Get a mixer group's configurable parameters
#include <sys/asoundlib.h> int snd_mixer_group_read( snd_mixer_t *handle, snd_mixer_group_t *group );
- The handle for the mixer device. This must have been created by snd_mixer_open() .
- A pointer to a snd_mixer_group_t structure that snd_mixer_group_read() fills in with information about the mixer group.
Use the -l asound option to qcc to link against this library.
Zero on success, or a negative error value on error.
- Invalid handle argument.
- The group wasn't found.
The group struct must be initialized to a known state before making the call: use memset() to set the struct to zero, and then set the gid member to specify which group to read.