1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * OSS compatible sequencer driver |
4 | * read fifo queue |
5 | * |
6 | * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> |
7 | */ |
8 | |
9 | #ifndef __SEQ_OSS_READQ_H |
10 | #define __SEQ_OSS_READQ_H |
11 | |
12 | #include "seq_oss_device.h" |
13 | |
14 | |
15 | /* |
16 | * definition of read queue |
17 | */ |
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; |
27 | }; |
28 | |
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); |
41 | |
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) |
44 | |
45 | #endif |
46 | |