snd_pcm_info()
Get general information about a PCM device
Synopsis:
#include <sys/asoundlib.h>
int snd_pcm_info( snd_pcm_t *handle,
snd_pcm_info_t *info );
Arguments:
- handle
- The handle for the PCM device, which you must have opened by calling snd_pcm_open_name(), snd_pcm_open(), or snd_pcm_open_preferred().
- 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 with qcc to link against this library.
Description:
The snd_pcm_info() function fills the info structure with information about the capabilities of the PCM device selected by handle.
Returns:
Zero on success, or a negative error code.
Errors:
- -EINVAL
- The state of handle is invalid or an invalid state change occurred. You can call snd_pcm_channel_status() to check if the state change was invalid.
Classification:
QNX Neutrino
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | Yes |
| Thread | Read the Caveats |
Caveats:
This function is not thread safe if handle (snd_pcm_t) is used across multiple threads.
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