1AuDeviceAttributes(3)      Library Functions Manual      AuDeviceAttributes(3)
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Name

6       AuDeviceAttributes - device attributes structure
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Structures

9       #include <audio/audiolib.h>
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11       typedef struct _AuDeviceAttributes
12       {
13           . . .
14       }AuDeviceAttributes;
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Members

17       Do  not  dereference  the  members  of the AuDeviceAttributes structure
18       directly.  Instead use the access macros.
19
20       da is a pointer to a AuDeviceAttributes structure.
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22       AuDeviceValueMask(da)
23                 Accesses the AuMask  value  indicating  what  attributes  are
24                 present.   This is a bitwise inclusive OR of these constants:
25                 AuCompCommonIDMask,  AuCompCommonKindMask,   AuCompCommonUse‐
26                 Mask,    AuCompCommonFormatMask,   AuCompCommonNumTracksMask,
27                 AuCompCommonAccessMask,  AuCompCommonDescriptionMask,  AuCom‐
28                 pDeviceMinSampleRateMask,      AuCompDeviceMaxSampleRateMask,
29                 AuCompDeviceLocationMask, AuCompDeviceGainMask, AuCompDevice‐
30                 LineModeMask, and AuCompDeviceChildrenMask.
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32       AuDeviceChangableMask(da)
33                 Accesses  the AuMask value indicating which attributes can be
34                 changed.  This is a bitwise inclusive OR of these  constants:
35                 AuCompCommonIDMask,   AuCompCommonKindMask,  AuCompCommonUse‐
36                 Mask,   AuCompCommonFormatMask,    AuCompCommonNumTracksMask,
37                 AuCompCommonAccessMask,  AuCompCommonDescriptionMask,  AuCom‐
38                 pDeviceMinSampleRateMask,      AuCompDeviceMaxSampleRateMask,
39                 AuCompDeviceLocationMask, AuCompDeviceGainMask, AuCompDevice‐
40                 LineModeMask, and AuCompDeviceChildrenMask.
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42       AuDeviceIdentifier(da)
43                 Accesses the AuFlowID ID of the device.
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45       AuDeviceKind(da)
46                 Accesses the int value  indicating  the  kind  of  component.
47                 Devices  are  either AuComponentKindPhysicalInput or AuCompo‐
48                 nentKindPhysicalOutput.
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50       AuDeviceUse(da)
51                 Accesses the AuMask value indicating what uses of the  device
52                 are  permitted.  This is a bitwise inclusive OR of these con‐
53                 stants:  AuComponentUseImportMask  and  AuComponentUseExport‐
54                 Mask.
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56       AuDeviceFormat(da)
57                 Accesses  the  int value indicating the audio data format the
58                 device uses.  Currently, the following formats  are  defined:
59                 AuFormatULAW8,    AuFormatLinearUnsigned8,    AuFormatLinear‐
60                 Signed8,     AuFormatLinearSigned16MSB,     AuFormatLinearUn‐
61                 signed16MSB, AuFormatLinearSigned16LSB, and AuFormatLinearUn‐
62                 signed16LSB.
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64       AuDeviceNumTracks(da)
65                 Accesses the int value indicating the number  of  tracks  the
66                 device supports.
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68       AuDeviceAccess(da)
69                 Accesses the AuMask value indicating what kinds of access are
70                 allowed.  This is a bitwise inclusive OR of these  constants:
71                 AuAccessImportMask,  AuAccessExportMask, AuAccessDestroyMask,
72                 and AuAccessListMask.
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74       AuDeviceDescription(da)
75                 Accesses the AuString structure containing a textual descrip‐
76                 tion of the device.
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78       AuDeviceMinSampleRate(da)
79                 Accesses the unsigned int value indicating the minimum sample
80                 rate supported by the device.
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82       AuDeviceMaxSampleRate(da)
83                 Accesses the unsigned int value indicating the maximum sample
84                 rate supported by the device.
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86       AuDeviceLocation(da)
87                 Accesses  the  AuMask  value  indicating  the location of the
88                 device.  This is a bitwise inclusive OR of  these  constants:
89                 AuDeviceLocationLeftMask,  AuDeviceLocationCenterMask,  AuDe‐
90                 viceLocationRightMask, AuDeviceLocationTopMask, AuDeviceLoca‐
91                 tionMiddleMask, AuDeviceLocationBottomMask, AuDeviceLocation‐
92                 BackMask,  AuDeviceLocationFrontMask,  AuDeviceLocationInter‐
93                 nalMask, and AuDeviceLocationExternalMask
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95       AuDeviceGain(da)
96                 Accesses  the  AuFixedPoint  value  with the current hardware
97                 amplification level.
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99       AuDeviceLineMode(da)
100                 Accesses the AuInt32 value indicating the current  line  mode
101                 (input device only).
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103       AuDeviceNumChildren(da)
104                 Accesses the int value indicating the number of subcomponents
105                 of the device.
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107       AuDeviceChildren(da)
108                 Accesses the list of AuDeviceID's of the subcomponents of the
109                 device.
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Description

112       The AuDeviceAttributes structure describes the physical hardware inter‐
113       face.
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See Also

116       AuGetDeviceAttributes, AuListDevices.
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118       audiolib - Network Audio System C Language Interface
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123audiolib - device attributes structure1.9.2               AuDeviceAttributes(3)
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