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 with 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 |
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