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buffyboard: send EV_KEY and EV_SYN simultaneously

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Vladimir Stoiakin 2025-11-10 14:33:23 +00:00 • committed by Johannes Marbach
parent bb4c07d60f
commit ff388e4ad8
1 changed files with 23 additions and 26 deletions
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49
buffyboard/uinput_device.c
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@ -24,7 +24,20 @@
*/
static int fd = -1;
struct input_event event;
static struct input_event events[2] = {
{ .time.tv_sec = 0,
.time.tv_usec = 0,
.type = EV_KEY,
.code = 0,
.value = 0
},
{ .time.tv_sec = 0,
.time.tv_usec = 0,
.type = EV_SYN,
.code = SYN_REPORT,
.value = 0
}
};
/**
@ -32,44 +45,30 @@ struct input_event event;
*/
/**
* Emit an event on the device.
* @param type event type
* Emit a key event on the device.
* @param code event code
* @param value event value
* @return true if emitting the event was succesful, false otherwise
*/
static bool uinput_device_emit(int type, int code, int value);
/**
* Emit a synchronisation event on the device
* @return true if emitting the event was succesful, false otherwise
*/
static bool uinput_device_synchronise();
static bool emit_key(int code, int value);
/**
* Static functions
*/
static bool uinput_device_emit(int type, int code, int value) {
event.type = type;
event.code = code;
event.value = value;
event.input_event_sec = 0;
event.input_event_usec = 0;
static bool emit_key(int code, int value) {
events[0].code = code;
events[0].value = value;
if (write(fd, &event, sizeof(event)) != sizeof(event)) {
perror("Could not emit event");
if (write(fd, events, sizeof(events)) != sizeof(events)) {
bbx_log(BBX_LOG_LEVEL_WARNING, "Could not emit events");
return false;
}
return true;
}
static bool uinput_device_synchronise() {
return uinput_device_emit(EV_SYN, SYN_REPORT, 0);
}
/**
* Public functions
@ -110,15 +109,13 @@ bool bb_uinput_device_init(const int * const keycodes, int num_keycodes) {
return false;
}
memset(&event, 0, sizeof(event));
return true;
}
bool bb_uinput_device_emit_key_down(int keycode) {
return uinput_device_emit(EV_KEY, keycode, 1) && uinput_device_synchronise();
return emit_key(keycode, 1);
}
bool bb_uinput_device_emit_key_up(int keycode) {
return uinput_device_emit(EV_KEY, keycode, 0) && uinput_device_synchronise();
return emit_key(keycode, 0);
}