char *mus_midi_describe(void)
{
int i, err;
snd_rawmidi_t *line;
snd_rawmidi_info_t *info;
char *buf = NULL;
char one[256];
snd_rawmidi_info_malloc(&info);
buf = (char *)CALLOC(1024, sizeof(char));
for (i = 0; i < 8; i++)
{
/* presumably this should use the card|device from the info struct, not a blind loop */
err = snd_rawmidi_open(&line, NULL, mus_midi_device_name(i << 16), SND_RAWMIDI_NONBLOCK); /* do the "devices" matter here? */
if (err < 0) continue;
err = snd_rawmidi_info(line, info);
if (err < 0) break;
sprintf(one, "%s: card: %d, device: %d, stream: %d, flags: %x, id: %s, name: %s[%s; %d]\n",
mus_midi_device_name(i << 16),
snd_rawmidi_info_get_card(info), /* card number */
snd_rawmidi_info_get_device(info), /* device number */
snd_rawmidi_info_get_stream(info), /* snd_rawmidi_stream_t */
snd_rawmidi_info_get_flags(info), /* 1=out 2=in 4=dupex */
snd_rawmidi_info_get_id(info), /* hardware id (out in?) */
snd_rawmidi_info_get_name(info),
snd_rawmidi_info_get_subdevice_name(info),
snd_rawmidi_info_get_subdevices_count(info));
strcat(buf, one);
}
snd_rawmidi_info_free(info);
return(buf);
}
static
void midi_port_init(const alsa_rawmidi_t *midi, midi_port_t *port, snd_rawmidi_info_t *info, const alsa_id_t *id)
{
const char *name;
char *c;
port->id = *id;
snprintf(port->dev, sizeof(port->dev), "hw:%d,%d,%d", id->id[0], id->id[1], id->id[3]);
name = snd_rawmidi_info_get_subdevice_name(info);
if (!strlen(name))
name = snd_rawmidi_info_get_name(info);
snprintf(port->name, sizeof(port->name), "%s %s %s", port->id.id[2] ? "out":"in", port->dev, name);
// replace all offending characters with '-'
for (c=port->name; *c; ++c)
if (!isalnum(*c))
*c = '-';
port->state = PORT_CREATED;
}
void list_subdevice_info(snd_ctl_t *ctl, int card, int device) {
snd_rawmidi_info_t *info;
const char *name;
const char *sub_name;
int subs, subs_in, subs_out;
int sub, in, out;
int status;
snd_rawmidi_info_alloca(&info);
snd_rawmidi_info_set_device(info, device);
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_INPUT);
snd_ctl_rawmidi_info(ctl, info);
subs_in = snd_rawmidi_info_get_subdevices_count(info);
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_OUTPUT);
snd_ctl_rawmidi_info(ctl, info);
subs_out = snd_rawmidi_info_get_subdevices_count(info);
subs = subs_in > subs_out ? subs_in : subs_out;
sub = 0;
in = out = 0;
if ((status = is_output(ctl, card, device, sub)) < 0) {
error("cannot get rawmidi information %d:%d: %s",
card, device, snd_strerror(status));
return;
} else if (status)
out = 1;
if (status == 0) {
if ((status = is_input(ctl, card, device, sub)) < 0) {
error("cannot get rawmidi information %d:%d: %s",
card, device, snd_strerror(status));
return;
}
} else if (status)
in = 1;
if (status == 0)
return;
name = snd_rawmidi_info_get_name(info);
sub_name = snd_rawmidi_info_get_subdevice_name(info);
if (sub_name[0] == '\0') {
if (subs == 1) {
printf("%c%c hw:%d,%d %s\n",
in ? 'I' : ' ',
out ? 'O' : ' ',
card, device, name);
} else
printf("%c%c hw:%d,%d %s (%d subdevices)\n",
in ? 'I' : ' ',
out ? 'O' : ' ',
card, device, name, subs);
} else {
sub = 0;
for (;;) {
printf("%c%c hw:%d,%d,%d %s\n",
in ? 'I' : ' ', out ? 'O' : ' ',
card, device, sub, sub_name);
if (++sub >= subs)
break;
in = is_input(ctl, card, device, sub);
out = is_output(ctl, card, device, sub);
snd_rawmidi_info_set_subdevice(info, sub);
if (out) {
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_OUTPUT);
if ((status = snd_ctl_rawmidi_info(ctl, info)) < 0) {
error("cannot get rawmidi information %d:%d:%d: %s",
card, device, sub, snd_strerror(status));
break;
}
} else {
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_INPUT);
if ((status = snd_ctl_rawmidi_info(ctl, info)) < 0) {
error("cannot get rawmidi information %d:%d:%d: %s",
card, device, sub, snd_strerror(status));
break;
}
}
sub_name = snd_rawmidi_info_get_subdevice_name(info);
}
}
}
