/* Update the keyboard status; this will handle debounce handling as well as
queueing keypresses for later usage. The key press queue uses 16-bit
words so that we can store "special" keys as such. This needs to be called
fairly periodically if you're expecting keyboard input. */
static void kbd_check_poll(maple_frame_t *frm) {
kbd_state_t *state;
kbd_cond_t *cond;
int i, p;
state = (kbd_state_t *)frm->dev->status;
cond = (kbd_cond_t *)&state->cond;
/* Check the shift state */
state->shift_keys = cond->modifiers;
/* Process all pressed keys */
for (i=0; i<6; i++) {
if (cond->keys[i] != 0) {
p = state->matrix[cond->keys[i]];
state->matrix[cond->keys[i]] = 2; /* 2 == currently pressed */
if (p == 0)
kbd_enqueue(state, cond->keys[i]);
}
}
/* Now normalize the key matrix */
for (i=0; i<256; i++) {
if (state->matrix[i] == 1)
state->matrix[i] = 0;
else if (state->matrix[i] == 2)
state->matrix[i] = 1;
else if (state->matrix[i] != 0) {
assert_msg(0, "invalid key matrix array detected");
}
}
}
void
kd_enqsc(
Scancode sc)
{
kd_event ev;
ev.type = KEYBD_EVENT;
ev.time = time;
ev.value.sc = sc;
kbd_enqueue(&ev);
}
