Name¶
AuDeviceAttributes - device attributes structure
Structures¶
#include <audio/audiolib.h>
typedef struct _AuDeviceAttributes
{
. . .
}
AuDeviceAttributes;
Members¶
Do not dereference the members of the
AuDeviceAttributes structure
directly. 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,
AuCompCommonUseMask, AuCompCommonFormatMask,
AuCompCommonNumTracksMask, AuCompCommonAccessMask,
AuCompCommonDescriptionMask, AuCompDeviceMinSampleRateMask,
AuCompDeviceMaxSampleRateMask, AuCompDeviceLocationMask,
AuCompDeviceGainMask, AuCompDeviceLineModeMask, 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,
AuCompCommonUseMask, AuCompCommonFormatMask,
AuCompCommonNumTracksMask, AuCompCommonAccessMask,
AuCompCommonDescriptionMask, AuCompDeviceMinSampleRateMask,
AuCompDeviceMaxSampleRateMask, AuCompDeviceLocationMask,
AuCompDeviceGainMask, AuCompDeviceLineModeMask, and
AuCompDeviceChildrenMask.
- AuDeviceIdentifier(da)
- Accesses the AuFlowID ID of the device.
- AuDeviceKind(da)
- Accesses the int value indicating the kind of component.
Devices are either AuComponentKindPhysicalInput or
AuComponentKindPhysicalOutput.
- AuDeviceUse(da)
- Accesses the AuMask value indicating what uses of
the device are permitted. This is a bitwise inclusive OR of these
constants: AuComponentUseImportMask and
AuComponentUseExportMask.
- AuDeviceFormat(da)
- Accesses the int value indicating the audio data format the
device uses. Currently, the following formats are defined:
AuFormatULAW8, AuFormatLinearUnsigned8,
AuFormatLinearSigned8, AuFormatLinearSigned16MSB,
AuFormatLinearUnsigned16MSB, AuFormatLinearSigned16LSB, and
AuFormatLinearUnsigned16LSB.
- 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
description 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 device. This is a bitwise inclusive OR of these constants:
AuDeviceLocationLeftMask, AuDeviceLocationCenterMask,
AuDeviceLocationRightMask, AuDeviceLocationTopMask,
AuDeviceLocationMiddleMask, AuDeviceLocationBottomMask,
AuDeviceLocationBackMask, AuDeviceLocationFrontMask,
AuDeviceLocationInternalMask, and
AuDeviceLocationExternalMask
- AuDeviceGain(da)
- Accesses the AuFixedPoint value with the current
hardware amplification 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
interface.
See Also¶
AuGetDeviceAttributes,
AuListDevices.
audiolib -
Network Audio System C Language Interface
