IMemoryData::SetBuffer method (austream.h)

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4/26/2023

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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

Note This interface is deprecated. New applications should not use it.

Initializes a memory buffer with a pointer to memory and length.

Syntax

HRESULT SetBuffer(
  [in] DWORD cbSize,
  [in] BYTE  *pbData,
  [in] DWORD dwFlags
);

Parameters

[in] cbSize

Size of memory pointed to by pbData, in bytes.

[in] pbData

Pointer to memory that this object will use.

[in] dwFlags

Reserved for flag data. Must be zero.

Return value

Returns S_OK if successful or E_INVALIDARG if cbSize is zero or pbData is NULL.

Remarks

This method can be called as often as needed. When using IStreamSample::Update to update samples asynchronously, make sure that SetBuffer is never called before an update is completed.

Requirements

Requirement	Value
Target Platform	Windows
Header	austream.h

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