hw/hid.h

   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 */