queue = opaque;
247 QemuInputEventQueue *item;
248
249 g_assert(!QTAILQ_EMPTY(queue));
250 item = QTAILQ_FIRST(queue);
251 g_assert(item->type == QEMU_INPUT_QUEUE_DELAY);
252 QTAILQ_REMOVE(queue, item, node);
253 g_free(item);
254
255 while (!QTAILQ_EMPTY(queue)) {
256 item = QTAILQ_FIRST(queue);
257 switch (item->type) {
258 case QEMU_INPUT_QUEUE_DELAY:
259 timer_mod(item->timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)
260 + item->delay_ms);
261 return;
262 case QEMU_INPUT_QUEUE_EVENT:
263 qemu_input_event_send(item->src, item->evt);
264 qapi_free_InputEvent(item->evt);
265 break;
266 case QEMU_INPUT_QUEUE_SYNC:
267 qemu_input_event_sync();
268 break;
269 }
270 QTAILQ_REMOVE(queue, item, node);
271 g_free(item);
272 }
273 }
274
275 static void qemu_input_queue_delay(struct QemuInputEventQueueHead *queue,
276 QEMUTimer *timer, uint32_t delay_ms)
277 {
278 QemuInputEventQueue *item = g_new0(QemuInputEventQueue, 1);
279 bool start_timer = QTAILQ_EMPTY(queue);
280
281 item->type = QEMU_INPUT_QUEUE_DELAY;
282 item->delay_ms = delay_ms;
283 item->timer = timer;
284 QTAILQ_INSERT_TAIL(queue, item, node);
285
286 if (start_timer) {
287 timer_mod(item->timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)
288 + item->delay_ms);
289 }
290 }
291
292 static void qemu_input_queue_event(struct QemuInputEventQueueHead *queue,
293 QemuConsole *src, InputEvent *evt)
294 {
295 QemuInputEventQueue *item = g_new0(QemuInputEventQueue, 1);
296
297 item->type = QEMU_INPUT_QUEUE_EVENT;
298 item->src = src;
299 item->evt = evt;
300 QTAILQ_INSERT_TAIL(queue, item, node);
301 }
302
303 static void qemu_input_queue_sync(struct QemuInputEventQueueHead *queue)
304 {
305 QemuInputEventQueue *item = g_new0(QemuInputEventQueue, 1);
306
307 item->type = QEMU_INPUT_QUEUE_SYNC;
308 QTAILQ_INSERT_TAIL(queue, item, node);
309 }
310
311 void qemu_input_event_send_impl(QemuConsole *src, InputEvent *evt)
312 {
313 QemuInputHandlerState *s;
314
315 qemu_input_event_trace(src, evt);
316
317 /* pre processing */
318 if (graphic_rotate && (evt->type == INPUT_EVENT_KIND_ABS)) {
319 qemu_input_transform_abs_rotate(evt);
320 }
321
322 /* send event */
323 s = qemu_input_find_handler(1 << evt->type, src);
324 if (!s) {
325 return;
326 }
327 s->handler->event(s->dev, src, evt);
328 s->events++;
329 }
330
331 void qemu_input_event_send(QemuConsole *src, InputEvent *evt)
332 {
333 if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
334 return;
335 }
336
337 replay_input_event(src, evt);
338 }
339
340 void qemu_input_event_sync_impl(void)
341 {
342 QemuInputHandlerState *s;
343
344 trace_input_event_sync();
345
346 QTAILQ_FOREACH(s, &handlers, node) {
347 if (!s->events) {
348 continue;
349 }
350 if (s->handler->sync) {
351 s->handler->sync(s->dev);
352 }
353 s->events = 0;
354 }
355 }
356
357 void qemu_input_event_sync(void)
358 {
359 if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
360 return;
361 }
362
363 replay_input_sync_event();
364 }
365
366 InputEvent *qemu_input_event_new_key(KeyValue *key, bool down)
367 {
368 InputEvent *evt = g_new0(InputEvent, 1);
369 evt->u.key.data = g_new0(InputKeyEvent, 1);
370 evt->type = INPUT_EVENT_KIND_KEY;
371 evt->u.key.data->key = key;
372 evt->u.key.data->down = down;
373 return evt;
374 }
375
376 void qemu_input_event_send_key(QemuConsole *src, KeyValue *key, bool down)
377 {
378 InputEvent *evt;
379 evt = qemu_input_event_new_key(key, down);
380 if (QTAILQ_EMPTY(&kbd_queue)) {
381 qemu_input_event_send(src, evt);
382 qemu_input_event_sync();
383 qapi_free_InputEvent(evt);
384 } else {
385 qemu_input_queue_event(&kbd_queue, src, evt);
386 qemu_input_queue_sync(&kbd_queue);
387 }
388 }
389
390 void qemu_input_event_send_key_number(QemuConsole *src, int num, bool down)
391 {
392 KeyValue *key = g_new0(KeyValue, 1);
393 key->type = KEY_VALUE_KIND_NUMBER;
394 key->u.number.data = num;
395 qemu_input_event_send_key(src, key, down);
396 }
397
398 void qemu_input_event_send_key_qcode(QemuConsole *src, QKeyCode q, bool down)
399 {
400 KeyValue *key = g_new0(KeyValue, 1);
401 key->type = KEY_VALUE_KIND_QCODE;
402 key->u.qcode.data = q;
403 qemu_input_event_send_key(src, key, down);
404 }
405
406 void qemu_input_event_send_key_delay(uint32_t delay_ms)
407 {
408 if (!kbd_timer) {
409 kbd_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, qemu_input_queue_process,
410 &kbd_queue);
411 }
412 qemu_input_queue_delay(&kbd_queue, kbd_timer,
413 delay_ms ? delay_ms : kbd_default_delay_ms);
414 }
415
416 InputEvent *qemu_input_event_new_btn(InputButton btn, bool down)
417 {
418 InputEvent *evt = g_new0(InputEvent, 1);
419 evt->u.btn.data = g_new0(InputBtnEvent, 1);
420 evt->type = INPUT_EVENT_KIND_BTN;
421 evt->u.btn.data->button = btn;
422 evt->u.btn.data->down = down;
423 return evt;
424 }
425
426 void qemu_input_queue_btn(QemuConsole *src, InputButton btn, bool down)
427 {
428 InputEvent *evt;
429 evt = qemu_input_event_new_btn(btn, down);
430 qemu_input_event_send(src, evt);
431 qapi_free_InputEvent(evt);
432 }
433
434 void qemu_input_update_buttons(QemuConsole *src, uint32_t *button_map,
435 uint32_t button_old, uint32_t button_new)
436 {
437 InputButton btn;
438 uint32_t mask;
439
440 for (btn = 0; btn < INPUT_BUTTON__MAX; btn++) {
441 mask = button_map[btn];
442 if ((button_old & mask) == (button_new & mask)) {
443 continue;
444 }
445 qemu_input_queue_btn(src, btn, button_new & mask);
446 }
447 }
448
449 bool qemu_input_is_absolute(void)
450 {
451 QemuInputHandlerState *s;
452
453 s = qemu_input_find_handler(INPUT_EVENT_MASK_REL | INPUT_EVENT_MASK_ABS,
454 NULL);
455 return (s != NULL) && (s->handler->mask & INPUT_EVENT_MASK_ABS);
456 }
457
458 int qemu_input_scale_axis(int value, int size_in, int size_out)
459 {
460 if (size_in < 2) {
461 return size_out / 2;
462 }
463 return (int64_t)value * (size_out - 1) / (size_in - 1);
464 }
465
466 InputEvent *qemu_input_event_new_move(InputEventKind kind,
467 InputAxis axis, int value)
468 {
469 InputEvent *evt = g_new0(InputEvent, 1);
470 InputMoveEvent *move = g_new0(InputMoveEvent, 1);
471
472 evt->type = kind;
473 evt->u.rel.data = move; /* evt->u.rel is the same as evt->u.abs */
474 move->axis = axis;
475 move->value = value;
476 return evt;
477 }
478
479 void qemu_input_queue_rel(QemuConsole *src, InputAxis axis, int value)
480 {
481 InputEvent *evt;
482 evt = qemu_input_event_new_move(INPUT_EVENT_KIND_REL, axis, value);
483 qemu_input_event_send(src, evt);
484 qapi_free_InputEvent(evt);
485 }
486
487 void qemu_input_queue_abs(QemuConsole *src, InputAxis axis, int value, int size)
488 {
489 InputEvent *evt;
490 int scaled = qemu_input_scale_axis(value, size, INPUT_EVENT_ABS_SIZE);
491 evt = qemu_input_event_new_move(INPUT_EVENT_KIND_ABS, axis, scaled);
492 qemu_input_event_send(src, evt);
493 qapi_free_InputEvent(evt);
494 }
495
496 void qemu_input_check_mode_change(void)
497 {
498 static int current_is_absolute;
499 int is_absolute;
500
501 is_absolute = qemu_input_is_absolute();
502
503 if (is_absolute != current_is_absolute) {
504 trace_input_mouse_mode(is_absolute);
505 notifier_list_notify(&mouse_mode_notifiers, NULL);
506 }
507
508 current_is_absolute = is_absolute;
509 }
510
511 void qemu_add_mouse_mode_change_notifier(Notifier *notify)
512 {
513 notifier_list_add(&mouse_mode_notifiers, notify);
514 }
515
516 void qemu_remove_mouse_mode_change_notifier(Notifier *notify)
517 {
518 notifier_remove(notify);
519 }
520
521 MouseInfoList *qmp_query_mice(Error **errp)
522 {
523 MouseInfoList *mice_list = NULL;
524 MouseInfoList *info;
525 QemuInputHandlerState *s;
526 bool current = true;
527
528 QTAILQ_FOREACH(s, &handlers, node) {
529 if (!(s->handler->mask &
530 (INPUT_EVENT_MASK_REL | INPUT_EVENT_MASK_ABS))) {
531 continue;
532 }
533
534 info = g_new0(MouseInfoList, 1);
535 info->value = g_new0(MouseInfo, 1);
536 info->value->index = s->id;
537 info->value->name = g_strdup(s->handler->name);
538 info->value->absolute = s->handler->mask & INPUT_EVENT_MASK_ABS;
539 info->value->current = current;
540
541 current = false;
542 info->next = mice_list;
543 mice_list = info;
544 }
545
546 return mice_list;
547 }
548
549 void hmp_mouse_set(Monitor *mon, const QDict *qdict)
550 {
551 QemuInputHandlerState *s;
552 int index = qdict_get_int(qdict, "index");
553 int found = 0;
554
555 QTAILQ_FOREACH(s, &handlers, node) {
556 if (s->id != index) {
557 continue;
558 }
559 if (!(s->handler->mask & (INPUT_EVENT_MASK_REL |
560 INPUT_EVENT_MASK_ABS))) {
561 error_report("Input device '%s' is not a mouse", s->handler->name);
562 return;
563 }
564 found = 1;
565 qemu_input_handler_activate(s);
566 break;
567 }
568
569 if (!found) {
570 error_report("Mouse at index '%d' not found", index);
571 }
572
573 qemu_input_check_mode_change();
574 }