IMFCaptureSource::GetCurrentDeviceMediaType method

Gets the current media type for a capture stream.

Syntax


HRESULT GetCurrentDeviceMediaType(
  [in]   DWORD dwSourceStreamIndex,
  [out]  IMFMediaType **ppMediaType
);

Parameters

dwSourceStreamIndex [in]

Specifies which stream to query. The value can be any of the following.

ValueMeaning
0–0xFFFFFFFB

The zero-based index of a stream. To get the number of streams, call IMFCaptureSource::GetDeviceStreamCount.

MF_CAPTURE_ENGINE_FIRST_SOURCE_PHOTO_STREAM
0xFFFFFFFB

The first image stream.

MF_CAPTURE_ENGINE_FIRST_SOURCE_VIDEO_STREAM
0xFFFFFFFC

The first video stream.

MF_CAPTURE_ENGINE_FIRST_SOURCE_AUDIO_STREAM
0xFFFFFFFD

The first audio stream.

 

ppMediaType [out]

Receives a pointer to the IMFMediaType interface. The caller must release the interface.

Return value

This method can return one of these values.

Return codeDescription
S_OK

Success.

MF_E_INVALIDSTREAMNUMBER

The dwSourceStreamIndex parameter is invalid.

 

Requirements

Minimum supported client

Windows 8 [desktop apps only]

Minimum supported server

Windows Server 2012 [desktop apps only]

Header

Mfcaptureengine.h

See also

IMFCaptureSource

 

 

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