63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
|
/*
|
||
|
|
* ALSA sequencer Priority Queue
|
||
|
|
* Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#ifndef __SND_SEQ_PRIOQ_H
|
||
|
|
#define __SND_SEQ_PRIOQ_H
|
||
|
|
|
||
|
|
#include "seq_memory.h"
|
||
|
|
|
||
|
|
|
||
|
|
/* === PRIOQ === */
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
snd_seq_event_cell_t* head; /* pointer to head of prioq */
|
||
|
|
snd_seq_event_cell_t* tail; /* pointer to tail of prioq */
|
||
|
|
int cells;
|
||
|
|
spinlock_t lock;
|
||
|
|
} prioq_t;
|
||
|
|
|
||
|
|
|
||
|
|
/* create new prioq (constructor) */
|
||
|
|
extern prioq_t *snd_seq_prioq_new(void);
|
||
|
|
|
||
|
|
/* delete prioq (destructor) */
|
||
|
|
extern void snd_seq_prioq_delete(prioq_t **fifo);
|
||
|
|
|
||
|
|
/* enqueue cell to prioq */
|
||
|
|
extern int snd_seq_prioq_cell_in(prioq_t *f, snd_seq_event_cell_t *cell);
|
||
|
|
|
||
|
|
/* dequeue cell from prioq */
|
||
|
|
extern snd_seq_event_cell_t *snd_seq_prioq_cell_out(prioq_t *f);
|
||
|
|
|
||
|
|
/* return number of events available in prioq */
|
||
|
|
extern int snd_seq_prioq_avail(prioq_t *f);
|
||
|
|
|
||
|
|
/* peek at cell at the head of the prioq */
|
||
|
|
extern snd_seq_event_cell_t *snd_seq_prioq_cell_peek(prioq_t *f);
|
||
|
|
|
||
|
|
/* client left queue */
|
||
|
|
extern void snd_seq_prioq_leave(prioq_t *f, int client, int timestamp);
|
||
|
|
|
||
|
|
/* Remove events */
|
||
|
|
void snd_seq_prioq_remove_events(prioq_t * f, int client,
|
||
|
|
snd_seq_remove_events_t *info);
|
||
|
|
|
||
|
|
#endif
|