IVMRMixerControl9::GetOutputRect method (vmr9.h)

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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

The GetOutputRect method retrieves the position of this stream's video rectangle within the composition rectangle.

Syntax

HRESULT GetOutputRect(
  [in]  DWORD              dwStreamID,
  [out] VMR9NormalizedRect *pRect
);

Parameters

[in] dwStreamID

Specifies the input stream. This value corresponds to the input pin. For example, the first input pin is stream 0.

[out] pRect

Pointer to a NORMALIZEDRECT structure that receives the destination rectangle in composition space.

Return value

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

Return code	Description
S_OK	The method succeeded.
E_POINTER	pRect is invalid.
VFW_E_NOT_CONNECTED	The pin is not connected.

Remarks

Because this rectangle exists in compositional space, there is no such thing as an "invalid" rectangle. For example, if left is greater than right, it means the video is mirrored in the x direction. An empty rectangle turns off this stream.

Include DShow.h and D3d9.h before Vmr9.h.

Requirements

Requirement	Value
Minimum supported client	Windows XP with SP2 [desktop apps only]
Minimum supported server	Windows Server 2003 R2 [desktop apps only]
Target Platform	Windows
Header	vmr9.h
Library	Strmiids.lib

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