IMFSourceReader::GetCurrentMediaType method

Gets the current media type for a stream.

Syntax


HRESULT GetCurrentMediaType(
  [in]  DWORD        dwStreamIndex,
  [out] IMFMediaType **ppMediaType
);

Parameters

dwStreamIndex [in]

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

ValueMeaning
0–0xFFFFFFFB

The zero-based index of a stream.

MF_SOURCE_READER_FIRST_VIDEO_STREAM
0xFFFFFFFC

The first video stream.

MF_SOURCE_READER_FIRST_AUDIO_STREAM
0xFFFFFFFD

The first audio stream.

 

ppMediaType [out]

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

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return codeDescription
S_OK

The method succeeded.

MF_E_INVALIDSTREAMNUMBER

The dwStreamIndex parameter is invalid.

 

Remarks

This interface is available on Windows Vista if Platform Update Supplement for Windows Vista is installed.

Requirements

Minimum supported client

Windows 7, Windows Vista and Platform Update Supplement for Windows Vista [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2008 R2 [desktop apps | Windows Store apps]

Header

Mfreadwrite.h

See also

Source Reader
IMFSourceReader

 

 

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