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- /* SPDX-License-Identifier: GPL-2.0-or-later */
- /*
- * ALSA sequencer Priority Queue
- * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
- */
- #ifndef __SND_SEQ_PRIOQ_H
- #define __SND_SEQ_PRIOQ_H
- #include "seq_memory.h"
- /* === PRIOQ === */
- struct snd_seq_prioq {
- struct snd_seq_event_cell *head; /* pointer to head of prioq */
- struct snd_seq_event_cell *tail; /* pointer to tail of prioq */
- int cells;
- spinlock_t lock;
- };
- /* create new prioq (constructor) */
- struct snd_seq_prioq *snd_seq_prioq_new(void);
- /* delete prioq (destructor) */
- void snd_seq_prioq_delete(struct snd_seq_prioq **fifo);
- /* enqueue cell to prioq */
- int snd_seq_prioq_cell_in(struct snd_seq_prioq *f, struct snd_seq_event_cell *cell);
- /* dequeue cell from prioq */
- struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
- void *current_time);
- /* return number of events available in prioq */
- int snd_seq_prioq_avail(struct snd_seq_prioq *f);
- /* client left queue */
- void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp);
- /* Remove events */
- void snd_seq_prioq_remove_events(struct snd_seq_prioq *f, int client,
- struct snd_seq_remove_events *info);
- #endif
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