Set a mixer group's configurable parameters
#include <sys/asoundlib.h> int snd_mixer_group_write( snd_mixer_t *handle, snd_mixer_group_t *group );
libasound.so
The snd_mixer_group_write() function writes the snd_mixer_group_t structure to the driver. This structure contains the volume levels and mutes associated with the group.
Zero on success, or a negative value on error.
QNX Neutrino
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |
The write may fail with -EBUSY if another application has modified the group, and this application hasn't read that event yet using snd_mixer_read().
snd_mixer_group_read(), snd_mixer_group_t, snd_mixer_groups()