AcxStreamAddElements function (acxstreams.h)

Article
02/22/2024

AcxStreamAddElements is used to add stream elements to an AcxStream.

Syntax

NTSTATUS AcxStreamAddElements(
  ACXSTREAM  Stream,
  ACXELEMENT *Elements,
  ULONG      ElementsCount
);

Parameters

Stream

An existing ACXSTREAM Object. An ACXSTREAM object represents an audio stream created by a circuit. The stream can include zero or more elements. For more information, see ACX - Summary of ACX Objects.

Elements

A pointer to an array of one or more existing ACXELEMENT Objects.

ElementsCount

The count of elements to be added. This is a 1 based count.

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.


    ACX_ELEMENT_CONFIG_INIT(&elementCfg);
    WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, ELEMENT_CONTEXT);
 
    attributes.ParentObject = stream;
    status = AcxElementCreate(stream, &attributes, &elementCfg, &elements[0]);
    elementCtx = GetElementContext(elements[0]);
 
    ACX_ELEMENT_CONFIG_INIT(&elementCfg);
    WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, ELEMENT_CONTEXT);
 
    attributes.ParentObject = stream;
    status = AcxElementCreate(stream, &attributes, &elementCfg, &elements[1]);
    elementCtx = GetElementContext(elements[1]);
    //
    // Add stream elements
    //
    status = AcxStreamAddElements(stream, elements, SIZEOF_ARRAY(elements));

ACX requirements

Minimum ACX version: 1.0

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

Requirements

Requirement	Value
Header	acxstreams.h
IRQL	PASSIVE_LEVEL

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