/*
* send OSS raw events - SEQ_PRIVATE and SEQ_VOLUME
*/
int
snd_seq_oss_synth_raw_event(seq_oss_devinfo_t *dp, int dev, unsigned char *data, snd_seq_event_t *ev)
{
if (! snd_seq_oss_synth_is_valid(dp, dev) || is_midi_dev(dp, dev))
return -ENXIO;
ev->type = SNDRV_SEQ_EVENT_OSS;
memcpy(ev->data.raw8.d, data, 8);
return snd_seq_oss_synth_addr(dp, dev, ev);
}
/*
* 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;
}
/*
* receive OSS 6 byte sysex packet:
* the full sysex message will be sent if it reaches to the end of data
* (0xff).
*/
int
snd_seq_oss_synth_sysex(seq_oss_devinfo_t *dp, int dev, unsigned char *buf, snd_seq_event_t *ev)
{
int i, send;
unsigned char *dest;
seq_oss_synth_sysex_t *sysex;
if (! snd_seq_oss_synth_is_valid(dp, dev))
return -ENXIO;
sysex = dp->synths[dev].sysex;
if (sysex == NULL) {
sysex = kcalloc(1, sizeof(*sysex), GFP_KERNEL);
if (sysex == NULL)
return -ENOMEM;
dp->synths[dev].sysex = sysex;
}
send = 0;
dest = sysex->buf + sysex->len;
/* copy 6 byte packet to the buffer */
for (i = 0; i < 6; i++) {
if (buf[i] == 0xff) {
send = 1;
break;
}
dest[i] = buf[i];
sysex->len++;
if (sysex->len >= MAX_SYSEX_BUFLEN) {
sysex->len = 0;
sysex->skip = 1;
break;
}
}
if (sysex->len && send) {
if (sysex->skip) {
sysex->skip = 0;
sysex->len = 0;
return -EINVAL; /* skip */
}
/* copy the data to event record and send it */
ev->flags = SNDRV_SEQ_EVENT_LENGTH_VARIABLE;
if (snd_seq_oss_synth_addr(dp, dev, ev))
return -EINVAL;
ev->data.ext.len = sysex->len;
ev->data.ext.ptr = sysex->buf;
sysex->len = 0;
return 0;
}
return -EINVAL; /* skip */
}
/*
* create a control event
*/
static int
set_control_event(seq_oss_devinfo_t *dp, int dev, int type, int ch, int param, int val, snd_seq_event_t *ev)
{
if (! snd_seq_oss_synth_is_valid(dp, dev))
return -ENXIO;
ev->type = type;
snd_seq_oss_synth_addr(dp, dev, ev);
ev->data.control.channel = ch;
ev->data.control.param = param;
ev->data.control.value = val;
return 0;
}
/*
* create a note event
*/
static int
set_note_event(seq_oss_devinfo_t *dp, int dev, int type, int ch, int note, int vel, snd_seq_event_t *ev)
{
if (! snd_seq_oss_synth_is_valid(dp, dev))
return -ENXIO;
ev->type = type;
snd_seq_oss_synth_addr(dp, dev, ev);
ev->data.note.channel = ch;
ev->data.note.note = note;
ev->data.note.velocity = vel;
return 0;
}
