Warning: main(/www/www/htdocs/style/globals.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/audio/libs/snd_mixer_group_read.html on line 1
Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/globals.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/audio/libs/snd_mixer_group_read.html on line 1
Warning: main(/www/www/htdocs/style/header.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/audio/libs/snd_mixer_group_read.html on line 8
Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/header.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/audio/libs/snd_mixer_group_read.html on line 8
Get a mixer group's configurable parameters
#include <sys/asoundlib.h>
int snd_mixer_group_read(
snd_mixer_t *handle,
snd_mixer_group_t *group );
- handle
- The handle for the mixer device.
This must have been created by
snd_mixer_open().
- group
- A pointer to a
snd_mixer_group_t
structure that snd_mixer_group_read() fills in with information
about the mixer group.
libasound.so
The snd_mixer_group_read() function reads the
snd_mixer_group_t
structure for the group identified
by the gid substructure (for more information, see
snd_mixer_gid_t).
|
You must initialize the gid substructure before calling this
function. |
Zero on success, or a negative error value on error.
- -EINVAL
- Invalid handle argument.
- -ENXIO
- The group wasn't found.
QNX Neutrino
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
The group struct must be initialized to a known state before making the call:
use memset() to set the struct to zero, and then set the gid member
to specify which group to read.
snd_mixer_gid_t,
snd_mixer_group_t,
snd_mixer_group_write(),
snd_mixer_groups()
Warning: main(/www/www/htdocs/style/footer.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/audio/libs/snd_mixer_group_read.html on line 154
Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/footer.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/audio/libs/snd_mixer_group_read.html on line 154