AcxMuteCreate function (acxelements.h)

Artikel
02/22/2024

The AcxMuteCreate function is used to create an ACX mute object that that will be associated with a circuit object parent.

Syntax

NTSTATUS AcxMuteCreate(
  ACXOBJECT              Object,
  PWDF_OBJECT_ATTRIBUTES Attributes,
  PACX_MUTE_CONFIG       Config,
  ACXMUTE                *Mute
);

Parameters

Object

A WDFDEVICE object (described in Summary of Framework Objects) that will be associated with the circuit.

Attributes

Additional Attributes defined using a WDF_OBJECT_ATTRIBUTES structure that are used to set various values and to associate the mute object with the parent circuit object.

Config

An initialized ACX_MUTE_CONFIG structure that describes the configuration of the mute behavior.

Mute

A pointer to a location that receives the handle to the newly created ACXMUTE object. For more information about ACX objects, see Summary of ACX Objects.

Return value

Returns STATUS_SUCCESS if the call was successful. Otherwise, it returns an appropriate error code. For more information, see Using NTSTATUS Values.

Remarks

Example

Example usage is shown below.

    NTSTATUS                        status;
    WDF_OBJECT_ATTRIBUTES           attributes;

    ACX_MUTE_CALLBACKS              muteCallbacks;
    ACX_MUTE_CONFIG                 muteCfg;
    ACXMUTE                         muteElement;

    ACX_MUTE_CALLBACKS_INIT(&muteCallbacks);
    muteCallbacks.EvtAcxMuteAssignState = CodecR_EvtMuteAssignState;
    muteCallbacks.EvtAcxMuteRetrieveState = CodecR_EvtMuteRetrieveState;

    ACX_MUTE_CONFIG_INIT(&muteCfg);
    muteCfg.ChannelsCount = MAX_CHANNELS;
    muteCfg.Name = &KSAUDFNAME_WAVE_MUTE;
    muteCfg.Callbacks = &muteCallbacks;

    WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, CODEC_MUTE_ELEMENT_CONTEXT);
    attributes.ParentObject = Circuit;

    status = AcxMuteCreate(Circuit, &attributes, &muteCfg, &muteElement);

ACX requirements

Minimum ACX version: 1.0

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

Requirements

Requirement	Value
Header	acxelements.h
IRQL	PASSIVE_LEVEL

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