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