snd_ctl_pcm_info()
Get general information about a PCM device from a control handle
Synopsis:
#include <sys/asoundlib.h> int snd_ctl_pcm_info( snd_ctl_t *handle, int dev, snd_pcm_info_t *info );
Arguments:
- handle
- The handle for the control connection to the card. This must be a handle created by snd_ctl_open() .
- dev
- The PCM device.
- info
- A pointer to a snd_pcm_info_t structure in which snd_ctl_pcm_info() stores the information.
Library:
libasound.so
Use the -l asound option to qcc to link against this library.
Description:
The snd_ctl_pcm_info() function fills the info structure with information about the capabilities of the PCM device dev on the sound card selected by handle.
Returns:
Zero on success, or a negative error code.
Errors:
- -EINVAL
- Invalid handle.
Classification:
QNX Neutrino
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |