Get general information about a mixer device
Synopsis:
#include <sys/asoundlib.h>
int snd_mixer_info( snd_mixer_t *handle,
snd_mixer_info_t *info );
Arguments:
- handle
- The handle for the mixer device.
This must have been created by
snd_mixer_open().
- info
- A pointer to a
snd_mixer_info_t
structure that snd_mixer_info() fills in with the information
about the mixer device.
Library:
libasound.so
Use the -l asound option with
qcc
to link against this library.
Description:
The snd_mixer_info() function
fills the info structure with information about the mixer device,
including the:
- device name
- device type
- number of mixer groups and elements the mixer contains.
Returns:
Zero on success, or a negative value on error.
Errors:
- -EINVAL
- Invalid handle.
Classification:
QNX Neutrino
| Safety: |
|
|---|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
Yes |
| Thread |
Yes |