sound/core/seq/oss/seq_oss_timer.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * OSS compatible sequencer driver
   4  * timer handling routines
   5  *
   6  * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
   7  */
   8
   9 #ifndef __SEQ_OSS_TIMER_H
  10 #define __SEQ_OSS_TIMER_H
  11
  12 #include "seq_oss_device.h"
  13
  14 /*
  15  * timer information definition
  16  */
  17 struct seq_oss_timer {
  18         struct seq_oss_devinfo *dp;
  19         reltime_t cur_tick;
  20         int realtime;
  21         int running;
  22         int tempo, ppq; /* ALSA queue */
  23         int oss_tempo, oss_timebase;
  24 };
  25
  26
  27 struct seq_oss_timer *snd_seq_oss_timer_new(struct seq_oss_devinfo *dp);
  28 void snd_seq_oss_timer_delete(struct seq_oss_timer *dp);
  29
  30 int snd_seq_oss_timer_start(struct seq_oss_timer *timer);
  31 int snd_seq_oss_timer_stop(struct seq_oss_timer *timer);
  32 int snd_seq_oss_timer_continue(struct seq_oss_timer *timer);
  33 int snd_seq_oss_timer_tempo(struct seq_oss_timer *timer, int value);
  34 #define snd_seq_oss_timer_reset  snd_seq_oss_timer_start
  35
  36 int snd_seq_oss_timer_ioctl(struct seq_oss_timer *timer, unsigned int cmd, int __user *arg);
  37
  38 /*
  39  * get current processed time
  40  */
  41 static inline abstime_t
  42 snd_seq_oss_timer_cur_tick(struct seq_oss_timer *timer)
  43 {
  44         return timer->cur_tick;
  45 }
  46
  47
  48 /*
  49  * is realtime event?
  50  */
  51 static inline int
  52 snd_seq_oss_timer_is_realtime(struct seq_oss_timer *timer)
  53 {
  54         return timer->realtime;
  55 }
  56
  57 #endif