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Information about all elements in a mixer
typedef struct snd_mixer_elements_s
{
int32_t elements, elements_size, elements_over;
uint8_t zero[4]; /* alignment -- zero fill */
snd_mixer_eid_t *pelements;
void *pzero; /* align pointers on 64-bits --> point to NULL */
uint8_t reserved[128]; /* must be filled with zero */
} snd_mixer_elements_t;
The snd_mixer_elements_t structure describes all the elements
in a mixer.
You can fill in this structure by calling
snd_mixer_elements().
|
We recommend that you work with mixer groups instead of manipulating the
elements directly. |
The members of the snd_mixer_elements_t structure include:
- elements
- The total number of elements in the mixer.
- elements_size
- The size of the pelements storage location,
in sizeof( snd_mixer_eid_t ) units
(i.e. the number of entries in the pelements array).
Set this element before calling snd_mixer_elements().
- elements_over
- The number of elements that couldn't be copied to the storage location.
- pelements
- NULL, or a pointer to an array of
snd_mixer_eid_t
structures.
If pelements isn't NULL,
snd_mixer_elements() stores the mixer element IDs in the array.
QNX Neutrino
snd_mixer_eid_t,
snd_mixer_elements()
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