static const char* search_device(void)
{
int card, err;
snd_hwdep_info_t* info;
snd_hwdep_info_alloca(&info);
card = -1;
while (snd_card_next(&card) >= 0 && card >= 0) {
char ctl_name[20];
snd_ctl_t* ctl;
int device;
sprintf(ctl_name, "hw:CARD=%d", card);
err = snd_ctl_open(&ctl, ctl_name, SND_CTL_NONBLOCK);
if (err < 0)
continue;
device = -1;
while (snd_ctl_hwdep_next_device(ctl, &device) >= 0 && device >= 0) {
snd_hwdep_info_set_device(info, device);
err = snd_ctl_hwdep_info(ctl, info);
if (err >= 0 && snd_hwdep_info_get_iface(info) == SND_HWDEP_IFACE_SB_RC) {
static char name[36];
sprintf(name, "hw:CARD=%d,DEV=%d", card, device);
snd_ctl_close(ctl);
return name;
}
}
snd_ctl_close(ctl);
}
return NULL;
}
static int find_hwdep_device(int *cardP, int *devP)
{
snd_ctl_t *ctl_handle;
snd_ctl_card_info_t *card_info;
snd_hwdep_info_t *hwdep_info;
int card;
int dev;
int err;
char card_id[32];
ctl_handle = NULL;
snd_ctl_card_info_alloca(&card_info);
snd_hwdep_info_alloca(&hwdep_info);
for (card = 0; card < 7; card++) {
*cardP = card;
if (ctl_handle) {
snd_ctl_close(ctl_handle);
ctl_handle = NULL;
}
// Get control handle for selected card
sprintf(card_id, "hw:%i", card);
if ((err = snd_ctl_open(&ctl_handle, card_id, 0)) < 0) {
fprintf(stderr, "control open (%s): %s", card_id, snd_strerror(err));
return -1;
}
// Read control hardware info from card
if ((err = snd_ctl_card_info(ctl_handle, card_info)) < 0) {
fprintf(stderr, "control hardware info (%s): %s", card_id, snd_strerror(err));
continue;
}
//if (strcmp(snd_ctl_card_info_get_driver(card_info),"BT SCO (d)"))
// continue;
dev = -1;
err = 1;
while (1) {
int if_type;
if (snd_ctl_hwdep_next_device(ctl_handle, &dev) < 0)
fprintf(stderr, "hwdep next device (%s): %s", card_id, snd_strerror(err));
if (dev < 0)
break;
snd_hwdep_info_set_device(hwdep_info, dev);
if (snd_ctl_hwdep_info(ctl_handle, hwdep_info) < 0) {
if (err != -ENOENT)
fprintf(stderr, "control hwdep info (%s): %s", card_id, snd_strerror(err));
continue;
}
if_type = snd_hwdep_info_get_iface(hwdep_info);
if (if_type == SNDRV_HWDEP_IFACE_BT_SCO || if_type==12) {
snd_ctl_close(ctl_handle);
*devP = dev;
return 0;
}
}
}
if (ctl_handle)
snd_ctl_close(ctl_handle);
return -1;
}