MFWrapMediaType Function

Artikel
07/27/2011

Creates a media type that wraps another media type.

Syntax

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

Parameter

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
Applications can define custom subtype GUIDs.
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.

Rückgabewert

Ist Funktion erfolgreich, wird "S_OK" zurückgegeben. Andernfalls wird ein HRESULT-Fehlercode zurückgegeben.

Hinweise

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 mit Service Pack 2 (SP2) und höher.
Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (Oktober 2006 Updaterollup für Windows XP Media Center Edition) installed.

Anforderungen

Mindestens unterstützter Client	Windows Vista
Mindestens unterstützter Server	Windows Server 2008
Header	Mfapi.h
Bibliothek	Mfplat.lib
DLL	Mfplat.dll

Siehe auch

Media Foundation Functions

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