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-rw-r--r--include/hw/input/hid.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/include/hw/input/hid.h b/include/hw/input/hid.h
new file mode 100644
index 0000000..56c71ed
--- /dev/null
+++ b/include/hw/input/hid.h
@@ -0,0 +1,83 @@
+#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;
+ bool idle_pending;
+ QEMUTimer *idle_timer;
+ 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);
+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 */
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