// acxpin.h

typedef enum _ACX_PIN_QUALIFIER {
  AcxPinQualifierUnknown,
  AcxPinQualifierBridgeA,
  AcxPinQualifierBridgeB,
  AcxPinQualifierBridgeDevice,
  AcxPinQualifierMaximum
} ACX_PIN_QUALIFIER, *PACX_PIN_QUALIFIER;
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Windows Driver Kit DDI reference (ne-acxpin-acx_pin_qualifier)

Description

The ACX_PIN_QUALIFIER enumeration specify how the PIN is connected in the multi-circuit audio topology.

Constants

`AcxPinQualifierUnknown`

Indicates that the pin qualifier is unknown.

`AcxPinQualifierBridgeA`

Indicates composite support only. This pin is a bridge to another circuit on the streaming pin direction. This pin binds with AcxPinQualifierBridgeB pin type.

`AcxPinQualifierBridgeB`

Indicates composite support only. This pin is a bridge to another circuit on the device pin direction. This pin binds with AcxPinQualifierBridgeA pin type.

`AcxPinQualifierBridgeDevice`

Indicates composite support only.

`AcxPinQualifierMaximum`

For internal validation, do not use.

Remarks

ACX requirements

Minimum ACX version: 1.0

For more information about ACX versions, see ACX version overview.

ACX_PIN_QUALIFIER - NtDoc