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AuDeviceAttributes(3)	   Library Functions Manual	 AuDeviceAttributes(3)

Name
       AuDeviceAttributes - device attributes structure

Structures
       #include	<audio/audiolib.h>

       typedef struct _AuDeviceAttributes
       {
	   . . .
       }AuDeviceAttributes;

Members
       Do  not dereference the members of the AuDeviceAttributes structure di-
       rectly.	Instead	use the	access macros.

       da is a pointer to a AuDeviceAttributes structure.

       AuDeviceValueMask(da)
		 Accesses the AuMask  value  indicating	 what  attributes  are
		 present.   This is a bitwise inclusive	OR of these constants:
		 AuCompCommonIDMask,  AuCompCommonKindMask,   AuCompCommonUse-
		 Mask,	AuCompCommonFormatMask,	AuCompCommonNumTracksMask, Au-
		 CompCommonAccessMask, AuCompCommonDescriptionMask,  AuCompDe-
		 viceMinSampleRateMask,	 AuCompDeviceMaxSampleRateMask,	AuCom-
		 pDeviceLocationMask,	AuCompDeviceGainMask,	 AuCompDevice-
		 LineModeMask, and AuCompDeviceChildrenMask.

       AuDeviceChangableMask(da)
		 Accesses  the AuMask value indicating which attributes	can be
		 changed.  This	is a bitwise inclusive OR of these  constants:
		 AuCompCommonIDMask,   AuCompCommonKindMask,  AuCompCommonUse-
		 Mask, AuCompCommonFormatMask, AuCompCommonNumTracksMask,  Au-
		 CompCommonAccessMask,	AuCompCommonDescriptionMask, AuCompDe-
		 viceMinSampleRateMask,	AuCompDeviceMaxSampleRateMask,	AuCom-
		 pDeviceLocationMask,	 AuCompDeviceGainMask,	 AuCompDevice-
		 LineModeMask, and AuCompDeviceChildrenMask.

       AuDeviceIdentifier(da)
		 Accesses the AuFlowID ID of the device.

       AuDeviceKind(da)
		 Accesses the int value	indicating the kind of component.  De-
		 vices are either AuComponentKindPhysicalInput or  AuComponen-
		 tKindPhysicalOutput.

       AuDeviceUse(da)
		 Accesses  the AuMask value indicating what uses of the	device
		 are permitted.	 This is a bitwise inclusive OR	of these  con-
		 stants:  AuComponentUseImportMask  and	 AuComponentUseExport-
		 Mask.

       AuDeviceFormat(da)
		 Accesses the int value	indicating the audio data  format  the
		 device	 uses.	 Currently, the	following formats are defined:
		 AuFormatULAW8,	   AuFormatLinearUnsigned8,    AuFormatLinear-
		 Signed8,     AuFormatLinearSigned16MSB,     AuFormatLinearUn-
		 signed16MSB, AuFormatLinearSigned16LSB, and AuFormatLinearUn-
		 signed16LSB.

       AuDeviceNumTracks(da)
		 Accesses the int value	indicating the number  of  tracks  the
		 device	supports.

       AuDeviceAccess(da)
		 Accesses the AuMask value indicating what kinds of access are
		 allowed.   This is a bitwise inclusive	OR of these constants:
		 AuAccessImportMask, AuAccessExportMask,  AuAccessDestroyMask,
		 and AuAccessListMask.

       AuDeviceDescription(da)
		 Accesses the AuString structure containing a textual descrip-
		 tion of the device.

       AuDeviceMinSampleRate(da)
		 Accesses the unsigned int value indicating the	minimum	sample
		 rate supported	by the device.

       AuDeviceMaxSampleRate(da)
		 Accesses the unsigned int value indicating the	maximum	sample
		 rate supported	by the device.

       AuDeviceLocation(da)
		 Accesses  the AuMask value indicating the location of the de-
		 vice.	This is	a bitwise inclusive OR of these	constants: Au-
		 DeviceLocationLeftMask, AuDeviceLocationCenterMask, AuDevice-
		 LocationRightMask, AuDeviceLocationTopMask, AuDeviceLocation-
		 MiddleMask, AuDeviceLocationBottomMask, AuDeviceLocationBack-
		 Mask,	AuDeviceLocationFrontMask,   AuDeviceLocationInternal-
		 Mask, and AuDeviceLocationExternalMask

       AuDeviceGain(da)
		 Accesses the AuFixedPoint value with the current hardware am-
		 plification level.

       AuDeviceLineMode(da)
		 Accesses  the	AuInt32	value indicating the current line mode
		 (input	device only).

       AuDeviceNumChildren(da)
		 Accesses the int value	indicating the number of subcomponents
		 of the	device.

       AuDeviceChildren(da)
		 Accesses the list of AuDeviceID's of the subcomponents	of the
		 device.

Description
       The AuDeviceAttributes structure	describes the physical hardware	inter-
       face.

See Also
       AuGetDeviceAttributes, AuListDevices.

       audiolib	- Network Audio	System C Language Interface

audiolib - device attributes stru... 1.9.4		 AuDeviceAttributes(3)

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