1 /* 2 * OSS compatible sequencer driver 3 * timer handling routines 4 * 5 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22 #ifndef __SEQ_OSS_TIMER_H 23 #define __SEQ_OSS_TIMER_H 24 25 #include "seq_oss_device.h" 26 27 /* 28 * timer information definition 29 */ 30 struct seq_oss_timer { 31 struct seq_oss_devinfo *dp; 32 reltime_t cur_tick; 33 int realtime; 34 int running; 35 int tempo, ppq; /* ALSA queue */ 36 int oss_tempo, oss_timebase; 37 }; 38 39 40 struct seq_oss_timer *snd_seq_oss_timer_new(struct seq_oss_devinfo *dp); 41 void snd_seq_oss_timer_delete(struct seq_oss_timer *dp); 42 43 int snd_seq_oss_timer_start(struct seq_oss_timer *timer); 44 int snd_seq_oss_timer_stop(struct seq_oss_timer *timer); 45 int snd_seq_oss_timer_continue(struct seq_oss_timer *timer); 46 int snd_seq_oss_timer_tempo(struct seq_oss_timer *timer, int value); 47 #define snd_seq_oss_timer_reset snd_seq_oss_timer_start 48 49 int snd_seq_oss_timer_ioctl(struct seq_oss_timer *timer, unsigned int cmd, int __user *arg); 50 51 /* 52 * get current processed time 53 */ 54 static inline abstime_t 55 snd_seq_oss_timer_cur_tick(struct seq_oss_timer *timer) 56 { 57 return timer->cur_tick; 58 } 59 60 61 /* 62 * is realtime event? 63 */ 64 static inline int 65 snd_seq_oss_timer_is_realtime(struct seq_oss_timer *timer) 66 { 67 return timer->realtime; 68 } 69 70 #endif 71