MFGetAttributesAsBlob function

Converts the contents of an attribute store to a byte array.

Syntax


HRESULT MFGetAttributesAsBlob(
  _In_  IMFAttributes *pAttributes,
  _Out_ UINT8         *pBuf,
  _In_  UINT          cbBufSize
);

pAttributes [in]: Pointer to the IMFAttributes interface of the attribute store.
pBuf [out]: Pointer to an array that receives the attribute data.
cbBufSize [in]: Size of the pBuf array, in bytes. To get the required size of the buffer, call MFGetAttributesAsBlobSize.

The function returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The function succeeded.
MF_E_BUFFERTOOSMALL	The buffer given in pBuf is too small.

The function skips any attributes with IUnknown pointer values (MF_ATTRIBUTE_IUNKNOWN); they are not stored in the array.

To convert the byte array back into an attribute store, call MFInitAttributesFromBlob.

To write an attribute store to a stream, call the MFSerializeAttributesToStream function.

Minimum supported client	Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 [desktop apps \| Windows Store apps]
Minimum supported phone	Windows Phone 8
Header	Mfapi.h
Library	Mfplat.lib
DLL	Mfplat.dll