static int prioq_remove_match(struct snd_seq_remove_events *info,
struct snd_seq_event *ev)
{
int res;
if (info->remove_mode & SNDRV_SEQ_REMOVE_DEST) {
if (ev->dest.client != info->dest.client ||
ev->dest.port != info->dest.port)
return 0;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_DEST_CHANNEL) {
if (! snd_seq_ev_is_channel_type(ev))
return 0;
/* data.note.channel and data.control.channel are identical */
if (ev->data.note.channel != info->channel)
return 0;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_AFTER) {
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_TICK)
res = snd_seq_compare_tick_time(&ev->time.tick, &info->time.tick);
else
res = snd_seq_compare_real_time(&ev->time.time, &info->time.time);
if (!res)
return 0;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_BEFORE) {
if (info->remove_mode & SNDRV_SEQ_REMOVE_TIME_TICK)
res = snd_seq_compare_tick_time(&ev->time.tick, &info->time.tick);
else
res = snd_seq_compare_real_time(&ev->time.time, &info->time.time);
if (res)
return 0;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_EVENT_TYPE) {
if (ev->type != info->type)
return 0;
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_IGNORE_OFF) {
/* Do not remove off events */
switch (ev->type) {
case SNDRV_SEQ_EVENT_NOTEOFF:
/* case SNDRV_SEQ_EVENT_SAMPLE_STOP: */
return 0;
default:
break;
}
}
if (info->remove_mode & SNDRV_SEQ_REMOVE_TAG_MATCH) {
if (info->tag != ev->tag)
return 0;
}
return 1;
}
void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
{
unsigned long flags;
struct snd_seq_event_cell *cell;
if (q == NULL)
return;
/* make this function non-reentrant */
spin_lock_irqsave(&q->check_lock, flags);
if (q->check_blocked) {
q->check_again = 1;
spin_unlock_irqrestore(&q->check_lock, flags);
return; /* other thread is already checking queues */
}
q->check_blocked = 1;
spin_unlock_irqrestore(&q->check_lock, flags);
__again:
/* Process tick queue... */
while ((cell = snd_seq_prioq_cell_peek(q->tickq)) != NULL) {
if (snd_seq_compare_tick_time(&q->timer->tick.cur_tick,
&cell->event.time.tick)) {
cell = snd_seq_prioq_cell_out(q->tickq);
if (cell)
snd_seq_dispatch_event(cell, atomic, hop);
} else {
/* event remains in the queue */
break;
}
}
/* Process time queue... */
while ((cell = snd_seq_prioq_cell_peek(q->timeq)) != NULL) {
if (snd_seq_compare_real_time(&q->timer->cur_time,
&cell->event.time.time)) {
cell = snd_seq_prioq_cell_out(q->timeq);
if (cell)
snd_seq_dispatch_event(cell, atomic, hop);
} else {
/* event remains in the queue */
break;
}
}
/* free lock */
spin_lock_irqsave(&q->check_lock, flags);
if (q->check_again) {
q->check_again = 0;
spin_unlock_irqrestore(&q->check_lock, flags);
goto __again;
}
q->check_blocked = 0;
spin_unlock_irqrestore(&q->check_lock, flags);
}
/* return 1 if a >= b; 0 */
static inline int compare_timestamp(snd_seq_event_t * a, snd_seq_event_t * b)
{
if ((a->flags & SNDRV_SEQ_TIME_STAMP_MASK) == SNDRV_SEQ_TIME_STAMP_TICK) {
/* compare ticks */
return (snd_seq_compare_tick_time(&a->time.tick, &b->time.tick));
} else {
/* compare real time */
return (snd_seq_compare_real_time(&a->time.time, &b->time.time));
}
}
