Set a mixer element's configurable parameters
Synopsis:
#include <sys/asoundlib.h>
int snd_mixer_element_write(
snd_mixer_t *handle,
snd_mixer_element_t *element );
Arguments:
- handle
- The handle for the mixer device.
This must have been created by
snd_mixer_open().
- element
- A pointer to a
snd_mixer_element_t
from which snd_mixer_element_read() sets the element's
configurable parameters.
Library:
libasound.so
Use the -l asound option with
qcc
to link against this library.
Description:
The snd_mixer_element_write() function
writes the given snd_mixer_element_t structure to the driver.
Note:
We recommend that you work with mixer groups instead of manipulating the elements directly.
Returns:
Zero on success, or a negative value on error.
Errors:
- -EBUSY
- The element has been modified by another application.
- -EINVAL
- Invalid handle or element argument.
- -ENXIO
- The element wasn't found.
Classification:
QNX Neutrino
Safety: |
|
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
Caveats:
The write may fail with -EBUSY if another
application has modified the element, and this application
hasn't read that event yet using
snd_mixer_read().