CBaseOutputPin.GetDeliveryBuffer method

Article
07/27/2023

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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