snd_ctl_hw_info()

Get information about a sound card's hardware

Synopsis:

#include <sys/asoundlib.h>

int snd_ctl_hw_info( snd_ctl_t *handle, 
                     struct snd_ctl_hw_info *info );

Arguments:

handle
The handle for the control connection to the card. This must be a handle created by snd_ctl_open() .
info
A pointer to a snd_ctl_hw_info_t structure in which snd_ctl_hw_info() stores the information.

Library:

libasound.so

Use the -l asound option to qcc to link against this library.

Description:

The snd_ctl_hw_info() function fills the info structure with information about the sound card hardware selected by handle.

Returns:

Zero on success, or a negative value if an error occurs.

Errors:

-EBADF
Invalid file descriptor. Your handle may be corrupt.
-EINVAL
Invalid handle argument.

Classification:

QNX Neutrino

Safety:
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes