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* OSS compatible sequencer driver
* timer handling routines
* Copyright (C) 1998,99 Takashi Iwai <>
* 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
* 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_TIMER_H
#define __SEQ_OSS_TIMER_H
#include "seq_oss_device.h"
* timer information definition
struct seq_oss_timer {
struct seq_oss_devinfo *dp;
reltime_t cur_tick;
int realtime;
int running;
int tempo, ppq; /* ALSA queue */
int oss_tempo, oss_timebase;
struct seq_oss_timer *snd_seq_oss_timer_new(struct seq_oss_devinfo *dp);
void snd_seq_oss_timer_delete(struct seq_oss_timer *dp);
int snd_seq_oss_timer_start(struct seq_oss_timer *timer);
int snd_seq_oss_timer_stop(struct seq_oss_timer *timer);
int snd_seq_oss_timer_continue(struct seq_oss_timer *timer);
int snd_seq_oss_timer_tempo(struct seq_oss_timer *timer, int value);
#define snd_seq_oss_timer_reset snd_seq_oss_timer_start
int snd_seq_oss_timer_ioctl(struct seq_oss_timer *timer, unsigned int cmd, int __user *arg);
* get current processed time
static inline abstime_t
snd_seq_oss_timer_cur_tick(struct seq_oss_timer *timer)
return timer->cur_tick;
* is realtime event?
static inline int
snd_seq_oss_timer_is_realtime(struct seq_oss_timer *timer)
return timer->realtime;