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4/8/2010

This method retrieves the buffer and the size of the valid data in the buffer.

Syntax 

HRESULT GetBufferAndLength(
  BYTE** 
ppBuffer, 
  DWORD* 
pcbLength
);

Parameters

ppBuffer

[out] Address of a pointer that receives the buffer array. The ppBufferparameter can be NULL if pcbLengthis not NULL.

pcbLength

[out] Pointer to a variable that receives the size of the valid data, in bytes. The pcbLengthparameter can be NULL if ppBufferis not NULL.

Return Value

Returns an HRESULTvalue. Possible values include the following.

Value Description

S_OK

Retrieved the requested number of items

E_POINTER

NULL pointer argument

Remarks

Either parameter can be NULL, in which case it does not receive a value. At least one parameter must be non-NULL. If both parameters are NULL, the method returns E_POINTER.

The value returned in the pcbLengthparameter is the size of the valid data in the buffer, not the buffer's allocated size. To obtain the buffer's allocated size, call the IMediaBuffer::GetMaxLengthmethod.

Requirements

Header dmo.h
Library Dmoguid.lib
Windows Embedded CE Windows CE .NET 4.1 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also