snd_ctl_get_filter()

Get the current control events filter

Synopsis:

#include <sys/asoundlib.h>

int snd_ctl_get_filter( snd_ctl_t *handle, snd_ctl_filter_t * filter );

handle: The handle for the control connection to the card. This must be a handle created by snd_ctl_open().
filter: A filter that specifies which control events io-audio sends to the client application.

libasound.so

Use the -l asound option with qcc to link against this library.

The snd_ctl_get_filter() function gets the control event filter as a snd_ctl_filter_t structure:

typedef struct snd_ctl_filter {
    uint32_t enable;
    uint8_t  reserved[124];
} snd_ctl_filter_t;

This structure includes the following members:

EOK on success. The filter structure is populated.

QNX Neutrino