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https://dev.lirent.ru/Vatrog/vm-automation-signaling.git
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40 lines
1.7 KiB
C
40 lines
1.7 KiB
C
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#ifndef VMCTL_DRIVER_H
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#define VMCTL_DRIVER_H
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#include "vmctl.h"
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#include "qmp.h"
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/* driver.h — input-driver vtable, the concrete vmctl handle, and the shared
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* event-kind enum. The event kind is the SINGLE source of truth that every
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* driver switches on (never on magic numbers). */
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typedef enum {
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VMCTL_EV_ABS, VMCTL_EV_REL, VMCTL_EV_BTN, VMCTL_EV_KEY, VMCTL_EV_SCROLL
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} vmctl_ev_kind;
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typedef struct {
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int (*send)(vmctl_t* v, const vmctl_batch* b); /* deliver an input batch */
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void (*close)(vmctl_t* v); /* release driver resources */
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} vmctl_driver_ops;
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struct vmctl {
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vmctl_driver_ops ops;
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vmctl_driver driver;
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qmp_conn* qmp; /* control channel; NULL if none */
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int ui_fd_a; /* uinput driver: device A; -1 for QMP */
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int ui_fd_b; /* uinput driver: device B (BOTH); -1 */
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int ptr_mode; /* uinput driver: VMCTL_PTR_*; 0 for QMP */
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/* Held-state receipt: key/btn down-bits as THIS handle last actuated them
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* (not guest truth). Written only after a successful send in
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* vmctl_batch_send; the send path never reads them. Zero-initialised by
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* calloc at open = all up. Single-threaded (one handle owner): no locks. */
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unsigned char keys_held[VMCTL_KEYS_SNAPSHOT_BYTES]; /* evdev-indexed key down-bits */
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unsigned btns_held; /* VMCTL_BTN_* 0..7 down-bits */
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};
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/* driver factories (called from open.c per cfg->driver) */
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vmctl_t* vmctl_open_qmp_driver (const vmctl_config* cfg);
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vmctl_t* vmctl_open_uinput_driver(const vmctl_config* cfg);
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#endif /* VMCTL_DRIVER_H */
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