seq/oss/seq_oss_timer.c

24 static void calc_alsa_tempo(struct seq_oss_timer *timer);
29  * create and register a new timer.
54  * delete timer.
55  * if no more timer exists, stop the queue.
70  *        0 : not a timer event -- enqueue this event
116 calc_alsa_tempo(struct seq_oss_timer *timer)
118 	timer->tempo = (60 * 1000000) / timer->oss_tempo;
119 	timer->ppq = timer->oss_timebase;
124  * dispatch a timer event
147 snd_seq_oss_timer_start(struct seq_oss_timer *timer)
149 	struct seq_oss_devinfo *dp = timer->dp;
152 	if (timer->running)
153 		snd_seq_oss_timer_stop(timer);
157 	tmprec.ppq = timer->ppq;
158 	tmprec.tempo = timer->tempo;
162 	timer->running = 1;
163 	timer->cur_tick = 0;
172 snd_seq_oss_timer_stop(struct seq_oss_timer *timer)
174 	if (! timer->running)
176 	send_timer_event(timer->dp, SNDRV_SEQ_EVENT_STOP, 0);
177 	timer->running = 0;
186 snd_seq_oss_timer_continue(struct seq_oss_timer *timer)
188 	if (timer->running)
190 	send_timer_event(timer->dp, SNDRV_SEQ_EVENT_CONTINUE, 0);
191 	timer->running = 1;
200 snd_seq_oss_timer_tempo(struct seq_oss_timer *timer, int value)
206 	timer->oss_tempo = value;
207 	calc_alsa_tempo(timer);
208 	if (timer->running)
209 		send_timer_event(timer->dp, SNDRV_SEQ_EVENT_TEMPO, timer->tempo);
218 snd_seq_oss_timer_ioctl(struct seq_oss_timer *timer, unsigned int cmd, int __user *arg)
228 		value = ((timer->oss_tempo * timer->oss_timebase) + 30) / 60;
232 	if (timer->dp->seq_mode == SNDRV_SEQ_OSS_MODE_SYNTH)
237 		return snd_seq_oss_timer_start(timer);
239 		return snd_seq_oss_timer_stop(timer);
241 		return snd_seq_oss_timer_continue(timer);
245 		return snd_seq_oss_timer_tempo(timer, value);
253 		timer->oss_timebase = value;
254 		calc_alsa_tempo(timer);