CBaseOutputPin.GetDeliveryBuffer method

  • Article

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]

The GetDeliveryBuffer method retrieves a media sample that contains an empty buffer.

Syntax

virtual HRESULT GetDeliveryBuffer(
   IMediaSample   **ppSample,
   REFERENCE_TIME *pStartTime,
   REFERENCE_TIME *pEndTime,
   DWORD          dwFlags
);

Parameters

ppSample

Address of a variable that receives a pointer to the buffer's IMediaSample interface.

pStartTime

Pointer to the start time of the sample, or NULL.

pEndTime

Pointer to the ending time of the sample, or NULL.

dwFlags

Bitwise combination of flags supported by the IMemAllocator::GetBuffer interface.

Return value

Returns an HRESULT value. Possible values include those listed in the following table.

Return code Description
S_OK
 Success.
E_NOINTERFACE
 No allocator available.

Remarks

This method calls the IMemAllocator::GetBuffer method on the allocator, and passes the parameters to that method.

Requirements

Requirement Value
Header
Amfilter.h (include Streams.h)
Library
Strmbase.lib (retail builds);
Strmbasd.lib (debug builds)

See also

CBaseOutputPin Class