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seq_prioq.h
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1 /*
2  * ALSA sequencer Priority Queue
3  * Copyright (c) 1998 by Frank van de Pol <[email protected]>
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 #ifndef __SND_SEQ_PRIOQ_H
22 #define __SND_SEQ_PRIOQ_H
23 
24 #include "seq_memory.h"
25 
26 
27 /* === PRIOQ === */
28 
29 struct snd_seq_prioq {
30  struct snd_seq_event_cell *head; /* pointer to head of prioq */
31  struct snd_seq_event_cell *tail; /* pointer to tail of prioq */
32  int cells;
34 };
35 
36 
37 /* create new prioq (constructor) */
38 struct snd_seq_prioq *snd_seq_prioq_new(void);
39 
40 /* delete prioq (destructor) */
42 
43 /* enqueue cell to prioq */
44 int snd_seq_prioq_cell_in(struct snd_seq_prioq *f, struct snd_seq_event_cell *cell);
45 
46 /* dequeue cell from prioq */
48 
49 /* return number of events available in prioq */
51 
52 /* peek at cell at the head of the prioq */
54 
55 /* client left queue */
56 void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp);
57 
58 /* Remove events */
60  struct snd_seq_remove_events *info);
61 
62 #endif