snd_mixer_open_name()
Create a connection and handle to a mixer device specified by name
Synopsis:
#include <sys/asoundlib.h> int snd_mixer_open_name( snd_mixer_t **handle, char *name );
Arguments:
- handle
- A pointer to a location where snd_mixer_open_name() can store a handle for the mixer device.
- name
- The full path of the mixer device to open (e.g. /dev/snd/mixerC0).
Library:
libasound.so
Use the -l asound option to qcc to link against this library.
Description:
The snd_mixer_open_name() function creates a handle and opens a connection to the named mixer device. You'll use this handle when calling the other snd_mixer_* functions.
Returns:
Zero on success, or a negative value on error.
Errors:
- -EACCES
- Search permission is denied on a component of the path prefix, or the device exists and the permissions specified are denied.
- -EINTR
- The open() operation was interrupted by a signal.
- -EMFILE
- Too many file descriptors are currently in use by this process.
- -ENFILE
- Too many files are currently open in the system.
- -ENOENT
- The named device doesn't exist.
- -ENOMEM
- Not enough memory is available for the data structure.
- -SND_ERROR_INCOMPATIBLE_VERSION
- The audio driver version is incompatible with the client library that the application is using.
Classification:
QNX Neutrino
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |