QNX Developer Support
Get a mixer element's configurable parameters
#include <sys/asoundlib.h> int snd_mixer_element_read( snd_mixer_t *handle, snd_mixer_element_t *element );
- The handle for the mixer device. This must have been created by snd_mixer_open().
- A pointer to a snd_mixer_element_t in which snd_mixer_element_read() stores the element's configurable parameters.
The snd_mixer_element_read() function fills the snd_mixer_element_t structure with information on the current settings of the element identified by the eid substructure.
|We recommend that you work with mixer groups instead of manipulating the elements directly.|
Zero on success, or a negative error value on error.
- Invalid handle or element argument.
- The element wasn't found.
The element struct must be initialized to a known state before making the call: use memset() to set the struct to zero, and then set the eid member to specify which element to read.