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HEAACWAVEFORMAT structure (mmreg.h)

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Contains format data for an AAC or HE-AAC stream that includes AudioSpecificConfig() data.

Syntax

typedef struct heaacwaveformat_tag {
  HEAACWAVEINFO wfInfo;
  BYTE          pbAudioSpecificConfig[1];
} HEAACWAVEFORMAT;

Members

wfInfo

A HEAACWAVEINFO structure.

pbAudioSpecificConfig[1]

A byte array that contains the value of AudioSpecificConfig(), as defined by ISO/IEC 14496-3. The array might be larger than the size given in the structure declaration. Use the value of wfInfo.wfx.cbSize to determine the size.

Remarks

Use this structure to access the AudioSpecificConfig() data that follows an HEAACWAVEINFO structure. This data is present only when the wStructType member of the HEAACWAVEFORMAT structure is zero.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Header mmreg.h