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AuListDevices(3)      DragonFly Library Functions Manual      AuListDevices(3)

Name
       AuListDevices - list devices

Synopsis
       #include <audio/audiolib.h>

       AuDeviceAttributes *AuListDevices(server, valuemask, attributes,
       ndevices, status)
           AuServer *server;
           AuMask valuemask;
           AuDeviceAttributes *attributes;
           int *ndevices; /* RETURN */
           AuStatus *status; /* RETURN */

Arguments
       server    Specifies the connection to the audio server.

       valuemask Specifies which device attributes are defined in the
                 attributes argument.  This must be a bitwise inclusive OR of
                 zero or more of these constants: AuCompCommonIDMask,
                 AuCompCommonKindMask, AuCompCommonUseMask,
                 AuCommonFormatMask, AuCommonNumTracksMask,
                 AuCommonAccessMask, AuCommonDescriptionMask,
                 AuCompDeviceMinSampleRateMask, AuCompDeviceMaxSampleRateMask,
                 AuCompDeviceLocationMask, AuCompDeviceGainMask,
                 AuCompDeviceLineModeMask, AuCompDeviceChildrenMask, or
                 AuCompDeviceMasks.  If valuemask is zero, the attributes are
                 ignored and are not referenced.

       attributes
                 Specifies the structure from which the values (as specified
                 by the value mask) are to be taken.

       ndevices  Returns the number of devices in the returned list.

       status    If non-NULL, flush the output buffer and return the status
                 from the server.

Description
       AuListDevices returns a list of devices whose attributes match those
       values in attributes specified by valuemask, or NULL, with ndevices set
       to 0, if there was an error.  Use AuFreeDeviceList to release the
       memory in the list when its nolonger needed.

Errors
       AuBadLength.

See Also
       AuGetDeviceAttributes.

       audiolib - Network Audio System C Language Interface

audiolib - device attributes         1.9.4                    AuListDevices(3)