snd_mixer_groups_t

Information about all of the mixer groups

Synopsis:

typedef struct snd_mixer_groups_s
{
    int32_t     groups, groups_size, groups_over;
    uint8_t     zero[4];        /* alignment -- zero fill */
    snd_mixer_gid_t *pgroups;
    void        *pzero;         /* align pointers on 64-bits;
                                   point to NULL */
    uint8_t     reserved[128];  /* must be filled with zeroes */
}       snd_mixer_groups_t;

Description:

The snd_mixer_groups_t structure holds information about all of the mixer groups. You can fill this structure by calling snd_mixer_groups().

The members of this structure include:

groups
The number of groups that are currently valid in pgroups. Read only.
groups_size
The size of the pgroups storage location in sizeof(snd_mixer_gid_t) units (i.e., the number of entries in the array). Set this before calling snd_mixer_groups().
groups_over
The number of groups that could not be retrieved due to the size constraints of the pgroups local storage. Read only.
pgroups
NULL, or an array of snd_mixer_gid_t structures.

If pgroups isn't NULL, snd_mixer_groups() stores the group IDs in the array.

Classification:

QNX Neutrino

Page updated: