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1 #ifndef QEMU_HID_H
2 #define QEMU_HID_H
3
4 #define HID_MOUSE     1
5 #define HID_TABLET    2
6 #define HID_KEYBOARD  3
7
8 typedef struct HIDPointerEvent {
9     int32_t xdx, ydy; /* relative iff it's a mouse, otherwise absolute */
10     int32_t dz, buttons_state;
11 } HIDPointerEvent;
12
13 #define QUEUE_LENGTH    16 /* should be enough for a triple-click */
14 #define QUEUE_MASK      (QUEUE_LENGTH-1u)
15 #define QUEUE_INCR(v)   ((v)++, (v) &= QUEUE_MASK)
16
17 typedef struct HIDState HIDState;
18 typedef void (*HIDEventFunc)(HIDState *s);
19
20 typedef struct HIDMouseState {
21     HIDPointerEvent queue[QUEUE_LENGTH];
22     int mouse_grabbed;
23     QEMUPutMouseEntry *eh_entry;
24 } HIDMouseState;
25
26 typedef struct HIDKeyboardState {
27     uint32_t keycodes[QUEUE_LENGTH];
28     uint16_t modifiers;
29     uint8_t leds;
30     uint8_t key[16];
31     int32_t keys;
32 } HIDKeyboardState;
33
34 struct HIDState {
35     union {
36         HIDMouseState ptr;
37         HIDKeyboardState kbd;
38     };
39     uint32_t head; /* index into circular queue */
40     uint32_t n;
41     int kind;
42     int32_t protocol;
43     uint8_t idle;
44     int64_t next_idle_clock;
45     HIDEventFunc event;
46 };
47
48 void hid_init(HIDState *hs, int kind, HIDEventFunc event);
49 void hid_reset(HIDState *hs);
50 void hid_free(HIDState *hs);
51
52 bool hid_has_events(HIDState *hs);
53 void hid_set_next_idle(HIDState *hs, int64_t curtime);
54 void hid_pointer_activate(HIDState *hs);
55 int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len);
56 int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len);
57 int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len);
58
59 #endif /* QEMU_HID_H */
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