/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * OSS compatible sequencer driver * read fifo queue * * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> */ #ifndef __SEQ_OSS_READQ_H #define __SEQ_OSS_READQ_H #include "seq_oss_device.h" /* * definition of read queue */ struct seq_oss_readq { union evrec *q; int qlen; int maxlen; int head, tail; unsigned long pre_event_timeout; unsigned long input_time; wait_queue_head_t midi_sleep; spinlock_t lock; }; struct seq_oss_readq *snd_seq_oss_readq_new(struct seq_oss_devinfo *dp, int maxlen); void snd_seq_oss_readq_delete(struct seq_oss_readq *q); void snd_seq_oss_readq_clear(struct seq_oss_readq *readq); unsigned int snd_seq_oss_readq_poll(struct seq_oss_readq *readq, struct file *file, poll_table *wait); int snd_seq_oss_readq_puts(struct seq_oss_readq *readq, int dev, unsigned char *data, int len); int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev, struct snd_seq_event *ev); int snd_seq_oss_readq_put_event(struct seq_oss_readq *readq, union evrec *ev); int snd_seq_oss_readq_put_timestamp(struct seq_oss_readq *readq, unsigned long curt, int seq_mode); int snd_seq_oss_readq_pick(struct seq_oss_readq *q, union evrec *rec); void snd_seq_oss_readq_wait(struct seq_oss_readq *q); void snd_seq_oss_readq_free(struct seq_oss_readq *q); #define snd_seq_oss_readq_lock(q, flags) spin_lock_irqsave(&(q)->lock, flags) #define snd_seq_oss_readq_unlock(q, flags) spin_unlock_irqrestore(&(q)->lock, flags) #endif