MFWrapMediaType function (mfapi.h)

Creates a media type that wraps another media type.

Syntax

HRESULT MFWrapMediaType(
  IMFMediaType *pOrig,
  REFGUID      MajorType,
  REFGUID      SubType,
  IMFMediaType **ppWrap
);

Parameters

pOrig

A pointer to the IMFMediaType interface of the media type to wrap in a new media type.

MajorType

A GUID that specifies the major type for the new media type. For a list of possible values, see Major Media Types.

SubType

A GUID that specifies the subtype for the new media type. For possible values, see:

• Audio Subtypes
• Video Subtypes

ppWrap

Receives a pointer to the IMFMediaType interface of the new media type that wraps the original media type. The caller must release the interface.

Return value

If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

The original media type (pOrig) is stored in the new media type under the MF_MT_WRAPPED_TYPE attribute. To extract the original media type, call MFUnwrapMediaType.

This function is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:

• Windows XP with Service Pack 2 (SP2) and later.
• Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (October 2006 Update Rollup for Windows XP Media Center Edition) installed.

Requirements

See also

Media Foundation Functions