static int
insert_queue(struct seq_oss_devinfo *dp, union evrec *rec, struct file *opt)
{
int rc = 0;
struct snd_seq_event event;
/* if this is a timing event, process the current time */
if (snd_seq_oss_process_timer_event(dp->timer, rec))
return 0; /* no need to insert queue */
/* parse this event */
memset(&event, 0, sizeof(event));
/* set dummy -- to be sure */
event.type = SNDRV_SEQ_EVENT_NOTEOFF;
snd_seq_oss_fill_addr(dp, &event, dp->addr.port, dp->addr.client);
if (snd_seq_oss_process_event(dp, rec, &event))
return 0; /* invalid event - no need to insert queue */
event.time.tick = snd_seq_oss_timer_cur_tick(dp->timer);
if (dp->timer->realtime || !dp->timer->running) {
snd_seq_oss_dispatch(dp, &event, 0, 0);
} else {
if (is_nonblock_mode(dp->file_mode))
rc = snd_seq_kernel_client_enqueue(dp->cseq, &event, 0, 0);
else
rc = snd_seq_kernel_client_enqueue_blocking(dp->cseq, &event, opt, 0, 0);
}
return rc;
}
/*
* fill the event source/destination addresses
*/
int
snd_seq_oss_synth_addr(seq_oss_devinfo_t *dp, int dev, snd_seq_event_t *ev)
{
if (! snd_seq_oss_synth_is_valid(dp, dev))
return -EINVAL;
snd_seq_oss_fill_addr(dp, ev, dp->synths[dev].arg.addr.client,
dp->synths[dev].arg.addr.port);
return 0;
}
/*
* create an echo event
*/
static int
set_echo_event(seq_oss_devinfo_t *dp, evrec_t *rec, snd_seq_event_t *ev)
{
ev->type = SNDRV_SEQ_EVENT_ECHO;
/* echo back to itself */
snd_seq_oss_fill_addr(dp, ev, dp->addr.client, dp->addr.port);
memcpy(&ev->data, rec, LONG_EVENT_SIZE);
return 0;
}
/*
* wait until the write buffer has enough room
*/
int
snd_seq_oss_writeq_sync(seq_oss_writeq_t *q)
{
seq_oss_devinfo_t *dp = q->dp;
abstime_t time;
unsigned long flags;
time = snd_seq_oss_timer_cur_tick(dp->timer);
if (q->sync_time >= time)
return 0; /* already finished */
if (! q->sync_event_put) {
snd_seq_event_t ev;
evrec_t *rec;
/* put echoback event */
memset(&ev, 0, sizeof(ev));
ev.flags = 0;
ev.type = SNDRV_SEQ_EVENT_ECHO;
ev.time.tick = time;
/* echo back to itself */
snd_seq_oss_fill_addr(dp, &ev, dp->addr.client, dp->addr.port);
rec = (evrec_t*)&ev.data;
rec->t.code = SEQ_SYNCTIMER;
rec->t.time = time;
q->sync_event_put = 1;
snd_seq_kernel_client_enqueue_blocking(dp->cseq, &ev, NULL, 0, 0);
}
spin_lock_irqsave(&q->sync_lock, flags);
if (! q->sync_event_put) { /* echoback event has been received */
spin_unlock_irqrestore(&q->sync_lock, flags);
return 0;
}
/* wait for echo event */
spin_unlock(&q->sync_lock);
interruptible_sleep_on_timeout(&q->sync_sleep, HZ);
spin_lock(&q->sync_lock);
if (signal_pending(current)) {
/* interrupted - return 0 to finish sync */
q->sync_event_put = 0;
spin_unlock_irqrestore(&q->sync_lock, flags);
return 0;
}
spin_unlock_irqrestore(&q->sync_lock, flags);
if (q->sync_time >= time)
return 0;
else
return 1;
}
/*
* reset synth device:
* call reset callback. if no callback is defined, send a heartbeat
* event to the corresponding port.
*/
void
snd_seq_oss_synth_reset(seq_oss_devinfo_t *dp, int dev)
{
seq_oss_synth_t *rec;
seq_oss_synthinfo_t *info;
snd_assert(dev >= 0 && dev < dp->max_synthdev, return);
info = &dp->synths[dev];
if (! info->opened)
return;
if (info->sysex)
info->sysex->len = 0; /* reset sysex */
reset_channels(info);
if (info->is_midi) {
if (midi_synth_dev.opened <= 0)
return;
snd_seq_oss_midi_reset(dp, info->midi_mapped);
/* reopen the device */
snd_seq_oss_midi_close(dp, dev);
if (snd_seq_oss_midi_open(dp, info->midi_mapped,
dp->file_mode) < 0) {
midi_synth_dev.opened--;
info->opened = 0;
if (info->sysex) {
kfree(info->sysex);
info->sysex = NULL;
}
if (info->ch) {
kfree(info->ch);
info->ch = NULL;
}
}
return;
}
rec = get_sdev(dev);
if (rec == NULL)
return;
if (rec->oper.reset) {
rec->oper.reset(&info->arg);
} else {
snd_seq_event_t ev;
memset(&ev, 0, sizeof(ev));
snd_seq_oss_fill_addr(dp, &ev, info->arg.addr.client,
info->arg.addr.port);
ev.type = SNDRV_SEQ_EVENT_RESET;
snd_seq_oss_dispatch(dp, &ev, 0, 0);
}
snd_use_lock_free(&rec->use_lock);
}
static int snd_seq_oss_oob_user(struct seq_oss_devinfo *dp, void __user *arg)
{
unsigned char ev[8];
struct snd_seq_event tmpev;
if (copy_from_user(ev, arg, 8))
return -EFAULT;
memset(&tmpev, 0, sizeof(tmpev));
snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.port, dp->addr.client);
tmpev.time.tick = 0;
if (! snd_seq_oss_process_event(dp, (union evrec *)ev, &tmpev)) {
snd_seq_oss_dispatch(dp, &tmpev, 0, 0);
}
return 0;
}
/*
* dump midi data
* return 0 : enqueued
* non-zero : invalid - ignored
*/
int
snd_seq_oss_midi_putc(struct seq_oss_devinfo *dp, int dev, unsigned char c, struct snd_seq_event *ev)
{
struct seq_oss_midi *mdev;
if ((mdev = get_mididev(dp, dev)) == NULL)
return -ENODEV;
if (snd_midi_event_encode_byte(mdev->coder, c, ev) > 0) {
snd_seq_oss_fill_addr(dp, ev, mdev->client, mdev->port);
snd_use_lock_free(&mdev->use_lock);
return 0;
}
snd_use_lock_free(&mdev->use_lock);
return -EINVAL;
}
/*
* wait until the write buffer has enough room
*/
int
snd_seq_oss_writeq_sync(struct seq_oss_writeq *q)
{
struct seq_oss_devinfo *dp = q->dp;
abstime_t time;
time = snd_seq_oss_timer_cur_tick(dp->timer);
if (q->sync_time >= time)
return 0; /* already finished */
if (! q->sync_event_put) {
struct snd_seq_event ev;
union evrec *rec;
/* put echoback event */
memset(&ev, 0, sizeof(ev));
ev.flags = 0;
ev.type = SNDRV_SEQ_EVENT_ECHO;
ev.time.tick = time;
/* echo back to itself */
snd_seq_oss_fill_addr(dp, &ev, dp->addr.client, dp->addr.port);
rec = (union evrec *)&ev.data;
rec->t.code = SEQ_SYNCTIMER;
rec->t.time = time;
q->sync_event_put = 1;
snd_seq_kernel_client_enqueue_blocking(dp->cseq, &ev, NULL, 0, 0);
}
wait_event_interruptible_timeout(q->sync_sleep, ! q->sync_event_put, HZ);
if (signal_pending(current))
/* interrupted - return 0 to finish sync */
q->sync_event_put = 0;
if (! q->sync_event_put || q->sync_time >= time)
return 0;
return 1;
}
