| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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_t { |
| 31 | seq_oss_devinfo_t *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 | seq_oss_timer_t *snd_seq_oss_timer_new(seq_oss_devinfo_t *dp); |
| 41 | void snd_seq_oss_timer_delete(seq_oss_timer_t *dp); |
| 42 | |
| 43 | int snd_seq_oss_timer_start(seq_oss_timer_t *timer); |
| 44 | int snd_seq_oss_timer_stop(seq_oss_timer_t *timer); |
| 45 | int snd_seq_oss_timer_continue(seq_oss_timer_t *timer); |
| 46 | int snd_seq_oss_timer_tempo(seq_oss_timer_t *timer, int value); |
| 47 | #define snd_seq_oss_timer_reset snd_seq_oss_timer_start |
| 48 | |
| 49 | int snd_seq_oss_timer_ioctl(seq_oss_timer_t *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(seq_oss_timer_t *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(seq_oss_timer_t *timer) |
| 66 | { |
| 67 | return timer->realtime; |
| 68 | } |
| 69 | |
| 70 | #endif |