ALSA Library Reference Manual
DECLARATION
typedef struct snd_ctl_read
{
unsigned int cmd; /* command - SND_MIXER_READ_* */
union
{
struct
{
int iface; /* interface */
snd_switch_list_item_t switem; /* switch item */
}
sw;
unsigned char data8[60];
}
data;
}
snd_ctl_read_t;
REFERENCE