/*
* change queue's owner and permission
*/
int snd_seq_queue_set_owner(int queueid, int client, int locked)
{
struct snd_seq_queue *q = queueptr(queueid);
if (q == NULL)
return -EINVAL;
if (! queue_access_lock(q, client)) {
queuefree(q);
return -EPERM;
}
q->locked = locked ? 1 : 0;
q->owner = client;
queue_access_unlock(q);
queuefree(q);
return 0;
}
/*
* Queue control via timer control port:
* this function is exported as a callback of timer port.
*/
int snd_seq_control_queue(struct snd_seq_event *ev, int atomic, int hop)
{
struct snd_seq_queue *q;
snd_assert(ev != NULL, return -EINVAL);
q = queueptr(ev->data.queue.queue);
if (q == NULL)
return -EINVAL;
if (! queue_access_lock(q, ev->source.client)) {
queuefree(q);
return -EPERM;
}
snd_seq_queue_process_event(q, ev, atomic, hop);
queue_access_unlock(q);
queuefree(q);
return 0;
}
/* change queue tempo and ppq */
int snd_seq_queue_timer_set_tempo(int queueid, int client, snd_seq_queue_tempo_t *info)
{
queue_t *q = queueptr(queueid);
int result;
if (q == NULL)
return -EINVAL;
if (! queue_access_lock(q, client)) {
queuefree(q);
return -EPERM;
}
result = snd_seq_timer_set_tempo(q->timer, info->tempo);
if (result >= 0)
result = snd_seq_timer_set_ppq(q->timer, info->ppq);
if (result >= 0 && info->skew_base > 0)
result = snd_seq_timer_set_skew(q->timer, info->skew_value, info->skew_base);
queue_access_unlock(q);
queuefree(q);
return result;
}