WIP FPC-III support
[linux/fpc-iii.git] / sound / core / seq / oss / seq_oss_readq.h
blob38d0c4682b29896ebe984f05201a50516ed8c9c0
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * OSS compatible sequencer driver
4 * read fifo queue
6 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
7 */
9 #ifndef __SEQ_OSS_READQ_H
10 #define __SEQ_OSS_READQ_H
12 #include "seq_oss_device.h"
16 * definition of read queue
18 struct seq_oss_readq {
19 union evrec *q;
20 int qlen;
21 int maxlen;
22 int head, tail;
23 unsigned long pre_event_timeout;
24 unsigned long input_time;
25 wait_queue_head_t midi_sleep;
26 spinlock_t lock;
29 struct seq_oss_readq *snd_seq_oss_readq_new(struct seq_oss_devinfo *dp, int maxlen);
30 void snd_seq_oss_readq_delete(struct seq_oss_readq *q);
31 void snd_seq_oss_readq_clear(struct seq_oss_readq *readq);
32 unsigned int snd_seq_oss_readq_poll(struct seq_oss_readq *readq, struct file *file, poll_table *wait);
33 int snd_seq_oss_readq_puts(struct seq_oss_readq *readq, int dev, unsigned char *data, int len);
34 int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev,
35 struct snd_seq_event *ev);
36 int snd_seq_oss_readq_put_event(struct seq_oss_readq *readq, union evrec *ev);
37 int snd_seq_oss_readq_put_timestamp(struct seq_oss_readq *readq, unsigned long curt, int seq_mode);
38 int snd_seq_oss_readq_pick(struct seq_oss_readq *q, union evrec *rec);
39 void snd_seq_oss_readq_wait(struct seq_oss_readq *q);
40 void snd_seq_oss_readq_free(struct seq_oss_readq *q);
42 #define snd_seq_oss_readq_lock(q, flags) spin_lock_irqsave(&(q)->lock, flags)
43 #define snd_seq_oss_readq_unlock(q, flags) spin_unlock_irqrestore(&(q)->lock, flags)
45 #endif