CMediaSample.GetMediaType method

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetMediaType method retrieves the media type, if the media type differs from the previous sample. This method implements the IMediaSample::GetMediaType method.

Syntax

HRESULT GetMediaType(
   AM_MEDIA_TYPE **ppMediaType
);

Parameters

ppMediaType

Address of a variable that receives a pointer to an AM_MEDIA_TYPE structure. If the media type has not changed from the previous sample, *ppMediaType is set to NULL.

Return value

Returns one of the HRESULT values shown in the following table.

Remarks

When you are done with the media type, free the memory block by calling the DeleteMediaType utility function.

The CMediaSample::m_pMediaType member variable specifies the media type. The CMediaSample::m_dwFlags member variable specifies whether the media type has changed.

Requirements

See also

CMediaSample Class