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)); } }