1#ifndef QEMU_HID_H
2#define QEMU_HID_H
3
4#include "ui/input.h"
5
6#define HID_MOUSE 1
7#define HID_TABLET 2
8#define HID_KEYBOARD 3
9
10typedef struct HIDPointerEvent {
11 int32_t xdx, ydy; /* relative iff it's a mouse, otherwise absolute */
12 int32_t dz, buttons_state;
13} HIDPointerEvent;
14
15#define QUEUE_LENGTH 16 /* should be enough for a triple-click */
16#define QUEUE_MASK (QUEUE_LENGTH-1u)
17#define QUEUE_INCR(v) ((v)++, (v) &= QUEUE_MASK)
18
19typedef struct HIDState HIDState;
20typedef void (*HIDEventFunc)(HIDState *s);
21
22typedef struct HIDMouseState {
23 HIDPointerEvent queue[QUEUE_LENGTH];
24 int mouse_grabbed;
25} HIDMouseState;
26
27typedef struct HIDKeyboardState {
28 uint32_t keycodes[QUEUE_LENGTH];
29 uint16_t modifiers;
30 uint8_t leds;
31 uint8_t key[16];
32 int32_t keys;
33} HIDKeyboardState;
34
35struct HIDState {
36 union {
37 HIDMouseState ptr;
38 HIDKeyboardState kbd;
39 };
40 uint32_t head; /* index into circular queue */
41 uint32_t n;
42 int kind;
43 int32_t protocol;
44 uint8_t idle;
45 bool idle_pending;
46 QEMUTimer *idle_timer;
47 HIDEventFunc event;
48 QemuInputHandlerState *s;
49};
50
51void hid_init(HIDState *hs, int kind, HIDEventFunc event);
52void hid_reset(HIDState *hs);
53void hid_free(HIDState *hs);
54
55bool hid_has_events(HIDState *hs);
56void hid_set_next_idle(HIDState *hs);
57void hid_pointer_activate(HIDState *hs);
58int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len);
59int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len);
60int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len);
61
62extern const VMStateDescription vmstate_hid_keyboard_device;
63
64#define VMSTATE_HID_KEYBOARD_DEVICE(_field, _state) { \
65 .name = (stringify(_field)), \
66 .size = sizeof(HIDState), \
67 .vmsd = &vmstate_hid_keyboard_device, \
68 .flags = VMS_STRUCT, \
69 .offset = vmstate_offset_value(_state, _field, HIDState), \
70}
71
72extern const VMStateDescription vmstate_hid_ptr_device;
73
74#define VMSTATE_HID_POINTER_DEVICE(_field, _state) { \
75 .name = (stringify(_field)), \
76 .size = sizeof(HIDState), \
77 .vmsd = &vmstate_hid_ptr_device, \
78 .flags = VMS_STRUCT, \
79 .offset = vmstate_offset_value(_state, _field, HIDState), \
80}
81
82
83#endif /* QEMU_HID_H */
84