Archipelago » qemu

#ifndef QEMU_HID_H

#define QEMU_HID_H

#include "migration/vmstate.h"

#define HID_MOUSE     1

#define HID_TABLET    2

#define HID_KEYBOARD  3

typedef struct HIDPointerEvent {

    int32_t xdx, ydy; /* relative iff it's a mouse, otherwise absolute */

    int32_t dz, buttons_state;

} HIDPointerEvent;

#define QUEUE_LENGTH    16 /* should be enough for a triple-click */

#define QUEUE_MASK      (QUEUE_LENGTH-1u)

#define QUEUE_INCR(v)   ((v)++, (v) &= QUEUE_MASK)

typedef struct HIDState HIDState;

typedef void (*HIDEventFunc)(HIDState *s);

typedef struct HIDMouseState {

    HIDPointerEvent queue[QUEUE_LENGTH];

    int mouse_grabbed;

    QEMUPutMouseEntry *eh_entry;

} HIDMouseState;

typedef struct HIDKeyboardState {

    uint32_t keycodes[QUEUE_LENGTH];

    uint16_t modifiers;

    uint8_t leds;

    uint8_t key[16];

    int32_t keys;

} HIDKeyboardState;

struct HIDState {

    union {

        HIDMouseState ptr;

        HIDKeyboardState kbd;

    };

    uint32_t head; /* index into circular queue */

    uint32_t n;

    int kind;

    int32_t protocol;

    uint8_t idle;

    int64_t next_idle_clock;

    HIDEventFunc event;

};

void hid_init(HIDState *hs, int kind, HIDEventFunc event);

void hid_reset(HIDState *hs);

void hid_free(HIDState *hs);

bool hid_has_events(HIDState *hs);

void hid_set_next_idle(HIDState *hs, int64_t curtime);

void hid_pointer_activate(HIDState *hs);

int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len);

int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len);

int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len);

extern const VMStateDescription vmstate_hid_keyboard_device;

#define VMSTATE_HID_KEYBOARD_DEVICE(_field, _state) {                \

    .name       = (stringify(_field)),                               \

    .size       = sizeof(HIDState),                                  \

    .vmsd       = &vmstate_hid_keyboard_device,                      \

    .flags      = VMS_STRUCT,                                        \

    .offset     = vmstate_offset_value(_state, _field, HIDState),    \

}

extern const VMStateDescription vmstate_hid_ptr_device;

#define VMSTATE_HID_POINTER_DEVICE(_field, _state) {                 \

    .name       = (stringify(_field)),                               \

    .size       = sizeof(HIDState),                                  \

    .vmsd       = &vmstate_hid_ptr_device,                           \

    .flags      = VMS_STRUCT,                                        \

    .offset     = vmstate_offset_value(_state, _field, HIDState),    \

}

#endif /* QEMU_HID_H */