/* * OSS compatible sequencer driver * read fifo queue * * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #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