IVMRImagePresenter9::StartPresenting

  • Articolo
 
Microsoft DirectShow 9.0

IVMRImagePresenter9::StartPresenting

The StartPresenting method is called just before the video starts playing. The allocator-presenter should perform any necessary configuration in this method.

Syntax

  HRESULT StartPresenting(
  DWORD_PTR  dwUserID
);

Parameters

dwUserID

[in]  An application-defined DWORD_PTR cookie that uniquely identifies this instance of the VMR for use in scenarios when one instance of the allocator-presenter is used with multiple VMR instances.

Return Values

The method returns an HRESULT. Possible values include those in the following table.

Value Description
S_OK The method succeeded.

Remarks

PresentImage can be called when the filter is in either a running or a paused state. StartPresenting and StopPresenting can be called only in a running state. Therefore, if the graph is paused before it is run, PresentImage will be called before StartPresenting.

Requirements

Header: Include D3d9.h, Vmr9.h.

Library: Use Strmiids.lib.

See Also