void
cdda_send_event(int event_type, char * drive) {
cdda_notify_t notify;
/* If there is no space for the message, it is dropped.
* This may happen if GUI gets blocked (unable to run cdda_timeout_callback()
* for several seconds), however it is not anticipated to happen very often.
* In such case these events are not very much of use, anyway.
*/
if (rb_write_space(cdda_notify_rb) >= sizeof(cdda_notify_t)) {
notify.event_type = event_type;
notify.device_path = strdup(drive);
rb_write(cdda_notify_rb, (char *)¬ify, sizeof(cdda_notify_t));
}
}
size_t
rb_write (rb_t * rb, const char *src, size_t cnt)
{
size_t free_cnt;
size_t cnt2;
size_t to_write;
size_t n1, n2;
if ((free_cnt = rb_write_space (rb)) == 0) {
return 0;
}
to_write = cnt > free_cnt ? free_cnt : cnt;
cnt2 = rb->write_ptr + to_write;
if (cnt2 > rb->size) {
n1 = rb->size - rb->write_ptr;
n2 = cnt2 & rb->size_mask;
} else {
n1 = to_write;
n2 = 0;
}
memcpy (&(rb->buf[rb->write_ptr]), src, n1);
rb->write_ptr += n1;
rb->write_ptr &= rb->size_mask;
if (n2) {
memcpy (&(rb->buf[rb->write_ptr]), src + n1, n2);
rb->write_ptr += n2;
rb->write_ptr &= rb->size_mask;
}
return to_write;
}
