/* * process one timing event * return 1 : event proceseed -- skip this event * 0 : not a timer event -- enqueue this event */ int snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *ev) { abstime_t parm = ev->t.time; if (ev->t.code == EV_TIMING) { switch (ev->t.cmd) { case TMR_WAIT_REL: parm += rec->cur_tick; rec->realtime = 0; /* continue to next */ case TMR_WAIT_ABS: if (parm == 0) { rec->realtime = 1; } else if (parm >= rec->cur_tick) { rec->realtime = 0; rec->cur_tick = parm; } return 1; /* skip this event */ case TMR_START: snd_seq_oss_timer_start(rec); return 1; } } else if (ev->s.code == SEQ_WAIT) { /* time = from 1 to 3 bytes */ parm = (ev->echo >> 8) & 0xffffff; if (parm > rec->cur_tick) { /* set next event time */ rec->cur_tick = parm; rec->realtime = 0; } return 1; }
int snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *ev) { abstime_t parm = ev->t.time; if (ev->t.code == EV_TIMING) { switch (ev->t.cmd) { case TMR_WAIT_REL: parm += rec->cur_tick; rec->realtime = 0; case TMR_WAIT_ABS: if (parm == 0) { rec->realtime = 1; } else if (parm >= rec->cur_tick) { rec->realtime = 0; rec->cur_tick = parm; } return 1; case TMR_START: snd_seq_oss_timer_start(rec); return 1; } } else if (ev->s.code == SEQ_WAIT) { parm = (ev->echo >> 8) & 0xffffff; if (parm > rec->cur_tick) { rec->cur_tick = parm; rec->realtime = 0; } return 1; }
/* * decode event and send MIDI bytes to read queue */ static int send_midi_event(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, struct seq_oss_midi *mdev) { char msg[32]; int len; snd_seq_oss_readq_put_timestamp(dp->readq, ev->time.tick, dp->seq_mode); if (!dp->timer->running) len = snd_seq_oss_timer_start(dp->timer); if (ev->type == SNDRV_SEQ_EVENT_SYSEX) { snd_seq_oss_readq_sysex(dp->readq, mdev->seq_device, ev); } else { len = snd_midi_event_decode(mdev->coder, msg, sizeof(msg), ev); if (len > 0) snd_seq_oss_readq_puts(dp->readq, mdev->seq_device, msg, len); } return 0; }