snd_mixer_info()

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 to 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